MD LABS INC
SB-2, 1996-09-12
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  AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON SEPTEMBER 12, 1996
                                                    REGISTRATION NO. 333-
================================================================================
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549

                                  ----------

                                  FORM SB-2
                         REGISTRATION STATEMENT UNDER
                          THE SECURITIES ACT OF 1933

                                  ----------

                               M.D. LABS, INC.
                (NAME OF SMALL BUSINESS ISSUER IN THE CHARTER)

                  Delaware                             2099              
       (STATE OR OTHER JURISDICTION         (PRIMARY STANDARD INDUSTRIAL 
     OF INCORPORATION OR ORGANIZATION)       CLASSIFICATION CODE NUMBER)  
                                                                  
                                   86-0835247
                                (I.R.S. EMPLOYER
                               IDENTIFICATION NO.)

   1719 West University Drive, Suite 187, Tempe, Arizona 85281; (602) 437-0127
     (ADDRESS OF PRINCIPAL PLACE OF BUSINESS OR INTENDED PRINCIPAL PLACE OF
          BUSINESS AND TELEPHONE NUMBER OF PRINCIPAL EXECUTIVE OFFICER)

                                  ----------

                     Hooman Nikzad, Chief Executive Officer
                                 M.D. LABS, INC.
                       1719 W. University Drive, Suite 187
                              Tempe, Arizona 85281
                                 (602) 437-0127
          (NAME, ADDRESS, AND TELEPHONE NUMBER OF AGENT FOR SERVICE)

                                  ----------

                                  Copies To:
      Paul M. Gales, Esq.                         Dennis J. Doucette, Esq.      
        QUARLES & BRADY                          James A. Mercer III, Esq.      
One E. Camelback Road, Suite 400           LUCE, FORWARD, HAMILTON & SCRIPPS LLP
  Phoenix, Arizona 85012-1659                    600 W. Broadway, Suite 600     
         (602) 230-5500                         San Diego, California 92101     
                                                       (619) 236-1414           
                                                  

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
 As soon as practicable after the effective date of this Registration Statement.


   If this  Form is filed to  register  additional  securities  for an  offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [   ]

   If this Form is a  post-effective  amendment  filed  pursuant  to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering.  [   ]

   If delivery of the  prospectus  is expected to be made  pursuant to Rule 434,
please check the following box.  [    ]


<TABLE>
                       CALCULATION OF REGISTRATION FEE
======================================================================================================================
                                                            Proposed           Proposed maximum  
    Title of each class of           Amount to be       maximum offering      aggregate offering        Amount of
 securities to be registered         registered(1)      price pershare(2)          price(2)         registration fee
- ----------------------------------------------------------------------------------------------------------------------
<S>                               <C>                        <C>                  <C>                  <C>      
Common Stock, $.001 par value 
 per share .....................  1,495,000 shares           $ 7.00               $10,465,000          $3,608.62

======================================================================================================================

<FN>
(1) Includes 195,000 shares to cover over-allotments, if any.
(2) Estimated solely for the purpose of calculating the registration fee.
</FN>
</TABLE>

                                   ----------


   THE  REGISTRANT  HEREBY  AMENDS THIS  REGISTRATION  STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER  AMENDMENT  WHICH  SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT SHALL  THEREAFTER  BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE  SECURITIES  ACT OF 1933 OR UNTIL THE  REGISTRATION  STATEMENT  SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION,  ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

================================================================================

<PAGE>

INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT  RELATING  TO THESE  SECURITIES  HAS BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.


                 SUBJECT TO COMPLETION, DATED SEPTEMBER 12, 1996
                                1,300,000 SHARES

                         [ooo M.D. LABS, INC. LOGO ooo ]

                                  COMMON STOCK

                                   ----------

   All of the shares of Common Stock, $.001 par value per share,  offered hereby
(the "Common  Stock") are being issued and sold by M.D.  Labs,  Inc., a Delaware
corporation (the "Company").

   Prior to this offering (the "Offering"),  there has been no public market for
the Common Stock. It is currently  anticipated  that the initial public offering
price per share  will be  $7.00.  See  "Underwriting"  for a  discussion  of the
factors considered in determining the initial public offering price. The Company
has made  application for the Common Stock to be quoted and traded on the Nasdaq
National Market under the symbol "MDLA" upon the effectiveness of this Offering.

THESE ARE  SPECULATIVE  SECURITIES  THAT SHOULD ONLY BE PURCHASED BY PERSONS WHO
CAN AFFORD TO LOSE THEIR ENTIRE INVESTMENT. SEE "RISK FACTORS" BEGINNING ON PAGE
5 FOR A DISCUSSION OF CERTAIN  FACTORS THAT SHOULD BE CONSIDERED BY  PROSPECTIVE
INVESTORS PRIOR TO INVESTING IN THE COMMON STOCK.

                                  ----------

  THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
       EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

================================================================================
                                                Underwriting         Proceeds
                                 Price          Discounts and         to the
                               to Public        Commissions(1)      Company(2)
- --------------------------------------------------------------------------------
Per Share ............       $        7.00    $         0.70       $        6.30
- --------------------------------------------------------------------------------
Total(3) .............       $   9,100,000    $      910,000       $   8,190,000
================================================================================
(1) The Company has agreed to indemnify the several Underwriters against certain
    liabilities,  including  liabilities  under the  Securities  Act of 1933, as
    amended. See "Underwriting."
(2) Before  deducting  Offering  expenses  estimated at $690,000,  including the
    Underwriters' non-accountable  expense  allowance,  all of which are payable
    by the Company. See "Underwriting."
(3) The Company has granted the  Underwriters  a 45-day option to purchase up to
    195,000  additional  shares of Common Stock at the Price to Public per share
    less  the   Underwriting   Discounts   and   Commissions   solely  to  cover
    over-allotments,   if  any  (the  "Over-allotment  Option").  If  the  Over-
    allotment   Option  is  exercised  in  full,  the  total  Price  to  Public,
    Underwriting  Discounts and  Commissions and Proceeds to the Company will be
    $10,465,000,  $1,046,500, and $9,418,500,  respectively. See "Underwriting."

                                   ----------

   The shares of Common  Stock are  offered by the  several  Underwriters  named
herein,  subject to prior sale, when, as and if delivered to and accepted by the
Underwriters  and  subject to  certain  conditions,  including  the right of the
Underwriters  to reject orders in whole or in part. It is expected that delivery
of the  certificates  representing the Common Stock will be made against payment
therefor in San Diego,  California on or about three business days from the date
of this Prospectus.

            SENTRA                                SPELMAN     
    SECURITIES CORPORATION                      & CO., INC.   
                                             
                              
            The date of this Prospectus is           , 1996.

<PAGE>
INSIDE FRONT COVER:

12 photographs of containers of company products
(4 rows x 3 columns)

1.       Citrium(TM) Lean and Trim Chewing Gum individual packets
2.       Citrium(TM) Herbal Tea box
3.       Display case of multiple Citrium(TM) Herbal Tea boxes
4.       Citrium(TM) Lean & Trim Chewing Gum bottles (large and small)
5.       Women's Nature(TM) Natural Balance Herbal Tea-raspberry flavor
         box
6.       Citrium(TM) Lean & Trim Chewing Gum box
7.       DHEA bottles (large and small)
8.       Women's Nature(TM) P.M.S. Tea boxes
9.       Pro-Line(R) Product line bottles & boxes
10.      Daily Detox(R) Herbal Tea box
11.      Daily Detox(R) and Daily Detox(R) II drop bottles
12.      Daily Detox(R) Detox Herbal Tea-apple cider cinnamon flavor





   IN CONNECTION WITH THIS OFFERING,  THE  UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK OF
THE  COMPANY AT A LEVEL  ABOVE THAT WHICH  MIGHT  OTHERWISE  PREVAIL IN THE OPEN
MARKET.  SUCH  TRANSACTIONS  MAY BE  EFFECTED ON THE NASDAQ  NATIONAL  MARKET OR
OTHERWISE. SUCH STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.


<PAGE>

- --------------------------------------------------------------------------------

                               PROSPECTUS SUMMARY

   The  following  summary is qualified  in its  entirety by  reference  to, and
should be read in conjunction with, the more detailed  information and financial
statements, including the notes thereto, appearing elsewhere in this Prospectus.
Unless  otherwise  indicated,  the  information in the Prospectus  does not give
effect to the exercise of the Over-allotment Option granted to the Underwriters,
as  described  under  "Underwriting."  On May 31,  1996,  the Company  exchanged
3,000,000  shares of its  Common  Stock for all of the  membership  interest  in
Houston  Enterprises,  L.L.C., an Arizona limited liability company ("Houston"),
and the  financial  statements  at May 31, 1996 reflect that  exchange.  For the
years  ended May 31, 1995 and 1996,  the  Company's  predecessor  was taxed as a
limited liability company.  For income tax reporting  purposes,  all profits and
losses for such  years,  and certain  other  items,  were passed  through to the
members of Houston.  Because the income of the Company will be taxable after May
31, 1996 certain temporary  differences  between financial and tax reporting are
reflected  as an income  tax  benefit in the  statement  of income for the years
reported  and as  deferred  tax  assets  in the  balance  sheets  for the  years
reported.  Except for  historical  information,  the matters  discussed  in this
Prospectus are  forward-looking  and involve risks and uncertainties.  See "Risk
Factors."

                                 THE COMPANY

   M.D. Labs, Inc.  (together with its  subsidiaries,  the "Company")  packages,
markets  and  distributes  natural  food  and  dietary  supplements,  consisting
primarily of herbal products and sports nutrition products,  as well as a weight
management  chewing  gum  product.  The  Company  has  focused  on  new  product
innovation,  such as its Daily  Detox(R)  teas  targeted  to the  detoxification
herbal tea market and its Citrium(TM)  Lean and Trim chewing gum targeted to the
weight loss chewing gum market.  The  Company's  products  generally are sold to
distributors and to health food, drug and other retail stores.

   The Company currently markets the Naturally Klean(R), Daily Detox(R), Women's
Nature(TM),   HerbalPathic(TM)   and  Citrium(TM)  product  lines.  Through  its
wholly-owned subsidiary, Belnik Investment Group, Inc. doing business as Freedom
Wholesalers,  Inc.  ("Freedom"),  the Company  also  markets The  Stuff(TM)  and
Naturally  Klean(R) Herbal  Tea,(TM) and under the  PRO-LINE(R)  name it markets
products such as Super  ProLean(TM)  Fat Burners,  Amino Formula  "1240"(TM) and
Chromoplex(TM).  The Naturally  Klean(R) and Daily Detox(R) lines are focused on
the detoxification  market.  These products are available in teas,  capsules and
extracts.  Women's  Nature(TM) herbal tea and the  HerbalPathic(TM)  single herb
supplements  support and enhance  overall health.  The Citrium(TM)  product line
addresses the weight  management  market.  The Freedom products are intended for
the detoxification and energy supplement markets,  and the PRO-LINE(R)  products
are formulated for the sports nutrition market.

   Sales of herb-based products, including dietary supplements, are estimated to
exceed $1 billion in the United States annually.  Industry sources also indicate
that sales of sports nutrition products,  excluding beverages, were $675 million
in 1995.  The market for natural  dietary  supplements,  weight  management  and
sports nutrition products is highly fragmented,  with intense  competition among
larger  companies  offering  full lines of products and smaller  single  product
companies.  The industry is characterized by frequent new product introductions,
short product life cycles,  rapid price declines and eroding profit margins. The
Company   believes  that  the   competitive   forces  within  the  industry  are
characterized by product innovation,  brand recognition, and effective marketing
and distribution.

   The  Company is  pursuing a  three-pronged  growth  strategy  focusing on (i)
expansion  of sales of  existing  products  to  current  and new  customers  via
increased  advertising and marketing and  development of additional  channels of
distribution;  (ii)  development of new products which  complement the Company's
existing product lines or address new markets with significant growth potential;
and (iii) acquisition of other companies, products or product lines which, as in
the case of new products  under internal  development,  complement the Company's
existing product lines or address new markets with significant growth potential.

   The  Company  was  incorporated  in  Delaware  on  February 7, 1996 to be the
successor  to  Houston.  On  May  31,  1996,  the  Company  acquired  all of the
membership  interests in Houston and thereupon  succeeded to Houston's business.
Houston acquired its original line of products from Houston  Enterprises,  Inc.,
an Arizona  corporation,  through an asset purchase  completed in February 1994.
Houston Enterprises, Inc. introduced its first product line in 1987. In February
1996,  the  Company  purchased  all of the  outstanding  stock of an  affiliated
company,   Belnik  Investment  Group,  Inc.,  an  Arizona   corporation,   which
distributed  the  Freedom  products.  See  "Certain  Transactions."  The Company
obtained the PRO-LINE(R)  product line through the purchase of substantially all
of the assets of Olympian Global,  L.L.C.,  an Arizona limited liability company
("Olympian Global") in January 1996.


   The principal office of the Company is located at 1719 W.  University,  Suite
187, Tempe, Arizona 85281. The Company's telephone number is (602) 437-0127.
- --------------------------------------------------------------------------------

                                        3
<PAGE>

- --------------------------------------------------------------------------------

<TABLE>

                                 THE OFFERING

<S>                                                      <C>
Common Stock offered by the Company ...................  1,300,000 shares
Common Stock to be outstanding after the Offering  ....  4,300,000 shares(1)
Use of proceeds .......................................  To fund development of sports nutrition product lines;
                                                         increase marketing and advertising; upgrade computer
                                                         systems; acquire automating equipment; and
                                                         potentially acquire complementary products and
                                                         businesses. See "Use of Proceeds."
Proposed Nasdaq National Market Symbol ................  "MDLA"

<FN>
- ----------
(1) Excludes  464,421  common shares  issuable upon the exercise of  outstanding
    warrants as of August 15, 1996,  of which  warrants for 267,656  shares were
    exercisable,  and 229,000 shares issuable upon exercise of outstanding stock
    options authorized under the Company's 1996 Stock Option Plan, none of which
    were exercisable as of August 15, 1996. See "Description of Capital Stock --
    Warrants" and "Management -- Stock Option Plan."
</FN>
</TABLE>


               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA


   The following  summary  financial data of the Company have  been derived from
the audited  financial  statements of the Company.  The summary  financial  data
presented below should be read in conjunction with "Management's  Discussion and
Analysis of Financial  Condition  and Results of  Operations"  and the Company's
financial   statements  and  the  notes  thereto  appearing  elsewhere  in  this
Prospectus.

                                                           YEARS ENDED MAY 31,
                                                        ------------------------
                                                           1996         1995
                                                           ----         ----
CONSOLIDATED STATEMENTS OF INCOME DATA:
Net sales ..........................................    $5,191,067    $4,193,997
Cost of goods sold .................................     1,510,479     1,608,568
                                                        ----------    ----------
Gross Profit .......................................     3,680,588     2,585,429
Selling, general and administrative expenses .......     2,141,926     2,012,641
                                                        ----------    ----------
Income from operations .............................     1,538,662       572,788
Interest expense ...................................        12,991             0
                                                        ----------    ----------
Income before income tax ...........................     1,525,671       572,788
Income tax benefit .................................        86,039             0
                                                        ----------    ----------
Net income .........................................    $1,611,710    $  572,788
                                                        ==========    ==========
PRO FORMA NET INCOME DATA (UNAUDITED)(1):
Income before income tax ...........................    $1,525,671    $  572,788
Pro forma income taxes .............................       610,039       229,115
                                                        ----------    ----------
Pro forma net income ...............................    $  915,632    $  343,673
                                                        ==========    ==========
Pro forma net income per share(2) ..................    $     0.27    $     0.10
Shares used in pro forma net income per share(2) ...     3,329,899     3,329,899
                                                        ----------    ----------


                                                             MAY 31, 1996
                                                  ------------------------------
                                                     ACTUAL       AS ADJUSTED(3)
BALANCE SHEET DATA:
Cash and cash equivalents ................        $    91,799      $ 8,281,799
Working capital ..........................          1,191,112        9,381,112
Total assets .............................          2,691,670       10,881,670
Long-term debt ...........................                  0                0
Total shareholders' equity ...............          2,017,853       10,207,853
                                                                

- ----------
(1) For the two years ended May 31, 1996, Houston elected under Internal Revenue
    Code  Sub-Chapter  K to be  treated  as a  limited  liability  company,  and
    accordingly,  generally  was not subject to federal and state income  taxes.
    For income tax reporting  purposes for these years,  all profits and losses,
    and certain  other  items,  were  passed  through to the members of Houston.
    Since the income of the Company will be taxable  after May 31, 1996,  income
    tax expense for the years ended May 31, 1996 and 1995 has been  presented as
    if the  Company  was a C  corporation  during  those  years.  The income tax
    expense was calculated assuming an effective tax rate of 40%.
(2) Based on  weighted  average  common  shares  and  common  share  equivalents
    outstanding as of May 31, 1996, giving  retroactive  effect to the Company's
    conversion in May 1996 from a limited  liability  company to a  corporation,
    and the conversion of membership interests into Common Stock. See Note 14 of
    Notes to Financial Statements.
(3) Adjusted  to give  effect to the sale of  1,300,000  shares of Common  Stock
    offered by the  Company  hereby (at an assumed  offering  price of $7.00 per
    share net of underwriting  discounts and commissions,  before other offering
    expenses,  and exclusive of the Underwriters'  Over-allotment  Option).  See
    "Use of Proceeds" and "Capitalization."

- --------------------------------------------------------------------------------

                                        4

<PAGE>
                                 RISK FACTORS

   Prospective  purchasers  of the Common  stock should  carefully  consider the
following risk factors and the other  information  contained in this  Prospectus
before making an investment in the Common Stock.  Information  contained in this
Prospectus contains "forward-looking  statements" which can be identified by the
use of forward-looking terminology such as "believes," "expects," "may," "will,"
"should" or "anticipates" or the negative thereof or other variations thereon or
comparable terminology,  or by discussions of strategy. See, e.g., "Management's
Discussion and Analysis of Financial  Condition and Results of  Operations"  and
"Business  --  Strategy."  No  assurance  can be given that the  future  results
covered  by the  forward-looking  statements  will be  achieved.  The  following
matters  constitute  cautionary  statements  identifying  important factors with
respect  to  such  forward-looking  statements,   including  certain  risks  and
uncertainties,  that could  cause  actual  results to vary  materially  from the
future results covered in such forward-looking  statements.  Other factors could
also cause actual results to vary  materially from the future results covered in
such forward-looking statements.

   LIMITED INDUSTRY  EXPERIENCE;  RECENT BUSINESS VENTURE.  Although the Company
has been profitable from inception,  management has not had extensive experience
in the natural dietary supplement  business or in the weight management products
business.  Several of the Company's employees,  however, have been active in the
industry  for a number  of years,  although  no  employees  are  health  science
professionals.  The Company was formed in February 1996 and  commenced  business
through its  predecessor in February 1994.  Consequently,  it has only a limited
operating history. It can be expected that future operating results may continue
to be subject to many of the problems,  expenses,  delays and risks  inherent in
the early  development  of a business  enterprise  and that the Company may have
little control over some of such occurrences.  For example,  the Company has not
completed the process of implementing  formal reporting systems,  nor has it yet
received governmental  inspections,  such as those conducted by entities such as
the Occupational Safety and Health  Administration  ("OSHA"),  the Food and Drug
Administration  ("FDA") and Federal Trade Commission ("FTC"), as can be expected
in the industry. There can be no assurance,  therefore, that the Company will be
able to continue the development of its business while sustaining  profitability
in future periods. See "Business -- Strategy" and "-- Government Regulation."

   SHORT  PRODUCT  LIFE  CYCLES;  DEPENDENCE  ON NEW  PRODUCTS.  Certain  of the
Company's  products  primarily  are used by consumers who are early to adopt new
products.  The markets for such  products are  characterized  by factors such as
changing  customer  demand,  short  product life cycles and frequent new product
introductions.  Such changes and cycles often are not due to identifiable market
factors.  The performance of the Company will depend on its ability  continually
to develop and market new products that achieve customer acceptance and loyalty,
as well as its ability to adapt its product  offerings to meet changing  pricing
considerations,  consumer  preferences and other market  factors.  The Company's
business,  financial  condition  and results of  operations  could be materially
adversely  affected  if the  Company  were to incur  delays  in  developing  new
products  or if such new  products  did not gain market  acceptance.  Therefore,
there can be no assurance that the Company's existing or future products will be
sufficiently  successful  to enable the  Company to compete  effectively  in its
current markets or, should the Company's product offerings meet with significant
customer  acceptance,  that one or more current or future  competitors  will not
introduce products which compete  successfully with the Company's products.  See
"Business -- Product Planning, Development and Acquisition."

   COMPETITION AND LOW BARRIERS TO ENTRY. The market for health food supplements
and sports  nutrition  products is  characterized  by intense  competition.  The
Company faces  substantial  competition  in its efforts to capture a significant
share of its markets.  A number of companies  currently offer competing products
and  additional  competing  products  most  probably will be introduced by other
companies in the future. There can be no assurance that other companies will not
develop products that are similar to those offered by the Company.  In addition,
many of the Company's existing and potential competitors have greater financial,
marketing  and  research  capabilities  than  the  Company.   Therefore,   these
competitors may be better  positioned to capture  incremental  sales of products
comparable to the Company's products which may become accepted in the mainstream
marketplace. See "Business -- Competition."


                                       5
<PAGE>

   ABSENCE OF CLINICAL STUDIES,  SCIENTIFIC REVIEW AND TESTING.  As discussed in
greater  detail in the section  relating to government  regulation,  current law
requires the Company to obtain scientific data and substantiation to support its
promotional  claims  concerning its products.  Some products may require advance
FDA approval for the claims,  and all product claims must be at least  supported
by adequate substantiation.  The Company has implemented a policy for collecting
the  available  substantiation  for its  product  claims,  which  in most  cases
consists of information prepared and supplied by other companies,  including the
Company's  suppliers.  The sufficiency of the Company's  substantiation  for its
product claims has not been reviewed by any regulatory  agency,  and the Company
has not provided nor been requested to provide any scientific data to the FDA or
the FTC.  There can be no assurance  that the  substantiation  data  obtained or
available  to the  Company  in  support  of its  product  claims  will be deemed
acceptable  by  the  FDA  or  the  FTC,   should  either  agency   request  such
substantiation  in  the  future.   Further,   the  FTC  has  recently  commenced
administrative proceedings against other businesses in the health food industry,
questioning the sufficiency of their  substantiation for various product claims.
There is no assurance that such  proceedings  by the FTC or the FDA  will not be
brought against the Company,  and such  proceedings or product changes needed to
avoid the commencement of such proceedings  could have a material adverse effect
on the Company's business, financial condition and results of operations.

   The  Company  markets its  products on the premise  that they fall within the
category known as "dietary supplements." Current regulations do not require that
this category of products undergo clinical testing or FDA review before they are
marketed.  The Company  does not conduct or sponsor  such  studies,  nor does it
analyze the contents of products  received from third-party  manufacturers.  See
"Risk Factors -- Reliance on Outside Suppliers and  Manufacturers." As a result,
there  can be no  assurance  that the  Company's  products  contain  ingredients
precisely as labelled,  and there is increased risk that the Company's  products
may cause  unexpected  side  effects  for which the Company may be liable to the
persons injured and/or the Company may be subject to administrative and judicial
proceedings  by  the  regulatory  authorities.   Ingredients  similar  to  those
contained  in the  Company's  products  have been  associated  with such adverse
effects. The Company has not received substantial  complaints of adverse effects
resulting from the proper use of its products.  However,  because the Company is
highly  dependent  upon  consumers'  perception of the safety and quality of its
products  as well as  similar  products  distributed  by  other  companies,  the
Company's  business,  financial  condition  and results of  operations  could be
materially  adversely  affected if any of the Company's  products or any similar
products  distributed  by other  companies  should  prove or be  asserted  to be
harmful to  consumers.  In addition,  because of the Company's  dependence  upon
consumer perceptions, adverse publicity associated with illness or other adverse
effects resulting from consumers'  failure to consume the Company's  products as
suggested by the Company or other misuse or abuse of the  Company's  products or
any  similar  products  distributed  by other  companies  could  have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.


   Further,   the  Company  believes  that  recent  growth  experienced  by  the
nutritional  supplement  market  is based in part on  national  media  attention
regarding recent scientific research  suggesting  potential health benefits from
regular  consumption  of certain  nutritional  products.  Such research has been
described  in major  medical  journals,  magazines,  newspapers  and  television
programs.  The scientific  research to date is preliminary,  and there can be no
assurance of future favorable  scientific  results and media attention or of the
absence of unfavorable  or  inconsistent  findings.  See "Business -- Government
Regulation."  There is also no assurance that regulatory  agencies will continue
to  permit  the  marketing  of such  products  based on the  type of  scientific
research available.


   Some of the  Company's  products  may not qualify  for  dietary  supplemental
status,  and may become the subject of regulatory  classification as a "drug" or
"new  drug." The  absence of clinical  studies  and  scientific  review for such
products  could require the Company to  discontinue  their sale until formal FDA
approval of a New Drug Application is obtained. The Company does not expect that
it would be in a position to finance the  submission of a New Drug  Application.


   All or any of the above may require  the Company to make a business  decision
to  discontinue  the  marketing  of one or more  of its  products.  There  is no
assurance that any such discontinuance or the

                                        6
<PAGE>


cumulative effect of such  discontinuance may not have a material adverse effect
on the Company's business, financial condition or results of operations.

   UNCERTAINTY AND POTENTIAL  NEGATIVE  EFFECTS OF GOVERNMENT  REGULATIONS.  The
manufacturing,  processing, formulating, packaging, labelling and advertising of
the  Company's  products  are  subject  to  regulation  by one or  more  federal
agencies,  including the FDA, the FTC, the Consumer  Product  Safety  Commission
(the "CPSC"),  the United States Department of Agriculture (the "USDA"), and the
Environmental  Protection Agency (the "EPA"). The Company's  activities are also
regulated by various agencies of the states, localities and foreign countries to
which the Company's products are distributed and in which the Company's products
are sold.

   The  composition  and  labelling  of dietary  supplements,  which  comprise a
significant  majority of the Company's  products,  is most actively regulated by
the FDA under the provisions of the Federal Food,  Drug, and Cosmetic Act ("FFDC
Act").  The FFDC Act has been revised in recent years by the Nutrition  Labeling
and  Education  Act of 1990  ("NLEA") and by the Dietary  Supplement  Health and
Education  Act of 1994  ("DSHEA").  While in the  judgment of the Company  these
regulatory changes are generally favorable to the dietary supplements  industry,
there can be no assurance  that the Company will not in the future be subject to
additional laws or regulations  administered by various regulatory  authorities.
In addition,  there can be no assurance that existing laws and regulations  will
not be repealed or be subject to more stringent or unfavorable interpretation by
applicable regulatory authorities.

   The  labelling  requirements  for dietary  supplements  have not been clearly
established. In December 1995, the FDA issued proposed regulations to govern the
labelling of dietary supplements. These regulations are expected to become final
later in 1996,  and would  require  the  Company  to revise  all of its  dietary
supplement labels in 1997. The FDA has informally  stated that it will,  subject
to public comment,  withhold  enforcement of these  regulations until January 1,
1998. 

   Marketing  and sale of dietary  supplements  is to some extent  dependent  on
avoiding a drug classification for such products. The FDA has not yet delineated
how the drug versus dietary  supplement  distinctions will be made under the new
law. Some of the Company's products may be regulated separately as foods without
invoking  the  provisions  of the law  applicable  to dietary  supplements.  The
adoption of new regulations in the United States or elsewhere, or changes in the
interpretation of existing regulations,  could have a material adverse effect on
the Company's business, financial condition and results of operations.

   The Company has been advised by Napa County,  California,  and Sonoma County,
California,  that its  Citrium(TM)  and the Super  ProLean(TM)  Fat  Burners are
possibly  mislabeled.  The Company has  responded  to such  counties and has not
received a reply. The Company has also been advised by several states, including
the State of New York, that it may not sell its Naturally High(TM) herbal energy
product or any other  product that contains ma huang or ephedrine in that state.
The Company has discontinued selling Naturally High(TM), the only product of the
Company which contained ma huang or ephedrine. 

   The  Company  cannot   predict  the  nature  of  future  laws,   regulations,
interpretations  or  applications,  nor  can it  determine  what  effect  either
additional  governmental  regulations  or  administrative  orders,  when  and if
promulgated,  or disparate  federal,  state and local regulatory  pronouncements
would have on its business in the future. Applicable regulations could, however,
require the  reformulation of certain products to meet new standards,  recall or
discontinuance  of  certain  products  not able to be  reformulated,  additional
recordkeeping,  expanded  documentation  of the properties of certain  products,
expanded or different labeling and/or scientific  substantiation.  Any or all of
such  requirements  could  have a  material  adverse  effect  on  the  Company's
business, financial condition and results of operations.

   Governmental  regulations  in foreign  countries  where the Company  plans to
commence  or expand  sales may prevent or delay entry into the market or prevent
or delay the  introduction,  or  require  the  reformulation  of  certain of the
Company's  products.  Compliance with such foreign  governmental  regulations is
generally the responsibility of the Company's  distributors for those countries.
These distributors are independent contractors over whom the Company has limited
control. See "Business -- Government Regulation."

                                        7
<PAGE>

   NON-COMPLIANCE  WITH  GOVERNMENT   REGULATIONS.   The  Company  has  recently
undertaken a review of its products in light of current regulations.  Because of
the evolving  status of the  regulatory  environment  and the early stage in the
life cycle of many of the Company's  products,  the Company cannot be certain as
to which regulations govern its activities.  Nevertheless,  the Company believes
that some of its products do not or may not comply with existing  regulations in
all  respects.  The  Company  has  commenced  making the  modifications  that it
believes are necessary to come into material  compliance with such  regulations.

   The Company's  facilities  are subject to regulation by various  governmental
agencies,  including state and local licensing,  zoning, land use,  construction
and environmental  regulations and various health,  sanitation,  safety and fire
codes and  standards.  Failure to obtain  necessary  licenses  or  approvals  or
suspension,  due to failure to comply with applicable  regulations or otherwise,
could interrupt the Company's packaging and distribution operations. The Company
recently  became aware of the need for local  licensing  with respect to certain
aspects  of its  business.  The  Company  may be subject  to  criminal  or civil
penalties,  including  orders or  injunctions  to cease certain  operations  for
failure to have such  licensing.  There can be no assurance that the Company can
obtain such licensing without incurring  material  disruption of its business or
material regulatory penalties, if at all.

   EFFECT OF DISCONTINUED PRODUCT. The Company recently discontinued selling its
Naturally High(TM) herbal energy product.  Naturally  High(TM)  represented less
than 1% of revenues in fiscal 1996. This product contains ma huang. Ma huang has
been the subject of certain  adverse  publicity  in the United  States and other
countries relating to alleged harmful effects. After numerous reports of adverse
reactions,  the FDA has warned  that  people  should not  consume ma huang,  and
several states and local governments have banned or heavily  regulated  products
containing  ma  huang.  The  FDA  has  investigated   reports  linking  products
containing ma huang or its active  ingredient,  ephedrine,  to adverse reactions
such as heart  attacks  and  death.  In  general,  there has been very  vigorous
regulatory  activity at both the federal and state level against  products which
might be construed as a substitute for otherwise illegal street drugs.

   While the  Company  believes  that  Naturally  High(TM)  is safe when used as
suggested, it has chosen to focus on other products. In August 1996, the Company
received a letter from the FDA, which referred to the recent regulatory activity
concerning  the  above  types of  products,  and  specifically  objected  to the
Company's  continued  marketing of Naturally  High.(TM) On August 30, 1996,  the
Company advised the FDA that the Company had  discontinued the sale of Naturally
High(TM) and would not market any other products which contained ma huang or any
other type of ephedrine.

   The Company has not received any claims of liability with respect to products
containing ma huang  previously  sold by the Company,  although  there can be no
assurance that such claims will not be asserted in the future.  See "Business --
Products," "-- Product Liability" and "-- Government Regulation."

   PRODUCT CONCENTRATION.  Sales of the Company's Naturally Klean(R) and related
products,  and Citrium(TM)  products  accounted for  approximately  51% and 25%,
respectively, of the Company's net sales for the fiscal year ended May 31, 1996.
The Company  anticipates  the sale of such products or a limited number of other
products will continue to contribute a substantial  portion of total revenues in
subsequent  periods.  The market for the Company's  products is characterized by
extensive competition,  frequent new product  introductions,  short product life
cycles, rapid product declines,  eroding profit margins and changing preferences
of  consumers.  A  decline  in the  demand  for any of the  Company's  products,
including  the  foregoing,  whether  as a  result  of  competition,  changes  in
demographic trends or other factors, could have a material adverse effect on the
Company's business, financial condition and results of operations. See "Business
- -- Products."

   DIFFICULTY OF PRODUCT POSITIONING.  Approximately 55% of the Company's fiscal
1996  revenue was derived from sales of The  Stuff(R)  and  Naturally  Klean(R).
These  products  are  designed to  eliminate  temporarily  toxins from the body.
However, the Company believes the products instead are often used in preparation
for urine drug testing. A change in drug testing methodology from urine tests to
blood or hair tests could cause a material decrease in sales of The Stuff(R) and
Naturally  Klean(R)  and,  therefore,  in revenues  and profits for the Company.
Additionally,  there  can be no  assurance  that the  potential  association  by
customers of the Company with such activities would not hinder market acceptance
of the Company's other products as it attempts to replace any lost revenues from
such a change in  methodology or seeks to diversify its product  offerings.  See
"Business -- Products."

                                        8
<PAGE>

   EXPOSURE  TO PRODUCT  LIABILITY.  The  Company  faces a  significant  risk of
product liability claims in the event that the use of its products is alleged to
have resulted in adverse health effects.  To date, no product liability lawsuits
have been  brought  against  the  Company.  However,  a number of the  Company's
competitors  are  routinely  sued on product  liability  claims.  Moreover,  the
Company's products contain  ingredients,  although in different  combinations or
concentrations, which have been associated with adverse effects. The Company has
purchased product and general liability  insurance with general aggregate limits
of $2 million and a $3 million excess liability  umbrella policy.  Such policies
provide  coverage  of up to $1  million  for each  occurrence.  There  can be no
assurance  that  liability  claims  will not  exceed the  coverage  limits or be
excluded by coverage  limitations  or that such  insurance  will  continue to be
available on commercially reasonable terms or at all. If the Company does not or
cannot  maintain  sufficient  liability  insurance,  its  ability  to market its
products may be significantly  impaired.  In addition,  product liability claims
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations. See "Business -- Product Liability."

   LIMITED  CAPITALIZATION.  After completion of this Offering, the Company will
have approximately  $9.38 million in working capital.  There can be no assurance
that  such  capitalization  is  sufficient  to enable  the  Company  to  compete
adequately  in the  industry on a continual  basis or to defend  itself  against
potential liabilities  associated with its products.  Additionally,  the Company
plans to continue to grow  through  development  of its  existing  products  and
through the development  and acquisition of new products and existing  operating
companies.  The planned development and expansion of the Company's business will
place  significant  demands on the Company's  working  capital.  There can be no
assurance that sufficient capital resources would be available to the Company if
and when  required by  management,  or on terms that would be  acceptable to the
Company.  In the course of raising such additional  capital,  the Company may be
required to forego a substantial  interest in its future  revenues or dilute the
equity interests of existing stockholders, and a change in control could result.
See "Risk  Factors --  Competition  and Low  Barriers to Entry," "-- Exposure to
Product  Liability,"  "Selected  Financial  Data" and "Business -- General," "--
Strategy" and "-- Competition."

   CUSTOMER CONCENTRATION. Over 50% of the Company's revenues are generated from
sales to distributors  and large retail accounts,  including one account,  Naoki
Corporation of Japan ("Naoki"),  which  constituted  $634,000,  or approximately
12.2% of the Company's net sales in fiscal year ended May 31, 1996.  The Company
does not have written  contracts  with its primary  distributors.  Additionally,
seven customers  comprised  approximately 60% of the accounts receivable balance
at May 31, 1996. Although there can be no assurance that the Company's principal
customers will continue to purchase products from the Company at current levels,
if at all, the Company expects to continue to depend on its principal  customers
for a  significant  portion  of its  net  sales.  The  loss  of any  one of such
customers  could  have a  material  adverse  effect on the  Company's  business,
financial condition and results of operations. See "Business -- Marketing."

   RELIANCE ON OUTSIDE  SUPPLIERS  AND  MANUFACTURERS.  The Company  relies upon
various  outside  sources to supply its raw  materials  and to  manufacture  its
products,  most of which  are not in the  United  States.  The  Company  has not
determined if the outside  manufacturers  comply with applicable  regulations or
licensing  requirements  or if the  foreign  jurisdictions  provide  the Company
recourse for manufacturing defects. The Company does not analyze the contents of
products received from outside suppliers or manufacturers. The Company currently
has no written  agreements  with any of such  sources;  however,  the  Company's
relationships  with these  sources are  believed to be good.  Nevertheless,  any
disruption  in the  supply  of raw  materials,  in the  manufacturing  volume or
delivery schedule,  in the pricing or in the quality of such products is outside
of the Company's  direct control and could  adversely and materially  affect the
Company's  business,   financial  condition  and  results  of  operations  until
replacement sources are established. In addition, the Company's recourse against
such  suppliers  for any  damages  it may  suffer may be  limited.  Because  the
industry  is  characterized  by  a  fragmented  manufacturing  base,  management
believes that other outside manufacturing  services could be obtained at similar
costs from a number of alternative  sources within a reasonable  period of time,
with the exception of the source of most of the Company's herbal products. 

                                        9
<PAGE>

Management  believes the Company reserves  adequate  inventory in the event of a
need  to  change  suppliers.  However,  an  interruption  in the  supply  of raw
materials,  such as through crop  failures or  embargoes,  could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations. See "Business -- Production."

   RELIANCE ON OTHERS TO DEVELOP PRODUCTS.  None of the Company's  employees are
health  science  professionals,  and the Company itself has not developed any of
the products that it currently  sells. To date, it has relied on the acquisition
of product  formulas  through  various  asset  purchases  and the  commission of
product  development with health science  professionals.  At present the Company
pays  royalties  to certain  of the  developers  of the  product  formulas.  See
"Business -- Product  Royalties." The Company does not have long-term  contracts
with any health science  professionals  for the  development of new products and
will continue for the foreseeable future to rely on third parties to develop new
products.  No assurances can be given that such  individuals  will be willing or
able to develop  commercially  successful products for the Company, or that such
individuals'  services or product  formulas  will be available on terms that are
advantageous to the Company.  See "Business -- Product Planning, Development and
Acquisition." 

   MANAGEMENT  OF  GROWTH.  The  Company  plans to expand its  overall  level of
operations,  which is expected to strain the  Company's  management,  technical,
financial  and other  resources.  To manage growth  effectively,  the Company is
likely to hire additional personnel, implement expanded operating, manufacturing
and financial  controls,  install enhanced reporting and management  information
systems for  materials  procurement,  manufacturing,  order  processing,  system
monitoring,  customer service and financial reporting,  and otherwise to improve
coordination between product formulation,  manufacturing  processes,  marketing,
sales and finance functions.  The Company's failure to expand its sales base and
manage growth  effectively could have a material adverse effect on the Company's
business,  financial  condition  and results of  operations.  See  "Business  --
Strategy."

   SELECTION AND  INTEGRATION  OF  ACQUISITIONS.  A key element of the Company's
strategy is expansion  through the  acquisition  of other  companies,  assets or
product  lines.  There can be no  assurance,  however,  that the Company will be
successful in identifying  appropriate  opportunities  or negotiating  favorable
terms.  The  integration  of any such  acquisition  is  critical  to the  future
financial  performance  of the  Company  after  any such  acquisition.  Complete
integration of any  acquisitions  could take several  quarters to accomplish and
will  require,  among other things,  integration  of the  companies'  respective
product offerings and coordination of their sales and marketing,  manufacturing,
research and development and regulatory  compliance  efforts.  The difficulty of
combining  companies may be increased by the need to integrate the personnel and
geographic  distance  between  the  companies.  Changes  brought  about  by  any
acquisition   may  cause  key  employees  or  distributors  to  terminate  their
relationship with the Company. In addition,  the Company might incur significant
integration or additional operating costs associated with an acquisition.  There
can be no  assurance  that such costs will not have an adverse  effect  upon the
Company's business, financial condition and results of operations,  particularly
in  the  fiscal  quarters   immediately   following  the   consummation  of  any
acquisition,  while the operations of the acquired business are being integrated
into the Company's  operations.  The process of integrating  companies may cause
management's  attention to be diverted from operating the Company.  In addition,
the process of combining two organizations could cause the interruption of, or a
loss of  momentum  in,  the  activities  of  either  or  both of the  companies'
businesses.  There can be no assurance that any acquisition  will not materially
and adversely affect the Company's  business,  financial condition or results of
operations or that any such acquisition will enhance the Company's business.
See "Business -- Strategy."

   DEPENDENCE ON MANAGEMENT AND KEY PERSONNEL;  LIMITED COMMITMENT OF PRESIDENT.
The  Company  depends  upon  the  active  involvement  of its  senior  managers,
including its executive officers. The loss of one or more of such officers could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.  The Company has entered into  employment  agreements
with Messrs. Nikzad, Todd Belfer,  Djahandideh and Denton as executive officers.
Todd Belfer,  the Company's  President,  is not employed on a full-time basis by
the Company,  although he has committed  orally to the Company that he will make
his time  available  to the  Company  as the  Company's  business  may  require.
Although the Company  believes  that Todd Belfer's  time  commitments  should be
sufficient  to meet the  demands of the  business  of the  Company,  there is no
assurance he will continue to have sufficient time 

                                       10
<PAGE>

available or that the Company will be able to hire additional  managers with the
necessary  expertise  if the need  arises.  Harvey  Belfer,  the  father of Todd
Belfer,  serves  as a  consultant  to the  Company  on a  part-time  basis.  The
Company's  success and growth strategy also depend on its ability to attract and
retain qualified finance,  accounting,  purchasing,  marketing,  sales and other
personnel.  Such personnel are in high demand and are often subject to competing
offers.  There can be no assurance  that the Company will be able to attract and
retain the qualified  personnel  necessary for its business and planned  growth.
See "Business -- Production" and "Management -- Employment Agreements."

   UNCERTAINTY  REGARDING  PROPRIETARY RIGHTS. The Company's success will depend
in  significant  part on its  ability to retain  protection  of its  proprietary
rights,  including  preservation  of its trade  secrets  and  know-how,  without
infringing  on the rights of others.  The  Company's  products  are sold under a
variety of trademarks  and trade names.  While the Company  believes that it has
valid proprietary  interests in all currently used trademarks and trade names in
the United States, only certain of the trademarks have been granted registration
with the United States Patent and Trademark Office ("U.S.  Pat.  Off."),  others
have  been  filed  with the  U.S.  Pat.  Off.  and are in the  process  of being
registered,  and others have not been filed.  There can be no assurance that the
Company  will be able to  successfully  defend  its  trademarks  or trade  names
against  claims that might be brought by third parties or obtain  protection for
trademarks or trade names used with new products. See "Proprietary Rights: Trade
Names, Trademarks and Copyrights."

   The  Company  does  not  maintain  patent  protection  for its  products  and
processes,  but rather  relies on trade  secret laws and common law  concepts of
confidentiality to protect its product  formulations.  There can be no assurance
that the measures  taken by the Company will protect the  Company's  proprietary
information  or that others will not gain  access to, or  independently  develop
similar trade secrets or know-how which will permit them to develop formulations
or processes that are substantially similar or superior to those of the Company.

   ACCOUNTS  RECEIVABLE.  The Company distributes its products primarily through
distributors and retailers.  While the Company  typically  extends 30-day credit
terms to qualified  customers,  some of its  distributors  and retailers tend to
extend the payment of their  accounts  beyond such terms and some are  requiring
longer payment terms. For the year ended May 31, 1996, the Company's  receivable
turnover was approximately 44 days. Although the Company has experienced no cash
flow  problems in the past caused by the aging of its  accounts  receivable,  as
management implements its plans for growth and should revenues rise, the Company
may  experience  larger  accounts   receivable   balances  and  increasing  cash
requirements,  possibly  creating  cash flow  pressures.  Such  pressures  could
present difficult working capital demands on the Company which, if not resolved,
could limit the Company's growth. See "Business -- Marketing."

   FLUCTUATIONS IN OPERATING RESULTS.  The Company's  operating results may vary
significantly due to a variety of factors, including changing market demands and
customer  demographics,   the  availability  and  cost  of  raw  materials,  the
introduction of new products by the Company and its competitors,  seasonality of
sales, the ability of the Company's sub-contractors and manufacturers to perform
as  agreed,  the timing  and  effectiveness  of the  Company's  advertising  and
promotional  campaigns,   pricing  pressures,   general  economic  and  industry
conditions  that  affect  customer  demand  and other  factors.  There can be no
assurance  that the Company can  continue to operate at historic  levels or that
the Company's financial performance will remain stable from  quarter-to-quarter.
The  Company  expects  quarterly  operating  results  to  vary  in  the  future.
Accordingly,  period-to-period  comparisons  of financial  results should not be
relied upon as an  indication of future  performance.  No assurance can be given
that the Company will maintain  profitability,  in any given quarter, or at all,
in the future. It is possible that, if the Company's stock is followed by market
analysts,  the Company's  results for any quarter will fall below such analysts'
expectations. In such event, the market for the Common Stock would be materially
adversely affected. 

   NO INDEPENDENT MARKET STUDIES.  The Company participates in markets for which
there generally is limited available market data. The Company has formulated its
business  strategies  based on certain  assumptions of the Company's  management
regarding  the  size of its  markets,  the  Company's  anticipated  share of the
markets,  and the estimated prices for and acceptance of the Company's products.
There can be no assurance that these  assessments  will prove to be correct.  No
independent market studies have been conducted on behalf of the Company, nor are
such studies planned. See "Business -- Marketing."


                                       11
<PAGE>

   RISK OF PRODUCT RETURNS.  The Company  encounters the risk of product returns
from its customers.  The Company's  current  return policy for retail  customers
generally  involves  exchange  of  products  and not the refund of the  purchase
price.  Nevertheless,  certain of the Company's  larger  customers are requiring
more  favorable  return  policies  including  longer  periods  within which such
customers may return  products for a credit.  Product  returns to date have been
less than 4% of sales; however,  there can be no assurance that actual levels of
returns will not significantly exceed the amounts previously  experienced by the
Company,  and such returns could have a material adverse effect on the Company's
business, financial condition and results of operations.

   RISKS  ASSOCIATED WITH  INTERNATIONAL  SALES.  In fiscal 1996,  international
sales  represented 17% of the Company's  total revenues.  The Company intends to
continue  to expand  its  operations  outside  the  United  States  and to enter
additional  international  markets,  which will require  significant  management
attention  and financial  resources.  The Company has committed and continues to
commit  significant  time and development  resources to customizing its products
for selected  international  markets and to developing  international  sales and
support  channels.  There can be no  assurance  that the  Company's  efforts  to
develop  international  sales will be  successful.  The failure of such  efforts
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations.

   International  sales are  subject to  inherent  risks,  including  unexpected
changes in regulatory requirements, uncertainties with regard to laws protecting
proprietary technology, import and export restrictions and tariffs, difficulties
in staffing and managing  foreign  operations,  the burdens of complying  with a
variety of foreign laws,  greater  difficulty  and delay in accounts  receivable
collection,  potentially  adverse tax  consequences  and  political and economic
instability. The Company's export sales are currently denominated exclusively in
United  States  dollars.  An increase in the value of the United  States  dollar
relative to foreign  currencies could make the Company's products more expensive
and,  therefore,  potentially less  competitive in foreign  markets.  If for any
reason exchange or price controls or other  restrictions  on foreign  currencies
are  imposed,  the  Company's  business,  financial  condition  and  results  of
operations could be materially adversely affected.

   NO PRIOR MARKET;  POSSIBLE VOLATILITY OF STOCK PRICE. Prior to this Offering,
there has been no public  market for the Company's  Common  Stock.  Accordingly,
there can be no  assurance  that an active  trading  market  will  develop or be
sustained  upon  completion  of this  Offering  or that the market  price of the
Common  Stock will not decline  below the initial  public  offering  price.  The
trading  price  of the  Common  Stock  could  also  be  subject  to  significant
fluctuations  in  response  to  variations  in  quarterly   operating   results,
developments in the health  supplement  industry,  the FDA and other  regulatory
actions, public concern as to the safety of products developed by the Company or
others, stock market or general economic  conditions,  consumer tastes and other
factors.  The  initial  public  offering  price  of the  Common  Stock  will  be
determined by negotiations among the Company and the Underwriters and may not be
indicative  of  the  prices  that  may  prevail  in  the  public   market.   See
"Underwriting." 

   DILUTION.  The initial  public  offering  price per share of Common  Stock is
substantially  higher than the net  tangible  book value per share of the Common
Stock.  Purchasers in this Offering will  experience  immediate and  substantial
dilution  of $4.91 per  share in the net  tangible  book  value per share of the
Common Stock from the initial public offering price. See "Dilution."

   CONTROL BY EXISTING STOCKHOLDERS. Following the sale of the shares offered by
this  Prospectus,  the Company's  existing  stockholders  will  beneficially own
approximately  69.8% of the outstanding Common Stock (66.7% if the Underwriters'
Over-allotment  Option is  exercised  in full) and the  Company's  officers  and
directors  will own  beneficially  in the aggregate  approximately  59.1% of the
Common Stock (56.6% if the Underwriters'  Over-allotment  Option is exercised in
full). Because of such ownership, these stockholders will continue to be able to
influence  the election of members of the  Company's  Board of Directors  and to
control  the  affairs  of the  Company,  including  mergers  or  other  business
combinations. See "Principal Stockholders."

   SHARES ELIGIBLE FOR FUTURE SALE; POTENTIAL FOR ADVERSE EFFECT ON STOCK PRICE.
Sales of substantial  amounts of Common Stock in the public market following the
Offering  could have an adverse  effect on the market price of the Common Stock.
The 1,300,000 shares offered hereby, and any shares sold pursuant

                                       12
<PAGE>

to the exercise of the Underwriter's Over-allotment Option, are freely tradeable
without restriction. Certain stockholders, including all officers and directors,
holding an aggregate  of 2,521,625  shares of Common Stock have agreed that they
will not sell any Common Stock without the prior  consent of the  representative
of the  Underwriters  (the  "Representative")  for a period of 180 days from the
date of this Prospectus (the "Lockup Period"). At June 1, 1998, 3,000,000 shares
will become eligible for immediate sale,  subject in certain cases to compliance
with certain volume  limitations.  Holders of 498,375 shares of Common Stock and
warrants to acquire 257,656 shares of Common Stock have the right, under certain
circumstances,  to require the Company to register their shares for resale under
the  Securities  Act of 1933  ("Securities  Act") and to  participate  in future
Company  registrations.  Additionally,  as of August 15, 1996, 229,000 shares of
Common Stock were issuable under options outstanding in the Company's 1996 stock
option plan ("Stock Option Plan"),  none of which were exercisable,  and 464,421
shares of Common Stock were issuable upon the exercise of outstanding  warrants,
of which  267,656 were  exercisable.  Promptly  after  expiration  of the Lockup
Period,  the Company  intends to register all shares reserved for issuance under
its Stock Option Plan. See  "Management -- Stock Option Plan,"  "Description  of
Capital Stock --  Registration  Rights," and "Shares  Eligible for Future Sale."


   CERTAIN RESTRICTIVE CHARTER AND BYLAW PROVISIONS.  The Company's  Certificate
of Incorporation (the  "Certificate") and Bylaws empower the Board of Directors,
without approval of the  stockholders,  to fix the rights and preferences of and
to issue shares of Preferred  Stock;  prohibit a substantial  stockholder of the
Company from entering  into a business  combination  or otherwise  significantly
increasing  its  interest  in the  stock or assets of the  Company  without  the
consent of the Board of Directors or a two-thirds  majority of the  stockholders
of the Company; and prohibit  stockholders of the Company from calling a special
meeting unless requested by at least 25% of the outstanding  voting shares.  The
Certificate does not provide for cumulative voting for election of directors and
does  require  cause  and the vote of a  majority  of  stockholders  to remove a
director.  These  provisions  could  have the  effect of  deterring  unsolicited
takeovers or other business  combinations  or delaying or preventing  changes in
control  or  management  of  the  Company,   including   transactions  in  which
stockholders   might   otherwise   receive  a  premium  for  their  shares  over
then-current market prices. In addition,  these provisions may limit the ability
of stockholders to approve  transactions  that they may deem to be in their best
interests.   See   "Description  of  Capital  Stock  --  Certain   Anti-Takeover
Provisions."


   MANAGEMENT DISCRETION REGARDING USE OF PROCEEDS.  Approximately $2,525,000 or
66.3% of the net proceeds of the  Offering,  after  deducting  all  underwriting
discounts and  commissions,  and after  deducting all estimated  expenses of the
Offering, and assuming the Underwriters' Over-allotment Option is not exercised,
or $2,525,000, is committed to specific uses identified in this Prospectus, with
the remainder  available for other corporate purposes such as working capital or
future  acquisitions.  The  Company  will  have  broad  discretion  in using the
unallocated net proceeds of the Offering. Prospective investors will not have an
opportunity to evaluate the relative merits of such  unspecified  uses. See "Use
of Proceeds."

   SUBSTANTIAL  PORTION OF  PROCEEDS  TO BE USED FOR NEW  PRODUCT  INTRODUCTION.
Approximately  $1,625,000, or 22% of the proceeds of this Offering, will be used
by the Company in connection  with the development of sports  nutrition  product
lines.  These  product  lines  are  still  under  development  and have not been
marketed.  Consequently,  the Company does not have any  information  concerning
consumer  acceptance of the product lines. As with all of the Company's existing
product  lines,  the sports  nutrition  market is  extremely  competitive,  with
frequent product introductions.  There can be no assurance that the Company will
complete  development of its planned  product lines or that such planned product
lines  will be  accepted  by  consumers,  will be able to  compete  successfully
against other similar products, or will be commercially viable.

   NO  DISTRIBUTIONS  OR  DIVIDENDS.  The Company has not paid  dividends on its
Common  Stock  and does  not  intend  to do so in the  foreseeable  future.  See
"Dividend Policy."


                                       13
<PAGE>

<TABLE>
                               USE OF PROCEEDS

   The net  proceeds to the  Company  from the sale of the  1,300,000  shares of
Common Stock offered hereby at an assumed initial public offering price of $7.00
per share are estimated to be  approximately  $7.5 million  (approximately  $8.7
million if the Underwriters'  Over-allotment Option is exercised in full), after
deducting  commissions,  discounts and estimated Offering expenses.  The Company
intends to use the net proceeds of this Offering as set forth below:

<CAPTION>
                                                                                                                        PERCENT OF
                               PURPOSE                                                                    AMOUNT       NET PROCEEDS
                               -------                                                                    ------       ------------
<S>                                                                                                       <C>                 <C>
Development of Sports Nutrition Product Lines:
     Increasing product research and development, including in
          particular the completion of the development of two new sports
          nutrition product lines ...............................................................          $  375,000         5.0%
     Introducing one of the above sports nutrition lines to be
          marketed through professional trainers, including raw
          material acquisition, product manufacturing, site leasing, initial
          advertising campaigns and expenses associated with
          establishing relationships with the professional trainers through
          whom the product will be sold .........................................................             750,000        10.0
     Establishing a new approximately 10,000 square foot off-site
          manufacturing and packaging facility to be utilized primarily for
          the Company's sports nutrition product operations .....................................             500,000         6.7
Increasing product marketing and advertising campaigns for other
     products in fiscal 1997 ....................................................................             400,000         5.3
Repay 12% note due March 6, 1997, payable to Belfer Labs, L.L.C., an
     affiliated entity, plus interest ("Belfer Labs Note"). Proceeds of
     the note were distributed to members of the Company's
     predecessor. See "Certain Transactions." ...................................................             200,000         2.7
Upgrading computer hardware and software systems, acquiring a new
     trade show booth, and obtaining new and upgraded
     product packaging, encapsulating and other automating
     equipment ..................................................................................             300,000         4.0
                                                                                                           ----------        ----
Total ...........................................................................................          $2,525,000        33.7%
                                                                                                           ==========        ====
</TABLE>

   The  remaining  approximately  $5.0 million of proceeds  (approximately  $6.2
million if the Underwriters' Over-allotment Option is exercised in full) has not
been  specifically  allocated,  and in the interim  will be utilized for general
working capital purposes.  See "Risk Factors -- Management  Discretion Regarding
Use of Proceeds." The Company plans to use a portion of such proceeds to acquire
existing  product  lines or entire  operating  companies in  strategic  markets,
although the Company  currently  has no  understanding,  commitment or agreement
regarding any such acquisition.

   Pending  such  uses,  the  net  proceeds  will  be  invested  in  short-term,
interest-bearing,  investment-grade securities. See "Management's Discussion and
Analysis of Financial  Condition  and Results of  Operations  --  Liquidity  and
Capital Resources."

                                       14
<PAGE>

                   LIMITED LIABILITY COMPANY DISTRIBUTIONS

   The Company's predecessor,  Houston, was an Arizona limited liability company
which was not  obligated to pay federal or state income  taxes.  The earnings of
Houston were treated, for federal and state income tax purposes,  as if they had
been earned directly by their respective members. For the fiscal years ended May
31, 1995 and 1996,  Houston made  distributions to its members totaling $692,817
and $1,300,000,  respectively, which amount was intended, in part, to offset the
members' tax liability. See "Certain Transactions."

                               DIVIDEND POLICY

   The Company has never paid cash  dividends  on its Common  Stock and does not
anticipate  paying  such  dividends  for the  foreseeable  future.  The  Company
anticipates all earnings,  if any, will be retained for future investment in its
business.  Any  future  determination  to  pay  cash  dividends  will  be at the
discretion  of the Board of Directors  and will be dependent  upon the Company's
results of operations,  financial condition and other factors deemed relevant by
the Board of Directors.

<TABLE>
                                CAPITALIZATION

   The following  table sets forth the  capitalization  of the Company as of May
31,  1996 on an actual  basis and as  adjusted  to  reflect  the  estimated  net
proceeds  from the sale of  1,300,000  shares of  Common  Stock  offered  by the
Company  hereby at an  assumed  offering  price of $7.00 per  share.  This table
should  be  read  in  conjunction  with  the  Company's  Consolidated  Financial
Statements and Notes thereto together with "Management's Discussion and Analysis
of Financial Condition and Results of Operations."

<CAPTION>
                                                                                                                MAY 31, 1996
                                                                                                   ---------------------------------
                                                                                                     ACTUAL           AS ADJUSTED(1)
                                                                                                     ------           --------------
<S>                                                                                                <C>                 <C>         
Long-term debt .............................................................................       $          0        $          0
Shareholders' equity:
     Preferred Stock, par value $.01; 100,000 shares
          authorized; none issued or outstanding ...........................................               --                  --
     Common Stock, par value $.001; 8,000,000 shares
          authorized; 3,000,000 shares issued and outstanding,
          actual; 4,300,000 shares issued and outstanding, as
          adjusted(1) ......................................................................              3,000               4,300
     Paid in capital .......................................................................          2,018,728          10,207,428
          Less: Unearned compensation ......................................................             (3,875)             (3,875)
                                                                                                   ------------        ------------
               Total shareholders' equity ..................................................          2,017,853          10,207,853
                                                                                                   ------------        ------------
                    Total capitalization ...................................................       $  2,017,853        $ 10,207,853
                                                                                                   ============        ============

<FN>
- ----------
(1)  Excludes  464,421  common  shares  issuable  upon the  exercise of warrants
     outstanding  as of May 31, 1996,  of which  107,656 were  exercisable.  See
     "Description  of Capital Stock -- Warrants" and "Management -- Stock Option
     Plan."

</FN>
</TABLE>

                                       15
<PAGE>

                             SELECTED FINANCIAL DATA


   The selected financial data for each of the two years in the period ended May
31, 1996 are derived from financial  statements of the Company,  which have been
audited by Coopers & Lybrand  L.L.P.  The Company has never declared or paid any
cash  dividends  on shares of its capital  stock.  The selected  financial  data
should be read in  conjunction  with  "Management's  Discussion  and Analysis of
Financial  Condition and Results of Operations"  and the Company's  Consolidated
Financial  Statements and related Notes thereto and other financial  information
appearing elsewhere in this Prospectus.


                                                           YEARS ENDED MAY 31,
                                                         -----------------------
                                                            1996         1995
                                                            ----         ----
CONSOLIDATED STATEMENTS OF INCOME:
Net sales ............................................   $5,191,067   $4,193,997
Cost of goods sold ...................................    1,510,479    1,608,568
                                                         ----------   ----------
Gross profit .........................................    3,680,588    2,585,429
     Selling, general and administrative expenses ....    2,141,926    2,012,641
                                                         ----------   ----------
Income from operations ...............................    1,538,662      572,788
Interest expense .....................................       12,991            0
                                                         ----------   ----------
Income before income tax .............................    1,525,671      572,788
Income tax benefit ...................................       86,039            0
                                                         ----------   ----------
Net income ...........................................   $1,611,710   $  572,788
                                                         ==========   ==========
PRO FORMA NET INCOME DATA (UNAUDITED)(1):
Income before income tax .............................   $1,525,671   $  572,788
Pro forma income taxes ...............................      610,039      229,115
                                                         ----------   ----------
Pro forma net income .................................   $  915,632   $  343,673
                                                         ==========   ==========
Pro forma net income per share(2) ....................   $     0.27   $     0.10
                                                         ==========   ==========
Shares used in pro forma net income per share(2) .....    3,329,899    3,329,899
                                                         ==========   ==========

                                                             MAY 31, 1996
                                                    ----------------------------
                                                     ACTUAL       AS ADJUSTED(3)
                                                     ------       --------------
BALANCE SHEET DATA:
Cash and cash equivalents ................          $  91,799      $ 8,281,799
Working capital ..........................          1,191,112        9,381,112
Total assets .............................          2,691,670       10,881,670
Long-term debt ...........................                  0                0
Total shareholders' equity ...............          2,017,853       10,207,853

- ----------
(1) For the two years ended May 31, 1996, Houston elected under Internal Revenue
    Code  Sub-Chapter  K to be  treated  as a  limited  liability  company,  and
    accordingly,  generally  was not subject to federal and state income  taxes.
    For income tax reporting  purposes for these years,  all profits and losses,
    and certain  other  items,  were  passed  through to the members of Houston.
    Since the income of the Company will be taxable  after May 31, 1996,  income
    tax expense for the years ended May 31, 1996 and 1995 has been  presented as
    if the  Company  was a C  corporation  during  those  years.  The income tax
    expense was calculated assuming an effective tax rate of 40%.
(2) Based on  weighted  average  common  shares  and  common  share  equivalents
    outstanding as of May 31, 1996, giving  retroactive  effect to the Company's
    conversion in May 1996 from a limited  liability  company to a  corporation,
    and the conversion of membership interests into Common Stock. See Note 14 of
    Notes to Consolidated Financial Statements.
(3) Adjusted  to give  effect to the sale of  1,300,000  shares of Common  Stock
    offered by the  Company  hereby (at an assumed  offering  price of $7.00 per
    share net of underwriting  discounts and commissions,  before other offering
    expenses,  and exclusive of the Underwriters'  Over-allotment  Option).  See
    "Use of Proceeds" and "Capitalization."


                                       16
<PAGE>

                                   DILUTION

   The net tangible book value of the Company at May 31, 1996 was $1,497,121, or
$0.50 per share.  Without  taking into account any changes in net tangible  book
value  subsequent  to May 31,  1996,  other  than to give  effect to the sale of
1,300,000  shares of Common  Stock  offered by the Company  hereby at an assumed
initial  public  offering  price of $7.00 per share and after  deduction  of the
estimated  underwriting  discount and estimated Offering expenses payable by the
Company  estimated to be $690,000,  the pro forma net tangible book value of the
Company's Common Stock at May 31, 1996 would have been $8,997,121,  or $2.09 per
share. This represents an immediate increase in net tangible book value of $1.59
per share to existing  stockholders  and an  immediate  dilution in net tangible
book value of $4.91 per share to investors  purchasing  shares in this Offering.
The following table illustrates the per share dilution at May 31, 1996:

Assumed initial public offering price(1) ...........................       $7.00
  Net tangible book value before Offering(2) ....................... $ .50
  Increase in net tangible book value attributable to new investors.  1.59
Pro forma net tangible book value after Offering ...................        2.09
                                                                           -----
Dilution to new investors ..........................................       $4.91
                                                                           =====

- ----------
(1) Before deducting the estimated  underwriting  discount and Offering expenses
    to be paid by the Company.
(2) Net tangible book value per share is determined by dividing the net tangible
    book value of the Company  (tangible assets less  liabilities) by the number
    of shares of the Company's Common Stock outstanding at May 31, 1996.

<TABLE>

   The  following  table sets forth,  on a pro forma basis at May 31, 1996,  the
number  of  shares  of  Common  Stock  purchased  from the  Company,  the  total
consideration  paid  and the  average  price  per  share  paid  by the  existing
stockholders  and to be paid by new  investors  based  upon an  assumed  initial
public offering price of $7.00 per share:

<CAPTION>
                                                             SHARES PURCHASED                        CONSIDERATION PAID
                                                    ----------------------------------  ------------------------------------------
                                                                                                                     AVERAGE PRICE
                                                         NUMBER           PERCENT         AMOUNT         PERCENT       PER SHARE
                                                         ------           -------         ------         -------       ---------
<S>                                                    <C>                 <C>          <C>                 <C>          <C>  
Existing stockholders .....................            3,000,000           69.8%        $ 2,017,853(1)      18.1%        $0.67
New investors .............................            1,300,000           30.2%        $ 9,100,000         81.9%        $7.00
                                                     -----------          -----         -----------         -----        -----
  Total ...................................            4,300,000          100.0%        $11,117,853         100.0%       $2.59
                                                     ===========          =====         ===========         =====        =====
<FN>
- ----------
(1) Represents the total shareholders' equity as of May 31, 1996.
</FN>
</TABLE>

   The foregoing table assumes no exercise of outstanding  options and warrants.
Excludes   464,421  common  shares   issuable  upon  the  exercise  of  warrants
outstanding  as of  May  31,  1996,  of  which  107,656  were  exercisable.  See
"Description  of Capital  Stock --  Warrants"  and  "Management  -- Stock Option
Plan."

                                       17

<PAGE>

              MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                     CONDITION AND RESULTS OF OPERATIONS

   The following  discussion is intended to provide an analysis of the Company's
financial  condition and results of operations and should be read in conjunction
with the  Company's  Consolidated  Financial  Statements  and the Notes  thereto
contained  elsewhere in this Prospectus.  The matters  discussed in this section
that  are  not   historical  or  current  facts  deal  with   potential   future
circumstances and developments. Such forward-looking statements include, but are
not limited to, the development and market  acceptance for new products,  trends
in the results of the Company's operations and the mix of product revenues.  The
Company's actual results could differ  materially from the results  discussed in
the forward-looking  statements.  Factors that could cause or contribute to such
differences  include those  discussed below as well as those discussed under the
caption "Risk Factors" and elsewhere in this Prospectus.

OVERVIEW

   M.D. Labs, Inc.  (together with its  subsidiaries,  the "Company")  packages,
markets and distributes  natural dietary  supplements,  consisting  primarily of
herbal products and sports nutrition  products,  as well as a weight  management
chewing gum product. The Company has focused on new product innovation,  such as
its Daily Detox(R) teas targeted to the detoxification herbal tea market and its
Citrium(TM)  chewing  gum  targeted  to the  weight  loss  chewing  gum  market.
Currently,  the Company's products are segmented into three primary  categories:
(i) the all natural herbal tea and  supplements  line,  (ii) the weight loss and
other chewing gum lines, and (iii) the amino acid sports nutrition product line.

   For the fiscal year ended May 31, 1996, the Company's  sales were as follows:
72% from the herbal line;  25% from the chewing gum line; and 3% from the sports
nutrition  product line. The Company does not believe that such historical sales
are  representative  of future  sales  trends  due to high  initial  demand  for
Citrium(TM)  resulting  from  strong  introductory  advertising  and the initial
novelty of the product.  Further, the Company did not enter the sports nutrition
business until January 1996.

   Net sales have  increased to $5.2 million in fiscal 1996 from $4.2 million in
fiscal 1995.  The growth in sales  primarily is  attributable  to the successful
launch of the Citrium(TM)  and Women's  Nature(TM) -- Natural Balance herbal tea
in fiscal  1996,  as well as a  significant  increase  in  international  sales.
International  sales increased to approximately  17.4% of the Company's sales in
fiscal  1996,  as  compared  to  approximately  2.5% in  fiscal  1995.  However,
substantially all of the increase in international  sales was due to the sale of
Citrium(TM) to a large  distributor in Japan,  and there are no assurances  that
these sales will continue at this level in fiscal 1997.

   The  Company   distributes   its   products   through  its   in-house   sales
representatives,  who call on the approximately  8,000  independent  health food
store   operators,   and  through  several  large  domestic  and   international
distributors.  Recently,  the Company  has made  initial  sales to certain  mass
retailers, such as large regional and national retail food and drug stores.

   Generally,  the Company's sales are not seasonal, with the primary exceptions
being (i) an increase in sales at the  beginning of the calendar year related to
new year  fitness  resolutions  and (ii) a decrease in tea sales  during  summer
months.  Currently,  the Company has 26 full-time  employees,  though management
believes this number will increase based upon anticipated Company growth.

   The Company seeks to achieve revenue growth from three primary  sources,  (i)
growth of the Company's existing product lines, (ii) new product development and
(iii) product line and operating company acquisitions.  At the present time, the
Company does not have any understanding,  commitment or agreement  regarding any
acquisition.

   The Company  continues  to focus on new product  innovation.  The Company has
numerous  products in various  stages of research and  development  for possible
introduction in fiscal 1997 and  thereafter,  including a line of coffee chewing
gums,  a  Citrium(TM)  tea,  and new,  complementary  lines of sports  nutrition
supplements.  However,  there can be no  assurance  that any new  product can be
introduced successfully or on a timely basis.

                                       18
<PAGE>

   The  market  for  the  Company's   products  is  characterized  by  extensive
competition,  frequent  new product  introductions,  short  product life cycles,
rapid product  declines,  eroding  profit  margins and changing  preferences  of
consumers. A decline in the demand for any of the Company's products, whether as
a result of competition,  changes in demographic trends or other factors,  could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.

   On May 31, 1996, the Company  exchanged  3,000,000 shares of its common stock
for all of the membership  interest in Houston  Enterprises,  L.L.C., an Arizona
limited liability company  ("Houston"),  and the financial statements at May 31,
1996  reflect  that  exchange.  For the years ended May 31,  1995 and 1996,  the
Company's  predecessor was taxed as a limited liability company.  For income tax
reporting  purposes,  all profits and losses for such years,  and certain  other
items, were passed through to the members of Houston.  Because the income of the
Company  will be  taxable  after May 31,  1996,  certain  temporary  differences
between  financial  and tax  reporting are reflected as an income tax benefit in
the statement of income for the years reported and as deferred tax assets in the
balance sheets for the years reported.

<TABLE>

RESULTS OF OPERATIONS

   The  following  table sets forth the  consolidated  statements  of income and
percentages of net sales represented by the individual line items for the fiscal
years ended May 31, 1996 and 1995.  These operating  results and percentages are
not necessarily indicative of anticipated results for any future period.

<CAPTION>
                                                                YEAR ENDED           PERCENTAGE         YEAR ENDED       PERCENTAGE
                                                               MAY 31, 1996         OF NET SALES       MAY 31, 1995     OF NET SALES
                                                               ------------         ------------       ------------     ------------
<S>                                                             <C>                     <C>             <C>                <C>   
Net sales ..........................................            $5,191,067              100.0%          $4,193,997         100.0%
Cost of goods sold .................................             1,510,479               29.1            1,608,568          38.4
                                                                ----------              -----           ----------         -----
Gross profit .......................................             3,680,588               70.9            2,585,429          61.6
Selling, general & admin. ..........................             2,141,926               41.3            2,012,641          48.0
                                                                ----------              -----           ----------         -----
Income from operations .............................             1,538,622               29.4              572,788          13.7
Interest expense ...................................                12,991                0.3                    0           0.0
Income tax benefit .................................                86,039                1.7                    0           0.0
                                                                ----------              -----           ----------         -----
Net income .........................................            $1,611,710               31.0%          $  572,788          13.7%
                                                                ==========              =====           ==========         =====
</TABLE>

   NET SALES. Net sales for the year ended May were $5.2 million, an increase of
$997,000 or 24% compared to the same period  during  fiscal 1995.  The growth in
sales  primarily is  attributable  to the successful  launch of Citrium(TM)  and
Women's  Nature(TM) -- Natural  Balance  herbal tea in fiscal 1996, as well as a
significant  increase in international  sales.  International sales increased to
approximately  17.4% of the  Company's  net sales in fiscal  1996,  compared  to
approximately 2.5% in fiscal 1995. However, substantially all of the increase in
international sales was due to the sale of Citrium(TM) to a large distributor in
Japan,  and there are no assurances that these sales will continue at this level
in fiscal 1997. Sales of the Company's Naturally Klean(TM) and related products,
and Citrium(TM) products accounted for approximately 51% and 25%,  respectively,
of the Company's net sales for the fiscal year ended May 31, 1996.

   The Company generally sells product on net 30-day terms. However, the Company
has one guaranteed sale agreement with Revco Drug Stores ("Revco").  The Company
shipped  approximately  $161,000 of its Citrium  chewing gum to Revco during the
fiscal year ended May 31, 1996 pursuant to a guaranteed sale agreement  allowing
Revco to return all Citrium not sold 120 days  subsequent to receipt.  The sales
agreement  required  that Revco pay for all sales as the  product  was  actually
sold. For financial reporting  purposes,  only the gum actually sold by Revco is
recorded as sales.  The 120-day return period has lapsed,  and Revco has elected
to retain the unsold gum and remit payment for the sold Citrium. As of September
1, 1996, the Company had not yet received this payment from Revco.

   COST OF GOODS SOLD.  Cost of goods sold for fiscal 1996  decreased  from $1.6
million to $1.5 million, a decrease of $98,000 or approximately 6.1% from fiscal
1995. As a percentage of net sales,  costs of goods sold decreased from 38.4% to
29.1%  between  the  same  periods.   The  reduction   resulted  from  increased
efficiencies in purchasing herbs and other raw materials, as well as fiscal 1996
reductions in the volume of

                                       19
<PAGE>

discounted sales and in the distribution of free sample products and literature.
In  addition,  a  significant  portion  of the  Company's  cost of goods sold is
composed of fixed  costs,  which did not  increase in  proportion  to  increased
fiscal 1996 sales. The Company does not anticipate that this trend will continue
in fiscal 1997, in part because raw material  costs are volatile and outside the
Company's direct control. See "Risk Factors -- Reliance on Outside Suppliers and
Manufacturers."

   SELLING, GENERAL & ADMINISTRATIVE EXPENSES.  Fiscal 1996 selling, general and
administrative  expenses  increased  $129,000  or 6.4%  over  fiscal  1995,  yet
decreased as a percentage of net sales from 48.0% to 41.3% in such periods.  The
dollar  increase in selling,  general and  administrative  expenses is primarily
attributable to the net effect of increases in three expense categories,  offset
by a  significant  decrease  in  another  expense  line  item.  In fiscal  1996,
professional fees increased  $75,000 due to increased  accounting and legal fees
associated  with the  Company's  growth,  and  payroll  increased  approximately
$88,000  due  to  merit  pay  increases  and  the  addition  of  new  personnel.
Additionally,  Company advertising increased  approximately  $179,000 due to the
initial marketing  campaigns required for several new product launches in fiscal
1996,  as well as a general  increase in  advertising  for all of the  Company's
other  products.  These  expense  increases  were offset by the  termination  on
December  31,  1995 of the  Company's  consulting  agreement  with  Pure  Source
International, Ltd., an affiliated British Virgin Island company ("Pure Source")
which  provided  marketing,  purchasing,  promotional  and  other  international
advertising  services for the Company. The Company incurred $353,600 in expenses
under the Pure  Source  arrangement  in fiscal 1995 and $0 in fiscal  1996.  See
"Certain   Transactions."  The  Company  anticipates  significant  increases  in
marketing  and  advertising  expenses  in  fiscal  1997 in  connection  with the
introduction  of new products  and  increased  promotion  of existing  products.
Increased  sales  resulting  from such  expenses may not be realized for several
quarters after such expenses are incurred, if at all.

   On May 31,  1996,  the members of Houston  completed a private  placement  of
portions of their Houston membership  interests,  selling approximately 16.6% of
their interests. The Company did not receive any proceeds from the sale. On that
same date, all members  converted  their  interests into shares of the Company's
Common Stock.  Private  placement  costs  associated  with the  transactions  of
approximately $70,000 were paid by the Company.

   INCOME TAX BENEFIT.  The Company  recognized an $86,000 income tax benefit in
fiscal year 1996 due to the income tax effect of temporary  differences  between
financial  and income tax  reporting  purposes.  For the two years ended May 31,
1996,  Houston  elected  to be  treated  as a  limited  liability  company,  and
generally  was not  subject to federal and state  income  taxes.  The  Company's
income  is  taxable  commencing  June 1,  1996,  and the  Company  estimates  an
effective tax rate for fiscal 1997 of 40%.

INFLATION

   Management  does not believe that inflation has had a material  effect on the
Company's sales or results of operations during the past two fiscal years.

LIQUIDITY AND CAPITAL RESOURCES

   The Company  traditionally has financed its capital needs from net cash flows
from  operations.  In fiscal 1996,  the Company  generated  $1.1 million in cash
flows from operating  activities,  as compared to $475,000 in fiscal 1995. As of
May 31, 1996,  the Company had working  capital of  approximately  $1.2 million,
with a current ratio of 2.77.  Management  believes the Company will continue to
generate cash flows from  operating  activities in the near future.  The Company
anticipates  utilizing  the proceeds  from this  Offering to finance new product
research  and  development  and  product   introduction   and  expanded  general
advertising campaigns,  manufacturing and warehouse automation,  computer system
upgrades,  and for possible product line and/or operating company  acquisitions,
as well as repayment of indebtedness discussed below.

   On March 6, 1996,  the  Company  borrowed  $300,000  from Belfer Labs LLC, an
affiliated company formed by Todd Belfer, president and director of the Company,
and Harvey  Belfer,  father of Todd Belfer and  consultant  and  director of the
Company.  The Belfer Labs Note accrues interest at the rate of 12% per annum and
is payable March 6, 1997. The proceeds of the Belfer Labs Note were  distributed
to the

                                       20
<PAGE>

members of Houston for,  among other things,  the member's tax  liability  which
resulted  from the  profitable  operations of the Company prior to the Company's
conversion  to a  corporation.  On July 23, 1996,  the Company paid  $100,000 in
principal on the note plus accrued interest of $14,100.  Management  anticipates
repaying the remaining  balance  payable on the note with the proceeds from this
Offering. See "Use of Proceeds" and "Certain Transactions."

   The Company does not currently have a working capital line of credit or other
term financing from a financial  institution,  nor has any financial institution
committed to provide any such financing to the Company.


   The Company  believes the net proceeds from this Offering and cash  generated
from operations  will be sufficient to fund its operations  through fiscal 1997.
There can be no assurance, however, that the Company will not require additional
capital in the future,  particularly for acquisitions of products or businesses.
If the Company were required to obtain additional financing in the future, there
can be no  assurance  that such  sources of capital  will be  available on terms
favorable to the Company, if at all.

                                       21
<PAGE>
                                    BUSINESS

GENERAL

   M.D. Labs, Inc., a Delaware corporation (together with its subsidiaries,  the
"Company")   packages,   markets  and  distributes   natural  food  and  dietary
supplements,  consisting  primarily  of herbal  products  and  sports  nutrition
products,  as well as a weight management  chewing gum product.  The Company has
focused on new product  innovation,  such as its Daily Detox(R) teas targeted to
the detoxification herbal tea market and its Citrium(TM) chewing gum targeted to
the weight loss chewing gum market. The Company's products are sold generally to
distributors and to health food, drug and other retail stores.

   The  Company  was  incorporated  in  Delaware  on  February 7, 1996 to be the
successor  to  Houston  Enterprises,  L.L.C.  ("Houston"),  an  Arizona  limited
liability  corporation.  On  May  31,  1996,  the  Company  acquired  all of the
membership  interests in Houston and thereupon  succeeded to Houston's business.
Houston acquired its original line of products from Houston  Enterprises,  Inc.,
an Arizona  corporation,  through an asset purchase  completed in February 1994.
Houston Enterprises, Inc. introduced its first product line in 1987.

   In February  1996,  the Company  purchased  all of the  outstanding  stock of
Belnik Investment Group, Inc., an Arizona  corporation doing business as Freedom
Wholesalers,  Inc. ("Freedom"),  from Messrs. Hooman Nikzad and Todd Belfer. The
purchase  price  consisted of $1,000 plus warrants to purchase  21,000 shares of
the Company's  Common Stock  exercisable at $1.00 per share and vesting in three
equal  annual  installments  commencing  December  31,  1996.  See  "Business --
Products -- Freedom Products" and "Certain Transactions."

   In January  1996,  the Company  acquired  certain  assets of Olympian  Global
L.L.C., an Arizona limited liability company ("Olympian Global") for $50,000 and
a $210,000 note.  The assets  included,  among other things,  rights in Olympian
Global's line of nutritional health supplements and the "PRO-LINE(R)" trademark.
The Company agreed not to market for 36 months under the acquired  trademark any
new  products  that  compete  with  products  sold by Olympian  Global under the
"Olympian  Labs"  trade  name.  The  Company  also is  obligated  to pay certain
royalties  to a former  owner of assets  purchased  from  Olympian  Global.  See
"Business -- Product Royalties."

INDUSTRY BACKGROUND

   According to industry  sources,  the natural and organic  products  industry,
which includes vitamins,  supplements,  herbs,  personal care, natural medicines
and groceries,  and organic  clothing and household  cleaners,  grew over 20% in
1995 to approximately $9 billion in retail sales.  Herbs have been a significant
category in this industry in recent years.  The herb  category,  which  includes
dietary supplement formulas,  capsules,  extracts and teas such as those sold by
the Company,  as well as bulk and medicinal  herb sales,  has been  estimated to
exceed $1 billion in the United  States.  Industry  sources also  indicate  that
sales of sports nutrition products,  excluding  beverages,  were $675 million in
1995. See "Risk Factors -- No Independent Market Studies."

   The  Company  believes  that the growth in its  industry is  attributable  to
several  factors,  including  (i) expansion of natural  product  sales  channels
through natural foods supermarkets, health food stores, mainstream supermarkets,
drug  stores and mail order  catalogs,  (ii) the aging  population  focusing  on
alleviating  the  effects  of  age,  (iii)  increased   consumer  awareness  and
dissemination of academic  studies of the connection  between health and fitness
and nutrition,  and the hazards of chemical agriculture,  and (iv) the perceived
improvements in the regulatory  environment  resulting from the DSHEA. See "Risk
Factors -- Uncertainty and Potential Negative Effects of Government Regulations;
Non-Compliance   with  Government   Regulations"  and  "Business  --  Government
Regulation."

                                       22
<PAGE>

   Industry  data  indicates  that the primary  consumers of natural and organic
products are female, with at least some college education and a median household
income  of  approximately  $30,000.  Consumers  of  sports  nutrition  products,
however,  are  primarily  men aged 24 to 35, with that age group  shrinking  and
consumption by women over 35 increasing.  Such  consumers are  characterized  as
early to adopt new products and susceptible to change product  preferences.  See
"Risk Factors -- Short Product Life Cycles; Dependence on New Products."

   The Company estimates that the market for the Company's products now includes
not only the approximately 8,000 independent and chain health food stores in the
U.S., but also the several  hundred  thousand drug stores,  super  markets,  and
convenience  stores  across  the  country  and,  on  a  direct  response  basis,
individual  consumers.  Management  also believes the market for natural  health
food supplements outside of the United States has become a promising environment
for the Company's products.

STRATEGY

   The  Company is  pursuing a  three-pronged  growth  strategy  focusing on (i)
expansion  of sales of  existing  products  to  current  and new  customers  via
increased  advertising and marketing and  development of additional  channels of
distribution;  (ii)  development of new products which  complement the Company's
existing product lines or address new markets with significant growth potential;
and (iii) acquisition of other companies, products or product lines which, as in
the case of new products  under internal  development,  complement the Company's
existing product lines or address new markets with significant growth potential.
See "Risk Factors -- Limited Industry Experience;  Recent Business Venture," "--
Limited  Capitalization,"  and "--  Management  of Growth."  Key elements of the
strategy are as follows: 

   Build  Brand  Name   Recognition.   The  Company  believes  that  brand  name
recognition  is an  increasingly  important  competitive  factor  in its  target
markets as key customers  tend to align  themselves  with fewer vendors of brand
name products.  The Company believes that it has established  significant  brand
name recognition in detoxification  markets. The Company intends to increase its
marketing and advertising  programs after  completion of the Offering to enhance
brand name  recognition of current  products and facilitate  introduction of new
product  offerings.  Because a  reputation  for quality  products is critical to
establishing  a successful  brand name,  the Company will also focus  efforts on
quality control. See "Risk Factors -- Competition and Low Barriers to Entry."

   Increase  Penetration in Domestic  Health Food Market.  The Company  believes
that the  expansion  of  retail  distribution  channels  and the  strong  growth
characteristics of the nutritional  supplement industry provide the Company with
significant  opportunities  to increase sales. The Company further believes that
increased  brand name  recognition  of the Company's  products will enable it to
increase its  penetration  of shelf space as health food retailers seek to align
themselves with companies  which possess strong brand names,  offer a wide range
of products, demonstrate continued marketing and advertising support and provide
high levels of customer service.

   Build Upon  Established  Customer  Relationships.  The Company's  established
relationships  with  distributors and health food store retailers are based upon
the  Company's  commitment  to a high level of customer  service.  The Company's
direct sales force and management work with direct  accounts,  distributors  and
individual retailers to build knowledge of the Company and its products, in turn
achieving  increased  exposure for these  products. 

   Continue to Introduce New Products and Product  Innovations.  The Company has
introduced  a number  of  innovative  new  products,  including  the  successful
introductions in fiscal 1996 of Citrium(TM)  weight  management  chewing gum and
Women's  Nature(TM)  -- Natural  Balance  herbal tea.  The  Company  obtains new
product concepts through independent  consultants,  naturopathic doctors, market
feed back  gained  from its  distributors  and  direct  sales  force,  and other
sources.  The Company  intends to continue to emphasize the  introduction of new
and  innovative  products not  previously  available in health food stores.  See
"Risk Factors -- Short Product Life Cycle;  Dependence on New Products," and "--
Competition and Low Barriers to Entry."

                                       23
<PAGE>

   Increase  Penetration of  International  Markets.  The Company  believes that
there are substantial  opportunities for growth in foreign markets. For example,
substantial  sales of Citrium  weight  management  chewing gum were  achieved in
Japan in  fiscal  1996,  and  marketing  relationships  have been  initiated  in
numerous  additional  countries.  The  Company  intends to build  upon  existing
relationships  and establish  relationships  in  additional  countries to pursue
growth   opportunities  in  foreign  markets.   See  "Risk  Factors  --  Product
Concentration."

   Supplement  Internal Growth Through Strategic  Acquisitions.  The nutritional
supplement  industry is highly  fragmented with many companies  producing only a
single  product  line  or  single  product.  The  Company  believes  that  it is
positioned strategically to participate in the consolidation of the industry due
to the Company's  increasing  brand name  recognition and access to distribution
channels,  its  ability  to launch new  products,  and the  financial  resources
available upon  completion of this Offering.  The Company has added  significant
products in fiscal 1996 via the acquisition of Freedom and Olympian Global,  and
intends to pursue strategic  acquisition  opportunities  where appropriate.  See
"Risk Factors -- Selection and  Integration  of  Acquisitions"  and "Business --
General."

PRODUCTS

   Certain of the Company's  product  formulations  are marketed under different
packaging and labelling.  The Company currently markets the Naturally  Klean(R),
Daily Detox(R),  Women's Nature(TM),  HerbalPathic(TM),  and Citrium(TM) product
lines.  Through its wholly-owned  subsidiary,  Freedom, the Company also markets
The Stuff(TM) and Naturally  Klean(R)  Herbal Tea,(TM) and under the PRO-LINE(R)
name it markets sports nutrition products such as Super ProLean(TM) Fat Burners,
Amino Formula "1240"(TM),  and Chromoplex(TM).  The Naturally Klean(R) and Daily
Detox(R)  lines are focused on the  detoxification  market.  These  products are
available in teas, capsules and extracts.  Women's Nature(TM) herbal tea and the
HerbalPathic(TM) single herb supplements support and enhance overall health. The
Company's  Citrium(TM)  product line addresses the weight management market. The
Freedom  products  are  intended for the  detoxification  and energy  supplement
markets and the  PRO-LINE(R)  products are formulated  for the sports  nutrition
market.  See "Risk  Factors -- Product  Concentration,"  and "--  Difficulty  of
Product Positioning."

 M.D. Labs Products

   Naturally  Klean(R).  The Naturally  Klean(R) product line consists of herbal
teas and capsules  designed to stimulate the body's natural cleansing process to
flush out toxins stored in the body's  eliminatory  system.  The tea consists of
nine herbs, is caffeine free, and available in three flavors:  original  herbal,
passion fruit, and lemon-lime. This product is also sold by Freedom.

   Daily  Detox(R).  The Daily  Detox(R)  product line  consists of herbal teas,
capsules   and  liquid   extracts   designed  to  support  the  body's   natural
detoxification  and cleansing process on a daily basis. The line is divided into
two herbal  formulas:  Daily Detox(R) with 11 herbs in two flavors,  apple cider
cinnamon and original herbal, and Daily Detox(R) II, which is produced with nine
herbs in  passion  fruit and  original  herbal tea  flavors.  Each blend is also
available as encapsulated herbs and as a liquid herbal extract.

   Women's  Nature(TM).  The Women's Nature(TM) product line consists of Women's
Nature(TM) PMS and Women's  Nature(TM) -- Natural Balance.  The product line was
developed by a naturopathic doctor. The products include Chinese,  Ayurvedic and
Western herbs.  Women's  Nature(TM) PMS is designed to help balance  naturally a
woman's  system to alleviate  the symptoms of  pre-menstrual  syndrome  ("PMS"),
including cramps,  water retention,  fatigue and mood swings. This product comes
in two flavors, original and raspberry. Women's Nature(TM) -- Natural Balance is
designed to promote the natural balance of the female system.

   HerbalPathic(TM).  The HerbalPathic(TM)  product line consists of five single
herb supplements.  These products are encapsulated with standardized extracts of
(i) echinacea  (intended to aid the body's natural immune  system),  (ii) garlic
(intended to normalize blood pressure,  bronchial congestion,  allergies, colds,
digestion and general  intestinal  functions),  (iii) ginkgo biloba (intended to
aid blood circulation through the central nervous system,  lungs and kidneys and
to aid nerve damage repair, and eye sight  improvement),  (iv) ginseng (intended
to increase energy level, normalize blood pressure, reduce cholesterol and

                                       24
<PAGE>

combat  fatigue) and (v) kudzu  (intended  for headache  relief from  dizziness,
diarrhea,  and some effects of alcoholism as well as  improvement  in the body's
circulation).  The  product is  competitively  priced and  packaged in a sealed,
tamper-resistant safety container.

   Citrium(TM)  Lean  &  Trim  Chewing  Gum.   Citrium(TM)  Lean  &  Trim  is  a
CitriMax-based weight management chewing gum manufactured in accordance with the
Company's   specifications.   Citrium(TM)  combines  CitriMax,   ChromeMate  and
L-Carnitine,  three  all-natural,  weight  management  ingredients  designed  to
control  appetite,  balance blood sugar levels and stimulate the body's  natural
fat burning metabolism.

 Freedom Products

   The Stuff(TM) and Naturally Klean(R) Herbal Tea. The Stuff(TM) powdered drink
is designed to eliminate  toxins in the body temporarily by absorbing toxins and
other  unnatural  substances  in the urinary tract and flushing them out through
the colon.  The  Stuff(TM)  is  available  in grape,  apple and orange  flavors.
Naturally  Klean(R) herbal tea is discussed  above. The Company has discontinued
selling its  Naturally  High(TM)  herbal  energy  product.  See "Risk Factors --
Effect of Discontinued Product."

 Sports Nutrition Products

   Super   ProLean(TM)  Fat  Burners,   DHEA,   Amino  Formula   "1240"(TM)  and
Chromoplex(TM).  The  PRO-LINE(R)  products  consist of a variety of nutritional
supplements formulated for athletes. Included in this product line are the Super
ProLean(TM)  Fat  Burners,  a natural  weight  management  aid,  DHEA, a hormone
supplement  intended for cell  rejuvination,  Amino  Formula  "1240"(TM)  to aid
athletes in muscular recovery,  and Chromoplex(TM),  a chromium supplement which
combines two forms of chromium to stabilize  insulin  levels and act as a weight
management  supplement.  The Company entered the sports nutrition  business upon
acquiring  certain  assets from  Olympian  Global in January  1996.  The Company
believes  that  Olympian  Global  may  have  breached  certain  aspects  of  the
acquisition   agreement   relating  to  the  trademark  and  trade  name  rights
transferred thereunder.  The Company is unable to predict the extent (if any) to
which its rights to the acquired  trademarks  and trade names may be affected by
this matter.  However, the Company believes that its efforts to expand its lines
of sports nutrition  offerings will not be materially  adversely affected should
restrictions exist with respect to its rights to use the acquired trademarks and
trade names.

   The Company is in the process of  implementing  two extensions of its current
line of sports  nutrition  offerings.  The Company is  developing  a new line of
premium sports nutrition products to be marketed to health food stores and gyms.
The Company also is developing a separate line of sports  nutrition  products to
be marketed exclusively through professional  trainers.  The Company anticipates
that the new product lines will include weight management products.  The Company
intends to use a portion  of the  proceeds  from the sale of the Shares  offered
hereby in connection  with the  development  and  introduction  of these product
lines. See "Use of Proceeds." There can be no assurance that either product line
can be introduced successfully.  See "Risk Factors -- Short Product Life Cycles;
Dependence on New Products" and "--  Substantial  Portion of Proceeds to be Used
for New Product Introduction."

   Although  the above  products are listed with  indications  for use for which
they  have  been  designed,  the  Company  does not  necessarily  have  complete
scientific  substantiation  for  such  uses and the  Company  may not be able to
specifically  label and promote the products  for the  indicated  purposes.  The
purposes stated above are based on alternative  health  concepts,  which are not
necessarily  recognized by the conventional  medical  establishment,  or by such
regulatory  authorities  as the FDA and the FTC.  As  discussed  in the  section
"Business  --  Government  Regulation"  the Company may be required to limit the
promotional  and marketing  claims which it may make as  regulatory  enforcement
practices  are  clarified and as the Company moves to bring itself into material
compliance with regulatory requirements.  There is no assurance that the Company
will be able to  effectively  market its products  absent the ability to promote
them for the above  purposes.  See "Risk  Factors --  Uncertainty  and Potential
Negative  Effects  of  Government   Regulations"  and  "--  Non-Compliance  with
Government Regulations."

                                       25
<PAGE>

PRODUCT PLANNING, DEVELOPMENT AND ACQUISITION

   The Company  engages in the planning,  development  and  distribution of new,
specialty dietary supplements,  weight management and sports nutrition products.
See "Risk Factors -- Short Product Life Cycles;  Dependence on New Products" and
"--  Reliance  on Others to Develop  Products."  Although  it does not  maintain
in-house  research and formulation  expertise,  the Company engages  independent
consultants,  naturopathic  doctors,  and  other  experts  to  assist  it in the
development  of new  products.  Ideas for new products  come from many  sources,
including  the  Company's  management  and  consultants,   market  feedback  and
demographic  trend  analysis.  In addition,  some  products are presented to the
Company for acquisition.

   The Company  works to develop  innovative,  cost  effective new products from
conception  to full  production  including  the creation of product  samples and
packaging mock-ups. Each product is intended to achieve a high level of customer
satisfaction.  The Company estimates that research and development  expenditures
during fiscal 1995 and 1996 were approximately $1,424 and $781, respectively. In
addition, a substantial portion of the Company's product development  activities
are conducted in conjunction with third-party suppliers and manufacturers, which
generally invoice the Company for product ordered while not invoicing separately
for development costs associated with such products.

PRODUCTION

   The  Company  orders the raw  materials  used in its  products  from  various
sources, most of which are outside of the United States. The Company's principal
raw material suppliers are Marcor Development, Stryka Botanics, Interhealth, San
Francisco  Herb  Company  and Stauber  Performance,  Ltd.  The Company  receives
directly and inspects a portion of such materials prior to trans-shipment to its
manufacturers.  Most raw materials are shipped directly to the manufacturers for
inspection, fumigation and quarantine, if necessary, and processing.

   The Company's  products are obtained through oral agreements with independent
third-party manufacturers and manufacturers' representatives, primarily Business
Development  Labs,  Inc.  and  Willow   International   Marketing,   Inc.  These
manufacturers  agree to  produce  products  in  accordance  with  the  Company's
specifications.  All  finished  products  are shipped to the Company in bulk for
packaging,  labelling,  and in-house  order  fulfillment.  See "Risk  Factors --
Absence of Clinical Studies,  Scientific Review and Testing." The Company has no
written  agreements  with its third-party  manufacturers  governing the services
they  provide.   See  "Risk  Factors  --  Reliance  on  Outside   Suppliers  and
Manufacturers."

   The Company  anticipates  that it will  develop the  capability  to perform a
significant portion of its production  capability internally over the next year,
but there can be no assurance that such  capability will be developed or that it
will provide significant cost savings if developed.

   The Company is  contemplating  the  development of an in-house  manufacturing
facility for its products.  The manufacture of dietary supplements is subject to
a requirement for conformance to Good Manufacturing  Practices. See "Business --
Government  Regulation."  The Company  therefore  will be required to  establish
facilities for the laboratory testing of incoming raw materials;  control of raw
materials; storage and handling;  documentation of manufacturing procedures; and
final product quality assurance  testing.  These  requirements also apply to the
Company's  existing  repackaging  procedures.   The  full  extent  of  the  Good
Manufacturing  Practices  requirements is not yet known, but it is expected that
this will require the Company to hire  additional  skilled  personnel,  purchase
specialized technical equipment,  and set aside portions of its facility for the
support and maintenance of proper good manufacturing practice procedures.

MARKETING

   The Company's  marketing  strategy is to offer  quality,  unique  products in
niche markets with distinguishable  characteristics,  such as detoxifying herbal
teas, herbs designed to aid digestion and herbal tea for PMS, weight  management
chewing gum and the like. The Company's  strategy also includes  positioning its
products as innovative, competitively priced and effective.

   The Company  presently sells its products  through  distributors and brokers,
combined with an in- house direct sales force,  into drug stores,  supermarkets,
sporting  goods  stores,  and other  high  volume  retailers,  and to  consumers
directly. The Company's three largest customers accounted for approximately

                                       26
<PAGE>

$1.25 million in sales,  or  approximately  24.0% of fiscal 1996 net sales.  The
Company supports its marketing strategy with a national  advertising campaign in
the  print  media,  mainstream  sports  and  fashion  magazines  and  television
advertising,  all prepared and placed using the Company's  public  relations and
advertising  departments.  The Company  advertises in publications such as Time,
Vegetarian Times, Let's Live and Natural Health. The Company intends to continue
to use full-color brochures,  flyers, floor and counter displays,  packaging and
labels  created by its in-house  advertising  and marketing  department for each
product. See "Risk Factors -- Accounts Receivable" and "-- No Independent Market
Studies."   The  Company  also  plans  to  increase  its  share  of  the  herbal
detoxification  market  through  trade  shows,  advertising,  public  relations,
corporate  communications and the aggressive  marketing of its natural products,
including direct response and mail order marketing.

   The Company also  publishes a periodic  multiple page  newsletter  called the
Health  Advocate  which  contains  articles  related  to  the  natural  products
industry,  general  health,  the  environment  and recent events at the Company.
Distribution generally includes health food retailers and wholesalers, trade and
non-profit organizations,  health professionals, and the media. The Company also
operates a "Press Alert" marketing program through which it informs the media of
newsworthy  events  and  information  related to health,  the  environment,  the
natural products  industry,  and recent Company events. As a policy, the Company
makes decisions with consideration to their environmental impact,  including the
production of packaging, stationary, labels, and the like.

   To capitalize on the increasing  international  demand for alternative health
care products,  the Company's  strategy also includes  increasing  product sales
through marketing abroad using foreign  distributors and brokers,  export guides
and trade shows. The Company has initiated  distribution in Canada,  Mexico, the
United Kingdom,  Japan,  Thailand,  Korea, Taiwan,  Australia,  Greece and other
countries,  and intends to establish  distribution in additional  countries.  To
date, the majority of international sales have been effected in Japan. See "Risk
Factors -- Customer  Concentration"  and "-- Risks Associated With International
Sales."

COMPETITION

   Although the Company  believes that its herbal  detoxification  products were
among the first of such products marketed  nationwide,  competing  products have
been introduced into the market. Similarly,  while the Company's Citrium(TM) has
gained rapid  acceptance in the market,  the Company has  experienced  increased
competition  for  market  share.  The  market  for  the  Company's  products  is
characterized  by  competitive  factors  such  as  product   innovation,   brand
recognition and effective  marketing and distribution.  The Company's  principal
competitive  advantage in the marketplace  has been the specialty  nature of its
products  and the  market  niches  they  occupy.  By  focusing  on  high-margin,
specialty products with innovative  formulations and packaging,  the Company has
enhanced its competitive position.  Nevertheless, the market for natural dietary
supplements, weight management and sports nutrition products is characterized by
extensive competition,  frequent new product  introductions,  short product life
cycles, rapid price declines and eroding profit margins,  together with changing
customer  preferences and demographics.  The Company expects to face substantial
competition  in its efforts to capture and maintain a market share in its target
markets.  There  are a number  of  companies  which  currently  offer  competing
products, and additional competition could be expected. In addition, there are a
variety  of  channels  of  distribution  for  dietary  supplements  and  for the
Company's other products  including  direct  response  marketing and multi-level
distribution,  although the latter is not  utilized by the Company.  Many of the
Company's existing competitors have greater financial,  marketing,  distribution
and research  capabilities than the Company. The performance of the Company will
depend on its ability to develop and market new products  that can gain customer
acceptance and loyalty, as well as the Company's ability to adapt to its product
offerings to meet changing  market  conditions,  including  price  pressures and
other factors. See "Risk Factors -- Competition and Low Barriers to Entry."

PROPRIETARY RIGHTS: TRADE NAMES, TRADEMARKS AND COPYRIGHTS

   The Company owns registrations issued by the U.S. Pat. Off. for the following
trademarks:  Naturally Klean(R), Daily Detox(R), and Daily Klean(R). The Company
entered  into  an  agreement  with  Olympian  Global  in  January  1996  for the
acquisition of rights to the federally-registered trademark, PRO-LINE(R),

                                       27
<PAGE>

as well as certain related names and marks. The Company believes Olympian Global
may have breached certain aspects of the acquisition  agreement  relating to the
trademark and trade name rights transferred thereunder. The Company is unable to
predict the extent (if any) to which its rights to the  assigned  trademark  and
trade  name may be  affected  by this  matter.  See  "Business  --  Products  --
PRO-LINE(R)  Products."  The U.S. Pat. Off. has issued a Notice of Allowance for
the following trademarks: Woman's Nature(TM), Daily Herbal(TM), and Citrium(TM).
Applications  for federal  registration  have been filed with the U.S. Pat. Off.
for the following trademark and servicemark:  "M.D. Labs." The Company has filed
applications for Citrium(TM) in the European Community (CTM) and in South Korea.
For all products in development, name searches and applications for registration
are  submitted  regularly.  See "Risk  Factors  --  Uncertainty  of  Proprietary
Rights."

   The Houston International tradename has not been registered and an associated
logo has not been registered as a trademark, though the Company claims rights to
use the  Houston  International  trade name under  common  law.  The Company has
recorded a fictitious  name  certificate in Maricopa  County,  Arizona,  for the
Houston  International  name.  The Houston  International  name and logo will be
phased out over a period of time.

PRODUCT ROYALTIES

   The Company has entered into a royalty agreement regarding Women's Nature(TM)
PMS herbal tea with a  consultant  (the "WN  Consultant"),  which  calls for the
payment of a royalty of nine cents ($0.09) for each unit of the product sold for
18 months from March 15, 1995,  the date the first unit was sold,  and a royalty
of five cents ($0.05) thereafter (the "Women's  Nature(TM)  Royalty  Contract").
The Women's  Nature(TM)  Royalty Contract calls for the WN Consultant to aid the
Company in developing Women's  Nature(TM) PMS herbal tea through  consultations,
research,  formulation  experiments and other procedures necessary to design the
product. The WN Consultant reserved the right to examine and approve all product
labeling, press releases, brochures and other material used to promote or market
the product prior to distribution.  The original  three-year term of the Women's
Nature(TM)  Contract  expires on March 14, 1998,  three years from its effective
date,  and is  automatically  renewed for an additional  three-year  term unless
either party provides advance written notice of intent not to renew prior to the
end of any such term.  On such  notice,  the  Company is entitled to continue to
sell Women's  Nature(TM) PMS herbal tea and use the WN  Consultant's  name until
all  inventory in stock and/or on order is  exhausted.  Thereafter,  the Company
forfeits the right to use any reference to the WN Consultant in association with
Women's  Nature(TM)  PMS herbal tea and the WN Consultant  forfeits the right to
any royalty  payments for any sales occurring after the end of the last term and
the exhaustion of all inventory in stock and/or on order. The Women's Nature(TM)
Royalty Contract also contains non-disclosure and non-competition provisions.

   The Company has entered into an additional  agreement  with the WN Consultant
dated February 21, 1996,  governing Women's Nature(TM) -- Natural Balance herbal
tea and calling for the same terms, including royalties and automatic renewal of
its  three-year  term, as apply under the Women's  Nature(TM)  Royalty  Contract
discussed above.

   The  Company's  obligation  to pay  royalties  with  respect  to the sales of
Citrium(TM)  has been  terminated in September  1996. The Company also agreed to
pay a former owner of the assets  purchased from Olympian Global a royalty of 3%
of the gross  selling  price of each unit of  PRO-LINE(R)  product sold during a
24-month period  commencing  February 1, 1996.  Olympian Global  guaranteed that
gross monthly sales of the PRO-LINE(R)  products would average $40,000 per month
during the  six-month  period  following  closing,  and agreed that if the total
gross  sales  for such  products  during  the  six-month  period  were less than
$240,000,  the principal  balance due under the Company's  note  ($160,000 as of
August  31,  1996)  would  be  reduced  by the  same  amount,  up to a  $160,000
reduction.  Through July 31, 1996,  the Company sold  approximately  $224,000 of
PRO-LINE(R)  products;  however, a formal reduction in the note has not yet been
prepared.  The note also provides that if certain sales levels are reached prior
to January 13, 1997,  the Company must pay an additional  $40,000.  The Olympian
Global note is payable in full at the earlier of February  1997 or 30 days after
completion of the Company's  initial public offering.  The Company believes that
Olympian Global may have breached  certain aspects of the acquisition  agreement
relating

                                       28
<PAGE>

to the trademark and trade name rights  transferred  thereunder.  The Company is
unable  to  predict  the  extent  (if any) to which its  rights to the  acquired
trademarks  and trade  names or the  payment  obligations  under the note may be
affected by this matter.

PRODUCT LIABILITY

   The natural dietary  supplement,  weight loss management and sports nutrition
markets  are  subject  to  product  liability  claims.  Many  of  the  Company's
competitors  have been sued for injuries  alleged to have occured as a result of
using their products.  Recently,  several  companies have been sued for injuries
and wrongful  death  arising out of the use of products  containing  ma huang or
ephedrine.  The Company  marketed a product  containing  ma huang under the name
Naturally  High(TM).  The  Company  has  discontinued  all  sales  of  Naturally
High(TM)and  has not received any notice of any claim  against it arising out of
its sale of such products.

   The Company has not been sued on the basis of any product  liability claim to
date. Because of the inherently  differing  sensitivities of various individuals
to certain  chemicals and chemical  combinations  found in dietary  supplements,
some risk of product liability is unavoidable. The Company has purchased product
and general liability  insurance with general aggregate limits of $2 million and
a $3 million excess liability umbrella policy. Such policies provide coverage of
up to $1  million  for each  occurrence.  The  policies  are  subject  to annual
renewal.  There can be no assurance  that  liability  claims will not exceed the
coverage  limit or be excluded by coverage  limitations  or that such  insurance
will  continue  to be  available  on  commercially  reasonable  terms or at all.
Consequently,  product  liability claims could have a material adverse effect on
the business,  financial condition and results of operations of the Company. The
Company has not  experienced  any product  liability  claims to date.  See "Risk
Factors -- Effect of  Discontinued  Product"  and "-- Risk of Product  Liability
Claims."

GOVERNMENT REGULATION

   The formulation,  processing, packaging, labeling, product claims advertising
and marketing, including direct marketing, of the Company's products are subject
to  regulation  in the U.S. by one or more federal  agencies,  including but not
limited  to the FDA,  the FTC,  the CPSC,  the USDA,  the United  States  Postal
Service, and the EPA. These activities are also regulated by various agencies of
the states and localities in which the Company's products are sold. In addition,
the Company is also subject to regulation by the Occupational  Safety and Health
Administration.

   The most extensive regulations applicable to the Company's operations is that
of the FDA enforcement under the FDCA. This statute, with which the Company must
comply,  establishes a comprehensive  regulatory  scheme  enforceable by various
civil and criminal actions.  The Company's  facilities are subject to inspection
and review by federal and state authorities.

   The Company's  business is in the industry commonly known as the "health food
industry"  which has been the subject of many years of  vigorous  administrative
and judicial  enforcement  by the FDA. The FDA has taken the position  that many
businesses  which  conduct  operations  similar to those of the  Company  are to
varying  extents in violation of the law. These efforts by the FDA have resulted
in a series of judicial decisions and legislative  enactments which have defined
the future course of this  industry.  On October 23, 1994, the DSHEA was enacted
and amended the FDCA,  particularly with regard to dietary  supplements.  In the
judgment  of the  Company,  this  new  law has  been  favorable  to the  dietary
supplement  industry but,  inasmuch as many aspects of the law have not yet been
fully interpreted or judicially applied, there is no assurance that this will in
fact continue to be the case.

   First and foremost,  the DSHEA  legislation  creates a new statutory class of
"dietary supplements." This new class includes vitamins,  minerals, herbs, amino
acids and other dietary  substances  for human use to supplement  the diet.  The
statute  establishes a new safety standard which dietary  supplements  must meet
and, in certain cases, authorizes the FDA to order dangerous dietary supplements
off the market. The statute  potentially  authorizes dietary supplements to make
so-called  structure  and function  claims  without  advance FDA  approval,  but
requires companies to give the FDA special notice when such claims are made, and
also to provide special labeling for products which make such claims.

   However,  procedures  previously  established  by the  FDA  for  approval  of
so-called  "health  claim"  messages  remain  in  full  force  and  effect.  The
regulations prohibit the use of any claim for a dietary

                                       29
<PAGE>

supplement,  unless the health  claim is  supported  by  significant  scientific
agreement  and is  pre-approved  by the  FDA.  To date,  the FDA has  been  very
restrictive  in its  approach  to "health  claims" and has  approved  the use of
health  claims for  dietary  supplements  only in  connection  with  calcium and
osteoporosis, and folic acid and neural tube defects.

   The  Company's  business  is in large  part  dependent  on the  making of the
so-called  structure  and  function  claims,  which do not  require  advance FDA
approval.  However,  the dividing line between  "health claims" which do require
advance approval, and "structure and function claims" which do not, has not been
definitively determined. There is no assurance that claims of the type which the
Company  is  currently  making  will not become  subject to an advance  approval
requirement.

   Under DSHEA, a dietary  supplement  which contains a new dietary  ingredient,
one not on the market as of October 15, 1994, will require evidence of a history
of use or evidence of safety,  establishing  that it will reasonably be expected
to be safe,  such evidence to be provided by the  manufacturer or distributor to
FDA at least 75 days before  commencing  to market  such a product.  Among other
changes,  the new law prevents the further regulation of dietary  ingredients as
"food   additives"   and   establishes   a  commission   to  study  and  provide
recommendations  for the  regulation of label claims and  statements for dietary
supplements,  including the use of literature in connection with sale of dietary
supplements and procedures for the evaluation of such claims.

   Pursuant  to the new  law,  the  FDA has  published  notices  in the  Federal
Register  asking  for  public  comments  on  proposals  for   implementing   the
requirements  of the  legislation.  These proposals would require changes in the
Company's labeling for its products,  but the regulations are not yet in effect.
Consequently,  the FDA has  not  finally  reconciled  its  existing  enforcement
practice with the new legislation described above.  Businesses in this industry,
including the Company,  are introducing various products in reliance on industry
interpretations  of the law, which  interpretations  have not yet been proven or
judicially tested.

   Therefore,  the Company cannot  determine to what extent any new,  changed or
amended  regulations or enforcement  practices,  when and if  implemented,  will
affect its business. Such actions could, among other things, require expanded or
different labeling, the recall or discontinuance of certain products, additional
record keeping and expanded documentation of the properties of certain products,
and more complete scientific  substantiation.  For example,  the new legislation
requires that dietary  supplements  be  manufactured  in  accordance  with "Good
Manufacturing  Practices."  The FDA has not yet  identified  what  the  specific
practices will be. The Good Manufacturing  Practices requirement will affect the
businesses who supply finished  dosage  products to the Company.  If the Company
implements its plans to undertake its own manufacturing operations,  the Company
will also be required to comply with these manufacturing practices.

   Similarly,  marketing  and  sale of  dietary  supplements  is to some  extent
dependent on avoiding a drug  classification for such products.  The FDA has not
yet delineated how the drug versus dietary supplement will be made under the new
law.  Classification as a drug and potentially as a "new drug" might prevent the
Company from continuing to sell, or from introducing  certain types of products.
Some of the  Company's  products may be regulated  separately  as foods  without
invoking the provisions of the law applicable to dietary  supplements.  This may
also require label changes to conform to FDA's separate food regulations.

   Separate and apart from FDA  regulations  and  enforcement,  the  promotional
activities  of the Company are also subject to  regulation by the FTC and to the
extent of the use of the  mails,  by the United  States  Postal  Service.  These
agencies  impact  on the  Company's  activities  primarily  in the  areas of the
requirements for "truth in advertising." The Company's business is in large part
based upon the  popularization  of products and ingredients for which there have
been reports in the lay or scientific literature as to their usefulness in human
nutrition  and  health.  These  reports  are  often  preliminary,  and  are  not
necessarily  supported and  documented by the types of scientific  studies which
would  satisfy  the FTC and  FDA.  The FTC has  recently  commenced  proceedings
against other businesses in the health food industry challenging the sufficiency
of their  "substantiation"  in support of specific product  marketing claims. As
FDA moves forward to finalize the  regulations  under DSHEA, it is expected that
the FTC, which to some

                                       30
<PAGE>

extent works cooperatively with FDA, may also step up its enforcement activities
with regard to  substantiation  requirements  for promotional  claims.  There is
therefore  no  assurance  that the Company  will be able to continue  making the
types of promotional  claims which have previously  characterized  the Company's
marketing efforts.

   The management of the Company  believes that it is in substantial  compliance
with existing regulatory and enforcement  requirements,  taking into account the
manner in which other  companies  market and  promote  their  products,  and the
present pattern of enforcement  activities by the respective  agencies discussed
above.  There is no  assurance  that the  present  enforcement  policies  of the
regulatory  agencies will continue either in general, or specifically as regards
the Company.  Company  management  expects that the regulatory  and  enforcement
requirements  will to some extent  become more  stringent,  and that the Company
will have to adapt its marketing and promotional activities accordingly.  All or
any  of the  change  which  will  be  required  in the  Company's  labeling  and
promotional  activities  could have a material  adverse  effect on the Company's
business,  financial  condition and results of operations.  See "Risk Factors --
Absence of Clinical Studies, Scientific Review and Testing," "-- Uncertainty and
Potential Negative Effect of Government Regulations" and "-- Non-Compliance with
Government Regulations."

   Government  regulations in foreign  countries,  where the Company may wish to
commence sales,  may also prevent or delay entry into such markets.  The Company
may be required  to  reformulate  or  otherwise  adapt its  products in order to
comply with the requirements of foreign  countries.  Some foreign  countries may
prohibit the sales of products  which the Company is  authorized  to sell in the
United  States.  There is no  assurance  that the Company will be able to comply
with the applicable requirements of foreign countries.

EMPLOYEES

   As of August 15, 1996,  the Company had 26 employees,  19 of whom were leased
through an employee leasing company,  Employee Solutions,  Inc., of which Harvey
Belfer, a director and consultant to the Company, is a director. See "Management
- -- Executive  Officers and  Directors"  and "Certain  Transactions."  Six of the
Company's  employees  are in sales,  seven in shipping and  receiving,  three in
accounting, two in advertising and public relations and two in consumer service.
The remainder of the Company's employees,  including the officers, serve general
and administrative  functions.  None of the Company's employees are covered by a
collective bargaining agreement.

FACILITIES

   In October  1995,  the Company  moved into a 14,000 square foot leased office
and warehouse facility in Tempe, Arizona. Management believes that this facility
provides sufficient space for the Company's current operations,  but anticipates
that  additional  space will be needed during fiscal 1997.  See "Risk Factors --
Limited  Capitalization."  The Company  believes that additional  suitable space
will be available on commercially  reasonable  terms.  The lease currently calls
for  monthly  rent of $6,941,  increasing  to $7,288 in August  1997,  $7,652 in
August 1998 and $8,035 in August 1999, and expires on July 31, 2000. The Company
also intends to establish a 10,000 square foot manufacturing facility by the end
of the fiscal year. See "Use of Proceeds."

TRADE ASSOCIATIONS

   The Company belongs to a number of trade associations, including the American
Botanical Council, the American Herbal Products  Association,  the Herb Research
Foundation, the Canadian Health Food Association, the World Watch Institute, and
the National Nutritional Foods Association, and is a contributor to Citizens for
Health.

LITIGATION

   The Company has  received  correspondence  from an overseas  trading  company
threatening  to  institute  litigation  in Japan based on  allegations  that the
Company  breached a contract with the trading company by failing to designate it
the exclusive  distributor  of  Citrium(TM)  in Japan.  The  trading  company is
claiming damages of $500,000. No complaint has been filed in this matter at this
time. The Company is in the initial stages of reviewing the correspondence,  and
it will take appropriate responsive measures if a complaint is filed.

                                      31
<PAGE>

<TABLE>
                                   MANAGEMENT

EXECUTIVE OFFICERS AND DIRECTORS

<CAPTION>
             NAME                   AGE                          POSITION
             ----                   ---                          --------
<S>                                 <C>   <C>                                 
Hooman Nikzad ...................   30    Chief Executive Officer, Director
Todd P. Belfer ..................   28    President, Director
Faradjollah "Fred" Djahandideh...   55    Vice President, Operations, Secretary/Treasurer, Director
Bradley A. Denton ...............   32    Chief Financial Officer, Vice President, Assistant Secretary
Harvey A. Belfer ................   58    Director
Allan Richard Lyons(1) ..........   55    Director
Kenneth A. Steel, Jr.(1)  .......   38    Director

<FN>
- ----------
(1) Member of the Audit Committee.
</FN>
</TABLE>

   HOOMAN NIKZAD. Mr. Nikzad has been the Chief Executive Officer and a Director
of the  Company  since its  inception.  He was also a member and  manager of the
Company's  predecessor,  Houston.  In September 1990, Mr. Nikzad  co-founded Pro
Pay,  Inc. a staff  leasing  firm,  which he and his co-owner sold to a publicly
traded company, Employee Solutions, Inc., in October 1994.

   TODD P.  BELFER.  Todd  Belfer has been the  President  and a Director of the
Company since its  inception.  He was also a member and manager of the Company's
predecessor,  Houston.  From  May  1991 to  December  1995,  he  served  as Vice
President  of  Marketing  and  Investor   Relations  and  Director  of  Employee
Solutions,  Inc., an employee  leasing  company based in Phoenix,  Arizona.  Mr.
Belfer  currently  works  part-time  for the Company.  Mr.  Belfer is the son of
Harvey Belfer, a Director of and consultant to the Company.

   FRED DJAHANDIDEH. Mr. Djahandideh has been the Vice President, Operations and
Secretary/Treasurer  and a Director of the Company since its  inception.  He was
also a member and manager of the Company's  predecessor.  From 1990 to 1992, Mr.
Djahandideh was a consultant for Momtaz Textile,  Inc., an import/export textile
company based in Los Angeles,  California.  Mr.  Djahandideh was instrumental in
developing  new herbal and weight  management  products for the Company,  and is
responsible  for  procuring  many  of the  ingredients  used  in  the  Company's
products.

   BRADLEY A. DENTON.  Mr. Denton, a Certified Public  Accountant,  has been the
Company's  Chief  Financial  Officer since its inception.  He was also the Chief
Financial Officer of the Company's  predecessor,  Houston,  since December 1995.
From October 1993 to December  1995, he was an Assistant Vice President at First
Interstate  Bank,  Southwest  Region,  Financial  Advisory  Services  Group,  in
Phoenix,  Arizona.  From  December  1991 to October 1993, he was an Associate at
Donaldson,  Lufkin & Jenrette  Securities  Corporation,  New York City, where he
worked in the firm's  Taxable  Fixed Income and Real Estate  Investment  Banking
Groups.

   HARVEY A. BELFER.  Harvey Belfer has been a Director of the Company since its
inception. He was also a member of the Company's predecessor,  Houston. In 1991,
he co-founded  Employee  Solutions,  Inc., an employee  leasing company based in
Phoenix,  Arizona,  of which he has been a Director since its inception.  He was
the President of Employee  Solutions,  Inc. from inception  until June 1996, and
also served as its Chief Executive Officer. From 1984 to 1991, Mr. Belfer was an
executive officer of Contract  Personnel Systems,  Inc. and Corporate  Personnel
Services,  Inc., firms engaged in the staff leasing business.  Mr. Belfer serves
as a consultant to the Company and is the father of the Company's President.

   ALLAN  RICHARD  LYONS.  Mr.  Lyons has been a Director of the  Company  since
September  1996.  Since 1968,  he has been a Certified  Public  Accountant  with
Piaker & Lyons,  P.C.  in Vestal,  New York.  My Lyons has been  Chairman of the
Board of Piaker & Lyons since  November 1993. He is also a director of The Score
Board, Inc., a Cherry Hill, New Jersey,  marketer of telephone and trading cards
and other  sports and  entertainment-related  products  and of  Franklin  Credit
Management Corp., a New York specialty consumer finance company.

                                       32
<PAGE>

   KENNETH A. STEEL,  JR. Mr.  Steel has been a Director  of the  Company  since
September  1996.  Since  August  1978,  Mr.  Steel has been the  Executive  Vice
President of K.A.  Steel  Chemicals,  Inc., a privately  held Chicago,  Illinois
based  chemical  company in which Mr. Steel holds primary  responsibilities  for
sales and marketing and operations  management.  Since October 1995, he has also
been a Director of Organic Food Products, Inc. (formerly Garden Valley Naturals,
Inc.),  a privately held company  engaged in  processing,  packing and marketing
natural foods.

   The Bylaws  provide for a Board of  Directors of three to nine  members.  All
current  directors of the Company  hold office until the next annual  meeting of
stockholders  and until their  successors  have been duly elected and qualified.
Commencing with the 1997 annual meeting of stockholders,  the Board of Directors
will be  classified  into three  classes  with each class  holding  office for a
three-year period. To provide for the expiration of the term of one of the three
classes of  directors  each year,  the initial  term for one class of  directors
shall be one year,  the initial term for the second class of directors  shall be
two years and the initial term for the third class of  directors  shall be three
years. Thereafter, the terms of all directors shall be three years.

   Directors  are  reimbursed  for  reasonable  expenses  incurred in  attending
meetings.  Each non-employee director (Messrs. Lyons and Steel) has been granted
options for 20,000 shares of Common Stock exercisable at $8 per share. Effective
June  1,  1996,   the  Company   entered  into  a  three-year   consulting   and
noncompetition  agreement with Harvey A. Belfer, a director of the Company.  The
agreement  provides  that the  Company  will pay Mr.  Belfer  an  annual  fee of
$12,000,  increasing  10% each year,  plus  expenses in exchange for  consulting
services in connection with the manufacturing  operations,  marketing, and sales
activities and business  affairs of the Company.  In connection  therewith,  Mr.
Belfer received five-year warrants exercisable for 40,000 shares of Common Stock
at an exercise price of $3.50 per share, vesting in stages through May 31, 1999.
On June 1, 1996, Mr. Belfer also received  options to purchase  30,000 shares of
Common Stock at an exercise  price of $3.50 per share under the Company's  Stock
Option Plan.

   Executive officers are elected annually by and serve at the discretion of the
Board of Directors.

<TABLE>

EXECUTIVE COMPENSATION

   The  following  table  provides   certain  summary   information   concerning
compensation paid to the Company's Chief Executive Officer. No executive officer
who was serving as an executive  officer on May 31, 1996 had an aggregate salary
and bonus exceeding $100,000 for the fiscal year ended May 31, 1996.

<CAPTION>

                                        SUMMARY COMPENSATION TABLE

                                                                             LONG-TERM
                                                                            COMPENSATION
                                                                            -------------
                                           ANNUAL COMPENSATION                  AWARDS
                                  ----------------------------------------  -------------
                                                                              SECURITIES
                                                              OTHER ANNUAL    UNDERLYING          ALL OTHER
                                                              COMPENSATION   OPTIONS/SARS       COMPENSATION
NAME AND PRINCIPAL POSITION        YEAR  SALARY($)   BONUS($)      ($)            (#)                 ($)
- ---------------------------        ----  ---------   -------  ------------   ------------       -------------
<S>                                <C>    <C>           <C>    <C>                 <C>            <C>      
Hooman Nikzad               
 Chief Executive Officer(1).....   1996   $41,870       --     $1,650(2)           0              $2,691(3)

<FN>
- ----------
(1) Mr. Nikzad also received member draws as a member of Houston, predecessor to
    the Company. See "Certain Transactions."
(2) Represents an automobile lease payment paid by the Company in lieu of salary
    payments.
(3) Represents Company payment of cellular telephone charges.
</FN>
</TABLE>

   The executive officer named in the Summary  Compensation Table did not own or
receive any stock options or SARs during the fiscal year ended May 31, 1996. See
"Description  of Capital  Stock --  Warrants"  and  "Certain  Transactions"  for
information regarding warrants received by Mr. Nikzad during

                                       33
<PAGE>

fiscal 1996. On June 1, 1996,  the Company  adopted a plan pursuant to which the
Company  may grant  options to purchase  Common  Stock to  employees,  including
officers,  and others. On June 1, 1996, the Company granted Mr. Nikzad an option
to purchase  30,000  shares at $3.50 per share under the Stock Option Plan.  See
"Management -- Stock Option Plan."

STOCK OPTION PLAN

   The Company's 1996 Stock Option Plan (the "Stock Option Plan") was adopted by
the  Board  of  Directors  in June  1996 and  approved  by the  stockholders  in
September 1996 to grant options to purchase  300,000 shares of Common stock.  As
of August 15,  1996,  options to purchase  229,000  shares of Common  Stock were
outstanding.  The Stock  Option Plan  provides  for the granting to employees of
either  "incentive  stock  options"  within the  meaning  of Section  422 of the
Internal  Revenue Code of 1986, as amended (the "Code"),  or nonqualified  stock
options to any  individual,  including  employees  and directors of the Company.
Incentive  stock options may be granted only to employees,  including  officers.
The exercise  price of incentive  stock  options  granted under the Stock Option
Plan must be the fair market value of the Common Stock on the date of grant. The
exercise  price  of any  incentive  stock  option  granted  to an  optionee  who
beneficially  owns more than 10% (a "10% Holder") of the Company's  voting stock
must be at least 110% of the fair market value of the  underlying  shares on the
date of grant.  The Stock  Option Plan expires in 2006 with respect to incentive
stock options.

   Under the Stock Option Plan, nonqualified stock options may be granted to any
individual,  including  employees  and  directors  and  consultants  who are not
employees of the Company.  The exercise price of nonqualified  stock options may
be any amount  determined in good faith by the Board of Directors or a committee
appointed  by the Board.  The Company has no plans to grant  nonqualified  stock
options  at an  exercise  price  of less  than  the  fair  market  value  of the
underlying shares on the date of grant.

   The Stock  Option  Plan is  administered  by the full Board of  Directors  or
compensation  committee  of  the  Board  (the  "Compensation  Committee")  which
determines the terms of options  granted under the Stock Option Plan,  including
the  exercise  price and the number of shares  subject to the option.  The Stock
Option Plan provides the Compensation Committee with the discretion to determine
when options granted thereunder shall become  exercisable.  Most options granted
under the Stock Option Plan become  exercisable over a period of three years and
have a term of five years. No option may be exercised more than 10 years (or, in
the case of an incentive  option granted to a 10% Holder,  more than five years)
after its grant  date.  Options  granted  under  the Stock  Option  Plan are not
transferable by the optionee after the date of its grant.  Options granted under
the Stock Option Plan are not transferable by the optionee other than by will or
the laws of descent and distribution,  and each option is exercisable during the
lifetime  of  the  optionee  only  by  the  optionee,   his  guardian  or  legal
representative.  Incentive stock options held by employees of the Company may be
exercised by the  participant  only while  employed by the Company or within one
year  following  termination  resulting  from death or permanent  disability  or
within three months after termination for any reason other than cause,  death or
permanent disability, or on or before the date the participant's employment with
the  Company is  terminated,  if for  cause.  Options  to  non-employees  may be
exercised within such time period as the Compensation  Committee  determines but
no later  than 10 years from the date of grant,  two years  after  cessation  of
services to the Company for any reason other than death,  permanent  disability,
retirement or cause, three years after cessation of services by reason of death,
permanent  disability or cause,  or the date of cessation of services for cause.
Upon the occurrence of a change in control of the Company,  100% of all unvested
options that had been outstanding for at least six months will vest.

                                       34
<PAGE>

EMPLOYMENT   CONTRACTS,   TERMINATION  OF  EMPLOYMENT,   AND   CHANGE-IN-CONTROL
ARRANGEMENTS

   Hooman Nikzad entered into a three-year employment agreement with the Company
as of June 1,  1996,  pursuant  to which  he was  employed  as  Chief  Executive
Officer. Under the agreement, Mr. Nikzad is entitled to an annual base salary of
$85,000,  increasing by 10% annually  commencing May 31, 1997. Unless terminated
without cause, Mr. Nikzad is entitled to a lump sum payment equal to the greater
of the base salary due for the remainder of the term of the employment agreement
or 12 months' base salary,  and continuation of coverage under medical plans for
up to 12  months.  Mr.  Nikzad is  entitled  to certain  incentive  compensation
payments,  if any, made for the year of  termination of his employment for death
or disability.  If the  employment is terminated  within 12 months after certain
changes in control of the Company,  Mr. Nikzad is entitled to a lump sum payment
(in lieu of the payment  referred to in the second  preceding  sentence)  not to
exceed  2.99  times the base  amount  defined in  Section  280G of the  Internal
Revenue Code of 1986, as amended, continuation of medical coverage for 12 months
and  other  benefits  in  effect  at that  time.  The  agreement  also  contains
confidentiality   and   non-competition   covenants.   In  connection  with  his
employment,  Mr.  Nikzad  received  options for 30,000  shares of the  Company's
Common Stock on June 1, 1996, exercisable at $3.50 and vesting in equal parts on
the first three anniversaries of the grant date.

   The Company has similar agreements with Messrs. Todd Belfer,  Djahandideh and
Denton employing them in their  capacities as officers with the Company,  except
that their annual salary is $50,000, $85,000 and $65,000,  respectively, and the
numbers of options received were 30,000, 30,000 and 10,000,  respectively.  Todd
Belfer's salary is $50,000 per annum, increasing 10% annually commencing May 31,
1997,  and Mr.  Denton's  salary is  $65,000  per annum,  increasing  to $70,000
January 1, 1997 and to $75,000  January 1, 1998,  with provisions for Mr. Denton
to receive annual bonuses of $10,000,  $15,000 and $20,000 for fiscal years 1997
through 1999, respectively,  should the Company achieve net sales targets during
such  years.  In  connection  with his  employment,  Mr.  Denton  also  received
five-year  warrants  exercisable for 60,000 and 30,000 shares of Common Stock at
an exercise  price of $.50 and $1.00,  respectively,  vesting in stages  through
December 31, 1998.

                                       35
<PAGE>

                              CERTAIN TRANSACTIONS

   The Company's  predecessor,  Houston,  was founded by Hooman Nikzad,  Todd P.
Belfer,  Fred Djahandideh,  Harvey A. Belfer and Marvin D. Brody.  Houston was a
party to an agreement  dated December 12, 1995 pursuant to which Marvin D. Brody
and Nancy P. Brody transferred their Houston  membership  interests to Harvey A.
Belfer, Todd P. Belfer, Hooman Nikzad and Fradjollah  Djahandideh.  Houston paid
approximately  $4,100 in attorneys' fees relating to the agreement and agreed to
indemnify the sellers against all liabilities arising from Houston's operations.


   On May 31, 1996, Messrs.  Nikzad, Todd Belfer,  Djahandideh and Harvey Belfer
completed a private  placement of portions of their membership  interests in the
Company's predecessor,  Houston, selling approximately 16.6% of their interests.
The Company did not receive any proceeds from the sale.  On that same date,  all
members  converted  their  interests into shares of the Company's  Common Stock.
Private  placement  costs  associated  with the  transactions  of  approximately
$70,000 were paid by the  Company.  In  connection  with the  transactions,  the
Company  also issued  warrants to purchase  an  aggregate  of 118,449  shares of
Common  Stock to the  underwriter  of a portion  of the  private  placement  and
entities  associated  with an attorney  involved in the private  placement and a
director of the Company who subsequently  resigned.  See "Description of Capital
Stock -- Warrants."

   Houston made limited liability company  distribution  payments to its members
in fiscal 1995 and fiscal  1996,  including  the  following  payments to current
executive officers and directors:  Mr. Nikzad,  $125,256 in 1995 and $220,313 in
1996; Mr. Todd Belfer,  $125,256 in 1995 and $220,313 in 1996; Mr.  Djahandideh,
$224,339 in 1995 and $495,313 in 1996; and Mr. Harvey  Belfer,  $112,966 in 1995
and $264,063 in 1996. The Company succeeded to Houston's  business effective May
31, 1996 and no additional  distributions  will be made. See "Limited  Liability
Company  Distributions" and Consolidated  Statements of Shareholders' Equity and
Notes to Consolidated Financial Statements.

   The Company  currently leases 19 of its employees through an employee leasing
company, Employee Solutions, Inc. ("ESI"), of which Harvey Belfer was co-founder
and Chief  Executive  Officer,  and is a  Director,  and for which  Todd  Belfer
previously  served as Director  and Vice  President  of  Marketing  and Investor
Relations.  For the  years  ended  May 31,  1996  and  1995,  Houston  paid  ESI
approximately  $923,000 and  $506,000,  respectively,  for employee  leasing and
related expenses.

   From February 1994 to October 1994,  Houston retained the services of Propay,
Inc., an employee leasing firm ("Propay"),  which Hooman Nikzad co-founded.  For
the fiscal  year ended May 31,  1995,  the  Company  paid  Propay  approximately
$329,000 for such employee leasing services.

   During  fiscal  1995,  Houston  paid a total  of  approximately  $353,600  in
consulting  and  other  fees to Pure  Source  Ltd.,  a  British  Virgin  Islands
corporation ("Pure Source") which provided  marketing,  purchasing,  promotional
and other international advertising services and assisted in locating sources of
raw materials. On December 31, 1995, the consulting agreement was terminated. No
fees were paid to Pure Source in fiscal 1996. All of the members of Houston, the
predecessor  to the  Company,  had  beneficial  interests  in  Pure  Source  and
benefitted  from the  payment  of such fees.  Current  directors  and  executive
officers of the Company held the following  ownership  interests in Pure Source:
Mr. Todd  Belfer,  15%;  Mr.  Nikzad,  15%;  Mr.  Harvey  Belfer,  17.5% and Mr.
Djahandideh, 35%.

   In February  1996,  the Company  purchased  all of the  outstanding  stock of
Belnik Investment Group, Inc., an Arizona  corporation doing business as Freedom
Wholesalers, Inc. ("Freedom"), from Messrs. Nikzad and Todd Belfer. The purchase
price  consisted of $1,000 plus  warrants  issued to each of Messrs.  Nikzad and
Todd Belfer to purchase 10,500 shares of the Company's Common Stock  exercisable
at $1.00 per share and vesting in three  equal  annual  installments  commencing
December 31, 1996. Prior to acquiring Freedom, the Company had been distributing
certain of its  products  through  Freedom as well as  providing  office  space,
telephone  facilities,  other business  services,  and management to Freedom for
which  Freedom  reimbursed  the Company  $190,291 in fiscal 1995 and $437,310 in
fiscal 1996. See "Business -- Products" and "-- Freedom Products." For financial
reporting  purposes,  the  operations  of  Freedom  are  consolidated,  and  all
intercompany  balances  and  transactions  are  eliminated.  See  Note  2 to the
Consolidated Financial Statements.

                                       36
<PAGE>

   On March 6, 1996,  the  Company  borrowed  $300,000  from Belfer Labs LLC, an
affiliated company formed by Todd Belfer, President and Director of the Company,
and Harvey  Belfer,  father of Todd Belfer and  consultant  and  Director of the
Company.  The Belfer Labs Note accrues interest at the rate of 12% per annum and
is payable March 6, 1997. The proceeds of the Belfer Labs Note were  distributed
to the members of Houston for,  among other  things,  the members' tax liability
which  resulted  from the  profitable  operations  of the  Company  prior to the
Company's  conversion  to a  corporation.  On July 23,  1996,  the Company  paid
$100,000 in principal on the note plus accrued  interest of $14,100.  Management
anticipates repaying the remaining balance payable on the note with the proceeds
from this Offering.

   The  Company  has no plans to enter  into any  additional  transactions  with
officers,  directors or stockholders of the Company.  In the future, the Company
will not engage in any additional  transactions with its officers,  directors or
5%  stockholders  or their  affiliates  unless the  transaction is approved by a
majority of the disinterested directors of the Company after full disclosure and
will be on terms no less  favorable to the Company than would be available  from
an unaffiliated third party.

                                       37
<PAGE>

<TABLE>

                             PRINCIPAL STOCKHOLDERS

   The following table sets forth certain  information  regarding the beneficial
ownership of the Company's Common Stock as of September 10, 1996 and as adjusted
to reflect the sale of the shares of Common Stock  offered  hereby,  by (i) each
person or entity  known to the Company to own  beneficially  more than 5% of the
outstanding  shares of Common Stock,  (ii) each of the  Company's  directors and
(iii) all directors and executive officers of the Company as a group.

<CAPTION>
                                                                                                 SHARES BENEFICIALLY OWNED(1)
                                                                                         -------------------------------------------
                                                                                                       PERCENT PRIOR   PERCENT AFTER
       IDENTITY OF STOCKHOLDER OR GROUP(2)                                                 NUMBER       TO OFFERING       OFFERING
       -----------------------------------                                                 ------       -----------       --------
<S>                                                                                      <C>               <C>             <C>
Hooman Nikzad .................................................................            412,907         13.8%           10.4%
Todd P. Belfer ................................................................            469,156(3)      15.6            10.9
Fred Djahandideh ..............................................................            994,359(4)      33.1            23.1
Harvey Belfer .................................................................            600,203(5)      20.0            14.0
Allan Richard Lyons ...........................................................             65,000(6)       2.2             1.5
Kenneth A. Steel, Jr ..........................................................             20,000(7)       0.7             0.5
Storie Partners, L.P.(8) ......................................................            180,000          6.0             4.2
All directors and executive officers as a group                                                                        
 (seven persons)(3)(4)(5)(6)(9) ...............................................          2,571,625         84.3            59.1
                                                                                                                    
<FN>
- ----------
(1) Beneficial  ownership  is  determined  in  accordance  with the rules of the
    Securities and Exchange  Commission  ("SEC" or  "Commission")  and generally
    includes  voting  or  investment  power  with  respect  to  securities.   In
    accordance  with SEC rules,  shares which may be acquired  upon  exercise of
    stock options or warrants  which are currently  exercisable  or which become
    exercisable within 60 days of the date of the table are deemed  beneficially
    owned by the  optionee.  Except as  indicated  by  footnote,  and subject to
    community  property laws where applicable,  the persons or entities named in
    the table above have sole voting and  investment  power with  respect to all
    shares of Common Stock shown as beneficially owned by them.
(2) Except as otherwise  noted,  mailing address is 1719 West University  Drive,
    Suite 187, Tempe, Arizona 85281.
(3) Represents shares owned by T.P.B. Investments Limited Partnership,  of which
    Todd Belfer is general partner,  with beneficial  interests accruing to Todd
    Belfer and his sister, Beth Robin Belfer.
(4) Includes  250,000  shares  held  by  Mr.  Djahandideh's  daughter,   Daniela
    Djahandideh, for which Mr. Djahandideh holds power of attorney.
(5) Represents shares owned by To Be Limited Partnership, of which Harvey Belfer
    is general partner,  with beneficial  interests  accruing to Harvey Belfer's
    son, Todd Belfer, and Harvey Belfer's daughter, Beth Robin Belfer.
(6) Represents 45,000 shares held by two venture capital firms controlled by Mr.
    Lyons and 20,000  shares Mr. Lyons has a right to acquire  upon  exercise of
    stock options.
(7) Represents  shares Mr. Steel has a right to acquire  upon  exercise of stock
    options.
(8) Mailing address is 1 Bush Street, No. 1350, San Francisco, California 94104.
(9) Includes an  aggregate  of 50,000  shares  issuable  upon  exercise of stock
    options and warrants.

</FN>
</TABLE>

                                       38
<PAGE>

                         DESCRIPTION OF CAPITAL STOCK

   The authorized  capital stock of the Company  consists of 8,000,000 shares of
Common Stock,  $.001 par value per share, and 100,000 shares of Preferred Stock,
$.01 par value per share  (the  "Preferred  Stock"),  issuable  in  series.  The
following summary of certain  provisions of the Company's capital stock does not
purport to be complete and is subject to, and  qualified in its entirety by, the
provisions of the Company's Certificate of Incorporation (the "Certificate") and
Bylaws  which are  included as exhibits to the  Registration  Statement of which
this Prospectus is a part, and by the provisions of applicable law.

COMMON STOCK

   Immediately  prior to the  Offering,  there were  3,000,000  shares of Common
Stock outstanding  which were held of record by 39 stockholders.  The holders of
Common  Stock are entitled to one vote per share on all matters to be voted upon
by the  stockholders.  Stockholders are not entitled to cumulate their votes for
the election of directors.  Subject to preferences that may be applicable to any
outstanding  shares of Preferred Stock, the holders of Common Stock are entitled
to receive such dividends pro rata, if any, as may be declared from time to time
by the Board of Directors out of funds legally  available for that purpose.  See
"Dividend  Policy." In the event of a liquidation,  dissolution or winding up of
the  Company,  the holders of Common Stock are entitled to share pro rata in all
assets  remaining  after payment of liabilities,  subject to prior  distribution
rights of Preferred  Stock,  if any, then  outstanding.  The Common Stock has no
preemptive  or  conversion  rights or other  subscription  rights.  There are no
redemption  or sinking  fund  provisions  applicable  to the Common  Stock.  All
outstanding  shares of Common  Stock are fully paid and  nonassessable,  and the
shares of Common Stock to be issued upon  completion  of this  Offering  will be
fully paid and nonassessable.

PREFERRED STOCK

   The Company is authorized to issue 100,000 shares of  undesignated  Preferred
Stock.  The Board of  Directors  has the  authority  to issue  the  undesignated
Preferred  Stock in one or more series and to determine the powers,  preferences
and rights and the  qualifications,  limitations or  restrictions  granted to or
imposed upon any wholly unissued  series of undesignated  Preferred Stock and to
fix the number of shares  constituting  any series and the  designation  of such
series,  without  any  further  vote or  action by the  stockholders.  Shares of
Preferred  Stock  so  designated  may  have  voting,   conversion,   liquidation
preference,  redemption,  sinking  fund  provisions  and other  rights which are
superior to those of the Common Stock.  The issuance of Preferred Stock may have
the  effect of  delaying,  deferring  or  preventing  a change in control of the
Company without further action by the stockholders,  may discourage bids for the
Common  Stock at a premium  over the market  price of the  Common  Stock and may
adversely  affect  the market  price of and the  voting and other  rights of the
holders of Common  Stock.  At  present,  the  Company  has no plans to issue any
shares of the Preferred Stock.

WARRANTS

   As of August 15,  1996,  the  Company  has  outstanding  warrants to purchase
464,421  shares of its Common  Stock,  of which  267,656  were  exercisable,  as
further  described  below.  Each  warrant  expires  in either  May or June 2001,
respectively,  and contains  provisions for the adjustment of the exercise price
and the aggregate  number of shares  issuable upon exercise of the warrant under
certain circumstances, including stock dividends, stock splits, reorganizations,
reclassifications  and consolidations,  and in certain cases, for dilutive sales
of Common Stock below the then existing  exercise  price.  Certain  warrants are
entitled  to  registration   rights.   See  "Description  of  Capital  Stock  --
Registration Rights."

   Of the warrants referred to in the preceding paragraph,  warrants to purchase
60,000 shares are exercisable at $.50 per share, vesting in stages through 1999.
Warrants to purchase  51,000 shares are exercisable at $1.00 per share, of which
10,000  warrants  are  vested,  and the  balance  vest in stages  through  1998.
Warrants to purchase 192,656 shares are exercisable at $3.50 per share, of which
107,656 are vested  currently,  and the  balance  vest in stages  through  1999.
Warrants to purchase  75,000 shares are  exercisable at each of $5.00 and $10.00
per share, respectively, all of which are vested currently. Warrants to purchase
10,765  shares  are  exercisable  at the price at which  shares are sold in this
Offering, all of which warrants are vested.

                                       39
<PAGE>

CERTAIN ANTI-TAKEOVER PROVISIONS

   Stockholders'  rights and related matters are governed by Delaware  corporate
law, the  Certificate  and Bylaws.  Certain  provisions of the  Certificate  and
Bylaws that are summarized below may affect potential  changes in control of the
Company.  The  cumulative  effect  of  these  provisions  may be to make it more
difficult to acquire and exercise  control of the Company and to make changes in
management.

   The affirmative vote of at least two-thirds of the shares entitled to vote is
required for a merger or a  consolidation  with, or a sale by the Company of all
or substantially all of its assets to, any person,  firm or corporation,  or any
group thereof,  which owns,  directly or indirectly,  5% or more of any class of
voting securities of the Company, exclusive of any person holding 10% or more at
May 31, 1996 (an  "Interested  Person").  In  addition,  two-thirds  approval is
required with respect to other  transactions  involving any  Interested  Person,
including  the  purchase  by the  Company or any of its  subsidiaries  of all or
substantially  all of the assets or stock of an Interested  Person and any other
transaction with an Interested Person that requires  stockholder  approval under
Delaware  law.  The  two-thirds  voting  requirement  is  not  applicable  to  a
transaction  that is  approved  by the Board of  Directors  if a majority of the
members  of the Board of  Directors  voting to  approve  such  transaction  were
elected prior to the date on which the other party became an  Interested  Person
(the "Continuing  Directors") or whose initial election as a director succeeds a
Continuing  Director  or  fills a newly  created  directorship  approved  by the
Continuing Directors.

   Commencing with the 1997 annual meeting of  stockholders,  each director will
serve for a three-year term and approximately one-third of the directors will be
elected  annually.  Candidates for election of directors shall be nominated only
by the Board of Directors or by a stockholder  who gives prior written notice to
the Company,  generally not less than 60 nor more than 90 days before the annual
meeting. The Company may have three to nine directors as determined from time to
time by the Board, which currently consists of six members.  Between stockholder
meetings, the Board may appoint new directors to fill vacancies or newly created
directorships.  The  Certificate  does not  provide  for  cumulative  voting  at
stockholder  meetings for election of directors.  Stockholders  controlling more
than  50% of the  outstanding  Common  Stock  can  elect  the  entire  Board  of
Directors,  while  stockholders  controlling  less  than 50% of the  outstanding
Common Stock may not be able to elect any  directors.  A director may be removed
from office only for cause by the affirmative vote of a majority of the combined
voting power of the then outstanding  shares of stock entitled to vote generally
in the election of directors.

   The Certificate  further provides that stockholder  action must be taken at a
meeting of  stockholders  and may not be effected  by any consent in writing.  A
special meeting of stockholders may be called only by the Chairman of the Board,
the Chief  Executive  Officer,  a majority of the whole Board of Directors or by
the  holders of at least 25% of the Common  Stock.  If a  stockholder  wishes to
propose  an agenda  item for  consideration  at a  meeting  he must give a brief
description  of each item and written notice to the Company not less than 60 nor
more than 90 days prior to the meeting or such other period of time necessary to
comply with applicable  federal proxy  solicitation  rules or other regulations.
Stockholders  may need to present  their  proposals or director  nominations  in
advance of the time they  receive  notice of the meeting  because the  Company's
Bylaws  provide  that notice of a  stockholders'  meeting must be given not less
than 10 or more than 60 days prior to the meeting date.


   The  Certificate  provides  further  that  the  foregoing  provisions  of the
Certificate and Bylaws may be amended or repealed only with the affirmative vote
of at least  two-thirds of the shares entitled to vote,  unless the amendment is
recommended for stockholder approval by a majority of the Continuing  Directors.
These provisions  exceed the usual majority vote requirement of Delaware law and
are intended to prevent the holders of less than  two-thirds of the voting power
from  circumventing  the foregoing  terms by amending the Certificate or Bylaws.
These  provisions,  however,  enable the holders of more than  one-third  of the
voting power to prevent  amendments  to the  Certificate  or Bylaws even if they
were favored by the holders of a majority of the voting power.

   The  effect  of  these   provisions   may  be  to  make  more  difficult  the
accomplishment  of a merger  or other  takeover  or  change  in  control  of the
Company.  To the extent that these  provisions have this effect,  removal of the
Company's incumbent Board of Directors and management may be rendered more

                                       40
<PAGE>

difficult.  Furthermore,  these  provisions  may  make  it  more  difficult  for
stockholders  to  participate in a tender or exchange offer for Common Stock and
in so doing may diminish the market value of the Common Stock.

PERSONAL LIABILITY OF DIRECTORS

   Delaware  law  authorizes  a Delaware  corporation  to eliminate or limit the
personal  liability of a director to the  corporation and its  stockholders  for
monetary  damages  for breach of certain  fiduciary  duties as a  director.  The
Company believes that such a provision is beneficial in attracting and retaining
qualified  directors,  and  accordingly,  the  Certificate  includes a provision
eliminating liability for monetary damages for any breach of fiduciary duty as a
director, except (i) for any breach of the duty of loyalty to the Company or its
stockholders;  (ii) for acts or  omissions  not in good  faith or which  involve
intentional  misconduct or a knowing violation of law; (iii) for any transaction
from  which the  director  derived an  improper  personal  benefit;  or (iv) for
unlawful  payments of dividends or unlawful  stock  repurchase or redemptions as
provided in Section 174 of the Delaware General  Corporation Law.  Directors are
not insulated  from  liability for breach of their duty of loyalty or for claims
arising  under the federal  securities  laws.  The  foregoing  provisions of the
Certificate may reduce the likelihood of derivative litigation against directors
for  breaches  of  their  fiduciary  duties,  even  though  such an  action,  if
successful,  might otherwise have  benefitted the Company and its  stockholders.
Furthermore,  the Company has entered into indemnity  agreements with all of its
directors and officers for the  indemnification  of and advancing of expenses to
such persons to the fullest  extent  permitted  by law.  The Company  intends to
execute such indemnity  agreements with its future  officers and directors.  The
Company is in the process of  obtaining  comprehensive  directors  and  officers
liability insurance coverage, and anticipates obtaining an insurance policy with
an  aggregate  policy limit of not less than  $5,000,000  for the benefit of its
officers and  directors  insuring  such  persons  against  certain  liabilities,
including  liabilities  under the  securities  laws, no later than the effective
date of this Offering.  Insofar as indemnification for liabilities arising under
the Securities Act of 1933, as  amended  (the "Securities Act") may be permitted
to directors,  officers and controlling  persons of the Company  pursuant to the
foregoing  provisions,  or  otherwise,  the Company has been advised that in the
opinion of the SEC such indemnification is against public policy as expressed in
the Securities Act and is, therefore, unenforceable.

DELAWARE LAW

   The  Company is  subject to the  provisions  of Section  203 of the  Delaware
General  Corporation  Law. In general,  this statute  prohibits a publicly  held
Delaware  corporation  from  engaging  in  a  "business   combination"  with  an
"interested  stockholder"  for a period of three  years  after the date that the
person became an interested  stockholder  unless (with certain  exceptions)  the
business combination or the transaction in which the person became an interested
stockholder  is  approved  in  a  prescribed  manner.   Generally,  a  "business
combination"  includes  a  merger,  asset or stock  sale,  or other  transaction
resulting in a financial benefit to the stockholder.  Generally,  an "interested
stockholder" is a person who, together with affiliates and associates,  owns (or
within  three  years  prior,  did own) 15% or more of the  corporation's  voting
stock.

REGISTRATION RIGHTS

   Holders of 498,375  shares of Common Stock and holders of warrants to acquire
257,656  shares of Common Stock have the right to demand  registration  of up to
50% of such  shares  commencing  September  1,  1997 and will  have the right to
receive  notice of proposed  registrations  of  securities by the Company and to
cause  the  Company  to  include  all  or a  portion  of  such  shares  in  such
registrations,  provided,  among other conditions,  that the underwriters of any
such  offering  shall have the right to limit the number of shares  included  in
such registration.  Holders of applicable  registration  rights relating to this
Offering have been notified that their respective shares will not be included in
this  Offering.  The Company is obligated  to pay the offering  expenses of each
such  offering,  except  for the  selling  stockholders'  pro  rata  portion  of
underwriting discounts and commissions.

                                       41
<PAGE>

   Prior to this Offering,  there has been no market for the Common Stock and no
precise  prediction  can be made of the effect,  if any,  that  market  sales of
shares or the  availability  of shares  for sale will have on the  market  price
prevailing from time to time. Nevertheless,  sales of substantial amounts of the
Common  Stock in the public  market could  adversely  affect  prevailing  market
prices.

TRANSFER AGENT AND REGISTRAR


   The Company has appointed Corporate Stock Transfer, Inc., Denver, Colorado as
the transfer agent and registrar for the Company's Common Stock.

                                       42
<PAGE>

                         SHARES ELIGIBLE FOR FUTURE SALE

   Upon completion of this Offering,  the Company will have 4,300,000  shares of
Common Stock outstanding.  Of these shares, 1,300,000 of the shares sold in this
Offering (plus any additional shares sold upon the exercise of the Underwriters'
Over-allotment  Option) will be freely  tradable under the Securities Act except
for shares  purchased by  "affiliates"  of the Company within the meaning of the
rules and regulations under the Securities Act.

   The remaining 3,000,000 outstanding shares (the "Restricted  Shares"),  which
were  issued  by the  Company  on May 31,  1996 in  reliance  upon the  "private
placement"  exemption  provided by Section 4(2) of the  Securities  Act, will be
deemed restricted securities within the meaning of Rule 144 under the Securities
Act.  Restricted  Shares may not be sold  unless they are  registered  under the
Securities   Act  or  are  sold  pursuant  to  an  applicable   exemption   from
registration, including an exemption under Rule 144.

   In general,  under Rule 144 of the  Securities  Act as  currently  in effect,
beginning 90 days after the date of this Prospectus,  a person (or persons whose
shares are aggregated) who has beneficially owned "restricted securities" for at
least two years  (one year under  currently  proposed  amendments  to Rule 144),
including a person who may be deemed an affiliate of the Company, is entitled to
sell within any three-month  period a number of shares of Common Stock that does
not exceed the greater of 1% of the then  outstanding  shares of Common Stock of
the Company (43,000 shares after giving effect to this Offering) and the average
weekly trading volume of the Common Stock on the Nasdaq  National  Market during
the four  calendar  weeks  preceding  such  sale.  Sales  under  Rule 144 of the
Securities Act are subject to certain  restrictions  relating to manner of sale,
notice and the availability of current public  information about the Company.  A
person who is not an  affiliate  of the  Company at any time  during the 90 days
preceding a sale, and who has beneficially owned shares for at least three years
(two years under currently  proposed  amendments to Rule 144), would be entitled
to sell such shares  without  regard to the volume  limitations,  manner of sale
provisions or notice or other  requirements  of Rule 144 of the Securities  Act.
However,  the  transfer  agent may require an opinion of counsel that a proposed
sale of shares comes within the terms of Rule 144 of the Securities Act prior to
effecting a transfer of such shares.

   The Company and its officers and directors  holding an aggregate of 2,521,625
shares of Common Stock have entered into lockup agreements with the Underwriters
pursuant to which such stockholders have agreed not to sell or otherwise dispose
of any  shares of Common  Stock for a period of 180 days  after the date of this
Prospectus   without  the  prior  written  consent  of  the  Underwriters.   See
"Underwriting."

   After the  expiration of the lockup  agreements  with the  Underwriters,  the
Company  expects  to  file a  Registration  Statement  on  Form  S-8  under  the
Securities  Act to  register  all of the  shares of Common  Stock  reserved  for
issuance under the Company's 1996 Stock Option Plan. After the effective date of
such Registration  Statement,  shares purchased upon exercise of options granted
pursuant to the Stock Option Plan generally would be available for resale in the
public  market.  As of August 15, 1996,  options to purchase  229,000  shares of
Common  Stock were  outstanding,  none of which were  exercisable.  To date,  no
options have been exercised.

   Following  completion of this  offering,  holders of 498,375 shares of Common
Stock and the holders of warrants to acquire 257,656 shares of Common Stock have
the right,  under  certain  conditions,  to cause the Company to  register  such
shares  under  the   Securities   Act  and  to  participate  in  future  Company
registrations. See "Description of Capital Stock -- Registration Rights."

   Prior to this Offering, there has been no market for the Common Stock, and no
precise  prediction  can be made of the effect,  if any,  that  market  sales of
shares or the  availability  of shares  for sale will have on the  market  price
prevailing from time to time. Nevertheless,  sales of substantial amounts of the
Common  Stock in the public  market could  adversely  affect  prevailing  market
prices and limit the Company's ability to raise additional capital.

                                       43
<PAGE>

                                 UNDERWRITING

   The Underwriters named below have severally agreed,  subject to the terms and
conditions  of the  Underwriting  Agreement,  to  purchase  from the Company the
number of shares set forth opposite their names.

                                                                    NUMBER OF
                              UNDERWRITER                            SHARES
                              -----------                            ------
          Sentra Securities Corporation.........................
          Spelman & Co., Inc. ..................................













                                                                   ---------
               TOTAL ...........................................   1,300,000
                                                                   =========

   The Company is  obligated  to sell,  and the  Underwriters  are  obligated to
purchase all of the shares of Common Stock offered  hereby if any are purchased.
The  Company  has been  advised  by the  Representatives  that the  Underwriters
propose to offer the Common Stock  purchased  by them  directly to the public at
the public  offering price set forth on the cover page of this Prospectus and to
certain  dealers at a price that  represents  a concession  of $                
per  share.  The  Underwriters  may  allow,  and such  dealers  may  reallow,  a
concession  within the  discretion  of the  Representatives.  After the  initial
public  offering of the Common Stock,  the offering  price and the selling terms
may be changed by the Underwriters.

   The Company has granted an option to the  Underwriters  to  purchase,  in the
aggregate,  up to  195,000  additional  shares of Common  Stock.  The  option is
exercisable for 45 days from the date of this Prospectus at an initial  offering
price,  less underwriting  discounts and commissions,  as set forth on the cover
page of this  Prospectus.  The option may only be  exercised  for the purpose of
covering  over-allotments  incurred  in the sale of the  shares of Common  Stock
offered hereby.

   The  Underwriters  will  purchase  the Common Stock  (including  Common Stock
subject to the  Over-allotment  Option) from the Company at a price of $6.30 per
share. In addition,  the Company has agreed to pay to the  Representatives  a 3%
nonaccountable  expense allowance on the aggregate initial public offering price
of the shares of Common Stock,  including  shares subject to the  Over-allotment
Option,  of which $25,000 has been paid. The Company has agreed to indemnify the
Underwriters  against  certain  liabilities,  including  liabilities  under  the
Securities  Act,  or to  contribute  to  payments  that any  Underwriter  may be
required to make in respect thereof.

   The  Company  has  agreed  to issue  to the  Representatives,  for  aggregate
consideration of $100, the Representatives' Warrant to purchase up to 10% of the
number of shares of Common Stock sold in this  Offering for 120% of the offering
price,  or $8.40 per share.  The number of shares of Common Stock covered by the
Representatives' Warrants and the exercise price are subject to adjustment under
certain

                                       44
<PAGE>

events to prevent dilution. The Representatives' Warrants are exercisable at any
time in the five-year period commencing one year from the effective date of this
Offering.  The Representatives'  Warrants are not transferable for one year from
the date of this Prospectus except (i) to an Underwriter or a partner or officer
of an  Underwriter  or (ii) by will or operation of law.  During the term of the
Representatives' Warrants, the holder thereof is given the opportunity to profit
from a rise in the market  price of the  Company's  securities.  The Company may
find  it  more   difficult  to  raise   additional   equity  capital  while  the
Representatives'   Warrants   are   outstanding.   At  any  time  at  which  the
Representatives' Warrants are likely to be exercised, the Company would probably
be  able  to  obtain   additional   equity  capital  on  more  favorable  terms.
Additionally,  the Company has agreed, beginning one year after the date of this
Prospectus,  on demand of the  holders  of a  majority  of the  Representatives'
Warrants or the Common  Stock  issued or issuable  thereunder,  to register  the
Common Stock underlying the Representatives'  Warrants one time at the Company's
expense.  If the Company files a  registration  statement  relating to an equity
offering  under the  provisions  of the 1933 Act at any time  during  the period
following the date of issuance of the Representatives'  Warrants, the holders of
the  Representatives'  Warrants or underlying  Common Stock will have the right,
subject to certain conditions,  to include in such registration  statements,  at
the Company's expense, all or part of the underlying Common Stock at the request
of the holders.  The registration of securities pursuant to the Representatives'
Warrants may result in substantial  expense to the Company at a time when it may
not be able to afford such expense and may impede future financing.

   The  foregoing  does not purport to be a complete  statement of the terms and
conditions  of the  Underwriting  Agreement,  copies of which are on file at the
offices of the Company, the Representative and the Commission.

   The  Representatives  have  advised  the  Company  that they do not intend to
confirm sales to any account over which they exercise discretionary authority.

   Prior to this  Offering,  there has been no public  market for the  Company's
Common  Stock.  The  initial  public  offering  price for the  Common  Stock was
determined by negotiation among the Company and the  Representatives.  Among the
factors  considered in  determining  the initial  public  offering price was the
history  of and the  prospects  for the  Company  and the  industry  in which it
operates,  the past and present  operating results of the Company and the trends
of such  results,  the future  prospects of the Company,  an  assessment  of the
Company's  management,  the general  condition of the securities  markets at the
time of this  Offering  and the  prices for  similar  securities  of  comparable
companies.

                                  LEGAL MATTERS

   The legality of the shares offered hereby will be passed upon for the Company
by the Company's  general  counsel,  Quarles & Brady,  Phoenix,  Arizona.  Legal
issues  related  to FDA,  FTC and state and local  licensing  matters  are being
passed upon for the Company by Bass & Ullman,  P.C., New York, New York. Certain
legal  matters  in  connection  with the  Offering  will be passed  upon for the
Underwriters by Luce, Forward, Hamilton & Scripps LLP, San Diego, California.

                                     EXPERTS

   The  consolidated  balance  sheet of the  Company as of May 31,  1996 and the
consolidated  statements of income,  shareholders' equity, and cash flows of the
Company for each of the two years in the period  ended May 31, 1996  included in
this Prospectus have been included herein in reliance on the report of Coopers &
Lybrand L.L.P., independent accountants,  given on the authority of that firm as
experts in accounting and auditing.

                             AVAILABLE INFORMATION

   The  Company  has  filed  with  the  Commission,   450  Fifth  Street,  N.W.,
Washington,  D.C.  20549,  a  Registration  Statement  under the  Securities Act
concerning the Common Stock offered by this Prospectus.  Certain portions of the
Registration Statement have not been included in this Prospectus as permitted

                                       45
<PAGE>

by the Commission's regulations.  For further information concerning the Company
and  the  shares  of  Common  Stock  offered  hereby,  reference  is made to the
Registration  Statement and its exhibits,  which may be inspected at the offices
of the Commission,  without charge. Copies of the material contained therein may
be obtained from the Commission upon payment of the prescribed fees.  Statements
contained  in this  Prospectus  as to the  contents  of any  contract  or  other
documents are not necessarily complete; where such contract or other document is
an exhibit to the  Registration  Statement,  each such statement is qualified in
all respects by the  provisions  of such exhibit,  to which  reference is hereby
made for a full statement of the provisions thereof.

   After  completion  of this  Offering,  the  Company  will be  subject  to the
informational  requirements  of the  Securities  Exchange Act of 1934 (the "1934
Act") and, in accordance  therewith,  will file reports,  proxy  statements  and
other information with the Commission.  Such reports, proxy statements and other
information  may be inspected and copied at public  reference  facilities of the
Commission at 450 Fifth Street N.W., Washington, D.C. 20549; and at the regional
offices  maintained by the  Commission at 500 West Madison  Street,  Suite 1400,
Chicago,  Illinois 60661; 7 World Trade Center,  13th Floor,  New York, New York
10048; and 5670 Wilshire  Boulevard,  Los Angeles,  California 90036.  Copies of
such  material  can  be  obtained  from  the  Public  Reference  Section  of the
Commission at 450 Fifth Street N.W., Washington, D.C. 20549 at prescribed rates.
Additionally,  the Commission maintains a Web site that contains reports,  proxy
and information  statements and other  information  regarding  issuers that file
electronically   with   the   Commission;   the   address   of   such   site  is
http://www.sec.gov.

                                       46
<PAGE>

<TABLE>
                        INDEX TO FINANCIAL STATEMENTS

<CAPTION>

                                                                                                 PAGE
                                                                                                 ----
<S>                                                                                              <C>
Report of Independent Accountants ............................................................   F-1
Financial Statements:
     Consolidated Balance Sheets as of May 31, 1996 ..........................................   F-2
     Consolidated Statements of Income for the years ended May 31, 1996 and 1995 .............   F-3
     Consolidated Statements of Shareholders' Equity for the years ended May 31, 1996 and 1995   F-4
     Consolidated Statements of Cash Flows for the years ended May 31, 1996 and 1995 .........   F-5
Notes to Consolidated Financial Statements ...................................................   F-6

</TABLE>

                               47


<PAGE>

                      REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Shareholders
M.D. Labs, Inc.

   We have audited the  accompanying  consolidated  balance sheet of M.D.  Labs,
Inc. and subsidiary as of May 31, 1996, and the related consolidated  statements
of income,  shareholders'  equity,  and cash flows for the two years then ended.
These consolidated  financial statements are the responsibility of the Company's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements based on our audits.

   We  conducted  our audits in  accordance  with  generally  accepted  auditing
standards. Those standards require that we plan and perform the audits to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

   In our  opinion,  the  consolidated  financial  statements  referred to above
present fairly, in all material respects, the consolidated financial position of
M.D. Labs, Inc. and subsidiary as of May 31, 1996, and the consolidated  results
of their  operations  and  their  cash  flows for the two  years  then  ended in
conformity with generally accepted accounting principles.


COOPERS & LYBRAND L.L.P.

Phoenix, Arizona
July 12, 1996


                                      F-1
<PAGE>

<TABLE>

                               M.D. LABS, INC.
                          CONSOLIDATED BALANCE SHEET
                                 MAY 31, 1996
<S>                                                                                                                     <C>        
                                                        ASSETS

Current assets:
     Cash and cash equivalents .............................................................................            $    91,799
     Trade accounts receivable, net of allowance for doubtful accounts of $27,876 ..........................                619,860
     Inventories ...........................................................................................              1,080,406
     Deferred tax asset ....................................................................................                 26,683
     Other current assets ..................................................................................                 46,181
                                                                                                                        -----------
          Total current assets .............................................................................              1,864,929
                                                                                                                        -----------

Property and equipment, net ................................................................................                219,399
Intangible assets ..........................................................................................                520,732
Deferred tax asset .........................................................................................                 59,356
Deposits and other assets ..................................................................................                 27,254
                                                                                                                        -----------
          Total assets .....................................................................................            $ 2,691,670
                                                                                                                        ===========

                                         LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable and accrued expenses ......................................................................            $   213,817
Notes payable ..............................................................................................                460,000
                                                                                                                        -----------
          Total current liabilities ........................................................................                673,817
                                                                                                                        -----------
Shareholders' equity:
     Common stock, $.001 par value; 8,000,000 shares authorized; 3,000,000 shares ..........................                  3,000
       issued and outstanding
     Preferred stock, $.01 par value; 100,000 shares authorized; none outstanding
     Paid-in capital .......................................................................................              2,018,728
     Less: unearned compensation ...........................................................................                 (3,875)
                                                                                                                        -----------
          Total shareholders' equity .......................................................................              2,017,853
                                                                                                                        -----------
          Total liabilities and shareholders' equity .......................................................            $ 2,691,670
                                                                                                                        ===========

<FN>

                           The accompanying notes are an integral part of these financial statements.

</FN>
</TABLE>


                                                             F-2
<PAGE>

                                 M.D. LABS, INC.
                      CONSOLIDATED STATEMENTS OF INCOME
                    FOR THE YEARS ENDED MAY 31, 1996 AND 1995

                                                            1996         1995
                                                            ----         ----
Net sales ............................................   $5,191,067   $4,193,997
Cost of goods sold ...................................    1,510,479    1,608,568
                                                         ----------   ----------
Gross profit .........................................    3,680,588    2,585,429
Selling, general and administrative ..................    2,141,926    2,012,641
Income from operations ...............................    1,538,662      572,788
Interest expense .....................................       12,991
                                                         ----------   ----------
Income before income tax .............................    1,525,671      572,788
Income tax benefit ...................................       86,039
                                                         ----------   ----------
Net income ...........................................   $1,611,710   $  572,788
                                                         ==========   ==========
Pro forma net income data (unaudited):
     Income before income tax ........................   $1,525,671   $  572,788
     Pro forma income taxes ..........................      610,039      229,115
                                                         ----------   ----------
          Pro forma net income .......................   $  915,632   $  343,673
                                                         ==========   ==========
     Pro forma net income per share ..................   $     0.27   $     0.10
                                                         ==========   ==========
     Shares used in pro forma net income per share ...    3,329,899    3,329,899
                                                         ==========   ==========

  The accompanying notes are an integral part of these financial statements.



                                      F-3
<PAGE>

<TABLE>
                                                           M.D. LABS, INC.
                                           CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
                                              FOR THE YEARS ENDED MAY 31, 1996 AND 1995

<CAPTION>
                                                    MEMBERS'          COMMON             PAID-IN         UNEARNED
                                                    EQUITY             STOCK             CAPITAL       COMPENSATION        TOTAL
                                                 -----------        -----------        -----------     ------------     -----------
<S>                                              <C>                <C>                <C>               <C>             <C>        
Balances as of May 31, 1994 ..............       $ 1,424,471        $                  $                 $               $1,424,471
Cash distributions .......................          (692,817)                                                              (692,817)
Contributions ............................           400,000                                                                400,000
Net income ...............................           572,788                                                                572,788
                                                 -----------        -----------        -----------       --------        -----------
Balances as of May 31, 1995 ..............         1,704,442                                                              1,704,442
                                                 -----------        -----------        -----------       --------        -----------
Cash distributions .......................        (1,300,000)                                                            (1,300,000)
Issuance of stock warrants ...............                                                   5,576         (4,500)            1,076
Amortization of unearned
 compensation ............................                                                                    625               625
Net income ...............................         1,611,710                                                              1,611,710
Conversion of members' equity
 to common stock .........................        (2,016,152)             3,000          2,013,152
                                                 -----------        -----------        -----------       --------        -----------
Balances as of May 31, 1996 ..............       $         0        $     3,000        $ 2,018,728       $ (3,875)       $2,017,853
                                                 ===========        ===========        ===========       ========        ===========

<FN>
                             The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>


                                                                 F-4
<PAGE>

<TABLE>
                                                           M.D. LABS, INC.
                                                CONSOLIDATED STATEMENTS OF CASH FLOWS
                                              FOR THE YEARS ENDED MAY 31, 1996 AND 1995

<CAPTION>
                                                                                                       1996                 1995
                                                                                                       ----                 ----
<S>                                                                                                <C>                  <C>        
Cash flows from operating activities:
     Net income ..........................................................................         $ 1,611,710          $   572,788
          Adjustments to reconcile net income to cash provided
               by operating activities:
               Depreciation and amortization .............................................             183,461              145,032
          Changes in assets and liabilities:
               Increase in accounts receivable ...........................................            (113,329)            (151,814)
               Increase in inventories ...................................................            (608,034)             (81,578)
               Increase in deferred tax asset ............................................             (86,039)
               (Increase) decrease in other current assets ...............................               7,588              (51,508)
               (Increase) decrease in deposits and other assets ..........................               6,718              (32,472)
               Increase in accounts payable and accrued expenses .........................              92,371               74,973
                                                                                                   -----------          -----------
                    Net cash provided by operating activities ............................           1,094,446              475,421
                                                                                                   -----------          -----------
Cash flows from investing activities:
     Purchases of property and equipment .................................................            (121,832)             (56,944)
     Purchase of Olympian Global .........................................................             (50,000)
                                                                                                   -----------          -----------
                    Net cash used in investing activities ................................            (171,832)             (56,944)
                                                                                                   -----------          -----------
Cash flows from financing activities:
     Proceeds from notes payable .........................................................             300,000
     Repayment of notes payable ..........................................................             (50,000)
     Distributions to members ............................................................          (1,300,000)            (692,817)
     Contributions from members ..........................................................                                  400,000
                                                                                                   -----------          -----------
                    Net cash provided by (used in) financing activities ..................          (1,050,000)            (292,817)
                                                                                                   -----------          -----------
Net increase (decrease) in cash and cash equivalents .....................................            (127,386)             125,660
Cash and cash equivalents, beginning of year .............................................             219,185               93,525
                                                                                                   -----------          -----------
Cash and cash equivalents, end of year ...................................................         $    91,799          $   219,185
                                                                                                   ===========          ===========
     Non-cash investing and financing activities:
     Olympian Global assets received for notes payable....................................         $   210,000

<FN>
                             The accompanying notes are an integral part of these financial statements.
</FN>
</TABLE>


                                                                 F-5
<PAGE>

                               M.D. Labs, Inc.

                 Notes to Consolidated Financial Statements

1. ORGANIZATION AND OPERATIONS:

   M.D. Labs, Inc. and its subsidiary, Belnik Investment Group, Inc., are in the
business of developing,  packaging,  marketing and distributing  natural dietary
supplements  (consisting  primarily of herbal  products)  and weight  management
products.  The formulation,  processing,  packaging,  labeling,  product claims,
advertising and marketing,  including  direct  marketing,  of these products are
subject to regulation in the U.S. by one or more federal agencies, including the
FDA, the FTC, the  Consumer  Product  Safety  Commission,  the USDA,  the United
States Postal Service and the Environmental Protection Agency. Sales are made to
large retailers,  distributors and consumers, primarily in the United States and
Japan.

   M.D. Labs, Inc., a Delaware  corporation,  was incorporated in February 1996.
On May 31, 1996, it exchanged  three million  shares of its common stock for all
of the investment units of Houston Enterprises,  L.L.C. (the "Predecessor"),  an
Arizona limited liability company.  Concurrently, but prior to the exchange, the
members of the Predecessor sold in a private  placement  approximately  16.6% of
their investment units for $1,744,313. The Company received no proceeds from the
sale; however, private placement costs of $70,000 were paid by the Company.

   On February 26, 1996, M.D. Labs, Inc.  acquired from common owners all of the
assets  of Belnik  Investment  Group,  Inc.  ("Belnik")  from two  owners of the
Predecessor  for $1,000 and  warrants to purchase  21,000  shares of M.D.  Labs'
common stock.

   On January 16, 1996,  the  Predecessor  purchased  all the assets of Olympian
Global, L.L.C., an unaffiliated Arizona limited liability company, for $260,000.
The excess of cost over the fair value of the net assets acquired of $240,000 is
included in intangibles.  On February 14, 1994, the Predecessor purchased all of
the assets of Houston  Enterprises,  Inc., an unaffiliated  Arizona corporation,
for  $1,350,000.  The  excess  of cost  over  the fair  value of the net  assets
acquired  of  $506,328  is  included  in  intangibles.  Both  transactions  were
accounted  for in  accordance  with  the  purchase  method  of  accounting  and,
accordingly,  the results of operations  have been included in the  consolidated
results of operations from the respective dates of acquisition.

2. SIGNIFICANT ACCOUNTING POLICIES:

 Basis of Presentation

   M.D. Labs, Inc., its Predecessor, and Belnik have historically operated under
a high degree of common  ownership  and  management  control.  Accordingly,  the
consolidated  financial  statements include the accounts of M.D. Labs, Inc., its
wholly-owned  subsidiary,  Belnik and its  Predecessor  (the  "Company") for all
periods  presented.   All  intercompany  balances  and  transactions  have  been
eliminated.

   The accompanying  consolidated  financial  statements at May 31, 1996 reflect
the exchange of common shares for the investment  units of its  Predecessor,  an
L.L.C.

 Use of Estimates

   The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the  reported  amounts of revenues  and expenses  during the  reporting  period.
Actual results could differ from those estimates. 

 Cash and Cash Equivalents

   For  purposes of the  statements  of cash flows,  the Company  considers  all
highly liquid investments with a maturity of three months or less at the time of
acquisition to be cash  equivalents,  carried at cost, which  approximates  fair
value. At times,  the Company's cash deposited in financial  institutions may be
in excess of federally insured limits.


                                      F-6
<PAGE>

                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)


 Inventories

   Inventories are stated at the lower of cost or market.  Cost is determined on
a first-in,  first-out basis.  Inventories  consist primarily of finished goods,
finished but not packaged (semi-finished) goods, raw herbs and packaging.

 Property and Equipment

   Property  and  equipment  are stated at cost.  Depreciation  is  provided  on
depreciable assets by the straight-line method over estimated useful lives while
leasehold  improvements  are  amortized  by the  straight-line  method  over the
shorter of estimated useful lives or the remaining lease terms.

   When items are retired or disposed of, the cost and accumulated  depreciation
or  amortization  are removed from the accounts and any gain or loss is included
in the statements of income.

 Intangible Assets

   Amortization of the intangibles is as follows:

          Goodwill, including trademarks                    15 years
          Non-compete agreements                             3 years
          Product propriety rights                          10 years

   The Company  assesses the  recoverability  of goodwill at each balance  sheet
date by  determining  whether  amortization  of the assets  over their  original
estimated useful life can be recovered  through  estimated  future  undiscounted
operating income, excluding amortization.

 Revenue Recognition

   Sales and related  cost of sales are  recorded at the time of shipment  and a
provision  for  anticipated  sales  returns is  recorded  based upon  historical
experience.

 Stock-Based Compensation

   In October 1995, the Financial  Accounting  Standards Board issued  Financial
Accounting  Standard No. 123,  Accounting  for  Stock-Based  Compensation  ("FAS
123"),  which defines a fair value based method of accounting for employee stock
options or similar  equity  instruments.  However,  it also  allows an entity to
continue to account for these plans  according to  Accounting  Principles  Board
Opinion  No. 25 ("APB  25"),  provided  proforma  disclosures  of net income and
earnings  per share are made as if the fair  value  based  method of  accounting
defined  by FAS 123 had  been  applied.  The  Company  anticipates  electing  to
continue to measure  compensation  expense  related to employee  stock  purchase
options using APB 25, and will provide proforma disclosures as required.

 Income Taxes

   For the two years ended May 31, 1996, the Predecessor  elected under Internal
Revenue Code  Sub-Chapter K to be treated as a limited  liability  company,  and
accordingly,  is generally  not subject to federal and state income  taxes.  For
income tax  reporting  purposes  for these  years,  all profits and losses,  and
certain  other  items,  were passed  through to the members of the  Predecessor.
Since the  income of M.D.  Labs,  Inc.  will be  taxable  after May 31,  certain
temporary  differences  between  financial and tax reporting are reflected as an
income tax  benefit in the  statement  of income for the year ended May 31, 1996
and as deferred tax assets in the balance sheet as of May 31, 1996. 



                                      F-7
<PAGE>
                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)


3. CONCENTRATION OF RISK:

   Financial  instruments  subject to credit  risk  consist  primarily  of trade
accounts receivable.  In the normal course of business,  M.D. Labs, Inc. extends
unsecured  credit to its  customers.  Additionally,  M.D. Labs has certain sales
concentrations.  As of and for  the  year  ended  May 31,  1996,  the  following
concentrations existed:

 Accounts Receivable

   Seven  customers  comprised  approximately  60%  of the  accounts  receivable
balance.

 Customer Sales

   One customer  comprised  approximately  12.2% of net sales for the year ended
May 31, 1996. No customer comprised sales in excess of 10% during the year ended
May 31, 1995.

 Product Sales Lines

   Major product  lines,  as a percentage of sales,  for the years ended May 31,
1996 and 1995 were as follows:

                                                    1996          1995
                                                    ----          ----
          Product A ......................           51%           72%
          Product B ......................           25%            0%
          Product C ......................           10%           20%

 International Sales

   International sales during the past two years were as follows:

          1996 ...........................                   $904,901
          1995 ...........................                   $102,990

4. INVENTORIES:

   Inventories consist of the following:

                                                                1996
                                                                ----
          Finished and semi-finished goods ...........      $  784,987
          Raw materials ..............................         295,419
                                                            ----------
                                                            $1,080,406
                                                            ==========

5. PROPERTY AND EQUIPMENT:

   Property and equipment consist of the following:

                                                                1996
                                                                ----
          Computers and equipment .........................   $212,112
          Leasehold improvements ..........................     85,985
          Furniture and fixtures ..........................     38,057
          Vehicles ........................................      4,232
                                                              --------
                                                               340,386
          Less accumulated depreciation and amortization ..    120,987
                                                              --------
                                                              $219,399
                                                              ========



                                      F-8
<PAGE>
                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)


6. INTANGIBLES:

   Intangibles consist of the following:

                                                                1996
                                                                ----
          Goodwill, including trademarks ..............       $346,328
          Non-compete agreements ......................        300,000
          Product propriety rights ....................        100,000
                                                              --------
                                                               746,328
          Less accumulated amortization ...............        225,596
                                                              --------
                                                              $520,732
                                                              ========

7. NOTES PAYABLE:

   At May 31, 1996, notes payable included:

Promissory note payable to Belfer Labs, L.L.C., a related
  party, due March 6, 1997, 12% interest .........................      $300,000
Note payable to Olympian Global, L.L.C., 7.5% interest,
  collateralized by the right to the tradename of the
  purchased product line .........................................       160,000
                                                                        --------
                                                                        $460,000
                                                                        ========

   The Belfer  note is  collateralized  by  substantially  all of the  Company's
assets.

   The  Olympian  note  matures on the  earliest of February 28, 1997 or 30 days
after the Company becomes a publicly traded company. The note also provides that
if certain sales levels are reached prior to January 13, 1997,  the Company must
pay an additional  $40,000.  Based on current sales levels, the Company does not
believe  that  payment of this amount is  probable;  therefore,  no liability is
reflected in the financial statements.

8. COMMITMENTS:

   M.D. Labs, Inc. is obligated under a long-term operating lease for office and
warehouse facilities through the year 2000.

   Annual rental commitments under the above lease are as follows:

         MAY 31,
         -------
          1997 .................................              $ 83,280
          1998 .................................                86,757
          1999 .................................                91,095
          2000 .................................                95,649
          2001 .................................                15,303
                                                              --------
                                                              $372,084
                                                              ========

   Rent expense under all operating leases amounted to $80,231 and $62,310,  for
the years ended May 31, 1996 and 1995, respectively.

   M.D. Labs, Inc. is obligated  under various  royalty  agreements with product
designers.  The  agreements are based on product sales levels and expire through
February 1999. Royalty expense for the years ended May 31, 1996 and May 31, 1995
was $31,843 and $607, respectively.


                                      F-9
<PAGE>
                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)


9. STOCK WARRANTS AND OPTIONS:

 Stock Warrants

   Warrant transactions for the year ended May 31, 1996 were as follows:

               Warrants granted in 1996, exercise price at:
                    $0.50 ..................................    60,000
                    $1.00 ..................................    51,000
                    $3.50 ..................................   107,656
                    Initial public offering price ..........    10,765
                                                               -------
               Outstanding at May 31, 1996 .................   229,421
                                                               =======

   During  1996,  as officer  compensation,  the  Company  granted  warrants  to
purchase an  aggregate  total of 60,000  common  shares at an exercise  price of
$0.50 and 51,000 common shares at an exercise price of $1.00. The $0.50 warrants
become  exercisable in equal  increments at the end of calendar years 1996, 1997
and 1998. The $1.00 warrants  become  exercisable as follows:  10,000 on June 3,
1996,  17,000 on December 31, 1996 and 1997, and 7,000 on December 31, 1998. All
warrants  expire on June 2, 2001.  Compensation  expense is recognized  pro rata
during the periods in which the  warrants are earned.  Compensation  expense for
the year ended May 31, 1996 was $625.

   In conjunction with the 1996 private  placement,  certain financial  advisors
were granted  warrants to purchase 107,656 common shares at an exercise price of
$3.50 per share and 10,765  shares at an  exercise  price  equal to the  selling
price set for shares  offered at such time as the  Company  initially  registers
shares for sale to the public.  These warrants are  exercisable  immediately and
expire on May 31, 2001.

   On June 2, 1996,  the Company  sold for $1,500 a warrant to  purchase  75,000
shares at an exercise  price of $5.00 and 75,000 shares at an exercise  price of
$10.00,  exercisable immediately.  Additionally,  the Company granted an officer
and a director  warrants to purchase an aggregate  total of 85,000  shares at an
exercise price of $3.50.  These warrants become exercisable at the end of fiscal
years 1997, 1998 and 1999 according to the following  schedule:  23,333,  28,333
and 33,334 shares, per year, respectively.  The above 235,000 warrants expire on
June 2, 2001.

 Stock Options

   The Company  has adopted a Stock  Option  Plan,  dated June 1, 1996,  for the
granting of Incentive Stock Options and  Nonqualified  Stock Options.  Officers,
directors and  employees of the Company are eligible to receive  these  options.
The  aggregate  number of shares  that may be issued  pursuant  to  exercise  of
options granted under the Plan shall be 300,000 shares.

   Subsequent to June 1, 1996,  options were granted to purchase  224,000 shares
of common stock at $3.50 a share and additional options were granted to purchase
5,000 shares of common stock at $6.00 a share. These options will vest as to one
third of the  underlying  shares on each of June 1, 1997,  1998 and 1999.  Also,
options were granted to certain  directors to purchase  40,000  shares of common
stock at $8.00 a share. The directors'  options were 100% vested as of September
1996.


                                      F-10
<PAGE>
                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)


10. INCOME TAXES:

   The income tax effect of  temporary  differences  between  financial  and tax
reporting  gives rise to the  deferred  income tax assets  which  consist of the
following:

                                                            MAY 31, 1996
                                                            ------------
          Current:
               Accounts receivable ...................         $11,150
               Inventories ...........................           2,800
               Accrued expenses ......................          12,733
                                                               -------
                                                                26,683
          Noncurrent:
               Intangibles ...........................          59,356
                                                               -------
                                                               $86,039
                                                               =======

11. RELATED PARTY TRANSACTIONS:

   The Company retained the services of two employee leasing firms, Propay, Inc.
("Propay")  and  Employee  Solutions,  Inc.  ("ESI").  Both  Propay  and ESI are
entities related by common ownership to the Company.  For the year ended May 31,
1995, the  Predecessor  paid Propay  approximately  $329,000,  and for the years
ended May 31, 1996 and 1995, the Predecessor paid ESI approximately $923,000 and
$506,000, respectively, for employee leasing and related expenses.

   On March 10, 1994, Pure Source  International,  LTD., a British Virgin Island
Company  ("Pure  Source"),  was  incorporated  and  entered  into  a  consulting
agreement with the Predecessor to provide  marketing,  promotional,  advertising
and other similar  services with respect to the sale of products  outside of the
United  States of America.  Pure Source was an  affiliated  company  with common
ownership of the Predecessor.  During the year ended May 31, 1995,  Houston paid
Pure Source  consulting  fees  totaling  $353,600.  On December  31,  1995,  the
Consulting Agreement terminated.

   See Note 7, Notes Payable.

12. FAIR VALUE OF FINANCIAL INSTRUMENTS:

   Financial  Accounting  Standard  No. 107 requires the Company to disclose the
estimated  fair value of its  financial  instruments.  The  Company's  financial
instruments  include cash and cash equivalents,  accounts  receivable,  accounts
payable and notes payable.  The carrying amounts of cash  equivalents,  accounts
receivable, accounts payable and notes payable approximate fair value at May 31,
1996.

13. SUBSEQUENT EVENTS:

   Subsequent to May 31, 1996, the Board of Directors approved an initial public
offering of the Company's common stock. Also see Note 9.

14. UNAUDITED PRO FORMA DATA:

   The following pro forma data has been presented on the historical  statements
of income.  

      a.  Income tax  expense for the years ended May 31, 1996 and 1995 has been
   presented  as if the Company was a C  corporation  during  those  years.  The
   income tax expense was calculated assuming an effective tax rate of 40%.



                                      F-11
<PAGE>

                                 M.D. Labs, Inc.

             Notes to Consolidated Financial Statements--(Continued)

         The pro forma provision for income taxes consists of:

                                                  YEARS ENDED MAY 31,
                                               -----------------------
                                                 1995           1994
                                                 ----           ----
          Current expense:
               Federal .................       $591,000       $195,000
               State ...................        105,000         34,000
                                               --------       --------
                                                696,000        229,000
          Deferred benefit:
               Federal .................         73,133
               State ...................         12,906
                                               --------       --------
                                                 86,039
                                               --------       --------
                                               $609,961       $229,000
                                               ========       ========

         Total pro forma  provision for income taxes differs from the "expected"
      pro forma tax expense of 34% due to state income taxes, net of the federal
      benefit, of 6%.

      b. Pro forma net income per share has been  computed by dividing pro forma
   net income for the years ended May 31, 1996 and 1995 by the 3 million  shares
   outstanding  as of May 31, 1996 and common  stock  equivalents  (representing
   warrants and options issued within 12 months of the initial  public  offering
   in  accordance  with  Securities  and Exchange  Commission  Staff  Accounting
   Bulletin No. 83).



                                      F-12
<PAGE>

INSIDE BACK COVER:

12 photographs (4 rows x 3 columns) surrounding M.D. Labs Logo:

1.       Woman in lab coat operating computer
2.       Open field
3.       Truss of bridge from below
4.       Back of woman in bathing suit at beach, leaning against
         fence
5.       Man water skiing
6.       Top half of woman in pool
7.       Man with arms raised in bike race
8.       Man climbing cliff
9.       Woman running
10.      Beaker and flask containing liquid
11.      Field with farm buildings in background
12.      Transmitter with clouds in background

<PAGE>
=========================================  =====================================

   NO DEALER,  SALES  REPRESENTATIVES  OR
ANY OTHER PERSON HAS BEEN  AUTHORIZED  TO
GIVE  ANY  INFORMATION  OR  TO  MAKE  ANY
REPRESENTATIONS  IN CONNECTION  WITH THIS
OFFERING  OTHER THAN THOSE  CONTAINED  IN
THIS  PROSPECTUS,  AND, IF GIVEN OR MADE,
SUCH INFORMATION OR REPRESENTATIONS  MUST
NOT  BE  RELIED   UPON  AS  HAVING   BEEN              1,300,000 SHARES        
AUTHORIZED   BY   THE   COMPANY   OR  ANY                                      
UNDERWRITER.  THIS  PROSPECTUS  DOES  NOT    [ooo M.D. LABS, INC. LOGO ooo]    
CONSTITUTE   AN  OFFER  TO  SELL,   OR  A                                      
SOLICITATION  OF AN  OFFER  TO  BUY,  ANY                COMMON STOCK          
SECURITIES   OTHER  THAN  THE  REGISTERED                                      
SECURITIES  TO  WHICH IT  RELATES,  OR AN                                      
OFFER  TO,  OR  A  SOLICITATION  OF,  ANY                                      
PERSON IN ANY JURISDICTION  WHERE SUCH AN                                      
OFFER OR SOLICITATION  WOULD BE UNLAWFUL.                                      
NEITHER THE  DELIVERY OF THIS  PROSPECTUS                 ----------           
NOR ANY SALE MADE HEREUNDER SHALL,  UNDER                 PROSPECTUS           
ANY CIRCUMSTANCES, CREATE ANY IMPLICATION                 ----------           
THAT  THERE  HAS  BEEN NO  CHANGE  IN THE                                      
AFFAIRS  OF THE  COMPANY  SINCE  THE DATE                                      
HEREOF OR THAT THE INFORMATION  CONTAINED                   SENTRA             
HEREIN   IS   CORRECT   AS  OF  ANY  TIME           SECURITIES CORPORATION     
SUBSEQUENT TO THE DATE HEREOF.                                                 
                                                                               
              ----------                                    SPELMAN            
                                                          & CO., INC.         
           TABLE OF CONTENTS                                                 
                                                                       , 1996
                                      PAGE                                   
                                      ----   
Prospectus Summary ..................... 3   
The Company ............................ 3   
Risk Factors ........................... 5   
Use of Proceeds ........................14   
Limited Liability Company Distributions 15   
Dividend Policy ........................15   
Capitalization .........................15   
Selected Financial Data ................16   
Dilution ...............................17   
Management's Discussion and Analysis of      
 Financial Condition and Results of
 Operations ............................18
Business ...............................22
Management .............................32
Certain Transactions ...................36
Principal Stockholders .................38
Description of Capital Stock ...........39
Shares Eligible for Future Sale ........43
Underwriting ...........................44
Legal Matters ..........................45
Experts ................................45
Available Information ..................45
Index to Financial Statements ..........47

               ----------


   UNTIL                , 1996, (25 DAYS
AFTER THE DATE OF THIS PROSPECTUS),  ALL
DEALERS  EFFECTING  TRANSACTIONS  IN THE
REGISTERED  SECURITIES,  WHETHER  OR NOT
PARTICIPATING IN THIS DISTRIBUTION,  MAY
BE  REQUIRED  TO  DELIVER A  PROSPECTUS.
THIS IS IN ADDITION  TO THE  OBLIGATIONS
OF DEALERS TO DELIVER A PROSPECTUS  WHEN
ACTING AS UNDERWRITERS  AND WITH RESPECT
TO   THEIR    UNSOLD    ALLOTMENTS    OR
SUBSCRIPTIONS.

==========================================  ====================================

<PAGE>
                                   PART II
                    INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 24. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

   Section  145(a)  of  the  Delaware  General  Corporation  Law  (the  "General
Corporation Law") provides that a Delaware  corporation may indemnify any person
who was or is a party or is  threatened  to be made a party  to any  threatened,
pending or  completed  action,  suit or  proceeding,  whether  civil,  criminal,
administrative or investigative  (other than an action by or in the right of the
corporation)  by  reason  of the  fact  that he is or was a  director,  officer,
employee or agent of the  corporation or is or was serving at the request of the
corporation as a director,  officer, employee or agent of another corporation or
enterprise,  against expenses,  judgments,  fines and amounts paid in settlement
actually and reasonably  incurred by him in connection with such action, suit or
proceeding if he acted in good faith and in a manner he  reasonably  believed to
be in or not opposed to the best interests of the corporation, and, with respect
to any criminal  action or  proceeding,  had no cause to believe his conduct was
unlawful.

   Section 145(b) provides that a Delaware  corporation may indemnify any person
who was or is a party or is  threatened  to be made a party  to any  threatened,
pending or  completed  action or suit by or in the right of the  corporation  to
procure a judgment in its favor by reason of the fact that such person  acted in
any of the capacities set forth above,  against expenses actually and reasonably
incurred by him in  connection  with the defense or settlement of such action or
suit if he acted under similar standards,  except that no indemnification may be
made in respect to any claim, issue or matter as to which such person shall have
been adjudged to be liable to the corporation unless and only to the extent that
the court in which such action or suit was brought shall  determine that despite
the adjudication of liability,  such person is fairly and reasonably entitled to
be indemnified for such expenses which the court shall deem proper.

   Section  145 further  provides  that to the extent a director or officer of a
corporation has been successful in the defense of any action, suit or proceeding
referred to in subsections (a) and (b) or in the defense or any claim,  issue or
matter therein, he shall be indemnified against expenses actually and reasonably
incurred by him in connection  therewith;  that indemnification  provided for by
Section  145  shall  not be deemed  exclusive  of any other  rights to which the
indemnified  party may be entitled;  and that the  corporation  may purchase and
maintain insurance on behalf of a director or officer of the corporation against
any  liability  asserted  against him or incurred by him in any such capacity or
arising out of his status as such, whether or not the corporation would have the
power to indemnify him against such liabilities under such Section 145.

   Section 102(b)(7) of the General  Corporation Law provides that a corporation
in its original  certificate of  incorporation  or an amendment  thereto validly
approved by stockholders may eliminate or limit personal liability of members of
its board of directors or governing body for violations of a director's  duty of
care.  However,  no such  provision  may  eliminate or limit the  liability of a
director  for  breaching  his duty of loyalty,  acting or failing to act in good
faith,  engaging in intentional  misconduct or knowingly violating a law, paying
an unlawful dividend or approving an unlawful stock repurchase,  or obtaining an
improper  personal  benefit.  A  provision  of this  type has no  effect  on the
availability of equitable remedies, such as injunction or rescission, for breach
of fiduciary duty. The Company's  Certificate of  Incorporation  contains such a
provision.

   The Company's  Bylaws provide that the Company shall  indemnify  officers and
directors to the full extent  permitted by and in the manner  permissible  under
the laws of the State of Delaware.

   The  Company  is in the  process of  obtaining  comprehensive  directors  and
officers liability  insurance coverage,  and anticipates  obtaining an insurance
policy  with an  aggregate  policy  limit of not less  than  $5,000,000  for the
benefit of its officers and  directors  insuring  such persons  against  certain
liabilities,  including liabilities under the securities laws, no later than the
effective date of this Offering.

   The Company has entered into  indemnity  agreements  with its  directors  and
officers for  indemnification  of and advance of expenses to such persons to the
full extent  permitted  by law. The Company  intends to execute  such  indemnity
agreements with its future officers and directors.


                                      II-1
<PAGE>

   The Company and its officers,  directors and other persons are entitled to be
indemnified under certain circumstances for certain securities law violations in
the Underwriting Agreement (attached on Exhibit 1.1 hereto).

   The holders of the Company's  capital  stock or warrants to purchase  capital
stock who have contractual registration rights are required to be indemnified by
the Company against losses,  claims,  damages or liabilities  arising out of any
untrue  statement  of a material  fact or  omission  thereof  in a  Registration
Statement  under  the  Securities  Act of  1933.  The  Company's  obligation  to
indemnify  such holders  includes the  officers,  directors and partners of such
holders,  some of whom are currently directors of the Company. The Company shall
not be liable for any such  indemnity  to the extent that any such loss,  claim,
damage or  liability  arises  out of or is based upon any  untrue  statement  or
material  omission in reliance upon and in conformity  with written  information
furnished by such person to the Company, specifically for use therein.

   The  indemnification  provided  as set forth  above is not  exclusive  of any
rights to which a director  or  officer  of the  Company  may be  entitled.  The
general effect of the forgoing  provisions may be to reduce the circumstances in
which a director or officer may be required to bear the economic  burdens of the
foregoing liabilities and expenses.

ITEM 25. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

   The  following   table  sets  forth  the  estimated   expenses   (other  than
underwriting  discounts) to be born by the  Registrant  in  connection  with the
issuance and distribution of the securities offered hereby:

                                                                          TOTAL
                                                                          -----
SEC filing fee .................................................        $  3,609
NASD filing fee ................................................           1,547
Underwriter's non-accountable expense allowance ................         313,950
Nasdaq National Market entry fee ...............................          26,500
Blue Sky fees and expenses, including legal fees ...............          15,000
Printing and engraving .........................................          75,000
Legal fees and expenses ........................................          90,000
Accounting fees and expenses ...................................          50,000
Transfer agent and registrar fees and expenses .................           2,000
Directors' and officers' liability insurance ...................         100,000
Miscellaneous ..................................................          12,394
                                                                        --------
  TOTAL ........................................................        $690,000
                                                                        ========

ITEM 26. RECENT SALES OF UNREGISTERED SECURITIES.

   Set forth below is information regarding  unregistered sales of the Company's
Common Stock since January 1, 1996:

   On May 31,  the  Company  issued  3,000,000  shares  of its  Common  Stock in
exchange for 100% of the  outstanding  units of  membership  interest in Houston
Enterprises, L.L.C., the Company's predecessor. Certain of the units of interest
in Houston  Enterprises,  L.L.C.  were sold by  members of Houston  Enterprises,
L.L.C. for $105,000 per unit immediately prior to the conversion,  and each unit
was exchanged for 30,000 shares of the Company's  Common Stock. The members paid
a placement  fee of $5,250 per unit placed and the  Company  issued  warrants to
purchase  10,765 shares of Common Stock to Capital West Holding  Company,  Inc.,
which acted as private  placement agent for the selling  members.  In connection
with the transactions, the Company also issued warrants to purchase an aggregate
of  107,656  shares of Common  Stock to  entities  associated  with an  attorney
involved in the  placement  and to a director  of the  Company who  subsequently
resigned.

   On February 7, the Company issued warrants to purchase an aggregate of 21,000
shares of Common Stock,  at an exercise price of $1.00 per share, to officers of
the Company in connection  with the purchase of Belnik  Investment  Group,  Inc.
from the officers. See "Certain Transactions." On that same date, the


                                      II-2
<PAGE>

Company issued  warrants to purchase 30,000 and 60,000 shares of Common Stock at
exercise prices of $1.00 and $0.50 respectively, to an officer of the Company in
connection with his employment agreement.

   On June 3, 1996,  the Company  issued a warrant to purchase  75,000 shares of
Common  Stock at an  exercise  price of $5.00 per share and  another  warrant to
purchase  75,000  shares at an exercise  price of $10.00 per share to Michael J.
Dwyer for $1,500.  On that same date,  the Company  issued a warrant to purchase
40,000  shares  of  Common  Stock at an  exercise  price of $3.50 per share to a
director  of the  Company  in  connection  with his  consulting  agreement  (see
"Management"),  and a warrant to purchase  45,000  shares of Common  Stock at an
excercise price of $3.50 per share to an employee of the Company.

   Since June 1996,  the Company has issued  options to purchase an aggregate of
269,000  shares of Common Stock to its employees  and directors  pursuant to the
Company's  Stock  Option Plan at option  exercise  prices  ranging from $3.50 to
$8.00 per share.

   Exemption from registration for each transaction  described above was claimed
pursuant to Section 4(2) of the Securities Act of 1933.

ITEM 27. EXHIBITS.

   See Exhibit  Index  following  the Signature  page which is  incorporated  by
herein by reference.

ITEM 28. UNDERTAKINGS.

   The undersigned  Registrant hereby undertakes to provide to the Underwriters,
at the closing  specified in the  underwriting  agreement,  certificates in such
denominations  and registered in such names as required by the  Underwriters  to
permit prompt delivery to each purchaser.

   Insofar as indemnification  for liabilities  arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
Registrant pursuant to the foregoing  provisions,  or otherwise,  the Registrant
has been advised that in the opinion of the Securities  and Exchange  Commission
such  indemnification  is against  public policy as expressed in the Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the Registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the Registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

   The undersigned Registrant hereby undertakes that:

   (1) For purposes of  determining  any liability  under the  Securities Act of
1933,  the  information  omitted from the form of prospectus  filed as part of a
registration  statement in reliance  upon Rule 430A and contained in the form of
prospectus  filed by the Registrant  pursuant to Rule 424(b)(1) or (4) or 497(h)
under the Securities Act of 1933 shall be deemed to be part of the  registration
statement as of the time the Commission declared it effective.

   (2) For  determining  any liability  under the Securities  Act of 1933,  each
post-effective  amendment that contains a form of prospectus  shall be deemed to
be a new  registration  statement  relating  to the  securities  offered  in the
registration statement,  and that offering of the securities at that time as the
initial bona fide offering of those securities.



                                      II-3
<PAGE>

                                  SIGNATURES

   In  accordance  with the  requirements  of the  Securities  Act of 1933,  the
registrant  hereby  certifies that it has reasonable  grounds to believe that it
meets all of the  requirements  of filing on Form SB-2, and has authorized  this
registration statement to be signed on its behalf by the undersigned in the City
of Phoenix,  State of Arizona,  on September 12, 1996. 


                                     M.D. LABS, INC. 



                                     By: /s/ HOOMAN NIKZAD
                                     -------------------------------------------
                                     Hooman Nikzad 
                                     Chief Executive Officer and Director


<TABLE>

   In accordance  with the  requirements  of the  Securities  Act of 1933,  this
registration statement was signed by the following persons in the capacities and
on the dates indicated.

<CAPTION>

             PERSON                                TITLE                              DATE
             ------                                -----                              ----
<S>                             <C>                                         <C>
 /s/       HOOMAN NIKZAD        Chief Executive Officer and Director        September 12, 1996
 ------------------------------  (Principal Executive Officer)
           Hooman Nikzad

 /s/       TODD P. BELFER       President and Director                      September 12, 1996
 ------------------------------
           Todd P. Belfer

 /s/  FARADJOLLAH DJAHANDIDEH   Vice President, Operations,                 September 12, 1996
 ------------------------------  Secretary/Treasurer and Director
      Faradjollah Djahandideh

 /s/     BRADLEY A. DENTON      Chief Financial Officer, Vice President,    September 12, 1996
 ------------------------------  Assistant Secretary (Principal Financial 
         Bradley A. Denton       and Accounting Officer)

 /s/      HARVEY A. BELFER      Director                                    September 12, 1996
 ------------------------------
          Harvey A. Belfer

 /s/    ALLAN RICHARD LYONS     Director                                    September 12, 1996
 ------------------------------
        Allan Richard Lyons

 /s/   KENNETH A. STEEL, JR.    Director                                    September 12, 1996
 ------------------------------
       Kenneth A. Steel, Jr.

</TABLE>

                                       S-1
<PAGE>

<TABLE>
                                 M.D. LABS, INC.
              EXHIBIT INDEX TO REGISTRATION STATEMENT ON FORM SB-2

<CAPTION>

EXHIBIT NO.                                        DESCRIPTION 
- -----------                                        -----------
<S>             <C>
 1.1            Proposed Form of Underwriting Agreement 
 1.2            Proposed Form of Selected Dealers Agreement 
 1.3            Proposed Form of Representatives' Warrants 
 3.1            Registrant's Amended Certificate of Incorporation 
 3.2            Registrant's Amended Bylaws 
 4.1            Articles Fourth, Eighth and Ninth of Registrant's Certificate of Incorporation (included in 
                Exhibit 3.1) 
 4.2            Articles II and VII of Registrant's Bylaws (included in Exhibit 3.2) 
 4.3*           Specimen Common Stock Certificate 
 5.1*           Opinion of Quarles & Brady 
10.1            Employment Agreement dated June 1, 1996 by and between Registrant and Hooman Nikzad 
10.2            Employment Agreement dated June 1, 1996 by and between Registrant and Todd P. Belfer 
10.3            Consulting and Noncompetition Agreement dated June 1, 1996 by and between Registrant and 
                Harvey A. Belfer 
10.4            Employment Agreement dated June 1, 1996 by and between Registrant and Faradjollah Djahandideh 
10.5            Employment Agreement dated June 1, 1996 by and between Registrant and Bradley A. Denton 
10.6            Stock Purchase Warrant dated February 7, 1996 issued to Hooman Nikzad 
10.7            Stock Purchase Warrant dated February 7, 1996 issued to Todd P. Belfer 
10.8            Stock Purchase Warrant dated February 7, 1996 issued to Bradley A. Denton 
10.9            Stock Purchase Warrant dated June 3, 1996 issued to Harvey A. Belfer 
10.10           Stock Purchase Warrant dated May 31, 1996 issued to Canyon Security, L.L.C. 
10.11           Stock Purchase Warrant dated May 31, 1996 issued to JBV Investments, L.C. 
10.12           Stock Purchase Warrant dated May 31, 1996 issued to Capital West Investment Holding Company, 
                Inc. 
10.13           Stock Purchase Warrant dated June 3, 1996 issued to Vincent Andrich 
10.14           Stock Purchase Warrant dated June 3, 1996 issued to Michael J. Dwyer 
10.15           Registrant's 1996 Stock Option Plan 
10.16           Form of Grant Letter pursuant to 1996 Stock Option Plan 
10.17           Stock Purchase Agreement dated February 26, 1996 by and between Hooman Nikzad and Todd P. 
                Belfer and Registrant 
10.18           Purchase agreement dated December 12, 1995 by and among Houston Enterprises, L.L.C., Marvin D. 
                and Nancy P. Brody, Harvey A. Belfer, Todd P. Belfer, Hooman Nikzad and Fradjollah Djahandideh 
10.19*          Form of M.D. Labs, Inc. Share Subscription Agreement 
10.20           Houston Enterprises, L.L.C. $300,000 Promissory Note payable to Belfer Labs, L.L.C. dated 
                March 6, 1996 
10.21           Product Purchase and Distribution Agreement dated January 2, 1996 by and between Belnik 
                Investment Group, Inc. and Houston Enterprises, L.L.C. and related Promissory Note 

                                      EX-1

<PAGE>

EXHIBIT NO.                                        DESCRIPTION 
- -----------                                        -----------

10.22           Asset Purchase Agreement dated January 16, 1996 between Olympian Global, L.C. and Houston 
                International, L.L.C. and related Promissory Note, Addendum and Security Agreement 
10.23           Facilities and Management Agreement dated January 2, 1995 between Houston Enterprises, L.L.C. 
                and Belnik Investment Group, Inc. 
10.24           Standard Lease dated April 25, 1995 between PS Partners VI, Ltd. and Houston International, 
                L.L.C. 
10.25           Marketing Services Agreement dated March 18, 1996 between Pure Source International, Ltd. and 
                Houston International, L.L.C. 
10.26           Form of Directors' and Officers' Indemnification Agreement 
11.1            Statement regarding computation of per-share earnings 
21.1            Subsidiaries of the Registrant 
23.1            Consent of Coopers & Lybrand L.L.P. 
23.2*           Consent of Quarles & Brady 
24              Powers of attorney 
27              Financial Data Schedule 


<FN>
- ---------- 
* To be filed by amendment 
</FN>
</TABLE>



                                      EX-2

                                 M.D. LABS, INC.
                                1,300,000 Shares


                             UNDERWRITING AGREEMENT



                                                          ________________, 1996



Spelman & Co., Inc.
(As Representative of the Several
Underwriters Named in Schedule 1 hereto)
2355 Northside Drive, Suite 200
San Diego, CA  92108

Dear Sirs:

         M.D.  Labs,  Inc.,  a  Delaware  corporation  (the  "Company"),  hereby
confirms its agreement (this  "Agreement") with you (the  "Representative")  and
members of the underwriting group (the "Underwriters"), as set forth below.


                                   SECTION 1.
                           Description of Transaction

         The  Company  proposes  to issue  and sell to the  Underwriters  on the
Closing Date (as defined  below),  pursuant to the terms and  conditions of this
Agreement,  an aggregate of 1,300,000  shares  ("Firm  Shares") of the Company's
Common  Stock  ("Common  Stock")  at a price of $____  per Share on the terms as
hereinafter  set  forth.  The  Company  also  proposes  to issue and sell to the
several  Underwriters  on or  after  the  Closing  Date not  more  than  195,000
additional Shares if requested by the Representative as provided in Section 3.02
of this Agreement (the "Option  Shares").  The Firm Shares and any Option Shares
are collectively referred to herein as the "Shares."


                                   SECTION 2.
                  Representations and Warranties of the Company

         In order to induce the  Underwriters to enter into this Agreement,  the
Company hereby represents and warrants to and agrees with the Underwriters that:

                  2.1  Registration  Statement and  Prospectus.  A  registration
statement on Form SB- 2 (File No. _______) with respect to the Shares, including
the related prospectus, copies of which

                                        1
<PAGE>
have  heretofore  been  delivered by the Company to the  Underwriters,  has been
filed by the Company in conformity  with the  requirements of the Securities and
Exchange  Commission  (the  "Commission")  under the  Securities Act of 1933, as
amended (the "Act"),  and one or more amendments to such registration  statement
have been so filed. After the execution of this Agreement, the Company will file
with the Commission  either (a) if such registration  statement,  as it may have
been amended, has been declared by the Commission to be effective under the Act,
a  prospectus  in the  form  most  recently  included  in an  amendment  to such
registration  statement (or, if no such amendment shall have been filed, in such
registration statement), with such changes or insertions as are required by Rule
430A under the Act or  permitted  by Rule 424(b)  under the Act and as have been
provided to and approved by the  Representative  prior to the  execution of this
Agreement,  or (b) if such registration  statement, as it may have been amended,
has not been  declared  by the  Commission  to be  effective  under the Act,  an
amendment to such registration statement, including a form of prospectus, a copy
of which  amendment  has been  furnished to and  approved by the  Representative
prior to the execution of this Agreement.  As used in this  Agreement,  the term
"Registration  Statement" means such registration statement on Form SB-2 and all
amendments  thereto,  including  the  prospectus,  all  exhibits  and  financial
statements,  as it becomes  effective;  the term "Preliminary  Prospectus" means
each  prospectus  included  in said  Registration  Statement  before it  becomes
effective;  and the term "Prospectus"  means the prospectus first filed with the
Commission  pursuant  to Rule  424(b)  under  the Act or,  if no  prospectus  is
required  to be  filed  pursuant  to said  Rule  424(b),  such  term  means  the
prospectus included in the Registration Statement when it becomes effective.

                  2.2 Accuracy of Registration Statement and Prospectus. Neither
the  Commission nor the "blue sky" or securities  authority of any  jurisdiction
has  issued  any  order  preventing  or  suspending  the use of any  Preliminary
Prospectus.  When (a) any Preliminary  Prospectus was filed with the Commission,
(b) the  Registration  Statement  or any  amendment  thereto  was or is declared
effective,  and (c) the  Prospectus or any  amendment or  supplement  thereto is
filed with the Commission pursuant to Rule 424(b) (or, if the Prospectus or such
amendment or  supplement is not required to be so filed,  when the  Registration
Statement or the amendment  thereto  containing  such amendment or supplement to
the  Prospectus  was or is  declared  effective)  and on the  Closing  Date  the
Prospectus,  as  amended  or  supplemented  at any such  time,  such  filing (i)
contained  or will  contain  all  statements  required  to be stated  therein in
accordance  with, and complied or will comply in all material  respects with the
requirements  of,  the Act and  the  rules  and  regulations  of the  Commission
promulgated  thereunder (the "Rules and  Regulations")  and (ii) did not or will
not  include  any  untrue  statement  of a  material  fact or omit to state  any
material fact necessary to make the  statements  therein not misleading in light
of the  circumstances  under which they were made. The foregoing  representation
does not apply to statements or omissions  made in any  Preliminary  Prospectus,
the  Registration  Statement or any amendment  thereto or the  Prospectus or any
amendment or supplement  thereto in reliance upon and in conformity with written
information   furnished   to  the  Company  by  any   Underwriter   through  the
Representative specifically for use therein.

                                        2
<PAGE>
                  2.3  Incorporation  and  Standing.  The  Company has been duly
incorporated and is validly existing as a corporation in good standing under the
laws of the State of Delaware and is duly  qualified  to transact  business as a
foreign  corporation  and is in  good  standing  under  the  laws  of all  other
jurisdictions where the ownership or leasing of its properties or the conduct of
its  business  requires  such  qualification,  except where the failure to be so
qualified does not amount to a material liability or disability to the Company.

                  2.4 Due Power and  Authority.  The Company has full  corporate
power to own or lease its  properties  and conduct its  business as described in
the  Registration  Statement and the  Prospectus or, if the Prospectus is not in
existence,  the most  recent  Preliminary  Prospectus;  and the Company has full
corporate  power to enter into this Agreement and to carry out all the terms and
provisions  hereof to be carried out by it. The  execution  and delivery of this
Agreement and  consummation of the  transactions  contemplated  herein have been
duly  authorized  by the Company and this  Agreement  has been duly executed and
delivered by the Company and constitutes the legal, valid and binding obligation
of the Company,  enforceable  against the Company in  accordance  with the terms
thereof,  except  as  may  be  limited  by  applicable  bankruptcy,  insolvency,
reorganization  or similar laws  affecting  creditors'  rights  generally and by
general  equitable  principles,  and as rights  to  indemnity  and  contribution
hereunder may be limited by applicable law.

                  2.5 Consents; No Defaults. The issuance,  offering and sale of
the Shares to the  Underwriters by the Company  pursuant to this Agreement,  the
compliance by the Company with the other  provisions  of this  Agreement and the
consummation of the other  transactions  herein  contemplated do not (a) require
the consent, approval,  authorization,  registration or qualification of or with
any  governmental  authority,  except such as have been  obtained,  or as may be
required  under  the  Act or  under  the  securities  or  blue  sky  laws of any
jurisdiction,  or (b) conflict with or result in a breach or violation of any of
the terms and  provisions  of, or  constitute a default  under,  any  indenture,
mortgage,  deed of trust,  lease or other  material  agreement or  instrument to
which the Company is a party or by which the Company or any of its properties is
bound, or the charter documents or bylaws of the Company,  or any statute or any
judgment,  decree,  order, rule or regulation of any court or other governmental
authority or any arbitrator applicable to the Company.

                  2.6 No Breach or Default.  The Company is not in breach of any
term or provision of its  Certificate  of  Incorporation  or Bylaws;  no default
exists,  and no event has  occurred  which with notice or lapse of time or both,
would  constitute a default,  in the Company's due performance and observance of
any term,  covenant or  condition  of any  indenture,  mortgage,  deed of trust,
lease,  note, bank loan or credit  agreement or any other material  agreement or
instrument  to which the Company or its  properties  may be bound or affected in
any  respect  which  would  have a  material  adverse  effect  on the  condition
(financial or otherwise), business, properties,  prospects, net worth or results
of operations of the Company.

                  2.7  Licenses.   The  Company   possesses  all   certificates,
authorizations and permits issued by the appropriate  federal,  state or foreign
regulatory  authorities  necessary  for the conduct of its  business,  including
without limitation the Food and Drug Administration, the Federal Trade

                                        3
<PAGE>
Commission, the Consumer Product Safety Commission, the United States Department
of  Agriculture,   the  United  States  Postal  Service  and  the  Environmental
Protection  Agency,  and the Company has not received any notice of  proceedings
relating  to  the   revocation  or   modification   of  any  such   certificate,
authorization or permit which, singly or in the aggregate,  if the subject of an
unfavorable  decision,  ruling or finding,  would  result in a material  adverse
change in the condition (financial or otherwise),  business prospects, net worth
or results of operations of the Company,  except as described in or contemplated
by the  Registration  Statement.  Each  approval,  registration,  qualification,
license,  permit, consent,  order,  authorization,  designation,  declaration or
filing by or with any regulatory,  administrative or other  governmental body or
agency necessary in connection with the execution and delivery by the Company of
this Agreement and the  consummation of the  transactions  contemplated  (except
such  additional  actions as may be  required  by the  National  Association  of
Securities  Dealers,  Inc. or may be  necessary  to qualify the Common Stock for
public  offering  under state  securities or blue sky laws) has been obtained or
made and each is in full force and effect.

                  2.8  Compliance   with  Laws.   Except  as  disclosed  in  the
Registration  Statement and in the  Prospectus  (or, if the Prospectus is not in
existence,  the most  recent  Preliminary  Prospectus),  the  Company  is not in
violation of any laws, ordinances, governmental rules or regulations to which it
is subject,  including  but not limited to the Federal  Food,  Drug and Cosmetic
Act,  the  Nutrition  Labeling  and  Education  Act of  1990,  and  the  Dietary
Supplement Health and Education Act of 1994, which would have a material adverse
effect  on  the  condition  (financial  or  otherwise),   business,  properties,
prospects, net worth or results of operations of the Company.

                  2.9 Existing  Capital  Structure and Shareholder  Rights.  The
Company has an authorized,  issued and outstanding  capitalization  as set forth
in, and capital  stock  conforms  in all  material  respects to the  description
contained in, the Prospectus or, if the Prospectus is not in existence, the most
recent Preliminary Prospectus. Except as described in the Registration Statement
and in the Prospectus  there are no outstanding (a) securities or obligations of
the  Company  convertible  into or  exchangeable  for any  capital  stock of the
Company,  (b) warrants,  rights or options to subscribe for or purchase from the
Company  any  such  capital  stock  or  any  such  convertible  or  exchangeable
securities  or  obligations,  or (c)  obligations  of the  Company to issue such
shares, any such convertible or exchangeable  securities or obligations,  or any
such warrants, rights or obligations.  All of the issued shares of capital stock
of the Company have been duly  authorized  and validly issued and are fully paid
and nonassessable, and have been issued in compliance with all federal and state
securities laws. No preemptive rights of shareholders  exist with respect to any
capital  stock of the  Company.  No  shareholder  of the  Company  has any right
pursuant  to any  agreement  which has not been waived or honored to require the
Company to register the sale of any securities owned by such  shareholder  under
the Act in the public  offering  contemplated  herein except as disclosed in the
Registration Statement. Other than MDLA, Inc. and Belnik Investment Group, Inc.,
the  Company  has no  subsidiaries,  and does not own any shares of stock or any
other equity interest in any firm, partnership, association or other entity.

                                        4
<PAGE>
                  2.10  Authority  for  Issuance of Shares.  The issuance of the
Common Stock issuable in connection with the Shares has been duly authorized and
at any Firm or Option Closing Date as defined  herein after payment  therefor in
accordance  herewith,  such Common Stock will be validly issued,  fully paid and
nonassessable.  The  Shares  will  conform  in all  material  respects  with all
statements with regard thereto in the Registration Statement and the Prospectus.

                  2.11 Title to Tangible Property. Except as otherwise set forth
in or contemplated by the Registration Statement and Prospectus, the Company has
good  and  marketable  title  to all  items of  personal  property  owned by the
Company, free and clear of any security interest, liens, encumbrances, equities,
claims and other defects,  except such as do not materially and adversely affect
the value of such property and do not materially  interfere with the use made or
proposed to be made of such  property by the Company,  and any real property and
buildings  held under lease by the Company are held under valid,  subsisting and
enforceable  leases,  with  such  exceptions  as  are  not  material  and do not
materially  interfere  with the use made or proposed to be made of such property
and buildings by the Company.

                  2.12 Title to  Intellectual  Property.  The  Company  owns the
trademarks  described in the  Registration  Statement.  The Company has received
assignments of all trademarks from Olympian Global.  The Company has applied for
registration of the trademark "M.D. Labs." The Company does not own any patents.
The Company owns or possesses, or can acquire on reasonable terms, all material,
trademarks,  service marks, trade names, licenses, copyrights and proprietary or
other confidential  information  currently employed by it in connection with its
business,  and the Company has not  received  any notice of  infringement  of or
conflict  with  asserted  rights of any third  party with  respect to any of the
foregoing intellectual property rights which, singly or in the aggregate, if the
subject of an unfavorable decision, ruling or finding would result in a material
adverse change in the condition  (financial or otherwise),  business  prospects,
net worth or results of  operations  of the  Company,  except as described in or
contemplated by the Prospectus.

                  2.13 Contract Rights. The agreements to which the Company is a
party  described  in  the  Registration   Statement  and  Prospectus  are  valid
agreements, enforceable by the Company in accordance with their terms, except as
the  enforcement  thereof may be limited by applicable  bankruptcy,  insolvency,
reorganization,  moratorium  or other  similar  laws  relating  to or  affecting
creditor's  rights generally or by equitable  principles,  and, to the Company's
knowledge,  the other  contracting  party or parties thereto are not in material
breach or material default under any of such agreements.

                  2.14 No Market  Manipulation.  The  Company  has not taken nor
will it take, directly or indirectly, any action designed to cause or result, or
which might reasonably be expected to cause or result,  in the  stabilization or
manipulation  of the price of any security of the Company to facilitate the sale
or resale of the Common Stock.

                                        5
<PAGE>
                  2.15 No Other Sales or Commissions.  The Company has not since
the filing of the Registration Statement (i) sold, bid for, purchased, attempted
to induce any person to purchase, or paid anyone any compensation for soliciting
purchases  of, its capital stock or (ii) paid or agreed to pay to any person any
compensation  for  soliciting  another to purchase any securities of the Company
except for the sale of Shares by the Company under this Agreement.

                  2.16   Accuracy  of  Financial   Statements.   The   financial
statements and schedules of the Company included in the  Registration  Statement
and the Prospectus,  or, if the Prospectus is not in existence,  the most recent
Preliminary  Prospectus,  fairly present in all material  respects the financial
position of the Company and the results of  operations  and changes in financial
condition  as of  the  dates  and  periods  therein  specified.  Such  financial
statements  and  schedules  have been  prepared  in  accordance  with  generally
accepted  accounting  principles  consistently  applied  throughout  the periods
involved except as otherwise noted therein and include all financial information
required to be included by the Act. The selected  financial data set forth under
the captions  "PROSPECTUS  SUMMARY--Summary  Financial  Information,"  "SELECTED
FINANCIAL DATA" and "MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF  OPERATIONS" in the  Prospectus,  or, if the Prospectus is not in
existence the most recent Preliminary Prospectus, fairly present in all material
respects, on the basis stated in the Prospectus or such Preliminary  Prospectus,
the information included therein.

                  2.17 Independent Public Accountant.  Coopers & Lybrand L.L.P.,
which have certified or shall certify certain of the financial statements of the
Company  filed  or to be  filed as part of the  Registration  Statement  and the
Prospectus,  are independent  certified public accountants within the meaning of
the Act and the Rules and Regulations.

                  2.18 Internal  Accounting.  The Company  maintains a system of
internal accounting controls sufficient to provide reasonable assurance that (a)
transactions  are executed in accordance with  management's  general or specific
authorization;  (b) transactions are recorded as necessary to permit preparation
of  financial  statements  in  conformity  with  generally  accepted  accounting
principles  and to  maintain  asset  accountability;  (c)  access  to  assets is
permitted   only  in   accordance   with   management's   general  or   specific
authorization;  and (d) the recorded  accountability for assets is compared with
the existing assets at reasonable intervals and appropriate action is taken with
respect to any differences.

                  2.19  Litigation.  Except  as set  forth  in the  Registration
Statement  and  Prospectus,  there is and at the  Closing  Date there will be no
action, suit or proceeding before any court or governmental agency, authority or
body pending or to the knowledge of the Company threatened which might result in
judgments  against the  Company not  adequately  covered by  insurance  or which
collectively  might  result in any  material  adverse  change  in the  condition
(financial or otherwise), the business or the prospects of the Company, or would
have a material  adverse effect on the properties or assets of the Company.  The
Company is not subject to the provisions of any injunction, judgement, decree or
order of any court, regulatory body, administrative agency or other

                                        6
<PAGE>
governmental  body or arbitral forum,  which might result in a material  adverse
change in the business, assets or condition of the Company.

                  2.20 No Material Adverse Change.  Subsequent to the respective
dates as of which  information  is given in the  Registration  Statement and the
Prospectus  (or,  if the  Prospectus  is  not  in  existence,  the  most  recent
Preliminary  Prospectus),  (a) the Company has not incurred any material adverse
change in or affecting the condition,  financial or otherwise, of the Company or
the  earnings,  business  affairs,  management,  or  business  prospects  of the
Company,  whether or not occurring in the ordinary course of business, (b) there
has not been any material  transaction  entered into by the Company,  other than
transactions  in the ordinary  course of business or  transactions  specifically
described in the  Registration  Statement as it may be amended or  supplemented,
(c) the Company has not  sustained any material  loss or  interference  with its
business or properties from fire, flood, windstorm,  accident or other calamity,
(d) the Company has not paid or declared  any  dividends  or other  distribution
with  respect  to its  capital  stock and the  Company  is not in default in the
payment of principal or interest on any outstanding  debt  obligations,  and (e)
there has not been any change in the capital  stock  (other than the sale of the
Common Stock hereunder or the exercise of outstanding  stock options or warrants
as described in the Registration Statement) or material increase in indebtedness
of the  Company.  The  Company  does  not  have any  known  material  contingent
obligation which is not disclosed in the Registration Statement (or contained in
the financial  statements or related notes  thereto),  as such may be amended or
supplemented.

                  2.21   Transactions   With   Affiliates.   Subsequent  to  the
respective dates as of which information is given in the Registration  Statement
and  Prospectus  or if the  Prospectus  is  not in  existence  the  most  recent
Preliminary Prospectus, and except as may otherwise be indicated or contemplated
herein or therein,  (a) the Company has not entered into any transaction with an
"affiliate" of the Company, as defined in the Act and the Rules and Regulations,
or (b) declared,  paid or made any dividend or distribution of any kind on or in
connection  with any class of its  capital  stock,  and (c) the  Company  has no
knowledge  of any  transaction  between  any  affiliate  of the  Company and any
significant  customer or supplier of the Company,  except in its ordinary course
of business.

                  2.22   Insurance.   Except  as  otherwise   set  forth  in  or
contemplated  by the  Registration  Statement  and  Prospectus,  the  Company is
insured by insurers of recognized financial  responsibility  against such losses
and risks and in such  amounts as are prudent and  customary  in the business in
which it is engaged,  including without limitation products liability insurance;
the Company has not been refused any insurance  coverage  sought or applied for;
and the Company  has no reason to believe  that it will not be able to renew its
existing  insurance  coverage  as and when such  coverage  expires  or to obtain
similar  coverage  from  similar  insurers as may be  necessary  to continue its
business at a cost that would not materially and adversely  affect the condition
(financial or otherwise), business prospects, net worth or results of operations
of the Company.

                                        7
<PAGE>
                  2.23 Tax Returns. The Company has filed all foreign,  federal,
state and local  tax  returns  that are  required  to be filed or has  requested
extensions  thereof  and has paid all  taxes  required  to be paid by it and any
other  assessment,  fine or penalty levied against it, to the extent that any of
the foregoing is due and payable or adequate  accruals have been set up to cover
any such unpaid taxes,  except for any such assessment,  fine or penalty that is
currently being contested in good faith.

                  2.24 Political Contributions.  The Company has not directly or
indirectly,  (a) made any  unlawful  contribution  to any  candidate  for public
office, or failed to disclose fully any contribution in violation of law, or (b)
made any payment to any federal,  state, local, or foreign  governmental officer
or official, or other person charged with similar public or quasi-public duties,
other than  payments  required or permitted by the laws of the United  States or
any other such jurisdiction.

                  2.25    Relationships    with    Customers,    Suppliers   and
Manufacturers.  The Company does not currently  have any written  contracts with
any of its customers, suppliers and manufacturers.  The Company is in compliance
with all oral agreements with its customers,  suppliers and  manufacturers.  The
Company  has not  received  notice  from  any of its  customers,  suppliers  and
manufacturers alleging any breach of contract, representation or warranty which,
in the  aggregate,  would  have  a  material  adverse  effect  on the  financial
condition or operations results of the Company.

                  2.26  Investment   Company  Act.  The  Company   conducts  its
operations in a manner that does not subject it to registration as an investment
company  under  the  Investment  Company  Act  of  1940,  as  amended,  and  the
transactions contemplated by this Agreement will not cause the Company to become
an investment  company subject to registration  under the Investment Company Act
of 1940, as amended.


                                   SECTION 3.
                    Purchase, Sale and Delivery of the Shares

                  3.1   Purchase   of  Firm   Shares.   On  the   basis  of  the
representations,  warranties,  agreements  and  covenants  herein  contained and
subject to the terms and  conditions  herein set forth,  the  Company  agrees to
issue and sell to each of the Underwriters  named in Schedule I hereto, and each
of the  Underwriters,  severally  and not jointly,  agrees to purchase  from the
Company,  at a purchase price of $____ per Share,  the number of Firm Shares set
forth opposite the name of such  Underwriter  in Schedule 1 hereto.  The Company
will  make one or more  certificates  for  Common  Stock  constituting  the Firm
Shares,  in  definitive  form  and in such  denomination  or  denominations  and
registered in such name or names as the Representative shall request upon notice
to the Company at least 48 hours prior to the Firm Closing  Date,  available for
checking and  packaging by the  Representative  at the offices of the  Company's
transfer agent or registrar (or the  correspondent or the agent of the Company's
transfer  agent or  registrar) at least 24 hours prior to the Firm Closing Date.
Payment for the Firm Shares shall be made by bank wire payable in same day funds
to the  order of the  Company  drawn to the  order of the  Company  for the Firm
Shares,  against  delivery  of  certificates  therefor  to  the  Representative.
Delivery of the documents, certificates and opinions

                                        8
<PAGE>
described  in Section 6 of this  Agreement,  the Firm Shares and payment for the
Firm Shares and the Option Shares shall be made at the offices of Spelman & Co.,
Inc.,  2355 Northside  Drive,  Suite 200, San Diego,  California  92108, at 9:00
a.m.,  San Diego time,  on the third full business day following the date hereof
(on the fourth full business day if this  Agreement is executed after 1:30 p.m.,
Arizona time), or at such other places,  time or date as the  Representative and
the Company may agree upon or as the  Representative  may determine  pursuant to
Section 9 hereof,  such time and date of delivery  against  payment being herein
referred to as the "Firm Closing Date."

                  3.2  Over-Allotments;   Option  Shares.  For  the  purpose  of
covering any over-allotments in connection with the distribution and sale of the
Firm Shares as contemplated by the Prospectus,  the Company hereby grants to you
on behalf of the several  Underwriters an option to purchase,  severally and not
jointly,  the Option Shares. The purchase price to be paid for any Option Shares
shall be the same price per share as the price per Share for the Firm Shares set
forth above in Section 3.1,  plus,  if the purchase and sale of any Option Share
takes place after the Firm  Closing  Date and after the Common  Stock is trading
"ex-dividend,"  an amount  equal to the  dividends  payable on the Common  Stock
contained in such Option  Shares.  The option granted hereby may be exercised in
the manner  described below as to all or any part of the Option Shares from time
to  time  within  forty-five  days  after  the  date  of  the  Prospectus.   The
Underwriters  shall not be under any  obligation  to purchase  any of the Option
Shares prior to the exercise of such option. The Representative may from time to
time  exercise  the  option  granted  hereby by giving  notice in  writing or by
telephone  (confirmed  in writing) to the Company  setting  forth the  aggregate
number of Option Shares as to which the several Underwriters are then exercising
the option and the date and time for  delivery  of and  payment  for such Option
Shares.  Any such date of delivery shall be determined by the Representative but
shall not be earlier than two business  days or later than seven  business  days
after such  exercise of the option and, in any event,  shall not be earlier than
the Firm Closing Date. The time and date set forth in such notice, or such other
time on such other date as the  Representative and the Company may agree upon or
as the  Representative  may  determine  pursuant to Section 9 hereof,  is herein
called the "Option  Closing Date" with respect to such Option Shares.  Upon each
exercise of the option as provided  herein,  subject to the terms and conditions
herein set forth,  the Company  shall  become  obligated  to sell to each of the
several Underwriters,  and each of the Underwriters  (severally and not jointly)
shall become obligated to purchase from the Company,  the same percentage of the
total number of the Option Shares as to which the several  Underwriters are then
exercising  the option as such  Underwriter  is  obligated  to  purchase  of the
aggregate  number of Firm  Shares,  as  adjusted by the  Representative  in such
manner  as it deems  advisable  to avoid  fractional  shares.  If the  option is
exercised  as to  all  or  any  portion  of  the  Option  Shares,  one  or  more
certificates for the Common Stock contained in such Option Shares, in definitive
form,  and payment  therefore,  shall be delivered on the related Option Closing
Date in the manner, and upon the terms and conditions, set forth in Section 3.1,
except that reference therein to the Firm Shares and the Firm Closing Date shall
be deemed,  for purposes of this Section 3.2, to refer to such Option Shares and
Option Closing Date, respectively.  No Option Shares shall be required to be, or
be, sold and delivered unless the Firm Shares have been, or simultaneously  are,
sold and delivered as provided in this Agreement.

                                        9
<PAGE>
                  3.3  Default by an  Underwriter.  It is  understood  that you,
individually and not as the Representative,  may (but shall not be obligated to)
make payment on behalf of any Underwriter or Underwriters  for any of the Shares
to be purchased  by such  Underwriter  or  Underwriters.  No such payment  shall
relieve such  Underwriter or Underwriters  from any of its or their  obligations
hereunder.


                                   SECTION 4.
                          Offering by the Underwriters

         Upon payment by the  Underwriters  of the  purchase  price of $____ per
Share and the  Company's  authorization  of the release of the Firm Shares,  the
several Underwriters shall offer the Firm Shares for sale to the public upon the
terms  set forth in the  Prospectus.  The  Representative  may from time to time
thereafter  change the public  offering  prices and other selling terms.  If the
option set forth in Section 3.2 of this  Agreement is  exercised,  then upon the
Company's  authorization  of  the  release  of the  Option  Shares  the  several
Underwriters  shall offer such Shares for sale to the public upon the  foregoing
terms.


                                   SECTION 5.
                            Covenants of the Company

         Except as otherwise stated below, the Company covenants and agrees with
each of the Underwriters that:

                  5.1 Company's Best Efforts to Cause Registration  Statement to
Become  Effective.   The  Company  will  use  its  best  efforts  to  cause  the
Registration  Statement,  if not  effective  at the  time of  execution  of this
Agreement,  and any  amendments  thereto,  to become  effective  as  promptly as
possible. If required, the Company will file the Prospectus and any amendment or
supplement  thereto with the Commission in the manner and within the time period
required  by Rule  424(b)  under  the Act.  During  any time  when a  prospectus
relating  to the Common  Stock is required to be  delivered  under the Act,  the
Company (a) will comply with all requirements imposed upon it by the Act and the
Rules and Regulations to the extent necessary to permit the continuance of sales
of or dealings in the Common Stock in accordance with the provisions  hereof and
of the Prospectus,  as then amended or supplemented,  and (b) will not file with
the  Commission  the  prospectus  or the  amendment  referred  to in the  second
sentence of Section 2.1 hereof,  any amendment or supplement to such  prospectus
or  any  amendment  to  the   Registration   Statement   unless  and  until  the
Representative has been advised of such proposed filing, has been furnished with
a copy for a  reasonable  period of time prior to the proposed  filing,  and has
given its consent to such filing,  which shall not be  unreasonably  withheld or
delayed.

                                       10
<PAGE>
                  5.2 Preparation and Filing of Amendments and Supplements.  The
Company will prepare and file with the Commission,  in accordance with the Rules
and  Regulations  of  the  Commission,  promptly  upon  written  request  by the
Representative  or  counsel  for  the  Representative,  any  amendments  to  the
Registration  Statement or amendments or supplements to the Prospectus  that may
be reasonably  necessary or advisable in connection with the distribution of the
Shares by the several Underwriters, and the Company will use its best efforts to
cause any such amendment to the Registration  Statement to be declared effective
by the  Commission  as  promptly  as  possible.  The  Company  will  advise  the
Representative,  promptly after receiving  notice thereof,  of the time when the
Registration  Statement  or any  amendment  thereto  has been filed or  declared
effective or the  Prospectus  or any  amendment or  supplement  thereto has been
filed and will provide evidence  satisfactory to the Representative of each such
filing or effectiveness.

                  5.3  Notice  of Stop  Orders.  The  Company  will  advise  the
Representative  promptly after receiving  notice or obtaining  knowledge of: (a)
the issuance by the Commission of any stop order suspending the effectiveness of
the Registration  Statement or any amendment thereto, or any order preventing or
suspending  the  use of any  Preliminary  Prospectus  of the  Prospectus  or any
amendment or supplement thereto;  (b) the suspension of the qualification of the
Shares  for  offering  or  sale  in  any  jurisdiction;   (c)  the  institution,
threatening or contemplation of any proceeding for any such purpose;  or (d) any
request made by the  Commission  for amending the  Registration  Statement,  for
amending or  supplementing  the  Prospectus or for additional  information.  The
Company will use its best efforts to prevent the issuance of any such stop order
and,  if any such  stop  order is issued to obtain  the  withdrawal  thereof  as
promptly as possible.

                  5.4 Blue Sky  Qualification.  The  Company  will  arrange  and
cooperate with counsel to the Representative for the qualification of the Shares
for  offering  and  sale  under  the   securities  or  blue  sky  laws  of  such
jurisdictions  as the  Representative  may  designate  and  will  continue  such
qualifications  in  effect  for as  long as may be  necessary  to  complete  the
distribution of the Shares; provided,  however, that in connection therewith the
Company shall not be required to qualify as a foreign  corporation or to execute
a general consent to service of process in any jurisdiction.

                  5.5  Post-Effective   Amendments.  If,  at  any  time  when  a
prospectus relating to the Shares is required to be delivered under the Act, any
event  occurs  as  a  result  of  which  the  Prospectus,  as  then  amended  or
supplemented,  would include any untrue  statement of a material fact or omit to
state a material  fact  necessary  in order to make the  statements  therein not
misleading,  in the light of the circumstances under which they were made, or if
for any other  reason it is  necessary  at any time to amend or  supplement  the
Prospectus to comply with the Act or the Rules or Regulations,  the Company will
promptly  notify the  Representative  thereof and,  subject to Section 3 hereof,
will  prepare  and file  with  the  Commission,  at the  Company's  expense,  an
amendment to the  Registration  Statement or an amendment or  supplement  to the
Prospectus that corrects such statement or omission or effects such compliance.

                                       11
<PAGE>
                  5.6  Delivery  of  Prospectuses.  The  Company  will,  without
charge,  provide (a) to the Representative and to counsel for the Representative
a signed copy of the Registration Statement originally filed with respect to the
Shares and each amendment thereto (in each case including exhibits thereto), (b)
to each other  Underwriter  so requesting in writing,  a conformed  copy of such
Registration Statement and each amendment thereto (in each case without exhibits
thereto) and (c) so long as a  prospectus  relating to the Shares is required to
be delivered under the Act, as many copies of each Preliminary Prospectus or the
Prospectus  or any  amendment or supplement  thereto as the  Representative  may
reasonably request.

                  5.7 Section  11(a)  Financials.  The Company  will, as soon as
practicable  but in any event not later than 90 days  after the  period  covered
thereby,   make  generally   available  to  its  security  holders  and  to  the
Representative  a  consolidated  earnings  statement  of  the  Company  and  its
subsidiaries  that satisfies the provisions of Section 11(a) of the Act and Rule
158 thereunder covering a twelve-month period beginning not later than the first
day of the Company's  fiscal  quarter next  following the effective  date of the
Registration Statement.

                  5.8  Application  of Proceeds.  The Company will apply the net
proceeds  from  the  sale of the  Shares  as set  forth  in the  Prospectus  and
Registration  Statement  and will not take any  action  that  would  cause it to
become an  investment  company  under the  Investment  Company  Act of 1940,  as
amended.

                  5.9 Sales of  Securities.  The Company  will not,  directly or
indirectly,  without the prior  written  consent of the  Representative,  offer,
sell, grant any option to purchase or otherwise  dispose (or announce any offer,
sale,  grant of any option to  purchase or other  disposition)  of any shares of
Common Stock or any securities  convertible into, or exchangeable or exercisable
for,  shares of Common  Stock  for a period of one year  after the date  hereof,
except (a) to the Underwriters pursuant to this Agreement and (b) options to any
person  pursuant to and in accordance with the Company's 1996 Stock Option Plan,
as such plan is in effect on the date hereof,  and provided that such person has
delivered to the Representative  the agreement  described in Section 7.7 of this
Agreement.

                  5.10 Application to Nasdaq National  Market.  The Company will
cause the Common Stock to be duly included for quotation on the Nasdaq  National
Market  prior to the  Closing  Date.  The Company  will use its best  efforts to
ensure  that the Common  Stock  remains  included  for  quotation  on the Nasdaq
National  Market  following the Closing Date for a period of not less than three
years.

                  5.11 Reports to  Stockholders.  So long as any Common Stock is
outstanding until five years after the Closing Date, the Company will furnish to
the Representative (a) as soon as available a copy of each report of the Company
mailed to  stockholders  and filed with the Commission and (b) from time to time
such  other  information  concerning  the  Company  as  the  Representative  may
reasonably request.

                                       12
<PAGE>
                  5.12  Delivery of Documents.  At or prior to the Closing,  the
Company  will  deliver  to the  Representative  true and  correct  copies of the
certificate of incorporation of the Company and all amendments thereto, all such
copies to be  certified by the  Secretary  of State of the State of Delaware,  a
good standing certificate from the Secretary of State of Delaware, dated no more
than five business days prior to the Closing  Date;  true and correct  copies of
the bylaws of the Company, as amended, certified by the Secretary of the Company
and true and correct  copies of the minutes of all meetings of the directors and
stockholders  of the  Company  held prior to the  Closing  Date which in any way
relate to the subject matter of this Agreement.

                  5.13 Underwriters'  Warrant.  On or prior to the Closing Date,
the Company shall  deliver to the  Representative  warrants (the  "Underwriter's
Warrants"),  at an aggregate purchase price of $100, to purchase Shares equal to
10% of the Firm Shares sold in the Offering,  which Underwriter's Warrants shall
be  exercisable  for a per Share  exercise  price equal to 120% of the per Share
public offering price of the Firm Shares.

                  5.14 Cooperation With  Representative's Due Diligence.  At all
times  prior  to  the  Closing  Date,   the  Company  will  cooperate  with  the
Representative in such  investigation as the Representative may make or cause to
be made  of all the  properties,  business  and  operations  of the  Company  in
connection  with the purchase and public  offering of the Shares and the Company
will  make  available  to  the  Representative  in  connection   therewith  such
information in its possession as the Representative may reasonably request.

                  5.15 Stock Transfer Agent. The Company has appointed Corporate
Stock Transfer,  Denver,  Colorado,  as Transfer Agent for the Common Stock. The
Company will not change or terminate such  appointment for a period of two years
from the  effective  date without  first  obtaining  the written  consent of the
Representative, which consent shall not be unreasonably withheld.

                  5.16 Publicity.  Prior to the Firm Closing Date, or the Option
Closing  Date, as the case may be, the Company shall not issue any press release
or other communication directly or indirectly and shall hold no press conference
with respect to the Company,  its financial  condition,  results of  operations,
business,  properties,  assets,  liabilities  and any of them, or this offering,
without the prior written consent of the  Representative.  If at any time during
the 90 day period after the Registration Statement becomes effective, any rumor,
publication  or event  relating to or  affecting  the  Company  shall occur as a
result of which in the  opinion of the  Representative  the market  price of the
Common  Stock has been or is likely to be  materially  affected,  regardless  of
whether  such  rumor,  publication  or event  necessitates  a  supplement  to or
amendment of the  Prospectus,  the Company will,  after written  notice from the
Representative, evaluate the propriety of disseminating a press release or other
public statement  reasonably  acceptable to the  Representative and its counsel,
commenting on such rumor, publication or event.

                  5.17 Forecasts and Projections. For a period of two years from
the effective date of the Registration Statement,  the Company shall provide the
Representative  with routine internal forecasts if any such reports are prepared
by the Company for dissemination to the public.

                                       13
<PAGE>
                  5.18 Key Man Insurance. The Company will maintain for a period
of at least five (5) years,  Key Man  Insurance on Messrs.  Nikzad and Belfer in
the amount of $1,000,000  each. The  Representative  reserves the right to write
the above  policy at the next  renewal  date  thereof  providing it can do so on
terms no less favorable to the Company.

                  5.19 Registration and Transfer of Trademarks. The Company will
register the  trademark  "M.D.  Labs" and all other  trademarks  material to the
operation of its business. The Company shall transfer and assign or caused to be
transferred  and  assigned  to it,  all  trademarks  held  or used by any of its
subsidiaries or affiliated entities.


                                   SECTION 6.
                                    Expenses

                  6.1  Offering  Expenses.  The Company will pay upon demand all
costs and expenses  incident to the  performance  of the  Company's  obligations
under this Agreement,  whether or not the transactions  contemplated  herein are
consummated  or this  Agreement  is  terminated  pursuant  to Section 11 hereof,
including  all  costs  and  expenses  incident  to (a)  the  printing  or  other
production of documents with respect to the transactions, including any costs of
printing the Registration  Statement originally filed with respect to the Shares
and any amendment thereto, any Preliminary Prospectus and the Prospectus and any
amendment  or  supplement   thereto,   this   Agreement,   the  Agreement  Among
Underwriters, the Selected Dealer Agreement, and any blue sky memoranda, (b) all
arrangements  relating  to the  delivery  to the  Underwriters  of copies of the
foregoing documents, (c) the fees and disbursements of counsel,  accountants and
any other experts or advisors retained by the Company, (d) preparation, issuance
and  delivery to the  Underwriters  of any  certificates  evidencing  the Common
Stock, including transfer agent's and registrar's fees, (e) the qualification of
the Shares under state  securities and blue sky laws,  including filing fees and
fees and disbursements of counsel for the Representative  relating thereto,  (f)
the filing fees of the  Commission  and the National  Association  of Securities
Dealers,  Inc. relating to the Shares, (g) any listing fees for the quotation of
the Common Stock on the Nasdaq National Market, (h) one-half the cost of placing
"tombstone  advertisements"  in any  publications  which may be  selected by the
Representative  (provided  that any such cost in excess of $5,000 shall  require
the  consent  of both the  Company  and the  Representative),  and (i) all other
advertising  that has been  approved in advance by the  Company  relating to the
offering of the Shares (other than as shall have been  specifically  approved in
writing by the Representative to be paid for by the  Underwriters).  In addition
to  the  foregoing,   the  Company  agrees  to  pay  to  the   Representative  a
non-accountable  expense  allowance  of 3% of the gross amount to be raised from
the sale of the Shares  hereunder,  payable at the Closing(s),  of which $25,000
has already been paid by the Company in connection  with this  offering.  If the
sale of the Shares provided for herein is not consummated  because any condition
to the  obligations  of the  Underwriters  set forth in  Section  7 (other  than
Section  7.6) hereof is not  satisfied,  because this  Agreement  is  terminated
pursuant to Section 11 hereof or because of any failure, refusal or inability on
the part of the Company to perform all obligations and satisfy all conditions on
its part to be  performed  or  satisfied  hereunder  other  than by  reason of a
default by any

                                       14
<PAGE>
of the Underwriters,  the Company will reimburse the Underwriters severally upon
demand for all out-of-pocket expenses (including counsel fees and disbursements)
that shall have been reasonably incurred by them in connection with the proposed
purchase and sale of the Shares.  The Company shall in no event be liable to any
of the  Underwriters  for the loss of anticipated  profits from the transactions
covered by this Agreement.

                  6.2 Interim  Indemnification.  The  Company  agrees that as an
interim measure during the pendency of any claim, action, investigation, inquiry
or other  proceeding  described  in Section 8.1 hereof,  it will  reimburse  the
Underwriters  on a monthly  basis  for all  reasonable  legal or other  expenses
incurred in connection with  investigating or defending any such claim,  action,
investigation,  inquiry or other  proceeding,  notwithstanding  the absence of a
judicial  determination as to the propriety and  enforceability of the Company's
obligation to reimburse the  Underwriters  for such expenses and the possibility
that  such  payments  might  later be held to have been  improper  by a court of
competent  jurisdiction.  To the  extent  that  any such  interim  reimbursement
payment is so held to have been improper, the Underwriters shall promptly return
such payment to the Company together with interest, compounded daily, determined
on the basis of the prime rate (or other  commercial  lending rate for borrowers
of the  highest  credit  standing)  listed  from time to time in THE WALL STREET
JOURNAL  which  represents  the  base  rate  on  corporate  loans  posted  by  a
substantial  majority  of the  nation's  thirty (30)  largest  banks (the "Prime
Rate").  Any  such  interim  reimbursement  payments  which  are not made to the
Underwriters  within thirty (30) days of a request for reimbursement  shall bear
interest at the Prime Rate from the date of such request.

         The  Underwriters  severally  and not jointly agree that, as an interim
measure  during the  pendency of any claim,  action,  investigation,  inquiry or
other  proceeding  described  in Section 8.2  hereof,  they will  reimburse  the
Company on a monthly basis for all reasonable  legal or other expenses  incurred
in  connection  with   investigating  or  defending  any  such  claim,   action,
investigation,  inquiry or other  proceeding,  notwithstanding  the absence of a
judicial   determination  as  to  the  propriety  and   enforceability   of  the
Underwriters'  obligation  to  reimburse  the Company for such  expenses and the
possibility  that such  payments  might later be held to have been improper by a
court  of  competent   jurisdiction.   To  the  extent  that  any  such  interim
reimbursement  payment  is so held to have  been  improper,  the  Company  shall
promptly  return  such  payment  to the  Underwriters  together  with  interest,
compounded  daily,  determined on the basis of the Prime Rate.  Any such interim
reimbursement payments which are not made to the Company within thirty (30) days
of a request for  reimbursement  shall bear  interest at the Prime Rate from the
date of such request.

                                       15
<PAGE>
                                   SECTION 7.
                   Conditions of the Underwriters' Obligations

         The obligations of the several Underwriters to purchase and pay for the
Firm Shares shall be subject,  unless waived by the  Representative  in its sole
discretion, to the accuracy of the representations and warranties of the Company
contained  herein as of the date  hereof and as of the Firm  Closing  Date as if
made on and as of the Firm Closing  Date,  to the accuracy of the  statements of
the  Company's   officers  made  pursuant  to  the  provisions  hereof,  to  the
performance by the Company of its covenants and agreements  hereunder and to the
following additional conditions:

                  7.1   Effectiveness   of   Registration   Statement.   If  the
Registration  Statement or any amendment thereto filed prior to the Firm Closing
Date has not been  declared  effective as of the time of execution  hereof,  the
Registration  Statement or such amendment shall have been declared effective not
later than 11 a.m.,  California  time, on the date on which the amendment to the
Registration  Statement  originally  filed with  respect to the Shares or to the
Registration Statement, as the case may be, containing information regarding the
initial public  offering price of the Shares has been filed with the Commission,
or  such  later  time  and  date  as  shall  have  been   consented  to  by  the
Representative;  if required,  the  Prospectus  and any  amendment or supplement
thereto  shall have been filed with the  Commission in the manner and within the
time period required by Rule 424(b) under the Act; no stop order  suspending the
effectiveness of the Registration  Statement or any amendment thereto shall have
been issued,  and no proceedings  for that purpose shall have been instituted or
threatened or, to the knowledge of the Company or the  Representative,  shall be
contemplated  by the  Commission;  and the Company  shall have complied with any
request of the  Commission  for  additional  information  (to be included in the
Registration  Statement  or the  Prospectus  or  otherwise)  to  the  reasonable
satisfaction of counsel for the underwriters.

                  7.2 Opinion of Counsel. The Representative shall have received
an opinion,  dated the Firm Closing Date, of Quarles & Brady, Phoenix,  Arizona,
counsel for the Company, to the effect that:

                           (a)  the  Company  has  been  duly  organized  and is
validly  existing as a corporation  in good standing under the laws of the State
of Delaware,  and duly qualified to transact  business as a foreign  corporation
and is in good  standing  under  the laws of all other  jurisdictions  where the
ownership or leasing of its  properties or the conduct of its business  requires
such qualification, except where the failure to be so qualified would not have a
material adverse effect on the Company;

                           (b) the  Company  has the  corporate  power to own or
lease its properties;  to conduct its business as described in the  Registration
Statement and the Prospectus;  to enter into this Agreement and to carry out all
of the terms and provisions hereof to be carried out by it;

                           (c) the Company has an  authorized  capital  stock as
set forth under the heading  "CAPITALIZATION" in the Prospectus;  effective upon
the Closing all of the Company's

                                       16
<PAGE>
all of the shares have been duly  authorized  and  validly  issued and are fully
paid and  nonassessable;  the shares have been duly  authorized by all necessary
corporate action of the Company,  and, when issued and delivered to and paid for
pursuant  to  this   Agreement,   will  be  validly   issued,   fully  paid  and
nonassessable;  the shares have been duly authorized for quotation on the Nasdaq
National  Market;  no holders  of  outstanding  shares of  capital  stock of the
Company are entitled as such to any  preemptive or other rights to subscribe for
any of the Shares;  and no holders of  securities of the Company are entitled to
have such securities registered under the Registration Statement;

                           (d) the capital stock of the Company conforms,  as to
legal matters,  to the statements  set forth under the heading  "DESCRIPTION  OF
SECURITIES" in the Prospectus in all material respects;

                           (e) the execution and delivery of this Agreement have
been duly authorized by all necessary  corporate  action of the Company and this
Agreement is a valid and binding  obligation of the Company  except as rights to
indemnity and  contribution  thereunder may be limited by applicable  federal or
state  securities  laws and  except as such  enforceability  may be  limited  by
bankruptcy, insolvency, reorganization, moratorium or similar laws affecting the
enforceability of creditors' rights generally and subject to general  principles
of equity.

                           (f) no legal or governmental  proceedings are pending
to which the  Company  is a party or to which the  property  of the  Company  is
subject that are required to be described in the  Registration  Statement or the
Prospectus  and are not described  therein,  and, to the best  knowledge of such
counsel,  no such proceedings  have been threatened  against the Company or with
respect to any of its  properties  that can  reasonably  be expected  to, or, if
determined  adversely to the Company,  would,  in any individual  case or in the
aggregate,  result in any material  adverse  change in the  business,  financial
condition or results of operations of the Company;

                           (g) no contract  or other  document is required to be
described in the  Registration  Statement or the Prospectus or to be filed as an
exhibit to the Registration  Statement that is not described therein or filed as
required;

                           (h) the issuance,  offering and sale of the Shares by
the Company  pursuant to this Agreement,  the compliance by the Company with the
other   provisions  of  this  Agreement  and  the   consummation  of  the  other
transactions  herein   contemplated  do  not  require  the  consent,   approval,
authorization,  registration  or  qualification  of  or  with  any  governmental
authority,  except such as have been obtained and such as may be required  under
state  securities  or blue sky laws,  or conflict  with or result in a breach or
violation of any of the terms and  provisions of, or constitute a default under,
any indenture,  mortgage, deed of trust, lease or other agreement or instrument,
known to such  counsel,  to which the Company is a party or by which the Company
or any of its  properties are bound,  or the  Certificate  of  Incorporation  or
Bylaws of the Company,  or any statute or any judgment,  decree,  order, rule or
regulation of any court or other governmental  authority or any arbitrator known
to such counsel and applicable to the Company;

                                       17
<PAGE>
                           (i) the Registration Statement is effective under the
Act; any required filing of the Prospectus pursuant to Rule 424(b) has been made
in the manner and within the time period  required by Rule  424(b);  and no stop
order  suspending  the  effectiveness  of  the  Registration  Statement  or  any
amendment thereto has been issued by the Commission, and no proceedings for that
purpose  have  been  instituted  or,  to the  knowledge  of  such  counsel,  are
threatened or contemplated by the Commission;

                           (j) the Registration Statement and the Prospectus and
each  amendment or  supplement  thereto (in each case,  other than the financial
statements and other financial and statistical information contained therein, as
to which such counsel need express no opinion) comply as to form in all material
respects  with  the  applicable  requirements  of the  Act  and  the  Rules  and
Regulations;

                           (k) the Company is not required,  and, if the Company
uses the proceeds of the sale of the Firm Shares and the Option Shares solely as
described  in the  Prospectus,  will not be  required as a result of the sale of
such Shares to be registered as an investment  company within the meaning of the
Investment Company Act of 1940, as amended; and

                           (l) such  counsel  shall also state that they have no
reason to believe that the  Registration  Statement,  as of its effective  date,
contained  any  untrue  statement  of a  material  fact or  omitted to state any
material fact required to be stated  therein or necessary to make the statements
therein not  misleading  or that the  Prospectus,  as of its date or the date of
such  opinion,  included or includes any untrue  statement of a material fact or
omitted  or  omits  to  state a  material  fact  necessary  in order to make the
statements  therein,  in light of the circumstances  under which they were made,
not  misleading;  provided  that in each case such  counsel need not express any
opinion as to the  financial  statements  and other  financial  and  statistical
information contained therein.

In rendering any such  opinion,  such counsel may rely as to matters of fact, to
the extent such counsel deems proper, on certificates of responsible officers of
the Company and public  officials.  The foregoing  opinion may be limited to the
laws of the  United  States,  the laws of the State or Arizona  and the  General
Corporation  Law of the State of Delaware.  With  respect to certain  regulatory
compliance  issues,  such  counsel  may  rely on the  opinion  of Bass &  Ullman
described in Section  7.3.  References  to the  Registration  Statement  and the
Prospectus in this Section 7.2 shall include any amendment or supplement thereto
at the date of such opinion. Such counsel shall permit Luce, Forward, Hamilton &
Scripps to rely upon such opinion in rendering its opinion in Section 7.4.

                  7.3 Opinion of Special Counsel.  The Representative shall have
received an opinion dated the Firm Closing Date, of Bass & Ullman, New York, New
York, Special Counsel for the Company, to the effect that:

                           (a) The  Company's  advertisements  and packaging for
its products comply in all material  respects with applicable  federal and state
regulations.

                                       18
<PAGE>
                           (b)  The  Company  has  received  all   certificates,
authorizations and permits issued by the appropriate  federal,  state or foreign
regulatory  authorities  necessary  for the conduct of its  business,  including
without  limitation  the  Food  and  Drug  Administration,   the  Federal  Trade
Commission, the Consumer Product Safety Commission, the United States Department
of  Agriculture,   the  United  States  Postal  Service  and  the  Environmental
Protection  Agency,  and the Company has not received any notice of  proceedings
relating  to  the   revocation  or   modification   of  any  such   certificate,
authorization or permit which, singly or in the aggregate,  if the subject of an
unfavorable  decision,  ruling or finding,  would  result in a material  adverse
change in the condition (financial or otherwise),  business prospects, net worth
or results of operations of the Company,  except as described in or contemplated
by the  Registration  Statement.  Each  approval,  registration,  qualification,
license,  permit, consent,  order,  authorization,  designation,  declaration or
filing by or with any regulatory,  administrative or other  governmental body or
agency necessary in connection with the execution and delivery by the Company of
this Agreement and the  consummation of the  transactions  contemplated has been
obtained or made and each is in full force and effect.

                           (c) The  Company  is not in  violation  of any  laws,
ordinances,  governmental  rules or  regulations  relating to federal,  state or
foreign  regulatory  authorities  necessary  for the  conduct  of its  business,
including without limitation the Food and Drug Administration, the Federal Trade
Commission, the Consumer Product Safety Commission, the United States Department
of  Agriculture,   the  United  States  Postal  Service  and  the  Environmental
Protection  Agency which would have a material  adverse  effect on the condition
(financial or otherwise), business, properties,  prospects, net worth or results
of operations of the Company.

                           (d) such  counsel  shall also state that they have no
reason to believe that the provisions of the  Registration  Statement  under the
captions entitled "PROSPECTUS SUMMARY -- The Company",  "RISK FACTORS -- Absence
of Clinical Studies and Scientific Review", "-- Effect of Discontinued Product",
"-- Difficulty in Product  Positioning",  "-- Uncertainty and Potential Negative
Effects of Government Regulations;  Non-Compliance," and "BUSINESS "-- Products"
and " -- Proprietary  Rights:  Trade Name,  Trademarks and Copyrights",  and "--
Government  Regulation" as of its effective date, contained any untrue statement
of a material  fact or omitted to state any material  fact required to be stated
therein or necessary to make the  statements  therein not misleading or that the
Prospectus, as of its date or the date of such opinion, included or includes any
untrue statement of a material fact or omitted or omits to state a material fact
necessary in order to make the statements therein, in light of the circumstances
under  which they were made,  not  misleading;  provided  that in each case such
counsel need not express any opinion as to the  financial  statements  and other
financial and statistical information contained therein.

                  7.4 Review by and  Opinion of  Representative's  Counsel.  The
Representative  shall have received an opinion,  dated the Firm Closing Date, of
Luce,  Forward,  Hamilton & Scripps LLP,  counsel for the  Representative,  with
respect to certain matters as the Representative may reasonably require, and the
Company shall have furnished to such counsel such documents and  certificates as
they may  reasonably  request for the purpose of enabling them to pass upon such
matters.

                                       19
<PAGE>
                  7.5  Accountant's   Letter.  The  Representative   shall  have
received from Coopers & Lybrand L.L.P. a letter or letters dated,  respectively,
the date hereof and the Closing Date, in form and substance  satisfactory to the
Representative, to the effect that:

                           (a) they are independent  accountants with respect to
the Company within the meaning of the Act and the Rules and Regulations;

                           (b)  in  their  opinion,   the  financial  statements
audited by them and included in the  Registration  Statement and the  Prospectus
comply  in  form  in  all  material  respects  with  the  applicable  accounting
requirements of the Act and the related published rules and regulations;

                           (c)  on  the  basis  of  a  reading  of  the  audited
financial  statements of the Company,  for the year ended May 31, 1996,  and the
unaudited  financial  statements of the Company for the period ended [August 31,
1996], and the notes thereto,  carrying out certain specified  procedures (which
do not constitute an audit made in accordance with generally  accepted  auditing
standards)  that  would not  necessarily  reveal  matters of  significance  with
respect to the  comments  set forth in this  paragraph,  a reading of the minute
books of the shareholders,  the board of directors and any committees thereof of
the  Company,  and  inquiries  of  certain  officials  of the  Company  who have
responsibility  for  financial  and  accounting  matters,  nothing came to their
attention that caused them to believe that:

                                       (i)  the  unaudited  condensed  financial
statements  of the  Company  included  in the  Registration  Statement  and  the
Prospectus do not comply in form in all material  respects  with the  applicable
accounting  requirements  of  the  Act  and  the  related  published  rules  and
regulations  thereunder  or  are  not  in  conformity  with  generally  accepted
accounting  principles applied on a basis substantially  consistent with that of
the audited financial statements included in the Registration  Statement and the
Prospectus; and

                                       (ii) at a  specific  date not  more  than
five business  days prior to the date of such letter,  there were any changes in
the  capital  stock or  long-term  debt of the Company or any  decreases  in net
current  assets or  stockholders'  equity of the Company,  in each case compared
with  amounts  shown on the  [August 31,  1996]  balance  sheet  included in the
Registration  Statement and the  Prospectus,  or for the period from [August 31,
1996] to such  specified  date there were any  decreases,  as compared  with the
corresponding period in the preceding year, in net sales, gross profit, selling,
general and administrative  expenses,  employee plans and bonuses, income (loss)
from operations, interest expenses, income (loss) before income taxes, provision
(benefit) for income taxes,  net income (loss) or net income (loss) per share of
the Company,  except in all  instances  for changes,  decreases or increases set
forth in such letter; and

                           (d)  they  have   carried   out   certain   specified
procedures,  not  constituting  an  audit,  with  respect  to  certain  amounts,
percentages  and  financial  information  that  are  derived  from  the  general
accounting records of the Company and are included in the Registration Statement
and

                                       20
<PAGE>
the  Prospectus,  and have  compared  such  amounts,  percentages  and financial
information with such records of the Company and with  information  derived from
such records and have found them to be in agreement,  excluding any questions of
legal interpretation.

         In the  event  that the  letters  referred  to above set forth any such
changes,  decreases  or  increases,  it  shall  be a  further  condition  to the
obligations  of the  Underwriters  that such letters shall be  accompanied  by a
written  explanation of the Company as to the significance  thereof,  unless the
representative deems such explanation unnecessary,  and such changes,  decreases
or  increases  do not,  in the  sole  judgment  of the  Representative,  make it
impractical  or  inadvisable  to proceed  with the  purchase and delivery of the
Shares as contemplated by the Registration  Statement, as amended as of the date
hereof.

         References to the  Registration  Statement  and the  Prospectus in this
Section 7.5 with respect to either  letter  referred to above shall  include any
amendment or supplement thereto at the date of such letter.

                  7.6  Officer's  Certificate.  The  Representative  shall  have
received a  certificate,  dated the Firm Closing  Date, of the president and the
principal financial or accounting officer of the Company to the effect that:

                           (a) the representations and warranties of the Company
in this  Agreement are true and correct as if made on and as of the Firm Closing
Date; the Registration  Statement,  as amended as of the Firm Closing Date, does
not  include  any  untrue  statement  of a  material  fact or omit to state  any
material fact necessary to make the statements therein not misleading,  in light
of the  circumstances in which they were made and the Prospectus,  as amended or
supplemented as of the Firm Closing Date, does not include any untrue  statement
of a material fact or omit to state any material fact necessary in order to make
the statements therein not misleading,  in the light of the circumstances  under
which they were made; and the Company has in all material respects performed all
covenants  and  agreements  and  satisfied  all  conditions  on its  part  to be
performed or satisfied at or prior to the Firm Closing Date;

                           (b) no stop order suspending the effectiveness of the
Registration  Statement  or  any  amendment  thereto  has  been  issued,  and no
proceedings  for that purpose have been instituted or threatened or, to the best
of their knowledge, are contemplated by the Commission; and

                           (c)  subsequent to the  respective  dates as of which
information  is given in the  Registration  Statement  and the  Prospectus,  the
Company has not sustained any material loss or interference with its business or
properties from fire, flood, hurricane,  accident or other calamity,  whether or
not covered by insurance, or from any labor dispute or any legal or governmental
proceeding,  and  there  has  not  been  any  material  adverse  change,  or any
development  involving a prospective  material adverse change,  in the condition
(financial or otherwise), business prospects, net worth or results of operations
of the  Company,  except in each case as  described  in or  contemplated  by the
Prospectus (exclusive of any amendment or supplement thereto).

                                       21
<PAGE>
                  7.7 NASD  Review.  The NASD,  upon  review of the terms of the
public offering of the Firm Shares and Option Shares, shall not have objected to
the Underwriters' participation in such offering.

                  7.8 Lockups. The Representatives shall have received from each
person who owns Common Stock,  or securities  convertible  into Common Stock, an
agreement  to the effect  that such person  will not,  directly  or  indirectly,
without the prior written consent of the  Representative,  offer,  sell or grant
any option to purchase or otherwise dispose (or announce any offer,  sale, grant
of an option to purchase or other  disposition) of any shares of Common Stock or
any securities convertible into, or exchangeable for, shares of Common Stock for
a period of six months.

                  7.9   Due   Diligence   Examination.   The   counsel   to  the
Representative and other persons retained by the Representative to conduct a due
diligence  investigation  with  respect  to the  offering,  shall be  reasonably
satisfied with the results of their respective due diligence investigations.

                  7.10 Blue Sky Qualification.  The Shares shall be qualified in
such states as the  Representative  may reasonably  request  pursuant to Section
5.4, and each such qualification  shall be in effect and not subject to any stop
order or other  proceeding  on the Closing Date or Option  Closing  Date, as the
case may be.

                  7.10 Other Documents.  On or before the Firm Closing Date, the
Representative  and  counsel for the  Representative  shall have  received  such
further certificates, documents or other information as they may have reasonably
requested from the Company.

         All opinions, certificates, letters and documents delivered pursuant to
this  Agreement  will  comply  with  the  provisions  hereof  only if  they  are
reasonably  satisfactory  in all material  respects to the  Representative.  The
Company  shall  furnish  to the  Representative  such  conformed  copies of such
opinions,  certificates,  letters  and  documents  in  such  quantities  as  the
Representative and the counsel to the Representative shall reasonably request.

         The respective  obligations of the several Underwriters to purchase and
pay for any  Option  Shares  shall  be  subject,  in the  Representative's  sole
discretion,  to each of the  foregoing  conditions  to purchase the Firm Shares,
except that all references to the Firm Shares and the Firm Closing Date shall be
deemed to refer to such  Option  Shares and the  related  Option  Closing  Date,
respectively.


                                   SECTION 8.
                        Indemnification and Contribution

                  8.1   Indemnification  by  Company.   The  Company  agrees  to
indemnify  and hold  harmless  each  Underwriter  and each  person,  if any, who
controls any Underwriter  within the meaning of Section 15 of the Act or Section
20 of the  Securities  Exchange  Act of 1934 (the  "Exchange  Act")  against any
losses, claims, damages or liabilities, joint or several, to which such

                                       22
<PAGE>
Underwriter  or such  controlling  person may become  subject under the Act, the
Exchange  Act  or  otherwise,   insofar  as  such  losses,  claims,  damages  or
liabilities (or actions in respect thereof) arise out of or are based upon:

                           (a) any untrue  statement or alleged untrue statement
made by the Company in Section 2 of this Agreement;

                           (b) any untrue  statement or alleged untrue statement
of  any  material  fact  contained  in (i)  the  Registration  Statement  or any
amendment  thereto  or  any  Preliminary  Prospectus  or the  Prospectus  or any
amendment or supplement thereto,  or (ii) any application or other document,  or
any  amendment  or  supplement  thereto,  executed by the Company and based upon
written  information  furnished  by or on  behalf  of the  Company  filed in any
jurisdiction  in order to qualify the Shares  under the  securities  or blue sky
laws  thereof or filed with the  Commission  or any  securities  association  or
securities exchange (each an "Application"); or

                           (c) the omission or alleged  omission to state in the
Registration  Statement or any amendment thereto, any Preliminary  Prospectus or
the  Prospectus  or any amendment or supplement  thereto,  or any  Application a
material fact required to be stated  therein or necessary to make the statements
therein not misleading in light of the circumstances in which they are made, and
will reimburse,  as incurred,  each Underwriter and each such controlling person
for any legal or other expenses  reasonably incurred by such Underwriter or such
controlling  person in  connection  with  investigating,  defending  against  or
appearing as a  third-party  witness in  connection  with any such loss,  claim,
damage,  liability or action;  provided,  however,  that the Company will not be
liable in any such  case to the  extent  that any such  loss,  claim,  damage or
liability  arises out of or is based upon any untrue statement or alleged untrue
statement or omission or alleged omission made in such registration statement or
any amendment  thereto,  any  Preliminary  Prospectus  or the  Prospectus or any
amendment or  supplement  thereto,  or any  Application  in reliance upon and in
conformity with written information  furnished to the Company by any Underwriter
through the Representative  specifically for use therein;  and provided further,
that the Company will not be liable to any Underwriter or any person controlling
such  Underwriter  with respect to any such untrue statement or omission made in
any Preliminary Prospectus that is corrected in the Prospectus (or any amendment
or supplement  thereto) if the person asserting any such loss, claim,  damage or
liability  purchased  Shares from such  Underwriter  but was not sent or given a
copy of the  Prospectus (as amended or  supplemented),  other than the documents
incorporated by reference therein at or prior to the written confirmation of the
sale of such  Shares  to such  person in any case  where  such  delivery  of the
Prospectus  (as amended or  supplemented)  is  required by the Act,  unless such
failure to deliver the Prospectus (as amended or  supplemented)  was a result of
noncompliance by the Company with Section 5.5 of this Agreement.  This indemnity
agreement  will be in addition to any liability  which the Company may otherwise
have.  The  Company  will  not,  without  the  prior  written  consent  of  each
Underwriter, settle or compromise or consent to the entry of any judgment in any
pending or  threatened  claim,  action,  suit or  proceeding in respect of which
indemnification  may be sought hereunder (whether or not such Underwriter or any
person who controls such Underwriter within the meaning of Section 15 of the Act
or Section 20 of the Exchange Act is a party to such

                                       23
<PAGE>
claim,  action,  suit or  proceeding),  unless such  settlement,  compromise  or
consent  includes an  unconditional  release of such  Underwriter  and each such
controlling person from all liability arising out of such claim, action, suit or
proceeding.

                  8.2  Indemnification  by  Underwriters.  Each Underwriter will
indemnify  and hold  harmless the Company,  each of its  directors,  each of its
officers who signed the  Registration  Statement  and each  person,  if any, who
controls  the Company  within the meaning of Section 15 of the Act or Section 20
of the Exchange Act against any losses,  claims, damages or liabilities to which
the Company, any such director or officer of the Company or any such controlling
person of the Company may become  subject  under the Act,  the  Exchange  Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect  thereof)  arise out of or are based  upon (a) any untrue  statement  or
alleged  untrue  statement of any material  fact  contained in the  Registration
Statement or any amendment thereto, any Preliminary Prospectus or the Prospectus
or any amendment or supplement  thereto,  or any Application or (b) the omission
or the alleged  omission to state  therein a material fact required to be stated
in  the  Registration  Statement  or  any  amendment  thereto,  any  Preliminary
Prospectus or the  Prospectus or any  amendment or  supplement  thereto,  or any
Application or necessary to make the statements  therein not misleading in light
of the  circumstances  in which they are made,  in each case to the extent,  but
only to the extent,  that such untrue  statement or alleged untrue  statement or
omission or alleged  omission was made in reliance upon and in  conformity  with
written  information  furnished  to the Company by any  Underwriter  through the
Representative  specifically for use therein; and, subject to the limitation set
forth immediately preceding this clause, will reimburse,  as incurred, any legal
or other expenses reasonably incurred by the Company or any director, officer or
controlling  person of the Company in connection with investigation or defending
against or appearing as a third-party  witness in connection with any such loss,
claim,  damage,  liability  or any action in  respect  thereof.  This  indemnity
agreement  will be in  addition  to any  liability  which such  Underwriter  may
otherwise  have. No Underwriter  will,  without the prior written consent of the
Company,  settle or  compromise  or consent to the entry of any  judgment in any
pending or  threatened  claim,  action,  suit or  proceeding in respect of which
indemnification may be sought hereunder (whether or not the Company,  any of its
directors,  any of its  officers  who signed the  Registration  Statement or any
person who controls  the Company  within the meaning of Section 15 of the Act or
Section  20 of the  Exchange  Act is a party  to  such  claim,  action,  suit or
proceeding),   unless  such  settlement,   compromise  or  consent  includes  an
unconditional  release  of the  Company  and each  such  director,  officer  and
controlling person from all liability arising out of such claim, action, suit or
proceeding.

                  8.3  Notice  of  Defense.   Promptly   after   receipt  by  an
indemnified  party  under this  Section 8 of notice of the  commencement  of any
action, such indemnified party will, if a claim in respect thereof is to be made
against the  indemnifying  party under this  Section 8, notify the  indemnifying
party  of  the  commencement   thereof;  but  the  omission  so  to  notify  the
indemnifying  party will not relieve it from any liability  which it may have to
any  indemnified  party  otherwise  than under this  Section 8. In case any such
action  is  brought  against  any  indemnified   party,   and  it  notifies  the
indemnifying party of the commencement  thereof,  the indemnifying party will be
entitled to  participate  therein  and, to the extent that it may wish,  jointly
with any other indemnifying party and

                                       24
<PAGE>
the indemnified  party shall have reasonably  concluded that there may be one or
more legal defenses  available to it and/or other indemnified  parties which are
different from or additional to those available to the  indemnifying  party, the
indemnifying party shall not have the right to direct the defense of such action
on behalf of such  indemnified  party or parties and such  indemnified  party or
parties shall have the right to select separate counsel to defend such action on
behalf of such indemnified party or parties.  After notice from the indemnifying
party to such indemnified party of its election so to assume the defense thereof
and  approval  by such  indemnified  party of counsel  appointed  to defend such
action,  the  indemnifying  party will not be liable to such  indemnified  party
(which may not be unreasonably withheld or delayed) under this Section 8 for any
legal  or  other  expenses,   other  than  reasonable  costs  of  investigation,
subsequently  incurred by such indemnified  party in connection with the defense
thereof,  unless (a) the indemnified  party shall have employed separate counsel
in  accordance  with  the  proviso  to the next  preceding  sentence  (it  being
understood,  however, that in connection with such action the indemnifying party
shall not be liable for the  expenses of more than one  separate  counsel at any
one time in any one action or separate but substantially  similar actions in the
same jurisdiction  arising out of the same general allegations or circumstances,
designated by the  Representative  in the case of Section 8.1,  representing the
indemnified  parties  under such  Section  8.1 who are parties to such action or
actions) or (b) the indemnifying  party has authorized the employment of counsel
for the indemnified party at the expense of the indemnifying  party.  After such
notice from the indemnifying  party to such indemnified  party, the indemnifying
party will not be liable for the costs and  expenses of any  settlement  of such
action  effected  by  such   indemnified   party  without  the  consent  of  the
indemnifying  party,  unless such indemnified party waived its rights under this
Section 8 in which  case the  indemnified  party may  effect  such a  settlement
without such consent.

                  8.4  Contribution.  In  circumstances  in which the  indemnity
agreement  provided  for  in the  preceding  paragraphs  of  this  Section  8 is
unavailable or insufficient to hold harmless an indemnified  party in respect of
any losses, claims,  damages or liability (or actions in respect thereof),  each
indemnifying  party,  in order to provide for just and  equitable  contribution,
shall  contribute to the amount paid or payable by such  indemnified  party as a
result of such losses,  claims,  damages or  liabilities  (or actions in respect
thereof)  in such  proportion  as is  appropriate  to reflect  (a) the  relative
benefits  received by the indemnifying  party or parties on the one hand and the
indemnified  party on the other  from the  offering  of the Shares or (b) if the
allocation  provided by the foregoing  clause (a) is not permitted by applicable
law,  not  only  such  relative  benefits  but also  the  relative  fault of the
indemnifying  party or parties on the one hand and the indemnified  party on the
other in connection  with the  statements or omissions or alleged  statements or
omissions that resulted in such losses,  claims, damages or liability (or action
in respect  thereof).  The relative  benefits received by the Company on the one
hand  and the  Underwriters  on the  other  shall  be  deemed  to be in the same
proportion as the total proceeds from the offering  (after  deducting  expenses)
received by the Company bear to the total underwriting discounts and commissions
received  by the  Underwriters.  The  relative  fault  of the  parties  shall be
determined by reference  to, among other  things,  whether the untrue or alleged
untrue statement of a material fact or the omission or alleged omission to state
a  material  fact  relates  to  information  supplied  by  the  Company  or  the
Underwriters,  the parties' relative intents,  knowledge,  access to information
and opportunity to correct or prevent such statement or

                                       25
<PAGE>
omission,   and  any  other   equitable   considerations   appropriate   in  the
circumstances.  The  Company  and the  Underwriters  agree  that it would not be
equitable if the amount of such  contribution were determined by pro rata or per
capita  allocation (even if the Underwriters were treated as one entity for such
purpose) or by any other  method of  allocation  that does not take into account
the equitable  consideration  referred to in the first  sentence of this Section
8.4.  Notwithstanding  any other  provision of this Section 8.4, no  Underwriter
shall be obligated to make contributions  hereunder that in the aggregate exceed
the underwriter  discount on the Shares purchased by such Underwriter under this
Agreement,  less the aggregate  amount of any damages that such  Underwriter has
otherwise  been  required  to pay in  respect  of the same or any  substantially
similar claim, and no person guilty of fraudulent  misrepresentation (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution  from any
person  who  was  not   guilty  of  such   fraudulent   misrepresentation.   The
Underwriters'  obligations to contribute  hereunder are several in proportion to
their respective underwriting obligations and not joint, and contributions among
Underwriters  shall  be  governed  by  the  provisions  of the  Agreement  Among
Underwriters.  For  purposes of this  Section  8.4,  each  person,  if any,  who
controls an  Underwriter  within the meaning of Section 15 of the Act or Section
20 of the  Exchange  Act  shall  have the same  rights to  contribution  as such
Underwriter,  and each director of the Company,  each officer of the Company who
signed the  Registration  Statement  and each  person,  if any, who controls the
Company  within  the  meaning  of  Section  15 of the Act or  Section  20 of the
Exchange Act,  shall have the same right to  contribution  as the Company as the
case may be.


                                   SECTION 9.
                             Default of Underwriters

         If one or more  Underwriters  default in their  obligations to purchase
Firm Shares,  or Option Shares hereunder and the aggregate number of such Shares
that such defaulting  Underwriter or Underwriters  agreed but failed to purchase
is ten percent or less of the  aggregate  number of Firm Shares or Option Shares
to be purchased by all of the  Underwriters  at such time  hereunder,  the other
Underwriters may make arrangements  satisfactory to the  Representative  for the
purchase  of such  Shares by other  persons  (who may include one or more of the
non-defaulting  Underwriters,  including  the  Representative),  but if no  such
arrangements  are made by the Firm  Closing Date or the related  Option  Closing
Date, as the case may be, the other Underwriters shall be obligated severally in
proportion  to their  respective  commitments  hereunder  to  purchase  the Firm
Shares, or Option Shares that such defaulting Underwriter or Underwriters agreed
but failed to purchase.  In the event of any default by one or more Underwriters
as  described  in this  Section  9, the  Representative  shall have the right to
postpone the Firm Closing Date or the Option  Closing  Date, as the case may be,
established  as  provided  in Section 3 hereof for not more than seven  business
days in order that any  necessary  changes  may be made in the  arrangements  or
documents for the purpose and delivery of the Firm Shares or Option  Shares,  as
the case may be. As used in this Agreement,  the term "Underwriter" includes any
persons  substituted  for an  Underwriter  under this Section 9. Nothing  herein
shall relieve any defaulting Underwriter from liability for its default.

                                       26
<PAGE>
                                   SECTION 10.
                                    Survival

         The  respective  representations,  warranties,  agreements,  covenants,
indemnities and other statements of the Company,  its officers and directors and
the several  Underwriters set forth in this Agreement or made by or on behalf of
them,  respectively,  pursuant to this Agreement  shall remain in full force and
effect, regardless of (a) any investigation made by or on behalf of the Company,
any of its officers or directors,  any  Underwriter  or any  controlling  person
referred to in Section 8 hereof and (b)  delivery of and payment for the Shares.
The respective agreements, covenants, indemnities and other statements set forth
in Sections 5 and 8 hereof shall remain in full force and effect,  regardless of
any termination or cancellation this Agreement.


                                   SECTION 11.
                                   Termination

                  11.1 By Representative.  This Agreement may be terminated with
respect to the Firm Shares or any Option  Shares in the sole  discretion  of the
Representative  by notice to the Company given prior to the Firm Closing Date or
the related  Option  Closing Date,  respectively,  in the event that the Company
shall have failed, refused or been unable to perform all obligations and satisfy
all  conditions  on its part to be performed or satisfied  hereunder at or prior
thereto or, if at or prior to the Firm Closing date or such Option Closing Date,
respectively:

                           (a) the Company  shall have  sustained  any  material
loss  or  interference  with  its  business  or  properties  from  fire,  flood,
hurricane,  accident or other calamity,  whether or not covered by insurance, or
from any labor  dispute or any legal or  governmental  proceeding or there shall
have  been  any  material  adverse  change,  or  any  development   involving  a
prospective material adverse change (including  financial or otherwise),  in the
business prospects, net worth or results of operations of the Company, except in
each case as described in or  contemplated  by the Prospectus  (exclusive of any
amendment or supplement thereto);

                           (b)  trading  in the  Common  Stock  shall  have been
suspended by the Commission or the National  Association  of Securities  Dealers
Automated  Quotation  National Market or trading in securities  generally on the
New York Stock Exchange or the American Stock Exchange shall have been suspended
or minimum or maximum prices shall have been established on any such exchange or
market system;

                           (c) a banking  moratorium shall have been declared by
New York, Arizona, or United States authorities; or

                           (d)  there   shall  have  been  (i)  an  outbreak  or
escalation of hostilities  between the United States and any foreign power, (ii)
an outbreak or escalation of any other  insurrection or armed conflict involving
the United States or (iii) any other calamity or crisis having

                                       27
<PAGE>
an effect on the  financial  markets  that,  in the  reasonable  judgment of the
Representative, makes it impracticable or inadvisable to proceed with the public
offering  or the  delivery  of the Shares as  contemplated  by the  Registration
Statement, as amended as of the date hereof.

                  11.2  Effect of  Termination  Hereunder.  Termination  of this
Agreement pursuant to this Section 11 shall be without liability of any party to
any other party, except as provided in Section 10 hereof.


                                   SECTION 12.
                      Information Supplied by Underwriters

         The  statements set forth in the last paragraph on the front cover page
and  under the  heading  "Underwriting"  in any  Preliminary  Prospectus  or the
Prospectus,  to the extent such statements relate to the Underwriters constitute
the only information  furnished by any Underwriter through the Representative to
the  Company  for the  purposes  of  Section 8 and 10 hereof.  The  Underwriters
represent and warrant to the Company that such statements,  to such extent,  are
correct as of the date hereof and at each Closing Date.



                                   SECTION 13.
                                     Notices

         All communications hereunder shall be in writing and, if sent to any of
the  Underwriters,  shall be  mailed  (certified  or  registered  mail,  postage
prepaid,   return   receipt   requested)  or  delivered  or  sent  by  facsimile
transmission  and confirmed in writing to Spelman & Co.,  Inc.,  2355  Northside
Drive, Suite 200, San Diego, California 92108, Attention: Mr. Jason Rogers (with
a copy to Dennis J. Doucette,  Esq., Luce, Forward,  Hamilton & Scripps LLP, 600
West Broadway,  Suite 2600, San Diego, CA 92101), if sent to the Company,  shall
be mailed  (certified  or  registered  mail,  postage  prepaid,  return  receipt
requested), delivered or sent by facsimile transmission and confirmed in writing
to the Company at 1719 W. University, Ste. 187, Tempe, Arizona 85281, Attention:
Mr. Hooman Nikzad,  (with a copy to Paul M. Gales, Esq., Quarles & Brady, One E.
Camelback Road, Suite 400, Phoenix,  Arizona 85012).  Notices shall be effective
if mailed,  48 hours  after  deposit  in the mail  properly  addressed,  sent by
facsimile, upon receipt and in any other instance, when delivered.


                                   SECTION 14.
                                   Successors

         This Agreement  shall inure to the benefit of and shall be binding upon
the several Underwriters,  the Company and their respective successors and legal
representatives, and nothing

                                       28
<PAGE>
expressed or  mentioned  in this  Agreement is intended or shall be construed to
give any other person any legal or equitable right,  remedy or claim under or in
respect of this Agreement,  or any provisions herein  contained,  this Agreement
and all conditions and provisions  hereof being intended to be and being for the
sole and  exclusive  benefit  of such  persons  and for the  benefit of no other
person except that (a) the indemnities of the Company  contained in Section 8 of
this  Agreement  shall also be for the  benefit  of any  person or  persons  who
control any  Underwriter  within the meaning of Section 15 of the Act or Section
20 of the Exchange Act and (b) the indemnities of the Underwriters  contained in
Section 8 of this  Agreement  shall also be for the benefit of the  directors of
the  Company,  the  officers of the  Company  who have  signed the  Registration
Statement  and any person or persons who control the Company  within the meaning
of Section 15 of the Act or Section 20 of the  Exchange  Act.  No  purchaser  of
Shares  from  any  Underwriter  shall  be  deemed a  successor  because  of such
purchase.


                                   SECTION 15.
                                 Applicable Law

         The validity and  interpretation  of this Agreement,  and the terms and
conditions  set forth  herein,  shall be governed by and construed in accordance
with the laws of the State of California without giving effect to any provisions
relating to conflicts of laws.


                                   SECTION 16.
                                  Counterparts

         This  Agreement  may be executed in two or more  counterparts,  each of
which shall be deemed an original,  but all of which together  shall  constitute
one and the same instrument.

         If  the  foregoing  correctly  sets  forth  our  understanding,  please
indicate your  acceptance  thereof in the space provided below for that purpose,
whereupon  this letter shall  constitute an agreement  binding the Company,  and
each of the several Underwriters.

                                         Very truly yours,

                                         M.D. LABS, INC.


                                         By:_________________________________
                                              Hooman Nikzad
                                              Chief Executive Officer



                                       29
<PAGE>
The foregoing Agreement is hereby
confirmed and accepted as of the
date first above written.

Spelman & Co., Inc.
(As Representative of the several
  Underwriters named in Schedule 1 hereto)



By:______________________________________
        Richard P. Woltman, President


                                       30
<PAGE>
                                   SCHEDULE 1

                                  UNDERWRITERS


                                                           Number of Firm Shares
Underwriter                                                   to be purchased
- -----------                                                   ---------------
Sentra Securities Corporation
Spelman & Co., Inc.





         Total                                                   __________

                                 M.D. LABS, INC.

                                1,300,000 Shares

                            SELECTED DEALER AGREEMENT



                                                              ____________, 1996

Dear Sirs:

         Sentra  Securities  Corporation,  Spelman  & Co.,  Inc.  and the  other
Underwriters  named  in  the  Prospectus  relating  to  the  above  shares  (the
"Underwriters"),  acting through us as Representative, is severally offering for
sale an  aggregate  of  1,300,000  Shares (the "Firm  Shares")  of common  stock
("Common  Stock") of M.D.  Labs,  Inc.  (the  "Company") at a price of $____ per
Share.  In  addition,  the several  Underwriters  have been granted an option to
purchase  from the  Company up to an  additional  195,000  Shares  (the  "Option
Shares")  to  cover  over-allotments  in  connection  with  the sale of the Firm
Shares.  The Firm Shares and any Option  Shares  purchased are herein called the
"Shares".  The Shares and the terms  under which they are to be offered for sale
by the several Underwriters are more particularly described in the Prospectus.

         The  Underwriters  are offering the Shares  pursuant to a  Registration
Statement (the  "Registration  Statement")  under the Securities Act of 1933, as
amended,  subject  to the terms of (a)  their  Underwriting  Agreement  with the
Company, (b) this Agreement, and (c) the Representative's instructions which may
be forwarded to the Selected  Dealers from time to time. This invitation is made
by the  Representative  only if the Shares may be lawfully offered by dealers in
your state. The terms and conditions of this invitation are as follows:

         1. Offer to Selected Dealers.  The  Representative is hereby soliciting
offers to buy,  upon the terms and  conditions  hereof,  a portion of the Shares
from Selected  Dealers who are to act as principal.  Shares are to be offered to
the public at a price of $_______  per Share (the  "Offering  Price").  Selected
Dealers who are members of the National Association of Securities Dealers,  Inc.
(the  "NASD")  will be allowed,  on all Shares  sold by them,  a  concession  of
$______  payable as  hereinafter  provided.  Selected  Dealers may reallow other
dealers  who are  members  of the NASD a portion  of that  concession  up to the
amount of $_____ per Share with  respect to Shares sold by or through  them.  No
NASD member may reallow  commissions to any non-member  broker-dealer  including
foreign  broker-dealers  registered  pursuant to the Securities  Exchange Act of
1934. This offer is solicited subject to the Company's  issuance and delivery of
certificates  and other  documents  evidencing  its  Shares  and the  acceptance
thereof by the Representative,  to the approval of legal matters by counsel, and
to the terms and conditions set forth herein.

         2.  Revocation of Offer.  The Selected  Dealer's offer to purchase,  if
made prior to the effective date of the Registration  Statement,  may be revoked
in whole or in part without  obligation or commitment of any kind by it any time
prior to acceptance and no offer may be accepted by the
                                        1
<PAGE>
Representative  and no sale can be made until after the  Registration  Statement
covering  the Shares has  become  effective  with the  Securities  and  Exchange
Commission.  Subject to the foregoing,  upon execution by the Selected Dealer of
the Offer to Purchase  below and the return of same to the  Representative,  the
Selected Dealer shall be deemed to have offered to purchase the number of Shares
set forth in its offer on the basis set forth in Section 1 above. Any oral offer
to  purchase  made by the  Selected  Dealer  shall  be  deemed  subject  to this
Agreement  and  shall  be  confirmed  by the  Representative  by the  subsequent
execution and return of this Agreement. Any oral notice by the Representative of
acceptance  of the  Selected  Dealer's  offer  shall be  followed  by written or
telegraphic confirmation preceded or accompanied by a copy of the Prospectus. If
a contractual commitment arises hereunder, all the terms of this Selected Dealer
Agreement shall be applicable. The Representative may also make available to the
Selected  Dealer an allotment to purchase  Shares,  but such allotment  shall be
subject to modification or termination upon notice from the  Representative  any
time prior to an exchange of confirmations  reflecting  completed  transactions.
All  references  hereafter in this  Agreement to the purchase and sale of Shares
assume and are  applicable  only if  contractual  commitments  to  purchase  are
completed in accordance with the foregoing.

         3. Selected  Dealer Sales.  Any Shares  purchased by a Selected  Dealer
under the terms of this Agreement may be immediately re-offered to the public at
the Offering  Price in  accordance  with the terms of the  offering  thereof set
forth herein and in the  Prospectus,  subject to the securities or blue sky laws
of the various  states or other  jurisdictions.  Shares  shall not be offered or
sold by the Selected  Dealers  below the  Offering  Price.  The Selected  Dealer
agrees to advise the Representative, upon request, of any Shares purchased by it
remaining  unsold and,  the  Representative  has the right to purchase  all or a
portion of such Shares, at the Public Offering Price less the selling concession
or such part thereof as the Representative shall determine.

         4. Payment for Shares.  Payment for Shares  which the  Selected  Dealer
purchases  hereunder shall be made by the Selected Dealer on or before three (3)
business days after the date of each confirmation by certified or bank cashier's
check payable to the  Representative.  Certificates  for the securities shall be
delivered as soon as practicable after delivery instructions are received by the
Representative.

         5.       Open Market Transactions; Stabilization.

                  5.1 For the purpose of  stabilizing  the market in the Shares,
the  Representative  has been  authorized  to make  purchases  and  sales of the
Company's  Shares in the open market or otherwise,  and, in arranging for sales,
to overallot.  If, in connection  with such  stabilization,  the  Representative
contracts  for or  purchases  in the open market any Shares sold to the Selected
Dealer  hereunder  and  not  effectively  placed  by the  Selected  Dealer,  the
Representative  may charge the  Selected  Dealer for the accounts of the several
Underwriters an amount equal to the Selected  Dealer  concession on such Shares,
together with any applicable  transfer taxes,  and the Selected Dealer agrees to
pay such  amount  to the  Representative  on  demand.  Certificates  for  Shares
delivered on such repurchases need not be the identical certificates  originally
purchased.
                                        2
<PAGE>
                  5.2  The  Selected  Dealer  will  not,  until  advised  by the
Representative that the entire offering has been distributed and closed, bid for
or purchase  Shares in the open market or otherwise  make a market in the Shares
or  otherwise  attempt to induce  others to purchase  Shares in the open market.
Nothing contained in this section shall prohibit the Selected Dealer from acting
as an agent in the execution of unsolicited  orders of customers in transactions
effectuated for them through a market maker.

         6.  Allotments.  The  Representative  reserves  the right to reject all
subscriptions,  in  whole  or in  part,  to make  allotments  and to  close  the
subscription  books at any time  without  notice.  If an order  from a  Selected
Dealer is rejected or if a payment is received  which proves  insufficient,  any
compensation  paid to the  Selected  Dealer  shall be returned  by the  Selected
Dealer either in cash or by a charge against the account of the Selected Dealer,
as the Representative may elect.

         7. Reliance on  Prospectus.  The Selected  Dealer agrees not to use any
supplemental  sales literature of any kind without prior written approval of the
Representative unless it is furnished by the Representative for such purpose. In
offering and selling the Company's Shares,  the Selected Dealer will rely solely
on the  representations  contained in the Prospectus.  Additional  copies of the
current  Prospectus  will  be  supplied  by  the  Representative  in  reasonable
quantities upon request.

         8. Representations of Selected Dealer. By accepting this Agreement, the
Selected Dealer  represents that it: (a) is registered as a broker-dealer  under
the  Securities  Exchange Act of 1934, as amended;  (b) is qualified to act as a
Dealer in the States or other  jurisdictions in which it offers the Shares;  (c)
is a  member  in good  standing  with  the  NASD;  (d)  will  maintain  all such
registrations,  qualifications,  and  memberships  throughout  the  term of this
Agreement;  (e) will comply with all  applicable  Federal  laws  relating to the
offering,  including,  but not  limited to,  Rule  15c2-8  under the  Securities
Exchange  Act of 1934 and  Release  No.  4968 under the  Securities  Act of 1933
relating to delivery of preliminary and final prospectuses; (f) will comply with
the laws of the state or other  jurisdictions  concerned;  (g) will  comply  the
rules and regulations of the NASD including, but not limited to, full compliance
with Rules 2100,  2730 2740,  2720 and 2750 of the Conduct Rules of the NASD and
the  interpretations  of such sections  promulgated by the Board of Governors of
the  NASD  including  an   interpretation   with  respect  to  "Free-Riding  and
Withholding" dated November 1, 1970, and as thereafter amended; and (h) confirms
that the  purchase  of the  number of Shares  it has  subscribed  for and may be
obligated to purchase will not cause it to violate the net capital  requirements
of Rule 15c3-1 under the Exchange Act.

         9. Blue Sky  Qualification.  The  Selected  Dealer  agrees that it will
offer to sell the  Shares  only (a) in  states or  jurisdictions  in which it is
licensed as a broker-dealer  under the laws of such states, and (b) in which the
Representative  has been advised by counsel that the Shares have been  qualified
for sale under the  respective  securities or Blue Sky laws of such states.  The
Representative  assumes no obligation or  responsibility  as to the right of any
Selected Dealer to sell the Shares in any state or as to any sale therein.
                                        3
<PAGE>
         10. Expenses. No expenses will be charged to Selected Dealers. A single
transfer  tax, if any, on the sale of the Shares by the  Selected  Dealer to its
customers will be paid when such Shares are delivered to the Selected Dealer for
delivery  to  its  customers.   However,   the  Selected  Dealer  will  pay  its
proportionate  share of any transfer tax or any other tax (other than the single
transfer  tax  described  above)  if any  such tax  shall  be from  time to time
assessed against the Underwriters and other Selected Dealers.

         11. No Joint  Venture.  No Selected  Dealer is authorized to act as the
Underwriters'  agent,  or  otherwise  to act on our behalf,  in the  offering or
selling of Shares to the public or  otherwise.  Nothing  contained  herein  will
constitute  the Selected  Dealers an  association  or other  separate  entity or
partners with the  Underwriters,  or with each other,  but each Selected  Dealer
will be responsible for its share of any liability or expense based on any claim
to the contrary.

         12.  Communications.  This  Agreement  and  all  communications  to the
Underwriters shall be sent to the Representative at the following address or, if
sent by facsimile, to the number set forth below:

                           Mr. Jason Rogers
                           Spelman & Co., Inc.
                           2355 Northside Drive, Ste. 200
                           San Diego, CA  92108
                           Fax No. (619) 584-7010

Any notice to the Selected Dealer shall be properly given if mailed, telephoned,
or transmitted by facsimile to the Selected  Dealer at its address or number set
forth below its  signature to this  Agreement.  All  communications  and notices
initially transmitted by facsimile shall be confirmed in writing.

         13.  Governing Law. This  Agreement  shall be governed by and construed
according to the laws of the State of California.

         14.  Representative's  Authority and  Obligations.  The  Representative
shall  have full  authority  to take such  actions as it may deem  advisable  in
respect of all matters  pertaining  to the offering or arising  thereunder.  The
Representative  shall not be under any liability to the Selected Dealer,  except
such as may be  incurred  under  the  Securities  Act of 1933 and the  rules and
regulations thereunder, except for lack of good faith and except for obligations
assumed by it in this Agreement,  and no obligation on its part shall be implied
or inferred herefrom.

         15.  Assignment.  This  Agreement  may not be assigned by the  Selected
Dealer without the Representative's prior written consent.
                                        4
<PAGE>
         16. Termination.  The Selected Dealer will be governed by the terms and
conditions  of this  Agreement  until  it is  terminated.  This  Agreement  will
terminate upon the termination of the Offering.

         17. Counterparts.  This Agreement may be executed in counterparts, each
of which shall be deemed an original, and all of which together shall constitute
one instrument.  A copy of an executed counterpart of this Agreement may be sent
via facsimile by any party to the other party, and the other party may deem such
facsimile copy of the executed counterpart to be an original.

         18.  Application.  If you desire to purchase any of the Shares,  please
confirm your application by signing and returning to us your confirmation on the
duplicate copy of this letter,  even though you may have  previously  advised us
thereof by telephone or telegraph. Our signature hereon may be by facsimile.


                                          SENTRA SECURITIES CORPORATION



Dated:  _____________, 1996               By:________________________________
                                               Richard P. Woltman, President



Dated:  _____________, 1996               ___________________________________



                                          By:________________________________
                                        5
<PAGE>
                                OFFER TO PURCHASE
                                -----------------


         The undersigned does hereby offer to purchase  (subject to the right to
revoke set forth in Section 2) _______  Shares in accordance  with the terms and
conditions set forth above.




                                       _________________________________________



                                       By:______________________________________

                                       Its:_____________________________________

                                           Address:
                                           Facsimile Number:
                                           Telephone Number:
                                           ("Selected Dealer")



Date of Acceptance:________________________________
Accepted By:_______________________________________
IRS Employer Identification No.:___________________
Share Allocation:__________________________________

                                        6

THESE  SECURITIES MAY NOT BE PUBLICLY OFFERED OR SOLD UNLESS AT THE TIME OF SUCH
OFFER OR SALE,  THE  PERSON  MAKING  SUCH OFFER OR SALE  DELIVERS  A  PROSPECTUS
MEETING THE  REQUIREMENTS  OF SECTION 10 OF THE SECURITIES ACT OF 1933 FORMING A
PART OF A REGISTRATION STATEMENT, OR POST-EFFECTIVE  AMENDMENT THERETO, WHICH IS
EFFECTIVE  UNDER SAID ACT,  UNLESS IN THE OPINION OF COUNSEL TO THE COMPANY SUCH
OFFER AND SALE IS EXEMPT FROM THE PROVISIONS OF SECTION 5 OF SAID ACT.


                                     WARRANT

                   For the Purchase of Shares of Common Stock
                                       of
                                 M.D. LABS, INC.

                     Void After 5 P.M. _______________, 2001

No. 1

Warrant to Purchase One Hundred Thirty Thousand (130,000) Shares of Common Stock

         THIS  IS TO  CERTIFY,  that,  for  value  received,  Sentra  Securities
Corporation  and  Spelman  & Co.,  Inc.  (collectively,  the  "Underwriter")  or
registered assigns, is entitled, subject to the terms and conditions hereinafter
set  forth,  on or after  ____________,  1997  and at any time  prior to 5 P.M.,
Pacific Standard Time ("PST"), on _______________,  2001, but not thereafter, to
purchase  such number of shares of Common  Stock (the  "Shares")  of M.D.  Labs,
Inc., a Delaware  corporation (the "Company"),  from the Company as is set forth
above and upon payment to the Company of $____ per Share (the "Purchase Price"),
if and to the extent this Warrant is exercised,  in whole or in part, during the
period this  Warrant  remains in force,  subject in all cases to  adjustment  as
provided  in Section 2 hereof,  and to  receive a  certificate  or  certificates
representing  the Shares so purchased,  upon  presentation  and surrender to the
Company  of this  Warrant,  with  the  form  of  subscription  attached  hereto,
including changes thereto  reasonably  requested by the Company,  duly executed,
and accompanied by payment of the Purchase Price of each Share.

                                   SECTION 1.
                              Terms of this Warrant

         1.1 Time of Exercise. Subject to the provisions of Sections 1.5 and 3.1
hereof,  this  Warrant may be  exercised at any time and from time to time after
9:00 A.M., PST, on __________,  1997 (the "Exercise  Commencement Date"), but no
later than 5:00 P.M., _________,  2001 (the "Expiration Time") at which it shall
become void, and all rights hereunder shall thereupon cease.
<PAGE>
         1.2      Manner of Exercise.

                  1.2.1 The holder of this Warrant (the  "Holder")  may exercise
this Warrant,  in whole or in part, upon surrender of this Warrant with the form
of subscription  attached hereto duly executed,  to the Company at its corporate
office in Tempe,  Arizona,  together with the full Purchase Price for each Share
to be  purchased in lawful money of the United  States,  or by certified  check,
bank draft or postal or express money order payable in United States  dollars to
the order of the Company, and upon compliance with and subject to the conditions
set forth herein.

                  1.2.2  Upon   receipt  of  this   Warrant  with  the  form  of
subscription duly executed and accompanied by payment of the aggregate  Purchase
Price for the Shares for which this Warrant is then being exercised, the Company
shall cause to be issued  certificates  for the total number of whole Shares for
which this Warrant is being exercised in such  denominations as are required for
delivery  to  the  Holder,   and  the  Company  shall  thereupon   deliver  such
certificates to the Holder or its nominee.

                  1.2.3 In case the Holder  shall  exercise  this  Warrant  with
respect to less than all of the Shares that may be purchased under this Warrant,
the Company  shall  execute a new Warrant for the balance of the Shares that may
be purchased  upon  exercise of this Warrant and deliver such new Warrant to the
Holder.

                  1.2.4 The Company  covenants  and agrees that it will pay when
due and  payable  any and all taxes which may be payable in respect of the issue
of this  Warrant,  or the issue of any Shares upon the exercise of this Warrant.
The Company shall not, however,  be required to pay any tax which may be payable
in respect of any transfer  involved in the issuance or delivery of this Warrant
or of the  Shares  in a name  other  than  that  of the  Holder  at the  time of
surrender,  and until the payment of such tax the Company  shall not be required
to issue such Shares.

         1.3  Exchange of Warrant.  This  Warrant may be  split-up,  combined or
exchanged  for  another  Warrant or  Warrants  of like tenor to  purchase a like
aggregate  number of Shares.  If the  Holder  desires  to  split-up,  combine or
exchange  this Warrant,  he shall make such request in writing  delivered to the
Company at its corporate  office and shall  surrender this Warrant and any other
Warrants to be so split-up, combined or exchanged, the Company shall execute and
deliver to the person  entitled  thereto a Warrant or Warrants,  as the case may
be, as so  requested.  The Company shall not be required to effect any split-up,
combination or exchange which will result in the issuance of a Warrant entitling
the Holder to  purchase  upon  exercise a fraction  of a Share.  The Company may
require  the  Holder to pay a sum  sufficient  to cover any tax or  governmental
charge  that may be imposed in  connection  with any  split-up,  combination  or
exchange of Warrants.

                                        2
<PAGE>
         1.4  Holder as Owner.  Prior to due  presentment  for  registration  of
transfer  of this  Warrant,  the  Company  may deem and treat the  Holder as the
absolute  owner of this  Warrant  (notwithstanding  any notation of ownership or
other writing  hereon) for the purpose of any exercise  hereof and for all other
purposes, and the Company shall not be affected by any notice to the contrary.

         1.5  Transfer and  Assignment.  Prior to one year from the date hereof,
this Warrant may not be sold, hypothecated,  exercised, assigned or transferred,
except to  individuals  who are officers of the  Underwriter or any successor to
its business or pursuant to the laws of descent and distribution, and thereafter
and until its expiration shall be assignable and transferable in accordance with
and subject to the provisions of the Securities Act of 1933 and applicable state
securities laws; provided,  however, that if not exercised immediately upon such
transfer, this Warrant shall lapse.

         1.6 Method of Assignment.  Any assignment  permitted hereunder shall be
made by surrender of this  Warrant to the Company at its  principal  office with
the form of assignment attached hereto duly executed and funds sufficient to pay
any transfer tax. In such event, the Company shall, without charge,  execute and
deliver a new Warrant in the name of the assignee  named in such  instrument  of
assignment  and this Warrant  shall  promptly be  canceled.  This Warrant may be
divided or  combined  with  other  Warrants  which  carry the same  rights  upon
presentation  thereof at the  corporate  office of the Company  together  with a
written notice signed by the Holder,  specifying the names and  denominations in
which such new Warrants are to be issued.

         1.7  Rights of  Holder.  Nothing  contained  in this  Warrant  shall be
construed  as  conferring  upon the Holder the right to vote or to consent or to
receive notice as a shareholder in respect of any meetings of  shareholders  for
the  election  of  directors  or any  other  matter,  or as  having  any  rights
whatsoever as a shareholder of the Company.  If,  however,  at any time prior to
the  expiration of this Warrant and prior to its exercise,  any of the following
shall occur:

                           (a) the Company shall take a record of the holders of
its  shares of Common  Stock for the  purpose  of  entitling  them to  receive a
dividend or distribution  payable  otherwise than in cash, or a cash dividend or
distribution  payable  otherwise  than out of current or retained  earnings;  as
indicated by the accounting  treatment of such dividend or  distribution  on the
books of the Company; or

                           (b) the  Company  shall  offer to the  holders of its
Common Stock any additional shares of capital stock of the Company or securities
convertible into or exchangeable for shares of capital stock of the Company,  or
any option, right or warrant to subscribe therefor; or

                           (c)   there   shall   be    proposed    any   capital
reorganization  or  reclassification  of the Common  Stock,  or a sale of all or
substantially all of the assets of the Company,  or a consolidation or merger of
the Company with another entity; or

                                        3
<PAGE>
                           (d)  there   shall  be   proposed  a   voluntary   or
involuntary dissolution, liquidation or winding up of the Company;

then, in any one or more of said cases,  the Company shall cause to be mailed to
the Holder,  at the earliest  practicable time (and, in any event, not less than
twenty  (20)  days  before  any  record  date or other  date set for  definitive
action),  written  notice of the date on which the  books of the  Company  shall
close or a record shall be taken to determine the shareholders  entitled to such
dividend,  distribution,  convertible or exchangeable securities or subscription
rights,  or entitled  to vote on such  reorganization,  reclassification,  sale,
consolidation,  merger, dissolution,  liquidation or winding up, as the case may
be. Such notice shall also set forth such facts as shall  indicate the effect of
such action (to the extent such effect may be known at the date of such  notice)
on the Purchase Price and the kind and amount of the Shares and other securities
and property  deliverable upon exercise of this Warrant.  Such notice shall also
specify  the date as of which the  holders of the Common  Stock of record  shall
participate in said distribution or subscription  rights or shall be entitled to
exchange their Common Stock for securities or other  property  deliverable  upon
such reorganization, reclassification, sale, consolidation, merger, dissolution,
liquidation  or winding up, as the case may be (on which  date,  in the event of
voluntary or involuntary dissolution,  liquidation or winding up of the Company,
the right to exercise this Warrant shall terminate)

         Without limiting the obligation of the Company to provide notice to the
holder of actions  hereunder,  it is agreed that  failure of the Company to give
notice shall not invalidate such action of the Company.

         1.8 Lost Certificates.  If this Warrant is lost,  stolen,  mutilated or
destroyed,  the Company  shall,  on such  reasonable  terms as to  indemnity  or
otherwise as it may impose  (which  shall,  in the case of a mutilated  Warrant,
include the surrender  thereof),  issue a new Warrant of like  denomination  and
tenor as, and in substitution  for, this Warrant,  which shall thereupon  become
void. Any such new Warrant shall constitute an additional contractual obligation
of the  Company,  whether  or not the  Warrant  so lost,  stolen,  destroyed  or
mutilated shall be at any time enforceable by anyone.

         1.9  Covenants  of the  Company.  The Company  covenants  and agrees as
follows:

                  1.9.1 At all times it shall reserve and keep available for the
exercise of this Warrant such number of authorized shares of Common Stock as are
sufficient to permit the exercise in full of this Warrant.

                  1.9.2 Prior to the  issuance  of any Shares  upon  exercise of
this  Warrant,  the  Company  shall  secure the  listing of such Shares upon any
securities  exchange or  automated  quotation  system  upon which the  Company's
Common Stock is listed for trading.

                  1.9.3 The Company  covenants  that all Shares when issued upon
the exercise of this Warrant will be validly issued, fully paid,  non-assessable
and free of preemptive rights.

                                        4
<PAGE>
                                   SECTION 2.
                          Adjustment of Purchase Price
                 and Number of Shares Purchasable upon Exercise

         2.1 Stock Splits. If the Company at any time or from time to time after
the  issuance  date of this Warrant  effects a  subdivision  of the  outstanding
Common  Stock,  the  Purchase  Price  then in  effect  immediately  before  that
subdivision shall be proportionately  decreased, and conversely,  if the Company
at any  time  or from  time to time  after  the  issuance  date of this  Warrant
combines the  outstanding  shares of Common  Stock,  the Purchase  Price then in
effect immediately  before the combination shall be  proportionately  increased.
Any adjustment  under this subsection 2.1 shall become effective at the close of
business on the date the subdivision or combination becomes effective.

         2.2 Dividends and Distributions.  In the event the Company at any time,
or from time to time after the issuance date of this Warrant  makes,  or fixes a
record  date for the  determination  of  holders  of Common  Stock  entitled  to
receive, a dividend or other distribution payable in additional shares of Common
Stock,  then and in each such event the  Purchase  Price then in effect shall be
decreased as of the time of such issuance or, in the event such a record date is
fixed,  as of the close of business  on such record  date,  by  multiplying  the
Purchase  Price then in effect by a fraction  (i) the  numerator of which is the
total number of shares of Common Stock issued and outstanding  immediately prior
to the time of such  issuance or the close of business on such record date,  and
(ii) the  denominator  of which  shall be the  total  number of shares of Common
Stock issued and outstanding  immediately  prior to the time of such issuance or
the close of  business  on such  record date plus the number of shares of Common
Stock issuable in payment of such dividend or distribution;  provided,  however,
that if such record date is fixed and such dividend is not fully paid or if such
distribution  is not fully made on the date fixed  therefor,  the Purchase Price
shall be recomputed  accordingly as of the close of business on such record date
and thereafter the Purchase Price shall be adjusted  pursuant to this subsection
2.2 as of the time of actual payment of such dividends or distributions.

         2.3 Recapitalization or  Reclassification.  If the Shares issuable upon
the exercise of the Warrant are changed  into the same or a different  number of
shares  of  any  class  or  classes  of  stock,   whether  by  recapitalization,
reclassification or otherwise (other than a subdivision or combination of shares
or stock dividend or a reorganization,  merger, consolidation or sale of assets,
provided for elsewhere in this Section 2, then and in any such event each holder
of Warrants  shall have the right  thereafter to exercise such Warrant as to the
kind and amount of stock and/or other  securities and property  receivable  upon
such  reclassification or other change, by the holder of the number of shares of
Shares as to which such Warrant might have been exercised  immediately  prior to
such reclassification or exchange, all subject to further adjustment as provided
herein.

         2.4 Sale of the Company. If at any time or from time to time there is a
capital  reorganization  of the Common  Stock  (other  than a  recapitalization,
subdivision,  combination,  reclassification  or exchange of shares provided for
elsewhere in this Section 2 or a merger or

                                        5
<PAGE>
consolidation of the Company with or into another Company, or the sale of all or
substantially  all of the Company's  properties  and assets to any other person,
then, as a part of such reorganization, merger, consolidation or sale, provision
shall be made so that the holders of the Warrants  shall  thereafter be entitled
to receive upon exercise of the Warrants, the number of shares of stock or other
securities  or property of the Company,  or of the successor  Company  resulting
from  such  merger  or  consolidation  or  sale,  to which a  holder  of  Shares
deliverable   upon   exercise   would  have  been   entitled  on  such   capital
reorganization,  merger,  consolidation,  or sale. In any such case, appropriate
adjustment  shall be made in the application of the provisions of this Section 2
with  respect  to  the  rights  of  the  holders  of  the  Warrants   after  the
reorganization,  merger, consolidation or sale to the end that the provisions of
this Section  (including  adjustment  of the  Purchase  Price then in effect and
number of shares  purchasable upon exercise of the Warrants) shall be applicable
after that event and be as nearly  equivalent to the provisions hereof as may be
practicable.

         2.5  Observance  of Duties.  The Company  will not, by amendment of its
Certificate of Incorporation or through any reorganization,  transfer of assets,
consolidation,  merger,  dissolution,  issue or sale of  securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or  performed  hereunder by the Company but will at all
times in good faith  assist in the carrying  out of all the  provisions  of this
section  2 and in the  taking  of  all  such  action  as  may  be  necessary  or
appropriate  in order to  protect  the  Exercise  Rights of the  holders  of the
Warrants against dilution or other impairment.


                                   SECTION 3.
                  Registration Under the Securities Act of 1933

         3.1 Registration and Legends. This Warrant and the Shares issuable upon
exercise of this Warrant have not been  registered  under the  Securities Act of
1933,  as amended  ("the  Act").  Upon  exercise,  in part or in whole,  of this
Warrant,  the  certificates  representing  the Shares  shall bear the  following
legend:

         THIS SECURITY HAS NOT BEEN REGISTERED OR QUALIFIED UNDER THE SECURITIES
         ACT OF 1933 ("ACT") OR THE SECURITIES OR BLUE SKY LAWS OF ANY STATE AND
         MAY NOT BE OFFERED AND SOLD UNLESS REGISTERED AND/OR QUALIFIED PURSUANT
         TO THE RELEVANT  PROVISIONS OF FEDERAL AND STATE SECURITIES OR BLUE SKY
         LAWS  OR  AN  EXEMPTION  FROM  SUCH   REGISTRATION   OR   QUALIFICATION
         APPLICABLE.  THEREFORE,  NO SALE OR TRANSFER OF THIS SECURITY  SHALL BE
         MADE,  NO  ATTEMPTED  SALE OR TRANSFER  SHALL BE VALID,  AND THE ISSUER
         SHALL NOT BE REQUIRED TO GIVE ANY EFFECT TO ANY SUCH TRANSACTION UNLESS
         (A) SUCH TRANSACTION  SHALL HAVE BEEN DULY REGISTERED UNDER THE ACT AND
         QUALIFIED OR APPROVED UNDER  APPROPRIATE STATE OR BLUE SKY LAWS, OR (B)
         THE ISSUER SHALL HAVE FIRST RECEIVED AN OPINION OF COUNSEL

                                        6
<PAGE>
         SATISFACTORY TO IT THAT SUCH REGISTRATION, QUALIFICATION OR
         APPROVAL IS NOT REQUIRED.

         3.2 No Action  Letter.  The Company  agrees that it shall be  satisfied
that no post-effective  amendment or new registration is required for the public
sale of the Shares if it shall be presented  with a letter from the Staff of the
Securities and Exchange  Commission (the  "Commission")  stating in effect that,
based upon stated  facts  which the Company  shall have no reason to believe are
not true in any material respect, the Staff will not recommend any action to the
Commission if such shares are offered and sold without delivery of a prospectus,
and that, therefore,  no post-effective  amendment to the Registration Statement
under which such Shares are to be  registered or new  registration  statement is
required to be filed.

         3.3 Demand  Registration  Rights.  The  Company  has  agreed,  upon the
Underwriter's  demand,  to  register  the  Shares,  to  file a new  Registration
Statement,  and to file all necessary  undertakings with the Commission so as to
permit the Underwriter,  or any assignee of the  Underwriter,  the right to sell
publicly the Shares  issued on exercise of this Warrant on two  occasions at any
time  within  five (5) years  from the  effective  date of the  Company's  first
Registration  Statement as filed in 1996. In connection  with the first request,
the Company  will bear all  expenses  attendant to  registering  the  securities
(subject to Section  3.5(e)),  and in connection  with the second  request,  the
holders of the securities will bear all expenses.

         3.4 Piggyback  Registration  Rights.  In the event that the Underwriter
does not exercise its right to demand that the Shares be registered, the Company
agrees to include any appropriate  Shares issuable upon exercise of the Warrants
in any  Registration  Statement filed by the Company at any time within five (5)
years from the effective date of the Company's first  Registration  Statement as
filed  in 1996  (except  for any  registration  on Forms  S-4 or S-8 or  similar
forms).

         3.5  Covenants   Regarding   Registration.   In  connection   with  any
registration  under Section 3.3 or 3.4 hereof,  the Company covenants and agrees
as follows:

                           (a)  The  Company  will,  within  twenty  days  after
written request from the Representative,  take all steps necessary to effectuate
preparation  and filing  with the  Securities  and  Exchange  Commission  of the
registration statement as required by and in compliance with the Act.

                           (b)  The   Company   shall  keep  such   registration
statement effective for the lesser of (i) one hundred twenty (120) days, or (ii)
the period of time in which the Holders of such  securities  have  effected  the
distribution  of their Shares.  During such period the Company shall prepare and
file with the SEC such amendments and supplements to such registration statement
and the prospectus used in connection with such registration statement as may be
necessary  to  comply  with  the  provisions  of the  Act  with  respect  to the
disposition of all securities covered by such registration statement.

                                        7
<PAGE>
                           (c) The  Company  shall  notify each Holder of Shares
covered by such  registration  statement at any time when a prospectus  relating
thereto is required to be delivered  under the Act of the happening of any event
as a result of which the prospectus included in such registration  statement, as
then in effect,  includes  an untrue  statement  of a material  fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements therein not misleading in light of the circumstances then existing.

                           (d) The Company  shall  furnish to the  Holders  such
numbers  of copies of a  prospectus,  including  a  preliminary  prospectus,  in
conformity  with the  requirements  of the Act, and such other documents as they
may  reasonably  request in order to facilitate  the  disposition  of the Shares
owned by them.

                           (e) The  Company  shall  pay  all  costs,  fees,  and
expenses  in  connection  with new  registration  statements  under  Section 3.3
(excluding the costs attendant to a second demand  registration) and Section 3.4
hereof including,  without limitation,  the Company's legal and accounting fees,
printing expenses, blue sky fees and expenses, except that the Company shall not
pay for any of the following costs and expenses:  (i) underwriting discounts and
commissions  allocable to the Shares, (ii) state transfer taxes, (iii) brokerage
commissions,  (iv) fees and expenses of counsel and  accountants for the holders
of this Warrant or the Shares.

                           (f) The Company will take all necessary  action which
may be  required  in  qualifying  or  registering  the  Shares  included  in any
Registration Statement or post-effective amendment or new registration statement
for  offering and sale under the  securities  or blue sky laws of such states as
are  reasonably  requested  by the  holders of such  Shares,  provided  that the
Company shall not be obligated to execute or file any general consent to service
or process or to qualify as a foreign  corporation to do business under the laws
of any such jurisdiction.

                           (g) The Holder  shall be entitled to pay the Purchase
Price for the Shares  purchasable  upon the  exercise of this Warrant out of the
proceeds of any sale of the Shares purchasable upon its exercise.

         3.6      Indemnity.

                  3.6.1 The  Company  shall  indemnify  and hold  harmless  each
person registering  securities  pursuant to this Section (the "Seller") and each
underwriter,  within the meaning of the Act, who may  purchase  from or sell for
any Seller any of the Common Stock from and against any and all losses,  claims,
damages,  and  liabilities  caused by any untrue  statement  or  alleged  untrue
statement of a material fact contained in any new registration  statement or any
supplemented  prospectus  under the Act included therein required to be filed or
furnished  by reason of this  Section,  or caused  by any  omission  or  alleged
omission  to state  therein or  necessary  to make the  statements  therein  not
misleading,  except insofar as such losses,  claims,  damages or liabilities are
caused by any untrue  statement  or alleged  untrue  statement  or  omission  or
alleged omission based upon information furnished or required to be furnished in
writing to the Company by such Seller or underwriter  within the meaning of such
Act; provided, however, that the indemnity agreement set forth in this Section

                                        8
<PAGE>
3.6 with respect to any prospectus which shall be subsequently  amended prior to
the written confirmation of sale of any Shares shall not inure to the benefit of
any  Seller or  underwriter  from whom the  person  asserting  any such  losses,
claims,  damages or  liabilities  purchased  such  Shares  which are the subject
thereof  (or  to  the  benefit  of  any  person   controlling   such  Seller  or
underwriter), if such Seller or underwriter failed to send or give a copy of the
prospectus as amended to such person at or prior to the written  confirmation of
the sale of such  Shares and if such  amended  prospectus  did not  contain  any
untrue  statement or alleged  untrue  statement or omission or alleged  omission
giving rise to such cause, claim, damage, or liability.

                  3.6.2 Each Seller which avails itself of the procedures  under
this Section 3 shall indemnify and secure the agreement of any underwriter which
the Seller employs to indemnify the Company, its directors, each officer signing
the related post-effective  amendment or registration statement and each person,
if any, who controls the Company, within the meaning of the Act from and against
any losses,  claims,  damages, and liabilities caused by any untrue statement or
alleged  untrue  statement of a material  fact  contained in any  post-effective
amendment or  registration  statement or any prospectus  required to be filed or
furnished  by reason of this  Section 3 or  caused by any  omission  or  alleged
omission  to state  therein a material  fact  required  to be stated  therein or
necessary to make the statements therein not misleading, insofar as such losses,
claims,  damages,  or liabilities are caused by any untrue  statement or alleged
untrue  statement  or  omission  or  alleged  omission  based  upon  information
furnished in writing to the Company by any such Seller or underwriter  expressly
for use therein.

         3.7 Survival of  Obligations.  The  agreements  in this Section 3 shall
continue in effect regardless of the exercise and surrender of this Warrant.

                                   SECTION 4.
                                  Other Matters

         4.1 Payment of Taxes.  The Company will from time to time promptly pay,
subject to the provisions of paragraph (4) of Section 1.2 hereof,  all taxes and
charges  that may be imposed  upon the  Company in  respect of the  issuance  or
delivery of this  Warrant or the Shares  purchasable  upon the  exercise of this
Warrant.

         4.2 Binding Effect. All the covenants and provisions of this Warrant by
or for the  benefit of the  Company  shall bind and inure to the  benefit of its
successors and assigns hereunder.

         4.3 Notices. Notices or demands pursuant to this Warrant to be given or
made by the Holder to or on the Company shall be  sufficiently  given or made if
sent by certified or registered mail, return receipt requested, postage prepaid,
or facsimilie and addressed,  until another  address is designated in writing by
the Company, as follows:

                                        9
<PAGE>
                                 M.D. Labs, Inc.
                          1719 W. University, Ste. 187
                              Tempe, Arizona 85281

Notices to the Holder provided for in this Warrant shall be deemed given or made
by the  Company  if  sent  by  certified  or  registered  mail,  return  receipt
requested,  postage  prepaid,  and  addressed  to the  Holder at his last  known
address as it shall appear on the books of the Company.

         4.4 Governing Law. The validity, interpretation and performance of this
Warrant shall be governed by the laws of the State of California.

         4.5 Parties Bound and Benefitted. Nothing in this Warrant expressed and
nothing that may be implied from any of the  provisions  hereof is intended,  or
shall be construed,  to confer upon, or give to, any person or corporation other
than the  Company  and the Holder any right,  remedy or claim  under  promise or
agreement  hereof,  and all covenants,  conditions,  stipulations,  promises and
agreements contained in this Warrant shall be for the sole and exclusive benefit
of the Company and its  successors  and of the Holder,  its  successors  and, if
permitted, its assignees.

         4.6 Headings.  The Section headings herein are for convenience only and
are not part of this Warrant and shall not affect the interpretation thereof.

         IN WITNESS WHEREOF,  this Warrant has been duly executed by the Company
under its corporate seal as of the ___ day of ________, 1996.

                                     M.D. LABS, INC.


                                     By:_______________________________________
                                         Hooman Nikzad, Chief Executive Officer

                                       10
<PAGE>
                                    M.D. LABS

                              Assignment of Warrant


         FOR VALUE  RECEIVED,  Spelman & Co.,  Inc.  hereby  sells,  assigns and
transfers unto  ____________________________________________  the within Warrant
and the rights represented thereby,  and does hereby irrevocably  constitute and
appoint  _______________________________  Attorney,  to transfer said Warrant on
the books of the Company, with full power of substitution.

Dated: _____________________

                                     Signed:___________________________________

Signature guaranteed:




- ----------------------------


                                       11
<PAGE>
                                    M.D. LABS
                          1719 W. University, Ste. 187
                              Tempe, Arizona 85281


               Subscription Agreement for the Exercise of Warrants

         The  undersigned  hereby  irrevocably  subscribes  for the  purchase of
_____________ Shares pursuant to and in accordance with the terms and conditions
of this Warrant,  and herewith makes payment,  covering such Shares which should
be delivered to the undersigned at the address stated below, and, if said number
of  Shares  shall not be all of the  Shares  purchasable  hereunder,  that a new
Warrant  of like  tenor for the  balance  of the  remaining  Shares  purchasable
hereunder be delivered to the undersigned at the address stated below.

         The undersigned  agrees that: (1) the undersigned will not offer, sell,
transfer or otherwise  dispose of any Shares  unless  either (a) a  registration
statement,  or post-effective  amendment  thereto,  covering the Shares has been
filed with the Securities and Exchange Commission pursuant to the Securities Act
of 1933, as amended (the "Act"),  such sale,  transfer or other  disposition  is
accompanied by a prospectus  meeting the  requirements  of Section 10 of the Act
forming  a part of such  registration  statement,  or  post-effective  amendment
thereto,  which is in effect  under the Act  covering  the Shares to be so sold,
transferred or otherwise  disposed of, and all applicable  state securities laws
have been  complied  with,  or (b)  counsel  to M.D.  Labs  satisfactory  to the
undersigned  has rendered an opinion in writing and  addressed to M.D. Labs that
such proposed offer, sale, transfer or other disposition of the Shares is exempt
from the provisions of Section 5 of the Act in view of the circumstances of such
proposed offer, sale,  transfer or other  disposition;  (2) M.D. Labs may notify
the transfer agent for the Shares that the  certificates for the Shares acquired
by the undersigned are not to be transferred  unless the transfer agent receives
advice from M.D. Labs that one or both of the  conditions  referred to in (1)(a)
and (1)(b) above have been satisfied; and (3) M.D. Labs may affix the legend set
forth in Section 3.1 of this Warrant to the  certificates  for the Shares hereby
subscribed for, if such legend is applicable.

Dated: ______________________             Signed:______________________________

Signature guaranteed:                     Address:_____________________________


- -----------------------------             -------------------------------------


                                       12

                              AMENDED AND RESTATED

                          CERTIFICATE OF INCORPORATION

                                       OF

                                 M.D. LABS, INC.

                This amended and restated  Certificate of Incorporation has been
duly adopted in accordance with Section 245 of the Delaware General  Corporation
Law.

                1. Name. The name of the Corporation is M.D. Labs, Inc.

                2.  Registered  Office  and Agent.  The name and  address of the
registered  office and registered  agent of the  Corporation is The  Corporation
Trust Company,  Corporation Trust Center,  1209 Orange Street,  Wilmington,  New
Castle County, Delaware 19801.

                3. Purpose.  The purpose for which this Corporation is organized
is the transaction of any or all lawful activity for which  corporations  may be
organized under the General  Corporation  Law of Delaware,  as it may be amended
from time to time ("GCL").

                4. Authorized Capital. The total number of shares of stock which
the Corporation shall have authority to issue is 8,100,000 shares, consisting of
8,000,000  shares of  common  stock  having a par value of $.001 per share  (the
"Common Stock") and 100,000 shares of preferred stock having a par value of $.01
per share (the "Preferred Stock").

                The Board of Directors  is  authorized,  subject to  limitations
prescribed  by law and the  provisions  of this  Article 4, to  provide  for the
issuance of the shares of Preferred Stock in series, and by filing a certificate
pursuant to the applicable law of the State of Delaware,  to establish from time
to time the number of shares to be included in each such series,  and to fix the
designation,  powers,  preferences  and rights of the shares of each such series
and the qualifications, limitations or restrictions thereof.

                The  authority  of the Board with  respect to each series  shall
include, but not be limited to, determination of the following:

                (a) The  number  of  shares  constituting  that  series  and the
distinctive designation of that series;

                (b) The  dividend  rate on the  shares of that  series,  whether
dividends  shall be  cumulative,  and, if so, from which date or dates,  and the
relative  rights of priority,  if any, of payment of dividends on shares of that
series;
                                       -1-
<PAGE>
                (c)Whether that series shall have voting rights,  in addition to
the voting rights provided by law, and, if so, the terms of such voting rights;

                (d)Whether that series shall have conversion privileges, and, if
so,  the  terms and  conditions  of such  conversion,  including  provision  for
adjustment of the conversion rate in such events as the Board of Directors shall
determine;

                (e)Whether or not the shares of that series shall be redeemable,
and, if so, the terms and conditions of such  redemption,  including the date or
dates upon or after  which they  shall be  redeemable,  and the amount per share
payable in case of redemption,  which amount may vary under different conditions
and at different redemption dates;

                (f)Whether  that  series  shall  have a  sinking  fund  for  the
redemption  or  purchase  of shares of that  series,  and,  if so, the terms and
amount of such sinking fund;

                (g)The  rights  of the  shares  of that  series  in the event of
voluntary  or  involuntary  liquidation,   dissolution  or  winding  up  of  the
Corporation,  and the relative rights of priority,  if any, of payment of shares
of that series; and

                (h)Any other relative  rights,  preferences  and  limitations of
that series.

                5.Classification  and  Terms  of  Directors.  The  business  and
affairs of the  Corporation  shall be managed by or under the  direction  of the
Board of Directors  consisting  of not less than three  directors  nor more than
nine directors, the exact number of directors to be determined from time to time
by resolution adopted by the Board of Directors. Effective as of the 1997 annual
meeting of  stockholders,  the  directors  shall be divided into three  classes,
designated Class I, Class II and Class III. Each class shall consist,  as nearly
as may be possible,  of one-third of the total number of directors  constituting
the entire Board of Directors.  The terms of the initial Class I directors shall
terminate on the date of the 1998 annual meeting of  stockholders;  the terms of
the initial  Class II directors  shall  terminate on the date of the 1999 annual
meeting of stockholders;  and the terms of the initial Class III directors shall
terminate on the date of the 2000 annual meeting of stockholders. At each annual
meeting of stockholders  beginning with the 1997 annual  meeting,  successors to
the class of  directors  whose term  expires  at that  annual  meeting  shall be
elected for a  three-year  term.  If the number of  directors  is  changed,  any
increase or decrease  shall be  apportioned  among the classes so as to maintain
the number of  directors  in each  class as nearly  equal as  possible,  and any
additional  directors of any class elected to fill a vacancy  resulting  from an
increase in such class shall hold office for a term that shall coincide with the
remaining  terms of that class,  but in no case will a decrease in the number of
directors  shorten the term of any  incumbent  director.  A director  shall hold
office until the annual meeting for the year in which his term expires and until
his successor  shall be elected and shall qualify,  subject,  however,  to prior
death,  resignation,  retirement,  disqualification  or removal from office. Any
vacancy on the Board of Directors that results from an increase in the number of
directors may be filled by a majority of the whole Board of
                                       -2-
<PAGE>
Directors,  and any other  vacancy may be filled by a majority of the  directors
then in office, even if less than a quorum, or by a sole remaining director. Any
director  elected  to fill a vacancy  shall  hold  office  for a term that shall
coincide  with the term of the  class to which  such  director  shall  have been
elected.

        Notwithstanding  the foregoing,  whenever the holders of any one or more
classes or series of Preferred  Stock issued by the  Corporation  shall have the
right,  voting separately by class or series, to elect directors at an annual or
special  meeting of  stockholders,  the  election,  term of  office,  filling of
vacancies  and other  features  of such  directorships  shall be governed by the
terms of this  Certificate  of  Incorporation  or the  resolution or resolutions
adopted by the Board of Directors pursuant to Article 4 applicable thereto,  and
such  directors so elected  shall not be divided  into classes  pursuant to this
Article 5 unless expressly provided by such terms.

                6.Removal of  Directors.  Subject to the rights,  if any, of the
holders  of  shares  of  Preferred  Stock  then  outstanding,  any or all of the
directors of the  Corporation  may be removed from office at any time,  but only
for cause and only by the  affirmative  vote of the holders of a majority of the
outstanding  shares of the  Corporation  then entitled to vote  generally in the
election of directors, considered for purposes of this Article 6 as one class.

                7.Election of Directors.  Elections of directors at an annual or
special meeting of stockholders  shall be by written ballot unless the Bylaws of
the  Corporation  shall  otherwise   provide.   Advance  notice  of  stockholder
nominations  for the election of directors shall be given in the manner provided
in the Bylaws of the Corporation.

                8.Special Meetings.  Special meetings of the stockholders of the
Corporation  for any purpose or  purposes  may be called at any time only by the
Chairman of the Board,  the Chief Executive  Officer,  or the Board of Directors
pursuant to a resolution approved by a majority of the whole Board of Directors,
or at the request in writing of stockholders owning twenty-five percent (25%) or
more in amount of the capital stock issued and outstanding and entitled to vote.
Special  meetings of the  stockholders  may not be called by any other person or
persons. Business transacted at any special meeting of the stockholders shall be
limited to the purposes stated in the notice of such meeting.

                9.Special Voting Requirements.

                A.Except  as set  forth  in  Section  B of this  Article  9, the
affirmative  vote of the holders of two-thirds of the  outstanding  stock of the
Corporation entitled to vote shall be required for:

                       (l)any merger or  consolidation to which the Corporation,
or any of its subsidiaries,  and an Interested  Person (as hereinafter  defined)
are parties;
                                       -3-
<PAGE>
                       (2)any sale or other  disposition by the Corporation,  or
any  of  its  subsidiaries,  of all or  substantially  all of its  assets  to an
Interested Person;

                       (3)any purchase or other  acquisition by the Corporation,
or any of its  subsidiaries,  of all or substantially all of the assets or stock
of an Interested Person; and

                       (4)any other  transaction with an Interested Person which
requires the approval of the  stockholders of the Corporation  under the GCL, as
in effect from time to time.

                B.The  provisions  of  Section A of this  Article 9 shall not be
applicable to any transaction  described therein if such transaction is approved
by resolution of the Corporation's Board of Directors,  provided that a majority
of the  members  of the  Board of  Directors  voting  for the  approval  of such
transaction are Continuing Directors.  The term "Continuing Director" shall mean
any  member  of the  Board  of  Directors  of  the  Corporation  who is not  the
Interested Person, and not an affiliate, associate, representative or nominee of
the Interested Person or of such an affiliate or associate,  that is involved in
the  relevant  transaction,  and (A) was a member of the Board of  Directors  on
September  4, 1996 or (B) was a member of the  Board of  Directors  prior to the
date that the person, firm or corporation,  or any group thereof, with whom such
transaction  is proposed,  became an  Interested  Person,  or (C) whose  initial
election as a director of the Corporation succeeds a Continuing Director or is a
newly created  directorship,  and in either case was  recommended  by a majority
vote of the Continuing Directors then in office.

                C.As used in this Article 9, the term "Interested  Person" shall
mean any person, firm or corporation,  or any group thereof, acting or intending
to act in concert,  including any person  directly or indirectly  controlling or
controlled by or under direct or indirect common control with such person,  firm
or  corporation  or group,  which owns of record or  beneficially,  directly  or
indirectly,  five percent (5%) or more of any class of voting  securities of the
Corporation; except that the term "Interested Person" shall not mean or apply to
a person, firm or corporation which owned of record or beneficially  twenty-five
percent (25%) or more of any class of voting  securities of the  Corporation  at
the effective time of the merger of Houston International, Inc., LLC, an Arizona
limited liability company, into the Corporation.

                10.Limitation of Liability. No director of the Corporation shall
be personally liable to the Corporation or its stockholders for monetary damages
for  any  breach  of   fiduciary   duty  by  such  a  director  as  a  director.
Notwithstanding the foregoing sentence, a director shall be liable to the extent
provided by applicable law (i) for any breach of the director's  duty of loyalty
to the Corporation or its  stockholders,  (ii) for acts or omissions not in good
faith or which involve  intentional  misconduct  or a knowing  violation of law,
(iii) pursuant to Section 174 of the GCL, or (iv) for any transaction from which
such director derived an improper personal benefit. No amendment to or repeal of
this  Article 10 shall  apply to or have an effect on the  liability  or alleged
liability of any director of the  Corporation for or with respect to any acts or
omissions of such director occurring prior to such amendment or repeal.
                                       -4-
<PAGE>
                11. Bylaws.  In furtherance  and not in limitation of the powers
conferred by statute, the Board of Directors is expressly authorized by majority
vote of the whole Board of Directors to adopt,  repeal,  alter, amend or rescind
the Bylaws of the Corporation. In addition, the Bylaws of the Corporation may be
adopted,  repealed,  altered,  amended,  or rescinded by the affirmative vote of
two-thirds of the outstanding stock of the Corporation entitled to vote thereon;
provided,  if the  Continuing  Directors,  as  defined  in Article 9, shall by a
two-thirds favorable vote of such Continuing Directors have adopted a resolution
approving the amendment or repeal  proposal and have  determined to recommend it
for  approval by the holders of stock  entitled to vote  thereon,  then the vote
required shall be the affirmative  vote of the holders of at least a majority of
the outstanding shares entitled to vote thereon.

                12. Action by Consent of  Stockholders.  Any action  required or
permitted to be taken by the stockholders  must be effected at a duly called and
noticed annual or special meeting of such  stockholders  and may not be effected
by any consent in writing by such stockholders.

                13.  Certificate.  The Corporation  reserves the right to amend,
alter,  change  or  repeal  any  provision  contained  in  this  Certificate  of
Incorporation  in the  manner now or  hereafter  prescribed  by statute  and the
Certificate of  Incorporation,  and all rights conferred on stockholders  herein
are granted subject to the reservations in this Article 13;  provided,  however,
the affirmative  vote of the holders of at least  two-thirds of the voting power
of the outstanding  stock of the  Corporation  entitled to vote thereon shall be
required to alter,  amend,  or adopt any provision  inconsistent  with or repeal
Articles  5, 6, 7, 8, 9,  10,  11,  12 and this  Article  13;  provided,  if the
Continuing  Directors,  as defined in Article 9, shall by a two-thirds favorable
vote of such  Continuing  Directors  have  adopted a  resolution  approving  the
amendment or repeal proposal and have determined to recommend it for approval by
the holders of stock  entitled to vote thereon,  then the vote required shall be
the  affirmative  vote of the holders of at least a majority of the  outstanding
shares entitled to vote thereon.
                                       -5-

                              AMENDED AND RESTATED

                                    BYLAWS OF

                                 M.D. LABS, INC.

                                    ARTICLE I

                                     OFFICES
SECTION 1.1  Registered Office.
             ------------------

         The registered office of the Corporation in the State of Delaware shall
be in the City of Wilmington, County of New Castle, State of Delaware.

SECTION 1.2  Other Offices.
             --------------

         The Corporation  also may have offices at such other places both within
and without the State of  Delaware  as the Board of  Directors  may from time to
time determine or the business of the Corporation may require.

                                   ARTICLE II

                                  STOCKHOLDERS

SECTION 2.1  Stockholder Meetings.
             ---------------------

         (a) Time and Place of Meetings.  Meetings of the stockholders  shall be
held at such times and places,  either  within or without the State of Delaware,
as may from time to time be fixed by the Board of  Directors  and  stated in the
notices or waivers of notice of such meetings.

         (b) Annual  Meeting.  The annual meeting of the  stockholders  shall be
held when  designated by the Board of  Directors,  for the election of directors
and the transaction of such other business  properly  brought before such annual
meeting of the stockholders and within the powers of the stockholders.

         (c)  Special  Meetings.  Special  meetings of the  stockholders  of the
Corporation  for any purpose or  purposes  may be called at any time only by the
Chairman of the Board,  the Chief Executive  Officer,  or the Board of Directors
pursuant to a resolution approved by a majority of the whole Board of Directors,
or at the request in writing of shareholders  owning at least 25% of the capital
stock issued and outstanding and entitled
<PAGE>
to vote. Business transacted at any special meeting of the stockholders shall be
limited to the purposes stated in the notice of such meeting.

         (d)  Notice of  Meetings.  Except as  otherwise  provided  by law,  the
Certificate of Incorporation or these Bylaws,  written notice of each meeting of
the stockholders  shall be given not less than ten days nor more than sixty days
before the date of such meeting to each  stockholder  entitled to vote  thereat,
directed  to such  stockholder's  address  as it  appears  upon the books of the
Corporation,  such  notice to  specify  the  place,  date,  hour and  purpose or
purposes of such  meeting.  If mailed,  such notice  shall be deemed to be given
when  deposited in the United  States mail,  postage  prepaid,  addressed to the
stockholder at his address as it appears on the stock ledger of the Corporation.
When a meeting of the  stockholders  is adjourned to another time and/or  place,
notice need not be given of such adjourned meeting if the time and place thereof
are announced at the meeting of the  stockholders  at which the  adjournment  is
taken,  unless the  adjournment is for more than thirty days or unless after the
adjournment  a new record  date is fixed for such  adjourned  meeting,  in which
event a notice of such adjourned  meeting shall be given to each  stockholder of
record  entitled to vote thereat.  Notice of the time,  place and purpose of any
meeting of the stockholders may be waived in writing either before or after such
meeting and will be waived by any stockholder by such  stockholder's  attendance
thereat  in person or by proxy.  Any  stockholder  so  waiving  notice of such a
meeting shall be bound by the proceedings of any such meeting in all respects as
if due notice thereof had been given.

         (e) Quorum.  Except as otherwise  required by law, the  Certificate  of
Incorporation  or these  Bylaws,  the holders of not less than a majority of the
shares entitled to vote at any meeting of the stockholders, present in person or
by proxy,  shall constitute a quorum and the affirmative vote of the majority of
such quorum shall be deemed the act of the stockholders.  If a quorum shall fail
to attend any meeting of the stockholders, the presiding officer of such meeting
may  adjourn  such  meeting  from time to time to another  place,  date or time,
without  notice  other  than  announcement  at such  meeting,  until a quorum is
present or represented.  At such adjourned  meeting at which a quorum is present
or  represented,  any business may be transacted that might have been transacted
at  the  meeting  of the  stockholders  as  originally  noticed.  The  foregoing
notwithstanding,   if  a  notice  of  any  adjourned   special  meeting  of  the
stockholders is sent to all  stockholders  entitled to vote thereat which states
that such adjourned special meeting will be held with those present in person or
by proxy constituting a quorum, then, except as otherwise required by law, those
present at such adjourned special meeting of the stockholders shall constitute a
quorum and all matters  shall be  determined  by a majority of the votes cast at
such special meeting.

SECTION 2.2 Determination of Stockholders Entitled to Notice and to Vote.
            -------------------------------------------------------------

         To determine the stockholders  entitled to notice of any meeting of the
stockholders  or to vote  thereat,  the Board of Directors  may fix in advance a
record date
                                       -2-
<PAGE>
as provided in Article VII, Section 7.1 of these Bylaws, or if no record date is
fixed by the Board of  Directors,  a record date shall be determined as provided
by law.

SECTION 2.3 Voting.
        -----------

         (a)  Except  as  otherwise   required  by  law,  the   Certificate   of
Incorporation or these Bylaws, each stockholder present in person or by proxy at
a meeting of the stockholders  shall be entitled to one vote for each full share
of stock  registered  in the name of such  stockholder  at the time fixed by the
Board  of  Directors  or by law at  the  record  date  of the  determination  of
stockholders entitled to vote at such meeting.

         (b) Every stockholder entitled to vote at a meeting of the stockholders
may do so either  (i) in person or (ii) by one or more  agents  authorized  by a
written  proxy  executed  by the person or such  stockholder's  duly  authorized
agent,  whether by manual signature,  typewriting,  telegraphic  transmission or
otherwise as permitted by law. No proxy shall be voted on after three years from
its date, unless the proxy provides for a longer period.

         (c) Voting may be by voice or by ballot as the presiding officer of the
meeting of the stockholders  shall determine.  On a vote by ballot,  each ballot
shall be signed by the stockholder  voting, or by such stockholder's  proxy, and
shall state the number of shares voted.

         (d) In advance of or at any meeting of the  stockholders,  the Chairman
of the Board or President  shall  appoint one or more persons as  inspectors  of
election (the  "Inspectors") to act at such meeting.  Such Inspectors shall take
charge of the ballots at such meeting. After the balloting, the Inspectors shall
count the  ballots  cast and make a  written  report  to the  secretary  of such
meeting of the results. Subject to the direction of the chairman of the meeting,
the  duties  of  such  Inspectors  may  further   include  without   limitation:
determining  the number of shares  outstanding and the voting power of each; the
shares represented at the meeting;  the existence of a quorum; the authenticity,
validity, and effect of proxies;  receiving votes, ballots, or consents; hearing
and  determining  all  challenges and questions in any way arising in connection
with the  right to vote;  counting  and  tabulating  all votes of  consents  and
determining when the polls shall close;  determining the result;  and doing such
acts as may be proper to  conduct  the  election  or vote with  fairness  to all
stockholders.  An Inspector need not be a stockholder of the Corporation and any
officer of the Corporation may be an Inspector on any question other than a vote
for or against such officer's  election to any position with the  Corporation or
on any other  questions  in which such  officer may be directly  interested.  If
there are three or more Inspectors, the determination,  report or certificate of
a majority of such Inspectors  shall be effective as if unanimously  made by all
Inspectors.
                                       -3-
<PAGE>
SECTION 2.4  List of Stockholders.
             ---------------------

         The officer who has charge of the stock ledger of the Corporation shall
prepare  and  make  available,  at  least  ten  days  before  every  meeting  of
stockholders,  a complete  list of the  stockholders  entitled to vote  thereat,
arranged in alphabetical order,  showing the address of and the number of shares
registered in the name of each such stockholder.  Such list shall be open to the
examination of any stockholder,  for any purpose germane to such meeting, either
at a place  within  the city where  such  meeting is to be held and which  place
shall be specified in the notice of such meeting,  or, if not so  specified,  at
the place where such meeting is to be held.  The list also shall be produced and
kept at the time and place of the meeting of the  stockholders  during the whole
time thereof, and may be inspected by any stockholder who is present.

SECTION 2.5  Action by Consent of Stockholders.
             ----------------------------------

         Any action required or permitted to be taken by the  stockholders  must
be effected at a duly called annual or special meeting of such  stockholders and
may not be effected by any consent in writing by such stockholders.

SECTION 2.6 Conduct of Meetings.
            --------------------

         The chairman of the meeting  shall have full and complete  authority to
determine the agenda,  to set the  procedures and order the conduct of meetings,
all as deemed  appropriate by such person in his sole discretion with due regard
to the orderly conduct of business.

SECTION 2.7  Notice of Agenda Matters.
             -------------------------

         If a stockholder  wishes to present to the Chairman of the Board or the
President  an  item  for  consideration  as an  agenda  item  for a  meeting  of
stockholders, he must give timely notice to the Secretary of the Corporation and
give a description of (i) the business  desired to be brought before the meeting
and (ii) all  arrangements or  understandings  between such  stockholder and any
other person or persons  (including their names) in connection with the proposal
of business by such  stockholder and any material  interest of such  stockholder
and such other person(s) in such business.  To be timely, a stockholder's notice
must be delivered to or mailed and received at the principal  executive  offices
of the Corporation,  not less than sixty days nor more than ninety days prior to
the meeting;  provided,  however, that in the event that less than seventy days'
notice or prior public disclosure of the date of the meeting is given or made to
stockholders,  notice by the  stockholder  to be timely must be so received  not
later than the close of  business on the  fifteenth  day  following  the date on
which  such  notice  of the  date of the  meeting  was  mailed  or  such  public
disclosure was made,  whichever is earlier,  and provided further that any other
time period necessary to comply with federal proxy  solicitation  rules or other
regulations shall be deemed to be timely.
                                       -4-
<PAGE>
                                   ARTICLE III

                               BOARD OF DIRECTORS

SECTION 3.1  General Powers.
             ---------------

         Unless otherwise restricted by law, the Certificate of Incorporation or
these  Bylaws  as to  action  which  shall  be  authorized  or  approved  by the
stockholders,  and subject to the duties of  directors  as  prescribed  by these
Bylaws,  all  corporate  powers shall be exercised by or under the authority of,
and the  business and affairs of the  Corporation  shall be  controlled  by, the
Board of Directors.

SECTION 3.2  Election of Directors.
             ----------------------

         (a) Number,  Qualification and Term of Office. The authorized number of
directors  of the  Corporation  shall be fixed from time to time by a resolution
duly  adopted by a majority  of the whole Board of  Directors,  but shall not be
less than three nor more than nine.

         (b) Resignation. Any director may resign from the Board of Directors at
any time by giving written notice to the Secretary of the Corporation.  Any such
resignation shall take effect at the time specified therein, or if the time when
such  resignation  shall become  effective shall not be so specified,  then such
resignation  shall take effect  immediately  upon its receipt by the  Secretary;
and, unless  otherwise  specified  therein,  the acceptance of such  resignation
shall not be necessary to make it effective.

         (c) Nomination of Directors. Candidates for director of the Corporation
shall be nominated only either by:

                  (i) the Board of  Directors  or a committee  appointed  by the
         Board of Directors, or

                  (ii) nomination at any  stockholders'  meeting by or on behalf
         of any  stockholder  entitled to vote thereat;  provided,  that written
         notice  of  such  stockholder's  intent  to  make  such  nomination  or
         nominations  shall have been given,  either by personal  delivery or by
         United States certified mail, postage prepaid,  to the Secretary of the
         Corporation  not later than (l) with  respect to an election to be held
         at an annual meeting of the stockholders,  not less than sixty days nor
         more than ninety days prior to the meeting; provided,  however, that in
         the  event  that  less  than  seventy  days'  notice  or  prior  public
         disclosure of the date of the meeting is given or made to stockholders,
         notice by the  stockholder  to be timely must be so received  not later
         than the close of business on the  fifteenth  day following the date on
         which such notice of the date of the meeting was 
                                      -5-
<PAGE>
         mailed or such public  disclosure was made,  whichever is earlier,  and
         (2) with respect to an election to be held at a special  meeting of the
         stockholders  for the election of  directors,  the close of business on
         the  fifteenth  day  following the date on which notice of such special
         meeting is first given to the stockholders  entitled to vote thereat or
         public disclosure of the meeting date is made,  whichever occurs first.
         Each such  notice by a  stockholder  shall set forth:  (l) the name and
         address of the (A)  stockholder  who intends to make the nomination and
         (B) person or persons to be nominated;  (2) a  representation  that the
         stockholder is a holder of record of stock of the Corporation  entitled
         to vote at such  meeting and intends to appear in person or by proxy at
         the meeting to nominate the person or persons  specified in the notice;
         (3) a description of all  arrangements  or  understandings  between the
         stockholder  and each nominee and any other  person or persons  (naming
         such person or persons) pursuant to which the nomination or nominations
         are to be made by the stockholder; (4) such other information regarding
         each nominee  proposed by such  stockholder  as would be required to be
         included in a proxy or information  statement filed with the Securities
         and Exchange  Commission  pursuant to the proxy rules promulgated under
         the  Securities  Exchange  Act of 1934,  as amended,  or any  successor
         statute  thereto,  had the nominee  been  nominated,  or intended to be
         nominated,  by the  Board of  Directors;  and (5) the  manually  signed
         consent of each nominee to serve as a director of the Corporation if so
         elected.  The presiding  officer of the meeting of the stockholders may
         refuse to acknowledge  the nominee of any person not made in compliance
         with the foregoing procedure.

         (d) Preferred Stock Provisions. Notwithstanding the foregoing, whenever
the  holders  of any one or more  classes  or  series  of  stock  issued  by the
Corporation  having a  preference  over the Common Stock as to dividends or upon
liquidation shall have the right, voting separately by class or series, to elect
directors at an annual or special  meeting of the  stockholders,  the  election,
term of office,  filling of  vacancies,  nomination,  terms of removal and other
features of such directorships  shall be governed by the terms of the Article of
the  Certificate  of  Incorporation  authorizing  the  preferred  stock  and the
resolution or resolutions  establishing  such class or series  adopted  pursuant
thereto.


SECTION 3.3 Meetings of the Board of Directors.
            -----------------------------------

         (a) Regular Meetings.  Regular meetings of the Board of Directors shall
be held without call at the following times:

                  (i) at such times as the Board of Directors shall from time to
time by resolution determine; and
                                       -6-
<PAGE>
                  (ii)  one-half  hour  prior  to  any  special  meeting  of the
stockholders and immediately  following the adjournment of any annual or special
meeting of the stockholders.

Notice of all such regular meetings hereby is dispensed with.

         (b) Special Meetings. Special meetings of the Board of Directors may be
called by the Chairman,  the Chief Executive Officer,  or the Board of Directors
pursuant to a resolution approved by a majority of the whole Board of Directors.
Notice of the time and place of special meetings of the Board of Directors shall
be given by the Secretary or an Assistant  Secretary of the  Corporation,  or by
any person or entity  entitled to call such meeting.  Such notice shall be given
to each  director  personally  or by mail,  messenger,  telecopy,  telephone  or
telegraph at such director's business or residence address. Notice by mail shall
be deposited  in the United  States mail,  postage  prepaid,  not later than the
fifth day prior to the date fixed for such special meeting.  Notice by telecopy,
telephone  or  telegraph  shall be  sent,  and  notice  given  personally  or by
messenger shall be delivered,  at least  twenty-four hours prior to the time set
for such special meeting.  Notice of a special meeting of the Board of Directors
need not contain a statement of the purpose of such special meeting.

         (c) Adjourned Meetings.  A majority of directors present at any regular
or special meeting of the Board of Directors or any committee  thereof,  whether
or not constituting a quorum,  may adjourn any meeting from time to time until a
quorum is present  or  otherwise.  Notice of the time and place of  holding  any
adjourned  meeting  shall not be required if the time and place are fixed at the
meeting adjourned.

         (d) Place of Meetings. Meetings of the Board of Directors, both regular
and special, may be held within or without the State of Delaware.

         (e)  Participation  by Telephone.  Members of the Board of Directors or
any  committee  may  participate  in any  meeting of the Board of  Directors  or
committee  through the use of  conference  telephone  or similar  communications
equipment,  so long as all members  participating  in such  meeting can hear one
another,  and such  participation  shall  constitute  presence in person at such
meeting.

         (f) Quorum.  At all meetings of the Board of Directors or any committee
thereof,  a  majority  of the  total  number of  directors  of the  entire  then
authorized  Board of Directors or such committee  shall  constitute a quorum for
the  transaction of business and the act of a majority of the directors  present
at any such  meeting at which there is a quorum shall be the act of the Board of
Directors or any committee,  except as may be otherwise specifically provided by
law, the Certificate of Incorporation or these Bylaws. A meeting of the Board of
Directors or any  committee at which a quorum  initially is present may continue
to transact business notwithstanding the withdrawal of directors so
                                       -7-
<PAGE>
long as any action is approved by at least a majority of the required quorum for
such meeting.

         (g) Waiver of Notice.  The  transactions of any meeting of the Board of
Directors or any  committee  for which notice is  required,  however  called and
noticed or wherever held, shall be as valid as though had at a meeting duly held
after  regular call and notice,  if a quorum be present and if, either before or
after the meeting,  each of the directors not present signs a written  waiver of
notice,  or a consent  to hold  such  meeting,  or an  approval  of the  minutes
thereof.  All such  waivers,  consents  or  approvals  shall  be filed  with the
corporate records or made a part of the minutes of the meeting.

SECTION 3.4  Action Without Meeting.
             -----------------------

         Any action  required or permitted to be taken by the Board of Directors
at any meeting or at any meeting of a committee  may be taken  without a meeting
if all members of the Board of  Directors or such  committee  consent in writing
and the writing or writings are filed with the minutes of the proceedings of the
Board of Directors or such committee.

SECTION 3.5  Compensation of Directors.
             --------------------------

         Unless otherwise restricted by law, the Certificate of Incorporation or
these  Bylaws,  the  Board of  Directors  shall  have the  authority  to fix the
compensation of directors.  The directors may be paid their expenses, if any, of
attendance at each meeting of the Board of Directors and may be paid a fixed sum
for  attendance  at each meeting of the Board of Directors or a stated salary as
director.  No  such  payment  shall  preclude  any  director  from  serving  the
Corporation in any other capacity and receiving compensation  therefor.  Members
of  committees of the Board of Directors  may be allowed like  compensation  for
attending committee meetings.

SECTION 3.6  Committees of the Board.
             ------------------------

         (a) Committees.  The Board of Directors may, by resolution adopted by a
majority of the Board of  Directors,  designate  one or more  committees  of the
Board of Directors,  each  committee to consist of one or more  directors.  Each
such committee, to the extent permitted by law, the Certificate of Incorporation
and these Bylaws, shall have and may exercise such of the powers of the Board of
Directors in the management and affairs of the  Corporation as may be prescribed
by the resolutions  creating such committee.  Such committee or committees shall
have such  name or names as may be  determined  from time to time by  resolution
adopted by the Board of  Directors.  The Board of Directors may designate one or
more directors as alternate members of any committee, who may replace any absent
or  disqualified  member at any  meeting  of the  committee.  In the  absence or
disqualification  of a member of a  committee,  the  member or  members  thereof
present at any meeting and not disqualified from voting, whether or
                                       -8-
<PAGE>
not he or they constitute a quorum,  may  unanimously  appoint another member of
the Board of  Directors to act at the meeting in the place of any such absent or
disqualified  member.  The Board of Directors  shall have the power, at any time
for any reason, to change the members of any such committee,  to fill vacancies,
and to discontinue any such committee.

         (b) Minutes of Meetings.  Each committee  shall keep regular minutes of
its meetings and report the same to the Board of Directors when required.

         (c) Audit  Committee.  The Board of  Directors  shall  appoint an Audit
Committee  consisting of at least two directors,  neither of which two directors
shall be  employees of the  Corporation.  The Audit  Committee  shall review the
financial  affairs  and  procedures  of the  Corporation  from time to time with
management and meet with the auditors of the Corporation to review the financial
statements and procedures.

         (d) Executive Committee. There may be an executive committee consisting
of at least three members of the Board of Directors  elected by the whole Board.
Members of the executive  committee  shall serve at the pleasure of the Board of
Directors  and each member of the  executive  committee  may be removed  with or
without cause at any time by the Board of Directors.  Vacancies  shall be filled
by the Board of Directors.  The  executive  committee may exercise the powers of
the Board of  Directors  and the  management  of the business and affairs of the
corporation, but shall not possess any authority prohibited to it by law.

SECTION 3.7 Interested Directors.
            ---------------------

         In addition to the statutory and corporate  common law of Delaware,  no
contract or transaction between the Corporation and one or more of its directors
or officers, or between the Corporation and any other corporation,  partnership,
association,  or other  organization  in which one or more of its  directors  or
officers are directors or officers, or have a financial interest,  shall be void
or voidable solely for this reason, or solely because the director or officer is
present at or participates in the meeting of the Board of Directors or committee
thereof which  authorizes the contract or transaction,  or solely because his or
their votes are counted for such purpose if (i) the material  facts as to his or
their  relationship  or  interest  and as to the  contract  or  transaction  are
disclosed or are known to the Board of Directors or the committee, and the Board
of Directors or committee in good faith  authorizes  the contract or transaction
by the  affirmative  votes of a majority of the  disinterested  directors,  even
though the  disinterested  directors be less than a quorum; or (ii) the material
facts as to his or their  relationship  or  interest  and as to the  contract or
transaction  are  disclosed  or are known to the  stockholders  entitled to vote
thereon, and the contract or transaction is specifically  approved in good faith
by vote of the stockholders;  or (iii) the contract or transaction is fair as to
the  Corporation as of the time it is authorized,  approved or ratified,  by the
Board  of  Directors,  a  committee  thereof  or  the  stockholders.  Common  or
interested directors may be counted
                                       -9-
<PAGE>
in  determining  the presence of a quorum at a meeting of the Board of Directors
or of a committee which authorizes the contract or transaction.


                                   ARTICLE IV

                                    OFFICERS

SECTION 4.1  Officers.
             ---------

         (a)  Number.  The  officers of the  Corporation  shall be chosen by the
Board of Directors  and may include a Chair of the Board of Directors  (who must
be a director  as chosen by the Board of  Directors)  and shall  include a Chief
Executive  Officer,  a  President,  a Secretary  and a  Treasurer.  The Board of
Directors also may appoint one or more Vice Presidents, Chief Financial Officer,
Assistant Secretaries or Assistant Treasurers and such other officers and agents
with such powers and duties as it shall deem  necessary.  Any Vice President may
be given such specific designation as may be determined from time to time by the
Board of Directors. Any number of offices may be held by the same person, unless
otherwise required by law, the Certificate of Incorporation or these Bylaws. The
Board of Directors  may  delegate to any other  officer of the  Corporation  the
power to choose such other officers and to prescribe their respective duties and
powers.

         (b) Election and Term of Office. The officers shall be elected annually
by the Board of  Directors  at its annual  meeting and each  officer  shall hold
office  until the next  annual  election of  officers  and until such  officer's
successor is elected and qualified,  or until such officer's death,  resignation
or removal.  Any officer may be removed at any time, with or without cause, by a
vote of the majority of the whole Board of Directors.  Any vacancy  occurring in
any office may be filled by the Board of Directors.

         (c) Salaries.  The salaries of all officers of the Corporation shall be
fixed by the Board of Directors or a committee thereof from time to time.

SECTION 4.2 Chair of the Board of Directors.
            --------------------------------

         The Chair of the Board of Directors, if there be a Chair, shall preside
at all meetings of the  stockholders  and the Board of Directors  and shall have
such other power and authority as may from time to time be assigned by the Board
of Directors.

SECTION 4.3  Chief Executive Officer.
             ------------------------

         The Chief  Executive  Officer  shall  preside  at all  meetings  of the
stockholders  and the Board of  Directors  (if a Chair of the Board has not been
elected),  and  shall  see that  all  orders  and  resolutions  of the  Board of
Directors are carried into effect. Subject to the
                                      -10-
<PAGE>
provisions of these Bylaws and to the  direction of the Board of Directors,  the
Chief  Executive  Officer  shall have the general and active  management  of the
business  of the  Corporation,  may  execute all  contracts  and any  mortgages,
conveyances  or other  legal  instruments  in the name of and on  behalf  of the
Corporation, but this provision shall not prohibit the delegation of such powers
by the Board of Directors to some other officer,  agent or  attorney-in-fact  of
the Corporation.

SECTION 4.4  President.
             ----------

         In the  absence  or  disability  of the Chief  Executive  Officer,  the
President shall perform all the duties of the Chief Executive Officer,  and when
so acting  shall have all the powers of, and be subject to all the  restrictions
upon, the Chief  Executive  Officer.  The President shall have such other powers
and  perform  such other  duties as from time to time may be  prescribed  by the
Board of Directors or these Bylaws.

SECTION 4.5  Vice Presidents.
             ----------------

         In the absence or  disability  of the Chief  Executive  Officer and the
President,  the Vice  Presidents in order of their rank as fixed by the Board of
Directors,  or if not  ranked,  the Vice  President  designated  by the Board of
Directors,  shall  perform all the duties of the  President,  and when so acting
shall have all the powers of, and be subject to all the  restrictions  upon, the
President.  The Vice  Presidents  shall have such other  powers and perform such
other duties as from time to time may be prescribed for them,  respectively,  by
the Board of Directors or these Bylaws.

SECTION 4.6  Secretary and Assistant Secretaries.
             ------------------------------------

         The Secretary  shall record or cause to be recorded,  in books provided
for the  purpose,  minutes of the  meetings  of the  stockholders,  the Board of
Directors and all committees of the Board of Directors; see that all notices are
duly given in accordance with the provisions of these Bylaws as required by law;
be custodian of all corporate  records (other than financial) and of the seal of
the Corporation, and have authority to affix the seal to all documents requiring
it and attest to the same; give, or cause to be given, notice of all meetings of
the  stockholders  and  special  meetings  of the Board of  Directors;  and,  in
general,  shall perform all duties  incident to the office of Secretary and such
other  duties as may,  from  time to time,  be  assigned  to him by the Board of
Directors  or by the  President.  At the  request  of the  Secretary,  or in the
Secretary's absence or disability,  any Assistant Secretary shall perform any of
the duties of the Secretary  and, when so acting,  shall have all the powers of,
and be subject to all the restrictions upon, the Secretary.
                                      -11-
<PAGE>
SECTION 4.7  Treasurer and Assistant Treasurers.
             -----------------------------------

         The  Treasurer  shall  keep or cause to be kept the books of account of
the  Corporation  and shall render  statements of the  financial  affairs of the
Corporation  in such form and as often as required by the Board of  Directors or
the President.  The  Treasurer,  subject to the order of the Board of Directors,
shall have  custody of all funds and  securities  of the  Corporation  and shall
deposit all moneys and other  valuable  effects in the name and to the credit of
the  Corporation  in such  depositories  as may be  designated  by the  Board of
Directors.  He shall disburse the funds of the  Corporation as may be ordered by
the Board of  Directors,  taking  proper  vouchers for such  disbursements.  The
Treasurer  shall  perform all other duties  commonly  incident to his office and
shall  perform  such other  duties  and have such  other  powers as the Board of
Directors or the President  shall designate from time to time. At the request of
the  Treasurer,  or in the  Treasurer's  absence or  disability,  any  Assistant
Treasurer  may perform any of the duties of the  Treasurer  and, when so acting,
shall have all the powers of, and be subject to all the  restrictions  upon, the
Treasurer.  Except where by law the signature of the Treasurer is required, each
of the  Assistant  Treasurers  shall  possess the same power as the Treasurer to
sign all  certificates,  contracts,  obligations  and other  instruments  of the
Corporation.

SECTION 4.8  Chief Financial Officer.
             ------------------------

         The Chief  Financial  Officer  shall  have the  responsibility  for the
accounting  procedures and practices of the  Corporation and shall keep or cause
to be kept at the principal office of the Corporation,  and shall be responsible
for the keeping of, correct  financial  records of the business and transactions
of the Corporation and at all reasonable times shall exhibit such records to any
of the  directors  of the  Corporation  upon  application  at the  office of the
Corporation  where such  records are kept.  He shall also perform all the duties
incident to the office of Chief Financial  Officer and such other duties as from
time to time  may be  assigned  to him by the  Board  of  Directors,  the  Chief
Executive Officer or the President.


                                    ARTICLE V

                          INDEMNIFICATION AND INSURANCE

SECTION 5.1 Right to Indemnification.
            -------------------------

         Subject to the terms and  conditions of this Article V, each officer or
director  of the  Corporation  who  was or is  made a  party  or  witness  or is
threatened  to be made a party or witness  to or is  otherwise  involved  in any
threatened,  pending or completed  action,  suit or  proceeding,  whether civil,
criminal,  administrative  or  investigative  (hereinafter a  "proceeding"),  by
reason of the fact that he or she is or was a director or
                                      -12-
<PAGE>
officer  of  the  Corporation  or is or  was  serving  at  the  request  of  the
Corporation as a director,  officer, employee or agent of another corporation or
of a partnership,  joint venture,  trust or other enterprise,  including service
with respect to employee benefit plans  (hereinafter an  "indemnitee"),  whether
the basis of such  proceeding  is  alleged  action or  inaction  in an  official
capacity  while  serving as a director,  officer,  employee  or agent,  shall be
indemnified  and  held  harmless  by  the  Corporation  to  the  fullest  extent
authorized by the Delaware General Corporation Law ("DGCL"),  as the same exists
or may hereafter be amended (but, in the case of any such amendment, only to the
extent  that  such  amendment   permits  the   Corporation  to  provide  broader
indemnification  rights than such law permitted the Corporation to provide prior
to  such  amendment),   against  all  expense,  liability  and  loss  (including
attorneys' fees,  judgments,  fines, ERISA excise taxes or penalties and amounts
paid in  settlement)  reasonably  incurred  or suffered  by such  indemnitee  in
connection therewith and such indemnification shall continue as to an indemnitee
who has ceased to be a director,  officer,  employee or agent and shall inure to
the benefit of the indemnitee's heirs,  executors and administrators;  provided,
however,  that, except as provided herein with respect to proceedings to enforce
rights to  indemnification,  the Corporation shall indemnify any such indemnitee
in connection  with a proceeding (or part thereof)  initiated by such indemnitee
only if such  proceeding  (or  part  thereof)  was  authorized  by the  Board of
Directors of the  Corporation.  The right to  indemnification  conferred in this
Section  shall  include  the right to be paid by the  Corporation  the  expenses
incurred in defending any such  proceeding  in advance of its final  disposition
(hereinafter an "advancement of expenses"); provided, however, that, if the DGCL
requires,  an  advancement of expenses  incurred by an indemnitee  shall be made
only  upon  delivery  to the  Corporation  of an  undertaking  in the form  then
required by the DGCL (if any), by or on behalf of such indemnitee,  with respect
to the repayment of amounts so advanced (hereinafter an "undertaking").

SECTION 5.2 Right of Indemnitee to Bring Suit.
            ----------------------------------

         If a claim under Section 5.1 of this Article is not paid in full by the
Corporation  within  sixty days after a written  claim has been  received by the
Corporation,  except in the case of a claim for an advancement  of expenses,  in
which case the applicable period shall be twenty days, the indemnitee may at any
time thereafter  bring suit against the Corporation to recover the unpaid amount
of the claim.  If  successful  in whole or in part in any such suit or in a suit
brought by the Corporation to recover an advancement of expenses pursuant to the
terms of an  undertaking,  the indemnitee  shall be entitled to be paid also the
expenses of  prosecuting  or defending such suit. In (i) any suit brought by the
indemnitee to enforce a right to  indemnification  hereunder  (but not in a suit
brought by the  indemnitee to enforce a right to an  advancement of expenses) it
shall be a defense  that,  and (ii) any suit by the  Corporation  to  recover an
advancement of expenses  pursuant to the terms of an undertaking the Corporation
shall be entitled to recover such expenses upon a final  adjudication  that, the
indemnitee has not met the applicable standard of conduct set forth in the DGCL.
Neither  the  failure  of the  Corporation  (including  its Board of  Directors,
independent legal counsel, or its stockholders) to have made a
                                      -13-
<PAGE>
determination prior to the commencement of such suit that indemnification of the
indemnitee is proper in the  circumstances  because the  indemnitee  has met the
applicable   standard  of  conduct  set  forth  in  the  DGCL,   nor  an  actual
determination by the Corporation (including its Board of Directors,  independent
legal  counsel  or its  stockholders)  that  the  indemnitee  has not  met  such
applicable  standard of conduct,  shall create a presumption that the indemnitee
has not met the  applicable  standard  or conduct or, in the case of such a suit
brought by the indemnitee, be a defense to such suit. In any suit brought by the
indemnitee to enforce a right  hereunder,  or by the  Corporation  to recover an
advancement of expenses  pursuant to the terms of an undertaking,  the burden of
proving  that  the  indemnitee  is not  entitled  to be  indemnified  or to such
advancement  of  expenses  under  this  Section  or  otherwise  shall  be on the
Corporation.

SECTION 5.3 Specific Limitations on Indemnification.
            ----------------------------------------

         Notwithstanding   anything  in  this  Article  to  the  contrary,   the
Corporation  shall not be obligated to make any payment to any  indemnitee  with
respect to any proceeding (i) to the extent that payment is actually made to the
indemnitee  under  any  insurance  policy,  or is  made  to  indemnitee  by  the
Corporation  or an affiliate  thereof  otherwise  than pursuant to this Article,
(ii) for any expense,  liability or loss in connection with a proceeding settled
without the Corporation's written consent, which consent,  however, shall not be
unreasonably withheld, (iii) for an accounting of profits made from the purchase
or sale by the indemnitee of securities of the Corporation within the meaning of
Section 16(b) of the  Securities  Exchange Act of 1934,  as amended,  or similar
provisions  of any state  statutory or common law, or (iv) where  prohibited  by
applicable law.

SECTION 5.4  Contract.
             ---------

         The provisions of this Article shall be deemed to be a contract between
the Corporation and each director and officer who serves in such capacity at any
time while such  Section is in effect,  and any repeal or  modification  thereof
shall not affect any rights or  obligations  then  existing  with respect to any
state of facts then or  theretofore  existing or any action,  suit or proceeding
theretofore  or  thereafter  based in whole  or in part  upon any such  state of
facts.

SECTION 5.5 Partial Indemnity.
            ------------------

         If the  indemnitee  is entitled  under any provision of this Article to
indemnification  by the  Corporation  for  some or a  portion  of the  expenses,
liabilities or losses incurred in connection with a proceeding but not, however,
for  all of  the  total  amount  thereof,  the  Corporation  shall  nevertheless
indemnify  the  indemnitee  for the portion  thereof to which the  indemnitee is
entitled. Moreover,  notwithstanding any other provision of this Article, to the
extent that the  indemnitee  has been  successful  on the merits or otherwise in
defense of any or all claims  relating in whole or in part to a proceeding or in
defense of
                                      -14-
<PAGE>
any  issue  or  matter  therein,  including  dismissal  without  prejudice,  the
indemnitee shall be indemnified against all loss, expense and liability incurred
in  connection  with  the  portion  of the  proceeding  with  respect  to  which
indemnitee was successful on the merits or otherwise.

SECTION 5.6 Non-Exclusivity of Rights.
            --------------------------

         The  rights  to  indemnification  and to the  advancement  of  expenses
conferred  in this  Article  shall not be exclusive of any other right which any
person may have or hereafter  acquire  under any  statute,  the  Certificate  of
Incorporation, bylaw, agreement, vote of stockholders or disinterested directors
or otherwise.

SECTION 5.7  Insurance.
             ----------

         The  Corporation  may maintain  insurance,  at its expense,  to protect
itself  and any  director,  officer,  employee  or agent of the  Corporation  or
another  corporation,  partnership,  joint  venture,  trust or other  enterprise
against any expense,  liability or loss,  whether or not the  Corporation  would
have the power to indemnify such person against such expense,  liability or loss
under the DGCL.

SECTION 5.8 Indemnification of Employees and Agents of the Corporation.
            -----------------------------------------------------------

         The Corporation may, to the extent  authorized from time to time by the
Board of Directors,  grant rights to  indemnification  and to the advancement of
expenses,  to any employee or agent of the  Corporation to the fullest extent of
the  provisions  of  this  Article  with  respect  to  the  indemnification  and
advancement of expenses of directors and officers of the Corporation, or to such
lesser extent as may be determined by the Board of Directors.

SECTION 5.9 Notice by Indemnitee and Defense of Claim.
            ------------------------------------------

         The indemnitee  shall promptly  notify the  Corporation in writing upon
being  served  with any  summons,  citation,  subpoena,  complaint,  indictment,
information or other document relating to any matter,  whether civil,  criminal,
administrative or  investigative,  but the omission so to notify the Corporation
will not relieve it from any  liability  which it may have to the  indemnitee if
such omission does not prejudice the Corporation's rights. If such omission does
prejudice  the  Corporation's  rights,  the  Corporation  will be relieved  from
liability only to the extent of such prejudice;  nor will such omission  relieve
the Corporation from any liability which is may have to the indemnitee otherwise
than under  this  Article V. With  respect  to any  proceedings  as to which the
indemnitee notifies the Corporation of the commencement thereof:

         (a) The Corporation will be entitled to participate  therein at its own
expense; and
                                      -15-
<PAGE>
         (b) The  Corporation  will be entitled  to assume the defense  thereof,
with counsel reasonably satisfactory to the indemnitee;  provided, however, that
the  Corporation  shall not be entitled to assume the defense of any  proceeding
(and  this  Section  5.9  shall  be  inapplicable  to  such  proceeding)  if the
indemnitee  shall have  reasonably  concluded  that  there may be a conflict  of
interest  between  the  Corporation  and the  indemnitee  with  respect  to such
proceeding.  After notice from the Corporation to the indemnitee of its election
to  assume  the  defense  thereof,  the  Corporation  will not be  liable to the
indemnitee  under this Article V for any expenses  subsequently  incurred by the
indemnitee in connection with the defense  thereof,  other than reasonable costs
of investigation  or as otherwise  provided below. The indemnitee shall have the
right to employ its own counsel in such  proceeding but the fees and expenses of
such counsel incurred after notice from the Corporation of its assumption of the
defense thereof shall be at the expense of the indemnitee unless:

                  (i) The  employment  of  counsel  by the  indemnitee  has been
authorized by the Corporation in writing; or

                  (ii) The Corporation shall not have employed counsel to assume
the defense in such  proceeding  or shall not have  assumed  such defense and be
acting in connection therewith with reasonable diligence;

                  in each of which cases the fees and  expenses of such  counsel
shall be at the expense of the Corporation.

         (c) The Corporation shall not settle any proceeding in any manner which
would  impose  any  penalty  or  limitation  on  the   indemnitee   without  the
indemnitee's written consent;  provided,  however,  that the indemnitee will not
unreasonably withhold his consent to any proposed settlement.


                                   ARTICLE VI

                   CERTIFICATES FOR SHARES AND THEIR TRANSFER

SECTION 6.1  Certificates for Shares.
             ------------------------

         Unless  otherwise  provided by a resolution  of the Board of Directors,
the  shares  of the  Corporation  shall be  represented  by a  certificate.  The
certificates of stock of the Corporation  shall be numbered and shall be entered
in the books of the  Corporation  as they are  issued.  They shall  exhibit  the
holder's  name and number of shares and shall be signed by or in the name of the
Corporation by (a) the Chairman of the Board of Directors,  the President or any
Vice President and (b) the Treasurer,  any Assistant Treasurer, the Secretary or
any Assistant  Secretary.  Any or all of the signatures on a certificate  may be
facsimile. In case any officer of the Corporation, transfer agent or
                                      -16-
<PAGE>
registrar who has signed, or whose facsimile signature has been placed upon such
certificate,  shall have ceased to be such officer,  transfer agent or registrar
before such  certificate is issued,  such certificate may nevertheless be issued
by the  Corporation  with the same effect as if he were such  officer,  transfer
agent or registrar at the date of issuance.

SECTION 6.2  Classes of Stock.
             -----------------

         (a) If the Corporation shall be authorized to issue more than one class
of stock  or more  than one  series  of any  class,  the  powers,  designations,
preferences and relative participating, optional or other special rights of each
class  of  stock  or  series  thereof  and the  qualification,  limitations,  or
restrictions  of such  preferences  or  rights  shall  be set  forth  in full or
summarized on the face or back of the  certificate  that the  Corporation  shall
issue to  represent  such class or series of stock;  provided,  that,  except as
otherwise provided in Section 202 of the General Corporation Law of the State of
Delaware, in lieu of the foregoing  requirements,  there may be set forth on the
face or back of the certificate  that the  Corporation  shall issue to represent
such class or series of stock,  a statement  that the  Corporation  will furnish
without  charge to each  stockholder  who so requests the powers,  designations,
preferences and relative participating, optional or other special rights of each
class  of  stock  or  series  thereof  and the  qualifications,  limitations  or
restrictions of such preferences or rights.

         (b)  Within a  reasonable  time  after  the  issuance  or  transfer  of
uncertificated stock, the Corporation shall send to the registered owner thereof
a written notice  containing the information  required to be set forth or stated
on certificates pursuant to applicable law (including Sections 151, 156, 202(a),
or  218(a)  of the  General  Corporation  Law of the  State  of  Delaware)  or a
statement that the Corporation  will furnish without charge to each  stockholder
who  so   requests   the  powers,   designations,   preferences   and   relative
participating, optional or other special rights of each class of stock or series
thereof and the qualifications,  limitations or restrictions of such preferences
or rights.

SECTION 6.3  Transfer.
             ---------

         Upon  surrender  to  the  Corporation  or  the  transfer  agent  of the
Corporation  of a certificate  for shares duly endorsed or accompanied by proper
evidence of succession,  assignation  or authority to transfer,  it shall be the
duty of the  Corporation  to  issue a new  certificate  to the  person  entitled
thereto,  cancel the old certificate and record the transaction  upon its books.
Upon  receipt  of proper  transfer  instructions  from the  registered  owner of
uncertificated  shares, such uncertificated shares shall be cancelled,  issuance
of new equivalent  uncertificated shares or certificated shares shall be made to
the person entitled thereto and the transaction shall be recorded upon the books
of the Corporation.
                                      -17-
<PAGE>
SECTION 6.4  Record Owner.
             -------------

         The Corporation  shall be entitled to treat the holder of record of any
share or shares of stock as the holder in fact thereof, and, accordingly,  shall
not be bound to  recognize  any  equitable or other claim to or interest in such
share on the part of any other  person,  whether or not it shall have express or
other notice  thereof,  save as  expressly  provided by the laws of the State of
Delaware.

SECTION 6.5  Lost Certificates.
             ------------------

         The Board of Directors may direct a new  certificate or certificates or
uncertificated  shares to be issued in place of any  certificate or certificates
theretofore  issued by the  Corporation  alleged  to have been  lost,  stolen or
destroyed,  upon the making of an affidavit of that fact by the person  claiming
the certificate of stock to be lost, stolen or destroyed.  When authorizing such
issue of a new certificate or certificates or uncertificated  shares,  the Board
of Directors may, in its discretion and as a condition precedent to the issuance
thereof,  require the owner of such lost,  stolen or  destroyed  certificate  or
certificates, or his legal representative,  to advertise the same in such manner
as the Board of Directors  shall  require and to give the  Corporation a bond in
such sum as it may  direct  as  indemnity  against  any  claim  that may be made
against the  Corporation  with respect to the  certificate  alleged to have been
lost, stolen or destroyed.

                                   ARTICLE VII

                                  MISCELLANEOUS

SECTION 7.1  Record Date.
             ------------

         (a) In order  that  the  Corporation  may  determine  the  stockholders
entitled  to  notice of or to vote at any  meeting  of the  stockholders  or any
adjournment  thereof,  or entitled to receive  payment of any  dividend or other
distribution  or  allotment  of any rights or entitled to exercise any rights in
respect of any change, conversion or exchange of stock or for the purpose of any
other lawful action,  the Board of Directors may fix, in advance, a record date,
which  shall not be more than  sixty nor less than ten days prior to the date of
such meeting nor more than sixty days prior to any other action. If not fixed by
the Board of Directors, the record date shall be determined as provided by law.

         (b) A determination  of stockholders of record entitled to notice of or
to vote at a meeting of the stockholders  shall apply to any adjournments of the
meeting, unless the Board of Directors fixes a new record date for the adjourned
meeting.

         (c) Holders of stock on the record  date are  entitled to notice and to
vote or to receive  the  dividend,  distribution  or  allotment  of rights or to
exercise the rights, as the
                                      -18-
<PAGE>
case may be,  notwithstanding  any  transfer  of the  shares on the books of the
Corporation after the record date, except as otherwise  provided by agreement or
by law, the Certificate of Incorporation or these Bylaws.

SECTION 7.2  Execution of Instruments.
             -------------------------

         The Board of Directors may, in its discretion, determine the method and
designate the signatory  officer or officers,  or other persons,  to execute any
corporate  instrument  or  document  or  to  sign  the  corporate  name  without
limitation,   except  where  otherwise  provided  by  law,  the  Certificate  of
Incorporation  or these Bylaws.  Such  designation may be general or confined to
specific instances.

SECTION 7.3 Voting of Securities Owned by the Corporation.
            ----------------------------------------------

         All  stock  and  other  securities  of other  corporations  held by the
Corporation  shall be voted,  and all  proxies  with  respect  thereto  shall be
executed,  by the person so  authorized by resolution of the Board of Directors,
or, in the absence of such authorization, by the President.

SECTION 7.4  Corporate Seal.
             ---------------

         A  corporate  seal  shall  not  be  requisite  to the  validity  of any
instrument  executed by or on behalf of the Corporation.  If a corporate seal is
used, the same shall be at the pleasure of the officer  affixing seal either (a)
a circle having on the circumference  thereof the words "M.D. Labs, Inc." and in
the center  "Incorporated - 1996,  Delaware," or (b) a seal containing the words
"Corporate Seal" in the center thereof.

SECTION 7.5  Construction and Definitions.
             -----------------------------

         Unless the context requires otherwise, the general provisions, rules of
construction  and  definitions  in the General  Corporation  Law of the State of
Delaware and the Certificate of  Incorporation  shall govern the construction of
these Bylaws.

SECTION 7.6  Amendments.
             -----------

         These  Bylaws may be  altered,  amended or repealed as set forth in the
Certificate of Incorporation.
                                      -19-

                              EMPLOYMENT AGREEMENT


         This Employment  Agreement (the "Agreement") is made as of June 1, 1996
by and between M.D. LABS,  INC., a Delaware  corporation  (the  "Company"),  and
HOOMAN NIKZAD (the "Employee").

                                    RECITALS

         A. The Company wishes to employ the Employee,  and the Employee  wishes
to be employed by the Company.

         B. The  parties  wish to set  forth in this  Agreement  the  terms  and
conditions of such employment.

                                   AGREEMENTS

         In  consideration of the mutual promises and covenants set forth herein
and for other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties agree as follows:

         1.  Employment.  Subject to the terms and conditions of this Agreement,
the Company  employs  the  Employee to serve in an  executive  capacity  and the
Employee accepts such employment and agrees to dedicate all of his business time
and effort to Company business and perform such reasonable  responsibilities and
duties as may be  assigned  to him from time to time by the  Company's  Chairman
and/or  Board  of  Directors  (the  "Board").  Employee's  title  shall be Chief
Executive Officer of the Company, with general authority over and responsibility
for Company  operations,  subject to the  direction of the  Chairman  and/or the
Board. Employee shall report directly to the Board and its Chairman.  Subject to
Section 8, such title and duties may be changed  from time to time by the Board;
so long as Employee is maintained in an executive  capacity  throughout the term
of his employment.

         2. Term.  This  employment of Employee by the Company shall commence on
the date  hereof,  and  continue  until May 31,  1999.  The term may be extended
thereafter by written agreement of the parties.

         3. Compensation.

                  a. Salary.  During the year ending May 31,  1997,  the Company
shall pay  Employee  a base  annual  salary,  before  deducting  all  applicable
withholdings  and car lease  payments made by the Company on behalf of Employee,
at the rate of  $85,000  per year,  payable  in  accordance  with the  Company's
standard  payroll  policies.  This salary level shall increase ten percent (10%)
annually in each of the years ending May 31, 1998 and 1999.
<PAGE>
                  b. Incentive  Plan. The Company may establish and implement an
incentive  compensation system which will provide additional  incentive payments
to Employee based upon his performance and the performance of the Company.

         4.  Fringe  Benefits.  In  addition  to the  options  for shares of the
Company's  Common  Stock  available  to  Employee  under the same terms as those
available to Company  employees,  and any other employee benefit plans generally
available to Company  employees,  the Company  shall include the Employee in any
group medical  insurance plan  maintained for the employees of the Company.  The
manner  of  implementation  of such  benefits  with  respect  to such  items  as
procedures  and  amounts  is  discretionary   with  the  Company  but  shall  be
commensurate with Employee's executive status and shall include medical coverage
for Employee and Employee's family members who are eligible under the applicable
plans.

         5. Vacation. Employee shall be entitled to vacation with pay in keeping
with Employee's previously established vacation practices. In addition, Employee
shall be entitled to such  holidays as the Company may approve for its executive
personnel.

         6. Expense Reimbursement.  In addition to the compensation and benefits
provided  above,  the  Company  shall pay all  reasonable  expenses  of Employee
incurred  in  connection   with  the   performance  of  Employee's   duties  and
responsibilities  to the Company pursuant to this Agreement,  upon submission of
appropriate  vouchers  and  supporting  documentation  in  accordance  with  the
Company's  usual  and  ordinary  practices,  provided  that  such  expenses  are
reasonable and necessary business expenses of the Company. The Company shall pay
Employee's  reasonable  cellular  telephone expenses that are related to Company
business.

         7. Termination.  The Company may terminate Employee's  employment prior
to the expiration of this Agreement, in the manner provided below:

                  a. For Cause. The Company may terminate Employee's  employment
by the  Company  prior to the  expiration  of this  Agreement,  for cause,  upon
written  notice to the  Employee  stating  the facts  constituting  such  cause,
provided  that  Employee  shall have 20 days  following  such notice to cure any
conduct or act, if curable, alleged to provide grounds for termination for cause
hereunder. In the event of termination for cause, the Company shall be obligated
to pay  the  Employee  only  the  base  salary  due  him  through  the  date  of
termination.  Cause shall include  willful  failure to abide by  instructions or
policies  from  or  set  by the  Company,  commission  of a  felony  or  serious
misdemeanor  offense or pleading guilty or nolo  contendere to same,  Employee's
material breach of this  Agreement,  or breach by Employee of any other material
obligation to the Company.

                  b. Without  Cause.  The Chairman or the Company may  terminate
Employee's employment by the Company at any time immediately,  without cause, by
giving  written  notice to the Employee.  If the Company  terminates  under this
Section 7.b, it shall pay to Employee
                                      - 2 -
<PAGE>
a lump-sum amount equal to the greater of (i) the greater of the base salary due
for the  remaining  term as set forth in Section 2 hereof or (ii) 12 months base
salary, in either case less applicable  withholdings and shall continue coverage
of Employee and Employee's  dependents  under its medical plans for 12 months or
until Employee secures other employment  (unless  continuation of coverage under
such plans is unfeasible,  in which event the Company will provide substantially
similar benefits).

                  c. Disability. If during the term of this Agreement,  Employee
experiences  a  permanent  disability  (as  defined in Section  22(e)(3)  of the
Internal Revenue Code of 1986, as amended),  the Company shall have the right to
terminate this Agreement  without further  obligation  hereunder  except for any
bonus  amount  payable in  accordance  with the next  sentence  and any  amounts
payable  pursuant  to  disability   plans  generally   applicable  to  executive
employees.  Within 90 days after the end of the fiscal year in which termination
pursuant to this Section 7.c occurs,  so long as Employee is in full  compliance
with  this  Agreement,  Employee  shall be  entitled  to  receive  an  incentive
compensation  payment  (calculated  and  payable  in the manner  referred  to in
Section 2.b,  if any, based upon the Company's  financial  performance  for such
fiscal  year,  which shall be prorated to the extent that  Employees  employment
during such fiscal year was for a period of less than the full year.

                  d.  Death.  If the  Employee  dies  during  the  term  of this
Agreement, this Agreement shall terminate immediately,  and the Employee's legal
representative  shall be  entitled  to receive  the base  salary due to Employee
through  the 60th day from the date on which his death shall have  occurred  and
any other  death  benefits  generally  applicable  to  executive  employees.  In
addition,  Employee's  death occurs,  Employee's legal  representative  shall be
entitled to receive,  at the end of the first quarter of the year  following the
fiscal year in which such death shall have occurred,  an incentive  compensation
payment  (calculated  and payable in the manner referred to  in Section 2.b), if
any, based upon the Company's financial  performance for such fiscal year, which
shall be prorated to the extent that  Employee's  employment  during such fiscal
year was for a period of less than the full year.

         8. Change in Control.

                  a. Severance Benefits.  Notwithstanding  Section 7.b., if your
employment  with the  Company  terminates  within  12  months  after a Change in
Control  (as  defined  in  Section  8.b  below),  you shall be  entitled  to the
severance  benefits  provided in Section 8.d unless (i) such  termination  is in
accordance  with Section 7.a, 7.c or 7.d above;  or (ii) such  termination is by
you for other than Good Reason (as defined in Section 8.c below).

                  b. "Change in Control" shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the
                                      - 3 -
<PAGE>
stockholders  of the  Company in  substantially  the same  proportions  as their
ownership  of stock of the  Company,  is or becomes the  "beneficial  owner" (as
defined in Rule 13d-3 under said Act), directly or indirectly,  of securities of
the Company representing one-third or more of the total voting power represented
by the Company's then outstanding Common Stock, or (ii) during any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation,  other than a merger or  consolidation  which  would  result in the
Common Stock of the Company outstanding  immediately prior thereto continuing to
represent  (either by remaining  outstanding  or by being  converted into Common
Stock of the  surviving  entity) at least  two-thirds  of the total voting power
represented  by the  Common  Stock  of the  Company  or  such  surviving  entity
outstanding immediately after such merger or consolidation,  or the stockholders
of the  Company  approve a plan of  complete  liquidation  of the  Company or an
agreement for the sale or disposition by the Company of (in one transaction or a
series of transactions) all or substantially all the Company's assets.

                  c. "Good Reason" shall mean,  for purposes of this  Agreement,
(i) without  your  express  written  consent,  the  assignment  to you of duties
inconsistent with your positions,  duties,  responsibilities and status with the
Company immediately prior to the Change in Control, or a demotion or a change in
titles or offices as in effect  immediately prior to a Change in Control (except
in connection  with  termination of your  employment in compliance  with Section
7.1, 7.c or 7.d above);  or (ii) a material  breach by the Company of any of its
obligations  hereunder  which (if curable) is not cured by the Company within 20
days after written notice thereof.

                  d. Amount of Benefit. If the Employee is entitled to severance
benefits  under  Section  8.a,  the  amount of such  benefit  shall  equal (i) a
lump-sum  payment  not to exceed  2.99 times the "Base  Amount" (as such term is
defined in Section 280G of the  Internal  Revenue  Code of 1986)  applicable  to
Employee,  whether or not the provisions of Section 280G actually applies to the
payment;  (ii) a continuation of medical coverage in the manner  contemplated in
Section  7.b above;  and (iii)  such other  benefits  to which the  Employee  is
entitled  under  the  Company's   benefits  plans  and  policies  as  in  effect
immediately prior to the Change in Control with respect to terminated Employees.

         9. Confidentiality. Employee acknowledges that Employee may receive, or
contribute to the production  of,  confidential,  proprietary,  and trade secret
information  of the  Company,  and  others  with whom the  Company  may be doing
business.  For purposes of this Agreement,  Employee  agrees that  "Confidential
Information" shall mean information or material proprietary
                                      - 4 -
<PAGE>
to the Company or designated as Confidential  Information by the Company and not
generally known by non-Company  personnel,  which Employee  develops or to which
Employee  may obtain  knowledge or access  through or as a result of  Employee's
relationship  with  Company  (including   information   conceived,   originated,
discovered,  or  developed  in  whole  or in  part  by  Employee).  Confidential
Information includes,  but is not limited to, the following types of information
and other  information of a similar nature  (whether or not reduced to writing):
discoveries,  inventions,  ideas, concepts,  research,  development,  processes,
procedures,  "know-how", formulae, marketing techniques and materials, marketing
and  development  plans,  business plans,  customer names and other  information
related to customers,  price lists,  pricing  policies,  financial  information,
employee   compensation,   and  computer  programs  and  systems.   Confidential
Information  also  includes any  information  described  above which the Company
obtains  from  another  party and which the  Company  treats as  proprietary  or
designates as Confidential Information,  whether or not owned by or developed by
the Company.  Employee  acknowledges that the Confidential  Information  derives
independent economic value, actual or potential,  from not being generally known
to, and not being  readily  ascertainable  by proper means by, other persons who
can obtain economic value from its disclosure or use.

         Information  publicly  known without  breach of this  Agreement that is
generally  employed by the trade at or after the time  Employee  first learns of
such information,  or generic information or knowledge which Employee would have
learned in the  course of similar  employment  or work  elsewhere  in the trade,
shall not be deemed part of the Confidential Information.

         Employee further agrees:

                  a. To furnish  Company on demand,  at any time during or after
employment,  a complete list of the names and addresses of all present,  former,
and  potential  customers  and other  contacts  gained  while an employee of the
Company,  whether  or not in the  possession  or  within  the  knowledge  of the
Company.

                  b.  That  all  notes,  computer  or  disk  memory,  memoranda,
documentation,   and  records  in  any  way   incorporating  or  reflecting  any
Confidential  Information shall belong exclusively to the Company,  and Employee
agrees to turn over all  copies  of such  materials  in  Employee's  control  to
Company upon  request or upon  termination  of  Employee's  employment  with the
Company,  regardless  of whether  the  materials  were  prepared  by or with the
assistance of Employee.

                  c. That while employed by the Company and thereafter  Employee
will hold in confidence and not directly or indirectly reveal, report,  publish,
disclose,  or  transfer  any of the  Confidential  Information  to any person or
entity, or utilize any of the Confidential  Information for any purpose,  except
in the course of Employee's work for the Company.
                                      - 5 -
<PAGE>
                  d. That any ideas in whole or in part  conceived of or made by
Employee  during the term of his  employment  or  relationship  with the Company
which are made  through the use of any of the  Confidential  Information  of the
Company or any of the Company's equipment,  facilities,  trade secrets, or time,
or which  result from any work  performed  by Employee  for the  Company,  shall
belong exclusively to the Company and shall be deemed a part of the Confidential
Information for purposes of this  Agreement.  Employee hereby assigns and agrees
to assign to the  Company  all  rights in and to such  Confidential  Information
whether for purposes of obtaining  patent or copyright  protection or otherwise.
Employee shall acknowledge and deliver to the Company, without charge to Company
(but at its expense) such written instruments and do such other acts,  including
giving  testimony in support of Employee's  authorship or  inventorship,  as the
case may be,  necessary  in the  opinion  of the  Company  to obtain  patents or
copyrights  or to otherwise  protect or vest in the Company the entire right and
title in and to the Confidential Information.

         10. Non-Competition.

                  a.  Non-Competition  During  Employment Term.  Employee agrees
that during the term of  Employee's  employment  by the Company,  Employee  will
devote all of Employee's  business time and effort to and give undivided loyalty
to the  Company,  and  will  not  engage  in any  way  whatsoever,  directly  or
indirectly,  in any  business  that  is  competitive  with  the  Company  or its
affiliates,  nor solicit, or in any other manner work for or assist any business
which is  competitive  with the  Company or its  affiliates.  During the term of
Employee's employment by the Company, Employee will undertake no planning for or
organization  of any  business  activity  competitive  with the  Company  or its
affiliates, and Employee will not combine or conspire with any other employee of
the  Company  or any  other  person  for the  purpose  of  organizing  any  such
competitive business activity.

                  b.   Non-Competition   After   Employment  Term.  The  parties
acknowledge that Employee will acquire much knowledge and information concerning
the  business  of the  Company and its  affiliates  as the result of  Employee's
employment.  The parties further acknowledge that the scope of business in which
Company is engaged as of the date of execution of this  Agreement is  world-wide
and very  competitive and one in which few companies can  successfully  compete.
Competition  by Employee in that  business  after this  Agreement is  terminated
would severely injure Company. Accordingly,  until one (1) year, or a reasonable
term  determined  by state law,  after this  Agreement is terminated or Employee
leaves the employment of Company for any reason whatsoever, Employee will not:

                  (1)      Within any  jurisdiction  or marketing  area in which
                           Company or any of its affiliates is doing business or
                           is qualified to do business,  directly or  indirectly
                           manage,  operate,  join,  control,  or participate or
                           become  interested  in or  be  connected  with  as an
                           employee,  partner, officer,  director,  stockholder,
                           consultant, or investor, any corporation,
                                      - 6 -
<PAGE>
                           partnership,  or other business entity other than the
                           Company  or its  affiliates,  which  shall  operate a
                           business in competition  with the business  conducted
                           by the  Company  or its  affiliates.  Nothing  herein
                           shall  prohibit  Employee  from  owning,  solely  for
                           investment  purposes,  publicly-traded  securities of
                           any  company  which  operates  a  business  otherwise
                           covered by this Section, provided that such ownership
                           constitutes   less   than  1%  of  the   issued   and
                           outstanding  equity or debt  securities,  as the case
                           may be, of said company.

                  (2)      Persuade  or  attempt  to  persuade   any   potential
                           customer  or  client to which  Company  or any of its
                           affiliates has made a proposal or sale, or with which
                           Company  or any of its  affiliates  has  been  having
                           discussions, not to transact business with Company or
                           such affiliate,  or instead to transact business with
                           another person or organization;

                  (3)      Solicit  the  business  of  any  company  which  is a
                           customer  or  client  of  the  Company  or any of its
                           affiliates at any time during  Employee's  employment
                           by the Company,  or was its customer or client within
                           3  years  prior  to  the  date  of  this   Agreement,
                           provided, however, if Employee becomes employed by or
                           represents a business that exclusively sells products
                           that do not compete with  products  then  marketed or
                           intended to be marketed by the Company,  such contact
                           shall be permissible; or

                  (4)      Solicit,  endeavor to entice away from the Company or
                           any of its  affiliates,  or otherwise  interfere with
                           the  relationship  of  the  Company  or  any  of  its
                           affiliates  with,  any person who is  employed  by or
                           otherwise engaged to perform services for the Company
                           or any  of its  affiliates,  whether  for  Employee's
                           account  or for the  account  of any other  person or
                           organization.

                  c. Modification.  The covenants set forth in Sections 9 and 10
shall be construed  as  independent  of any other  covenant or provision of this
Agreement  or any other  agreement.  The  Company  may  reduce  the scope of the
obligations  under the covenant  unilaterally  and without  consent of any other
person or entity, effective upon giving notice thereof.

                  d. Time and Territory Reduction.  If the period of time and/or
territory  described  above  are  held  to be in  any  respect  an  unreasonable
restriction,  it is agreed that the court so holding may reduce the territory to
which the restriction pertains or the period of time in which it operates or may
reduce both such territory and such period,  to the minimum extent  necessary to
render such provision enforceable.
                                      - 7 -
<PAGE>
                  e. Survival.  The  obligations  described in Sections 9 and 10
shall survive any termination of this Employment Agreement or any termination of
the employment relationship created hereunder.

         11. Return of the Company's  Materials.  Upon the  termination  of this
Agreement,  Employee  shall  promptly  return to the Company  all files,  credit
cards, keys,  instruments,  equipment,  and other materials owned or provided by
the Company.

         12. Insurance. The Company shall use commercially reasonable efforts to
carry director's and officer's  professional  liability  insurance  coverage for
Employee while in the performance of Employee's duties hereunder.

         13. Remedies.  In addition to other remedies provided by law or equity,
upon a breach by Employee of any of the covenants  contained herein, the Company
shall be entitled to have a court of competent  jurisdiction enter an injunction
against  Employees  prohibiting  any further  breach of the covenants  contained
herein.  The parties  further agree that the services to be performed  hereunder
are of a unique,  special,  and  extraordinary  character and that any breach or
threatened  breach  by  Employee  of any  provision  of  Section 9 or 10 of this
Agreement  shall cause the  Company  irreparable  harm which  cannot be remedied
solely by damages.  Therefore,  in the event of any  controversy  concerning the
rights or obligations under this Agreement,  such rights or obligations shall be
enforceable in a court of competent jurisdiction at law or equity by a decree of
specific  performance  or, if the Company elects,  by obtaining  damages or such
other relief as the Company may elect to pursue. Such remedies,  however,  shall
be cumulative  and  nonexclusive  and shall be in addition to any other remedies
which the Company may have.  The parties agree that in the event of  litigation,
venue shall lie exclusively in Maricopa County, Arizona.

         14.  Common Law of Torts or Trade  Secrets.  Nothing in this  Agreement
shall be construed  to limit or negate the common law of torts or trade  secrets
where  such  common  law  provides  Company  with  broader  protection  than the
protection provided by this Agreement.

         15. Nondelegability of Employee's Rights and Company Assignment Rights.
The obligations, rights, and benefits of Employee hereunder are personal and may
not be delegated,  assigned,  or transferred in any manner  whatsoever,  nor are
such  obligations,  rights,  or  benefits  subject  to  involuntary  alienation,
assignment, or transfer. The Company may transfer its obligations hereunder to a
subsidiary, affiliate or successor.

         16. Notices. All notices,  demands, and communications required by this
Agreement  shall be in  writing  and shall be deemed to have been  given for all
purposes  when  sent to the  respective  addresses  set  forth  below,  (i) upon
personal delivery, (ii) one day after being sent, when sent by overnight courier
service to and from locations within the continental United States,  (iii) three
days after posting when sent by registered, certified, or regular United States
                                      - 8 -
<PAGE>
mail, with postage prepaid and return receipt requested,  or (iv) on the date of
transmission when sent by confirmed facsimile.

                  If to the Company:           M.D. Labs, Inc.
                                               1719 W. University Drive
                                               Suite 187
                                               Tempe, Arizona 85281
                                               Attn: Todd P. Belfer
                                                      President

                           Copy to:            Quarles & Brady
                                               One E. Camelback Road
                                               Suite 400
                                               Phoenix, Arizona 85012
                                               Attn: Paul M. Gales, Esq.

                    If to Employee:            Hooman Nikzad
                                               8100 East Camelback Road, #17
                                               Scottsdale, Arizona  85251
                                               Phone: 602-423-0239
                                               Facsimile:    602-423-6926


(Or when sent to such other address as any party shall specify by written notice
so given.)

         17. Entire  Agreement.  This  Agreement  constitutes  the final written
expression of all of the agreements  between the parties,  and is a complete and
exclusive  statement  of those  terms.  It  supersedes  all  understandings  and
negotiations  concerning  the matters  specified  herein.  Any  representations,
promises,  warranties, or statements made by either party that differ in any way
from the terms of this written Agreement shall be given no force or effect.  The
parties specifically represent,  each to the other, that there are no additional
or supplemental agreements between them related in any way to the matters herein
contained unless specifically  included or referred to herein. No addition to or
modification  of any provision of this Agreement shall be binding upon any party
unless made in writing and signed by all parties.

         18. Waiver. The waiver by either party of the breach of any covenant or
provision in this Agreement shall not operate or be construed as a waiver of any
subsequent breach by either party.

         19.  Invalidity of Any Provision.  The provisions of this Agreement are
severable,  it being  the  intention  of the  parties  hereto  that  should  any
provisions   hereof  be   invalid   or   unenforceable,   such   invalidity   or
unenforceability of any provision shall not affect the remaining
                                      - 9 -
<PAGE>
provisions hereof, but the same shall remain in full force and effect as if such
invalid or unenforceable provisions were omitted.

         20.  Applicable  Law. This Agreement shall be governed by and construed
in accordance  with the internal  laws of the State of Arizona  exclusive of the
conflict of law provisions thereof.

         21.  Attorneys' Fees. If any party reasonably  employs legal counsel to
bring an action at law or other  proceedings  against the other party to enforce
any of the  terms  hereof,  the  party  prevailing  in any such  action or other
proceeding  shall be paid by the other party its reasonable  attorneys'  fees as
well as court costs, all as determined by the court and not a jury.

         22.  Headings;  Construction.   Headings  in  this  Agreement  are  for
informational purposes only and shall not be used to construe the intent of this
Agreement.  The language in all parts of this Employment  Agreement shall in all
cases be construed as a whole according to its fair meaning and not strictly for
nor against any party.

         23. Counterparts;  Facsimile Signatures. This Agreement may be executed
simultaneously  in any number of counterparts,  each of which shall be deemed an
original but all of which together shall  constitute one and the same agreement.
Delivery  by any party of a  facsimile  signature  to the other  parties to this
Agreement  shall  constitute  effective  delivery  by said party of an  original
counterpart signature to this Agreement.

         24. Binding Effect;  Benefits. This Agreement shall be binding upon and
shall  inure to the benefit of the parties  hereto and their  respective  heirs,
successors,  executors,  administrators,  and assigns.  Notwithstanding anything
contained  in  this  Agreement  to the  contrary,  nothing  in  this  Agreement,
expressed or implied, is intended to confer on any person other than the parties
hereto or their respective heirs,  successors,  executors,  administrators,  and
assigns any rights, remedies,  obligations, or liabilities under or by reason of
this Agreement.

         25.  Binding  Effect on  Marital  Community.  Employee  represents  and
warrants to the Company that he has the power to bind his marital  community (if
any) to all terms and provisions of this agreement by his execution hereof.
                                     - 10 -
<PAGE>
         IN  WITNESS  WHEREOF,  each of the  parties  hereto has  executed  this
Employment  Agreement and caused the same to be duly  delivered on its behalf as
of June 1, 1996.

                                   M.D. LABS, INC.,
                                   a Delaware corporation



                                   By_______________________________________
                                       Todd P. Belfer, President

                                                                    "COMPANY"



                                   _________________________________________
                                   HOOMAN NIKZAD

                                                                   "EMPLOYEE"
                                     - 11 -

                              EMPLOYMENT AGREEMENT


         This Employment  Agreement (the "Agreement") is made as of June 1, 1996
by and between M.D. LABS, INC., a Delaware corporation (the "Company"), and TODD
P. BELFER (the "Employee").

                                    RECITALS

         A. The Company wishes to employ the Employee,  and the Employee  wishes
to be employed by the Company.

         B. The  parties  wish to set  forth in this  Agreement  the  terms  and
conditions of such employment.

                                   AGREEMENTS

         In  consideration of the mutual promises and covenants set forth herein
and for other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties agree as follows:

         1.  Employment.  Subject to the terms and conditions of this Agreement,
the Company  employs  the  Employee to serve in an  executive  capacity  and the
Employee accepts such employment and agrees to dedicate all of his business time
and effort to Company business and perform such reasonable  responsibilities and
duties  as may be  assigned  to him  from  time to time by the  Company's  Chief
Executive  Officer  and/or Board of Directors (the  "Board").  Employee's  title
shall be President of the Company,  with such executive  responsibilities as may
be assigned from time to time by, and subject to the direction of, the Chairman,
the Board and/or the Chief Executive Officer.  Employee shall report directly to
the Chief Executive Officer and/or the Board.  Subject to Section 8 herein, such
title and  duties  may be  changed  from time to time by the  Board;  so long as
Employee is  maintained  in an  executive  capacity  throughout  the term of his
employment.

         2. Term.  This  employment of Employee by the Company shall commence on
the date  hereof,  and  continue  until May 31,  1999.  The term may be extended
thereafter by written agreement of the parties.

         3. Compensation.

                  a. Salary.  During the year ending May 31,  1997,  the Company
shall pay  Employee  a base  annual  salary,  before  deducting  all  applicable
withholdings,  at the rate of $50,000 per year,  payable in accordance  with the
Company's  standard  payroll  policies.  This salary  level shall  increase  ten
percent (10%) annually in each of the years ending May 31, 1998 and 1999.
<PAGE>
                  b. Incentive  Plan. The Company may establish and implement an
incentive  compensation system which will provide additional  incentive payments
to Employee based upon his performance and the performance of the Company.

         4.  Fringe  Benefits.  In  addition  to the  options  for shares of the
Company's  Common  Stock  available  to  Employee  under the same terms as those
available to Company  employees,  and any other employee benefit plans generally
available to Company  employees,  the Company  shall include the Employee in any
group medical  insurance plan  maintained for the employees of the Company.  The
manner  of  implementation  of such  benefits  with  respect  to such  items  as
procedures  and  amounts  is  discretionary   with  the  Company  but  shall  be
commensurate with Employee's executive status and shall include medical coverage
for Employee and Employee's family members who are eligible under the applicable
plans.

         5. Vacation. Employee shall be entitled to vacation with pay in keeping
with Employee's previously established vacation practices. In addition, Employee
shall be entitled to such  holidays as the Company may approve for its executive
personnel.

         6. Expense Reimbursement.  In addition to the compensation and benefits
provided  above,  the  Company  shall pay all  reasonable  expenses  of Employee
incurred  in  connection   with  the   performance  of  Employee's   duties  and
responsibilities  to the Company pursuant to this Agreement,  upon submission of
appropriate  vouchers  and  supporting  documentation  in  accordance  with  the
Company's  usual  and  ordinary  practices,  provided  that  such  expenses  are
reasonable and necessary business expenses of the Company. The Company shall pay
Employee's  reasonable  cellular  telephone expenses that are related to Company
business.

         7. Termination.  The Company may terminate Employee's  employment prior
to the expiration of this Agreement, in the manner provided below:

                  a. For Cause. The Company may terminate Employee's  employment
by the  Company  prior to the  expiration  of this  Agreement,  for cause,  upon
written  notice to the  Employee  stating  the facts  constituting  such  cause,
provided  that  Employee  shall have 20 days  following  such notice to cure any
conduct or act, if curable, alleged to provide grounds for termination for cause
hereunder. In the event of termination for cause, the Company shall be obligated
to pay  the  Employee  only  the  base  salary  due  him  through  the  date  of
termination.  Cause shall include  willful  failure to abide by  instructions or
policies  from  or  set  by the  Company,  commission  of a  felony  or  serious
misdemeanor  offense or pleading guilty or nolo  contendere to same,  Employee's
material breach of this  Agreement,  or breach by Employee of any other material
obligation to the Company.

                  b. Without  Cause.  The Chairman or the Company may  terminate
Employee's employment by the Company at any time immediately,  without cause, by
giving written notice
                                      - 2 -
<PAGE>
to the Employee.  If the Company terminates under this Section 7.b, it shall pay
to  Employee a lump-sum  amount  equal to the greater of (i) the base salary due
for the remaining  term as set forth in Section 2 or (ii) 12 months base salary,
in either  case less  applicable  withholdings  and shall  continue  coverage of
Employee  and  Employee's  dependents  under its medical  plans for 12 months or
until Employee secures other employment  (unless  continuation of coverage under
such plans is unfeasible,  in which event the Company will provide substantially
similar benefits).

                  c. Disability. If during the term of this Agreement,  Employee
experiences  a  permanent  disability  (as  defined in Section  22(e)(3)  of the
Internal Revenue Code of 1986, as amended),  the Company shall have the right to
terminate this Agreement  without further  obligation  hereunder  except for any
bonus  amount  payable in  accordance  with the next  sentence  and any  amounts
payable  pursuant  to  disability   plans  generally   applicable  to  executive
employees.  Within 90 days after the end of the fiscal year in which termination
pursuant to this Section 7.c occurs,  so long as Employee is in full  compliance
with  this  Agreement,  Employee  shall be  entitled  to  receive  an  incentive
compensation  payment  (calculated  and  payable  in the manner  referred  to in
Section 2.b., if any, based upon the Company's  financial  performance  for such
fiscal  year,  which shall be prorated to the extent that  Employees  employment
during such fiscal year was for a period of less than the full year.

                  d.  Death.  If the  Employee  dies  during  the  term  of this
Agreement, this Agreement shall terminate immediately,  and the Employee's legal
representative  shall be  entitled  to receive  the base  salary due to Employee
through  the 60th day from the date on which his death shall have  occurred  and
any other  death  benefits  generally  applicable  to  executive  employees.  In
addition,  Employee's  death occurs,  Employee's legal  representative  shall be
entitled to receive,  at the end of the first quarter of the year  following the
fiscal year in which such death shall have occurred,  an incentive  compensation
payment  (calculated  and payable in the manner referred to in Section 2.b),  if
any, based upon the Company's financial  performance for such fiscal year, which
shall be prorated to the extent that  Employee's  employment  during such fiscal
year was for a period of less than the full year.

         8. Change in Control.

                  a. Severance Benefits.  Notwithstanding  Section 7.b,  if your
employment  with the  Company  terminates  within  12  months  after a Change in
Control  (as  defined  in  Section  8.b  below),  you shall be  entitled  to the
severance  benefits  provided in Section 8.d unless (i) such  termination  is in
accordance  with Section 7.a, 7.c or 7.d above;  or (ii) such  termination is by
you for other than Good Reason (as defined in Section 8.c below).

                  b. "Change in Control" shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the
                                      - 3 -
<PAGE>
stockholders  of the  Company in  substantially  the same  proportions  as their
ownership  of stock of the  Company,  is or becomes the  "beneficial  owner" (as
defined in Rule 13d-3 under said Act), directly or indirectly,  of securities of
the Company representing one-third or more of the total voting power represented
by the Company's then outstanding Common Stock, or (ii) during any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation,  other than a merger or  consolidation  which  would  result in the
Common Stock of the Company outstanding  immediately prior thereto continuing to
represent  (either by remaining  outstanding  or by being  converted into Common
Stock of the  surviving  entity) at least  two-thirds  of the total voting power
represented  by the  Common  Stock  of the  Company  or  such  surviving  entity
outstanding immediately after such merger or consolidation,  or the stockholders
of the  Company  approve a plan of  complete  liquidation  of the  Company or an
agreement for the sale or disposition by the Company of (in one transaction or a
series of transactions) all or substantially all the Company's assets.

                  c. "Good Reason" shall mean,  for purposes of this  Agreement,
(i) without  your  express  written  consent,  the  assignment  to you of duties
inconsistent with your positions,  duties,  responsibilities and status with the
Company immediately prior to the Change in Control, or a demotion or a change in
titles or offices as in effect  immediately prior to a Change in Control (except
in connection  with  termination of your  employment in compliance  with Section
7.1, 7.c or 7.d above);  or (ii) a material  breach by the Company of any of its
obligations  hereunder  which (if curable) is not cured by the Company within 20
days after written notice thereof.

                  d. Amount of Benefit. If the Employee is entitled to severance
benefits  under  Section  8.a,  the  amount of such  benefit  shall  equal (i) a
lump-sum  payment  not to exceed  2.99 times the "Base  Amount" (as such term is
defined in Section 280G of the  Internal  Revenue  Code of 1986)  applicable  to
Employee,  whether or not the provisions of Section 280G actually applies to the
payment;  (ii) a continuation of medical coverage in the manner  contemplated in
Section  7.b above;  and (iii)  such other  benefits  to which the  Employee  is
entitled  under  the  Company's   benefits  plans  and  policies  as  in  effect
immediately prior to the Change in Control with respect to terminated Employees.

         9. Confidentiality. Employee acknowledges that Employee may receive, or
contribute to the production  of,  confidential,  proprietary,  and trade secret
information  of the  Company,  and  others  with whom the  Company  may be doing
business.  For purposes of this Agreement,  Employee  agrees that  "Confidential
Information" shall mean information or material proprietary
                                      - 4 -
<PAGE>
to the Company or designated as Confidential  Information by the Company and not
generally known by non-Company  personnel,  which Employee  develops or to which
Employee  may obtain  knowledge or access  through or as a result of  Employee's
relationship  with  Company  (including   information   conceived,   originated,
discovered,  or  developed  in  whole  or in  part  by  Employee).  Confidential
Information includes,  but is not limited to, the following types of information
and other  information of a similar nature  (whether or not reduced to writing):
discoveries,  inventions,  ideas, concepts,  research,  development,  processes,
procedures,  "know-how", formulae, marketing techniques and materials, marketing
and  development  plans,  business plans,  customer names and other  information
related to customers,  price lists,  pricing  policies,  financial  information,
employee   compensation,   and  computer  programs  and  systems.   Confidential
Information  also  includes any  information  described  above which the Company
obtains  from  another  party and which the  Company  treats as  proprietary  or
designates as Confidential Information,  whether or not owned by or developed by
the Company.  Employee  acknowledges that the Confidential  Information  derives
independent economic value, actual or potential,  from not being generally known
to, and not being  readily  ascertainable  by proper means by, other persons who
can obtain economic value from its disclosure or use.

         Information  publicly  known without  breach of this  Agreement that is
generally  employed by the trade at or after the time  Employee  first learns of
such information,  or generic information or knowledge which Employee would have
learned in the  course of similar  employment  or work  elsewhere  in the trade,
shall not be deemed part of the Confidential Information.

         Employee further agrees:

                  a. To furnish  Company on demand,  at any time during or after
employment,  a complete list of the names and addresses of all present,  former,
and  potential  customers  and other  contacts  gained  while an employee of the
Company,  whether  or not in the  possession  or  within  the  knowledge  of the
Company.

                  b.  That  all  notes,  computer  or  disk  memory,  memoranda,
documentation,   and  records  in  any  way   incorporating  or  reflecting  any
Confidential  Information shall belong exclusively to the Company,  and Employee
agrees to turn over all  copies  of such  materials  in  Employee's  control  to
Company upon  request or upon  termination  of  Employee's  employment  with the
Company,  regardless  of whether  the  materials  were  prepared  by or with the
assistance of Employee.

                  c. That while employed by the Company and thereafter  Employee
will hold in confidence and not directly or indirectly reveal, report,  publish,
disclose,  or  transfer  any of the  Confidential  Information  to any person or
entity, or utilize any of the Confidential  Information for any purpose,  except
in the course of Employee's work for the Company.
                                      - 5 -
<PAGE>
                  d. That any ideas in whole or in part  conceived of or made by
Employee  during the term of his  employment  or  relationship  with the Company
which are made  through the use of any of the  Confidential  Information  of the
Company or any of the Company's equipment,  facilities,  trade secrets, or time,
or which  result from any work  performed  by Employee  for the  Company,  shall
belong exclusively to the Company and shall be deemed a part of the Confidential
Information for purposes of this  Agreement.  Employee hereby assigns and agrees
to assign to the  Company  all  rights in and to such  Confidential  Information
whether for purposes of obtaining  patent or copyright  protection or otherwise.
Employee shall acknowledge and deliver to the Company, without charge to Company
(but at its expense) such written instruments and do such other acts,  including
giving  testimony in support of Employee's  authorship or  inventorship,  as the
case may be,  necessary  in the  opinion  of the  Company  to obtain  patents or
copyrights  or to otherwise  protect or vest in the Company the entire right and
title in and to the Confidential Information.

         10. Non-Competition.

                  a.  Non-Competition  During  Employment Term.  Employee agrees
that during the term of  Employee's  employment  by the Company,  Employee  will
devote all of Employee's  business time and effort to and give undivided loyalty
to the  Company,  and  will  not  engage  in any  way  whatsoever,  directly  or
indirectly,  in any  business  that  is  competitive  with  the  Company  or its
affiliates,  nor solicit, or in any other manner work for or assist any business
which is  competitive  with the  Company or its  affiliates.  During the term of
Employee's employment by the Company, Employee will undertake no planning for or
organization  of any  business  activity  competitive  with the  Company  or its
affiliates, and Employee will not combine or conspire with any other employee of
the  Company  or any  other  person  for the  purpose  of  organizing  any  such
competitive business activity.

                  b.   Non-Competition   After   Employment  Term.  The  parties
acknowledge that Employee will acquire much knowledge and information concerning
the  business  of the  Company and its  affiliates  as the result of  Employee's
employment.  The parties further acknowledge that the scope of business in which
Company is engaged as of the date of execution of this  Agreement is  world-wide
and very  competitive and one in which few companies can  successfully  compete.
Competition  by Employee in that  business  after this  Agreement is  terminated
would severely injure Company. Accordingly,  until one (1) year, or a reasonable
term  determined  by state law,  after this  Agreement is terminated or Employee
leaves the employment of Company for any reason whatsoever, Employee will not:

                  (1)      Within any  jurisdiction  or marketing  area in which
                           Company or any of its affiliates is doing business or
                           is qualified to do business,  directly or  indirectly
                           manage,  operate,  join,  control,  or participate or
                           become  interested  in or  be  connected  with  as an
                           employee,  partner, officer,  director,  stockholder,
                           consultant, or investor, any corporation,
                                      - 6 -
<PAGE>
                           partnership,  or other business entity other than the
                           Company  or its  affiliates,  which  shall  operate a
                           business in competition  with the business  conducted
                           by the  Company  or its  affiliates.  Nothing  herein
                           shall  prohibit  Employee  from  owning,  solely  for
                           investment  purposes,  publicly-traded  securities of
                           any  company  which  operates  a  business  otherwise
                           covered by this Section, provided that such ownership
                           constitutes   less   than  1%  of  the   issued   and
                           outstanding  equity or debt  securities,  as the case
                           may be, of said company.

                  (2)      Persuade  or  attempt  to  persuade   any   potential
                           customer  or  client to which  Company  or any of its
                           affiliates has made a proposal or sale, or with which
                           Company  or any of its  affiliates  has  been  having
                           discussions, not to transact business with Company or
                           such affiliate,  or instead to transact business with
                           another person or organization;

                  (3)      Solicit  the  business  of  any  company  which  is a
                           customer  or  client  of  the  Company  or any of its
                           affiliates at any time during  Employee's  employment
                           by the Company,  or was its customer or client within
                           3  years  prior  to  the  date  of  this   Agreement,
                           provided, however, if Employee becomes employed by or
                           represents a business that exclusively sells products
                           that do not compete with  products  then  marketed or
                           intended to be marketed by the Company,  such contact
                           shall be permissible; or

                  (4)      Solicit,  endeavor to entice away from the Company or
                           any of its  affiliates,  or otherwise  interfere with
                           the  relationship  of  the  Company  or  any  of  its
                           affiliates  with,  any person who is  employed  by or
                           otherwise engaged to perform services for the Company
                           or any  of its  affiliates,  whether  for  Employee's
                           account  or for the  account  of any other  person or
                           organization.

                  c. Modification.  The covenants set forth in Sections 9 and 10
shall be construed  as  independent  of any other  covenant or provision of this
Agreement  or any other  agreement.  The  Company  may  reduce  the scope of the
obligations  under the covenant  unilaterally  and without  consent of any other
person or entity, effective upon giving notice thereof.

                  d. Time and Territory Reduction.  If the period of time and/or
territory  described  above  are  held  to be in  any  respect  an  unreasonable
restriction,  it is agreed that the court so holding may reduce the territory to
which the restriction pertains or the period of time in which it operates or may
reduce both such territory and such period,  to the minimum extent  necessary to
render such provision enforceable.
                                      - 7 -
<PAGE>
                  e. Survival.  The  obligations  described in Sections 9 and 10
shall survive any termination of this Employment Agreement or any termination of
the employment relationship created hereunder.

         11. Return of the Company's  Materials.  Upon the  termination  of this
Agreement,  Employee  shall  promptly  return to the Company  all files,  credit
cards, keys,  instruments,  equipment,  and other materials owned or provided by
the Company.

         12. Insurance. The Company shall use commercially reasonable efforts to
carry director's and officer's  professional  liability  insurance  coverage for
Employee while in the performance of Employee's duties hereunder.

         13. Remedies.  In addition to other remedies provided by law or equity,
upon a breach by Employee of any of the covenants  contained herein, the Company
shall be entitled to have a court of competent  jurisdiction enter an injunction
against  Employees  prohibiting  any further  breach of the covenants  contained
herein.  The parties  further agree that the services to be performed  hereunder
are of a unique,  special,  and  extraordinary  character and that any breach or
threatened  breach  by  Employee  of any  provision  of  Section 9 or 10 of this
Agreement  shall cause the  Company  irreparable  harm which  cannot be remedied
solely by damages.  Therefore,  in the event of any  controversy  concerning the
rights or obligations under this Agreement,  such rights or obligations shall be
enforceable in a court of competent jurisdiction at law or equity by a decree of
specific  performance  or, if the Company elects,  by obtaining  damages or such
other relief as the Company may elect to pursue. Such remedies,  however,  shall
be cumulative  and  nonexclusive  and shall be in addition to any other remedies
which the Company may have.  The parties agree that in the event of  litigation,
venue shall lie exclusively in Maricopa County, Arizona.

         14.  Common Law of Torts or Trade  Secrets.  Nothing in this  Agreement
shall be construed  to limit or negate the common law of torts or trade  secrets
where  such  common  law  provides  Company  with  broader  protection  than the
protection provided by this Agreement.

         15. Nondelegability of Employee's Rights and Company Assignment Rights.
The obligations, rights, and benefits of Employee hereunder are personal and may
not be delegated,  assigned,  or transferred in any manner  whatsoever,  nor are
such  obligations,  rights,  or  benefits  subject  to  involuntary  alienation,
assignment, or transfer. The Company may transfer its obligations hereunder to a
subsidiary, affiliate or successor.

         16. Notices. All notices,  demands, and communications required by this
Agreement  shall be in  writing  and shall be deemed to have been  given for all
purposes  when  sent to the  respective  addresses  set  forth  below,  (i) upon
personal delivery, (ii) one day after being sent, when sent by overnight courier
service to and from locations within the continental United States,  (iii) three
days after posting when sent by registered, certified, or regular United States
                                      - 8 -
<PAGE>
mail, with postage prepaid and return receipt requested,  or (iv) on the date of
transmission when sent by confirmed facsimile.

                  If to the Company:           M.D. Labs, Inc.
                                               1719 W. University Drive
                                               Suite 187
                                               Tempe, Arizona 85281
                                               Attn: Hooman Nikzad
                                               Chief Executive Officer

                            Copy to:           Quarles & Brady
                                               One E. Camelback Road
                                               Suite 400
                                               Phoenix, Arizona 85012
                                               Attn: Paul M. Gales, Esq.

                     If to Employee:           Todd P. Belfer
                                               4422 North 24th Street
                                               Phoenix, Arizona  85016
                                               Phone: 602-508-0155
                                               Facsimile:    602-957-8027

(Or when sent to such other address as any party shall specify by written notice
so given.)

         17. Entire  Agreement.  This  Agreement  constitutes  the final written
expression of all of the agreements  between the parties,  and is a complete and
exclusive  statement  of those  terms.  It  supersedes  all  understandings  and
negotiations  concerning  the matters  specified  herein.  Any  representations,
promises,  warranties, or statements made by either party that differ in any way
from the terms of this written Agreement shall be given no force or effect.  The
parties specifically represent,  each to the other, that there are no additional
or supplemental agreements between them related in any way to the matters herein
contained unless specifically  included or referred to herein. No addition to or
modification  of any provision of this Agreement shall be binding upon any party
unless made in writing and signed by all parties.

         18. Waiver. The waiver by either party of the breach of any covenant or
provision in this Agreement shall not operate or be construed as a waiver of any
subsequent breach by either party.

         19.  Invalidity of Any Provision.  The provisions of this Agreement are
severable,  it being  the  intention  of the  parties  hereto  that  should  any
provisions   hereof  be   invalid   or   unenforceable,   such   invalidity   or
unenforceability of any provision shall not affect the remaining
                                      - 9 -
<PAGE>
provisions hereof, but the same shall remain in full force and effect as if such
invalid or unenforceable provisions were omitted.

         20.  Applicable  Law. This Agreement shall be governed by and construed
in accordance  with the internal  laws of the State of Arizona  exclusive of the
conflict of law provisions thereof.

         21.  Attorneys' Fees. If any party reasonably  employs legal counsel to
bring an action at law or other  proceedings  against the other party to enforce
any of the  terms  hereof,  the  party  prevailing  in any such  action or other
proceeding  shall be paid by the other party its reasonable  attorneys'  fees as
well as court costs, all as determined by the court and not a jury.

         22.  Headings;  Construction.   Headings  in  this  Agreement  are  for
informational purposes only and shall not be used to construe the intent of this
Agreement.  The language in all parts of this Employment  Agreement shall in all
cases be construed as a whole according to its fair meaning and not strictly for
nor against any party.

         23. Counterparts;  Facsimile Signatures. This Agreement may be executed
simultaneously  in any number of counterparts,  each of which shall be deemed an
original but all of which together shall  constitute one and the same agreement.
Delivery  by any party of a  facsimile  signature  to the other  parties to this
Agreement  shall  constitute  effective  delivery  by said party of an  original
counterpart signature to this Agreement.

         24. Binding Effect;  Benefits. This Agreement shall be binding upon and
shall  inure to the benefit of the parties  hereto and their  respective  heirs,
successors,  executors,  administrators,  and assigns.  Notwithstanding anything
contained  in  this  Agreement  to the  contrary,  nothing  in  this  Agreement,
expressed or implied, is intended to confer on any person other than the parties
hereto or their respective heirs,  successors,  executors,  administrators,  and
assigns any rights, remedies,  obligations, or liabilities under or by reason of
this Agreement.

         25.  Binding  Effect on  Marital  Community.  Employee  represents  and
warrants to the Company that he has the power to bind his marital  community (if
any) to all terms and provisions of this agreement by his execution hereof.
                                     - 10 -
<PAGE>
         IN  WITNESS  WHEREOF,  each of the  parties  hereto has  executed  this
Employment  Agreement and caused the same to be duly  delivered on its behalf as
of June 1, 1996.

                                        M.D. LABS, INC.,
                                        a Delaware corporation



                                        By______________________________________
                                          Hooman Nikzad, Chief Executive Officer

                                                                       "COMPANY"





                                        ________________________________________
                                        TODD P. BELFER

                                                                      "EMPLOYEE"
                                     - 11 -

                     CONSULTING AND NONCOMPETITION AGREEMENT

                  This    Consulting   And    Noncompetition    Agreement   (the
"Agreement"),  which shall be  effective  as of June 1, 1996,  is by and between
M.D. Labs, Inc., a Delaware corporation ("M.D. Labs" or "Company") and Harvey A.
Belfer ("Consultant").

                                    RECITALS

                  A.  Consultant is qualified and experienced in the business of
consulting  in  connection  with the  Company's  industry  and general  business
matters.

                  B. The Company  desires to contract with Consultant to provide
the services of Consultant to the Company on an as-needed basis.

                  C. Consultant represents that he can perform those services in
a high-quality manner based on his qualifications and experience.

                  D. It is deemed to be to the mutual  advantage  of the Company
and  Consultant to enter into this  Agreement  upon the terms and conditions set
forth below.

                                   AGREEMENTS

                  In  consideration  of the mutual  promises and  covenants  set
forth herein and for other valuable  consideration,  the receipt and sufficiency
of which are hereby acknowledged, it is hereby agreed as follows:

                  1.  Engagement as a  Consultant.  The Company  hereby  engages
         Consultant  and  Consultant  hereby  accepts such  engagement  with the
         Company as a consultant in accordance with the terms and conditions set
         forth herein. Consultant agrees to provide his services and will devote
         his skill, knowledge,  and attention to the business of the Company and
         the performance of Consultant's duties under this Agreement.

                  2. Term.  This  engagement  of Consultant by the Company shall
         commence on June 1, 1996, and continue until May 31, 1999.  Thereafter,
         this  Agreement  may be renewed only by a written  agreement  signed by
         both parties.

                  3. Duties. Consultant agrees that he shall be available to the
         Company,  as may be requested  by the Company,  during the term of this
         Agreement.  Consultant  shall be responsible  for the following  duties
         during the term of this Agreement:

                           a. Provide consulting services in connection with the
                  manufacturing operations,  marketing, and sales activities and
                  business affairs of the Company,
<PAGE>
                  as may be assigned by the Chief Executive  Officer or Board of
                  Directors of the Company from time to time;

                           b.  Perform  such other  duties as may be assigned by
                  the  Chief  Executive  Officer  or Board of  Directors  of the
                  Company from time to time.

                  Consultant agrees to serve the Company faithfully, diligently,
         and to the  best  of  his  ability  and to  devote  his  working  time,
         attention,  and energies to the Company's  business as required for the
         efficient and timely  performance  of  Consultant's  duties  hereunder.
         Consultant  shall act in the best interests of the Company at all times
         in performing his duties and responsibilities hereunder.

                  4.  Compensation.  Consultant  shall  receive  as  his  entire
         compensation  from the  Company  for his  services  hereunder  a fee of
         $12,000 for the year ending May 31, 1997. The Consultant  shall be paid
         by Company check mailed to  Consultant at the address  appearing in (or
         subsequently  designated  pursuant  to)  Section of this  Agreement  at
         regularly scheduled intervals determined by the Company. This fee shall
         increase ten percent (10%) annually in each of the years ending May 31,
         1998 and 1999.

                  5. Expense  Reimbursement.  The Company shall pay all ordinary
         and reasonable  expenses of Consultant  incurred in connection with the
         rendering of services to the Company as a  consultant  pursuant to this
         Agreement,  upon  submission  of  appropriate  vouchers and  supporting
         documentation  in  accordance  with the  Company's  usual and  ordinary
         practices,  provided  that such expenses are  reasonable  and necessary
         business  expenses of the Company,  and provided further that all items
         for which at least $250 in  reimbursement is requested must be approved
         in advance,  in writing,  by the Company.  Company shall also reimburse
         Consultant for his reasonable family health care insurance premiums.

                  6. Return of the Company's Materials.  Upon the termination of
         this  Agreement,  Consultant  shall promptly  return to the Company all
         files, credit cards, keys, instruments, equipment, and other materials,
         if any, owned or provided by the Company.

                  7. Terms of  Consulting  Arrangement.  Consultant  will be the
         sole judge of the means,  manner,  and method by which he will  perform
         the services  contracted for, the times at which those services will be
         performed (within the deadlines reasonably  established by the Company)
         and the sequence of performance of those services.  Consultant warrants
         that he will  perform the  services  for which he has  contracted  in a
         timely and workmanlike  manner.  Consultant  acknowledges  that for the
         term of this  Agreement,  Consultant  is not an employee of the Company
         and that he will not be treated or regarded as the  Company's  employee
         under the laws or regulations of any government or governmental agency.
         This Agreement does not constitute a hiring by
                                      - 2 -
<PAGE>
         either party.  The  Consultant and the Company will be and shall remain
         independent  contractors  bound by the  provisions  of this  Agreement.
         Consultant is under the control of the Company only as to the result of
         Consultant's work and not as to the means, manner, and methods by which
         such result is  accomplished.  Neither party hereto shall be liable for
         any  obligation  incurred by the other except as provided in Section of
         this Agreement.  The Company shall not withhold from  Consultant's fees
         any amounts for income taxes or other similar assessments.  The Company
         shall  provide  the use of its  employees  as  deemed  suitable  by the
         Company to assist Consultant in carrying out his duties hereunder.

                  8.  Non-Competition.  Consultant  will not, during the term of
         this Agreement,  directly or indirectly manage, operate, join, control,
         or  participate  or become  interested  in or be  connected  with as an
         employee,  partner,  officer,  director,  stockholder,  consultant,  or
         investor, any corporation,  partnership, or other business entity other
         than the Company or its  affiliates,  which shall operate a business in
         competition  with  the  business   conducted  by  the  Company  or  its
         affiliates.  Nothing  herein  shall  prohibit  Consultant  from owning,
         solely  for  investment  purposes,  publicly-traded  securities  of any
         company which operates a business  otherwise  covered by this Section ,
         provided that such ownership constitutes less than 1% of the issued and
         outstanding  equity  or debt  securities,  as the case may be,  of such
         company.

                  9.  Confidential  Treatment of Information.  Consultant  shall
         not,  either  during or after the term of this  Agreement,  directly or
         indirectly  publish or  disclose  to any third  party any  confidential
         information  pertaining  to the  business  of the  Company  unless  the
         Company gives written  authorization to do so. Such  information  shall
         not be used apart from Company business without the written approval of
         the  Company.  Such  prohibition  against  disclosure  applies  to  all
         confidential  information,  such as  non-public  information  about the
         Company's finances,  any trade secrets, and any other information which
         is normally kept confidential by the Company.

                  10.  Remedies.  The parties further agree that the services to
         be performed  hereunder  are of a unique,  special,  and  extraordinary
         character and that any breach or threatened breach by Consultant of any
         provision  of Section or 9 of this  Agreement  shall  cause the Company
         irreparable harm which cannot be remedied solely by damages. Therefore,
         in the event of any  controversy  concerning  the rights or obligations
         under this Agreement,  such rights or obligations  shall be enforceable
         in a  court  of  competent  jurisdiction  at  law  or in  equity  by an
         injunction  or a decree of  specific  performance  or,  if the  Company
         elects,  by  obtaining  damages or such other relief as the Company may
         elect to  pursue.  Such  remedies,  however,  shall be  cumulative  and
         nonexclusive  and shall be in addition to any other  remedies which the
         Company may have.
                                      - 3 -
<PAGE>
                  11.  Indemnity.  The  Company  shall  not be  liable  for  and
         Consultant shall indemnify,  defend, and hold the Company harmless from
         any liability,  claim, or loss whatsoever for any injury to or death of
         Consultant, or for any damages to Consultant's property or the property
         of any of its  representatives  or agents unless and only to the extent
         that such loss or damage is directly  caused by the  negligence  of the
         Company or its employees.  Consultant shall also indemnify, defend, and
         hold the Company harmless from any liability, claim, or loss whatsoever
         for any personal injury or death and for any property damage  resulting
         from  the  conduct  or  negligent   omission  of   Consultant   or  his
         representatives or agents.

                  12. Taxes.  Consultant  shall be responsible for reporting and
         paying any and all taxes  imposed  by any  government  or  governmental
         entity  whatsoever  in  connection  with  the  payments  to  Consultant
         contemplated  by this  Agreement,  and  shall  indemnify  and  hold the
         Company harmless with respect thereto.

                  13.  Assignment.  This  Agreement and the  respective  rights,
         duties, and obligations of Consultant hereunder may not be assigned and
         may not be delegated by Consultant,  but the respective rights, duties,
         and  obligations of the Company  hereunder may be assigned or delegated
         by the Company to a parent or affiliated corporation or entity.

                  14. Notice. All notices,  demands,  instructions,  or requests
         relating to this Agreement shall be in writing and, except as otherwise
         provided  herein,  shall be deemed to have been given for all  purposes
         (i) upon personal delivery, (ii) one day after being sent, when sent by
         professional overnight courier service from and to locations within the
         Continental  United States,  (iii) five days after posting when sent by
         United  States  registered  or  certified  mail,  with  return  receipt
         requested and postage paid,  or (iv) on the date of  transmission  when
         sent by  facsimile  with a hard-copy  confirmation;  if directed to the
         person or entity to which  notice is to be given at his or its  address
         set forth in this  Agreement  or at any other  address  such  person or
         entity has designated by notice.

                  To the Company:           M.D. LABS, INC.
                                            1719 W. University Drive
                                            Suite 187
                                            Tempe, Arizona  85281
                                            Attn:       Chief Executive Officer
                                            Ph:         602-437-0127
                                            Fax:        602-437-8561
                                      - 4 -
<PAGE>
                  To Consultant:            HARVEY A. BELFER
                                            6109 East Indian Bend
                                            Paradise Valley, Arizona  85253
                                            Ph:         602-922-8888
                                            Fax:        602-922-4555

                  15. Entire  Agreement.  This Agreement  constitutes  the final
         written expression of all of the agreements between the parties (except
         those relating to  Consultant's  service as a director of the Company),
         and is a complete and exclusive statement of those terms. It supersedes
         all  understandings  and negotiations  concerning the matters specified
         herein. Any representations,  promises,  warranties, or statements made
         by either  party that differ in any way from the terms of this  written
         Agreement shall be given no force or effect.  The parties  specifically
         represent,  each  to  the  other,  that  there  are  no  additional  or
         supplemental  agreements between them related in any way to the matters
         herein contained unless specifically included or referred to herein. No
         addition to or modification of any provision of this Agreement shall be
         binding  upon any  party  unless  made in  writing  and  signed  by all
         parties.

                  16.  Waiver.  The waiver by either  party of the breach of any
         covenant  or  provision  in this  Agreement  shall  not  operate  or be
         construed as a waiver of any subsequent breach by either party.

                  17.  Invalidity  of Any  Provision.  The  provisions  of  this
         Agreement are  severable,  it being the intention of the parties hereto
         that should any  provisions  hereof be invalid or  unenforceable,  such
         invalidity or  unenforceability  of any provision  shall not affect the
         remaining  provisions  hereof,  but the same shall remain in full force
         and effect as if such invalid or unenforceable provisions were omitted.

                  18.  Applicable  Law. This Agreement  shall be governed by and
         construed  and enforced in  accordance  with the  internal  laws of the
         State of Arizona,  exclusive of the conflict of law provisions thereof,
         and the parties agree that any litigation  pertaining to this Agreement
         shall be in courts located in Maricopa County, Arizona.

                  19. Headings. Headings in this Agreement are for informational
         purposes  only and shall  not be used to  construe  the  intent of this
         Agreement.

                  20.    Counterparts.    This   Agreement   may   be   executed
         simultaneously  in any number of  counterparts,  each of which shall be
         deemed an original but all of which together  shall  constitute one and
         the same agreement.
                                      - 5 -
<PAGE>
                  21. Binding Effect;  Benefits. This Agreement shall be binding
         upon and shall  inure to the  benefit of the  parties  hereto and their
         respective heirs, successors, executors,  administrators,  and assigns.
         Notwithstanding  anything  contained in this Agreement to the contrary,
         nothing in this Agreement,  expressed or implied, is intended to confer
         on any person other than the parties hereto or their respective  heirs,
         successors,   executors,   administrators,   and  assigns  any  rights,
         remedies,  obligations,  or  liabilities  under  or by  reason  of this
         Agreement.

                  22. Attorneys' Fees. If any party finds it necessary to employ
         legal counsel or to bring an action at law or other proceeding  against
         the  other  party  to  enforce  any  of the  terms  hereof,  the  party
         prevailing in any such action or other  proceeding shall be paid by the
         other party its reasonable  attorneys'  fees as well as court costs all
         as determined by the court and not a jury.

         IN  WITNESS  WHEREOF,  each of the  parties  hereto has  executed  this
Consulting  Agreement and caused the same to be duly  delivered on its behalf as
of the date first above written.


                                             M.D. LABS, INC.



                                             ___________________________________
                                             By:  Hooman Nikzad
                                             Its:  Chief Executive Officer

                                                                   the "COMPANY"



                                             HARVEY A. BELFER


                                             ___________________________________
                                             By:

                                                                    "CONSULTANT"
                                      - 6 -

                              EMPLOYMENT AGREEMENT


         This Employment  Agreement (the "Agreement") is made as of June 1, 1996
by and between M.D. LABS,  INC., a Delaware  corporation  (the  "Company"),  and
FRADJOLLAH DJAHANDIDEH (the "Employee").

                                    RECITALS

         A. The Company wishes to employ the Employee,  and the Employee  wishes
to be employed by the Company.

         B. The  parties  wish to set  forth in this  Agreement  the  terms  and
conditions of such employment.

                                   AGREEMENTS

         In  consideration of the mutual promises and covenants set forth herein
and for other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties agree as follows:

         1.  Employment.  Subject to the terms and conditions of this Agreement,
the Company  employs  the  Employee to serve in an  executive  capacity  and the
Employee accepts such employment and agrees to dedicate all of his business time
and effort to Company business and perform such reasonable  responsibilities and
duties  as may be  assigned  to him  from  time to time by the  Company's  Chief
Executive  Officer and/or Board of Directors (the  "Board").  Employee's  titles
shall be Vice  President -  Operations,  Secretary and Treasurer of the Company,
with such  executive  responsibilities  as may be assigned from time to time by,
and  subject to the  direction  of,  the  Chairman,  the Board  and/or the Chief
Executive  Officer.  Employee  shall  report  directly  to the  Chief  Executive
Officer. Subject to Section 8, such title and duties may be changed from time to
time by the Board;  so long as Employee is maintained  in an executive  capacity
throughout the term of his employment.

         2. Term.  This  employment of Employee by the Company shall commence on
the date  hereof,  and  continue  until May 31,  1999.  The term may be extended
thereafter by written agreement of the parties.

         3.       Compensation.

                  a. Salary.  During the year ending May 31,  1997,  the Company
shall pay  Employee  a base  annual  salary,  before  deducting  all  applicable
withholdings,  at the rate of $85,000 per year,  payable in accordance  with the
Company's  standard  payroll  policies.  This salary  level shall  increase  ten
percent (10%) annually in each of the years ending May 31, 1998 and 1999.
<PAGE>
                  b. Incentive  Plan. The Company may establish and implement an
incentive  compensation system which will provide additional  incentive payments
to Employee based upon his performance and the performance of the Company.

         4.  Fringe  Benefits.  In  addition  to the  options  for shares of the
Company's  Common  Stock  available  to  Employee  under the same terms as those
available to Company  employees,  and any other employee benefit plans generally
available to Company  employees,  the Company  shall include the Employee in any
group medical  insurance plan  maintained for the employees of the Company.  The
manner  of  implementation  of such  benefits  with  respect  to such  items  as
procedures  and  amounts  is  discretionary   with  the  Company  but  shall  be
commensurate with Employee's executive status and shall include medical coverage
for Employee and Employee's family members who are eligible under the applicable
plans.

         5. Vacation. Employee shall be entitled to vacation with pay in keeping
with Employee's previously established vacation practices. In addition, Employee
shall be entitled to such  holidays as the Company may approve for its executive
personnel.

         6. Expense Reimbursement.  In addition to the compensation and benefits
provided  above,  the  Company  shall pay all  reasonable  expenses  of Employee
incurred  in  connection   with  the   performance  of  Employee's   duties  and
responsibilities  to the Company pursuant to this Agreement,  upon submission of
appropriate  vouchers  and  supporting  documentation  in  accordance  with  the
Company's  usual  and  ordinary  practices,  provided  that  such  expenses  are
reasonable and necessary business expenses of the Company. The Company shall pay
Employee's  reasonable  cellular  telephone expenses that are related to Company
business.

         7. Termination.  The Company may terminate Employee's  employment prior
to the expiration of this Agreement, in the manner provided below:

                  a. For Cause. The Company may terminate Employee's  employment
by the  Company  prior to the  expiration  of this  Agreement,  for cause,  upon
written  notice to the  Employee  stating  the facts  constituting  such  cause,
provided  that  Employee  shall have 20 days  following  such notice to cure any
conduct or act, if curable, alleged to provide grounds for termination for cause
hereunder. In the event of termination for cause, the Company shall be obligated
to pay  the  Employee  only  the  base  salary  due  him  through  the  date  of
termination.  Cause shall include  willful  failure to abide by  instructions or
policies  from  or  set  by the  Company,  commission  of a  felony  or  serious
misdemeanor  offense or pleading guilty or nolo  contendere to same,  Employee's
material breach of this  Agreement,  or breach by Employee of any other material
obligation to the Company.


                  b. Without  Cause.  The Chairman or the Company may  terminate
Employee's employment by the Company at any time immediately,  without cause, by
giving written notice

                                      - 2 -
<PAGE>
to the Employee.  If the Company terminates under this Section 7.b  it shall pay
to  Employee a lump-sum  amount  equal to the (i) the greater of the base salary
due for the  remaining  term as set forth in  Section 2 hereof or (ii) 12 months
base salary,  in either case less  applicable  withholdings  and shall  continue
coverage of Employee and  Employee's  dependents  under its medical plans for 12
months or until  Employee  secures  other  employment  (unless  continuation  of
coverage under such plans is unfeasible, in which event the Company will provide
substantially similar benefits).

                  c. Disability. If during the term of this Agreement,  Employee
experiences  a  permanent  disability  (as  defined in Section  22(e)(3)  of the
Internal Revenue Code of 1986, as amended),  the Company shall have the right to
terminate this Agreement  without further  obligation  hereunder  except for any
bonus  amount  payable in  accordance  with the next  sentence  and any  amounts
payable  pursuant  to  disability   plans  generally   applicable  to  executive
employees.  Within 90 days after the end of the fiscal year in which termination
pursuant to this Section 7.c occurs,  so long as Employee is in full  compliance
with  this  Agreement,  Employee  shall be  entitled  to  receive  an  incentive
compensation  payment  (calculated  and  payable  in the manner  referred  to in
Section 2.b,  if any, based upon the Company's  financial  performance  for such
fiscal  year,  which shall be prorated to the extent that  Employees  employment
during such fiscal year was for a period of less than the full year.

                  d.  Death.  If the  Employee  dies  during  the  term  of this
Agreement, this Agreement shall terminate immediately,  and the Employee's legal
representative  shall be  entitled  to receive  the base  salary due to Employee
through  the 60th day from the date on which his death shall have  occurred  and
any other  death  benefits  generally  applicable  to  executive  employees.  In
addition,  Employee's  death occurs,  Employee's legal  representative  shall be
entitled to receive,  at the end of the first quarter of the year  following the
fiscal year in which such death shall have occurred,  an incentive  compensation
payment  (calculated  and payable in the manner referred to in Section 2.b),  if
any, based upon the Company's financial  performance for such fiscal year, which
shall be prorated to the extent that  Employee's  employment  during such fiscal
year was for a period of less than the full year.

         8.       Change in Control.

                  a. Severance Benefits.  Notwithstanding  Section 7.b,  if your
employment  with the  Company  terminates  within  12  months  after a Change in
Control  (as  defined  in  Section  8.b  below),  you shall be  entitled  to the
severance  benefits  provided in Section 8.d unless (i) such  termination  is in
accordance  with Section 7.a, 7.c or 7.d above;  or (ii) such  termination is by
you for other than Good Reason (as defined in Section 8.c below).

                  b. "Change in Control" shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding securities under

                                      - 3 -
<PAGE>
an employee  benefit  plan of the  Company or a  corporation  owned  directly or
indirectly  by the  stockholders  of  the  Company  in  substantially  the  same
proportions  as their  ownership  of stock of the  Company,  is or  becomes  the
"beneficial  owner"  (as  defined in Rule 13d-3  under  said Act),  directly  or
indirectly,  of securities of the Company representing  one-third or more of the
total voting power  represented by the Company's then outstanding  Common Stock,
or (ii)  during  any period of two  consecutive  years,  individuals  who at the
beginning  of such period  constitute  the Board of Directors of the Company and
any new director  whose  election by the Board of Directors  or  nomination  for
election  by the  Company's  stockholders  was  approved  by a vote of at  least
two-thirds (2/3) of the directors then still in office who either were directors
at the beginning of the period or whose  election or nomination for election was
previously so approved,  cease for any reason to constitute a majority  thereof,
or (iii) the  stockholders of the Company approve a merger or  consolidation  of
the Company  with any other  corporation,  other than a merger or  consolidation
which would  result in the Common Stock of the Company  outstanding  immediately
prior thereto  continuing to represent  (either by remaining  outstanding  or by
being converted into Common Stock of the surviving  entity) at least  two-thirds
of the total voting power represented by the Common Stock of the Company or such
surviving entity outstanding immediately after such merger or consolidation,  or
the  stockholders of the Company  approve a plan of complete  liquidation of the
Company or an agreement  for the sale or  disposition  by the Company of (in one
transaction or a series of transactions)  all or substantially all the Company's
assets.

                  c. "Good Reason" shall mean,  for purposes of this  Agreement,
(i) without  your  express  written  consent,  the  assignment  to you of duties
inconsistent with your positions,  duties,  responsibilities and status with the
Company immediately prior to the Change in Control, or a demotion or a change in
titles or offices as in effect  immediately prior to a Change in Control (except
in connection  with  termination of your  employment in compliance  with Section
7.1, 7.c or 7.d above);  or (ii) a material  breach by the Company of any of its
obligations  hereunder  which (if curable) is not cured by the Company within 20
days after written notice thereof.

                  d. Amount of Benefit. If the Employee is entitled to severance
benefits  under  Section  8.a,  the  amount of such  benefit  shall  equal (i) a
lump-sum  payment  not to exceed  2.99 times the "Base  Amount" (as such term is
defined in Section 280G of the  Internal  Revenue  Code of 1986)  applicable  to
Employee,  whether or not the provisions of Section 280G actually applies to the
payment;  (ii) a continuation of medical coverage in the manner  contemplated in
Section  7.b above;  and (iii)  such other  benefits  to which the  Employee  is
entitled  under  the  Company's   benefits  plans  and  policies  as  in  effect
immediately prior to the Change in Control with respect to terminated Employees.

         9. Confidentiality. Employee acknowledges that Employee may receive, or
contribute to the production  of,  confidential,  proprietary,  and trade secret
information  of the  Company,  and  others  with whom the  Company  may be doing
business. For purposes of this Agreement,

                                      - 4 -
<PAGE>
Employee  agrees  that  "Confidential  Information"  shall mean  information  or
material proprietary to the Company or designated as Confidential Information by
the Company and not generally  known by  non-Company  personnel,  which Employee
develops or to which  Employee may obtain  knowledge  or access  through or as a
result of Employee's relationship with Company (including information conceived,
originated,  discovered,  or  developed  in  whole  or  in  part  by  Employee).
Confidential Information includes, but is not limited to, the following types of
information and other information of a similar nature (whether or not reduced to
writing):  discoveries,  inventions,  ideas,  concepts,  research,  development,
processes, procedures, "know-how", formulae, marketing techniques and materials,
marketing  and  development  plans,  business  plans,  customer  names and other
information  related to  customers,  price lists,  pricing  policies,  financial
information,   employee   compensation,   and  computer  programs  and  systems.
Confidential Information also includes any information described above which the
Company  obtains from another party and which the Company  treats as proprietary
or designates as Confidential Information,  whether or not owned by or developed
by the Company.  Employee acknowledges that the Confidential Information derives
independent economic value, actual or potential,  from not being generally known
to, and not being  readily  ascertainable  by proper means by, other persons who
can obtain economic value from its disclosure or use.

         Information  publicly  known without  breach of this  Agreement that is
generally  employed by the trade at or after the time  Employee  first learns of
such information,  or generic information or knowledge which Employee would have
learned in the  course of similar  employment  or work  elsewhere  in the trade,
shall not be deemed part of the Confidential Information.

         Employee further agrees:

                  a. To furnish  Company on demand,  at any time during or after
employment,  a complete list of the names and addresses of all present,  former,
and  potential  customers  and other  contacts  gained  while an employee of the
Company,  whether  or not in the  possession  or  within  the  knowledge  of the
Company.

                  b.  That  all  notes,  computer  or  disk  memory,  memoranda,
documentation,   and  records  in  any  way   incorporating  or  reflecting  any
Confidential  Information shall belong exclusively to the Company,  and Employee
agrees to turn over all  copies  of such  materials  in  Employee's  control  to
Company upon  request or upon  termination  of  Employee's  employment  with the
Company,  regardless  of whether  the  materials  were  prepared  by or with the
assistance of Employee.

                  c. That while employed by the Company and thereafter  Employee
will hold in confidence and not directly or indirectly reveal, report,  publish,
disclose,  or  transfer  any of the  Confidential  Information  to any person or
entity, or utilize any of the Confidential  Information for any purpose,  except
in the course of Employee's work for the Company.

                                      - 5 -
<PAGE>
                  d. That any ideas in whole or in part  conceived of or made by
Employee  during the term of his  employment  or  relationship  with the Company
which are made  through the use of any of the  Confidential  Information  of the
Company or any of the Company's equipment,  facilities,  trade secrets, or time,
or which  result from any work  performed  by Employee  for the  Company,  shall
belong exclusively to the Company and shall be deemed a part of the Confidential
Information for purposes of this  Agreement.  Employee hereby assigns and agrees
to assign to the  Company  all  rights in and to such  Confidential  Information
whether for purposes of obtaining  patent or copyright  protection or otherwise.
Employee shall acknowledge and deliver to the Company, without charge to Company
(but at its expense) such written instruments and do such other acts,  including
giving  testimony in support of Employee's  authorship or  inventorship,  as the
case may be,  necessary  in the  opinion  of the  Company  to obtain  patents or
copyrights  or to otherwise  protect or vest in the Company the entire right and
title in and to the Confidential Information.

         10.      Non-Competition.

                  a.  Non-Competition  During  Employment Term.  Employee agrees
that during the term of  Employee's  employment  by the Company,  Employee  will
devote all of Employee's  business time and effort to and give undivided loyalty
to the  Company,  and  will  not  engage  in any  way  whatsoever,  directly  or
indirectly,  in any  business  that  is  competitive  with  the  Company  or its
affiliates,  nor solicit, or in any other manner work for or assist any business
which is  competitive  with the  Company or its  affiliates.  During the term of
Employee's employment by the Company, Employee will undertake no planning for or
organization  of any  business  activity  competitive  with the  Company  or its
affiliates, and Employee will not combine or conspire with any other employee of
the  Company  or any  other  person  for the  purpose  of  organizing  any  such
competitive business activity.

                  b.   Non-Competition   After   Employment  Term.  The  parties
acknowledge that Employee will acquire much knowledge and information concerning
the  business  of the  Company and its  affiliates  as the result of  Employee's
employment.  The parties further acknowledge that the scope of business in which
Company is engaged as of the date of execution of this  Agreement is  world-wide
and very  competitive and one in which few companies can  successfully  compete.
Competition  by Employee in that  business  after this  Agreement is  terminated
would severely injure Company. Accordingly,  until one (1) year, or a reasonable
term  determined  by state law,  after this  Agreement is terminated or Employee
leaves the employment of Company for any reason whatsoever, Employee will not:

                  (1)      Within any  jurisdiction  or marketing  area in which
                           Company or any of its affiliates is doing business or
                           is qualified to do business,  directly or  indirectly
                           manage,  operate,  join,  control,  or participate or
                           become  interested  in or  be  connected  with  as an
                           employee,  partner, officer,  director,  stockholder,
                           consultant, or investor, any corporation,

                                      - 6 -
<PAGE>
                           partnership,  or other business entity other than the
                           Company  or its  affiliates,  which  shall  operate a
                           business in competition  with the business  conducted
                           by the  Company  or its  affiliates.  Nothing  herein
                           shall  prohibit  Employee  from  owning,  solely  for
                           investment  purposes,  publicly-traded  securities of
                           any  company  which  operates  a  business  otherwise
                           covered by this Section, provided that such ownership
                           constitutes   less   than  1%  of  the   issued   and
                           outstanding  equity or debt  securities,  as the case
                           may be, of said company.

                  (2)      Persuade  or  attempt  to  persuade   any   potential
                           customer  or  client to which  Company  or any of its
                           affiliates has made a proposal or sale, or with which
                           Company  or any of its  affiliates  has  been  having
                           discussions, not to transact business with Company or
                           such affiliate,  or instead to transact business with
                           another person or organization;

                  (3)      Solicit  the  business  of  any  company  which  is a
                           customer  or  client  of  the  Company  or any of its
                           affiliates at any time during  Employee's  employment
                           by the Company,  or was its customer or client within
                           3  years  prior  to  the  date  of  this   Agreement,
                           provided, however, if Employee becomes employed by or
                           represents a business that exclusively sells products
                           that do not compete with  products  then  marketed or
                           intended to be marketed by the Company,  such contact
                           shall be permissible; or

                  (4)      Solicit,  endeavor to entice away from the Company or
                           any of its  affiliates,  or otherwise  interfere with
                           the  relationship  of  the  Company  or  any  of  its
                           affiliates  with,  any person who is  employed  by or
                           otherwise engaged to perform services for the Company
                           or any  of its  affiliates,  whether  for  Employee's
                           account  or for the  account  of any other  person or
                           organization.

                  c. Modification.  The covenants set forth in Sections 9 and 10
shall be construed  as  independent  of any other  covenant or provision of this
Agreement  or any other  agreement.  The  Company  may  reduce  the scope of the
obligations  under the covenant  unilaterally  and without  consent of any other
person or entity, effective upon giving notice thereof.

                  d. Time and Territory Reduction.  If the period of time and/or
territory  described  above  are  held  to be in  any  respect  an  unreasonable
restriction,  it is agreed that the court so holding may reduce the territory to
which the restriction pertains or the period of time in which it operates or may
reduce both such territory and such period,  to the minimum extent  necessary to
render such provision enforceable.

                                      - 7 -
<PAGE>
                  e. Survival.  The  obligations  described in Sections 9 and 10
shall survive any termination of this Employment Agreement or any termination of
the employment relationship created hereunder.

         11. Return of the Company's  Materials.  Upon the  termination  of this
Agreement,  Employee  shall  promptly  return to the Company  all files,  credit
cards, keys,  instruments,  equipment,  and other materials owned or provided by
the Company.

         12. Insurance. The Company shall use commercially reasonable efforts to
carry director's and officer's  professional  liability  insurance  coverage for
Employee while in the performance of Employee's duties hereunder.

         13. Remedies.  In addition to other remedies provided by law or equity,
upon a breach by Employee of any of the covenants  contained herein, the Company
shall be entitled to have a court of competent  jurisdiction enter an injunction
against  Employees  prohibiting  any further  breach of the covenants  contained
herein.  The parties  further agree that the services to be performed  hereunder
are of a unique,  special,  and  extraordinary  character and that any breach or
threatened  breach  by  Employee  of any  provision  of  Section 9 or 10 of this
Agreement  shall cause the  Company  irreparable  harm which  cannot be remedied
solely by damages.  Therefore,  in the event of any  controversy  concerning the
rights or obligations under this Agreement,  such rights or obligations shall be
enforceable in a court of competent jurisdiction at law or equity by a decree of
specific  performance  or, if the Company elects,  by obtaining  damages or such
other relief as the Company may elect to pursue. Such remedies,  however,  shall
be cumulative  and  nonexclusive  and shall be in addition to any other remedies
which the Company may have.  The parties agree that in the event of  litigation,
venue shall lie exclusively in Maricopa County, Arizona.

         14.  Common Law of Torts or Trade  Secrets.  Nothing in this  Agreement
shall be construed  to limit or negate the common law of torts or trade  secrets
where  such  common  law  provides  Company  with  broader  protection  than the
protection provided by this Agreement.

         15. Nondelegability of Employee's Rights and Company Assignment Rights.
The obligations, rights, and benefits of Employee hereunder are personal and may
not be delegated,  assigned,  or transferred in any manner  whatsoever,  nor are
such  obligations,  rights,  or  benefits  subject  to  involuntary  alienation,
assignment, or transfer. The Company may transfer its obligations hereunder to a
subsidiary, affiliate or successor.

         16. Notices. All notices,  demands, and communications required by this
Agreement  shall be in  writing  and shall be deemed to have been  given for all
purposes  when  sent to the  respective  addresses  set  forth  below,  (i) upon
personal delivery, (ii) one day after being sent, when sent by overnight courier
service to and from locations within the continental United States,  (iii) three
days after posting when sent by registered, certified, or regular United States

                                      - 8 -
<PAGE>
mail, with postage prepaid and return receipt requested,  or (iv) on the date of
transmission when sent by confirmed facsimile.

                  If to the Company:           M.D. Labs, Inc.
                                               1719 W. University Drive
                                               Suite 187
                                               Tempe, Arizona 85281
                                               Attn: Hooman Nikzad
                                               Chief Executive Officer

                 Copy to:                      Quarles & Brady
                                               One E. Camelback Road
                                               Suite 400
                                               Phoenix, Arizona 85012
                                               Attn: Paul M. Gales, Esq.

                 If to Employee:               Fradjollah Djahandideh
                                               22663 Waterbury
                                               Woodland Hills, California  91364
                                               Phone: 602-947-3966
                                               Facsimile:    N/A


(Or when sent to such other address as any party shall specify by written notice
so given.)

         17. Entire  Agreement.  This  Agreement  constitutes  the final written
expression of all of the agreements  between the parties,  and is a complete and
exclusive  statement  of those  terms.  It  supersedes  all  understandings  and
negotiations  concerning  the matters  specified  herein.  Any  representations,
promises,  warranties, or statements made by either party that differ in any way
from the terms of this written Agreement shall be given no force or effect.  The
parties specifically represent,  each to the other, that there are no additional
or supplemental agreements between them related in any way to the matters herein
contained unless specifically  included or referred to herein. No addition to or
modification  of any provision of this Agreement shall be binding upon any party
unless made in writing and signed by all parties.

         18. Waiver. The waiver by either party of the breach of any covenant or
provision in this Agreement shall not operate or be construed as a waiver of any
subsequent breach by either party.

         19.  Invalidity of Any Provision.  The provisions of this Agreement are
severable,  it being  the  intention  of the  parties  hereto  that  should  any
provisions   hereof  be   invalid   or   unenforceable,   such   invalidity   or
unenforceability of any provision shall not affect the remaining

                                      - 9 -
<PAGE>
provisions hereof, but the same shall remain in full force and effect as if such
invalid or unenforceable provisions were omitted.

         20.  Applicable  Law. This Agreement shall be governed by and construed
in accordance  with the internal  laws of the State of Arizona  exclusive of the
conflict of law provisions thereof.

         21.  Attorneys' Fees. If any party reasonably  employs legal counsel to
bring an action at law or other  proceedings  against the other party to enforce
any of the  terms  hereof,  the  party  prevailing  in any such  action or other
proceeding  shall be paid by the other party its reasonable  attorneys'  fees as
well as court costs, all as determined by the court and not a jury.

         22.  Headings;  Construction.   Headings  in  this  Agreement  are  for
informational purposes only and shall not be used to construe the intent of this
Agreement.  The language in all parts of this Employment  Agreement shall in all
cases be construed as a whole according to its fair meaning and not strictly for
nor against any party.

         23. Counterparts;  Facsimile Signatures. This Agreement may be executed
simultaneously  in any number of counterparts,  each of which shall be deemed an
original but all of which together shall  constitute one and the same agreement.
Delivery  by any party of a  facsimile  signature  to the other  parties to this
Agreement  shall  constitute  effective  delivery  by said party of an  original
counterpart signature to this Agreement.

         24. Binding Effect;  Benefits. This Agreement shall be binding upon and
shall  inure to the benefit of the parties  hereto and their  respective  heirs,
successors,  executors,  administrators,  and assigns.  Notwithstanding anything
contained  in  this  Agreement  to the  contrary,  nothing  in  this  Agreement,
expressed or implied, is intended to confer on any person other than the parties
hereto or their respective heirs,  successors,  executors,  administrators,  and
assigns any rights, remedies,  obligations, or liabilities under or by reason of
this Agreement.

         25.  Binding  Effect on  Marital  Community.  Employee  represents  and
warrants to the Company that he has the power to bind his marital  community (if
any) to all terms and provisions of this agreement by his execution hereof.

                                     - 10 -
<PAGE>
         IN  WITNESS  WHEREOF,  each of the  parties  hereto has  executed  this
Employment  Agreement and caused the same to be duly  delivered on its behalf as
of June 1, 1996.

                                          M.D. LABS, INC.,
                                          a Delaware corporation



                                          By
                                            ------------------------------------
                                          Hooman Nikzad, Chief Executive Officer

                                                     "COMPANY"





                                          --------------------------------------
                                          FRADJOLLAH DJAHANDIDEH

                                                    "EMPLOYEE"



                                     - 11 -

                              EMPLOYMENT AGREEMENT


         This Employment  Agreement (the "Agreement") is made as of June 1, 1996
by and between M.D. LABS,  INC., a Delaware  corporation  (the  "Company"),  and
BRADLEY A. DENTON (the "Employee").

                                    RECITALS

         A. The Company wishes to employ the Employee,  and the Employee  wishes
to be employed by the Company.

         B. The  parties  wish to set  forth in this  Agreement  the  terms  and
conditions of such employment.

                                   AGREEMENTS

         In  consideration of the mutual promises and covenants set forth herein
and for other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties agree as follows:

         1.  Employment.  Subject to the terms and conditions of this Agreement,
the Company  employs  the  Employee to serve in an  executive  capacity  and the
Employee accepts such employment and agrees to dedicate all of his business time
and effort to Company business and perform such reasonable  responsibilities and
duties  as may be  assigned  to him  from  time to time by the  Company's  Chief
Executive Officer, President and/or Board of Directors (the "Board"). Employee's
titles shall be Chief Financial Officer,  Vice-President and Assistant Secretary
of the Company,  with  responsibility for the Company's  financial reporting and
related  functions and such executive  responsibilities  as may be assigned from
time to time by, and subject to the direction of, the Board, the Chief Executive
Officer  and/or the  President.  Employee  shall  report  directly  to the Chief
Executive  Officer.  Subject  to Section 8, such title and duties may be changed
from  time to time  by the  Board;  so long  as  Employee  is  maintained  in an
executive capacity throughout the term of his employment.

         2. Term.  This  employment of Employee by the Company shall commence on
the date  hereof,  and  continue  until May 31,  1999.  The term may be extended
thereafter by written agreement of the parties.

         3. Compensation.

                  a.  Salary.  During the year ending  December  31,  1996,  the
Company shall pay Employee a base annual salary, before deducting all applicable
withholdings,  at the rate of $65,000 per year,  payable in accordance  with the
Company's standard payroll policies. This
<PAGE>
salary level shall increase to $70,000 in the year ending  December 31, 1997 and
to $75,000 in the year ending December 31, 1998.

                  b. Incentive Plan. The Company will establish and implement an
incentive  compensation system which will provide additional  incentive payments
to Employee according to the following schedule: Employee shall be paid $10,000,
$15,000 and $20,000 if the Company  achieves  sales targets to be agreed upon by
the Company and Employee by separate letter agreement.

         These bonus payments shall be payable,  if applicable,  the earlier of:
(1) ninety  (90) days after the end of the  respective  fiscal year in which the
sales  goal was  achieved;  (2) the  release  of the  Company's  annual  audited
financial statements from that same year.

         4.  Fringe  Benefits.  In  addition  to the  options  for shares of the
Company's  Common  Stock  available  to  Employee  under the same terms as those
available to Company  employees,  and any other employee benefit plans generally
available to Company  employees,  the Company  shall include the Employee in any
group medical  insurance plan  maintained for the employees of the Company.  The
manner  of  implementation  of such  benefits  with  respect  to such  items  as
procedures  and  amounts  is  discretionary   with  the  Company  but  shall  be
commensurate with Employee's executive status and shall include medical coverage
for Employee and Employee's family members who are eligible under the applicable
plans.

         5. Vacation. Employee shall be entitled to vacation with pay in keeping
with Employee's previously established vacation practices. In addition, Employee
shall be entitled to such  holidays as the Company may approve for its executive
personnel.

         6. Expense Reimbursement.  In addition to the compensation and benefits
provided  above,  the  Company  shall pay all  reasonable  expenses  of Employee
incurred  in  connection   with  the   performance  of  Employee's   duties  and
responsibilities  to the Company pursuant to this Agreement,  upon submission of
appropriate  vouchers  and  supporting  documentation  in  accordance  with  the
Company's  usual  and  ordinary  practices,  provided  that  such  expenses  are
reasonable and necessary business expenses of the Company. The Company shall pay
Employee's  reasonable  cellular  telephone expenses that are related to Company
business.

         7. Termination.  The Company may terminate Employee's  employment prior
to the expiration of this Agreement, in the manner provided below:

                  a. For Cause. The Company may terminate Employee's  employment
by the  Company  prior to the  expiration  of this  Agreement,  for cause,  upon
written  notice to the  Employee  stating  the facts  constituting  such  cause,
provided  that  Employee  shall have 20 days  following  such notice to cure any
conduct or act, if curable, alleged to provide grounds for termination for cause
hereunder. In the event of termination for cause, the Company shall be
                                      - 2 -
<PAGE>
obligated to pay the  Employee  only the base salary due him through the date of
termination.  Cause shall include  willful  failure to abide by  instructions or
policies  from  or  set  by the  Company,  commission  of a  felony  or  serious
misdemeanor  offense or pleading guilty or nolo  contendere to same,  Employee's
material breach of this  Agreement,  or breach by Employee of any other material
obligation to the Company.

                  b. Without  Cause.  The Chairman or the Company may  terminate
Employee's employment by the Company at any time immediately,  without cause, by
giving  written  notice to the Employee.  If the Company  terminates  under this
Section 7.b  it shall pay to Employee a lump-sum  amount equal to 12 months base
salary, less applicable withholdings and shall continue coverage of Employee and
Employee's  dependents  under its medical plans for 12 months or until  Employee
secures other  employment  (unless  continuation of coverage under such plans is
unfeasible,  in which  event the  Company  will  provide  substantially  similar
benefits).

                  c. Disability. If during the term of this Agreement,  Employee
experiences  a  permanent  disability  (as  defined in Section  22(e)(3)  of the
Internal Revenue Code of 1986, as amended),  the Company shall have the right to
terminate this Agreement  without further  obligation  hereunder  except for any
bonus  amount  payable in  accordance  with the next  sentence  and any  amounts
payable  pursuant  to  disability   plans  generally   applicable  to  executive
employees.  Within 90 days after the end of the fiscal year in which termination
pursuant to this Section 7.c occurs,  so long as Employee is in full  compliance
with  this  Agreement,  Employee  shall be  entitled  to  receive  an  incentive
compensation  payment  (calculated  and  payable  in the manner  referred  to in
Section 2.b,  if any, based upon the Company's  financial  performance  for such
fiscal  year,  which shall be prorated to the extent that  Employees  employment
during such fiscal year was for a period of less than the full year.

                  d.  Death.  If the  Employee  dies  during  the  term  of this
Agreement, this Agreement shall terminate immediately,  and the Employee's legal
representative  shall be  entitled  to receive  the base  salary due to Employee
through  the 60th day from the date on which his death shall have  occurred  and
any other  death  benefits  generally  applicable  to  executive  employees.  In
addition,  Employee's  death occurs,  Employee's legal  representative  shall be
entitled to receive,  at the end of the first quarter of the year  following the
fiscal year in which such death shall have occurred,  an incentive  compensation
payment  (calculated  and payable in the manner referred to in Section 2.b),  if
any, based upon the Company's financial  performance for such fiscal year, which
shall be prorated to the extent that  Employee's  employment  during such fiscal
year was for a period of less than the full year.

         8. Change in Control.

                  a. Severance Benefits.  Notwithstanding  Section 7.b,  if your
employment  with the  Company  terminates  within  12  months  after a Change in
Control  (as  defined  in  Section  8.b  below),  you shall be  entitled  to the
severance benefits provided in Section 8.d unless (i) such
                                      - 3 -
<PAGE>
termination  is in accordance  with Section 7.a, 7.c or 7.d above;  or (ii) such
termination  is by you for other  than Good  Reason (as  defined in Section  8.c
below).

                  b. "Change in Control" shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the stockholders of
the Company in substantially the same proportions as their ownership of stock of
the  Company,  is or becomes  the  "beneficial  owner" (as defined in Rule 13d-3
under  said  Act),  directly  or  indirectly,   of  securities  of  the  Company
representing  one-third  or more of the total voting  power  represented  by the
Company's  then  outstanding  Common  Stock,  or (ii)  during  any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation,  other than a merger or  consolidation  which  would  result in the
Common Stock of the Company outstanding  immediately prior thereto continuing to
represent  (either by remaining  outstanding  or by being  converted into Common
Stock of the  surviving  entity) at least  two-thirds  of the total voting power
represented  by the  Common  Stock  of the  Company  or  such  surviving  entity
outstanding immediately after such merger or consolidation,  or the stockholders
of the  Company  approve a plan of  complete  liquidation  of the  Company or an
agreement for the sale or disposition by the Company of (in one transaction or a
series of transactions) all or substantially all the Company's assets.

                  c. "Good Reason" shall mean,  for purposes of this  Agreement,
(i) without  your  express  written  consent,  the  assignment  to you of duties
inconsistent with your positions,  duties,  responsibilities and status with the
Company immediately prior to the Change in Control, or a demotion or a change in
titles or offices as in effect  immediately prior to a Change in Control (except
in connection  with  termination of your  employment in compliance  with Section
7.1, 7.c or 7.d above);  or (ii) a material  breach by the Company of any of its
obligations  hereunder  which (if curable) is not cured by the Company within 20
days after written notice thereof.

                  d. Amount of Benefit. If the Employee is entitled to severance
benefits  under  Section  8.a,  the  amount of such  benefit  shall  equal (i) a
lump-sum  payment  not to exceed  2.99 times the "Base  Amount" (as such term is
defined in Section 280G of the  Internal  Revenue  Code of 1986)  applicable  to
Employee,  whether or not the provisions of Section 280G actually applies to the
payment;  (ii) a continuation of medical coverage in the manner  contemplated in
Section  7.b above;  and (iii)  such other  benefits  to which the  Employee  is
entitled under the Company's
                                      - 4 -
<PAGE>
benefits  plans and  policies  as in effect  immediately  prior to the Change in
Control with respect to terminated Employees.

         9. Confidentiality. Employee acknowledges that Employee may receive, or
contribute to the production  of,  confidential,  proprietary,  and trade secret
information  of the  Company,  and  others  with whom the  Company  may be doing
business.  For purposes of this Agreement,  Employee  agrees that  "Confidential
Information"  shall mean  information or material  proprietary to the Company or
designated as Confidential Information by the Company and not generally known by
non-Company  personnel,  which Employee develops or to which Employee may obtain
knowledge  or access  through  or as a result of  Employee's  relationship  with
Company (including information conceived,  originated,  discovered, or developed
in whole or in part by Employee).  Confidential Information includes, but is not
limited  to, the  following  types of  information  and other  information  of a
similar  nature  (whether or not reduced to writing):  discoveries,  inventions,
ideas,  concepts,  research,  development,  processes,  procedures,  "know-how",
formulae,  marketing techniques and materials,  marketing and development plans,
business plans, customer names and other information related to customers, price
lists,  pricing policies,  financial  information,  employee  compensation,  and
computer  programs  and  systems.  Confidential  Information  also  includes any
information  described  above which the Company  obtains from another  party and
which  the  Company  treats  as   proprietary  or  designates  as   Confidential
Information,  whether  or not owned by or  developed  by the  Company.  Employee
acknowledges  that the Confidential  Information  derives  independent  economic
value,  actual or potential,  from not being  generally  known to, and not being
readily  ascertainable by proper means by, other persons who can obtain economic
value from its disclosure or use.

         Information  publicly  known without  breach of this  Agreement that is
generally  employed by the trade at or after the time  Employee  first learns of
such information,  or generic information or knowledge which Employee would have
learned in the  course of similar  employment  or work  elsewhere  in the trade,
shall not be deemed part of the Confidential Information.

         Employee further agrees:

                  a. To furnish  Company on demand,  at any time during or after
employment,  a complete list of the names and addresses of all present,  former,
and  potential  customers  and other  contacts  gained  while an employee of the
Company,  whether  or not in the  possession  or  within  the  knowledge  of the
Company.

                  b.  That  all  notes,  computer  or  disk  memory,  memoranda,
documentation,   and  records  in  any  way   incorporating  or  reflecting  any
Confidential  Information shall belong exclusively to the Company,  and Employee
agrees to turn over all  copies  of such  materials  in  Employee's  control  to
Company upon request or upon termination of Employee's employment
                                      - 5 -
<PAGE>
with the Company,  regardless of whether the materials  were prepared by or with
the assistance of Employee.

                  c. That while employed by the Company and thereafter  Employee
will hold in confidence and not directly or indirectly reveal, report,  publish,
disclose,  or  transfer  any of the  Confidential  Information  to any person or
entity, or utilize any of the Confidential  Information for any purpose,  except
in the course of Employee's work for the Company.

                  d. That any ideas in whole or in part  conceived of or made by
Employee  during the term of his  employment  or  relationship  with the Company
which are made  through the use of any of the  Confidential  Information  of the
Company or any of the Company's equipment,  facilities,  trade secrets, or time,
or which  result from any work  performed  by Employee  for the  Company,  shall
belong exclusively to the Company and shall be deemed a part of the Confidential
Information for purposes of this  Agreement.  Employee hereby assigns and agrees
to assign to the  Company  all  rights in and to such  Confidential  Information
whether for purposes of obtaining  patent or copyright  protection or otherwise.
Employee shall acknowledge and deliver to the Company, without charge to Company
(but at its expense) such written instruments and do such other acts,  including
giving  testimony in support of Employee's  authorship or  inventorship,  as the
case may be,  necessary  in the  opinion  of the  Company  to obtain  patents or
copyrights  or to otherwise  protect or vest in the Company the entire right and
title in and to the Confidential Information.

         10. Non-Competition.

                  a.  Non-Competition  During  Employment Term.  Employee agrees
that during the term of  Employee's  employment  by the Company,  Employee  will
devote all of Employee's  business time and effort to and give undivided loyalty
to the  Company,  and  will  not  engage  in any  way  whatsoever,  directly  or
indirectly,  in any  business  that  is  competitive  with  the  Company  or its
affiliates,  nor solicit, or in any other manner work for or assist any business
which is  competitive  with the  Company or its  affiliates.  During the term of
Employee's employment by the Company, Employee will undertake no planning for or
organization  of any  business  activity  competitive  with the  Company  or its
affiliates, and Employee will not combine or conspire with any other employee of
the  Company  or any  other  person  for the  purpose  of  organizing  any  such
competitive business activity.

                  b.   Non-Competition   After   Employment  Term.  The  parties
acknowledge that Employee will acquire much knowledge and information concerning
the  business  of the  Company and its  affiliates  as the result of  Employee's
employment.  The parties further acknowledge that the scope of business in which
Company is engaged as of the date of execution of this  Agreement is  world-wide
and very  competitive and one in which few companies can  successfully  compete.
Competition  by Employee in that  business  after this  Agreement is  terminated
would severely injure Company. Accordingly, until one (1) year, or a reasonable
                                      - 6 -
<PAGE>
term  determined  by state law,  after this  Agreement is terminated or Employee
leaves the employment of Company for any reason whatsoever, Employee will not:

                  (1)      Within any  jurisdiction  or marketing  area in which
                           Company or any of its affiliates is doing business or
                           is qualified to do business,  directly or  indirectly
                           manage,  operate,  join,  control,  or participate or
                           become  interested  in or  be  connected  with  as an
                           employee,  partner, officer,  director,  stockholder,
                           consultant,    or    investor,    any    corporation,
                           partnership,  or other business entity other than the
                           Company  or its  affiliates,  which  shall  operate a
                           business in competition  with the business  conducted
                           by the  Company  or its  affiliates.  Nothing  herein
                           shall  prohibit  Employee  from  owning,  solely  for
                           investment  purposes,  publicly-traded  securities of
                           any  company  which  operates  a  business  otherwise
                           covered by this Section, provided that such ownership
                           constitutes   less   than  1%  of  the   issued   and
                           outstanding  equity or debt  securities,  as the case
                           may be, of said company.

                  (2)      Persuade  or  attempt  to  persuade   any   potential
                           customer  or  client to which  Company  or any of its
                           affiliates has made a proposal or sale, or with which
                           Company  or any of its  affiliates  has  been  having
                           discussions, not to transact business with Company or
                           such affiliate,  or instead to transact business with
                           another person or organization;

                  (3)      Solicit  the  business  of  any  company  which  is a
                           customer  or  client  of  the  Company  or any of its
                           affiliates at any time during  Employee's  employment
                           by the Company,  or was its customer or client within
                           3  years  prior  to  the  date  of  this   Agreement,
                           provided, however, if Employee becomes employed by or
                           represents a business that exclusively sells products
                           that do not compete with  products  then  marketed or
                           intended to be marketed by the Company,  such contact
                           shall be permissible; or

                  (4)      Solicit,  endeavor to entice away from the Company or
                           any of its  affiliates,  or otherwise  interfere with
                           the  relationship  of  the  Company  or  any  of  its
                           affiliates  with,  any person who is  employed  by or
                           otherwise engaged to perform services for the Company
                           or any  of its  affiliates,  whether  for  Employee's
                           account  or for the  account  of any other  person or
                           organization.

                  c. Modification.  The covenants set forth in Sections 9 and 10
shall be construed  as  independent  of any other  covenant or provision of this
Agreement  or any other  agreement.  The  Company  may  reduce  the scope of the
obligations under the covenant
                                      - 7 -
<PAGE>
unilaterally  and without consent of any other person or entity,  effective upon
giving notice thereof.

                  d. Time and Territory Reduction.  If the period of time and/or
territory  described  above  are  held  to be in  any  respect  an  unreasonable
restriction,  it is agreed that the court so holding may reduce the territory to
which the restriction pertains or the period of time in which it operates or may
reduce both such territory and such period,  to the minimum extent  necessary to
render such provision enforceable.

                  e. Survival.  The  obligations  described in Sections 9 and 10
shall survive any termination of this Employment Agreement or any termination of
the employment relationship created hereunder.

         11. Return of the Company's  Materials.  Upon the  termination  of this
Agreement,  Employee  shall  promptly  return to the Company  all files,  credit
cards, keys,  instruments,  equipment,  and other materials owned or provided by
the Company.

         12. Insurance. The Company shall use commercially reasonable efforts to
carry director's and officer's  professional  liability  insurance  coverage for
Employee while in the performance of Employee's duties hereunder.

         13. Remedies.  In addition to other remedies provided by law or equity,
upon a breach by Employee of any of the covenants  contained herein, the Company
shall be entitled to have a court of competent  jurisdiction enter an injunction
against  Employees  prohibiting  any further  breach of the covenants  contained
herein.  The parties  further agree that the services to be performed  hereunder
are of a unique,  special,  and  extraordinary  character and that any breach or
threatened  breach  by  Employee  of any  provision  of  Section 9 or 10 of this
Agreement  shall cause the  Company  irreparable  harm which  cannot be remedied
solely by damages.  Therefore,  in the event of any  controversy  concerning the
rights or obligations under this Agreement,  such rights or obligations shall be
enforceable in a court of competent jurisdiction at law or equity by a decree of
specific  performance  or, if the Company elects,  by obtaining  damages or such
other relief as the Company may elect to pursue. Such remedies,  however,  shall
be cumulative  and  nonexclusive  and shall be in addition to any other remedies
which the Company may have.  The parties agree that in the event of  litigation,
venue shall lie exclusively in Maricopa County, Arizona.

         14.  Common Law of Torts or Trade  Secrets.  Nothing in this  Agreement
shall be construed  to limit or negate the common law of torts or trade  secrets
where  such  common  law  provides  Company  with  broader  protection  than the
protection provided by this Agreement.

         15. Nondelegability of Employee's Rights and Company Assignment Rights.
The obligations, rights, and benefits of Employee hereunder are personal and may
not be delegated,
                                      - 8 -
<PAGE>
assigned,  or transferred in any manner  whatsoever,  nor are such  obligations,
rights, or benefits subject to involuntary alienation,  assignment, or transfer.
The Company may transfer its obligations hereunder to a subsidiary, affiliate or
successor.

         16. Notices. All notices,  demands, and communications required by this
Agreement  shall be in  writing  and shall be deemed to have been  given for all
purposes  when  sent to the  respective  addresses  set  forth  below,  (i) upon
personal delivery, (ii) one day after being sent, when sent by overnight courier
service to and from locations within the continental United States,  (iii) three
days after posting when sent by registered,  certified, or regular United States
mail, with postage prepaid and return receipt requested,  or (iv) on the date of
transmission when sent by confirmed facsimile.

                  If to the Company:           M.D. Labs, Inc.
                                               1719 W. University Drive
                                               Suite 187
                                               Tempe, Arizona 85281
                                               Attn: Hooman Nikzad
                                                     Chief Executive Officer

                            Copy to:           Quarles & Brady
                                               One E. Camelback Road
                                               Suite 400
                                               Phoenix, Arizona 85012
                                               Attn: Paul M. Gales, Esq.

                     If to Employee:           Bradley A. Denton
                                               11625 E. Carol Avenue
                                               Scottsdale, Arizona  85259
                                               Phone: 602-661-4726
                                               Facsimile:    N/A


(Or when sent to such other address as any party shall specify by written notice
so given.)

         17. Entire  Agreement.  This  Agreement  constitutes  the final written
expression of all of the agreements  between the parties,  and is a complete and
exclusive  statement  of those  terms.  It  supersedes  all  understandings  and
negotiations  concerning  the matters  specified  herein.  Any  representations,
promises,  warranties, or statements made by either party that differ in any way
from the terms of this written Agreement shall be given no force or effect.  The
parties specifically represent,  each to the other, that there are no additional
or supplemental agreements between them related in any way to the matters herein
contained unless specifically included or
                                      - 9 -
<PAGE>
referred to herein.  No addition to or  modification  of any  provision  of this
Agreement  shall be binding  upon any party unless made in writing and signed by
all parties.

         18. Waiver. The waiver by either party of the breach of any covenant or
provision in this Agreement shall not operate or be construed as a waiver of any
subsequent breach by either party.

         19.  Invalidity of Any Provision.  The provisions of this Agreement are
severable,  it being  the  intention  of the  parties  hereto  that  should  any
provisions   hereof  be   invalid   or   unenforceable,   such   invalidity   or
unenforceability  of any  provision  shall not affect the  remaining  provisions
hereof, but the same shall remain in full force and effect as if such invalid or
unenforceable provisions were omitted.

         20.  Applicable  Law. This Agreement shall be governed by and construed
in accordance  with the internal  laws of the State of Arizona  exclusive of the
conflict of law provisions thereof.

         21.  Attorneys' Fees. If any party reasonably  employs legal counsel to
bring an action at law or other  proceedings  against the other party to enforce
any of the  terms  hereof,  the  party  prevailing  in any such  action or other
proceeding  shall be paid by the other party its reasonable  attorneys'  fees as
well as court costs, all as determined by the court and not a jury.

         22.  Headings;  Construction.   Headings  in  this  Agreement  are  for
informational purposes only and shall not be used to construe the intent of this
Agreement.  The language in all parts of this Employment  Agreement shall in all
cases be construed as a whole according to its fair meaning and not strictly for
nor against any party.

         23. Counterparts;  Facsimile Signatures. This Agreement may be executed
simultaneously  in any number of counterparts,  each of which shall be deemed an
original but all of which together shall  constitute one and the same agreement.
Delivery  by any party of a  facsimile  signature  to the other  parties to this
Agreement  shall  constitute  effective  delivery  by said party of an  original
counterpart signature to this Agreement.

         24. Binding Effect;  Benefits. This Agreement shall be binding upon and
shall  inure to the benefit of the parties  hereto and their  respective  heirs,
successors,  executors,  administrators,  and assigns.  Notwithstanding anything
contained  in  this  Agreement  to the  contrary,  nothing  in  this  Agreement,
expressed or implied, is intended to confer on any person other than the parties
hereto or their respective heirs,  successors,  executors,  administrators,  and
assigns any rights, remedies,  obligations, or liabilities under or by reason of
this Agreement.
                                     - 10 -
<PAGE>
         25.  Binding  Effect on  Marital  Community.  Employee  represents  and
warrants to the Company that he has the power to bind his marital  community (if
any) to all terms and provisions of this agreement by his execution hereof.

         IN  WITNESS  WHEREOF,  each of the  parties  hereto has  executed  this
Employment  Agreement and caused the same to be duly  delivered on its behalf as
of June 1, 1996.

                                   M.D. LABS, INC.,
                                   a Delaware corporation   



                                   By_________________________________________
                                       Hooman Nikzad, Chief Executive Officer

                                                                       "COMPANY"





                                   ___________________________________________
                                       BRADLEY A. DENTON

                                                                      "EMPLOYEE"
                                     - 11 -

THESE  SECURITIES HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY  STATE  OR OTHER
JURISDICTION  ("BLUE SKY LAWS"), AND CANNOT BE RESOLD UNLESS THEY ARE REGISTERED
UNDER  THE ACT AND  ANY  APPLICABLE  BLUE  SKY  LAWS,  UNLESS  AN  EXEMPTION  IS
AVAILABLE.  THE  SECURITIES  REPRESENTED  BY THIS WARRANT HAVE BEEN ACQUIRED FOR
INVESTMENT  AND  NOT  WITH A  VIEW  TO,  OR IN  CONNECTION  WITH,  THE  SALE  OR
DISTRIBUTION THEREOF.

                                 M.D. LABS, INC.

                             STOCK PURCHASE WARRANT

                      WARRANT TO PURCHASE 10,500 SHARES OF
                        COMMON STOCK AS DESCRIBED HEREIN


Dated: February 7, 1996

                    This certifies that, for value received:

                  Name:             Hooman Nikzad

                  Address:          1719 West University Drive
                                    Suite 187
                                    Tempe, Arizona 85281


is  entitled to purchase  from M.D.  Labs,  Inc.,  a Delaware  corporation  (the
"Company"),  having its principal  office at 1719 W.  University Dr., Suite 187,
Tempe,  Arizona  85281,  Ten  Thousand  Five  Hundred  (10,500)  fully  paid and
nonassessable  shares of Common  Stock,  par value  $.001,  of the Company  (the
"Common Stock"),  subject to the terms set forth herein, at an exercise price of
One Dollar ($1.00) per share, subject to adjustment as provided elsewhere herein
(the "Warrant Price"). The holder of this Warrant shall be referred to herein as
the  "Warrantholder" or the "Holder." This Warrant is issued pursuant to a stock
purchase  agreement by and between  Belnik  Investment  Group,  Inc., an Arizona
corporation, doing business as Freedom Wholesalers ("Freedom") and Company.

         1. "Common  Stock." If at any time, as a result of an  adjustment  made
pursuant to Section , the securities or other property  obtainable upon exercise
of this Warrant  shall include  shares or other  securities of the Company other
than  common  stock or  securities  of another  corporation  or other  property,
thereafter  the number of such other shares or other  securities  or property so
obtainable  shall be subject to adjustment  from time to time in a manner and on
terms as nearly  equivalent as practicable to the provisions with respect to the
Common  Stock  contained in Section , and all other  provisions  of this Warrant
with  respect to the Common  Stock  shall  apply on like terms to any such other
shares or other securities or property. Subject to the foregoing, and unless the
context requires otherwise, all references herein to "Common Stock"
<PAGE>
shall, in the event of an adjustment pursuant to Section , be deemed to refer as
well to any other  securities  or property  then  obtainable as a result of such
adjustments.

         2. Exercise of Warrant. The purchase rights represented by this Warrant
may be  exercised  by the  Warrantholder  or its  duly  authorized  attorney  or
representative,  in whole or in part (but not as to a fractional share of Common
Stock),  at any time and from time to time during the period  commencing on June
3, 1996 (the "Commencement  Date") and expiring at 5:00 p.m.,  Mountain Standard
Time,  June 2, 2001  (the  "Expiration  Date")(or  such  earlier  date as may be
provided  pursuant  to  Section  9  herein),  or if such  date is a day on which
federal or state chartered banking  institutions are authorized by law to close,
then on the next succeeding day which shall not be such a day, upon presentation
of this Warrant at the principal office of the Company,  or at the office of its
stock  transfer  agent,  if any,  with the purchase  form  attached  hereto duly
completed  and signed,  and upon  payment to the Company in cash or by certified
check or bank  draft  of an  amount  equal  to the  number  of  shares  being so
purchased  multiplied by the Warrant Price,  together with all taxes  applicable
upon such exercise. The Company agrees that the Warrantholder will be deemed the
record owner of such shares as of the close of business on the date on which the
Warrant  shall have been  presented  and  payment  shall have been made for such
shares as  aforesaid.  Certificates  for the shares of Common Stock so purchased
shall be delivered to the Warrantholder  within a reasonable time, not exceeding
20 days, after the exercise in full of the rights represented by this Warrant.

         If the  Warrant is  exercised  in part only,  the Company  shall,  upon
surrender of this Warrant for cancellation, deliver a new Warrant evidencing the
rights of the  Warrantholder  to  purchase  the  balance of the shares of Common
Stock which the Warrantholder is entitled to purchase hereunder.

         3. Vesting  Schedule.  The purchase rights  represented by this Warrant
shall become exercisable according to the following schedule:  3,500 shares upon
each of December 31, 1996, 1997 and 1998, respectively.

         4. Certain Adjustments to Warrant.

                  (a) In case the Company  shall (i) pay a dividend in shares of
Common Stock or make a  distribution  in shares of Common Stock,  (ii) subdivide
its outstanding  shares of Common Stock, (iii) combine its outstanding shares of
Common  Stock into a smaller  number of shares of Common  Stock or (iv) issue by
reclassification  of its shares of Common Stock other securities of the Company,
the number of shares of Common Stock  purchasable  upon exercise of this Warrant
immediately prior thereto shall be adjusted so that the  Warrantholder  shall be
entitled  to  receive  the kind and  number of  shares of Common  Stock or other
securities  of the  Company  which he would have owned or have been  entitled to
receive at the happening of any of the events  described above, had such Warrant
been  exercised  immediately  prior to the happening of such event or any record
date with respect  thereto.  An adjustment  made pursuant to this  paragraph (a)
shall  become  effective  immediately  after the  effective  date of such  event
retroactive to the record date, if any, for such event.

                  (b) Whenever the number of shares of Common Stock  purchasable
upon the exercise of this Warrant is adjusted,  as herein provided,  the Warrant
Price shall be adjusted by
                                        2
<PAGE>
multiplying  such  Warrant  Price  immediately  prior  to such  adjustment  by a
fraction,  of which the numerator  shall be the number of shares of Common Stock
purchasable  upon  the  exercise  of  this  Warrant  immediately  prior  to such
adjustment, and of which the denominator shall be the number of shares of Common
Stock so purchasable immediately thereafter.

                  (c) In the event of any adjustment  pursuant to this Section ,
no  fractional  shares of Common  Stock shall be issued in  connection  with the
exercise of any  Warrants,  but the Company  shall,  in lieu of such  fractional
shares, make such cash payment therefor on the basis of the current market price
on the day immediately prior to exercise.

                  (d)  Irrespective of any adjustments  pursuant to this Section
to the Warrant Price or to the number of shares or other  securities  obtainable
upon  exercise of this  Warrant,  this Warrant may continue to state the Warrant
Price and the number of shares  obtainable upon exercise,  as the same price and
number of shares stated herein.

         5. Covenants of the Company. The Company covenants and agrees that:

                  (a) During the period within which the rights  represented  by
the Warrant may be  exercised,  the Company  will at all times  reserve and keep
available,  free from  preemptive  rights out of the aggregate of its authorized
but  unissued  Common  Stock,  for the  purpose of  enabling  it to satisfy  any
obligation  to issue shares of Common  Stock upon the exercise of this  Warrant,
the  number of shares of Common  Stock  deliverable  upon the  exercise  of this
Warrant.  If at any time the number of shares of  authorized  Common Stock shall
not be sufficient to effect the exercise of this Warrant,  the Company will take
such  corporate  action as may be  necessary  to  increase  its  authorized  but
unissued  Common Stock to such number of shares as shall be sufficient  for such
purpose. The Company shall have analogous  obligations with respect to any other
securities or properties  issuable upon exercise of this Warrant.  The Company's
issuance of this Warrant shall constitute full authority to its officers who are
charged with the duty of executing  stock  certificates to execute and issue the
necessary  certificates  for shares of Common  Stock upon the  exercise  of this
Warrant;

                  (b) All Common  Stock that may be issued upon  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid, nonassessable, and free from all taxes, liens, and charges with respect to
the issue thereof; and

                  (c) All  original  issue  taxes  payable  with  respect to the
issuance of shares upon the exercise of the rights  represented  by this Warrant
will be borne by the Company but in no event will the Company be  responsible or
liable for income taxes or transfer taxes upon the transfer of any Warrant.

         6. No  Stockholder  Rights.  Until  exercised,  this Warrant  shall not
entitle the  Warrantholder to any voting rights or other rights as a stockholder
of the Company.  The rights of the Holder are limited to those expressed in this
Warrant and are not  enforceable  against  the Company  except to the extent set
forth herein.
                                        3
<PAGE>
         7. Transfer Restrictions.

                  (a) This  Warrant  is not  transferable  except by will or the
laws of descent and distribution and, during Holder's  lifetime,  it may only be
exercised by Holder.

                  (b) Neither this Warrant nor the shares of stock issuable upon
the exercise  hereof have been  registered  under the Securities Act of 1933, as
amended (the "Securities  Act") or under any state securities laws and unless so
registered may not be  transferred,  sold,  pledged,  hypothecated  or otherwise
disposed of unless an exemption  from such  registration  is  available.  In the
event Holder  desires to transfer  any of the shares of stock issued  hereunder,
the Holder must give the Company prior written notice of such proposed  transfer
including the name and address of the proposed transferee.  Such transfer may be
made only either (i) upon publication by the Securities and Exchange  Commission
(the  "Commission") of a ruling,  interpretation,  opinion or "no action letter"
based upon  facts  presented  to said  Commission,  or (ii) upon  receipt by the
Company of an opinion  of  counsel to the  Company in either  case to the effect
that the proposed  transfer will not violate the  provisions  of the  Securities
Act,  the  Securities  Exchange  Act of  1934,  as  amended,  or the  rules  and
regulations  promulgated  under  either  such act, or in the case of clause (ii)
above,  to the effect  that the shares of stock to be sold or  transferred  have
been  registered  under the Securities Act and that there is in effect a current
prospectus  meeting the  requirements of Subsection 10(a) of the Securities Act,
which is being or will be delivered to the  purchaser or  transferee at or prior
to the time of delivery of the certificates evidencing the shares of stock to be
sold or transferred.

                  (c) Prior to any such  proposed  transfer,  and as a condition
thereto,  if such  transfer is not made  pursuant to an  effective  registration
statement  under the  Securities  Act,  the Holder  will,  if  requested  by the
Company,  deliver  to the  Company  (i) an  investment  covenant  signed  by the
proposed  transferee,  (ii) an agreement by such transferee to the impression of
the  restrictive  investment  legend  set  forth  herein on the  certificate  or
certificates  representing the securities acquired by such transferee,  (iii) an
agreement by such  transferee that the Company may place a "stop transfer order"
with its transfer agent or registrar, and (iv) an agreement by the transferee to
indemnify the Company to the same extent as set forth in paragraph 8(d) below.

                  (d) Holder  acknowledges  that Holder  understands the meaning
and legal  consequences  of this  Section  8, and the  Holder  hereby  agrees to
indemnify and hold harmless the Company,  its  representatives  and each officer
and  director  thereof  from and against any and all loss,  damage or  liability
(including  all  attorneys'  fees and costs incurred in enforcing this indemnity
provision) due to or arising out of (i) the inaccuracy of any  representation or
the breach of any warranty of Holder  contained in, or any other breach of, this
Warrant  Agreement,  (ii) any  transfer of any of this  Warrant or the shares of
stock  issuable  hereunder in violation of the  Securities  Act, the  Securities
Exchange Act of 1934, as amended, or the rules and regulations promulgated under
either of such acts, (iii) any transfer of this Warrant or any of said shares of
stock not in accordance with this Warrant Agreement or (iv) any untrue statement
or  omission  to state  any  material  fact in  connection  with the  investment
representations or with respect to the facts and representations supplied by the
Holder to  counsel  to the  Company  upon  which its  opinion  as to a  proposed
transfer shall have been based.
                                        4
<PAGE>
                  (e) Any assignment,  transfer, pledge,  hypothecation or other
disposition of this Warrant attempted contrary to the provisions of this Warrant
Agreement, or any levy of execution,  attachment or other process attempted upon
the Warrant, shall be null and void and without effect.

                  (f) Unless the shares of stock  issuable  hereunder  have been
registered  under the Securities Act, upon exercise of this Warrant (in whole or
in part) and the issuance of any of said shares,  the Company shall instruct its
transfer  agent to enter stop transfer  orders with respect to such shares,  and
all  certificates  representing  said  shares  shall  bear on the  face  thereof
substantially the following legend, insofar as is consistent with Arizona law:

                  "The shares of common stock  represented  by this  certificate
                  have not been registered  under the Securities Act of 1933, as
                  amended,  and may not be sold,  offered  for  sale,  assigned,
                  transferred  or  otherwise   disposed  of  unless   registered
                  pursuant  to the  provisions  of  that  Act or an  opinion  of
                  counsel  to  the  Company  is  obtained   stating   that  such
                  disposition is in compliance with an available  exemption from
                  such registration."

         8. Lost  Certificate.  If this  Warrant is lost,  stolen,  mutilated or
destroyed,  the  Company  shall,  on such terms as the  Company  may  reasonably
impose,  including a requirement that the  Warrantholder  obtain a bond, issue a
new Warrant of like denomination, tenor and date.

         9. Binding  Effect.  This Warrant  shall inure to the benefit of and be
binding upon the Warrantholder,  the Company and their respective successors and
permitted assigns.

         10. Company's  Notice of Certain Events.  So long as this Warrant shall
be outstanding and unexercised (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization of the Company, reclassification of the Company, reclassification
of the capital stock of the Company, consolidation or merger of the Company with
or into another  corporation,  sale, lease or transfer of shall or substantially
all of the  property  and  assets of the  Company  to  another  corporation,  or
voluntary or involuntary dissolution, the Company shall cause to be delivered to
the Holder,  at least ten days prior to the date  specified in (a) or (b) below,
as the case may be, a notice  containing  a brief  description  of the  proposed
action and stating the date on which (a) a record is to be taken for the purpose
of  such  dividend,  distribution  or  rights,  or  (b)  such  reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.

         11. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by overnight  express  courtier or mailed,  postage
prepaid, to the Holder at the address set forth
                                        5
<PAGE>
above,  or such other address as Holder shall have  designated by written notice
to the  Company  as  provided  herein.  Notices or other  communications  to the
Company shall be deemed to have been sufficiently given if delivered by hand, by
facsimile  transmission,  or by  overnight  express  courier or mailed,  postage
prepaid,  to the company at 1719 W. University  Dr., Suite 187,  Tempe,  Arizona
85281,  or such other  address as the Company  shall have  designated by written
notice  to such  registered  owner as  herein  provided.  All  notices  required
hereunder  shall be in  writing  and shall be  deemed  received  when  delivered
personally,   one  business  day  after  delivery  to  a  nationally  recognized
commercial  overnight  courier service,  or two business days after mailing when
mailed by certified or registered mail to the Company or the Warrantholder.

         12.  Governing Law. The validity,  interpretation,  and  performance of
this  Warrant and of the terms and  provisions  hereof  shall be governed by and
construed in accordance  with the internal laws of the State of Arizona  without
giving effect to the principles of conflicts of laws.

         13. Amendment.  This Warrant may not be modified,  amended,  altered or
supplemented  except upon the  execution  and  delivery  of a written  agreement
executed by the Company and the Warrantholder.

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed effective as of February 7, 1996.


                                            M.D. LABS, INC.


                                            By:_________________________________
                                                     Todd P. Belfer
                                                     President
                                        6
<PAGE>
                                  PURCHASE FORM
                                  -------------

                                 To Be Executed
                            Upon Exercise of Warrant

         The undersigned  hereby  exercises the right to purchase _______ shares
of Common  Stock,  evidenced by the within  Warrant,  according to the terms and
conditions  thereof,  and herewith  makes payment of the purchase price in full.
The undersigned  requests that certificate(s) for such shares shall be issued in
the name set forth below.

Dated:                             [NAME OF HOLDER]


                                   By___________________________________
                                                     (Signature)

                                   Name:_______________________________
                                                     (Please Print)

                                   Address:_____________________________
                                           _____________________________
                                           _____________________________

                                   Employer Identification No., Social Security
                                   No. or other identifying number:

                                   ______________________________________

         If the  number of shares  specified  above  shall not be all the shares
purchasable under the within warrant,  the Warrantholder  hereby requests that a
new Warrant for the unexercised  portion shall be registered in  Warrantholder's
name and delivered to the address set forth in the Warrant.
                                        7

THESE  SECURITIES HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY  STATE  OR OTHER
JURISDICTION  ("BLUE SKY LAWS"), AND CANNOT BE RESOLD UNLESS THEY ARE REGISTERED
UNDER  THE ACT AND  ANY  APPLICABLE  BLUE  SKY  LAWS,  UNLESS  AN  EXEMPTION  IS
AVAILABLE.  THE  SECURITIES  REPRESENTED  BY THIS WARRANT HAVE BEEN ACQUIRED FOR
INVESTMENT  AND  NOT  WITH A  VIEW  TO,  OR IN  CONNECTION  WITH,  THE  SALE  OR
DISTRIBUTION THEREOF.

                                 M.D. LABS, INC.

                             STOCK PURCHASE WARRANT

                      WARRANT TO PURCHASE 10,500 SHARES OF
                        COMMON STOCK AS DESCRIBED HEREIN


Dated: February 7, 1996

                                     This certifies that, for value received:

                  Name:             Todd P. Belfer

                  Address:          6900 East Camelback Road
                                    Suite 440
                                    Scottsdale, Arizona 85251


is  entitled to purchase  from M.D.  Labs,  Inc.,  a Delaware  corporation  (the
"Company"),  having its principal  office at 1719 W.  University Dr., Suite 187,
Tempe,  Arizona  85281,  Ten  Thousand  Five  Hundred  (10,500)  fully  paid and
nonassessable  shares of Common  Stock,  par value  $.001,  of the Company  (the
"Common Stock"),  subject to the terms set forth herein, at an exercise price of
One Dollar ($1.00) per share, subject to adjustment as provided elsewhere herein
(the "Warrant Price"). The holder of this Warrant shall be referred to herein as
the  "Warrantholder" or the "Holder." This Warrant is issued pursuant to a stock
purchase  agreement by and between  Belnik  Investment  Group,  Inc., an Arizona
corporation, doing business as Freedom Wholesalers ("Freedom") and Company.

         1. "Common  Stock." If at any time, as a result of an  adjustment  made
pursuant to Section , the securities or other property  obtainable upon exercise
of this Warrant  shall include  shares or other  securities of the Company other
than  common  stock or  securities  of another  corporation  or other  property,
thereafter  the number of such other shares or other  securities  or property so
obtainable  shall be subject to adjustment  from time to time in a manner and on
terms as nearly  equivalent as practicable to the provisions with respect to the
Common  Stock  contained in Section , and all other  provisions  of this Warrant
with  respect to the Common  Stock  shall  apply on like terms to any such other
shares or other securities or property. Subject to the foregoing, and unless the
context requires otherwise, all references herein to "Common Stock"
<PAGE>
shall, in the event of an adjustment pursuant to Section , be deemed to refer as
well to any other  securities  or property  then  obtainable as a result of such
adjustments.

         2. Exercise of Warrant. The purchase rights represented by this Warrant
may be  exercised  by the  Warrantholder  or its  duly  authorized  attorney  or
representative,  in whole or in part (but not as to a fractional share of Common
Stock),  at any time and from time to time  during the period  described  in the
Vesting  Schedule  below (the  "Commencement  Date") and  expiring at 5:00 p.m.,
Mountain  Standard Time,  June 2, 2001 (the  "Expiration  Date")(or such earlier
date as may be provided pursuant to Section 9 herein),  or if such date is a day
on which federal or state chartered  banking  institutions are authorized by law
to close,  then on the next  succeeding  day which shall not be such a day, upon
presentation of this Warrant at the principal  office of the Company,  or at the
office of its stock  transfer  agent,  if any,  with the purchase  form attached
hereto duly completed and signed,  and upon payment to the Company in cash or by
certified  check or bank draft of an amount  equal to the number of shares being
so purchased multiplied by the Warrant Price, together with all taxes applicable
upon such exercise. The Company agrees that the Warrantholder will be deemed the
record owner of such shares as of the close of business on the date on which the
Warrant  shall have been  presented  and  payment  shall have been made for such
shares as  aforesaid.  Certificates  for the shares of Common Stock so purchased
shall be delivered to the Warrantholder  within a reasonable time, not exceeding
20 days, after the exercise in full of the rights represented by this Warrant.

         If the  Warrant is  exercised  in part only,  the Company  shall,  upon
surrender of this Warrant for cancellation, deliver a new Warrant evidencing the
rights of the  Warrantholder  to  purchase  the  balance of the shares of Common
Stock which the Warrantholder is entitled to purchase hereunder.

         3. Vesting  Schedule.  The purchase rights  represented by this Warrant
shall become exercisable according to the following schedule:  3,500 shares each
on December 31, 1996, 1997 and 1998, respectively.

         4. Certain Adjustments to Warrant.

                  (a) In case the Company  shall (i) pay a dividend in shares of
Common Stock or make a  distribution  in shares of Common Stock,  (ii) subdivide
its outstanding  shares of Common Stock, (iii) combine its outstanding shares of
Common  Stock into a smaller  number of shares of Common  Stock or (iv) issue by
reclassification  of its shares of Common Stock other securities of the Company,
the number of shares of Common Stock  purchasable  upon exercise of this Warrant
immediately prior thereto shall be adjusted so that the  Warrantholder  shall be
entitled  to  receive  the kind and  number of  shares of Common  Stock or other
securities  of the  Company  which he would have owned or have been  entitled to
receive at the happening of any
                                        2
<PAGE>
of the events described above, had such Warrant been exercised immediately prior
to the  happening  of such event or any record  date with  respect  thereto.  An
adjustment   made  pursuant  to  this  paragraph  (a)  shall  become   effective
immediately  after the effective  date of such event  retroactive  to the record
date, if any, for such event.

                  (b) Whenever the number of shares of Common Stock  purchasable
upon the exercise of this Warrant is adjusted,  as herein provided,  the Warrant
Price shall be adjusted by multiplying such Warrant Price  immediately  prior to
such  adjustment by a fraction,  of which the  numerator  shall be the number of
shares of Common Stock purchasable upon the exercise of this Warrant immediately
prior to such  adjustment,  and of which the denominator  shall be the number of
shares of Common Stock so purchasable immediately thereafter.

                  (c) In the event of any adjustment  pursuant to this Section ,
no  fractional  shares of Common  Stock shall be issued in  connection  with the
exercise of any  Warrants,  but the Company  shall,  in lieu of such  fractional
shares, make such cash payment therefor on the basis of the current market price
on the day immediately prior to exercise.

                  (d)  Irrespective of any adjustments  pursuant to this Section
to the Warrant Price or to the number of shares or other  securities  obtainable
upon  exercise of this  Warrant,  this Warrant may continue to state the Warrant
Price and the number of shares  obtainable upon exercise,  as the same price and
number of shares stated herein.

         5. Covenants of the Company. The Company covenants and agrees that:

                  (a) During the period within which the rights  represented  by
the Warrant may be  exercised,  the Company  will at all times  reserve and keep
available,  free from  preemptive  rights out of the aggregate of its authorized
but  unissued  Common  Stock,  for the  purpose of  enabling  it to satisfy  any
obligation  to issue shares of Common  Stock upon the exercise of this  Warrant,
the  number of shares of Common  Stock  deliverable  upon the  exercise  of this
Warrant.  If at any time the number of shares of  authorized  Common Stock shall
not be sufficient to effect the exercise of this Warrant,  the Company will take
such  corporate  action as may be  necessary  to  increase  its  authorized  but
unissued  Common Stock to such number of shares as shall be sufficient  for such
purpose. The Company shall have analogous  obligations with respect to any other
securities or properties  issuable upon exercise of this Warrant.  The Company's
issuance of this Warrant shall constitute full authority to its officers who are
charged with the duty of executing  stock  certificates to execute and issue the
necessary  certificates  for shares of Common  Stock upon the  exercise  of this
Warrant;

                  (b) All Common  Stock that may be issued upon  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid, nonassessable, and free from all taxes, liens, and charges with respect to
the issue thereof; and

                  (c) All  original  issue  taxes  payable  with  respect to the
issuance of shares upon the exercise of the rights  represented  by this Warrant
will be borne by the Company but in no event will the Company be  responsible or
liable for income taxes or transfer taxes upon the transfer of any Warrant.
                                        3
<PAGE>
         6. No  Stockholder  Rights.  Until  exercised,  this Warrant  shall not
entitle the  Warrantholder to any voting rights or other rights as a stockholder
of the Company.  The rights of the Holder are limited to those expressed in this
Warrant and are not  enforceable  against  the Company  except to the extent set
forth herein.

         7. Transfer Restrictions.

                  (a) This  Warrant  is not  transferable  except by will or the
laws of descent and distribution and, during Holder's  lifetime,  it may only be
exercised by Holder.

                  (b) Neither this Warrant nor the shares of stock issuable upon
the exercise  hereof have been  registered  under the Securities Act of 1933, as
amended (the "Securities  Act") or under any state securities laws and unless so
registered may not be  transferred,  sold,  pledged,  hypothecated  or otherwise
disposed of unless an exemption  from such  registration  is  available.  In the
event Holder  desires to transfer  any of the shares of stock issued  hereunder,
the Holder must give the Company prior written notice of such proposed  transfer
including the name and address of the proposed transferee.  Such transfer may be
made only either (i) upon publication by the Securities and Exchange  Commission
(the  "Commission") of a ruling,  interpretation,  opinion or "no action letter"
based upon  facts  presented  to said  Commission,  or (ii) upon  receipt by the
Company of an opinion  of  counsel to the  Company in either  case to the effect
that the proposed  transfer will not violate the  provisions  of the  Securities
Act,  the  Securities  Exchange  Act of  1934,  as  amended,  or the  rules  and
regulations  promulgated  under  either  such act, or in the case of clause (ii)
above,  to the effect  that the shares of stock to be sold or  transferred  have
been  registered  under the Securities Act and that there is in effect a current
prospectus  meeting the  requirements of Subsection 10(a) of the Securities Act,
which is being or will be delivered to the  purchaser or  transferee at or prior
to the time of delivery of the certificates evidencing the shares of stock to be
sold or transferred.

                  (c) Prior to any such  proposed  transfer,  and as a condition
thereto,  if such  transfer is not made  pursuant to an  effective  registration
statement  under the  Securities  Act,  the Holder  will,  if  requested  by the
Company,  deliver  to the  Company  (i) an  investment  covenant  signed  by the
proposed  transferee,  (ii) an agreement by such transferee to the impression of
the  restrictive  investment  legend  set  forth  herein on the  certificate  or
certificates  representing the securities acquired by such transferee,  (iii) an
agreement by such  transferee that the Company may place a "stop transfer order"
with its transfer agent or registrar, and (iv) an agreement by the transferee to
indemnify the Company to the same extent as set forth in paragraph 8(d) below.

                  (d) Holder  acknowledges  that Holder  understands the meaning
and legal  consequences  of this  Section  8, and the  Holder  hereby  agrees to
indemnify and hold harmless the Company,  its  representatives  and each officer
and  director  thereof  from and against any and all loss,  damage or  liability
(including  all  attorneys'  fees and costs incurred in enforcing this indemnity
provision) due to or arising out of (i) the inaccuracy of any  representation or
the breach of any warranty of Holder  contained in, or any other breach of, this
Warrant  Agreement,  (ii) any  transfer of any of this  Warrant or the shares of
stock  issuable  hereunder in violation of the  Securities  Act, the  Securities
Exchange Act of 1934, as amended, or the rules and regulations promulgated under
either of such acts, (iii) any transfer of this Warrant or any of said shares of
stock not in accordance with this Warrant Agreement or (iv) any untrue statement
                                        4
<PAGE>
or  omission  to state  any  material  fact in  connection  with the  investment
representations or with respect to the facts and representations supplied by the
Holder to  counsel  to the  Company  upon  which its  opinion  as to a  proposed
transfer shall have been based.

                  (e) Any assignment,  transfer, pledge,  hypothecation or other
disposition of this Warrant attempted contrary to the provisions of this Warrant
Agreement, or any levy of execution,  attachment or other process attempted upon
the Warrant, shall be null and void and without effect.

                  (f) Unless the shares of stock  issuable  hereunder  have been
registered  under the Securities Act, upon exercise of this Warrant (in whole or
in part) and the issuance of any of said shares,  the Company shall instruct its
transfer  agent to enter stop transfer  orders with respect to such shares,  and
all  certificates  representing  said  shares  shall  bear on the  face  thereof
substantially the following legend, insofar as is consistent with Arizona law:

                  "The shares of common stock  represented  by this  certificate
                  have not been registered  under the Securities Act of 1933, as
                  amended,  and may not be sold,  offered  for  sale,  assigned,
                  transferred  or  otherwise   disposed  of  unless   registered
                  pursuant  to the  provisions  of  that  Act or an  opinion  of
                  counsel  to  the  Company  is  obtained   stating   that  such
                  disposition is in compliance with an available  exemption from
                  such registration."

         8. Lost  Certificate.  If this  Warrant is lost,  stolen,  mutilated or
destroyed,  the  Company  shall,  on such terms as the  Company  may  reasonably
impose,  including a requirement that the  Warrantholder  obtain a bond, issue a
new Warrant of like denomination, tenor and date.

         9. Binding  Effect.  This Warrant  shall inure to the benefit of and be
binding upon the Warrantholder,  the Company and their respective successors and
permitted assigns.

         10. Company's  Notice of Certain Events.  So long as this Warrant shall
be outstanding and unexercised (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization of the Company, reclassification of the Company, reclassification
of the capital stock of the Company, consolidation or merger of the Company with
or into another  corporation,  sale, lease or transfer of shall or substantially
all of the  property  and  assets of the  Company  to  another  corporation,  or
voluntary or involuntary dissolution, the Company shall cause to be delivered to
the Holder,  at least ten days prior to the date  specified in (a) or (b) below,
as the case may be, a notice  containing  a brief  description  of the  proposed
action and stating the date on which (a) a record is to be taken for the purpose
of  such  dividend,  distribution  or  rights,  or  (b)  such  reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.
                                        5
<PAGE>
         11. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by overnight  express  courtier or mailed,  postage
prepaid,  to the Holder at the address set forth above, or such other address as
Holder  shall have  designated  by  written  notice to the  Company as  provided
herein.  Notices or other  communications to the Company shall be deemed to have
been sufficiently given if delivered by hand, by facsimile  transmission,  or by
overnight express courier or mailed,  postage prepaid, to the company at 1719 W.
University  Dr., Suite 187,  Tempe,  Arizona 85281, or such other address as the
Company shall have  designated  by written  notice to such  registered  owner as
herein provided. All notices required hereunder shall be in writing and shall be
deemed received when delivered personally,  one business day after delivery to a
nationally recognized commercial overnight courier service, or two business days
after mailing when mailed by certified or registered  mail to the Company or the
Warrantholder.

         12.  Governing Law. The validity,  interpretation,  and  performance of
this  Warrant and of the terms and  provisions  hereof  shall be governed by and
construed in accordance  with the internal laws of the State of Arizona  without
giving effect to the principles of conflicts of laws.

         13. Amendment.  This Warrant may not be modified,  amended,  altered or
supplemented  except upon the  execution  and  delivery  of a written  agreement
executed by the Company and the Warrantholder.

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed effective as of February 7, 1996.


                                   M.D. LABS, INC.


                                   By:_______________________________________
                                            Hooman Nikzad
                                            Chief Executive Officer
                                        6
<PAGE>
                                  PURCHASE FORM
                                  -------------

                                 To Be Executed
                            Upon Exercise of Warrant

         The undersigned  hereby  exercises the right to purchase _______ shares
of Common  Stock,  evidenced by the within  Warrant,  according to the terms and
conditions  thereof,  and herewith  makes payment of the purchase price in full.
The undersigned  requests that certificate(s) for such shares shall be issued in
the name set forth below.

Dated:                            [NAME OF HOLDER]


                                  By___________________________________
                                             (Signature)

                                  Name:_______________________________
                                             (Please Print)

                                  Address:_____________________________
                                          _____________________________
                                          _____________________________

                                  Employer Identification No., Social Security
                                  No. or other identifying number:

                                  _____________________________________

         If the  number of shares  specified  above  shall not be all the shares
purchasable under the within warrant,  the Warrantholder  hereby requests that a
new Warrant for the unexercised  portion shall be registered in  Warrantholder's
name and delivered to the address set forth in the Warrant.
                                        7

THESE  SECURITIES HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY  STATE  OR OTHER
JURISDICTION  ("BLUE SKY LAWS"), AND CANNOT BE RESOLD UNLESS THEY ARE REGISTERED
UNDER  THE ACT AND  ANY  APPLICABLE  BLUE  SKY  LAWS,  UNLESS  AN  EXEMPTION  IS
AVAILABLE.  THE  SECURITIES  REPRESENTED  BY THIS WARRANT HAVE BEEN ACQUIRED FOR
INVESTMENT  AND  NOT  WITH A  VIEW  TO,  OR IN  CONNECTION  WITH,  THE  SALE  OR
DISTRIBUTION THEREOF.

                                 M.D. LABS, INC.

                             STOCK PURCHASE WARRANT

                      WARRANT TO PURCHASE 90,000 SHARES OF
                        COMMON STOCK AS DESCRIBED HEREIN


Dated: February 7, 1996

                                     This certifies that, for value received:

                  Name:             Bradley A. Denton

                  Address:          11625 East Carol Avenue
                                    Scottsdale, Arizona  85259

is  entitled to purchase  from M.D.  Labs,  Inc.,  a Delaware  corporation  (the
"Company"),  having its principal  office at 1719 W.  University Dr., Suite 187,
Tempe,  Arizona 85281,  Thirty  Thousand  (90,000) fully paid and  nonassessable
shares of Common Stock,  par value $.001,  of the Company (the "Common  Stock"),
subject to the terms set forth herein,  at an exercise  price  described  below,
subject to adjustment as provided  elsewhere herein (the "Warrant  Price").  The
holder of this Warrant shall be referred to herein as the "Warrantholder" or the
"Holder." This Warrant is issued pursuant to a written  agreement by and between
the  incorporators  of the  Company  and the  Holder  on  December  10,  1995 as
consideration for Holder's commitment to work for the Company.

         1. "Common  Stock." If at any time, as a result of an  adjustment  made
pursuant to Section , the securities or other property  obtainable upon exercise
of this Warrant  shall include  shares or other  securities of the Company other
than  common  stock or  securities  of another  corporation  or other  property,
thereafter  the number of such other shares or other  securities  or property so
obtainable  shall be subject to adjustment  from time to time in a manner and on
terms as nearly  equivalent as practicable to the provisions with respect to the
Common  Stock  contained in Section , and all other  provisions  of this Warrant
with  respect to the Common  Stock  shall  apply on like terms to any such other
shares or other securities or property. Subject to the foregoing, and unless the
context requires otherwise, all references herein to "Common Stock"
<PAGE>
shall, in the event of an adjustment pursuant to Section , be deemed to refer as
well to any other  securities  or property  then  obtainable as a result of such
adjustments.

         2. Exercise of Warrant. The purchase rights represented by this Warrant
may be  exercised  by the  Warrantholder  or its  duly  authorized  attorney  or
representative,  in whole or in part (but not as to a fractional share of Common
Stock),  at any time and from time to time during the period  commencing  on the
date  described  in the Vesting  Schedule  below (the  "Commencement  Date") and
expiring at 5:00 p.m.,  Mountain  Standard Time,  June 2, 2001 (the  "Expiration
Date")(or such earlier date as may be provided pursuant to Section 9 herein), or
if such date is a day on which federal or state chartered  banking  institutions
are authorized by law to close,  then on the next succeeding day which shall not
be such a day, upon  presentation of this Warrant at the principal office of the
Company, or at the office of its stock transfer agent, if any, with the purchase
form attached hereto duly completed and signed,  and upon payment to the Company
in cash or by certified  check or bank draft of an amount equal to the number of
shares being so purchased  multiplied  by the Warrant  Price,  together with all
taxes applicable upon such exercise.  The Company agrees that the  Warrantholder
will be deemed the record  owner of such  shares as of the close of  business on
the date on which the Warrant  shall have been  presented and payment shall have
been made for such shares as  aforesaid.  Certificates  for the shares of Common
Stock so purchased shall be delivered to the  Warrantholder  within a reasonable
time,  not  exceeding  20  days,  after  the  exercise  in  full  of the  rights
represented by this Warrant.

         If the  Warrant is  exercised  in part only,  the Company  shall,  upon
surrender of this Warrant for cancellation, deliver a new Warrant evidencing the
rights of the  Warrantholder  to  purchase  the  balance of the shares of Common
Stock which the Warrantholder is entitled to purchase hereunder.

         3. Vesting Schedule.  Subject to Section 9 herein,  the purchase rights
represented by this Warrant shall become exercisable  according to the following
schedule:

# of Shares                Exercise Price   Vesting Date
- -----------                --------------   ------------

10,000                     $ 1.00           June 3, 1996
- ------                     ------           ------------
10,000                       1.00           December 31, 1996
- ------                     ------           -----------------
20,000                       0.50           December 31, 1996
- ------                     ------           -----------------
10,000                       1.00           December 31, 1997
- ------                     ------           -----------------
20,000                       0.50           December 31, 1997
- ------                     ------           -----------------
20,000                       0.50           December 31, 1998
- ------                     ------           -----------------
                           
         4. Certain Adjustments to Warrant.

                  (a) In case the Company  shall (i) pay a dividend in shares of
Common Stock or make a  distribution  in shares of Common Stock,  (ii) subdivide
its outstanding  shares of Common Stock, (iii) combine its outstanding shares of
Common Stock into a smaller number
                                        2
<PAGE>
of shares of Common  Stock or (iv)  issue by  reclassification  of its shares of
Common Stock other  securities  of the  Company,  the number of shares of Common
Stock purchasable upon exercise of this Warrant  immediately prior thereto shall
be adjusted so that the Warrantholder  shall be entitled to receive the kind and
number of shares of Common  Stock or other  securities  of the Company  which he
would have owned or have been entitled to receive at the happening of any of the
events described above, had such Warrant been exercised immediately prior to the
happening of such event or any record date with respect  thereto.  An adjustment
made pursuant to this paragraph (a) shall become effective immediately after the
effective  date of such event  retroactive  to the record date, if any, for such
event.

                  (b) Whenever the number of shares of Common Stock  purchasable
upon the exercise of this Warrant is adjusted,  as herein provided,  the Warrant
Price shall be adjusted by multiplying such Warrant Price  immediately  prior to
such  adjustment by a fraction,  of which the  numerator  shall be the number of
shares of Common Stock purchasable upon the exercise of this Warrant immediately
prior to such  adjustment,  and of which the denominator  shall be the number of
shares of Common Stock so purchasable immediately thereafter.

                  (c) In the event of any adjustment  pursuant to this Section ,
no  fractional  shares of Common  Stock shall be issued in  connection  with the
exercise of any  Warrants,  but the Company  shall,  in lieu of such  fractional
shares, make such cash payment therefor on the basis of the current market price
on the day immediately prior to exercise.

                  (d)  Irrespective of any adjustments  pursuant to this Section
to the Warrant Price or to the number of shares or other  securities  obtainable
upon  exercise of this  Warrant,  this Warrant may continue to state the Warrant
Price and the number of shares  obtainable upon exercise,  as the same price and
number of shares stated herein.

         5. Merger; Change in Control.

                  (a) Change in Control  shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the stockholders of
the Company in substantially the same proportions as their ownership of stock of
the  Company,  is or becomes  the  "beneficial  owner" (as defined in Rule 13d-3
under  said  Act),  directly  or  indirectly,   of  securities  of  the  Company
representing  one-third  or more of the total voting  power  represented  by the
Company's  then  outstanding  Common  Stock,  or (ii)  during  any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation, other
                                        3
<PAGE>
than a merger or  consolidation  which would  result in the Common  Stock of the
Company outstanding immediately prior thereto continuing to represent (either by
remaining  outstanding or by being  converted into Common Stock of the surviving
entity) at least two-thirds of the total voting power  represented by the Common
Stock of the Company or such surviving entity outstanding immediately after such
merger or  consolidation,  or the  stockholders of the Company approve a plan of
complete  liquidation of the Company or an agreement for the sale or disposition
by the  Company  of (in one  transaction  or a series  of  transactions)  all or
substantially all the Company's assets.

                  (b) In the event of a merger,  consolidation or reorganization
with another corporation in which the Company is not the surviving  corporation,
the Company  (subject to the approval of the Board) or the board of directors of
any  corporation  assuming the  obligations of the Company  hereunder shall take
action pursuant to either clause (i) or (ii) below:

                           (i)  Appropriate   provision  may  be  made  for  the
protection  of  this  Warrant  by the  substitution  on an  equitable  basis  of
appropriate shares of the surviving corporation, provided that the excess of the
aggregate fair market value (as determined by the Company) of the shares subject
to this Warrant  immediately  before such  substitution  over the exercise price
hereof is not more than the excess of the  aggregate  fair  market  value of the
substituted shares made subject to purchase  immediately after such substitution
over the exercise price thereof; or

                           (ii)  Appropriate  provision  may  be  made  for  the
cancellation  of this Warrant.  In such event,  the Company,  or the corporation
assuming  the  obligations  of the  Company  hereunder,  shall pay the Holder an
amount  of cash  (less  normal  withholding  taxes)  equal to the  excess of the
highest fair market value per share of the Common Stock during the 60-day period
immediately  preceding  the merger,  consolidation  or  reorganization  over the
exercise  price,  multiplied  by the number of shares  subject  to this  Warrant
(whether or not then exercisable).

                  (c) Upon a Change in  Control,  subject  to  Section 9 herein,
this Warrant  (provided  that it has been  outstanding  for at least six months)
shall accelerate so that the Holder shall have the right, at all times until the
expiration or earlier  termination of this Warrant,  to exercise the unexercised
portions of this Warrant,  including the portions  thereof which would,  but for
this paragraph 5(c), not yet be exercisable.

         6. Covenants of the Company. The Company covenants and agrees that:

                  (a) During the period within which the rights  represented  by
the Warrant may be  exercised,  the Company  will at all times  reserve and keep
available,  free from  preemptive  rights out of the aggregate of its authorized
but  unissued  Common  Stock,  for the  purpose of  enabling  it to satisfy  any
obligation  to issue shares of Common  Stock upon the exercise of this  Warrant,
the  number of shares of Common  Stock  deliverable  upon the  exercise  of this
Warrant.  If at any time the number of shares of  authorized  Common Stock shall
not be sufficient to effect
                                        4
<PAGE>
the exercise of this Warrant, the Company will take such corporate action as may
be necessary to increase its authorized but unissued Common Stock to such number
of shares as shall be  sufficient  for such  purpose.  The  Company  shall  have
analogous  obligations  with  respect  to any  other  securities  or  properties
issuable upon exercise of this Warrant.  The Company's  issuance of this Warrant
shall constitute full authority to its officers who are charged with the duty of
executing stock certificates to execute and issue the necessary certificates for
shares of Common Stock upon the exercise of this Warrant;

                  (b) All Common  Stock that may be issued upon  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid, nonassessable, and free from all taxes, liens, and charges with respect to
the issue thereof; and

                  (c) All  original  issue  taxes  payable  with  respect to the
issuance of shares upon the exercise of the rights  represented  by this Warrant
will be borne by the Company but in no event will the Company be  responsible or
liable for income taxes or transfer taxes upon the transfer of any Warrant.

         7. No  Stockholder  Rights.  Until  exercised,  this Warrant  shall not
entitle the  Warrantholder to any voting rights or other rights as a stockholder
of the Company.  The rights of the Holder are limited to those expressed in this
Warrant and are not  enforceable  against  the Company  except to the extent set
forth herein.

         8. Transfer Restrictions.

                  (a) This  Warrant  is not  transferable  except by will or the
laws of descent and distribution and, during Holder's  lifetime,  it may only be
exercised by Holder.

                  (b) Neither this Warrant nor the shares of stock issuable upon
the exercise  hereof have been  registered  under the Securities Act of 1933, as
amended (the "Securities  Act") or under any state securities laws and unless so
registered may not be  transferred,  sold,  pledged,  hypothecated  or otherwise
disposed of unless an exemption  from such  registration  is  available.  In the
event Holder  desires to transfer  any of the shares of stock issued  hereunder,
the Holder must give the Company prior written notice of such proposed  transfer
including the name and address of the proposed transferee.  Such transfer may be
made only either (i) upon publication by the Securities and Exchange  Commission
(the  "Commission") of a ruling,  interpretation,  opinion or "no action letter"
based upon  facts  presented  to said  Commission,  or (ii) upon  receipt by the
Company of an opinion  of  counsel to the  Company in either  case to the effect
that the proposed  transfer will not violate the  provisions  of the  Securities
Act,  the  Securities  Exchange  Act of  1934,  as  amended,  or the  rules  and
regulations  promulgated  under  either  such act, or in the case of clause (ii)
above,  to the effect  that the shares of stock to be sold or  transferred  have
been  registered  under the Securities Act and that there is in effect a current
prospectus  meeting the  requirements of Subsection 10(a) of the Securities Act,
which is being or will be delivered to the  purchaser or  transferee at or prior
to the time of delivery of the certificates evidencing the shares of stock to be
sold or transferred.
                                        5
<PAGE>
                  (c) Prior to any such  proposed  transfer,  and as a condition
thereto,  if such  transfer is not made  pursuant to an  effective  registration
statement  under the  Securities  Act,  the Holder  will,  if  requested  by the
Company,  deliver  to the  Company  (i) an  investment  covenant  signed  by the
proposed  transferee,  (ii) an agreement by such transferee to the impression of
the  restrictive  investment  legend  set  forth  herein on the  certificate  or
certificates  representing the securities acquired by such transferee,  (iii) an
agreement by such  transferee that the Company may place a "stop transfer order"
with its transfer agent or registrar, and (iv) an agreement by the transferee to
indemnify the Company to the same extent as set forth in paragraph 8(d) below.

                  (d) Holder  acknowledges  that Holder  understands the meaning
and legal  consequences  of this  Section  8, and the  Holder  hereby  agrees to
indemnify and hold harmless the Company,  its  representatives  and each officer
and  director  thereof  from and against any and all loss,  damage or  liability
(including  all  attorneys'  fees and costs incurred in enforcing this indemnity
provision) due to or arising out of (i) the inaccuracy of any  representation or
the breach of any warranty of Holder  contained in, or any other breach of, this
Warrant  Agreement,  (ii) any  transfer of any of this  Warrant or the shares of
stock  issuable  hereunder in violation of the  Securities  Act, the  Securities
Exchange Act of 1934, as amended, or the rules and regulations promulgated under
either of such acts, (iii) any transfer of this Warrant or any of said shares of
stock not in accordance with this Warrant Agreement or (iv) any untrue statement
or  omission  to state  any  material  fact in  connection  with the  investment
representations or with respect to the facts and representations supplied by the
Holder to  counsel  to the  Company  upon  which its  opinion  as to a  proposed
transfer shall have been based.

                  (e) Any assignment,  transfer, pledge,  hypothecation or other
disposition of this Warrant attempted contrary to the provisions of this Warrant
Agreement, or any levy of execution,  attachment or other process attempted upon
the Warrant, shall be null and void and without effect.

                  (f) Unless the shares of stock  issuable  hereunder  have been
registered  under the Securities Act, upon exercise of this Warrant (in whole or
in part) and the issuance of any of said shares,  the Company shall instruct its
transfer  agent to enter stop transfer  orders with respect to such shares,  and
all  certificates  representing  said  shares  shall  bear on the  face  thereof
substantially the following legend, insofar as is consistent with Arizona law:

                  "The shares of common stock  represented  by this  certificate
                  have not been registered  under the Securities Act of 1933, as
                  amended,  and may not be sold,  offered  for  sale,  assigned,
                  transferred  or  otherwise   disposed  of  unless   registered
                  pursuant  to the  provisions  of  that  Act or an  opinion  of
                  counsel  to  the  Company  is  obtained   stating   that  such
                  disposition is in compliance with an available  exemption from
                  such registration."

         9. Termination of the Warrant.  Notwithstanding  anything herein to the
contrary,  this  Warrant  can  become  exercisable  only  while the Holder is an
employee of the Company, and
                                        6
<PAGE>
shall not be  exercisable  after the  earliest  of (i) June 2, 2001;  (ii) three
months after the date the Holder's  employment with the Company  terminates,  if
such  termination is for any reason other than permanent  disability,  death, or
cause; (iii) the date the Holder's  employment with the Company  terminates,  if
such  termination  is for  cause,  as  determined  by the  Company  in its  sole
discretion;  or (iv) one year after the date the  Holder's  employment  with the
Company  terminates,  if such  termination  is the result of death or  permanent
disability.

         10. No Guarantee of Employment. This Agreement shall in no way restrict
any  right  (which  might  otherwise  exist)  of  the  Company  or  any  of  its
subsidiaries to terminate Holder's employment at any time.

         11. Lost  Certificate.  If this Warrant is lost,  stolen,  mutilated or
destroyed,  the  Company  shall,  on such terms as the  Company  may  reasonably
impose,  including a requirement that the  Warrantholder  obtain a bond, issue a
new Warrant of like denomination, tenor and date.

         12. Binding  Effect.  This Warrant shall inure to the benefit of and be
binding upon the Warrantholder,  the Company and their respective successors and
permitted assigns.

         13. Company's  Notice of Certain Events.  So long as this Warrant shall
be outstanding and unexercised (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization of the Company, reclassification of the Company, reclassification
of the capital stock of the Company, consolidation or merger of the Company with
or into another  corporation,  sale, lease or transfer of shall or substantially
all of the  property  and  assets of the  Company  to  another  corporation,  or
voluntary or involuntary dissolution, the Company shall cause to be delivered to
the Holder,  at least ten days prior to the date  specified in (a) or (b) below,
as the case may be, a notice  containing  a brief  description  of the  proposed
action and stating the date on which (a) a record is to be taken for the purpose
of  such  dividend,  distribution  or  rights,  or  (b)  such  reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.

         14. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by overnight  express  courtier or mailed,  postage
prepaid,  to the Holder at the address set forth above, or such other address as
Holder  shall have  designated  by  written  notice to the  Company as  provided
herein.  Notices or other  communications to the Company shall be deemed to have
been sufficiently given if delivered by hand, by facsimile  transmission,  or by
overnight express courier or mailed,  postage prepaid, to the company at 1719 W.
University  Dr., Suite 187,  Tempe,  Arizona 85281, or such other address as the
Company shall have designated by written
                                        7
<PAGE>
notice  to such  registered  owner as  herein  provided.  All  notices  required
hereunder  shall be in  writing  and shall be  deemed  received  when  delivered
personally,   one  business  day  after  delivery  to  a  nationally  recognized
commercial  overnight  courier service,  or two business days after mailing when
mailed by certified or registered mail to the Company or the Warrantholder.

         15.  Governing Law. The validity,  interpretation,  and  performance of
this  Warrant and of the terms and  provisions  hereof  shall be governed by and
construed in accordance  with the internal laws of the State of Arizona  without
giving effect to the principles of conflicts of laws.

         16. Amendment.  This Warrant may not be modified,  amended,  altered or
supplemented  except upon the  execution  and  delivery  of a written  agreement
executed by the Company and the Warrantholder.

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed effective as of February 7, 1996.


                                        M.D. LABS, INC.


                                        By:__________________________________
                                                 Hooman Nikzad
                                                 Chief Executive Officer
                                        8
<PAGE>
                                  PURCHASE FORM
                                  -------------

                                 To Be Executed
                            Upon Exercise of Warrant

         The undersigned  hereby  exercises the right to purchase _______ shares
of Common  Stock,  evidenced by the within  Warrant,  according to the terms and
conditions  thereof,  and herewith  makes payment of the purchase price in full.
The undersigned  requests that certificate(s) for such shares shall be issued in
the name set forth below.

Dated:                            [NAME OF HOLDER]


                                   By___________________________________
                                              (Signature)

                                   Name:_______________________________
                                              (Please Print)

                                   Address:_____________________________
                                           _____________________________
                                           _____________________________

                                   Employer Identification No., Social Security
                                   No. or other identifying number:

                                   _____________________________________

         If the  number of shares  specified  above  shall not be all the shares
purchasable under the within warrant,  the Warrantholder  hereby requests that a
new Warrant for the unexercised  portion shall be registered in  Warrantholder's
name and delivered to the address set forth in the Warrant.
                                        9

THESE  SECURITIES HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY  STATE  OR OTHER
JURISDICTION  ("BLUE SKY LAWS"), AND CANNOT BE RESOLD UNLESS THEY ARE REGISTERED
UNDER  THE ACT AND  ANY  APPLICABLE  BLUE  SKY  LAWS,  UNLESS  AN  EXEMPTION  IS
AVAILABLE.  THE  SECURITIES  REPRESENTED  BY THIS WARRANT HAVE BEEN ACQUIRED FOR
INVESTMENT  AND  NOT  WITH A  VIEW  TO,  OR IN  CONNECTION  WITH,  THE  SALE  OR
DISTRIBUTION THEREOF.

                                 M.D. LABS, INC.

                             STOCK PURCHASE WARRANT

                      WARRANT TO PURCHASE 40,000 SHARES OF
                        COMMON STOCK AS DESCRIBED HEREIN


Dated: June 3, 1996

         This certifies that, for value received including  consulting  services
already   performed   and  to  be  performed   pursuant  to  a  consulting   and
noncompetition agreement by and between M.D.
Labs, Inc. and Harvey A. Belfer effective June 1, 1996:

                  Name:             Harvey A. Belfer

                  Address:          6109 East Indian Bend
                                    Paradise Valley, Arizona  85253
                                    602-922-8888

is  entitled to purchase  from M.D.  Labs,  Inc.,  a Delaware  corporation  (the
"Company"),  having its principal  office at 1719 W.  University Dr., Suite 187,
Tempe,  Arizona  85281,  Forty Thousand  (40,000)  fully paid and  nonassessable
shares of Common Stock,  par value $.001,  of the Company (the "Common  Stock"),
subject to the terms set forth herein, at an exercise price of Three Dollars and
Fifty  Cents  ($3.50) per share,  subject to  adjustment  as provided  elsewhere
herein (the  "Warrant  Price").  The holder of this Warrant shall be referred to
herein as the "Warrantholder" or the "Holder."

         1. "Common  Stock." If at any time, as a result of an  adjustment  made
pursuant to Section , the securities or other property  obtainable upon exercise
of this Warrant  shall include  shares or other  securities of the Company other
than  common  stock or  securities  of another  corporation  or other  property,
thereafter  the number of such other shares or other  securities  or property so
obtainable  shall be subject to adjustment  from time to time in a manner and on
terms as nearly  equivalent as practicable to the provisions with respect to the
Common  Stock  contained in Section , and all other  provisions  of this Warrant
with  respect to the Common  Stock  shall  apply on like terms to any such other
shares or other securities or property. Subject to the
<PAGE>
foregoing,  and unless the context requires otherwise,  all references herein to
"Common  Stock" shall,  in the event of an  adjustment  pursuant to Section , be
deemed to refer as well to any other securities or property then obtainable as a
result of such adjustments.

         2. Exercise of Warrant. The purchase rights represented by this Warrant
may be  exercised  by the  Warrantholder  or its  duly  authorized  attorney  or
representative,  in whole or in part (but not as to a fractional share of Common
Stock),  at any time and from time to time during the period  commencing  on the
date of this  Warrant  (the  "Commencement  Date")  and  expiring  at 5:00 p.m.,
Mountain  Standard Time,  June 2, 2001 (the  "Expiration  Date")(or such earlier
date as may be provided pursuant to Section 9 herein),  or if such date is a day
on which federal or state chartered  banking  institutions are authorized by law
to close,  then on the next  succeeding  day which shall not be such a day, upon
presentation of this Warrant at the principal  office of the Company,  or at the
office of its stock  transfer  agent,  if any,  with the purchase  form attached
hereto duly completed and signed,  and upon payment to the Company in cash or by
certified  check or bank draft of an amount  equal to the number of shares being
so purchased multiplied by the Warrant Price, together with all taxes applicable
upon such exercise. The Company agrees that the Warrantholder will be deemed the
record owner of such shares as of the close of business on the date on which the
Warrant  shall have been  presented  and  payment  shall have been made for such
shares as  aforesaid.  Certificates  for the shares of Common Stock so purchased
shall be delivered to the Warrantholder  within a reasonable time, not exceeding
20 days, after the exercise in full of the rights represented by this Warrant.

         If the  Warrant is  exercised  in part only,  the Company  shall,  upon
surrender of this Warrant for cancellation, deliver a new Warrant evidencing the
rights of the  Warrantholder  to  purchase  the  balance of the shares of Common
Stock which the Warrantholder is entitled to purchase hereunder.

         3. Vesting Schedule.  Subject to Section 9 herein,  the purchase rights
represented by this Warrant shall become exercisable  according to the following
schedule: warrants to acquire 13,333 shares of Common Stock shall be exercisable
at May 31,  1997;  warrants to acquire  13,333  shares of Common  Stock shall be
exercisable  at May 31, 1998;  and warrants to acquire  13,334  shares of Common
Stock shall be exercisable at May 31, 1999.

         4. Certain Adjustments to Warrant.

                  (a) In case the Company  shall (i) pay a dividend in shares of
Common Stock or make a  distribution  in shares of Common Stock,  (ii) subdivide
its outstanding  shares of Common Stock, (iii) combine its outstanding shares of
Common  Stock into a smaller  number of shares of Common  Stock or (iv) issue by
reclassification  of its shares of Common Stock other securities of the Company,
the number of shares of Common Stock  purchasable  upon exercise of this Warrant
immediately prior thereto shall be adjusted so that the  Warrantholder  shall be
entitled  to  receive  the kind and  number of  shares of Common  Stock or other
securities  of the  Company  which he would have owned or have been  entitled to
receive at the happening of any of the events  described above, had such Warrant
been exercised immediately prior to the
                                        2
<PAGE>
happening of such event or any record date with respect  thereto.  An adjustment
made pursuant to this paragraph (a) shall become effective immediately after the
effective  date of such event  retroactive  to the record date, if any, for such
event.

                  (b) Whenever the number of shares of Common Stock  purchasable
upon the exercise of this Warrant is adjusted,  as herein provided,  the Warrant
Price shall be adjusted by multiplying such Warrant Price  immediately  prior to
such  adjustment by a fraction,  of which the  numerator  shall be the number of
shares of Common Stock purchasable upon the exercise of this Warrant immediately
prior to such  adjustment,  and of which the denominator  shall be the number of
shares of Common Stock so purchasable immediately thereafter.

                  (c) In the event of any adjustment  pursuant to this Section ,
no  fractional  shares of Common  Stock shall be issued in  connection  with the
exercise of any  Warrants,  but the Company  shall,  in lieu of such  fractional
shares, make such cash payment therefor on the basis of the current market price
on the day immediately prior to exercise.

                  (d)  Irrespective of any adjustments  pursuant to this Section
to the Warrant Price or to the number of shares or other  securities  obtainable
upon  exercise of this  Warrant,  this Warrant may continue to state the Warrant
Price and the number of shares  obtainable upon exercise,  as the same price and
number of shares stated herein.

         5. Merger; Change in Control.

                  (a) Change in Control  shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the stockholders of
the Company in substantially the same proportions as their ownership of stock of
the  Company,  is or becomes  the  "beneficial  owner" (as defined in Rule 13d-3
under  said  Act),  directly  or  indirectly,   of  securities  of  the  Company
representing  one-third  or more of the total voting  power  represented  by the
Company's  then  outstanding  Common  Stock,  or (ii)  during  any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation,  other than a merger or  consolidation  which  would  result in the
Common Stock of the Company outstanding  immediately prior thereto continuing to
represent  (either by remaining  outstanding  or by being  converted into Common
Stock of the  surviving  entity) at least  two-thirds  of the total voting power
represented  by the  Common  Stock  of the  Company  or  such  surviving  entity
outstanding immediately after such merger or consolidation,  or the stockholders
of the  Company  approve a plan of  complete  liquidation  of the  Company or an
agreement for the sale or
                                        3
<PAGE>
disposition by the Company of (in one  transaction or a series of  transactions)
all or substantially all the Company's assets.

                  (b) In the event of a merger,  consolidation or reorganization
with another corporation in which the Company is not the surviving  corporation,
the Company  (subject to the approval of the Board) or the board of directors of
any  corporation  assuming the  obligations of the Company  hereunder shall take
action pursuant to either clause (i) or (ii) below:

                           (i)  Appropriate   provision  may  be  made  for  the
protection  of  this  Warrant  by the  substitution  on an  equitable  basis  of
appropriate shares of the surviving corporation, provided that the excess of the
aggregate fair market value (as determined by the Company) of the shares subject
to this Warrant  immediately  before such  substitution  over the exercise price
hereof is not more than the excess of the  aggregate  fair  market  value of the
substituted shares made subject to purchase  immediately after such substitution
over the exercise price thereof; or

                           (ii)  Appropriate  provision  may  be  made  for  the
cancellation  of this Warrant.  In such event,  the Company,  or the corporation
assuming  the  obligations  of the  Company  hereunder,  shall pay the Holder an
amount  of cash  (less  normal  withholding  taxes)  equal to the  excess of the
highest fair market value per share of the Common Stock during the 60-day period
immediately  preceding  the merger,  consolidation  or  reorganization  over the
exercise  price,  multiplied  by the number of shares  subject  to this  Warrant
(whether or not then exercisable).

                  (c) Upon a Change in  Control,  subject  to  Section 9 herein,
this Warrant  (provided  that it has been  outstanding  for at least six months)
shall accelerate so that the Holder shall have the right, at all times until the
expiration or earlier  termination of this Warrant,  to exercise the unexercised
portions of this Warrant,  including the portions  thereof which would,  but for
this paragraph 5(c), not yet be exercisable.

         6. Covenants of the Company. The Company covenants and agrees that:

                  (a) During the period within which the rights  represented  by
the Warrant may be  exercised,  the Company  will at all times  reserve and keep
available,  free from  preemptive  rights out of the aggregate of its authorized
but  unissued  Common  Stock,  for the  purpose of  enabling  it to satisfy  any
obligation  to issue shares of Common  Stock upon the exercise of this  Warrant,
the  number of shares of Common  Stock  deliverable  upon the  exercise  of this
Warrant.  If at any time the number of shares of  authorized  Common Stock shall
not be sufficient to effect the exercise of this Warrant,  the Company will take
such  corporate  action as may be  necessary  to  increase  its  authorized  but
unissued  Common Stock to such number of shares as shall be sufficient  for such
purpose. The Company shall have analogous  obligations with respect to any other
securities or properties  issuable upon exercise of this Warrant.  The Company's
issuance of this Warrant shall constitute full authority to its officers who are
charged with the duty of
                                        4
<PAGE>
executing stock certificates to execute and issue the necessary certificates for
shares of Common Stock upon the exercise of this Warrant;

                  (b) All Common  Stock that may be issued upon  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid, nonassessable, and free from all taxes, liens, and charges with respect to
the issue thereof; and

                  (c) All  original  issue  taxes  payable  with  respect to the
issuance of shares upon the exercise of the rights  represented  by this Warrant
will be borne by the Company but in no event will the Company be  responsible or
liable for income taxes or transfer taxes upon the transfer of any Warrant.

         7. No  Stockholder  Rights.  Until  exercised,  this Warrant  shall not
entitle the  Warrantholder to any voting rights or other rights as a stockholder
of the Company.  The rights of the Holder are limited to those expressed in this
Warrant and are not  enforceable  against  the Company  except to the extent set
forth herein.

         8. Transfer Restrictions.

                  (a) This  Warrant  is not  transferable  except by will or the
laws of descent and distribution and, during Holder's  lifetime,  it may only be
exercised by Holder.

                  (b) Neither this Warrant nor the shares of stock issuable upon
the exercise  hereof have been  registered  under the Securities Act of 1933, as
amended (the "Securities  Act") or under any state securities laws and unless so
registered may not be  transferred,  sold,  pledged,  hypothecated  or otherwise
disposed of unless an exemption  from such  registration  is  available.  In the
event Holder  desires to transfer  any of the shares of stock issued  hereunder,
the Holder must give the Company prior written notice of such proposed  transfer
including the name and address of the proposed transferee.  Such transfer may be
made only either (i) upon publication by the Securities and Exchange  Commission
(the  "Commission") of a ruling,  interpretation,  opinion or "no action letter"
based upon  facts  presented  to said  Commission,  or (ii) upon  receipt by the
Company of an opinion  of  counsel to the  Company in either  case to the effect
that the proposed  transfer will not violate the  provisions  of the  Securities
Act,  the  Securities  Exchange  Act of  1934,  as  amended,  or the  rules  and
regulations  promulgated  under  either  such act, or in the case of clause (ii)
above,  to the effect  that the shares of stock to be sold or  transferred  have
been  registered  under the Securities Act and that there is in effect a current
prospectus  meeting the  requirements of Subsection 10(a) of the Securities Act,
which is being or will be delivered to the  purchaser or  transferee at or prior
to the time of delivery of the certificates evidencing the shares of stock to be
sold or transferred.

                  (c) Prior to any such  proposed  transfer,  and as a condition
thereto,  if such  transfer is not made  pursuant to an  effective  registration
statement  under the  Securities  Act,  the Holder  will,  if  requested  by the
Company,  deliver  to the  Company  (i) an  investment  covenant  signed  by the
proposed  transferee,  (ii) an agreement by such transferee to the impression of
the
                                        5
<PAGE>
restrictive   investment   legend  set  forth  herein  on  the   certificate  or
certificates  representing the securities acquired by such transferee,  (iii) an
agreement by such  transferee that the Company may place a "stop transfer order"
with its transfer agent or registrar, and (iv) an agreement by the transferee to
indemnify the Company to the same extent as set forth in paragraph 8(d) below.

                  (d) Holder  acknowledges  that Holder  understands the meaning
and legal  consequences  of this  Section  8, and the  Holder  hereby  agrees to
indemnify and hold harmless the Company,  its  representatives  and each officer
and  director  thereof  from and against any and all loss,  damage or  liability
(including  all  attorneys'  fees and costs incurred in enforcing this indemnity
provision) due to or arising out of (i) the inaccuracy of any  representation or
the breach of any warranty of Holder  contained in, or any other breach of, this
Warrant  Agreement,  (ii) any  transfer of any of this  Warrant or the shares of
stock  issuable  hereunder in violation of the  Securities  Act, the  Securities
Exchange Act of 1934, as amended, or the rules and regulations promulgated under
either of such acts, (iii) any transfer of this Warrant or any of said shares of
stock not in accordance with this Warrant Agreement or (iv) any untrue statement
or  omission  to state  any  material  fact in  connection  with the  investment
representations or with respect to the facts and representations supplied by the
Holder to  counsel  to the  Company  upon  which its  opinion  as to a  proposed
transfer shall have been based.

                  (e) Any assignment,  transfer, pledge,  hypothecation or other
disposition of this Warrant attempted contrary to the provisions of this Warrant
Agreement, or any levy of execution,  attachment or other process attempted upon
the Warrant, shall be null and void and without effect.

                  (f) Unless the shares of stock  issuable  hereunder  have been
registered  under the Securities Act, upon exercise of this Warrant (in whole or
in part) and the issuance of any of said shares,  the Company shall instruct its
transfer  agent to enter stop transfer  orders with respect to such shares,  and
all  certificates  representing  said  shares  shall  bear on the  face  thereof
substantially the following legend, insofar as is consistent with Arizona law:

                  "The shares of common stock  represented  by this  certificate
                  have not been registered  under the Securities Act of 1933, as
                  amended,  and may not be sold,  offered  for  sale,  assigned,
                  transferred  or  otherwise   disposed  of  unless   registered
                  pursuant  to the  provisions  of  that  Act or an  opinion  of
                  counsel  to  the  Company  is  obtained   stating   that  such
                  disposition is in compliance with an available  exemption from
                  such registration."

         9. Termination of the Warrant.  Notwithstanding  anything herein to the
contrary,  this  Warrant  can  become  exercisable  only  while the  Holder is a
consultant to the Company,  and shall not be  exercisable  after the earliest of
(i) June 2,  2001;  (ii) three  months  after the date the  Holder's  consulting
relationship with the Company terminates,  if such termination is for any reason
other than permanent  disability,  death, or cause;  (iii) the date the Holder's
consulting relationship with the Company terminates,  if such termination is for
cause, as determined by the
                                        6
<PAGE>
Company in its sole  discretion;  or (iv) one year  after the date the  Holder's
consulting relationship with the Company terminates,  if such termination is the
result of death or permanent disability.

         10. No Guarantee of Employment. This Agreement shall in no way restrict
any  right  (which  might  otherwise  exist)  of  the  Company  or  any  of  its
subsidiaries to terminate Holder's consulting relationship at any time.

         11. Lost  Certificate.  If this Warrant is lost,  stolen,  mutilated or
destroyed,  the  Company  shall,  on such terms as the  Company  may  reasonably
impose,  including a requirement that the  Warrantholder  obtain a bond, issue a
new Warrant of like denomination, tenor and date.

         12. Binding  Effect.  This Warrant shall inure to the benefit of and be
binding upon the Warrantholder,  the Company and their respective successors and
permitted assigns.

         13. Company's  Notice of Certain Events.  So long as this Warrant shall
be outstanding and unexercised (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization of the Company, reclassification of the Company, reclassification
of the capital stock of the Company, consolidation or merger of the Company with
or into another  corporation,  sale, lease or transfer of shall or substantially
all of the  property  and  assets of the  Company  to  another  corporation,  or
voluntary or involuntary dissolution, the Company shall cause to be delivered to
the Holder,  at least ten days prior to the date  specified in (a) or (b) below,
as the case may be, a notice  containing  a brief  description  of the  proposed
action and stating the date on which (a) a record is to be taken for the purpose
of  such  dividend,  distribution  or  rights,  or  (b)  such  reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.

         14. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by overnight  express  courtier or mailed,  postage
prepaid,  to the Holder at the address set forth above, or such other address as
Holder  shall have  designated  by  written  notice to the  Company as  provided
herein.  Notices or other  communications to the Company shall be deemed to have
been sufficiently given if delivered by hand, by facsimile  transmission,  or by
overnight express courier or mailed,  postage prepaid, to the company at 1719 W.
University  Dr., Suite 187,  Tempe,  Arizona 85281, or such other address as the
Company shall have  designated  by written  notice to such  registered  owner as
herein provided. All notices required hereunder shall be in writing and shall be
deemed received when delivered personally, one business day after delivery
                                        7
<PAGE>
to a nationally recognized commercial overnight courier service, or two business
days after mailing when mailed by certified or registered mail to the Company or
the Warrantholder.

         15.  Governing Law. The validity,  interpretation,  and  performance of
this  Warrant and of the terms and  provisions  hereof  shall be governed by and
construed in accordance  with the internal laws of the State of Arizona  without
giving effect to the principles of conflicts of laws.

         16. Amendment.  This Warrant may not be modified,  amended,  altered or
supplemented  except upon the  execution  and  delivery  of a written  agreement
executed by the Company and the Warrantholder.

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed effective as of June 3, 1996.


                                         M.D. LABS, INC.


                                         By:________________________________
                                                  Hooman Nikzad
                                                  Chief Executive Officer
                                        8
<PAGE>
                                  PURCHASE FORM

                                 To Be Executed
                            Upon Exercise of Warrant

         The undersigned  hereby  exercises the right to purchase _______ shares
of Common  Stock,  evidenced by the within  Warrant,  according to the terms and
conditions  thereof,  and herewith  makes payment of the purchase price in full.
The undersigned  requests that certificate(s) for such shares shall be issued in
the name set forth below.

Dated:                              [NAME OF HOLDER]


                                    By___________________________________
                                                      (Signature)

                                    Name:_______________________________
                                                      (Please Print)

                                    Address:_____________________________
                                            _____________________________
                                            _____________________________

                                    Employer Identification No., Social Security
                                    No. or other identifying number:

                                    ____________________________________________

         If the  number of shares  specified  above  shall not be all the shares
purchasable under the within warrant,  the Warrantholder  hereby requests that a
new Warrant for the unexercised  portion shall be registered in  Warrantholder's
name and delivered to the address set forth in the Warrant.
                                        9

THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933 AND HAVE BEEN TAKEN FOR INVESTMENT  PURPOSES ONLY AND
NOT WITH A VIEW TO THE  DISTRIBUTION  THEREOF,  AND SUCH  SECURITIES  MAY NOT BE
OFFERED FOR SALE, SOLD, OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION  STATEMENT  MADE UNDER THE SECURITIES ACT OF 1933 OR PURSUANT TO AN
EXEMPTION FROM THE  REGISTRATION  AND PROSPECTUS  DELIVERY  REQUIREMENTS OF SUCH
ACT,  THE  EXISTENCE  OF WHICH  EXEMPTION  HAS BEEN  CONFIRMED  BY AN OPINION OF
COUNSEL  REASONABLY  ACCEPTABLE  TO THE  COMPANY  OR BY A NO  ACTION  LETTER  OR
INTERPRETIVE OPINION OF THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION. THE
TRANSFER OF THESE SECURITIES IS RESTRICTED AS DESCRIBED HEREIN.


                  Void after 5:00 p.m., Mountain Standard Time
                                 on May 31, 2001

                                 M.D. LABS, INC.

                          COMMON STOCK PURCHASE WARRANT

         This certifies that, for value received,  Canyon Security,  L.L.C.,  an
Arizona limited  liability  company,  or registered  assigns (the "Holder"),  is
irrevocably  entitled,  subject to the  provisions of this Warrant,  to purchase
Fifty Three  Thousand Eight Hundred  Twenty-eight  (53,828)  shares,  $0.001 par
value per share, of the common stock (the "Common Stock") of M.D. Labs,  Inc., a
Delaware  corporation(the"Company"),at  a price  of  Three  and  50/100  Dollars
($3.50)per  share.  The exercise  price is subject to  adjustment as provided in
Section 6 below (the "Exercise Price").  The number of shares of Common Stock to
be received  upon the exercise of this Warrant  (the  "Warrant  Shares") and the
Exercise  Price may be adjusted from time to time as hereinafter  set forth.  In
addition, under certain circumstances as set forth herein, the Holder shall have
the right to require the Company to register the Warrant Shares.


         1.  Exercise of Warrant.  This  Warrant may be exercised in whole or in
part at any time or from  time to time on or after the date  hereof,  but in any
event by no later than 5:00 p.m.,  Mountain  Standard Time, on May 31, 2001 (the
fifth  anniversary of the date hereof) or if such date is a day on which federal
or state chartered banking  institutions are authorized by law to close, then on
the next  succeeding  day which  shall not be such a day,  by  presentation  and
surrender thereof to the Company at its principal office or at the office of its
stock transfer agent, if any, the Purchase Form annexed hereto duly executed and
accompanied by payment, in cash or by certified or official bank check,  payable
to the order of the Company,  in the amount of the Exercise Price for the number
of Warrant  Shares  specified in such form,  together with all taxes  applicable
upon such  exercise.  Alternatively,  in the Holder's  discretion,  the Exercise
Price may be satisfied (i) by cancellation of indebtedness to Holder, or (ii) by
surrendering to the Company the right to acquire a number of
<PAGE>
Warrant  Shares  having a value in excess of their  Exercise  Price equal to the
Exercise Price of the Warrant Shares as to which the Warrant is being exercised.
If this Warrant  should be exercised in part only,  the Company  shall,  if this
Warrant is surrendered  for  cancellation,  execute and deliver a new Warrant of
the same tenor evidencing the right of the Holder to purchase the balance of the
Warrant  Shares  purchasable  hereunder  upon the same terms and  conditions  as
herein set forth. Upon and as of receipt by the Company of the Purchase Form (in
the form attached  hereto) at the office or stock transfer agent of the Company,
in proper form for exercise,  and  accompanied by payment as herein provided and
evidence  reasonably  satisfactory  to the  Company  of the  availability  of an
exemption from registration  under applicable  securities laws, the Holder shall
be deemed to be the holder of record of the Warrant  Shares  issuable  upon such
exercise,  notwithstanding  that the stock  transfer  books of the Company shall
then be closed or that  certificates  representing  such shares of Common  Stock
shall not then be actually delivered to the Holder.

         2. Reservation of Shares.  The Company hereby covenants and agrees that
at all times during the period this Warrant is exercisable it shall reserve from
its authorized and unissued Common Stock for issuance and delivery upon exercise
of this  Warrant  such number of shares of its Common Stock as shall be required
for issuance and delivery upon exercise of this Warrant. The Company agrees that
its issuance of this Warrant shall constitute full authority to its officers who
are charged with the duty of executing  stock  certificates to execute and issue
the necessary  certificates for shares of Common Stock upon the exercise of this
Warrant.

         3.  Fractional  Shares.  No  fractional  shares  or stock  representing
fractional shares shall be issued upon the exercise of this Warrant.  In lieu of
any fractional  shares which would otherwise be issuable,  the Company shall pay
cash equal to the product of such  fraction  multiplied by the fair market value
of one share of Common  Stock on the date of  exercise,  as  determined  in good
faith by the Company's Board of Directors.


         4. Exercise, Transfer, Exchange, Assignment or Loss of Warrant.

                   (a)  This   Warrant  may  not  be   exercised,   assigned  or
transferred  except as provided herein and in accordance with and subject to the
provisions  of the  Securities  Act of  1933,  as  amended,  and the  Rules  and
Regulations  promulgated  thereunder  (said Act and such  Rules and  Regulations
being hereinafter collectively referred to as the "Act"). Any purported transfer
or assignment  made other than in accordance  with this Section 4 and Section 10
hereof shall be null and void and of no force and effect.

                  (b) This Warrant shall be  exercisable  or  transferable  only
upon the opinion of counsel  satisfactory to the Company, to the effect that (i)
the  exercising  party or the  transferee is a person to whom the Warrant Shares
may be issued or the Warrant may be legally transferred,  respectively,  without
registration  under the Act; and (ii) such exercise or transfer will not violate
any
                                        2
<PAGE>
applicable law or governmental rule or regulation including, without limitation,
any applicable federal or state securities law. Prior to the exercise,  transfer
or assignment,  the exercising party, assignor or transferor shall reimburse the
Company for its reasonable  expenses,  including  attorneys'  fees,  incurred in
connection with the exercise, transfer or assignment.

                  (c)  Any  assignment  permitted  hereunder  shall  be  made by
surrender  of this  Warrant to the  Company  at its  principal  office  with the
Assignment  Form annexed  hereto duly  executed and funds  sufficient to pay any
transfer tax. In such event,  the Company  shall,  without  charge,  execute and
deliver a new Warrant in the name of the assignee  named in such  instrument  of
assignment  and this Warrant  shall  promptly be  canceled.  This Wan-ant may be
divided or  combined  with  other  Warrants  which  carry the same  rights  upon
presentation  thereof at the  principal  office of the Company  together  with a
written  notice  signed  by  the  Holder  thereof,   specifying  the  names  and
denominations  in which new Warrants are to be issued.  The terms  "Wan-ant" and
"Wan-ants"  as  used  herein  includes  any  Warrants  in  substitution  for  or
replacement  of this  Warrant,  or into  which  this  Warrant  may be divided or
exchanged.

                  (d) Upon receipt by the Company of evidence satisfactory to it
of the loss, theft,  destruction or mutilation of this Warrant, and (in the case
of loss, theft or destruction) of reasonably satisfactory  indemnification,  and
upon surrender and cancellation of this Warrant, if mutilated,  the Company will
execute  and  deliver a new  Warrant  of like  tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void. Any such new
Warrant  executed and  delivered  shall  constitute  an  additional  contractual
obligation  on the part of the  Company,  whether  or not the  Warrant  so lost,
stolen, destroyed or mutilated shall be at any time enforceable by anyone.

                  (e) Each Holder of this  Warrant,  the  Warrant  Shares or any
other security  issued or issuable upon exercise of this Warrant shall indemnify
and hold harmless the Company,  its directors and officers,  and each person, if
any,  who  controls  the  Company,   against  any  losses,  claims,  damages  or
liabilities,  joint or  several,  to which  the  Company  or any such  director,
officer or any such person may become subject under the Act or statute or common
law,  insofar as such  losses,  claims,  damages or  liabilities,  or actions in
respect  thereof,  arise out of or are based upon the disposition by such Holder
of the Warrant, the Warrant Shares or other such securities in violation of this
Warrant.

         5. Rights of the Holder.  The Holder  shall not, by virtue  hereof,  be
entitled to any rights of a shareholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.


          6.  Adjustment of Exercise Price and Number of Shares.  The number and
kind of  securities  issuable upon the exercise of this Warrant and the Exercise
Price of such  securities  shall be subject to adjustment from time to time upon
the happening of certain events as follows:
                                        3
<PAGE>
                  (a) Adjustment for Dividends in Stock.  In case at any time or
from time to time, on or after the date hereof,  the holders of the Common Stock
of the  Company  (or any  shares  of  stock  or  other  securities  at the  time
receivable  upon the exercise of this Warrant)  shall have  received,  or, on or
after the record  date fixed for the  determination  of  eligible  stockholders,
shall have become  entitled  to  receive,  without  payment  therefor,  other or
additional  stock of the Company by way of dividend,  then and in each case, the
Holder of this Warrant shall, upon the exercise hereof,, be entitled to receive,
in addition to the number of shares of Common Stock  receivable  thereupon,  and
without  payment of any additional  consideration  therefor,  the amount of such
other or  additional  stock of the Company  which such Holder  would hold on the
date of such  exercise  had it been the holder of record of such Common Stock on
the date  hereof and had  thereafter,  during the period from the date hereof to
and including the date of such  exercise,  retained such shares and/or all other
additional stock receivable by it as aforesaid during such period, giving effect
to all  adjustments  called for during such period by paragraphs  (a) and (b) of
this paragraph 6.

                  (b) Adjustment for Reclassification, Reorganization or Merger.
In case of any  reclassification or change of the outstanding  securities of the
Company or of any  reorganization  of the Company (or any other  corporation the
stock or  securities  of which are at the time  receivable  upon the exercise of
this  Warrant) on or after the date  hereof,  or in case,  after such date,  the
Company  (or any  such  other  corporation)  shall  merge  with or into  another
corporation  or  convey  all  or  substantially  all of its  assets  to  another
corporation,  then and in each such case the  Holder of this  Warrant,  upon the
exercise  hereof at any time after the  consummation  of such  reclassification,
change,  reorganization,  merger or conveyance, shall be entitled to receive, in
lieu of the stock or other securities and property  receivable upon the exercise
hereof prior to such consummation,  the stock or other securities or property to
which such Holder would have been entitled upon such consummation if such Holder
had exercised this Warrant  immediately  prior  thereto,  all subject to further
adjustment as provided in paragraphs  (a) and (c); in each such case,  the terms
of this  paragraph  6 shall  be  applicable  to the  shares  of  stock  or other
securities  properly  receivable  upon the exercise of this  Warrant  after such
consummation.

                  (c) Stock Splits and Reverse Stock  Splits.  If at any time on
or after the date hereof the Company shall subdivide its  outstanding  shares of
Common  Stock into a greater  number of  shares,  the  Exercise  Price in effect
immediately prior to such subdivision shall thereby be  proportionately  reduced
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be  proportionately  increased;  and,  conversely,  if at any time on or
after the date hereof the outstanding  number of shares of Common Stock shall be
combined  into a  smaller  number  of  shares,  the  Exercise  Price  in  effect
immediately prior to such combination shall thereby be proportionately increased
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be proportionately decreased.

         7. Officer's Certificate. Whenever the Exercise Price or the Warrant or
Shares issuable on exercise of this Warrant shall be adjusted as required by the
provisions  of  Section 6 hereof,  the  Company  shall  forthwith  file with its
Secretary or an Assistant  Secretary at its principal office, and with its stock
transfer agent, if any, an officer's  certificate  showing the adjusted Exercise
Price and
                                        4
<PAGE>
Warrant  Shares  determined  as herein  provided and setting forth in reasonable
detail the facts  requiring such  adjustment.  Each such  officer's  certificate
shall be made  available at all  reasonable  times for inspection by the Holder,
and the Company shall,  forthwith after each such adjustment,  deliver a copy of
such certificate to the Holder.

         8. Registration Under Securities Act of 1933, as amended (the "Act"

         8.1 Certain Other  Definitions.  As used in this Common Stock  Purchase
Warrant, the following terms shall have the following respective meanings:

                  "Commission"  shall  mean the  United  States  Securities  and
Exchange Commission and any successor federal agency having similar powers.

                  "Initiating  Holder"  shall  mean any  Holder or  Holders,  as
defined herein,  who or which, in the aggregate,  own not less than 50.1% of the
aggregate  number  of  Registrable  Securities,  as  hereinafter  defined,  then
existing.

                  The term "majority of the Registrable  Securities" refers to a
majority of the specified Registrable Securities.

                  The terms "register", "registered" and "registration" refer to
a  registration  effected by preparing  and filing a  registration  statement in
compliance with the Act, and the declaration or ordering of the effectiveness of
such registration statement.

                  "Registrable  Securities"  shall mean those  Securities  which
have not been  included in a  registration  statement  deemed to be effective or
those Securities sold to the public.

                  "Registration  Expenses"  shall mean all expenses  incurred by
the Company in complying with this Section 8, including, without limitation, (i)
all registration and filing fees,  printing expenses,  fees and disbursements of
counsel for the Company (but not counsel retained by the Holders), blue sky fees
and expenses, and accountants' expenses including without limitation any special
audits or "comfort"  letters  incident to or required by any such  registration,
transfer taxes, fees of transfer agents and registrars, costs of insurances, and
fees of the National Association of Securities Dealers,  Inc., and (ii) any fees
and  disbursements  of  underwriters  customarily  paid by issuers or sellers of
securities, but excluding underwriting discounts and commissions.

                  "Securities"  shall  mean the  Common  Stock,  as  hereinafter
defined,  subject to this Common  Stock  Purchase  Warrant  and to that  certain
Common Stock Purchase Warrant issued to Canyon Security,  L.L.C.,  together with
any other  securities  which are hereafter issued with respect thereto by way of
exchange,  reclassification,  dividend  or  distribution,  whether  or not  such
securities have been sold to the public.
                                        5
<PAGE>
                  "Common Stock" shall mean all currently  outstanding shares of
$0.001  par  value  per  share  common  stock  of the  Company  now  issued  and
outstanding  and all shares  hereafter  issued and  outstanding,  as well as any
securities hereafter convertible into or exchangeable for shares of Common Stock
of the Company.

         8.2 Registration on Demand.

                  (a)  Demand.  After  September  1, 1997,  and upon the written
demand of one or more Initiating Holders, requesting that the Company effect the
registration  under  the Act of up to fifty  percent  (50%)  of such  Initiating
Holder's Registrable Securities and specifying the intended method or methods of
disposition thereof, the Company will promptly, but in any event within ten (10)
days,  give  written  notice of such  demanded  registration  to Holder,  or its
successors  and  assigns,  as the case may be,  and to the  other  acquirers  of
Registrable  Securities  (together with the Holder, the "Holders") and thereupon
will use its best efforts to effect the registration under the Act of:

                            (i) the Registrable Securities which the Company has
                  been so demanded to register by such  Initiating  Holder,  for
                  disposition in accordance  with the intended method or methods
                  of disposition stated in such demand,

                           (ii)  all  other  Registrable  Securities  which  the
                  Company has been  demanded to register by the Holders  thereof
                  by written  demand  delivered  to the Company  within ten (IO)
                  days after giving of such written notice by the Company (which
                  request  shall  specify  the  intended  method or  methods  of
                  disposition of such Registrable Securities), and

                           (iii) all shares of Common  Stock  which the  Company
                  may elect to register for its own account or the account(s) of
                  other  stockholder(s)  in  connection  with  the  offering  of
                  Registrable Securities pursuant to this Section 8.2,

all to the extent  requisite to permit the disposition (in accordance  -with the
intended  methods thereof as aforesaid) of the  Registrable  Securities so to be
registered,  provided that the Company shall not be required to effect more than
one (1) registration pursuant to this Section 8.2. If, at the date of receipt of
a demand by Initiating  Holder,  the Company has previously filed a registration
statement  pursuant to the Act (otherwise than on Form S-4 or S-8 or any similar
form for the registration of securities  pursuant to an employee benefit plan or
business combination or reorganization), the Company may defer the filing of any
such demanded  registration  statement to a date not later than ninety (90) days
after the effective date of such prior registration statement.

                  (b) Registration  Statement Form. Each  registration  demanded
pursuant to this  Section 8.2 shall be effected by the filing of a  registration
statement  on any form which the  Company is  eligible  to use,  such form to be
selected by the  Company,  after  consultation  with counsel and after notice of
such  selection  of such form is  delivered  to the  Holders of all  Registrable
Securities electing to participate in such registration; provided, however, that
if the Holders of at least a majority of the Registrable  Securities as to which
registration has been demanded pursuant to this Section 8.2 shall 
                                        6
<PAGE>
so request,  the Company shall file such registration  statement pursuant to the
Commission's  Rule 415, or any successor  rule or regulation  thereto,  so as to
permit the  continuous  or delayed  offering of the  Registrable  Securities  in
accordance with the intended  method of disposition  specified in the Initiating
Holder's  notice pursuant to subsection (a) of this Section 8.2, but in no event
shall the Company be required to maintain the effectiveness of such registration
beyond the period  specified in Section 8.4 (b).  Such  selection of form by the
Company shall be final.

                  (c)  Expenses.  Except as otherwise  prohibited  by applicable
law,  the Company  will pay all  Registration  Expenses in  connection  with the
registration of Registrable Securities requested pursuant to this Section 8.2.

                  (d) Effective Registration Statement. A registration requested
pursuant  to this  Section  8.2  shall not be  deemed  to be  effected  unless a
registration  statement covering all shares of Registrable  Securities specified
in notices  received as described in subsection (a), for sale in accordance with
the method of disposition  specified by the Initiating  Holder,  shall have been
declared  effective by the Commission or otherwise becomes  effective;  provided
that a  registration  which  does not become  effective  after the  Company  has
substantially  prepared and has filed or is in a position to file a registration
statement with respect thereto solely by reason of the refusal to proceed of any
of the  Initiating  Holders  (other than any  refusal to proceed  based upon the
advice of their  counsel  that the  registration  statement,  or the  prospectus
contained  therein,  contains an untrue statement of a material fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein not misleading in light of the circumstances  then existing)
shall be deemed to have been  effected  by the  Company  at the  request of such
Holder.

         8.3. Piggyback Registration Rights.

                  (a) Right to Include Registrable  Securities.  If, at any time
within five (5) years from the date hereof,  other than in  connection  with the
Company's initial registration and offering of its securities to the public, the
Company proposes to register any of its equity securities under the Act, whether
or not for sale for its own  account,  on a form  and in a  manner  which  would
permit  registration of Registrable  Securities for sale to the public under the
Act, it will, each such time, unless inclusion of Registrable Securities in such
registration is prohibited by the terms of a financing  transaction  pursuant to
which the Company raised gross  proceeds of at least $2 million,  give notice at
least  twenty  (20) days prior to the  proposed  filing  date to all  Holders of
Registrable Securities of its intention to do so, describing such securities and
specifying  the form and manner and the other  relevant  facts  involved in such
proposed registration and, upon the written request of any such Holder delivered
to the Company  within ten (10) days after the giving of any such notice  (which
request shall specify the Registrable  Securities  intended to be disposed of by
such Holder and the  intended  method or methods of  disposition  thereof),  the
Company shall use its best efforts to effect the  registration  under the Act of
Registrable  Securities  which the Company has been requested to register by the
Holders of Registrable Securities  (hereinafter  "Requesting Holders"),  but not
exceeding  ten  percent  (10%)  of the  Registrable  Securities  to  the  extent
requisite to permit the  disposition  (in accordance  with the intended  methods
thereof as aforesaid) of the Registrable
                                        7
<PAGE>
Securities  so to be  registered,  of those  Registrable  Securities  which  the
Company  is  requested  to  register  by Holder up to ten  percent  (10%) of the
Registrable Securities provided that:

                           (i) if, at any time after  giving  such notice of its
                  intention to register any of its  securities  and prior to the
                  effective  date  of  the   registration   statement  filed  in
                  connection with such registration, the Company shall determine
                  for any reason not to register  such  securities,  the Company
                  may,   at  its   election,   give   written   notice  of  such
                  determination  to each Holder of  Registrable  Securities  and
                  thereupon  shall be relieved of its obligation to register any
                  Registrable  Securities in connection  with such  registration
                  (but not its  obligation to pay the  Registration  Expenses in
                  connection  therewith  as provided in  subsection  (b) of this
                  Section 8.3), without prejudice, however, to the rights of any
                  one or more  Holders  to  request  that such  registration  be
                  effected in a subsequent such registration;

                           (ii)  if (a)  the  registration  so  proposed  by the
                  Company involves an underwritten offering of the securities so
                  being  registered to be  distributed by or through one or more
                  underwriters of recognized  standing under  underwriting terms
                  appropriate for such a transaction,  (b) the Company  proposes
                  that the  securities  to be  registered  in such  underwritten
                  offering  will not include all of the  Registrable  Securities
                  requested to be so included,  and (c) the managing underwriter
                  of such  underwritten  offering  shall  advise the  Company in
                  writing that,  in its opinion,  the  distribution  of all or a
                  specified portion of such Registrable Securities  concurrently
                  with the securities  being  distributed  by such  underwriters
                  will materially and adversely  affect the distribution of such
                  securities  by such  underwriters  (such  opinion to state the
                  reasons therefor), then the Company will promptly furnish each
                  such  Holder  of  Registrable  Securities  with a copy of such
                  opinion and may require, by written notice to each such Holder
                  accompanying  such opinion,  that the distribution of all or a
                  specified  portion of such Registrable  Securities be excluded
                  from such  distribution  (in case of an exclusion of a portion
                  of such Registrable  Securities,  such portion to be allocated
                  among such Holders in proportion to the respective  numbers of
                  shares of Registrable Securities so requested to be registered
                  by such Holders); provided, however, that if the Company shall
                  require such a reduction, the Holder of Registrable Securities
                  shall have the right to withdraw from the offering;

                           (iii) the Company  shall not be  obligated  to effect
                  any registration of Registrable  Securities under this Section
                  8.3 incidental to the registration of any of its securities in
                  connection  with  mergers,   acquisitions,   exchange  offers,
                  dividend reinvestment plans or stock options or other employee
                  benefit  plans  or  incidental  to  the  registration  of  any
                  non-equity  securities not convertible into equity securities;
                  and,
                                        8
<PAGE>
                           (iv) the number of shares of  Registrable  Securities
                  which shall be included  in each such  registration  shall not
                  exceed ten percent (10%) of the Registrable Securities.

                  No registration of Registrable  Securities effected under this
         Section  8.3 shall  relieve  the  Company of its  obligation  to effect
         registrations  of  Registrable   Securities  upon  the  request  of  an
         Initiating Holder pursuant to Section 8.2.

                  (b)  Expenses.  Except as otherwise  prohibited  by applicable
         law, the Company will pay all Registration  Expenses in connection with
         the registration of Registrable  Securities  requested pursuant to this
         Section 8.3.

         8.4 Registration Procedures. If and whenever the Company is required to
use its best efforts to effect the  registration of any  Registrable  Securities
under the Act as provided in Section 8.2 and 8.3, the Company shall promptly:

                  (a) use its best  efforts to prepare and (in any event  within
         (90)  days of the  last  date  on  which  the  Holders  of  Registrable
         Securities  may notify the  Company of their  request to include  their
         Registrable  Securities in such registration in accordance  herewith or
         such  earlier date as may be provided  elsewhere  herein) file with the
         Commission a registration  statement  with respect to such  Registrable
         Securities  and  use  its  best  efforts  to  cause  such  registration
         statement  to  become  effective  provided  that,  in  the  case  of  a
         registration of any Registrable  Securities  pursuant to Section 8.2 or
         8.3, such  preparation  and filing may be delayed if, in the good faith
         determination  of the Board of Directors of the Company,  such deferral
         would be in the best interest of the Company and such deferral would be
         without material  prejudice to the rights of the Holders of Registrable
         Securities  to  request  that  such   registration  be  effected  as  a
         subsequent registration under Section 8.3;

                  (b)  use its  best  efforts  to  prepare  and  file  with  the
         Commission  such  amendments  and  supplements  to  such   registration
         statement and the  prospectus  used in  connection  therewith as may be
         necessary to keep such registration  statement  effective and to comply
         with the  provisions of the Act with respect to the  disposition of all
         Registrable   Securities   and  other   securities   covered   by  such
         registration  statement  until the  earlier of such time as all of such
         Registrable  Securities and other  securities  have been disposed of in
         accordance  with the intended  methods of  disposition by the seller or
         sellers  thereof  set  forth  in  such  registration  statement  or the
         expiration  of one  (1)  year  (or,  in the  case  of  registration  of
         Registrable Securities pursuant to Section 8.3, ninety (90) days) after
         such registration  statement becomes effective;  and will furnish, upon
         request,  to each such seller and each  Requesting  Holder prior to the
         filing   thereof  a  copy  of  any  amendment  or  supplement  to  such
         registration  statement  or  prospectus  and  shall  not  file any such
         amendment or supplement  to which any such seller or Requesting  Holder
         shall have  reasonably  objected on the grounds that such  amendment or
         supplement does not comply in all
                                        9
<PAGE>
         material  aspects with the  requirements  of the Act or of the rules or
         regulations thereunder with regard to disclosure concerning a holder of
         Registrable Securities;

                  (c) furnish to each seller of such Registrable  Securities and
         each  Requesting  Holder  such  number  of  conformed  copies  of  such
         registration  statement  and of  each  such  amendment  and  supplement
         thereto (in each case including all exhibits), such number of copies of
         the prospectus included in such registration  statement (including each
         preliminary prospectus and any summary prospectus),  in conformity with
         tile requirements of the Act, such documents,  if any,  incorporated by
         reference in such registration statement or prospectus,  and such other
         documents, as such seller or Requesting Holder may reasonably request;

                  (d)  use  its  best   efforts  to   register  or  qualify  all
         Registrable   Securities   and  other   securities   covered   by  such
         registration  statement under such other securities or blue sky laws of
         the  States  of the  United  States  as each  seller  shall  reasonably
         request,  to keep Such  registration or  qualification in effect for so
         long as such registration  statement remains in effect,  and do any and
         all other acts and things which may be necessary or advisable to enable
         such seller to consummate the disposition in such  jurisdictions of its
         Registrable Securities covered by such registration  statement,  except
         that the Company  shall not for any such purpose be required to qualify
         generally to do business as a foreign  corporation in any  jurisdiction
         wherein  it is not and  would  not,  but for the  requirements  of this
         subsection  (d), be obligated to be so qualified,  or to subject itself
         to taxation in any such jurisdiction,  or to consent to general service
         of process in any such jurisdiction or to obtain clearance in more than
         five (5)  states  if the  Common  Stock  is not  listed  on the  Nasdaq
         National Market System;

                  (e) upon  request,  use best efforts to furnish to each seller
         of  Registrable   Securities  and  each  Requesting   Holder  a  signed
         counterpart,  addressed to such seller and such Requesting  Holder,  of
         (i) an opinion of counsel to the Company,  dated the effective  date of
         such  registration  statement  (and, if such  registration  includes an
         underwritten  public offering,  dated the date of the closing under the
         underwriting  agreement),  and (ii) a "comfort"  letter,  signed by the
         independent   public  accountants  who  have  certified  the  Company's
         financial  statements  included in such registration  statement,  dated
         after the effective date of such  registration  statement (and, if such
         registration statement includes an underwritten public offering,  dated
         the date of the closing under tile  underwriting  agreement),  covering
         substantially  the  same  matters  with  respect  to such  registration
         statement  (and the  prospectus  included  therein) and, in the case of
         such accountants' letter, with respect to events subsequent to the date
         of such financial statements, as are customarily covered in opinions of
         issuer's counsel and in accountant's  letters delivered to underwriters
         in underwritten public offerings of securities;
                                       10
<PAGE>
                  (f) immediately  notify each seller of Registrable  Securities
         covered by such registration  statement and each Requesting  Holder, at
         any time when a prospectus relating thereto is required to be delivered
         under the Act, upon discovery  that, or upon the happening of any event
         as a result of which,  the  prospectus  included  in such  registration
         statement,  as  then in  effect,  includes  an  untrue  statement  of a
         material fact or omits to state any material fact required to be stated
         therein or necessary to make the  statements  therein not misleading in
         light of the  circumstances  then existing,  which untrue  statement or
         omission   requires   amendment  of  the   registration   statement  or
         supplementation  of the  prospectus,  and at the  request  of any  such
         seller or  Requesting  Holder,  prepare  and furnish to such seller and
         Requesting  Holder a reasonable  number of copies of a supplement to or
         an  amendment  of such  prospectus  as may be  necessary  so  that,  as
         thereafter  delivered to the acquirers of such Registrable  Securities,
         such  prospectus  shall not include an untrue  statement  of a material
         fact or omit to state a material fact required to be stated  therein or
         necessary to make the statements therein not misleading in the light of
         the circumstances then existing;  provided, however that each Holder of
         Registrable   Securities   registered  pursuant  to  such  registration
         statement  agrees  that  Such  Holder  will not  sell  any  Registrable
         Securities pursuant to such registration statement during the time that
         the Company is preparing and filing with the Commission a supplement to
         or an amendment of such prospectus or registration statement;

                  (g)  otherwise  use  its  best  efforts  to  comply  with  all
         applicable rules and regulations of the Commission,  and make available
         to  its  Holders,  as  soon  as  reasonably  practicable,  an  earnings
         statement  covering the period of at least twelve (12) months,  but not
         more than eighteen (I 8) months,  beginning with the first month of the
         first fiscal  quarter  after the  effective  date of such  registration
         statement,  which  earnings  statement  shall satisfy the provisions of
         Section 11 (a) of the Act;

                  (h) provide and cause to be  maintained  a transfer  agent and
         registrar for all Registrable  Securities  covered by such registration
         statement  from and after a date not later than the  effective  date of
         such registration statement; and

                  (i) use its best  efforts to list all  Registrable  Securities
         covered by such registration  statement on each securities  exchange on
         which any of the Common  Stock of the Company is then listed or, if the
         Company's  Common  Stock is not then  quoted on NASDAQ or listed on any
         national  securities  exchange,  use its  best  efforts  to  have  such
         Registrable Securities covered by such registration statement quoted on
         NASDAQ  or,  at  the  option  of  the  Company,  listed  on a  national
         securities exchange.

         The Company may require  each seller of  Registrable  Securities  as to
         which any  registration  is being  effected to furnish the Company such
         information   regarding  such  seller  and  the  distribution  of  such
         securities as the Company may from time to time  reasonably  request in
         writing  and as  shall  be  required  by law  or by the  Commission  in
         connection therewith and such seller shall furnish such information. If
         such  information  is not provided when  requested,  the Company in its
         discretion may exclude the affected shares from registration.
                                       11
<PAGE>
         8.5 Underwritten Offerings.

                  (a)  Underwritten  Offerings.  If  the  number  of  shares  of
         Registrable  Securities  and  any  other  securities  to be sold in any
         underwritten  offering involves a registration  requested by Initiating
         Holders  pursuant  to  Section  8.2  should  be  limited  due to market
         conditions or otherwise, the Company shall include in such registration
         to the extent of the number which the Company is so advised can be sold
         in such  offering  (i) first,  Registrable  Securities  requested to be
         included  in such  registration,  pro rata  among the  Holders  of such
         Registrable  Securities  on the  basis of the  number of shares of such
         securities  requested  to be included by such  Holders,  and (ii) other
         securities of the Company proposed to be included in such registration,
         in accordance  with the  priorities,  if any,  then existing  among the
         Company and the Holders of such securities.

                  (b) Underwriting  Agreement.  If requested by the underwriters
         for any underwritten offering of Registrable  Securities on behalf of a
         Holder or Holders of Registrable  Securities pursuant to a registration
         requested   under   Section   8.2,  the  Company  will  enter  into  an
         underwriting  agreement reasonably  acceptable to the Company with such
         underwriters  for  such  offering,   such  agreement  to  contain  such
         representations  and warranties by the Company and such other terms and
         provisions as are customarily contained in underwriting agreements with
         respect to distributions, including, without limitation, indemnities to
         the  effect  and to the  extent  provided  in  Section  8.7,  provided,
         however,  that such agreement  shall not contain any provision which is
         inconsistent  with the  provisions  hereof The  Holders of  Registrable
         Securities on whose behalf Registrable Securities are to be distributed
         by  such  underwriters  shall  be  parties  to  any  such  underwriting
         agreement  and the  representations  and  warranties  by, and the other
         agreements  on the part of, the  Company to and for the benefit of such
         underwriters  shall also be made to and for the benefit of such Holders
         of Registrable Securities. Such Holders of Registrable Securities shall
         not  be  required  by  the  Company  to  make  any  representations  or
         warranties to or agreements with the Company or the underwriters  other
         than reasonable  representations,  warranties or agreements  (including
         indemnity  agreements  customary in secondary offerings) regarding such
         Holder, such Holder's Registrable Securities and such Holder's intended
         method or methods of disposition and any other representation  required
         by law.
                  (c) Piggyback  Underwritten  Offerings.  If the Company at any
         time  proposes  to  register  any of its  securities  under  the Act as
         contemplated  by Section 8.3 and such  securities are to be distributed
         by or through one or more  underwriters,  the Company will use its best
         efforts,  if requested  by any Holder of  Registrable  Securities,  who
         requests piggyback registration of Registrable Securities in connection
         therewith  pursuant to Section 8.3 to arrange for such  underwriters to
         include  the  Registrable  Securities  to be  offered  and sold by such
         Holder  among the  securities  to be  distributed  by or  through  such
         underwriters,  provided  that,  for  purposes of this  sentence,  "best
         efforts"  shall not  require  the  Company to reduce the amount or sale
         price of such securities  proposed to be distributed by or through such
         underwriters.  The Holders of Registrable  Securities to be distributed
         by such  underwriters  shall be parties to the  underwriting  agreement
         between the Company and such underwriters
                                       12
<PAGE>
         and the  representations and warranties by, and the other agreements on
         the part of, the Company to and for the  benefit of such  underwriters,
         shall  also  be  made  to and  for  the  benefit  of  such  Holders  of
         Registrable  Securities,  and the  Company  will  cooperate  with  such
         Holders  of  Registrable  Securities  to the end  that  the  conditions
         precedent to the obligations of such Holders of Registrable  Securities
         under such underwriting agreement shall not include conditions that are
         not  customary  in  underwriting  agreements  with  respect to combined
         primary and secondary distributions and shall be otherwise satisfactory
         to such Holders.  Such Holders of Registrable  Securities  shall not be
         required by the Company to make  representations  or  warranties  to or
         agreements  (including customary indemnity agreements) with the Company
         or the underwriters other than reasonable  representations,  warranties
         or  agreements   regarding  such  Holder,  such  Holder's   Registrable
         Securities and such Holder's intended method or methods of distribution
         and any other representation required by law.

                  (d)  Selection  of   Underwriters.   Whenever  a  registration
         requested pursuant to Section 8.2 is for all underwritten offering, the
         Holders of a majority of the  Registrable  Securities  included in such
         registration shall have the right to select the managing underwriter(s)
         to  administer  the  offering,  subject to the approval of the Company,
         which approval shall not be  unreasonably  withheld.  If the Company at
         any time proposed to register any of its  securities  under the Act for
         sale for its own account and such  securities  are to be distributed by
         or through one or more  underwriters,  the  selection  of the  managing
         underwriter(s) shall be made by the Company and notice of the selection
         thereof  delivered  to the  Holders  of.'  all  Registrable  Securities
         eligible to participate in such registration.

                  (e)  Holdback  Agreements.  If any  registration  pursuant  to
         Section 8.2 or 8.3 shall be in connection with an  underwritten  public
         offering,  each Holder of Registrable  Securities agrees by acquisition
         of  such  Registrable  Securities,  if  so  required  by  the  managing
         underwriter,   not  to  effect  any  public  sale  or  distribution  of
         Registrable  Securities or other  securities of the Company (other than
         as part of such  underwritten  public  offering)  within seven (7) days
         prior  to the  effective  date of such  registration  statement  or one
         hundred twenty (120) days after the effective date of such registration
         statement.

         8.6  Preparation:  Reasonable  Investigation.  In  connection  with the
preparation and filing of each registration  statement  registering  Registrable
Securities  under the Act,  the  Company  will give the  Holders of  Registrable
Securities on whose behalf such  Registrable  Securities are to be so registered
and the  underwriters,  if any, each  Requesting  Holder,  and their  respective
counsel and  accountants,  the  opportunity to participate in the preparation of
such registration statement,  each prospectus included therein or filed with the
Commission and each amendment thereof or supplement thereto,  and will give each
of them such access to its books and records and such  opportunities  to discuss
the  business  of the  Company  with its  officers  and the  independent  public
accountants  who have certified its financial  statements as shall be reasonably
necessary to conduct a reasonable  investigation  within the meaning of the Act.
To  minimize  disruption  and  expense to the  Company  during the course of the
registration  process,  sellers of  Registrable  Securities to be covered by any
such  registration  statement  shall  coordinate  their  investigation  and  due
diligence
                                       13
<PAGE>
efforts hereunder and, to the extent practicable,  will act through a single set
of counsel and a single set of accountants.

         8.7 Indemnification.

                  (a)  Indemnification  by  the  Company.  In the  event  of any
registration  of any securities of the Company under the Act, the Company shall,
and  hereby  does,  hereby  indemnify  and  hold  harmless  in the  case  of any
registration  statement filed pursuant to this Section 8.2 or 8.3, the seller of
any Registrable Securities covered by such registration statement, such Seller's
directors,  trustees,  officers,  agents and  attorneys  each  other  person who
participates  as an underwriter  in the offering or sale of such  securities and
each other  person,  if any,  who controls  such seller or any such  underwriter
within the meaning of the Act against any losses, claims,  damages,  liabilities
or expenses,  joint or several, to which such seller or Requesting Holder or any
such  director  or officer or  participating  person or  controlling  person may
become  subject  under the Act or  otherwise,  insofar as such  losses,  claims,
damages,  liabilities or expenses (or actions or proceedings in respect thereof)
arise  out of or are based  upon (x) any  untrue  statement  or  alleged  untrue
statement of any material fact  contained in any  registration  statement  under
which such securities were registered under the Act, any preliminary prospectus,
final prospectus or summary prospectus  contained  therein,  or any amendment or
supplement thereto, or any document  incorporated by reference therein,  (y) any
omission or alleged  omission to state  therein a material  fact  required to be
stated therein or necessary to make the statements  therein not  misleading,  or
(z) any failure by the Company  timely to deliver a  prospectus  or otherwise to
comply with  applicable  securities  laws and the Company  will  reimburse  such
seller,  Requesting  Holder and each such  director,  trustee,  officer,  agent,
attorney, participating person and controlling person for any legal or any other
expenses  reasonably  incurred  by  them in  connection  with  investigating  or
defending any such loss, claim, liability,  action or proceeding,  provided that
the  Company  shall not be liable in any such case to the  extent  that any such
loss,  claim,  damage,  liability or expense (or action or proceeding in respect
thereof)  arises out of or is based upon an untrue  statement or alleged  untrue
statement or omission or alleged omission made in such  registration  statement,
any such preliminary prospectus, final prospectus, summary prospectus, amendment
or supplement in reliance upon and in conformity with  information  furnished to
the  Company  by such  seller or such  Requesting  Holder or any such  director,
trustee, officer, participating person or controlling person.

                  (b) Indemnification by the Seller. The Company may require, as
a condition to including  Registrable  Securities in any registration  statement
filed  pursuant to Section 8.2 or 8.3,  that the Company  shall have received an
undertaking satisfactory to it from each- prospective seller of such securities,
severally  and not jointly,  to indemnify  and hold harmless (in the same manner
and to the same extent as set forth in  subsection  (a) of this Section 8.7) the
Company,  each  director of the  Company,  each officer of the Company who shall
sign such registration statement and each other person, if any, who controls the
Company  within the meaning of the Act, and the Company's  agents and attorneys,
with respect to (i) any untrue  statement in or omission from such  registration
statement, any
                                       14
<PAGE>
preliminary prospectus, final prospectus or summary prospectus included therein,
or any amendment or supplement  thereto,  if such statement or omission was made
in reliance upon and in conformity with information  furnished to the Company by
such seller or (ii) any failure by such seller timely to deliver a prospectus or
otherwise to comply with applicable securities laws. Such indemnity shall remain
in full force and effect regardless of any investigation made by or on behalf of
the Company or any such  director,  officer,  agent,  or attorney or controlling
person and shall survive the transfer of such securities by such seller.

                  (c)  Notice of  Claims,  etc.  Promptly  after  receipt  by an
indemnified  party of notice of the commencement of any action or any proceeding
involving a claim referred to in the preceding  subsections of this Section 8.7,
such indemnified party will, if a claim in respect thereof is to be made against
an indemnifying  party, give written notice to the latter of the commencement of
such action,  provided that the failure of any indemnified  party to give notice
as provided therein shall not relieve the indemnifying  party of its obligations
under the preceding  subsections of this Section 8.7,  except to the extent that
the indemnifying party is actually materially prejudiced by such failure to give
notice. In case such action is brought against an indemnified  party,  unless in
such indemnified  party's reasonable judgment (i) a conflict of interest between
such indemnified and indemnifying parties may exist in respect of such claim, or
(ii) the  indemnified  party has available to it reasonable  defenses  which are
different from or additional to those available to the  indemnifying  party, the
indemnifying party shall be entitled to participate in and to assume the defense
thereof,  jointly with any other indemnifying party similarly  notified,  to the
extent  that  it  may  wish,  with  counsel  reasonably   satisfactory  to  such
indemnified  party,  and  after  notice  from  the  indemnifying  party  to such
indemnified  party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party shall not be liable to such indemnified  party for any legal
or other  expenses  subsequently  incurred by the latter in connection  with the
defense thereof other than reasonable  costs of  investigation.  Notwithstanding
the foregoing, in any such action, any indemnified party shall have the right to
retain its own counsel but the fees and  disbursements  of such counsel shall be
at the expense of such indemnified party unless (i) the indemnifying party shall
have failed to retain counsel for the indemnified  person as aforesaid,  or (ii)
the indemnifying  party and such indemnified party shall have mutually agreed to
the retention of such  counsel.  It is understood  that the  indemnifying  party
shall  not,  in  connection  with any  action  or  related  actions  in the same
jurisdiction, be liable for the fees and disbursements of more than one separate
firm qualified in such jurisdiction to act as counsel for the indemnified party.
The indemnifying  party shall not be liable for any settlement of any proceeding
effected  without its written  consent  but if settled  with such  consent or if
there be a final judgment for the plaintiff,  the  indemnifying  party agrees to
indemnify the indemnified party from and against any loss or liability by reason
of such settlement or judgment. No indemnifying party shall, without the consent
of the  indemnified  party,  consent to entry of any  judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the  claimant  or  plaintiff  to such  indemnified  party of a release  from all
liability in respect to such claim or litigation.
                                       15
<PAGE>
                  (d) Other  Indemnification.  Indemnification  similar  to that
specified in the  preceding  subsections  of this Section 8.7 (with  appropriate
modifications)  shall be given by the  Company  and each  seller of  Registrable
Securities with respect to any required  registration or other  qualification of
such  Registrable  Securities  under any federal or state law or  regulation  of
governmental authority other than the Act.

                  (e) Contribution.  If the indemnification provided for in this
Section 8.7 is unavailable or insufficient to hold harmless an indemnified party
in respect of any losses, claims, damages,  liabilities or expenses described as
indemnifiable  pursuant to subsections (a) or (b), then each indemnifying  party
shall, in lieu of indemnifying such indemnified party,  contribute to the amount
paid or payable by such indemnified  party, as a result of such losses,  claims,
damages,  liabilities  or expenses in such  proportion as appropriate to reflect
the  relative  fault  of the  Company,  on the  one  hand,  or  such  seller  of
Registrable  Securities on the other hand, and to the parties'  relative intent,
knowledge,  access to  information  and  opportunity  to correct or prevent  any
untrue statement or omission giving rise to such indemnification obligation. The
Company and the Holder of Registrable Securities agree that it would not be just
and equitable if  contributions  pursuant to this subsection (e) were determined
by pro rata allocation  (even if Holders of Registrable  Securities were treated
as one entity for such purpose) or by any other method of  allocation  which did
not take  account  of the  equitable  considerations  referred  to above in this
subsection  (e). No person guilty of fraudulent  misrepresentations  (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution  from any
person who is not guilty of such fraudulent misrepresentation.

                  (f) Indemnification  Payments. The indemnification required by
this Section 8.7 shall be made by periodic payments of the amount thereof during
the course of the  investigation  or defense,  is and when bills are received or
any expense, loss, damage or liability is incurred.

                  (g)  Limitation  on  Seller's  Payments.  Notwithstanding  any
provision  hereof to the contrary,  the  liability of any seller of  Registrable
Securities under this Section 8.2 shall in no event exceed the proceeds received
by  such  seller  from  the  sale  of  Registrable  Securities  covered  by  the
registration statement giving rise to such liability.

         9.  Notices  to  Warrant  Holders.  So long as this  Warrant  shall  be
outstanding  and  unexercised  (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the Company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization  of the  Company,  reclassification  of the capital  stock of the
Company,   consolidation   or  merger  of  the  Company  with  or  into  another
corporation,  sale,  lease  or  transfer  of all or  substantially  -,ill of the
property  and assets of the  Company to another  corporation,  or  voluntary  or
involuntary dissolution,  the Company shall cause to be delivered to the Holder,
at least ten days prior to the date  specified in (a) or (b) below,  as the case
may be, a notice containing a brief
                                       16
<PAGE>
description of the proposed action and stating the date on which (a) a record is
to be taken for the purpose of such  dividend,  distribution  or rights,  or (b)
such reclassification, reorganization, consolidation, merger, conveyance, lease,
dissolution, liquidation or winding up is to take place and the date, if any, is
to be fixed, as of which the holders of Common Stock of record shall be entitled
to  exchange  their  shares of Common  Stock for  securities  or other  property
deliverable upon such reclassification,  reorganization,  consolidation, merger,
conveyance, dissolution, liquidation or winding up.


         10. Transfer to Comply with the Securities Act of 1933.

                  (a) This Warrant and the Warrant  Shares or any other security
         issued or  issuable  upon  exercise  of this  Warrant  may not be sold,
         transferred  or  otherwise  disposed  of except to a person who, in the
         opinion of counsel reasonably  satisfactory to the Company, is a person
         to whom this Warrant or such Warrant  Stock may legally be  transferred
         pursuant  to Section 4 hereof  without  registration  and  without  the
         delivery of a current prospectus under the Act with respect thereto and
         then only against receipt of an agreement of such person to comply with
         the  provision  of this  Section 10 with respect to any resale or other
         disposition of such securities  unless, in the opinion of such counsel,
         such agreement is not required.

                  (b) The Company may cause the following legend to be set forth
         on each certificate  representing  Warrant Shares or any other security
         issued or  issuable  upon  exercise  of this  Warrant  not  theretofore
         distributed to the public or sold to underwriters  for  distribution to
         the public,  unless counsel for the Company is of the opinion as to any
         such certificate that such legend is unnecessary:

                  The  securities  represented  by this  certificate  may not be
                  offered  for  sale,  sold  or  otherwise   transferred  except
                  pursuant to an effective registration statement made under the
                  Securities  Act  of  1933  (the  "Act"),  or  pursuant  to  an
                  exemption from registration under the Act, the availability of
                  which is to be established to the satisfaction of the Company.

         11.  Governing Law. This Warrant shall be governed by, and construed in
accordance  with,  the laws of the  State of  Arizona  applicable  to  contracts
entered into and to be performed wholly within such State.

         12.  Attorney  Review.  The Company has had this Common Stock  Purchase
Warrant  reviewed by an attorney  independent  of Holder and  independent of any
counsel which may have represented Holder.
                                       17
<PAGE>
         13. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by  overnight  express  courier or mailed,  postage
prepaid, to Matthew S. Rogers, Canyon Security, L.L.C., 5725 N. Scottsdale Road,
Suite 190,  Scottsdale Arizona 85250, or such other address as Holder shall have
designated by written notice to the Company as provided herein. Notices or other
communications to the Company shall be deemed to have been sufficiently given if
delivered by hand, by facsimile transmission, or by overnight express courier or
mailed, postage prepaid, to the Company at 1719 W. University,  Suite 187, Tempe
85281,  or such other  address as the Company  shall have  designated by written
notice to such registered owner as herein provided. Notice shall be deemed given
(i) three business days after being deposited in the United States mail, postage
prepaid,  as herein  provided;  and (ii) one  business  day after  being sent by
overnight express courier or facsimile transmission.

         IN WITNESS  WHEREOF,  the Company has  executed  this Warrant as of the
31st day of May, 1996.



                                 M.D. LABS, INC.


                                 By:/s/ Hooman Nikzad
                                    --------------------------------------
                                    Hooman Nikzad, Chief Executive Officer
                                       18
<PAGE>
                                  PURCHASE FORM
                                  -------------


                                                     Dated:_____________________


                  The  undersigned  hereby  irrevocably  elects to exercise  the
within Warrant to the extent of purchasing __________ shares of Common Stock and
hereby  makes  payment of  $_________  in payment of the actual  exercise  price
thereof.



                                        ________________________________________
                                        Signature

- --------------------------------------------------------------------------------

                                 ASSIGNMENT FORM
                                 ---------------


                                                     Dated:_____________________


                  FOR VALUE RECEIVED,____________________________  hereby sells,
assigns,  and transfers  unto (Please type or print)  __________________________
(Please      type     or      print) address ___________________________________
_________________________ the right to purchase Common Stock represented by this
Warrant  to the  extent of  ___________________shares  as to which such right is
exercisable  and does  hereby  irrevocably  constitute  and  appoint the Company
and/or its  transfer  agent as attorney to transfer the same on the books of the
Company with full power of substitution in the premises.





                                       _________________________________________
                                       Signature
                                       19

THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED UNDER
THE SECURlTlES ACT OF 1933 AND HAVE BEEN TAKEN FOR lNVESTMENT  PURPOSES ONLY AND
NOT WITH A VIEW TO THE  DISTRIBUTION  THEREOF.  AND SUCH  SECURITIES  MAY NOT BE
OFFERED FOR SALE, SOLD, OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION  STATEMENT  MADE UNDER THE SECURITIES ACT OF 1933 OR PURSUANT TO AN
EXEMPTION FROM THE  REGISTRATION  AND PROSPECTUS  DELIVERY  REQUIREMENTS OF SUCH
ACT,  THE  EXISTENCE  OF WHICH  EXEMPTION  HAS BEEN  CONFIRMED  BY AN OPINION OF
COUNSEL  REASONABLY  ACCEPTABLE  TO THE  COMPANY  OR BY A NO  ACTION  LETTER  OR
INTERPRETIVE OPINION OF THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION. THE
TRANSFER OF THESE SECURITIES IS RESTRICTED AS DESCRIBED HEREIN.


                  Void after 5:00 p.m., Mountain Standard Time
                                 on May 31, 2001



                                 M.D. LABS, INC.

                          COMMON STOCK PURCHASE WARRANT






      This certifies  (that, for value received,  JBV Investments,  L.C., a Utah
limited liability company, or registered assigns (the "Holder"),  is irrevocably
entitled,  subject to the  provisions of this Warrant,  to purchase  Fifty Three
Thousand Eight Hundred Twenty-eight (53,828) shares, $0.001 par value per share,
of the  common  stock  (the  "Common  Stock")  of M.D.  Labs,  Inc.,  a Delaware
corporation  (the"Company"),  at a price of Three and 50/100 Dollars ($3.50) per
share.  The  exercise  price is subject to  adjustment  as provided in Section 6
below  (the  "Exercise  Price").  The  number of  shares  of Common  Stock to be
received  upon the  exercise of this  Warrant  (the  "Warrant  Shares")  and the
Exercise  Price may be adjusted from time to time as hereinafter  set forth.  In
addition, under certain circumstances as set forth herein, the Holder shall have
the right to require the Company to register the Warrant Shares.

      1. Exercise of Warrant.  This Warrant may be exercised in whole or in part
at any time or from time to time on or after the date  hereof,  but in any event
by no later than 5:00 p.m.,  Mountain  Standard Time, on May 31, 2001 (the fifth
anniversary  of the date  hereof)  or if such date is a day on which  federal or
state chartered banking institutions are authorized by law to close, then on the
next succeeding day which shall not be such a day, by presentation and surrender
thereof  to the  Company at its  principal  office or at the office of its stock
transfer  agent,  if any, the Purchase  Form  annexed  hereto duly  executed and
accompanied by payment, in cash or by certified or official bank check,  payable
to the order of the Company,  in the amount of the Exercise Price for the number
of Warrant  Shares  specified in such form,  together with all taxes  applicable
upon such  exercise.  Alternatively,  in the Holder's  discretion,  the Exercise
Price may be satisfied (i) by cancellation of indebtedness to Holder, or (ii) by
surrendering  to the  Company  the right to acquire a number of  Warrant  Shares
having a value in excess of their Exercise Price
                                        1
<PAGE>
equal to the  Exercise  Price of The  Warrant  Shares as to which the Warrant is
being  exercised.  If this Warrant should be exercised in part only, the Company
shall,  if this Warrant is surrendered for  cancellation,  execute and deliver a
new Warrant of the same tenor evidencing the right of the Holder to purchase the
balance of the  Warrant  Shares  purchasable  hereunder  upon the same terms and
conditions  as herein  set forth.  Upon and as of receipt by the  Company of the
Purchase  Form (in the form  attached  hereto) at the  office or stock  transfer
agent of the Company, in proper form for exercise, and accompanied by payment as
herein  provided  and  evidence  reasonably  satisfactory  to the Company of the
availability of an exemption from registration under applicable securities laws,
The  Holder  shall be deemed to be the  holder of record of the  Warrant  Shares
issuable upon such  exercise,  notwithstanding  that the stock transfer books of
the Company shall then be closed or that  certificates  representing such shares
of Common Stock shall not then be actually delivered to the Holder.

      2. Reservation of Shares.  The Company hereby covenants and agrees that at
all times during the period this Warrant is  exercisable  it shall  reserve from
its authorized and unissued Common Stock for issuance and delivery upon exercise
of this  Warrant  such number of shares of its Common Stock as shall be required
for issuance and delivery upon exercise of this Warrant. The Company agrees that
its issuance of this Warrant shall constitute full authority to its officers who
are charged with the duty of executing  stock  certificates to execute and issue
the necessary  certificates for shares of Common Stock upon the exercise of this
Warrant.

      3.  Fractional   Shares.  No  fractional  shares  or  stock   representing
fractional shares shall be issued upon the exercise of this Warrant.  In lieu of
any fractional  shares which would otherwise be issuable,  the Company shall pay
cash equal to the product of such  fraction  multiplied by the fair market value
of one share of Common  Stock on the date of  exercise,  as  determined  in good
faith by the Company's Board of Directors.

      4.   Exercise, Transfer. Exchange. Assignment or Loss of Warrant.

           (a) This Warrant may not be exercised, assigned or transferred except
as provided  herein and in accordance  with and subject to the provisions of the
Securities Act of 1933, as amended,  and the Rules and  Regulations  promulgated
thereunder  (said  Act  and  such  Rules  and  Regulations   being   hereinafter
collectively  referred to as the "Act").  Any  purported  transfer or assignment
made other than in accordance with this Section 4 and Section 10 hereof shall be
null and void and of no force and effect.

           (b) This Warrant shall be exercisable or  transferable  only upon the
opinion of  counsel  satisfactory  to the  Company,  to the effect  that (i) the
exercising party or the transferee is a person to whom the Warrant Shares may be
issued  or  the  Warrant  may  be  legally  transferred,  respectively,  without
registration  under the Act; and (ii) such exercise or transfer will not violate
any  applicable  law or  governmental  rule or  regulation  including,  .without
limitation,  any  applicable  federal  or  state  securities  law.  Prior to the
exercise,  transfer or assignment,  the exercising party, assignor or transferor
shall reimburse the Company for its reasonable  expenses,  including  attorneys"
fees, incurred in connection with the exercise, transfer or assignment.

           (c) Any assignment  permitted hereunder shall be made by surrender of
this Warrant to the Company at its  principal  office with the  Assignment  Form
annexed  hereto duly  executed and funds  sufficient to pay any transfer tat. In
such event, the Company shall, without charge,
                                        2
<PAGE>
execute  and  deliver a new  Warrant in the name of the  assignee  named in such
instrument  of  assignment  and this Warrant  shall  promptly be canceled.  This
Warrant  may be divided or  combined  with other  Warrants  which carry the same
rights upon presentation thereof at the principal office of the Company together
with a written  notice signed by the holder  thereof,  specifying  the names And
denominations  in which new Warrants are to be issued.  The terms  "Warrant" And
"Warrants"  as  used  herein  includes  any  Warrants  in  substitution  for  or
replacement  of this  Warrant,  or into  which  this  Warrant  may be divided or
exchanged.

           (d) Upon receipt by The Company of evidence satisfactory to it of the
loss,  theft,  destruction  or mutilation  of this Warrant,  and (in the case of
loss, theft or destruction) of reasonably satisfactory indemnification, and upon
surrender  and  cancellation  of this Warrant,  if  mutilated,  the Company will
execute  and  deliver a new  Warrant  of like  tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void. Any such new
Warrant  executed and  delivered  shall  constitute  an  additional  contractual
obligation  on the part of the  Company,  whether  or not the  Warrant  so lost,
stolen, destroyed or mutilated shall be at any time enforceable by anyone.

           (e) Each  holder of this  Warrant,  the  Warrant  Shares or any other
security  issued or issuable upon  exercise of this Warrant shall  indemnify and
hold unless the Company,  its directors and officers,  and each person,  if any,
who controls the Company,  against any losses,  claims,  damages or liabilities,
joint or several, to which the Company or any such director, officer or Any such
person may become  subject  under the Act or statute or common  law,  insofar as
such losses,  claims,  damages or  liabilities,  or actions in respect  thereof,
arise out of or are based upon the  disposition  by such Holder of The  Warrant,
the Warrant Shares or other such securities in violation of this Warrant.

      5.  Rights of the  Holder.  The Holder  shall not,  by virtue  hereof,  be
entitled to any rights of a shareholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.

      6. Adjustment of Exercise Price and Number of Shares.  The number and kind
of securities  issuable upon the exercise of this Warrant and the Exercise Price
of such  securities  shall be subject to  adjustment  from time to time upon the
happening of certain events as follows:

           (a)  Adjustment  for Dividends in Stock.  In case at any time or from
time to time,  on or after the date  hereof,  the holders of the Common Stock of
the Company (or any shares of stock or other  securities at the time  receivable
upon the  exercise of this  Warrant)  shall have  received,  or, on or after the
record date fixed for the  determination  of eligible  stockholders,  shall have
become entitled to receive,  without payment therefor, other or additional stock
of the  Company by way of  dividend,  then and in each case,  the Holder of this
Warrant shall, upon the exercise hereof, be entitled to receive,  in addition to
the number of shares of Common Stock receivable  thereupon,  and without payment
of any additional consideration therefor, the amount of such other or additional
stock of the Company  which such Holder would hold on the date of such  exercise
had it been the holder of record of such Common Stock on the date hereof and had
thereafter,  during the period from the date hereof to and including the date of
such exercise, retained such shares and/or all other additional stock
                                        3
<PAGE>
receivable  by  it as  aforesaid  during  such  period,  giving  effect  to  all
adjustments  called for during  such  period by  paragraphs  (a) and (b) of this
paragraph 6.

           (b) Adjustment for  Reclassification.  Reorganization  or Merger.  In
case of any  reclassification  or change of the  outstanding  securities  of the
Company or of any  reorganization  of the Company (or any other  corporation the
stock or  securities  of which are at the time  receivable  upon the exercise of
this  Warrant) on or after the date  hereof,  or in case,  after such date,  the
Company  (or any  such  other  corporation)  shall  merge  with or into  another
corporation  or  convey  all  or  substantially  all of its  assets  to  another
corporation,  then and in each such case the  Holder of this  Warrant,  upon the
exercise  hereof at any time after the  consummation  of such  reclassification,
change,  reorganization,  merger or conveyance, shall be entitled to receive, in
lieu of the stock or other securities and property  receivable upon the exercise
hereof prior to such consummation,,the  stock or other securities or property to
which such Holder would have been entitled upon such consummation if such Holder
had exercised this Warrant  immediately  prior  thereto,  all subject to further
adjustment as provided in paragraphs  (a) and (c); in each such case,  the terms
of this  paragraph  6 shall  be  applicable  to the  shares  of  stock  or other
securities  properly  receivable  upon the exercise of this  Warrant  after such
consummation.

           (c) Stock Splits and Reverse Stock Splits. If at any time on or after
the date hereof the Company  shall  subdivide its  outstanding  shares of Common
Stock into a greater number of shares,  the Exercise Price in effect immediately
prior to such  subdivision  shall  thereby be  proportionately  reduced  and the
number of Warrant Shares  receivable  upon exercise of the Warrant shall thereby
be proportionately  increased;  and, conversely,  if at any time on or after the
date hereof the  outstanding  number of shares of Common Stock shall be combined
into a smaller number of shares,  the Exercise Price in effect immediately prior
to such combination shall thereby be proportionately increased and the number of
Warrant  Shares  receivable  upon  exercise  of the  Warrant  shall  thereby  be
proportionately decreased.

      7.  Officer's  Certificate.  Whenever the Exercise Price or the Warrant or
Shares issuable on exercise of this Warrant shall be adjusted as required by the
provisions  of  Section 6 hereof,  the  Company  shall  forthwith  file with its
Secretary or an Assistant  Secretary at its principal office, and with its stock
transfer agent, if any, an officer's  certificate  showing the adjusted Exercise
Price and Warrant  Shares  determined  as herein  provided and setting  forth in
reasonable  detail the facts  requiring  such  adjustment.  Each such  officer's
certificate  shall be made available at all  reasonable  times for inspection by
the Holder, and the Company shall, forthwith after each such adjustment, deliver
a copy of such certificate to the Holder.

      8.   Registration Under Securities Act of 1933. as amended (the "Act"t.

      8.1  Certain  Other  Definitions.  As used in this Common  Stock  Purchase
Warrant, the following terms shall have the respective meanings:

           "Commission  " shall mean the United States  Securities  and Exchange
Commission and any successor federal agency having similar powers.

           "Initiating  holder"  shall  mean any Holder or  Holders,  as defined
herein, who or which, in the aggregate, own not less than 50.1% of the aggregate
number of Registrable Securities, as hereinafter defined, then existing.
                                        4
<PAGE>
           The  term  "majority  of  the  Registrable  Securities"  refers  to a
majority of the specified Registrable Securities.

           The  terms  "register"  "registered"  and  "registration"  refer to a
registration  effected  by  preparing  and filing a  registration  statement  in
compliance with the Act, and the declaration or ordering or the effectiveness of
such registration statement.

           "Registrable  Securities"  shall mean those Securities which have not
been  included  in a  registration  statement  deemed to be  effective  or those
Securities sold to the public.

           "Registration  Expenses"  shall  mean all  expenses  incurred  by the
Company in complying with this Section 8, including, without limitation, (i) all
registration  and filing fees,  printing  expenses,  fees and  disbursements  of
counsel for the Company (but not counsel retained by the Holders), blue sky fees
and expenses, and accountants' expenses including without limitation any special
audits or "comfort"  letters  incident to or required by any such  registration,
transfer taxes, fees of transfer agents and registrars,  costs of insurance, and
fees of the National Association of Securities Dealers,  Inc., and (ii) any fees
and  disbursements  of  underwriters  customarily  paid by issuers or sellers of
securities, but excluding underwriting discounts and commissions.

           "Securities"  shall mean the Common Stock,  as  hereinafter  defined,
subject to this Common Stock  Purchase  Warrant and to that certain Common Stock
Purchase  Warrant  issued to Canyon  Security,  L.L.C.,  together with any other
securities  which are hereafter  issued with respect thereto by way of exchange,
reclassification,  dividend or distribution, whether or not such securities have
been sold to the public.

           "Common Stock" shall mean all currently  outstanding shares of $0.001
par value per share common stock of the Company now issued and  outstanding  and
all shares hereafter issued and outstanding, as well as any securities hereafter
convertible into or exchangeable for shares of Common Stock of the Company.

      8.2  Registration on Demand.

           (a) Demand.  After  September I, 1997, and upon the written demand of
one  or  more  Initiating  Holders,  requesting  that  the  Company  effect  the
registration  under  the Act of up to fifty  percent  (50%!  of such  Initiating
Holder's Registrable Securities and specifying the intended method or methods of
disposition  thereof,  the Company will promptly,  but in any event within ten (
10) days, give written notice of such demanded  registration  to Holder,  or its
successors  and  assigns,  as the case may be,  and to the  other  acquirers  of
Registrable  Securities  (together with the Holder, the "Holders") and thereupon
will use its best efforts to effect the registration under the Act of:

                 (i) the  Registrable  Securities  which the Company has been so
           demanded to register by such  Initiating  Holder,  for disposition in
           accordance with the intended method or methods of disposition  stated
           in such demand,

                 (ii) all other  Registrable  Securities  which The  Company has
           been  demanded to register by the Holders  thereof by written  demand
           delivered  to the Company  within ten (10) days after  giving of such
           written notice by the Company (which request shall
                                        5
<PAGE>
           specify  the  intended  method  or  methods  of  disposition  of such
           Registrable Securities), and

                 (iii) all shares of Common Stock which the Company may elect to
           register   for  its  own   account   or  the   account(s)   of  other
           stockholder(s)   in  connection  with  the  offering  of  Registrable
           Securities pursuant to this Section 8.2,

all to the extent  requisite to permit the  disposition  (in accordance with the
intended  methods thereof as aforesaid) of the  Registrable  Securities so to be
registered,  provided that the Company shall not be required to effect more than
one ( I ) registration  pursuant to this Section 8.2. If, at the date of receipt
of  a  demand  by  Initiating   Holder,  the  Company  has  previously  filed  a
registration statement pursuant to the Act (otherwise than on Form S-4 or S-8 or
any similar  form for the  registration  of  securities  pursuant to an employee
benefit plan or business  combination or reorganization),  the Company may defer
the filing of any such demanded registration  statement to a date not later than
ninety (90) days after the effective date of such prior registration statement.

           (b)  Registration   Statement  Form.  I  Each  registration  demanded
pursuant to this  Section 8.2 shall be effected by the filing of a  registration
statement  on any form which the  Company is  eligible  to use,  such form to be
selected by the  Company,  after  consultation  with counsel and after notice of
such  selection  of such form is  delivered  to the  Holders of all  Registrable
Securities electing to participate in such registration; provided, however, that
if the Holders of at least a majority of the Registrable  Securities as to which
registration  has been  demanded  pursuant to this Section 8.2 shall so request,
the Company shall file such registration  statement pursuant to the Commission's
Rule 415,  or any  successor  rule or  regulation  thereto,  so as to permit the
continuous or delayed offering of the Registrable  Securities in accordance with
the intended method of disposition  specified in the Initiating  Holder's notice
pursuant  to  subsection  (a) of this  Section  8.2,  but in no event  shall the
Company be required to maintain the  effectiveness of such  registration  beyond
the period  specified in Section 8.4 (b). Such  selection of form by the Company
shall be final.

           (c) Expenses.  Except as otherwise  prohibited by applicable law, the
Company will pay all  Registration  Expenses in connection with the registration
of Registrable Securities requested pursuant to this Section 8.2.

           (d)  Effective  Registration   Statement.  A  registration  requested
pursuant  to this  Section  8.2  shall not be  deemed  to be  effected  unless a
registration  statement covering all shares of Registrable  Securities specified
in notices  received as described in subsection (a), for sale in accordance with
the method of disposition  specified by the Initiating  Holder,  shall have been
declared  effective by the Commission or otherwise becomes  effective;  provided
that a  registration  which  does not become  effective  after the  Company  has
substantially  prepared and has filed or is in a position to file a registration
statement with respect thereto solely by reason of the refusal to proceed of any
of the  Initiating  Holders  (other than any  refusal to proceed  based upon the
advice of their  counsel  that the  registration  statement,  or (he  prospectus
contained  therein,  contains an untrue statement of a material fact or omits to
slate a material  fact  required to be staled  therein or  necessary to make the
statements  therein not misleading in light of the circumstances  then existing)
shall be deemed to have been  effected  by the  Company  at the  request of such
Holder.
                                        6
<PAGE>
      8.3  Piggyback Registration Rights.

           (a) Right to Include Registrable  Securities.  If, at any time within
five (5) years from the date hereof, other than in connection with the Company's
initial  registration and offering of its securities to the public,  the Company
proposes to register any of its equity  securities under the Act, whether or not
for sale for its own  account,  on a form and in a  manner  which  would  permit
registration of Registrable  Securities for sale to the public under the Act, it
will,  each such  time,  unless  inclusion  of  Registrable  Securities  in such
registration is prohibited by the terms of a financing  transaction  pursuant to
which the Company raised gross  proceeds of at least $2 million,  give notice at
least  twenty  (20) days prior to the  proposed  filing  date to all  Holders of
Registrable Securities of its intention to do so, describing such securities and
specifying  the form and manner and the other  relevant  facts  involved in such
proposed registration and, upon the written request of any such Holder delivered
to the Company  within ten ( 10) days after the giving of any such notice (which
request shall specify the Registrable  Securities  intended to be disposed of by
such Holder and the  intended  method or methods of  disposition  thereof),  the
Company shall use its best efforts to effect the  registration  under the Act of
Registrable  Securities  which the Company has been requested to register by the
Holders of Registrable Securities  (hereinafter  "Requesting Holders"),  but not
exceeding  ten  percent  (10%)  of the  Registrable  Securities  to  the  extent
requisite to permit the  disposition  (in accordance  with the intended  methods
thereof as aforesaid) of the  Registrable  Securities  so to be  registered,  of
Those  Registrable  Securities  which the  Company is  requested  to register by
Holder up to ten percent (10%) of the Registrable Securities provided that:

                 (i) if, at any time after  giving such notice of its  intention
           to register any of its  securities and prior to the effective date of
           the   registration   statement   filed  in   connection   with   such
           registration,  the  Company  shall  determine  for any  reason nol to
           register  such  securities,  the Company may, al its  election,  give
           written  notice of such  determination  to each Holder of Registrable
           Securities  and  thereupon  shall be  relieved of its  obligation  to
           register  any   Registrable   Securities  in  connection   with  such
           registration (but not its obligation lo pay the Registration Expenses
           in connection therewith as provided in subsection (b) of this Section
           8.3),  without prejudice,  however,  to the rights of any one or more
           Holders to request that such registration be effected in a subsequent
           such registration;

                 (ii)  if (a)  the  registration  so  proposed  by  the  Company
           involves  an  underwritten   offering  of  The  securities  so  being
           registered to be distributed  by or through one or more  underwriters
           of recognized  standing under underwriting terms appropriate for such
           a  transaction,  (b) the Company  proposes that the  securities to be
           registered in such underwritten  offering will not include all of the
           Registrable  Securities  requested  to be so  included,  and  (c) the
           managing  underwriter of such underwritten  offering shall advise the
           Company in writing that, in its opinion, the distribution of all or a
           specified  portion of such Registrable  Securities  concurrently with
           the securities being distributed by such underwriters will materially
           and  adversely  affect the  distribution  of such  securities by such
           underwriters (such opinion to state the reasons  therefor),  then the
           Company  will  promptly  furnish  each  such  Holder  of  Registrable
           Securities  with a copy of such opinion and may  require,  by written
           notice  to each  such  Holder  accompanying  such  opinion,  that the
           distribution  of all  or a  specified  portion  of  such  Registrable
           Securities  be  excluded  from  such  distribution  (in  case  of  an
           exclusion of a portion of such Registrable  Securities,  such portion
           to be allocated among such Holders in proportion to the
                                        7
<PAGE>
           respective  numbers of shares of Registrable  Securities so requested
           to be registered by such  Holders);  provided,  however,  that if the
           Company  shall  require such a reduction,  the Holder of  Registrable
           Securities shall have the right to withdraw from the offering;

                 (iii)  the  Company  shall  not  be  obligated  to  effect  any
           registration  of  Registrable   Securities  under  this  Section  8.3
           incidental to the registration of any of its securities in connection
           with mergers,  acquisitions,  exchange offers,  dividend reinvestment
           plans or stock options or other employee  benefit plans or incidental
           to the registration of any non-equity securities not convertible into
           equity securities; and,

                 (iv) the number of shares of Registrable Securities which shall
           be  included in each such  registration  shall not exceed ten percent
           (10%) of the Registrable Securities.

      No registration of Registrable  Securities effected under this Section 8.3
shall  relieve  the  Company  of  its  obligation  to  effect  registrations  of
Registrable  Securities  upon the request of an  Initiating  Holder  pursuant to
Section 8.2.

           (b) Expenses.  Except as otherwise  prohibited by applicable law, the
Company will pay all  Registration  Expenses in connection with the registration
of Registrable Securities requested pursuant to this Section 8.3.

      8.4  Registration  Procedures.  If and whenever the Company is required to
use its best efforts to effect the  registration of any  Registrable  Securities
under the Act as provided in Section 8.2 and 8.3, the Company shall promptly:

           (a) use its best  efforts to prepare  and (in any event  within  (90)
days of the last date on which Holders of Registrable  Securities may notify the
Company  of their  request  to  include  their  Registrable  Securities  in such
registration  in  accordance  herewith or such  earlier  date as may be provided
elsewhere herein) file with the Commission a registration statement with respect
to  such  Registrable  Securities  and  use  its  best  efforts  to  cause  such
registration  statement  to become  effective  provided  that,  in the case of a
registration of any Registrable  Securities pursuant to Section 8.2 or 8.3, such
preparation and filing may be delayed if, in the good faith determination of the
Board of Directors of the Company,  such deferral  would be in the best interest
of the Company and such  deferral  would be without  material  prejudice  to the
rights  of  the  Holders  of   Registrable   Securities  to  request  that  such
registration be effected as a subsequent registration under Section 8.3;

           (b) use its best efforts to prepare and file with the Commission such
amendments  and  supplements to such  registration  statement and the prospectus
used in  connection  therewith  as may be  necessary  to keep such  registration
statement effective and to comply with the provisions of the Act with respect to
the disposition of all Registrable  Securities and other  securities  covered by
such  registration  statement  until  the  earlier  of such  time as all of such
Registrable  Securities and other securities have been disposed of in accordance
with the intended  methods of disposition  by the seller or sellers  thereof set
forth in such registration statement or the expiration of one ( I ) year (or, in
the case of  registration  of  Registrable  Securities  pursuant to Section 8.3,
ninety (90) days) after such registration statement becomes effective;  and will
furnish,  upon request,  to each such seller and each Requesting Holder prior to
the filing  thereof a copy of any amendment or  supplement to such  registration
statement or prospectus and shall not file any such amendment
                                        8
<PAGE>
or  supplement  to  which  any such  seller  or  Requesting  Holder  shall  have
reasonably  objected on the grounds that such  amendment or supplement  does not
comply in all material  aspects with the requirements of the Act or of the rules
or  regulations  thereunder  with regard lo  disclosure  concerning  a holder of
Registrable Securities;

           (c) furnish to each seller of such  Registrable  Securities  and each
Requesting Holder such number of conformed copies of such registration statement
and of each such  amendment and  supplement  thereto (in each case including all
exhibits), such number of copies of the prospectus included in such registration
statement (including each preliminary prospectus and any summary prospectus), in
conformity  with  the   requirements  of  the  Act,  such  documents,   if  any,
incorporated by reference in such registration statement or prospectus, and such
other documents, as such seller or Requesting Holder may reasonably request;

           (d) use its best  efforts  to  register  or qualify  all  Registrable
Securities and other  securities  covered by such  registration  statement under
such other  securities  or blue sky laws of the  States of the United  States as
each seller shall reasonably request, to keep such registration or qualification
in effect for so long as such registration  statement remains in effect,  and do
any and all other acts and things  which may be necessary or advisable to enable
such  seller  to  consummate  the  disposition  in  such  jurisdictions  of  its
Registrable Securities covered by such registration  statement,  except that the
Company  shall not for any such  purpose be required to qualify  generally to do
business  as a foreign  corporation  in any  jurisdiction  wherein it is not and
would not, but for the  requirements  of this subsection (d), be obligated to be
so qualified,  or to subject itself to taxation in any such jurisdiction,  or to
consent to general  service  of  process in any such  jurisdiction  or to obtain
clearance  in more than five (5) states if the Common Stock is not listed on the
Nasdaq National Market System;

           (e) upon  request,  use best  efforts to  furnish  to each  seller of
Registrable   Securities  and  each  Requesting  Holder  a  signed  counterpart,
addressed  to such  seller  and such  Requesting  Holder,  of (i) an  opinion of
counsel to the Company,  dated the effective date of such registration statement
(and, if such registration  includes an underwritten public offering,  dated the
date of the  closing  under the  underwriting  agreement),  and (ii) a "comfort"
letter,  signed by the  independent  public  accountants  who have certified the
Company's financial  statements included in such registration  statement,  dated
after  the  effective  date  of  such  registration   statement  (and,  if  such
registration statement includes an underwritten public offering,  dated the date
of the closing under the underwriting  agreement),  covering  substantially  the
same matters with respect to such  registration  statement  (and the  prospectus
included therein) and, in the case of such accountants'  letter, with respect to
events subsequent to the date of such financial  statements,  as are customarily
covered in opinions of issuer's counsel and in accountant's letters delivered to
underwriters in underwritten public offerings of securities;

           (f) immediately notify each seller of Registrable  Securities covered
by such  registration  statement and each Requesting  Holder, at any time when a
prospectus  relating  thereto is required to be  delivered  under the Act,  upon
discovery  that.  or upon the  happening of any event as a result of which,  the
prospectus included in such registration  statement, as then in effect, includes
an untrue  statement  of a  material  fact or omits to state any  material  fact
required to be stated  therein or necessary to make the  statements  therein not
misleading in light of the circumstances  then existing,  which untrue statement
or omission requires amendment of the registration  statement or supplementation
of the prospectus,  and at the request of any such seller or Requesting  Holder,
prepare and furnish to such seller and Requesting  Holder a reasonable number of
copies of a
                                        9
<PAGE>
supplement to or an amendment of such prospectus as may be necessary so that, as
thereinafter  delivered to the acquirers of such  Registrable  Securities,  such
prospectus  shall not include an untrue  statement of a material fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein  not  misleading  in the  light  of the  circumstances  then
existing;   provided,   however  that  each  Holder  of  Registrable  Securities
registered pursuant to such registration  statement agrees that such Holder will
not sell any  Registrable  Securities  pursuant to such  registration  statement
during the time that the Company is preparing  and filing with the  Commission a
supplement to or an amendment of such prospectus or registration statement;

           (g)  otherwise  use its best  efforts to comply  with all  applicable
rules and regulations of the Commission,  and make available to its Holders,  as
soon as reasonably practicable,  an earnings statement covering the period of at
least twelve (12) months, but not more than eighteen (18) months, beginning with
the first month of the first fiscal  quarter  after the  effective  date of such
registration statement, which earnings statement shall satisfy the provisions of
Section 11 (a) of the Act;

           (h) provide and cause to be maintained a transfer agent and registrar
for all Registrable  Securities covered by such registration  statement from and
after a date not later than the effective date of such  registration  statement:
and

           (i) use its best efforts to list all Registrable  Securities  covered
by such registration  statement on each securities  exchange on which any of the
Common Stock of the Company is then listed or, if the Company's  Common Stock is
not then quoted on NASDAQ or listed on any national securities exchange, use its
best efforts to have such Registrable  Securities  covered by such  registration
statement  quoted  on  NASDAQ  or, at the  option  of the  Company,  listed on a
national securities exchange.

The Company may require each seller of  Registrable  Securities  as to which any
registration is being effected to furnish the Company such information regarding
such seller and the distribution of such securities as the Company may from time
to time reasonably  request in writing and as shall be required by law or by the
Commission  in   connection   therewith  and  such  seller  shall  furnish  such
information.  If such information is not provided when requested, the Company in
its discretion may exclude the affected shares from registration.

      8.5 Underwritten Offerings.

           (a)  Underwritten  Offerings.  If the number of shares of Registrable
Securities  and any other  securities  to be sold in any  underwritten  offering
involves a registration  requested by Initiating Holders pursuant to Section 8.2
should be limited due to market  conditions  or  otherwise,  the  Company  shall
include in such registration to the extent of the number which the Company is so
advised can be sold in such offering (i) first, Registrable Securities requested
to be  included  in such  registration,  pro  rata  among  the  Holders  of such
Registrable  Securities on the basis of the number of shares of such  securities
requested  to be  included by such  Holders,  and (ii) other  securities  of The
Company  proposed to be included in such  registration,  in accordance  with the
priorities,  if any,  then  existing  among the  Company and the Holders of such
securities.

           (b) Underwriting  Agreement. If requested by the underwriters for any
underwritten offering of Registrable Securities on behalf of a Holder or Holders
of Registrable Securities
                                       10
<PAGE>
pursuant to a registration  requested  under Section 8.2, the Company will enter
into an underwriting  agreement  reasonably  acceptable to the Company with such
underwriters for such offering,  such agreement to contain such  representations
and  warranties  by the  Company  and such  other  terms and  provisions  as are
customarily contained in underwriting  agreements with respect to distributions,
including,  without  limitation,  indemnities  to the  effect  and to the extent
provided  in Section  8.7,  provided,  however,  that such  agreement  shall not
contain any provision  which is  inconsistent  with the provisions  hereof.  The
Holders of Registrable  Securities on whose behalf Registrable Securities are to
be distributed by such  underwriters  shall be parties to any such  underwriting
agreement and the representations and warranties by, and the other agreements on
the part of, the Company to and for the benefit of such underwriters  shall also
be made to and for the benefit of such Holders of Registrable  Securities.  Such
Holders of Registrable  Securities  shall not be required by the Company to make
any  representations  or  warranties  to or  agreements  with the Company or the
underwriters  other than  reasonable  representations,  warranties or agreements
(including indemnity agreements customary in secondary offerings) regarding such
Holder, such Holder's  Registrable  Securities and such Holder's intended method
or methods of disposition and any other representation required by law.

           (c)  Piggyback  Underwritten  Offerings.  If the  Company at any time
proposes to register  any of its  securities  under the Act as  contemplated  by
Section 8.3 and such  securities are to be distributed by or through one or more
underwriters,  the Company will use its best efforts, if requested by any Holder
of Registrable  Securities,  who requests piggyback  registration of Registrable
Securities in connection  therewith  pursuant to Section 8.3 to arrange for such
underwriters  to include the  Registrable  Securities  to be offered and sold by
such  Holder  among  the  securities  to  be  distributed  by  or  through  such
underwriters, provided that, for purposes of this sentence, "best efforts" shall
not require  the  Company to reduce the amount or sale price of such  securities
proposed  to be  distributed  by or through  such  underwriters.  The Holders of
Registrable  Securities to be distributed by such underwriters  shall be parties
to the underwriting  agreement between the Company and such underwriters and the
representations  and warranties by, and the other agreements on the part of, the
Company to and for the benefit of such  underwriters,  shall also be made to and
for the benefit of such Holders of Registrable Securities,  and the Company will
cooperate  with  such  Holders  of  Registrable  Securities  to the end that the
conditions   precedent  to  the  obligations  of  such  Holders  of  Registrable
Securities under such underwriting  agreement shall not include  conditions that
are not customary in underwriting  agreements  with respect to combined  primary
and secondary distributions and shall be otherwise satisfactory to such Holders.
Such Holders of Registrable  Securities  shall not be required by the Company to
make  representations  or  warranties  to  or  agreements  (including  customary
indemnity agreements) with the Company or the underwriters other than reasonable
representations,  warranties or agreements  regarding such Holder, such Holder's
Registrable   Securities  and  such  Holder's  intended  method  or  methods  of
distribution and any other representation required by law.

           (d)  Selection of  Underwriters.  Whenever a  registration  requested
pursuant  to  Section  8.2 is for an  underwritten  offering,  the  Holders of a
majority of the Registrable  Securities included in such registration shall have
the right to select the managing  underwriter(s)  to  administer  the  offering,
subject to the approval of the Company, which approval shall not be unreasonably
withheld.  If the Company at any time proposed to register any of its securities
under  the Act for  sale  for its own  account  and  such  securities  are to be
distributed  by or  through  one or  more  underwriters,  the  selection  of the
managing underwriter(s) shall be made by the Company and
                                       11
<PAGE>
notice of the  selection  thereof  delivered  to the Holders of all  Registrable
Securities eligible to participate in such registration.

           (e) Holdback Agreements.  If any registration pursuant to Section 8.2
or 8.3 shall be in connection with an underwritten public offering,  each Holder
of Registrable Securities agrees by acquisition of such Registrable  Securities,
if so required  by the  managing  underwriter,  not to effect any public sale or
distribution or Registrable Securities or other securities or the Company (other
than as part of such  underwritten  public offering) within seven (7) days prior
to the effective  date of such  registration  statement or one hundred  twenty (
120) days after the effective date of such registration statement.

      8.6  Preparation:   Reasonable  Investigation.   In  connection  with  the
preparation and filing of each registration  statement  registering  Registrable
Securities  under the Act,  the  Company  will give the  Holders of  Registrable
Securities on whose behalf such  Registrable  Securities are to be so registered
and the  underwriters,  if any, each  Requesting  Holder,  and their  respective
counsel and  accountants,  the  opportunity to participate in the preparation of
such registration statement,  each prospectus included therein or filed with the
Commission and each amendment thereof or supplement thereto,  and will give each
of them such access to its books and records and such  opportunities  to discuss
the  business  of the  Company  with its  officers  and the  independent  public
accountants  who have certified its financial  statements as shall be reasonably
necessary to conduct a reasonable  investigation  within the meaning of the Act.
To  minimize  disruption  and  expense to the  Company  during the course of the
registration  process,  sellers of  Registrable  Securities to be covered by any
such  registration  statement  shall  coordinate  their  investigation  and  due
diligence efforts hereunder and. to the extent  practicable,  will act through a
single set of counsel and a single set of accountants.

      8.7 Indemnification.

           (a)  Indemnification by the Company. In the event of any registration
of any  securities of the Company under the Act, the Company  shall,  and hereby
does,  hereby  indemnify  and  hold  harmless  in the  case of any  registration
statement  filed  pursuant  to  this  Section  8.2 or  8.3,  the  seller  of any
Registrable  Securities  covered by such registration  statement,  such seller's
directors,  trustees,  officers,  agents and  attorneys  each  other  person who
participates  as an underwriter  in the offering or sale of such  securities and
each other  person,  if any,  who controls  such seller or any such  underwriter
within the meaning of the Act against any losses, claims.  damages,  liabilities
or expenses,  joint or several, to which such seller or Requesting Holder or any
such  director  or officer or  participating  person or  controlling  person may
become  subject  under the Act or  otherwise,  insofar as such  losses,  claims,
damages,  liabilities or expenses (or actions or proceedings in respect thereof)
arise  out of or are based  Upon (x) any  untrue  statement  or  alleged  untrue
statement of any material fact  contained in any  registration  statement  under
which such securities were registered under the Act, any preliminary prospectus,
final prospectus or summary prospectus  contained  therein,  or any amendment or
supplement thereto, or any document  incorporated by reference therein,  (y) any
omission or alleged  omission to state  therein a material  fact  required to be
stated therein necessary to make the statements  therein not misleading,  or (z)
any failure by the Company timely to deliver a prospectus or otherwise to comply
with  applicable  securities  laws and the Company will  reimburse  such seller,
Requesting Holder and each such director,  Trustee,  officer,  agent,  attorney,
participating  person and controlling person for any legal or any other expenses
reasonably incurred by them in connection with investigating or defending
                                       12
<PAGE>
any such loss, claim, liability, action or proceeding, provided that the Company
shall not be liable in any such case to the extent  that any such  loss,  claim,
damage, liability or expense (or action or proceeding in respect thereof) arises
out of or is based upon an untrue  statement  or  alleged  untrue  statement  or
omission  or alleged  omission  made in such  registration  statement,  any such
preliminary  prospectus,  final  prospectus,  summary  prospectus,  amendment or
supplement in reliance upon and in conformity with information  furnished to the
Company by such seller or such Requesting Holder or any such director,  trustee,
officer, participating person or controlling person.

           (b)  Indemnification  by the Seller.  The Company may  require,  as a
condition to including  Registrable  Securities  in any  registration  statement
filed  pursuant to Section 8.2 or 8.3,  that the Company  shall have received an
undertaking  satisfactory to it from each prospective seller of such securities,
severally  and not jointly,  to indemnify  and hold harmless (in the same manner
and to the same extent as set forth in  subsection  (a) of this Section 8.7) the
Company each director of the Company, each officer of the Company who shall sign
such  registration  statement  and each other  person,  if any, who controls the
Company  within the meaning of the Act, and the Company's  agents and attorneys,
with respect to (i) any untrue  statement in or omission from such  registration
statement,  any preliminary  prospectus,  final prospectus or summary prospectus
included therein,  or any amendment or supplement  thereto, if such statement or
omission was made in reliance upon and in conformity with information  furnished
to the  Company  by such  seller or (ii) any  failure by such  seller  timely to
deliver a prospectus  or otherwise to comply with  applicable  securities  laws.
Such  indemnity  shall  remain  in  full  force  and  effect  regardless  of any
investigation made by or on behalf of the Company or any such director, officer,
agent, or attorney or controlling  person and shall survive the transfer of such
securities by such seller.

           (c) Notice of Claims.  etc.  Promptly after receipt by an indemnified
party of notice of the commencement of any action or any proceeding  involving a
claim  referred  to in the  preceding  subsections  of this  Section  8.7,  such
indemnified  party will, if a claim in respect  thereof is to be made against an
indemnifying  party,  give written notice to the latter of the  commencement  of
such action.  provided that the failure of any indemnified  party to give notice
as provided therein shall not relieve the indemnifying  party of its obligations
under the preceding  subsections of this Section 8.7,  except to the extent that
the indemnifying party is actually materially prejudiced by such failure to give
notice. In case such action is brought against an indemnified  party,  unless in
such indemnified party's reasonable judgement (i) a conflict of interest between
such indemnified and indemnifying parties may exist in respect of such claim, or
(ii) the  indemnified  party has available to it reasonable  defenses  which are
different from or additional to those available to the  indemnifying  party, the
indemnifying party shall be entitled to participate in and to assume the defense
thereof,  jointly with any other indemnifying party similarly  notified,  to the
extent  that  it  may  wish,  with  counsel  reasonably   satisfactory  to  such
indemnified  party,  and  after  notice  from  the  indemnifying  party  to such
indemnified  party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party shall not be liable to such indemnified  party for any legal
or other  defenses  subsequently  incurred by the latter in connection  with the
defense thereof other than reasonable  costs of  investigation.  Notwithstanding
the foregoing, in any such action, any indemnified party shall have the right to
retain its own counsel but the fees and  disbursements  of such counsel shall be
at the expense of such indemnified party unless (i) the indemnifying party shall
have railed to retain counsel for the indemnified  person as aforesaid,  or (ii)
the indemnifying  party and such indemnified party shall have mutually agreed to
the retention of such  counsel.  It is understood  that the  indemnifying  party
shall  not,  in  connection  with any  action  or  related  actions  in the same
jurisdiction, be liable for the fees and disbursements of more than one separate
firm qualified in
                                       13
<PAGE>
such jurisdiction to act as counsel for the indemnified  party. The indemnifying
party shall not be liable for any settlement of any proceeding  effected without
its  written  consent  but if settled  with such  consent or if there be a final
judgment for the  plaintiff,  the  indemnifying  party  agrees to indemnify  the
indemnified  party  from and  against  any loss or  liability  by reason of such
settlement or judgement. No indemnifying party shall, without the consent of the
indemnified party, consent to entry of any judgment or enter into any settlement
which  does not  include  as an  unconditional  term  thereof  the giving by the
claimant or plaintiff to such indemnified  party of a release from all liability
in respect to such claim or litigation.

           (d) Other Indemnification.  Indemnification similar to that specified
in  the   preceding   subsections   of  this   Section  8.7  (with   appropriate
modifications)  shall be given by the  Company  and each  seller of  Registrable
Securities with respect to any required  registration or other  qualification of
such  Registrable  Securities  under any federal or state law or  regulation  of
governmental authority other than the Act.

           (e) Contribution. If the indemnification provided for in this Section
8.7 is unavailable  or  insufficient  to hold harmless an  indemnified  party in
respect of any losses,  claims,  damages,  liabilities or expenses  described as
indemnifiable  pursuant to subsections (a) or (b), then each indemnifying  party
shall, in lieu of indemnifying such indemnified party,  contribute to the amount
paid or payable by such indemnified  party, as a result of such losses,  claims,
damages,  liabilities  or expenses in such  proportion as appropriate to reflect
the  relative  fault  or the  Company,  on the  one  hand,  or  such  seller  of
Registrable  Securities on the other hand. and to the parties'  relative intent,
knowledge,  access to  information  and  opportunity  to correct or prevent  any
untrue statement or omission giving rise to such indemnification obligation. The
Company and the Holder of Registrable Securities agree that it would not be just
and equitable if  contributions  pursuant to this subsection (e) were determined
by pro rata allocation  (even if Holders of Registrable  Securities were treated
as one entity for such ,purpose) or by any other method of allocation  which did
not take  account  of the  equitable  considerations  referred  to above in this
subsection  (e). No person guilty of fraudulent  misrepresentations  (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution  from any
person who is not guilty of such fraudulent misrepresentation .

           (f) Indemnification  Payments.  The indemnification  required by this
Section 8.7 shall be made by periodic  payments of the amount thereof during the
course of the  investigation  or defense,  as and when bills are received or any
expense, loss, damage or liability is incurred.

           (g) Limitation on Seller's  Payments.  Notwithstanding  any provision
hereof to the contrary,  the liability of any seller of  Registrable  Securities
under this Section 8.2 shall in no event  exceed the  proceeds  received by such
seller  from the sale of  Registrable  Securities  covered  by the  registration
statement giving rise to such liability.

      9.  Notices  to  Warrant  Holders.  So  long  as  this  Warrant  shall  be
outstanding  and  unexercised  (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the Company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization  of the  Company,  reclassification  of the capital  stock of the
Company,   consolidation   or  merger  of  the  Company  with  or  into  another
corporation, sale, lease or transfer of all or substantially all of the property
and assets of the Company to another corporation, or voluntary
                                       14
<PAGE>
or  involuntary  dissolution,  the Company  shall cause to be  delivered  to the
Holder,  at least ten days prior to the date  specified in (a) or (b) below,  as
the case may be, a notice  containing a brief description of the proposed action
and  stating  the date on which (a) a record is to be taken for the  purpose  of
such  dividend,   distribution   or  rights,   or  (b)  such   reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.

      10. Transfer to Comply with the Securities Act of 1933.

           (a) This Warrant and the Warrant Shares or any other security  issued
or issuable  upon  exercise  of this  Warrant  may not be sold,  transferred  or
otherwise  disposed  of  except  to a person  who,  in the  opinion  of  counsel
reasonably satisfactory to the Company, is a person to whom this Warrant or such
Warrant Stock may legally be  transferred  pursuant to Section 4 hereof  without
registration and without the delivery of a current prospectus under the Act with
respect  thereto and then only against receipt of an agreement of such person to
comply with the  provision  of this  Section I 1) with  respect to any resale or
other  disposition of such  securities  unless,  in the opinion of such counsel,
such agreement is not required.

           (b) The  Company  may cause the  following  legend to be set forth on
each  certificate  representing  Warrant Shares or any other security  issued or
issuable upon exercise of this Warrant not theretofore distributed to the public
or sold to underwriters for  distribution to the public,  unless counsel for the
Company  is of the  opinion  as to any such  certificate  that  such  legend  is
unnecessary:

The securities represented by this certificate may not be offered for sale, sold
or otherwise transferred except pursuant to an effective  registration statement
made under the Securities  Act of 1933 (the "Act"),  or pursuant to an exemption
from registration  under the Act, the availability of which is to be established
to the satisfaction of the Company.

      11.  Governing  Law.  This Warrant  shall be governed by, and construed in
accordance  with,  the laws of the  State of  Arizona  applicable  to  contracts
entered into and to be performed wholly within such State.

      12.  Attorney  Review.  The  Company has had this  Common  Stock  Purchase
Warrant  reviewed by an attorney  independent  of Holder and  independent of any
counsel which may have represented Holder.

      13. Notice.  Notices and other communications to be given to the Holder of
the Warrants  evidenced  by this  certificate  shall be  delivered  by hand,  by
facsimile  transmission,  or by  overnight  express  courier or mailed,  postage
prepaid,  to James B. Van Treese,  JBV  Investments,  L.C., 6906 South 300 West,
Salt  Lake  City,  Utah  84047,  or such  other  address  as Holder  shall  have
designated by written notice to the Company as provided herein. Notices or other
communications to the Company shall be deemed to have been sufficiently given if
delivered by hand, by facsimile transmission, or by overnight express courier or
mailed, postage prepaid, to the Company at 1719 W. University,  Suite 187, Tempe
85281, or such other address as the Company shall have
                                       15
<PAGE>
designated by written notice to such registered owner as herein provided. Notice
shall be deemed  given (i) three  business  days after  being  deposited  in the
United States mail, postage prepaid,  as herein provided;  and (ii) one business
day after being sent by overnight express courier or facsimile transmission.

      IN WlTNESS  WHEREOF.  the Company has executed this Warrant as of the 31st
day of May, 1996.


                                      M D. LABS, INC.



                                      By:/s/ Hooman Nikzad
                                         ---------------------------------------
                                         Hooman Nikzad, Chief  Executive Officer

                                       16
<PAGE>
                                  PURCHASE FORM
                                  -------------


                                                       Dated:___________________



                     The undersigned  hereby  irrevocably elects to exercise the
within  Warrant  to the  extent of  purchasing________________  shares of Common
Stock and hereby makes payment of $_______  
_____________________  in payment of the actual exercise price thereof.




                                ------------------------------------------------
                                Signature


- --------------------------------------------------------------------------------


                                 ASSIGNMENT FORM
                                 ---------------

                                         Dated:_________________________________


         FOR VALUE RECEIVED, _____________________________________ hereby sells,

assigns, and transfers unto (Please type or print)______________________________

____________________, (Please type or print) address____________________________

______________________________________________the right to purchase Common Stock


represented by this Warrant to the extent of _______________  shares as to which
such right is exercisable and does hereby irrevocably constitute and appoint the
Company  and/or its transfer  agent as attomey to transfer the same on the books
of the Company with full power of substitution in the premises.




                                          --------------------------------------
                                          Signature
                                       17

THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933 AND HAVE BEEN TAKEN FOR INVESTMENT  PURPOSES ONLY AND
NOT WITH A VIEW TO THE  DISTRIBUTION  THEREOF,  AND SUCH  SECURITIES  MAY NOT BE
OFFERED FOR SALE, SOLD, OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION  STATEMENT  MADE UNDER THE SECURITIES ACT OF 1933 OR PURSUANT TO AN
EXEMPTION FROM THE  REGISTRATION  AND PROSPECTUS  DELIVERY  REQUIREMENTS OF SUCH
ACT,  THE  EXISTENCE  OF WHICH  EXEMPTION  HAS BEEN  CONFIRMED  BY AN OPINION OF
COUNSEL  REASONABLY  ACCEPTABLE  TO THE  COMPANY  OR BY A NO  ACTION  LETTER  OR
INTERPRETIVE OPINION OF THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION. THE
TRANSFER OF THESE SECURTIES IS RESTRICTED AS DESCRIBED HEREIN.

                  Void after 5:00 p.m., Mountain Standard Time
                                 on May 31, 2001

                                 M.D. LABS, INC.

                          COMMON STOCK PURCHASE WARRANT

         This  certifies  that,  for value  received,  Capital  West  Investment
Holding  Company,  Inc.,  an Arizona  corporation,  or  registered  assigns (the
"Holder"),  is entitled,  subject to the provisions of this Warrant, to purchase
Ten Thousand  Seven  Hundred  Sixty-five  (10,765)  shares,  $0.001 par vaue per
share, of the common stock (the "Common  Stock") of M.D. Labs,  Inc., a Delaware
corporation (the "Company"), at a price per share equal to the selling price per
share  set for  Common  Stock  offered  at such  time as the  Company  initially
registers Common Stock under the Securities Act of 1933, as amended, for sale to
the public. The exercise price is subject to adjustment as provided in Section 6
below  (the  "Exercise  Price").  The  number of  shares  of Common  Stock to be
received  upon the  exercise of this  Warrant  (the  "Warrant  Shares")  and the
Exercise Price may be adjusted from time to time as hereinafter set forth.

         1. Exercise of Warrant. Subject to the provisions of Section 11 hereof,
this  Warrant may be  exercised  in whole or in part at any time or from time to
time on or after the date  hereof,  but in any event by no later than 5:00 p.m.,
Mountain  Standard  Time,  on May 31,  2001 (the fifth  anniversary  of the date
hereof)  or if such date is a day on which  federal or state  chartered  banking
institutions  are  authorized by law to close,  then on the next  succeeding day
which  shall not be such a day, by  presentation  and  surrender  thereof to the
Company at its principal office or at the office of its stock transfer agent, if
any, the Purchase Form annexed hereto duty executed and  accompanied by payment,
in cash or by  certified  or official  bank  check,  payable to the order of the
Company,  in the amount of the Exercise  Price for the number of Warrant  Shares
specified in such form,  together with all taxes  applicable upon such exercise.
Alternatively,  in the Holder's discretion,  the Exercise Price may be satisfied
(i) by cancellation  of  indebtedness to Holder,  or (ii) by surrendering to the
Company the right to acquire a number of Warrant Shares having a value in excess
of their  Exercise Price equal to the Exercise Price of the Warrant Shares as to
which the Warrant is being  exercised.  If this  Warrant  should be exercised in
part only, the Company shall, if this Warrant is surrendered
<PAGE>
for cancellation, execute and deliver a new Warrant of the same tenor evidencing
the  right  of  the  Holder  to  purchase  the  balance  of the  Warrant  Shares
purchasable  hereunder  upon the same terms and  conditions as herein set forth.
Upon and as of receipt by the Company of the Purchase Form (in the form attached
hereto) at the office or stock transfer agent of the Company, in proper form for
exercise,  and accompanied by payment as herein provided and evidence reasonably
satisfactory   to  the  Company  of  the   availability  of  an  exemption  from
registration under applicable  securities laws, the Holder shall be deemed to be
the  holder  of record  of the  Warrant  Shares  issuable  upon  such  exercise,
notwithstanding  that the stock  transfer  books of the  Company  shall  then be
closed or that  certificates  representing such shares of Common Stock shall not
then be actually delivered to the Holder.

         2. Reservation of Shares.  The Company hereby covenants and agrees that
at all times during the period this Warrant is exercisable it shall reserve from
its authorized and unissued Common Stock for issuance and delivery upon exercise
of this  Warrant  such number of shares of its Common Stock as shall be required
for issuance and delivery upon exercise of this Warrant. The Company agrees that
its issuance of this Warrant shall constitute full authority to its officers who
are charged with the duty of executing  stock  certificates to execute and issue
the necessary  certificates for shares of Common Stock upon the exercise of this
Warrant.

         3.  Fractional  Shares.  No  fractional  shares  or stock  representing
fractional shares shall be issued upon the exercise of this Warrant.  In lieu of
any fractional  shares which would otherwise be issuable,  the Company shall pay
cash equal to the product of such  fraction  multiplied by the fair market value
of one share of Common  Stock on the date of  exercise,  as  determined  in good
faith by the Company's Board of Directors.

         4. Exercise, Transfer, Exchange, Assignment or Loss of Warrant.

                  (a) This Warrant may not be exercised, assigned or transferred
except as provided  herein and in accordance  with and subject to the provisions
of the  Securities  Act of 1933,  as  amended,  and the  Rules  and  Regulations
promulgated   thereunder  (said  Act  and  such  Rules  and  Regulations   being
hereinafter  collectively  referred to as the "Act").  Any purported transfer or
assignment  made other than in  accordance  with this  Section 4 and  Section 10
hereof shall be null and void and of no force and effect.

                  (b) This Warrant shall be  exercisable  or  transferable  only
upon the opinion of counsel  satisfactory to the Company, to the effect that (i)
the  exercising  party or the  transferee is a person to whom the Warrant Shares
may be issued or the Warrant may be legally transferred,  respectively,  without
registration  under the Act; and (ii) such exercise or transfer will not violate
any  applicable  law or.  governmental  rule or  regulation  including,  without
limitation,  any  applicable  federal  or  state  securities  law.  Prior to the
exercise,  transfer or assignment,  the exercising party, assignor or transferer
shall reimburse the Company for its reasonable  expenses,  including  attorneys'
fees, incurred in connection with the exercise, transfer or assignment.
                                        2
<PAGE>
                  (c)  Any  assignment  permitted  hereunder  shall  be  made by
surrender  of this  Warrant to the  Company  at its  principal  office  with the
Assignment  Form annexed  hereto duly  executed and funds  sufficient to pay any
transfer tax. In such event,  the Company  shall,  without  charge,  execute and
deliver a new Warrant in the name of the assignee  named in such  instrument  of
assignment  and this Warrant shall  promptly be  cancelled.  This Warrant may be
divided or  combined  with  other  Warrants  which  carry the same  rights  upon
presentation  thereof at the  principal  office of the Company  together  with a
written  notice  signed  by  the  Holder  thereof,   specifying  the  names  and
denominations  in which new Warrants are to be issued.  The terms  "Warrant" and
"Warrants"  as  used  herein  includes  any  Warrants  in  substitution  for  or
replacement  of this  Warrant,  or into  which  this  Warrant  may be divided or
exchanged.

                  (d) Upon receipt by the Company of evidence satisfactory to it
of the loss,  theft,  destruction  or mutilation of this Warrant,  at-id (in the
case of loss, theft or destruction) of reasonably satisfactory  indemnification,
and upon surrender and cancellation of this Warrant,  if mutilated,  the Company
will execute and deliver a new Warrant of like tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void. Any such new
Warrant  executed and  delivered  shall  constitute  an  additional  contractual
obligation  on the part of the  Company,  whether  or not the  Warrant  so lost,
stolen, destroyed or mutilated shall be at any time enforceable by anyone.

                  (e) Each Holder of this  Warrant,  the  Warrant  Shares or any
other security  issued or issuable upon exercise of this Warrant shall indemnify
and hold harmless the Company,  its directors and officers,  and each person, if
any,  who  controls  the  Company,   against  any  losses,  claims,  damages  or
liabilities,  joint or  several,  to which  the  Company  or any such  director,
officer or any such person may become subject under the Act or statute or common
law,  insofar as such  losses,  claims,  damages or  liabilities,  or actions in
respect  thereof,  arise out of or are based upon the disposition by such Holder
of the Warrant, the Warrant Shares or other such securities in violation of this
Warrant.

         5. Rights of  the Holder.  The Holder shall not, by virtue  hereof,  be
entitled to any rights of a shareholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.

         6.  Adjustment of Exercise  Price and Number of Shares.  The number and
kind of  securities  issuable upon the exercise of this Warrant and the Exercise
Price of such  securities  shall be subject to adjustment from time to time upon
the happening of certain events as follows:

                  (a) Adjustment for Dividends in Stock.  In case at any time or
from time to time, on or after the date hereof,  the holders of the Common Stock
of the  Company  (or any  shares  of  stock  or  other  securities  at the  time
receivable  upon the exercise of this Warrant)  shall have  received,  or, on or
after the record  date fixed for the  determination  of  eligible  stockholders,
shall have become  entitled  to  receive,  without  payment  therefor,  other or
additional  stock of the Company by way of dividend,  then and in each case, the
Holder of this Warrant shall,  upon the exercise hereof, be entitled to receive,
in addition to the number of shares of Common Stock receivable thereupon, and
                                        3
<PAGE>
without  payment of any additional  consideration  therefor,  the amount of such
other or  additional  stock of the Company  which such Holder would hold on tile
date of such  exercise  had it been the holder of record of such Common Stock on
the date  hereof and had  thereafter,  during the period from the date hereof to
and including the date of such  exercise,  retained such shares and/or all other
additional stock receivable by it as aforesaid during such period, giving effect
to all  adjustments  called for during such period by paragraphs  (a) and (b) of
this paragraph 6.

                  (b) Adjustment for Reclassification. Reorganization or Merger.
In case of any  reclassification or change of the outstanding  securities of the
Company or of any  reorganization  of the Company (or any other  corporation the
stock or  securities  of which are at the time  receivable  upon the exercise of
this  Warrant) on or after the date  hereof,  or in case,  after such date,  the
Company  (or any  such  other  corporation)  shall  merge  with or into  another
corporation  or  convey  all  or  substantially  all of its  assets  to  another
corporation,  then and in each such case the  Holder of this  Warrant,  upon the
exercise  hereof at any time after the  consummation  of such  reclassification.
change,  reorganization,  merger or conveyance, shall be entitled to receive, in
lieu of the stock or other securities and property  receivable upon the exercise
hereof prior to such consummation,  the stock or other securities or property to
which such Holder would have been entitled upon such consummation if such Holder
had exercised this Warrant  immediately  prior  thereto,  all subject to further
adjustment as provided in paragraphs  (a) and (c); in each such case,  the terms
of this  paragraph  6 shall  be  applicable  to the  shares  of  stock  or other
securities  properly  receivable  upon the exercise of this  Warrant  after such
consummation.

                  (c) Stock Splits and Reverse Stock  Splits.  If at any time on
or after the date hereof the Company shall subdivide its  outstanding  shares of
Common  Stock into a greater  number of  shares,  the  Exercise  Price in effect
immediately prior to such subdivision shall thereby be  proportionately  reduced
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be  proportionately  increased;  and,  conversely,  if at any time on or
after the date hereof the outstanding  number of shares of Common Stock shall be
combined  into a  smaller  number  of  shares,  the  Exercise  Price  in  effect
immediately prior to such combination shall thereby be proportionately increased
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be proportionately decreased.

         7. Officer's Certificate. Whenever the Exercise Price or the Warrant or
Shares issuable on exercise of this Warrant shall be adjusted as required by the
provisions  of  Section 6 hereof,  the  Company  shall  forthwith  file with its
Secretary or an Assistant  Secretary at its principal office, and with its stock
transfer agent, if any, an officer's  certificate  showing the adjusted Exercise
Price and Warrant  Shares  determined  as herein  provided and setting  forth in
reasonable  detail the facts  requiring  such  adjustment.  Each such  officer's
certificate  shall be made available at all  reasonable  times for inspection by
the Holder, and the Company shall, forthwith after each such adjustment, deliver
a copy of such certificate to the Holder.

         8.  Notices  to  Warrant  Holders.  So long as this  Warrant  shall  be
outstanding  and  unexercised  (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the Company shall offer to
the holders of Common Stock for subscription or

                                        4
<PAGE>
purchase by them any shares of stock of any class or any other rights,  or (iii)
in the event of any capital  reorganization of the Company,  reclassification of
the capital stock of the Company, consolidation or merger of the Company with or
into another corporation, sale, lease or transfer of all or substantially all of
the property and assets of the Company to another  corporation,  or voluntary or
involuntary dissolution,  the Company shall cause to be delivered to the Holder,
at least ten days prior to the date  specified in (a) or (b) below,  as the case
may be, a notice  containing  a brief  description  of the  proposed  action and
stating  the date on which (a) a record is to be taken for the  purpose  of such
dividend, distribution or rights, or (b) such reclassification,  reorganization,
consolidation, merger, conveyance, lease, dissolution, liquidation or winding up
is to take place and the date,  if any, is to be fixed,  as of which the holders
of Common Stock of record  shall be entitled to exchange  their shares of Common
Stock for securities or other property  deliverable upon such  reclassification,
reorganization,  consolidation,  merger, conveyance, dissolution, liquidation or
winding up.

         9. Transfer to Comply with the Securities Act of 1933.

                  (a) This Warrant and the Warrant  Shares or any other security
issued or issuable upon exercise of this Warrant may not be sold, transferred or
otherwise  disposed  of  except  to a person  who,  in the  opinion  of  counsel
reasonably satisfactory to the Company, is a person to whom this Warrant or such
Warrant Stock may legally be  transferred  pursuant to Section 4 hereof  without
registration and without the delivery of a current prospectus under the Act with
respect  thereto and then only against receipt of an agreement of such person to
comply with the  provision of this Section 9 with respect to any resale or other
disposition  of such  securities  unless,  in the opinion of such counsel,  such
agreement is not required; or

                  (b) The Company may cause the following legend to be set forth
on each certificate  representing Warrant Shares or any other security issued or
issuable upon exercise of this Warrant not theretofore distributed to the public
or sold to underwriters for  distribution to the public,  unless counsel for the
Company  is of the  opinion  as to any such  certificate  that  such  legend  is
unnecessary:

                  The  securities  represented  by this  certificate  may not be
                  offered  for  sale,  sold  or  otherwise   transferred  except
                  pursuant to an effective registration statement made under the
                  Securities  Act  of  1933  (the  "Act"),  or  pursuant  to  an
                  exemption from registration under the Act, the availability of
                  which is to be established to the satisfaction of the Company.

         10.  Governing Law. This Warrant shall be governed by, and construed in
accordance  with,  the laws of the  State of  Arizona  applicable  to  contracts
entered into and to be performed wholly within such State.

         11. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by  overnight  express  courier or mailed,  postage
prepaid, to Lawrence Kohler, Capital West Investment Holding

                                        5
<PAGE>
Company,  Inc., 2525 E. Camelback Road,  Suite 510,  Phoenix,  Arizona 85016, or
such other  address as Holder  shall have  designated  by written  notice to the
Company as provided herein.  Notices or other communication to the Company shall
be deemed to have been  sufficiently  given if delivered  by hand,  by facsimile
transmission, or by overnight express courier or mailed, postage prepaid, to the
Company at 1719 W. University,  Suite 187, Tempe 85281, or such other address as
the Company shall have designated by written notice to such registered  owner as
herein  provided.  Notice  shall be deemed given (i) three  business  days after
being deposited in the United States mail, postage prepaid,  as herein provided;
and (ii) one  business  day after  being sent by  overnight  express  courier or
facsimile transmission.



         IN WITNESS  WHEREOF,  the Company has  executed  this Warrant as of the
31st day of May, 1996.





                                    M.D. LABS, INC.

                                    By: Hooman Nikzad
                                      ----------------------------------------
                                        Hooman Nikzad, Chief Executive Officer
                                        6
<PAGE>
                                  PURCHASE FORM
                                  -------------


                                                        Dated: _________________


The undersigned  hereby irrevocably elects to exercise the within Warrant to the
extent of  purchasing  ______________  shares of Common  Stock and hereby  makes
payment of $ ____________ in payment of the actual exercise price thereof.



                                             ___________________________________
                                                     Signature



- --------------------------------------------------------------------------------
                                 ASSIGNMENT FORM
                                 ---------------


                                                 Dated:_________________________


                  FOR  VALUE   RECEIVED,   ____________________   hereby  sells,
assigns,  and transfers unto (Please type or print)  _________________,  (Please
type or print)  address  __________________  the right to purchase  Common Stock
represented by this Warrant to the extent of ________________ shares as to which
such right is exercisable and does hereby irrevocably constitute and appoint the
Company  and/or its transfer agent as attorney to transfer the same on the books
of the Company with full power of substitution in the premises.



                                             ___________________________________
                                                     Signature


                                        7

THESE  SECURITIES HAVE NOT BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS
AMENDED  (THE  "ACT"),  OR  UNDER  THE  SECURITIES  LAWS OF ANY  STATE  OR OTHER
JURISDICTION  ("BLUE SKY LAWS"), AND CANNOT BE RESOLD UNLESS THEY ARE REGISTERED
UNDER  THE ACT AND  ANY  APPLICABLE  BLUE  SKY  LAWS,  UNLESS  AN  EXEMPTION  IS
AVAILABLE.  THE  SECURITIES  REPRESENTED  BY THIS WARRANT HAVE BEEN ACQUIRED FOR
INVESTMENT  AND  NOT  WITH A  VIEW  TO,  OR IN  CONNECTION  WITH,  THE  SALE  OR
DISTRIBUTION THEREOF.

                                 M.D. LABS, INC.

                             STOCK PURCHASE WARRANT

                      WARRANT TO PURCHASE 45,000 SHARES OF
                        COMMON STOCK AS DESCRIBED HEREIN


Dated: June 3, 1996

                                     This certifies that, for value received:

                  Name:             Vincent Andrich

                  Address:          9421 Mission Lane #212
                                    Scottsdale, Arizona  85251
                                    602-616-4231


is  entitled to purchase  from M.D.  Labs,  Inc.,  a Delaware  corporation  (the
"Company"),  having its principal  office at 1719 W.  University Dr., Suite 187,
Tempe, Arizona 85281,  Forty-Five Thousand (45,000) fully paid and nonassessable
shares of Common Stock,  par value $.001,  of the Company (the "Common  Stock"),
subject to the terms set forth herein, at an exercise price of Three Dollars and
Fifty  Cents  ($3.50) per share,  subject to  adjustment  as provided  elsewhere
herein (the  "Warrant  Price").  The holder of this Warrant shall be referred to
herein as the "Warrantholder" or the "Holder."

         1. "Common  Stock." If at any time, as a result of an  adjustment  made
pursuant to Section , the securities or other property  obtainable upon exercise
of this Warrant  shall include  shares or other  securities of the Company other
than  common  stock or  securities  of another  corporation  or other  property,
thereafter  the number of such other shares or other  securities  or property so
obtainable  shall be subject to adjustment  from time to time in a manner and on
terms as nearly  equivalent as practicable to the provisions with respect to the
Common  Stock  contained in Section , and all other  provisions  of this Warrant
with  respect to the Common  Stock  shall  apply on like terms to any such other
shares or other securities or property. Subject to the
<PAGE>
foregoing,  and unless the context requires otherwise,  all references herein to
"Common  Stock" shall,  in the event of an  adjustment  pursuant to Section , be
deemed to refer as well to any other securities or property then obtainable as a
result of such adjustments.

         2. Exercise of Warrant. The purchase rights represented by this Warrant
may be  exercised  by the  Warrantholder  or its  duly  authorized  attorney  or
representative,  in whole or in part (but not as to a fractional share of Common
Stock),  at any time and from time to time during the period  commencing  on the
date of this  Warrant  (the  "Commencement  Date")  and  expiring  at 5:00 p.m.,
Mountain  Standard Time,  June 2, 2001 (the  "Expiration  Date")(or such earlier
date as may be provided pursuant to Section 9 herein),  or if such date is a day
on which federal or state chartered  banking  institutions are authorized by law
to close,  then on the next  succeeding  day which shall not be such a day, upon
presentation of this Warrant at the principal  office of the Company,  or at the
office of its stock  transfer  agent,  if any,  with the purchase  form attached
hereto duly completed and signed,  and upon payment to the Company in cash or by
certified  check or bank draft of an amount  equal to the number of shares being
so purchased multiplied by the Warrant Price, together with all taxes applicable
upon such exercise. The Company agrees that the Warrantholder will be deemed the
record owner of such shares as of the close of business on the date on which the
Warrant  shall have been  presented  and  payment  shall have been made for such
shares as  aforesaid.  Certificates  for the shares of Common Stock so purchased
shall be delivered to the Warrantholder  within a reasonable time, not exceeding
20 days, after the exercise in full of the rights represented by this Warrant.

         If the  Warrant is  exercised  in part only,  the Company  shall,  upon
surrender of this Warrant for cancellation, deliver a new Warrant evidencing the
rights of the  Warrantholder  to  purchase  the  balance of the shares of Common
Stock which the Warrantholder is entitled to purchase hereunder.

         3. Vesting Schedule.  Subject to Section 9 herein,  the purchase rights
represented by this Warrant shall become exercisable  according to the following
schedule: warrants to acquire 10,000 shares of Common Stock shall be exercisable
commencing June 3, 1997; warrants to acquire 15,000 shares of Common Stock shall
be exercisable commencing June 3, 1998; and warrants to acquire 20,000 shares of
Common Stock shall be exercisable commencing June 3, 1999.

         4. Certain Adjustments to Warrant.

                  (a) In case the Company  shall (i) pay a dividend in shares of
Common Stock or make a  distribution  in shares of Common Stock,  (ii) subdivide
its outstanding  shares of Common Stock, (iii) combine its outstanding shares of
Common  Stock into a smaller  number of shares of Common  Stock or (iv) issue by
reclassification  of its shares of Common Stock other securities of the Company,
the number of shares of Common Stock  purchasable  upon exercise of this Warrant
immediately prior thereto shall be adjusted so that the  Warrantholder  shall be
entitled  to  receive  the kind and  number of  shares of Common  Stock or other
securities  of the  Company  which he would have owned or have been  entitled to
receive at the happening of any
                                        2
<PAGE>
of the events described above, had such Warrant been exercised immediately prior
to the  happening  of such event or any record  date with  respect  thereto.  An
adjustment   made  pursuant  to  this  paragraph  (a)  shall  become   effective
immediately  after the effective  date of such event  retroactive  to the record
date, if any, for such event.

                  (b) Whenever the number of shares of Common Stock  purchasable
upon the exercise of this Warrant is adjusted,  as herein provided,  the Warrant
Price shall be adjusted by multiplying such Warrant Price  immediately  prior to
such  adjustment by a fraction,  of which the  numerator  shall be the number of
shares of Common Stock purchasable upon the exercise of this Warrant immediately
prior to such  adjustment,  and of which the denominator  shall be the number of
shares of Common Stock so purchasable immediately thereafter.

                  (c) In the event of any adjustment  pursuant to this Section ,
no  fractional  shares of Common  Stock shall be issued in  connection  with the
exercise of any  Warrants,  but the Company  shall,  in lieu of such  fractional
shares, make such cash payment therefor on the basis of the current market price
on the day immediately prior to exercise.

                  (d)  Irrespective of any adjustments  pursuant to this Section
to the Warrant Price or to the number of shares or other  securities  obtainable
upon  exercise of this  Warrant,  this Warrant may continue to state the Warrant
Price and the number of shares  obtainable upon exercise,  as the same price and
number of shares stated herein.

         5. Merger; Change in Control.

                  (a) Change in Control  shall be deemed to have occurred if (i)
any  "person"  (as  such  term is used in  Paragraphs  13(d)  and  14(d)  of the
Securities Exchange Act of 1934, as amended [the "Exchange Act"]),  other than a
trustee or other fiduciary holding  securities under an employee benefit plan of
the Company or a corporation owned directly or indirectly by the stockholders of
the Company in substantially the same proportions as their ownership of stock of
the  Company,  is or becomes  the  "beneficial  owner" (as defined in Rule 13d-3
under  said  Act),  directly  or  indirectly,   of  securities  of  the  Company
representing  one-third  or more of the total voting  power  represented  by the
Company's  then  outstanding  Common  Stock,  or (ii)  during  any period of two
consecutive  years,  individuals who at the beginning of such period  constitute
the Board of Directors of the Company and any new director whose election by the
Board of Directors or nomination for election by the Company's  stockholders was
approved by a vote of at least  two-thirds  (2/3) of the directors then still in
office  who  either  were  directors  at the  beginning  of the  period or whose
election or nomination  for election was  previously so approved,  cease for any
reason to  constitute  a  majority  thereof,  or (iii) the  stockholders  of the
Company  approve  a merger  or  consolidation  of the  Company  with  any  other
corporation,  other than a merger or  consolidation  which  would  result in the
Common Stock of the Company outstanding  immediately prior thereto continuing to
represent  (either by remaining  outstanding  or by being  converted into Common
Stock of the  surviving  entity) at least  two-thirds  of the total voting power
represented  by the  Common  Stock  of the  Company  or  such  surviving  entity
outstanding immediately after such merger or consolidation,  or the stockholders
of the Company
                                        3
<PAGE>
approve a plan of complete  liquidation  of the Company or an agreement  for the
sale or  disposition  by the  Company  of (in one  transaction  or a  series  of
transactions) all or substantially all the Company's assets.

                  (b) In the event of a merger,  consolidation or reorganization
with another corporation in which the Company is not the surviving  corporation,
the Company  (subject to the approval of the Board) or the board of directors of
any  corporation  assuming the  obligations of the Company  hereunder shall take
action pursuant to either clause (i) or (ii) below:

                           (i)  Appropriate   provision  may  be  made  for  the
protection  of  this  Warrant  by the  substitution  on an  equitable  basis  of
appropriate shares of the surviving corporation, provided that the excess of the
aggregate fair market value (as determined by the Company) of the shares subject
to this Warrant  immediately  before such  substitution  over the exercise price
hereof is not more than the excess of the  aggregate  fair  market  value of the
substituted shares made subject to purchase  immediately after such substitution
over the exercise price thereof; or

                           (ii)  Appropriate  provision  may  be  made  for  the
cancellation  of this Warrant.  In such event,  the Company,  or the corporation
assuming  the  obligations  of the  Company  hereunder,  shall pay the Holder an
amount  of cash  (less  normal  withholding  taxes)  equal to the  excess of the
highest fair market value per share of the Common Stock during the 60-day period
immediately  preceding  the merger,  consolidation  or  reorganization  over the
exercise  price,  multiplied  by the number of shares  subject  to this  Warrant
(whether or not then exercisable).

                  (c) Upon a Change in  Control,  subject  to  Section 9 herein,
this Warrant  (provided  that it has been  outstanding  for at least six months)
shall accelerate so that the Holder shall have the right, at all times until the
expiration or earlier  termination of this Warrant,  to exercise the unexercised
portions of this Warrant,  including the portions  thereof which would,  but for
this paragraph 5(c), not yet be exercisable.

         6. Covenants of the Company. The Company covenants and agrees that:

                  (a) During the period within which the rights  represented  by
the Warrant may be  exercised,  the Company  will at all times  reserve and keep
available,  free from  preemptive  rights out of the aggregate of its authorized
but  unissued  Common  Stock,  for the  purpose of  enabling  it to satisfy  any
obligation  to issue shares of Common  Stock upon the exercise of this  Warrant,
the  number of shares of Common  Stock  deliverable  upon the  exercise  of this
Warrant.  If at any time the number of shares of  authorized  Common Stock shall
not be sufficient to effect the exercise of this Warrant,  the Company will take
such  corporate  action as may be  necessary  to  increase  its  authorized  but
unissued  Common Stock to such number of shares as shall be sufficient  for such
purpose. The Company shall have analogous  obligations with respect to any other
securities or properties  issuable upon exercise of this Warrant.  The Company's
issuance of this Warrant shall constitute full authority to its officers who are
charged with the duty of
                                        4
<PAGE>
executing stock certificates to execute and issue the necessary certificates for
shares of Common Stock upon the exercise of this Warrant;

                  (b) All Common  Stock that may be issued upon  exercise of the
rights represented by this Warrant will, upon issuance, be validly issued, fully
paid, nonassessable, and free from all taxes, liens, and charges with respect to
the issue thereof; and

                  (c) All  original  issue  taxes  payable  with  respect to the
issuance of shares upon the exercise of the rights  represented  by this Warrant
will be borne by the Company but in no event will the Company be  responsible or
liable for income taxes or transfer taxes upon the transfer of any Warrant.

         7. No  Stockholder  Rights.  Until  exercised,  this Warrant  shall not
entitle the  Warrantholder to any voting rights or other rights as a stockholder
of the Company.  The rights of the Holder are limited to those expressed in this
Warrant and are not  enforceable  against  the Company  except to the extent set
forth herein.

         8. Transfer Restrictions.

                  (a) This  Warrant  is not  transferable  except by will or the
laws of descent and distribution and, during Holder's  lifetime,  it may only be
exercised by Holder.

                  (b) Neither this Warrant nor the shares of stock issuable upon
the exercise  hereof have been  registered  under the Securities Act of 1933, as
amended (the "Securities  Act") or under any state securities laws and unless so
registered may not be  transferred,  sold,  pledged,  hypothecated  or otherwise
disposed of unless an exemption  from such  registration  is  available.  In the
event Holder  desires to transfer  any of the shares of stock issued  hereunder,
the Holder must give the Company prior written notice of such proposed  transfer
including the name and address of the proposed transferee.  Such transfer may be
made only either (i) upon publication by the Securities and Exchange  Commission
(the  "Commission") of a ruling,  interpretation,  opinion or "no action letter"
based upon  facts  presented  to said  Commission,  or (ii) upon  receipt by the
Company of an opinion  of  counsel to the  Company in either  case to the effect
that the proposed  transfer will not violate the  provisions  of the  Securities
Act,  the  Securities  Exchange  Act of  1934,  as  amended,  or the  rules  and
regulations  promulgated  under  either  such act, or in the case of clause (ii)
above,  to the effect  that the shares of stock to be sold or  transferred  have
been  registered  under the Securities Act and that there is in effect a current
prospectus  meeting the  requirements of Subsection 10(a) of the Securities Act,
which is being or will be delivered to the  purchaser or  transferee at or prior
to the time of delivery of the certificates evidencing the shares of stock to be
sold or transferred.

                  (c) Prior to any such  proposed  transfer,  and as a condition
thereto,  if such  transfer is not made  pursuant to an  effective  registration
statement  under the  Securities  Act,  the Holder  will,  if  requested  by the
Company,  deliver  to the  Company  (i) an  investment  covenant  signed  by the
proposed  transferee,  (ii) an agreement by such transferee to the impression of
the
                                        5
<PAGE>
restrictive   investment   legend  set  forth  herein  on  the   certificate  or
certificates  representing the securities acquired by such transferee,  (iii) an
agreement by such  transferee that the Company may place a "stop transfer order"
with its transfer agent or registrar, and (iv) an agreement by the transferee to
indemnify the Company to the same extent as set forth in paragraph 8(d) below.

                  (d) Holder  acknowledges  that Holder  understands the meaning
and legal  consequences  of this  Section  8, and the  Holder  hereby  agrees to
indemnify and hold harmless the Company,  its  representatives  and each officer
and  director  thereof  from and against any and all loss,  damage or  liability
(including  all  attorneys'  fees and costs incurred in enforcing this indemnity
provision) due to or arising out of (i) the inaccuracy of any  representation or
the breach of any warranty of Holder  contained in, or any other breach of, this
Warrant  Agreement,  (ii) any  transfer of any of this  Warrant or the shares of
stock  issuable  hereunder in violation of the  Securities  Act, the  Securities
Exchange Act of 1934, as amended, or the rules and regulations promulgated under
either of such acts, (iii) any transfer of this Warrant or any of said shares of
stock not in accordance with this Warrant Agreement or (iv) any untrue statement
or  omission  to state  any  material  fact in  connection  with the  investment
representations or with respect to the facts and representations supplied by the
Holder to  counsel  to the  Company  upon  which its  opinion  as to a  proposed
transfer shall have been based.

                  (e) Any assignment,  transfer, pledge,  hypothecation or other
disposition of this Warrant attempted contrary to the provisions of this Warrant
Agreement, or any levy of execution,  attachment or other process attempted upon
the Warrant, shall be null and void and without effect.

                  (f) Unless the shares of stock  issuable  hereunder  have been
registered  under the Securities Act, upon exercise of this Warrant (in whole or
in part) and the issuance of any of said shares,  the Company shall instruct its
transfer  agent to enter stop transfer  orders with respect to such shares,  and
all  certificates  representing  said  shares  shall  bear on the  face  thereof
substantially the following legend, insofar as is consistent with Arizona law:

                  "The shares of common stock  represented  by this  certificate
                  have not been registered  under the Securities Act of 1933, as
                  amended,  and may not be sold,  offered  for  sale,  assigned,
                  transferred  or  otherwise   disposed  of  unless   registered
                  pursuant  to the  provisions  of  that  Act or an  opinion  of
                  counsel  to  the  Company  is  obtained   stating   that  such
                  disposition is in compliance with an available  exemption from
                  such registration."

         9. Termination of the Warrant.  Notwithstanding  anything herein to the
contrary,  this  Warrant  can  become  exercisable  only  while the Holder is an
employee of the Company,  and shall not be exercisable after the earliest of (i)
June 2, 2001; (ii) three months after the date the Holder's  employment with the
Company  terminates,  if such termination is for any reason other than permanent
disability,  death,  or cause;  (iii) the date the Holder's  employment with the
Company  terminates,  if such  termination  is for cause,  as  determined by the
Company in its sole
                                        6
<PAGE>
discretion;  or (iv) one year after the date the  Holder's  employment  with the
Company  terminates,  if such  termination  is the result of death or  permanent
disability.

         10. No Guarantee of Employment. This Agreement shall in no way restrict
any  right  (which  might  otherwise  exist)  of  the  Company  or  any  of  its
subsidiaries to terminate Holder's employment at any time.

         11. Lost  Certificate.  If this Warrant is lost,  stolen,  mutilated or
destroyed,  the  Company  shall,  on such terms as the  Company  may  reasonably
impose,  including a requirement that the  Warrantholder  obtain a bond, issue a
new Warrant of like denomination, tenor and date.

         12. Binding  Effect.  This Warrant shall inure to the benefit of and be
binding upon the Warrantholder,  the Company and their respective successors and
permitted assigns.

         13. Company's  Notice of Certain Events.  So long as this Warrant shall
be outstanding and unexercised (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization of the Company, reclassification of the Company, reclassification
of the capital stock of the Company, consolidation or merger of the Company with
or into another  corporation,  sale, lease or transfer of shall or substantially
all of the  property  and  assets of the  Company  to  another  corporation,  or
voluntary or involuntary dissolution, the Company shall cause to be delivered to
the Holder,  at least ten days prior to the date  specified in (a) or (b) below,
as the case may be, a notice  containing  a brief  description  of the  proposed
action and stating the date on which (a) a record is to be taken for the purpose
of  such  dividend,  distribution  or  rights,  or  (b)  such  reclassification,
reorganization,   consolidation,   merger,   conveyance,   lease,   dissolution,
liquidation or winding up is to take place and the date, if any, is to be fixed,
as of which the holders of Common  Stock of record shall be entitled to exchange
their shares of Common Stock for securities or other property  deliverable  upon
such  reclassification,   reorganization,   consolidation,  merger,  conveyance,
dissolution, liquidation or winding up.

         14. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by overnight  express  courtier or mailed,  postage
prepaid,  to the Holder at the address set forth above, or such other address as
Holder  shall have  designated  by  written  notice to the  Company as  provided
herein.  Notices or other  communications to the Company shall be deemed to have
been sufficiently given if delivered by hand, by facsimile  transmission,  or by
overnight express courier or mailed,  postage prepaid, to the company at 1719 W.
University  Dr., Suite 187,  Tempe,  Arizona 85281, or such other address as the
Company shall have  designated  by written  notice to such  registered  owner as
herein provided. All notices required hereunder shall be in writing and shall be
deemed received when delivered personally,  one business day after delivery to a
nationally recognized commercial overnight courier service, or two business days
after mailing when mailed by certified or registered  mail to the Company or the
Warrantholder.
                                        7
<PAGE>
         15.  Governing Law. The validity,  interpretation,  and  performance of
this  Warrant and of the terms and  provisions  hereof  shall be governed by and
construed in accordance  with the internal laws of the State of Arizona  without
giving effect to the principles of conflicts of laws.

         16. Amendment.  This Warrant may not be modified,  amended,  altered or
supplemented  except upon the  execution  and  delivery  of a written  agreement
executed by the Company and the Warrantholder.

         IN WITNESS  WHEREOF,  the Company  has caused  this  Warrant to be duly
executed effective as of June 3, 1996.


                                        M.D. LABS, INC.


                                        By:__________________________________
                                                 Hooman Nikzad
                                                 Chief Executive Officer
                                        8
<PAGE>
                                  PURCHASE FORM
                                  -------------

                                 To Be Executed
                            Upon Exercise of Warrant

         The undersigned  hereby  exercises the right to purchase _______ shares
of Common  Stock,  evidenced by the within  Warrant,  according to the terms and
conditions  thereof,  and herewith  makes payment of the purchase price in full.
The undersigned  requests that certificate(s) for such shares shall be issued in
the name set forth below.

Dated:                              [NAME OF HOLDER]


                                    By___________________________________
                                                      (Signature)

                                    Name:_______________________________
                                                      (Please Print)

                                    Address:_____________________________
                                            _____________________________
                                            _____________________________
                                    Employer Identification No., Social Security
                                    No. or other identifying number:

                                    _____________________________________

         If the  number of shares  specified  above  shall not be all the shares
purchasable under the within warrant,  the Warrantholder  hereby requests that a
new Warrant for the unexercised  portion shall be registered in  Warrantholder's
name and delivered to the address set forth in the Warrant.
                                        9

THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN REGISTERED UNDER
THE SECURITIES ACT OF 1933 AND HAVE BEEN TAKEN FOR INVESTMENT  PURPOSES ONLY AND
NOT WITH A VIEW TO THE  DISTRIBUTION  THEREOF,  AND SUCH  SECURITIES  MAY NOT BE
OFFERED FOR SALE, SOLD, OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION  STATEMENT  MADE UNDER THE SECURITIES ACT OF 1933 OR PURSUANT TO AN
EXEMPTION FROM THE  REGISTRATION  AND PROSPECTUS  DELIVERY  REQUIREMENTS OF SUCH
ACT,  THE  EXISTENCE  OF WHICH  EXEMPTION  HAS BEEN  CONFIRMED  BY AN OPINION OF
COUNSEL  REASONABLY  ACCEPTABLE  TO THE  COMPANY  OR BY A NO  ACTION  LETTER  OR
INTERPRETIVE OPINION OF THE STAFF OF THE SECURITIES AND EXCHANGE COMMISSION. THE
TRANSFER OF THESE SECURITIES IS RESTRICTED AS DESCRIBED HEREIN.


                  Void after 5:00 p.m., Mountain Standard Time
                                 on June 2, 2001


                                 M.D. LABS, INC.

                          COMMON STOCK PURCHASE WARRANT


         This  certifies  that, for value received of $0.01 per share ($1,500 in
the  aggregate),  Michael J. Dwyer,  or registered  assigns (the  "Holder"),  is
irrevocably entitled, subject to the provisions of this Warrant, to purchase One
Hundred Fifty  Thousand  (150,000)  shares,  $0.001 par value per share,  of the
common stock (the "Common  Stock") of M.D.  Labs,  Inc., a Delaware  corporation
(the  "Company").  The exercise price with respect to 75,000 shares  purchasable
pursuant to this warrant shall be Five Dollars  ($5.00) per share;  the exercise
price with respect to the remaining 75,000 shares  purchasable  pursuant to this
warrant shall be Ten Dollars  ($10.00) per share.  The exercise price is subject
to adjustment as provided in Section 6 below (the "Exercise Price").  The number
of shares of Common Stock to be received  upon the exercise of this Warrant (the
"Warrant  Shares") and the Exercise  Price may be adjusted  from time to time as
hereinafter set forth.  In addition,  under certain  circumstances  as set forth
herein,  the Holder  shall have the right to require the Company to register the
Warrant Shares.

         1.  Exercise of Warrant.  This  Warrant may be exercised in whole or in
part at any time or from  time to time on or after the date  hereof,  but in any
event by no later than 5:00 p.m., Mountain Standard Time, on June 2, 2001, or if
such date is a day on which federal or state chartered banking  institutions are
authorized by law to close,  then on the next  succeeding day which shall not be
such a day,  by  presentation  and  surrender  thereof  to  the  Company  at its
principal  office or at the  office of its stock  transfer  agent,  if any,  the
Purchase Form annexed hereto duly executed and  accompanied by payment,  in cash
or by certified or official bank check,  payable to the order of the Company, in
the amount of the Exercise Price for the number of Warrant  Shares  specified in
such form, together with all taxes applicable upon such exercise. Alternatively,
in  the  Holder's  discretion,  the  Exercise  Price  may  be  satisfied  (i) by
cancellation
<PAGE>
of indebtedness  to Holder,  or (ii) by surrendering to the Company the right to
acquire a number of Warrant  Shares  having a value in excess of their  Exercise
Price equal to the Exercise  Price of the Warrant Shares as to which the Warrant
is being  exercised.  If this  Warrant  should be  exercised  in part only,  the
Company shall,  if this Warrant is  surrendered  for  cancellation,  execute and
deliver a new  Warrant of the same tenor  evidencing  the right of the Holder to
purchase the balance of the Warrant Shares  purchasable  hereunder upon the same
terms and conditions as herein set forth.  Upon and as of receipt by the Company
of the  Purchase  Form (in the form  attached  hereto)  at the  office  or stock
transfer agent of the Company,  in proper form for exercise,  and accompanied by
payment as herein provided and evidence  reasonably  satisfactory to the Company
of  the  availability  of  an  exemption  from  registration   under  applicable
securities  laws,  the Holder  shall be deemed to be the holder of record of the
Warrant  Shares  issuable  upon such  exercise,  notwithstanding  that the stock
transfer  books  of the  Company  shall  then be  closed  or  that  certificates
representing such shares of Common Stock shall not then be actually delivered to
the Holder.

         2. Reservation of Shares.  The Company hereby covenants and agrees that
at all times during the period this Warrant is exercisable it shall reserve from
its authorized and unissued Common Stock for issuance and delivery upon exercise
of this  Warrant  such number of shares of its Common Stock as shall be required
for issuance and delivery upon exercise of this Warrant. The Company agrees that
its issuance of this Warrant shall constitute full authority to its officers who
are charged with the duty of executing  stock  certificates to execute and issue
the necessary  certificates for shares of Common Stock upon the exercise of this
Warrant.

         3.  Fractional  Shares.  No  fractional  shares  or stock  representing
fractional shares shall be issued upon the exercise of this Warrant.  In lieu of
any fractional  shares which would otherwise be issuable,  the Company shall pay
cash equal to the product of such  fraction  multiplied by the fair market value
of one share of Common  Stock on the date of  exercise,  as  determined  in good
faith by the Company's Board of Directors.

         4. Exercise, Transfer, Exchange, Assignment or Loss of Warrant.

                  (a) This Warrant may not be exercised, assigned or transferred
except as provided  herein and in accordance  with and subject to the provisions
of the  Securities  Act of 1933,  as  amended,  and the  Rules  and  Regulations
promulgated   thereunder  (said  Act  and  such  Rules  and  Regulations   being
hereinafter  collectively  referred to as the "Act").  Any purported transfer or
assignment  made other than in  accordance  with this  Section 4 and  Section 10
hereof shall be null and void and of no force and effect.

                  (b) This Warrant shall be  exercisable  or  transferable  only
upon the opinion of counsel  satisfactory to the Company, to the effect that (i)
the exercising party or the transferee
                                        2
<PAGE>
is a person to whom the  Warrant  Shares  may be issued  or the  Warrant  may be
legally transferred,  respectively, without registration under the Act; and (ii)
such exercise or transfer will not violate any  applicable  law or  governmental
rule or regulation  including,  without  limitation,  any applicable  federal or
state  securities  law.  Prior to the  exercise,  transfer  or  assignment,  the
exercising  party,  assignor or transferor  shall  reimburse the Company for its
reasonable expenses,  including attorneys' fees, incurred in connection with the
exercise, transfer or assignment.

                  (c)  Any  assignment  permitted  hereunder  shall  be  made by
surrender  of this  Warrant to the  Company  at its  principal  office  with the
Assignment  Form annexed  hereto duly  executed and funds  sufficient to pay any
transfer tax. In such event,  the Company  shall,  without  charge,  execute and
deliver a new Warrant in the name of the assignee  named in such  instrument  of
assignment  and this Warrant  shall  promptly be  canceled.  This Warrant may be
divided or  combined  with  other  Warrants  which  carry the same  rights  upon
presentation  thereof at the  principal  office of the Company  together  with a
written  notice  signed  by  the  Holder  thereof,   specifying  the  names  and
denominations  in which new Warrants are to be issued.  The terms  "Warrant" and
"Warrants"  as  used  herein  includes  any  Warrants  in  substitution  for  or
replacement  of this  Warrant,  or into  which  this  Warrant  may be divided or
exchanged.

                  (d) Upon receipt by the Company of evidence satisfactory to it
of the loss, theft,  destruction or mutilation of this Warrant, and (in the case
of loss, theft or destruction) of reasonably satisfactory  indemnification,  and
upon surrender and cancellation of this Warrant, if mutilated,  the Company will
execute  and  deliver a new  Warrant  of like  tenor and date and any such lost,
stolen, destroyed or mutilated Warrant shall thereupon become void. Any such new
Warrant  executed and  delivered  shall  constitute  an  additional  contractual
obligation  on the part of the  Company,  whether  or not the  Warrant  so lost,
stolen, destroyed or mutilated shall be at any time enforceable by anyone.

                  (e) Each Holder of this  Warrant,  the  Warrant  Shares or any
other security  issued or issuable upon exercise of this Warrant shall indemnify
and hold harmless the Company,  its directors and officers,  and each person, if
any,  who  controls  the  Company,   against  any  losses,  claims,  damages  or
liabilities,  joint or  several,  to which  the  Company  or any such  director,
officer or any such person may become subject under the Act or statute or common
law,  insofar as such  losses,  claims,  damages or  liabilities,  or actions in
respect  thereof,  arise out of or are based upon the disposition by such Holder
of the Warrant, the Warrant Shares or other such securities in violation of this
Warrant.

         5. Rights of the Holder.  The Holder  shall not, by virtue  hereof,  be
entitled to any rights of a shareholder in the Company, either at law or equity,
and the rights of the Holder are limited to those  expressed in this Warrant and
are not enforceable against the Company except to the extent set forth herein.
                                        3
<PAGE>
         6.  Adjustment of Exercise  Price and Number of Shares.  The number and
kind of  securities  issuable upon the exercise of this Warrant and the Exercise
Price of such  securities  shall be subject to adjustment from time to time upon
the happening of certain events as follows:

                  (a) Adjustment for Dividends in Stock.  In case at any time or
from time to time, on or after the date hereof,  the holders of the Common Stock
of the  Company  (or any  shares  of  stock  or  other  securities  at the  time
receivable  upon the exercise of this Warrant)  shall have  received,  or, on or
after the record  date fixed for the  determination  of  eligible  stockholders,
shall have become  entitled  to  receive,  without  payment  therefor,  other or
additional  stock of the Company by way of dividend,  then and in each case, the
Holder of this Warrant shall,  upon the exercise hereof, be entitled to receive,
in addition to the number of shares of Common Stock  receivable  thereupon,  and
without  payment of any additional  consideration  therefor,  the amount of such
other or  additional  stock of the Company  which such Holder  would hold on the
date of such  exercise  had it been the holder of record of such Common Stock on
the date  hereof and had  thereafter,  during the period from the date hereof to
and including the date of such  exercise,  retained such shares and/or all other
additional stock receivable by it as aforesaid during such period, giving effect
to all  adjustments  called for during such period by paragraphs  (a) and (b) of
this paragraph 6.

                  (b) Adjustment for Reclassification, Reorganization or Merger.
In case of any  reclassification or change of the outstanding  securities of the
Company or of any  reorganization  of the Company (or any other  corporation the
stock or  securities  of which are at the time  receivable  upon the exercise of
this  Warrant) on or after the date  hereof,  or in case,  after such date,  the
Company  (or any  such  other  corporation)  shall  merge  with or into  another
corporation  or  convey  all  or  substantially  all of its  assets  to  another
corporation,  then and in each such case the  Holder of this  Warrant,  upon the
exercise  hereof at any time after the  consummation  of such  reclassification,
change,  reorganization,  merger or conveyance, shall be entitled to receive, in
lieu of the stock or other securities and property  receivable upon the exercise
hereof prior to such consummation,  the stock or other securities or property to
which such Holder would have been entitled upon such consummation if such Holder
had exercised this Warrant  immediately  prior  thereto,  all subject to further
adjustment as provided in paragraphs  (a) and (c); in each such case,  the terms
of this  paragraph  6 shall  be  applicable  to the  shares  of  stock  or other
securities  properly  receivable  upon the exercise of this  Warrant  after such
consummation.

                  (c) Stock Splits and Reserve Stock  Splits.  If at any time on
or after the date hereof the Company shall subdivide its  outstanding  shares of
Common  Stock into a greater  number of  shares,  the  Exercise  Price in effect
immediately prior to such subdivision shall thereby be  proportionately  reduced
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be  proportionately  increased;  and,  conversely,  if at any time on or
after the date hereof the outstanding  number of shares of Common Stock shall be
combined  into a  smaller  number  of  shares,  the  Exercise  Price  in  effect
immediately prior to such combination shall thereby be proportionately increased
and the number of Warrant Shares  receivable  upon exercise of the Warrant shall
thereby be proportionately decreased.
                                        4
<PAGE>
         7. Officer's Certificate. Whenever the Exercise Price or the Warrant or
Shares issuable on exercise of this Warrant shall be adjusted as required by the
provisions  of  Section 6 hereof,  the  Company  shall  forthwith  file with its
Secretary or an Assistant  Secretary at its principal office, and with its stock
transfer agent, if any, an officer's  certificate  showing the adjusted Exercise
Price and Warrant  Shares  determined  as herein  provided and setting  forth in
reasonable  detail the facts  requiring  such  adjustment.  Each such  officer's
certificate  shall be made available at all  reasonable  times for inspection by
the Holder, and the Company shall, forthwith after each such adjustment, deliver
a copy of such certificate to the Holder.

         8. Registration Under Securities Act of 1933, as amended (the "Act").

         8.1 Certain Other  Definitions.  As used in this Common Stock  Purchase
Warrant, the following terms shall have the following respective meanings:

                  "Commission"  shall  mean the  United  States  Securities  and
Exchange Commission and any successor federal agency having similar powers.

                  "Initiating  Holder"  shall  mean any  Holder or  Holders,  as
defined herein,  who or which, in the aggregate,  own not less than 50.1% of the
aggregate  number  of  Registrable  Securities,  as  hereinafter  defined,  then
existing.

                  The term "majority of the Registrable  Securities" refers to a
majority of the specified Registrable Securities.

                  The terms "register", "registered" and "registration" refer to
a  registration  effected by preparing  and filing a  registration  statement in
compliance with the Act, and the declaration or ordering of the effectiveness of
such registration statement.

                  "Registrable  Securities"  shall mean those  Securities  which
have not been  included in a  registration  statement  deemed to be effective or
those Securities sold to the public.

                  "Registration  Expenses"  shall mean all expenses  incurred by
the Company in complying with this Section 8, including, without limitation, (i)
all registration and filing fees,  printing expenses,  fees and disbursements of
counsel for the Company (but not counsel retained by the Holders), blue sky fees
and expenses, and accountants' expenses including without limitation any special
audits or "comfort"  letters  incident to or required by any such  registration,
transfer taxes, fees of transfer agents and registrars, costs of insurances, and
fees of the National Association of Securities Dealers,  Inc., and (ii) any fees
and  disbursements  of  underwriters  customarily  paid by issuers or sellers of
securities, but excluding underwriting discounts and commissions.

                  "Securities"  shall  mean the  Common  Stock,  as  hereinafter
defined, subject to this Common Stock Purchase Warrant,  together with any other
securities which are hereafter issued
                                        5
<PAGE>
with  respect  thereto  by  way  of  exchange,  reclassification,   dividend  or
distribution, whether or not such securities have been sold to the public.

                  "Common Stock" shall mean all currently  outstanding shares of
$0.001  par  value  per  share  common  stock  of the  Company  now  issued  and
outstanding  and all shares  hereafter  issued and  outstanding,  as well as any
securities hereafter convertible into or exchangeable for shares of Common Stock
of the Company.

         8.2 Registration on Demand.

                  (a) Demand.  Upon the written demand of one or more Initiating
Holders (which may be given not earlier than December 3, 1997),  requesting that
the Company effect the  registration  under the Act of up to fifty percent (50%)
of such Initiating Holder's  Registrable  Securities and specifying the intended
method or methods of disposition thereof, the Company will promptly,  but in any
event within ten (10) days, give written notice of such demanded registration to
Holder,  or its  successors  and  assigns,  as the case may be, and to the other
acquirers of Registrable  Securities  (together with the Holder,  the "Holders")
and thereupon will use its best efforts to effect the registration under the Act
of:

                         (i) the  Registrable  Securities  which the Company has
                  been so demanded to register by such  Initiating  Holder,  for
                  disposition in accordance  with the intended method or methods
                  of disposition stated in such demand,

                        (ii) all other Registrable  Securities which the Company
                  has been  demanded  to  register  by the  Holders  thereof  by
                  written  demand  delivered to the Company within ten (10) days
                  after  giving of such  written  notice by the  Company  (which
                  request  shall  specify  the  intended  method or  methods  of
                  disposition of such Registrable Securities), and

                       (iii) all shares of Common  Stock  which the  Company may
                  elect to  register  for its own account or the  account(s)  of
                  other  stockholder(s)  in  connection  with  the  offering  of
                  Registrable Securities pursuant to this Section 8.2,

all to the extent  requisite to permit the  disposition  (in accordance with the
intended  methods thereof as aforesaid) of the  Registrable  Securities so to be
registered,  provided that the Company shall not be required to effect more than
one (1) registration pursuant to this Section 8.2. If, at the date of receipt of
a demand by Initiating  Holder,  the Company has previously filed a registration
statement  pursuant to the act (otherwise than on Form S-4 or S-8 or any similar
form for the registration of securities  pursuant to an employee benefit plan or
business combination or reorganization), the Company may defer the filing of any
such demanded  registration  statement to a date not later than ninety (90) days
after the effective date of such prior registration statement.
                                        6
<PAGE>
                  (b) Registration  Statement Form. Each  registration  demanded
pursuant to this  Section 8.2 shall be effected by the filing of a  registration
statement  on any form which the  Company is  eligible  to use,  such form to be
selected by the  Company,  after  consultation  with counsel and after notice of
such  selection  of such form is  delivered  to the  Holders of all  Registrable
Securities electing to participate in such registration; provided, however, that
if the Holders of at least a majority of the Registrable  Securities as to which
registration  has been  demanded  pursuant to this Section 8.2 shall so request,
the Company shall file such registration  statement pursuant to the Commission's
Rule 415,  or any  successor  rule or  regulation  thereto,  so as to permit the
continuous or delayed offering of the Registrable  Securities in accordance with
the intended method of disposition  specified in the Initiating  Holder's notice
pursuant  to  subsection  (a) of this  Section  8.2,  but in no event  shall the
Company be required to maintain the  effectiveness of such  registration  beyond
the period  specified in Section  8.4(b).  Such selection of form by the Company
shall be final.

                  (c)  Expenses.  Except as otherwise  prohibited  by applicable
law,  the Company  will pay all  Registration  Expenses in  connection  with the
registration of Registrable Securities requested pursuant to this Section 8.2.

                  (d) Effective Registration Statement. A registration requested
pursuant  to this  Section  8.2  shall not be  deemed  to be  effected  unless a
registration  statement covering all shares of Registrable  Securities specified
in notices  received as described in subsection (a), for sale in accordance with
the method of disposition  specified by the Initiating  Holder,  shall have been
declared  effective by the Commission or otherwise becomes  effective;  provided
that a  registration  which  does not become  effective  after the  Company  has
substantially  prepared and has filed or is in a position to file a registration
statement with respect thereto solely by reason of the refusal to proceed of any
of the  Initiating  Holders  (other than any  refusal to proceed  based upon the
advice of their  counsel  that the  registration  statement,  or the  prospectus
contained  therein,  contains an untrue statement of a material fact or omits to
state a material  fact  required to be stated  therein or  necessary to make the
statements  therein not misleading in light of the circumstances  then existing)
shall be deemed to have been  effected  by the  Company  at the  request of such
Holder.

         8.3 Piggyback Registration Rights.

                  (a) Right to Include Registrable  Securities.  If, at any time
within five (5) years from the date hereof,  other than in  connection  with the
Company's initial registration and offering of its securities to the public, the
Company proposes to register any of its equity securities under the Act, whether
or not for sale for its own  account,  on a form  and in a  manner  which  would
permit  registration of Registrable  Securities for sale to the public under the
Act, it will, each such time, unless inclusion of Registrable Securities in such
registration is prohibited by the terms of a financing  transaction  pursuant to
which the Company raised gross  proceeds of at least $2 million,  give notice at
least  twenty  (20) days prior to the  proposed  filing  date to all  Holders of
Registrable Securities of its intention to do so, describing such securities
                                        7
<PAGE>
and specifying the form and manner and the other relevant facts involved in such
proposed registration and, upon the written request of any such Holder delivered
to the Company  within ten (10) days after the giving of any such notice  (which
request shall specify the Registrable  Securities  intended to be disposed of by
such Holder and the  intended  method or methods of  disposition  thereof),  the
Company shall use its best efforts to effect the  registration  under the act of
Registrable  Securities  which the Company has been requested to register by the
Holders of Registrable Securities  (hereinafter  "Requesting  Holders"),  to the
extent  requisite to permit the  disposition  (in  accordance  with the intended
methods thereof as aforesaid) of the Registrable Securities so to be registered,
of those  Registrable  Securities  which the Company is requested to register by
Holder of the Registrable Securities provided that:

                         (i) if, at any time  after  giving  such  notice of its
                  intention to register any of its  securities  and prior to the
                  effective  date  of  the   registration   statement  filed  in
                  connection with such registration, the Company shall determine
                  for any reason not to register  such  securities,  the Company
                  may,   at  its   election,   give   written   notice  of  such
                  determination  to each Holder of  Registrable  Securities  and
                  thereupon  shall be relieved of its obligation to register any
                  Registrable  Securities in connection  with such  registration
                  (but not its  obligation to pay the  Registration  Expenses in
                  connection  therewith  as provided in  subsection  (b) of this
                  Section 8.3), without prejudice, however, to the rights of any
                  one or more  Holders  to  request  that such  registration  be
                  effected in a subsequent such registration;

                        (ii) if (a) the  registration so proposed by the Company
                  involves an  underwritten  offering of the securities so being
                  registered  to  be  distributed  by or  through  one  or  more
                  underwriters of recognized  standing under  underwriting terms
                  appropriate for such a transaction,  (b) the Company  proposes
                  that the  securities  to be  registered  in such  underwritten
                  offering  will not include all of the  Registrable  Securities
                  requested to be so included,  and (c) the managing underwriter
                  of such  underwritten  offering  shall advise the Company,  in
                  writing that,  in its opinion,  the  distribution  of all or a
                  specified portion of such Registrable Securities  concurrently
                  with the securities  being  distributed  by such  underwriters
                  will materially and adversely  affect the distribution of such
                  securities  by such  underwriters  (such  opinion to state the
                  reasons therefor), then the Company will promptly furnish each
                  such  Holder  of  Registrable  Securities  with a copy of such
                  opinion and may require, by written notice to each such Holder
                  accompanying  such opinion,  that the distribution of all or a
                  specified  portion of such Registrable  Securities be excluded
                  from such  distribution  (in case of an exclusion of a portion
                  of such Registrable  Securities,  such portion to be allocated
                  among such Holders in proportion to the respective  numbers of
                  shares of Registrable Securities so requested to be registered
                  by such Holders); provided, however, that if the Company shall
                  require such a reduction, the Holder of Registrable Securities
                  shall have the right to withdraw from the offering; and
                                        8
<PAGE>
                       (iii) the Company  shall not be  obligated  to effect any
                  registration of Registrable  Securities under this Section 8.3
                  incidental  to the  registration  of any of its  securities in
                  connection  with  mergers,   acquisitions,   exchange  offers,
                  dividend reinvestment plans or stock options or other employee
                  benefit  plans  or  incidental  to  the  registration  of  any
                  non-equity securities not convertible into equity securities.

                  No registration of Registrable  Securities effected under this
Section 8.3 shall relieve the Company of its obligation to effect  registrations
of Registrable  Securities upon the request of an Initiating  Holder pursuant to
Section 8.2.

                  (b)  Expenses.  Except as otherwise  prohibited  by applicable
law,  the Company  will pay all  Registration  Expenses in  connection  with the
registration of Registrable Securities requested pursuant to this Section 8.3.

         8.4 Registration Procedures. If and whenever the Company is required to
use its best efforts to effect the  registration of any  Registrable  Securities
under the Act as provided in Section 8.2 and 8.3, the Company shall promptly:

                  (a) use its best  efforts to prepare and (in any event  within
(90) days of the last date of which the Holders of  Registrable  Securities  may
notify the Company of their request to include their  Registrable  Securities in
such registration in accordance herewith or such earlier date as may be provided
elsewhere herein) file with the Commission a registration statement with respect
to  such  Registrable  Securities  and  use  its  best  efforts  to  cause  such
registration  statement  to become  effective  provided  that,  in the case of a
registration of any Registrable  Securities pursuant to Section 8.2 or 8.3, such
preparation and filing may be delayed if, in the good faith determination of the
Board of Directors of the Company,  such deferral  would be in the best interest
of the Company and such  deferral  would be without  material  prejudice  to the
rights  of  the  Holders  of   Registrable   Securities  to  request  that  such
registration be effected as a subsequent registration under Section 8.3;

                  (b)  use its  best  efforts  to  prepare  and  file  with  the
Commission such amendments and  supplements to such  registration  statement and
the  prospectus  used in  connection  therewith as may be necessary to keep such
registration  statement  effective and to comply with the  provisions of the Act
with  respect  to  the  disposition  of all  Registrable  Securities  and  other
securities covered by such registration statement until the earlier of such time
as all of such Registrable Securities and other securities have been disposed of
in accordance with the intended  methods of disposition by the seller or sellers
thereof set forth in such  registration  statement or the  expiration of one (1)
year (or, in the case of  registration  of  Registrable  Securities  pursuant to
Section  8.3,  ninety  (90)  days  after  such  registration  statement  becomes
effective;  and  will  furnish,  upon  request,  to each  such  seller  and each
Requesting  Holder  prior  to the  filing  thereof  a copy of any  amendment  or
supplement to such  registration  statement or prospectus and shall not file any
such amendment or supplement to which any such seller or
                                        9
<PAGE>
Requesting  Holder  shall have  reasonably  objected  on the  grounds  that such
amendment  or  supplement  does not  comply  in all  material  aspects  with the
requirements of the Act or of the rules or regulations thereunder with regard to
disclosure concerning a holder of Registrable Securities;

                  (c) furnish to each seller of such Registrable  Securities and
each  Requesting  Holder such number of  conformed  copies of such  registration
statement  and of each  such  amendment  and  supplement  thereto  (in each case
including all  exhibits),  such number of copies of the  prospectus  included in
such  registration  statement  (including  each  preliminary  prospectus and any
summary  prospectus),  in  conformity  with the  requirements  of the Act,  such
documents,  if any, incorporated by reference in such registration  statement or
prospectus,  and such other documents,  as such seller or Requesting  Holder may
reasonably request;

                  (d)  use  its  best   efforts  to   register  or  quality  all
Registrable  Securities  and  other  securities  covered  by  such  registration
statement  under  such  other  securities  or blue sky laws of the States of the
United States as each seller shall reasonably request, to keep such registration
or qualification in effect for so long as such registration statement remains in
effect,  and do any and all other  acts and  things  which may be  necessary  or
advisable  to  enable  such  seller  to  consummate  the   disposition  in  such
jurisdictions  of  its  Registrable  Securities  covered  by  such  registration
statement, except that the Company shall not for any such purpose be required to
quality  generally to do business as a foreign  corporation in any  jurisdiction
wherein it is not and would not,  but for the  requirements  of this  subsection
(d), be obligated to be so  qualified,  or to subject  itself to taxation in any
such  jurisdiction,  or to  consent  to  general  service of process in any such
jurisdiction  or to obtain  clearance in more than five (5) states if the Common
Stock is not listed on the Nasdaq National Market System;

                  (e) upon  request,  use best efforts to furnish to each seller
of  Registrable  Securities  and each  Requesting  Holder a signed  counterpart,
addressed  to such  seller  and such  Requesting  Holder,  of (i) an  opinion of
counsel to the Company,  dated the effective date of such registration statement
(and, if such registration  includes an underwritten public offering,  dated the
date of the  closing  under the  underwriting  agreement),  and (ii) a "comfort"
letter,  signed by the  independent  public  accountants  who have certified the
Company's financial  statements included in such registration  statement,  dated
after  the  effective  date  of  such  registration   statement  (and,  if  such
registration statement includes an underwritten public offering,  dated the date
of the closing under the underwriting  agreement),  covering  substantially  the
same matters with respect to such  registration  statement  (and the  prospectus
included therein) and, in the case of such accountants'  letter, with respect to
events subsequent to the date of such financial  statements,  as are customarily
covered in opinions of issuer's counsel and in accountant's letters delivered to
underwriters in underwritten public offerings of securities;

                  (f) immediately  notify each seller of Registrable  Securities
covered by such registration  statement and each Requesting  Holder, at any time
when a prospectus  relating  thereto is required to be delivered  under the Act,
upon discovery that, or upon the happening
                                       10
<PAGE>
of any event as a result of which, the prospectus  included in such registration
statement, as then in effect, includes an untrue statement of a material fact or
omits to state any material fact  required to be stated  therein or necessary to
make the statements  therein not misleading in light of the  circumstances  then
existing,   which  untrue  statement  or  omission  requires  amendment  of  the
registration statement or supplementation of the prospectus,  and at the request
of any such seller or Requesting Holder,  prepare and furnish to such seller and
Requesting  Holder a  reasonable  number  of  copies  of a  supplement  to or an
amendment  of  such  prospectus  as may be  necessary  so  that,  as  thereafter
delivered to the acquirers of such Registrable Securities, such prospectus shall
not include an untrue  statement of a material  fact or omit to state a material
fact required to be stated therein or necessary to make the  statements  therein
not  misleading  in the  light of the  circumstances  then  existing;  provided,
however that each Holder of Registrable  Securities  registered pursuant to such
registration  statement  agrees that such  Holder will not sell any  Registrable
Securities  pursuant  to such  registration  statement  during the time that the
Company is  preparing  and filing  with the  Commission  a  supplement  to or an
amendment of such prospectus or registration statement;

                  (g)  otherwise  use  its  best  efforts  to  comply  with  all
applicable  rules and regulations of the  Commission,  and make available to its
Holders, as soon as reasonably  practicable,  an earnings statement covering the
period of at least twelve (12) months,  but not more than  eighteen (18) months,
beginning  with the first month of the first fiscal  quarter after the effective
date of such registration statement,  which earnings statement shall satisfy the
provisions of Section 11(a) of the Act;

                  (h) provide and cause to be  maintained  a transfer  agent and
registrar for all Registrable  Securities covered by such registration statement
from and after a date not later  than the  effective  date of such  registration
statement; and

                  (i) use its best  efforts to list all  Registrable  Securities
covered by such registration  statement on each securities exchange on which any
of the Common  Stock of the Company is then listed or, if the  Company's  Common
Stock  is not then  quoted  on  NASDAQ  or  listed  on any  national  securities
exchange,  use its best efforts to have such Registrable  Securities  covered by
such  registration  statement quoted on NASDAQ or, at the option of the Company,
listed on a national securities exchange.

The Company may require each seller of  Registrable  Securities  as to which any
registration is being effected to furnish the Company such information regarding
such seller and the distribution of such securities as the Company may from time
to time reasonably  request in writing and as shall be required by law or by the
Commission  in   connection   therewith  and  such  seller  shall  furnish  such
information.  If such information is not provided when requested, the Company in
its discretion may exclude the affected shares from registration.
                                       11
<PAGE>
         8.5 Underwritten Offerings.

                  (a)  Underwritten  Offerings.  If  the  number  of  shares  of
Registrable  Securities and any other  securities to be sold in any underwritten
offering  involves a registration  requested by Initiating  Holders  pursuant to
Section 8.2 should be limited due to market conditions or otherwise, the Company
shall include in such registration to the extent of the number which the Company
is so advised can be sold in such  offering  (i) first,  Registrable  Securities
requested  to be  included in such  registration,  pro rata among the Holders of
such  Registrable  Securities  on the  basis of the  number  of  shares  of such
securities  requested to be included by such Holders,  and (ii) other securities
of the Company proposed to be included in such registration,  in accordance with
the priorities,  if any, then existing among the Company and the Holders of such
securities.

                  (b) Underwriting  Agreement.  If requested by the underwriters
for any underwritten offering of Registrable Securities on behalf of a Holder or
Holders of Registrable  Securities  pursuant to a registration  requested  under
Section 8.2, the Company will enter into an  underwriting  agreement  reasonably
acceptable  to the  Company  with  such  underwriters  for such  offering,  such
agreement to contain such representations and warranties by the Company and such
other  terms  and  provisions  as  are  customarily  contained  in  underwriting
agreements  with  respect  to  distributions,   including,  without  limitation,
indemnities to the effect and to the extent  provided in Section 8.7,  provided,
however,   that  such  agreement  shall  not  contain  any  provision  which  is
inconsistent with the provisions hereof.  The Holders of Registrable  Securities
on  whose  behalf   Registrable   Securities  are  to  be  distributed  by  such
underwriters  shall  be  parties  to any  such  underwriting  agreement  and the
representations  and warranties by, and the other agreements on the part of, the
Company to and for the  benefit of such  underwriters  shall also be made to and
for the  benefit of such  Holders of  Registrable  Securities.  Such  Holders of
Registrable  Securities  shall  not be  required  by the  Company  to  make  any
representations  or  warranties  to  or  agreements  with  the  Company  or  the
underwriters  other than  reasonable  representations,  warranties or agreements
(including indemnity agreements customary in secondary offerings) regarding such
Holder, such Holder's  Registrable  Securities and such Holder's intended method
or methods of disposition and any other representation required by law.

                  (c) Piggyback  Underwritten  Offerings.  If the Company at any
time proposed to register any of its securities under the Act as contemplated by
Section 8.3 and such  securities are to be distributed by or through one or more
underwriters,  the Company will use its best efforts, if requested by any Holder
of Registrable  Securities,  who requests piggyback  registration of Registrable
Securities in connection  there with pursuant to Section 8.3 to arrange for such
underwriters  to include the  Registrable  Securities  to be offered and sold by
such  Holder  among  the  securities  to  be  distributed  by  or  through  such
underwriters, provided that, for purposes of this sentence, "best efforts" shall
not require  the  Company to reduce the amount or sale price of such  securities
proposed  to be  distributed  by or through  such  underwriters.  The Holders of
Registrable  Securities to be distributed by such underwriters  shall be parties
to the underwriting
                                       12
<PAGE>
agreement between the Company and such underwriters and the  representation  and
warranties  by, and the other  agreements on the part of, the Company to and for
the benefit of such  underwriters,  shall also be made to and for the benefit of
such Holders of Registrable Securities, and the Company will cooperate with such
Holders of Registrable  Securities to the end that the  conditions  precedent to
the   obligations  of  such  Holders  of  Registrable   Securities   under  such
underwriting  agreement  shall not include  conditions that are not customary in
underwriting   agreements  with  respect  to  combined   primary  and  secondary
distributions and shall be otherwise  satisfactory to such Holders. Such Holders
of  Registrable  Securities  shall  not be  required  by  the  Company  to  make
representations or warranties to or agreements  (including  customary  indemnity
agreements)  with  the  Company  or  the  underwriters   other  than  reasonable
representations,  warranties or agreements  regarding such Holder, such Holder's
Registrable   Securities  and  such  Holder's  intended  method  or  methods  of
distribution and any other representation required by law.

                  (d)  Selection  of   Underwriters.   Whenever  a  registration
requested pursuant to Section 8.2 is for an underwritten  offering,  the Holders
of a majority of the Registrable  Securities included in such registration shall
have the right to select the managing underwriter(s) to administer the offering,
subject to the approval of the Company, which approval shall not be unreasonably
withheld.  If the Company at any time proposed to register any of its securities
under  the Act for  sale  for its own  account  and  such  securities  are to be
distributed  by or  through  one or  more  underwriters,  the  selection  of the
managing underwriter(s) shall be made by the Company and notice of the selection
thereof  delivered  to the  Holders of all  Registrable  Securities  eligible to
participate in such registration.

                  (e)  Holdback  Agreements.  If any  registration  pursuant  to
Section 8.2 or 8.3 shall be in connection with an underwritten  public offering,
each Holder of Registrable  Securities agrees by acquisition of such Registrable
Securities, if so required by the managing underwriter, not to effect any public
sale or  distribution  of  Registrable  Securities  or other  securities  of the
Company (other than as part of such  underwritten  public offering) within seven
(7) days  prior to the  effective  date of such  registration  statement  or one
hundred  twenty  (120)  days  after  the  effective  date of  such  registration
statement.

         8.6  Preparation:  Reasonable  Investigation.  In  connection  with the
preparation and filing of each registration  statement  registering  Registrable
Securities  under the Act,  the  Company  will give the  Holders of  Registrable
Securities on whose behalf such  Registrable  Securities are to be so registered
and the  underwriters,  if any, each  Requesting  Holder,  and their  respective
counsel and  accountants,  the  opportunity to participate in the preparation of
such registration statement,  each prospectus included therein or filed with the
Commission and each amendment thereof or supplement thereto,  and will give each
of them such access to its books and records and such  opportunities  to discuss
the  business  of the  Company  with its  officers  and the  independent  public
accountants  who have certified its financial  statements as shall be reasonably
necessary to conduct a reasonable  investigation  within the meaning of the Act.
To  minimize  disruption  and  expense to the  Company  during the course of the
registration process,
                                       13
<PAGE>
sellers  of  Registrable  Securities  to be  covered  by any  such  registration
statement  shall  coordinate  their  investigation  and  due  diligence  efforts
hereunder,  and,  to the extent  practicable,  will act  through a single set of
counsel and a single set of accountants.

         8.7 Indemnification.

                  (a)  Indemnification  by  the  Company.  In the  event  of any
registration  of any securities of the Company under the Act, the Company shall,
and  hereby  does,  hereby  indemnify  and  hold  harmless  in the  case  of any
registration  statement filed pursuant to this Section 8.2 or 8.3, the seller of
any Registrable Securities covered by such registration statement, such seller's
directors,  trustees,  officers,  agents and  attorneys  each  other  person who
participates  as an underwriter  in the offering or sale of such  securities and
each other  person,  if any,  who controls  such seller or any such  underwriter
within the meaning of the Act against any losses, claims,  damages,  liabilities
or expenses,  joint or several, to which such seller or Requesting Holder or any
such  director  or officer or  participating  person or  controlling  person may
become  subject  under the Act or  otherwise,  insofar as such  losses,  claims,
damages,  liabilities or expenses (or actions or proceedings in respect thereof)
arise  out of or are based  upon (x) any  untrue  statement  or  alleged  untrue
statement of any material fact  contained in any  registration  statement  under
which such securities were registered under the Act, any preliminary prospectus,
final prospectus or summary prospectus  contained  therein,  or any amendment or
supplement thereto, or any document  incorporated by reference therein,  (y) any
omission or alleged  omission to state  therein a material  fact  required to be
stated therein or necessary to make the statements  therein not  misleading,  or
(z) any failure by the Company  timely to deliver a  prospectus  or otherwise to
comply with  applicable  securities  laws and the Company  will  reimburse  such
seller,  Requesting  Holder and each such  director,  trustee,  officer,  agent,
attorney, participating person and controlling person for any legal or any other
expenses  reasonably  incurred  by  them in  connection  with  investigating  or
defending any such loss, claim, liability,  action or proceeding,  provided that
the  Company  shall not be liable in any such case to the  extent  that any such
loss,  claim,  damage,  liability or expense (or action or proceeding in respect
thereof)  arises out of or is based upon an untrue  statement or alleged  untrue
statement or omission or alleged omission made in such  registration  statement,
any such preliminary prospectus, final prospectus, summary prospectus, amendment
or supplement in reliance upon and in conformity with  information  furnished to
the  Company  by such  seller or such  Requesting  Holder or any such  director,
trustee, officer, participating person or controlling person.

                  (b) Indemnification by the Seller. The Company may require, as
a condition to including  Registrable  Securities in any registration  statement
filed  pursuant to Section 8.2 or 8.3,  that the Company  shall have received an
undertaking  satisfactory to it from each prospective seller of such securities,
severally  and not jointly,  to indemnify  and hold harmless (in the same manner
and to the same extent as set forth in  subsection  (a) of this Section 8.7) the
Company,  each  director of the  Company,  each officer of the Company who shall
sign such registration statement and each other person, if any, who controls the
Company  within the meaning of the Act, and the Company's  agents and attorneys,
with respect to (i) any untrue statement in or
                                       14
<PAGE>
omission from such registration  statement,  any preliminary  prospectus,  final
prospectus  or  summary  prospectus   included  therein,  or  any  amendment  or
supplement  thereto, if such statement or omission was made in reliance upon and
in conformity with  information  furnished to the Company by such seller or (ii)
any failure by such seller timely to deliver a prospectus or otherwise to comply
with applicable  securities  laws. Such indemnity shall remain in full force and
effect  regardless of any  investigation  made by or on behalf of the Company or
any such director,  officer,  agent or attorney or controlling  person and shall
survive the transfer of such securities by such seller.

                  (c)  Notice of  Claims,  etc.  Promptly  after  receipt  by an
indemnified  party of notice of the commencement of any action or any proceeding
involving a claim referred to in the preceding  subsections of this Section 8.7,
such indemnified party will, if a claim in respect thereof is to be made against
an indemnifying  party, give written notice to the latter of the commencement of
such action,  provided that the failure of any indemnified  party to give notice
as provided therein shall not relieve the indemnifying  party of its obligations
under the preceding  subsections of this Section 8.7,  except to the extent that
the indemnifying party is actually materially prejudiced by such failure to give
notice. In case such action is brought against an indemnified  party,  unless in
such indemnified  party's reasonable judgment (i) a conflict of interest between
such indemnified and indemnifying parties may exist in respect of such claim, or
(ii) the  indemnified  party has available to it reasonable  defenses  which are
different from or additional to those available to the  indemnifying  party, the
indemnifying party shall be entitled to participate in and to assume the defense
thereof,  jointly with any other indemnifying party similarly  notified,  to the
extent  that  it  may  wish,  with  counsel  reasonably   satisfactory  to  such
indemnified  party,  and  after  notice  from  the  indemnifying  party  to such
indemnified  party  of its  election  so to  assume  the  defense  thereof,  the
indemnifying  party shall not be liable to such indemnified  party for any legal
or other  expenses  subsequently  incurred by the latter in connection  with the
defense thereof other than reasonable  costs of  investigation.  Notwithstanding
the foregoing, in any such action, any indemnified party shall have the right to
retain its own counsel but the fees and  disbursements  of such counsel shall be
at the expense of such indemnified party unless (i) the indemnifying party shall
have failed to retain counsel for the indemnified  person as aforesaid,  or (ii)
the indemnifying  party and such indemnified party shall have mutually agreed to
the retention of such  counsel.  It is understood  that the  indemnifying  party
shall  not,  in  connection  with any  action  or  related  actions  in the same
jurisdiction, be liable for the fees and disbursements of more than one separate
firm qualified in such jurisdiction to act as counsel for the indemnified party.
The indemnifying  party shall not be liable for any settlement of any proceeding
effected  without its written  consent  but if settled  with such  consent or if
there be a final judgment for the plaintiff,  the  indemnifying  party agrees to
indemnify the indemnified party from and against any loss or liability by reason
of such settlement or judgment. No indemnifying party shall, without the consent
of the  indemnified  party,  consent to entry of any  judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the  claimant  or  plaintiff  to such  indemnified  party of a release  from all
liability in respect to such claim or litigation.
                                       15
<PAGE>
                  (d) Other  Indemnification.  Indemnification  similar  to that
specified in the  preceding  subsections  of this Section 8.7 (with  appropriate
modifications)  shall be given by the  Company  and each  seller of  Registrable
Securities with respect to any required  registration or other  qualification of
such  Registrable  Securities  under any federal or state law or  regulation  of
governmental authority other than the Act.

                  (e) Contribution.  If the indemnification  provided for in the
Section 8.7 is unavailable or insufficient to hold harmless an indemnified party
in respect of any losses, claims, damages,  liabilities or expenses described as
indemnifiable  pursuant to subsections (a) or (b), then each indemnifying  party
shall, in lieu of indemnifying such indemnified party,  contribute to the amount
paid or payable by such indemnified  party, as a result of such losses,  claims,
damages,  liabilities  or expenses in such  proportion as appropriate to reflect
the  relative  fault  of the  Company,  on the  one  hand,  or  such  seller  of
Registrable  Securities on the other hand, and to the parties'  relative intent,
knowledge,  access to  information  and  opportunity  to correct or prevent  any
untrue statement or omission giving rise to such indemnification obligation. The
Company and the Holder of Registrable Securities agree that it would not be just
and equitable if  contributions  pursuant to this subsection (e) were determined
by pro rata allocation  (even if Holders of Registrable  Securities were treated
as one entity for such purpose) or by any other method of  allocation  which did
not take  account  of the  equitable  considerations  referred  to above in this
subsection  (e). No person guilty of fraudulent  misrepresentations  (within the
meaning of Section 11(f) of the Act) shall be entitled to contribution  from any
person who is not guilty of such fraudulent misrepresentation.

                  (f) Indemnification  Payments. The indemnification required by
this Section 8.7 shall be made by periodic payments of the amount thereof during
the course of the  investigation  or defense,  as and when bills are received or
any expense, loss, damage or liability is incurred.

                  (g)  Limitation  on  Seller's  Payments.  Notwithstanding  any
provision  hereof to the contrary,  the  liability of any seller of  Registrable
Securities under this Section 8.2 shall in no event exceed the proceeds received
by  such  seller  from  the  sale  of  Registrable  Securities  covered  by  the
registration statement giving rise to such liability.

         9.  Notices  to  Warrant  Holders.  So long as this  Warrant  shall  be
outstanding  and  unexercised  (i) if the Company shall pay any dividend or make
any  distribution  upon the Common Stock,  or (ii) if the Company shall offer to
the holders of Common Stock for  subscription  or purchase by them any shares of
stock of any class or any  other  rights,  or (iii) in the event of any  capital
reorganization  of the  Company,  reclassification  of the capital  stock of the
Company,   consolidation   or  merger  of  the  Company  with  or  into  another
corporation, sale, lease or transfer of all or substantially all of the property
and assets of the Company to another  corporation,  or voluntary or  involuntary
dissolution, the company shall cause to be delivered to the Holder, at least ten
days  prior to the date  specified  in (a) or (b)  below,  as the case may be, a
notice  containing a brief  description  of the proposed  action and stating the
date on which (a)
                                       16
<PAGE>
a record  is to be taken  for the  purpose  of such  dividend,  distribution  or
rights, or (b) such  reclassification,  reorganization,  consolidation,  merger,
conveyance,  lease, dissolution,  liquidation or winding up is to take place and
the date,  if any, is to be fixed,  as of which the  holders of Common  Stock of
record shall be entitled to exchange their shares of Common Stock for securities
or  other  property  deliverable  upon  such  reclassification,  reorganization,
consolidation, merger, conveyance, dissolution, liquidation or winding up.

         10. Transfer to Comply with the Securities Act of 1933.

                  (a) This Warrant and the Warrant  Shares or any other security
issued or issuable upon exercise of this Warrant may not be sold, transferred or
otherwise  disposed  of  except  to a person  who,  in the  opinion  of  counsel
reasonably satisfactory to the Company, is a person to whom this Warrant or such
Warrant Stock may legally be  transferred  pursuant to Section 4 hereof  without
registration and without the delivery of a current prospectus under the Act with
respect  thereto and then only against receipt of an agreement of such person to
comply with the provision of this Section 10 with respect to any resale or other
disposition  of such  securities  unless,  in the opinion of such counsel,  such
agreement is not required.

                  (b) The Company may cause the following legend to be set forth
on each certificate  representing Warrant Shares or any other security issued or
issuable upon exercise of this Warrant not theretofore distributed to the public
or sold to underwriters for  distribution to the public,  unless counsel for the
Company  is of the  opinion  as to any such  certificate  that  such  legend  is
unnecessary:

                  The  securities  represented  by this  certificate  may not be
                  offered  for  sale,  sold  or  otherwise   transferred  except
                  pursuant to an effective registration statement made under the
                  Securities  Act  of  1933  (the  "Act"),  or  pursuant  to  an
                  exemption from registration under the Act, the availability of
                  which is to be established to the satisfaction of the Company.

         11.  Governing Law. This Warrant shall be governed by, and construed in
accordance  with,  the laws of the  State of  Arizona  applicable  to  contracts
entered into and to be performed wholly within such State.

         12. Notice.  Notices and other communications to be given to the Holder
of the Warrants  evidenced by this  certificate  shall be delivered by hand,  by
facsimile  transmission,  or by express courier or mailed,  postage prepaid,  to
Michael J. Dwyer, 11180 East Cochise,  Scottsdale,  Arizona 85259, or such other
address as Holder  shall have  designated  by written  notice to the  Company as
provided herein.  Notices or other communications to the Company shall be deemed
to have been sufficiently given if delivered by hand, by facsimile transmission,
or by overnight  express courier or mailed,  postage prepaid,  to the Company at
1719 W. University, Suite 187, Tempe 85281, or such other address as the Company
shall have
                                       17
<PAGE>
designated by written notice to such registered owner as herein provided. Notice
by mail shall be deemed given (i) three  business days after being  deposited in
the United  States  mail,  postage  prepaid,  as herein  provided;  and (ii) one
business  day  after  being  sent by  overnight  express  courier  or  facsimile
transmission.


         IN WITNESS WHEREOF, the Company has executed this Warrant as of the 3rd
day of June, 1996.



                                    M.D. LABS, INC.



                                    By:_________________________________________
                                        Hooman Nikzad, Chief Executive Officer
                                       18

                                 M.D. LABS, INC.
                             1996 STOCK OPTION PLAN


1.       Purpose

         The purposes of the 1996 Stock Option Plan ("Plan") of M.D. Labs, Inc.,
an Arizona  corporation,  are to attract and retain the best available employees
and  directors of M.D.  Labs,  Inc. or any parent or  subsidiary or affiliate of
M.D.  Labs,  Inc.  which now exists or  hereafter is organized or acquired by or
acquires M.D. Labs, Inc.  (collectively  or individually as the context requires
the  "Company") as well as  appropriate  third parties who can provide  valuable
services to the Company, to provide additional  incentive to such persons and to
promote the success of the  business  of the  Company.  This Plan is intended to
comply with Rule 16b-3 under Section 16 of the Securities  Exchange Act of 1934,
as  amended  or any  successor  rule  ("Rule  16b-3"),  and the  Plan  shall  be
construed, interpreted and administered to comply with Rule 16b- 3.

2.       Definitions

         (a) "Affiliate"  means any corporation,  partnership,  joint venture or
other  entity,  domestic or foreign,  in which the Company,  either  directly or
through another affiliate or affiliates, has a 50% or more ownership interest.

         (b)  "Affiliated  Group" means the group  consisting of the Company and
any entity that is an "affiliate," a "parent" or a "subsidiary" of the Company.

         (c) "Board" means the Board of Directors of the Company.

         (d) A "Change in Control"  shall be deemed to have  occurred if (i) any
"person" (as such term is used in Paragraphs  13(d) and 14(d) of the  Securities
Exchange  Act of 1934,  as  amended),  other than a trustee  or other  fiduciary
holding  securities  under  an  employee  benefit  plan  of  the  Company  or  a
corporation  owned directly or indirectly by the  stockholders of the Company in
substantially  the same  proportions as their ownership of stock of the Company,
is or becomes the "beneficial  owner" (as defined in Rule 13d-3 under said Act),
directly or indirectly,  of securities of the Company representing  one-third or
more of the total voting power  represented  by the Company's  then  outstanding
Common Stock,  or (ii) during any period of two consecutive  years,  individuals
who at the  beginning  of such period  constitute  the Board of Directors of the
Company  and any new  director  whose  election  by the  Board of  Directors  or
nomination for election by the Company's  stockholders was approved by a vote of
at least  two-thirds (2/3) of the directors then still in office who either were
directors at the  beginning of the period or whose  election or  nomination  for
election  was  previously  so  approved,  cease for any reason to  constitute  a
majority  thereof,  or (iii) the stockholders of the Company approve a merger or
consolidation of the Company with any other corporation,  other than a merger or
consolidation  which would result in the Common Stock of the Company outstanding
immediately   prior  thereto   continuing  to  represent  (either  by  remaining
outstanding  or by being  converted  into  Voting  Securities  of the  surviving
entity) at least two-thirds of the total voting power represented
<PAGE>
by the Voting  Securities of the Company or such  surviving  entity  outstanding
immediately  after such  merger or  consolidation,  or the  stockholders  of the
Company  approve a plan of complete  liquidation  of the Company or an agreement
for the sale or disposition by the Company of (in one transaction or a series of
transactions) all or substantially all the Company's assets.

         (e) "Committee" means the Compensation or Stock Option Committee of the
Board (as designated by the Board), if such a committee has been appointed.

         (f) "Code" means the United  States  Internal  Revenue Code of 1986, as
amended.

         (g)  "Incentive  Stock  Options"  means options  intended to qualify as
incentive  stock  options  under  Section  422 of  the  Code,  or any  successor
provision.

         (h) "ISO  Group"  means the group  consisting  of the  Company  and any
corporation that is a "parent" or a "subsidiary" of the Company.

         (i)  "Nonemployee  Director" shall have the meaning assigned in Section
4(a)(ii) hereof.

         (j) "Nonqualified Stock Options" means options that are not intended to
qualify for favorable income tax treatment under Sections 421 through 424 of the
Code.

         (k)  "Parent"  means a  corporation  that is a "parent"  of the Company
within the meaning of Code Section 424(e).

         (l) "Section  16" means  Section 16 of the  Securities  Exchange Act of
1934, as amended.

         (m)  "Subsidiary"  means a corporation  that is a  "subsidiary"  of the
Company within the meaning of Code Section 424(f).

         (n) "Voting  Securities" means any securities of the Company which vote
generally in the election of directors.

3.       Incentive and Nonqualified Stock Options

         Two  types  of  options  (referred  to  herein  as  "options,"  without
distinction  between  such two types) may be granted  under the Plan:  Incentive
Stock Options and Nonqualified Stock Options.

4.       Eligibility and Administration

         (a) Eligibility. The following individuals shall be eligible to receive
grants pursuant to the Plan as follows:
                                       -2-
<PAGE>
                  (i) Any employee  (including any officer or director who is an
employee)  of the Company or any ISO Group  member  shall be eligible to receive
either Incentive Stock Options or Nonqualified  Stock Options under the Plan. An
employee may receive more than one option under the Plan.

                  (ii) Any director who is not an employee of the Company or any
Affiliated  Group member shall be eligible to receive  only  Nonqualified  Stock
Options.

                  (iii) Any other  individual whose  participation  the Board or
the  Committee  determines  is in the best  interests  of the  Company  shall be
eligible to receive Nonqualified Stock Options.

         (b)  Administration.  The Plan may be administered by the Board or by a
Committee  appointed by the Board which is  constituted so to permit the Plan to
comply  under Rule 16b-3,  as it may be amended  from time to time.  The Company
shall  indemnify and hold  harmless  each director and Committee  member for any
action or  determination  made in good  faith  with  respect  to the Plan or any
option.  Determinations  by the  Committee  or the  Board  shall  be  final  and
conclusive upon all parties.

5.       Shares Subject to Options

         The stock available for grant of options under the Plan shall be shares
of the Company's  authorized but unissued or reacquired voting common stock. The
aggregate  number of shares  that may be issued  pursuant to exercise of options
granted under the Plan shall be 300,000 shares. If any outstanding  option grant
under the Plan for any  reason  expires or is  terminated,  the shares of common
stock  allocable to the  unexercised  portion of the option grant shall again be
available  for  options  under the Plan as if no options had been  granted  with
respect to such shares.

6.       Terms and Condition of Options

         Option  grants under the Plan shall be evidenced by  agreements in such
form and containing such provisions as are consistent with the Plan as the Board
or the Committee  shall from time to time approve.  Each agreement shall specify
whether  the  option(s)   granted   thereby  are  Incentive   Stock  Options  or
Nonqualified  Stock Options.  Such  agreements may incorporate all or any of the
terms hereof by reference  and shall comply with and be subject to the following
terms and conditions:

         (a) Shares  Granted.  Each option  grant  agreement  shall  specify the
number of Incentive  Stock  Options  and/or  Nonqualified  Stock  Options  being
granted;  one  option  shall be  deemed  granted  for each  share of  stock.  In
addition,  each option grant agreement shall specify the  exercisability  and/or
vesting schedule of such options, if any.

         (b) Purchase  Price.  The purchase  price for a share  subject to (i) a
Nonqualified  Stock  Option  may be any amount  determined  in good faith by the
Committee, and (ii) an
                                       -3-
<PAGE>
Incentive  Stock  Option shall not be less than 100% of the fair market value of
the share on the date the option is granted, provided, however, the option price
of an  Incentive  Stock  Option  shall not be less than 110% of the fair  market
value of such  share on the date the option is  granted  to an  individual  then
owning  (after the  application  of the family  and other  attribution  rules of
Section  424(d) or any  successor  rule of the Code)  more than 10% of the total
combined  voting  power of all  classes of stock of the Company or any ISO Group
member.  For purposes of the Plan,  "fair market value" at any date shall be (i)
the reported closing price of such stock on the New York Stock Exchange or other
established stock exchange or Nasdaq National Market on such date, or if no sale
of such stock shall have been made on that date, on the preceding  date on which
there was such a sale,  (ii) if such stock is not then  listed on an exchange or
the Nasdaq National Market, the last trade price per share for such stock in the
over-the-counter  market as quoted  on  Nasdaq or the pink  sheets or  successor
publication  of the  National  Quotation  Bureau on such date,  or (iii) if such
stock is not then listed or quoted as referenced  above, an amount determined in
good faith by the Board or the Committee.

         (c)  Termination.  Unless  otherwise  provided  herein or in a specific
option grant agreement  which may provide for accelerated  vesting and/or longer
or shorter periods of  exercisability,  no option shall be exercisable after the
expiration of the earliest of

                  (i) in the case of an Incentive Stock Option:

                           (1) 10 years from the date the option is granted,  or
                  five  years  from  the  date  the  option  is  granted  to  an
                  individual  owning  (after the  application  of the family and
                  other  attribution rules of Section 424(d) of the Code) at the
                  time  such  option  was  granted,  more  than 10% of the total
                  combined  voting  power of all classes of stock of the Company
                  or any ISO Group member,

                           (2) three months  after the date the optionee  ceases
                  to perform  services for the Company or any ISO Group  member,
                  if  such  cessation  is  for  any  reason  other  than  death,
                  disability (within the meaning of Code Section  22(e)(3)),  or
                  cause,

                           (3) one year  after the date the  optionee  ceases to
                  perform  services for the Company or any ISO Group member,  if
                  such cessation is by reason of death or disability (within the
                  meaning of Code Section 22(e)(3)), or

                           (4) the date the optionee ceases to perform  services
                  for the Company or any ISO Group member,  if such cessation is
                  for cause,  as determined by the Board or the Committee in its
                  sole discretion;

                  (ii) in the case of a Nonqualified Stock Option;

                           (1) 10 years from the date the option is granted,
                                       -4-
<PAGE>
                           (2) two years after the date the  optionee  ceases to
                  perform  services  for the  Company  or any  Affiliated  Group
                  member,  if such cessation is for any reason other than death,
                  permanent disability, retirement or cause,

                           (3) three years after the date the optionee ceases to
                  perform  services  for the  Company  or any  Affiliated  Group
                  member,  if such  cessation  is by reason of death,  permanent
                  disability or retirement, or

                           (4) the date the optionee ceases to perform  services
                  for  the  Company  or any  Affiliated  Group  member,  if such
                  cessation  is for  cause,  as  determined  by the Board or the
                  Committee in its sole discretion;

provided,  that, unless otherwise provided in a specific option grant agreement,
an option shall only be exercisable  for the periods above following the date an
optionee ceases to perform  services to the extent the option was exercisable on
the date of such cessation.

         (d)  Method of  Payment.  The  purchase  price for any share  purchased
pursuant to the  exercise of an option  granted  under the Plan shall be paid in
full upon exercise of the option by any of the following  methods,  (i) by cash,
(ii) by check,  or (iii) to the  extent  permitted  under the  particular  grant
agreement,  by  transferring  to the  Company  shares of stock of the Company at
their fair market  value as of the date of exercise of the option as  determined
in accordance with paragraph 6(b), provided that the optionee held the shares of
stock for at least six months.  Notwithstanding  the foregoing,  the Company may
arrange for or  cooperate  in  permitting  broker-  assisted  cashless  exercise
procedures.  The  Company  may also  extend and  maintain,  or  arrange  for the
extension and  maintenance  of, credit to an optionee to finance the  optionee's
purchase of shares pursuant to the exercise of options,  on such terms as may be
approved by the Board or the Committee, subject to applicable regulations of the
Federal Reserve Board and any other  applicable laws or regulations in effect at
the time such credit is extended.

         (e) Exercise.  Except for options which have been transferred  pursuant
to  paragraph  6(f),  no option shall be  exercisable  during the lifetime of an
optionee by any person  other than the  optionee,  his or her  guardian or legal
representative.  The Board or the Committee shall have the power to set the time
or times within which each option shall be  exercisable  and to  accelerate  the
time or times of exercise;  provided,  however,  except as provided in paragraph
12, no options  may be  exercised  prior to the later of the  expiration  of six
months from the date of grant thereof or stockholder approval,  unless otherwise
provided by the Board or Committee. To the extent that an optionee has the right
to exercise  one or more  options and  purchase  shares  pursuant  thereto,  the
option(s)  may be exercised  from time to time by written  notice to the Company
stating the number of shares being  purchased and accompanied by payment in full
of the purchase price for such shares. Any certificate for shares of outstanding
stock used to pay the purchase  price shall be accompanied by a stock power duly
endorsed in blank by the registered owner of the certificate (with the signature
thereon guaranteed). If the certificate tendered by the optionee in such payment
covers more shares than are required for such  payment,  the  certificate  shall
also be accompanied by instructions from the optionee to the Company's  transfer
agent  with  respect to the  disposition  of the  balance of the shares  covered
thereby.
                                       -5-
<PAGE>
         (f) Nontransferability.  No option shall be transferable by an optionee
otherwise  than by will or the laws of descent and  distribution,  provided that
the Committee in its discretion may grant options that are transferable, without
payment of  consideration,  to  immediate  family  members of the optionee or to
trusts or  partnerships  for such family  members;  the Committee may also amend
outstanding options to provide for such transferability.

         (g) ISO $100,000 Limit. If required by applicable tax rules regarding a
particular grant, to the extent that the aggregate fair market value (determined
as of the date an Incentive  Stock Option is granted) of the shares with respect
to which an Incentive  Stock Option grant under this Plan (when  aggregated,  if
appropriate,  with shares  subject to other  Incentive  Stock Option grants made
before said grant under this Plan or another plan  maintained  by the Company or
any ISO Group member) is  exercisable  for the first time by an optionee  during
any calendar year exceeds  $100,000 (or such other limit as is prescribed by the
Code),  such  option  grant  shall be treated as a grant of  Nonqualified  Stock
Options pursuant to Code Section 422(d).

         (h)  Investment  Representation.  Unless the shares of stock covered by
the Plan  have been  registered  with the  Securities  and  Exchange  Commission
pursuant to Section 5 of the Securities  Act of 1933, as amended,  each optionee
by accepting an option grant  represents and agrees,  for himself or herself and
his or her transferees by will or the laws of descent and distribution, that all
shares of stock purchased upon the exercise of the option grant will be acquired
for  investment  and not for resale or  distribution.  Upon such exercise of any
portion of any option grant, the person entitled to exercise the same shall upon
request of the Company furnish evidence satisfactory to the Company (including a
written  and signed  representation)  to the effect that the shares of stock are
being acquired in good faith for investment and not for resale or  distribution.
Furthermore,  the  Company  may  if it  deems  appropriate  affix  a  legend  to
certificates  representing  shares of stock  purchased  upon exercise of options
indicating  that such shares have not been  registered  with the  Securities and
Exchange Commission and may so notify its transfer agent.

         (i) Rights of  Optionee.  An optionee or  transferee  holding an option
grant shall have no rights as a  stockholder  of the Company with respect to any
shares  covered by any option  grant  until the date one or more of the  options
granted  thereunder have been properly exercised and the purchase price for such
shares  has  been  paid in full.  No  adjustment  shall  be made  for  dividends
(ordinary or  extraordinary,  whether  cash,  securities  or other  property) or
distributions  or other  rights for which the  record  date is prior to the date
such share  certificate  is issued,  except as provided for in  paragraph  6(k).
Nothing in the Plan or in any  option  grant  agreement  shall  confer  upon any
optionee  any right to  continue  performing  services  for the  Company  or any
Affiliated  Group member,  or interfere in any way with any right of the Company
or any Affiliated Group member to terminate the optionee's services at any time.

         (j)  Fractional  Shares.  The  Company  shall not be  required to issue
fractional  shares upon the exercise of an option.  The value of any  fractional
share  subject to an option  grant shall be paid in cash in  connection  with an
exercise  that  results  in all full  shares  subject to the grant  having  been
exercised.
                                       -6-
<PAGE>
         (k)  Reorganizations,  Etc.  Subject  to  paragraph  9  hereof,  if the
outstanding shares of stock of the class then subject to this Plan are increased
or decreased, or are changed into or exchanged for a different number or kind of
shares or securities, as a result of one or more reorganizations,  stock splits,
reverse stock splits, stock dividends,  spin-offs, other distributions of assets
to stockholders, appropriate adjustments shall be made in the number and/or type
of shares or securities  for which options may  thereafter be granted under this
Plan and for which options then  outstanding  under this Plan may  thereafter be
exercised.  Any such  adjustments in  outstanding  options shall be made without
changing the aggregate exercise price applicable to the unexercised  portions of
such options.

         (l) Option Modification. Subject to the terms and conditions and within
the  limitations of the Plan,  the Board or the Committee may modify,  extend or
renew  outstanding  options  granted  under the Plan,  accept the  surrender  of
outstanding  options  (to the  extent  not  theretofore  exercised),  reduce the
exercise price of outstanding  options, or authorize the granting of new options
in   substitution   therefor   (to  the  extent  not   theretofore   exercised).
Notwithstanding the foregoing,  no modification of an option (either directly or
through  modification  of the Plan) shall,  without the consent of the optionee,
alter or impair any rights of the optionee under the option.

         (m) Grants to Foreign Optionees. The Board or the Committee in order to
fulfill the Plan  purposes and without  amending  the Plan may modify  grants to
participants who are foreign nationals or performing services for the Company or
an Affiliated Group member outside the United States to recognize differences in
local law, tax policy or custom.

         (n) Other  Terms.  Each option grant  agreement  may contain such other
terms,  provisions  and  conditions  not  inconsistent  with  the Plan as may be
determined  by  the  Board  or  the  Committee,   such  as  without   limitation
discretionary  performance  standards,  tax  withholding  provisions,  or  other
forfeiture provisions regarding competition and confidential information.

7.       Termination or Amendment of the Plan

         The Board may at any time terminate or amend the Plan;  provided,  that
stockholder  approval  shall be  obtained  of any action  for which  stockholder
approval  is  required  in order to comply  with Rule  16b-3,  the Code or other
applicable laws or regulatory requirements within such time periods prescribed.

8.       Stockholder Approval and Term of the Plan

         The Plan shall be effective as of June 1, 1996, the date as of which it
was adopted by the Board,  subject to  ratification  by the  stockholders of the
Company within (each of) the time  period(s)  prescribed  under Rule 16b-3,  the
Code,  and any  other  applicable  laws or  regulatory  requirements,  and shall
continue  thereafter until terminated by the Board.  Unless sooner terminated by
the Board, in its sole  discretion,  the Plan will expire on May 31, 2006 solely
with respect to the granting of  Incentive  Stock  Options or such later date as
may be permitted by the Code for Incentive Stock Options,  provided that options
outstanding upon termination or
                                       -7-
<PAGE>
expiration of the Plan shall remain in effect until they have been  exercised or
have expired or been forfeited.

9.        Merger, Consolidation, Reorganization or Change in Control

         (a) In the  event of a merger,  consolidation  or  reorganization  with
another corporation in which the Company is not the surviving  corporation,  the
Board,  the  Committee  (subject  to the  approval of the Board) or the board of
directors of any corporation  assuming the obligations of the Company  hereunder
shall take action regarding each outstanding and unexercised  option pursuant to
either clause (i) or (ii) below:

                  (i)  Appropriate  provision may be made for the  protection of
such option by the  substitution on an equitable basis of appropriate  shares of
the surviving corporation, provided that the excess of the aggregate fair market
value (as  defined  in  paragraph  6(b)) of the shares  subject  to such  option
immediately before such substitution over the exercise price thereof is not more
than the excess of the  aggregate  fair market value of the  substituted  shares
made subject to option  immediately  after such  substitution  over the exercise
price thereof; or

                  (ii) Appropriate provision may be made for the cancellation of
such  option.  In such event,  the  Company,  or the  corporation  assuming  the
obligations of the Company  hereunder,  shall pay the optionee an amount of cash
(less normal  withholding  taxes) equal to the excess of the highest fair market
value (as defined in  paragraph  6(b)) per share of the Common  Stock during the
60-day period immediately preceding the merger,  consolidation or reorganization
over the option  exercise  price,  multiplied by the number of shares subject to
such options (whether or not then exercisable).

         (b) Upon a Change in  Control,  notwithstanding  any  other  provisions
hereof,  each  unexercised  option  that has been  outstanding  for at least six
months shall  accelerate so that the optionee shall have the right, at all times
until the  expiration  or earlier  termination  of the option,  to exercise  the
unexercised portions of the option,  including the portions thereof which would,
but for this paragraph 9(b), not yet be exercisable.

10.      Dissolution or Liquidation

         Anything  contained  herein  to the  contrary  notwithstanding,  on the
effective date of any  dissolution or liquidation of the Company,  the holder of
each then outstanding option (whether or not then exercisable) shall receive the
cash amount  described  in  paragraph  9(a)(ii)  hereof and such option shall be
cancelled.

11.      Withholding Taxes

         (a) General Rule.  Pursuant to applicable  federal and state laws,  the
Company is or may be required to collect  withholding taxes upon the exercise of
an option. The Company may require,  as a condition to the exercise of an option
or the issuance of a stock  certificate,  that the optionee  concurrently pay to
the Company (either in cash or, at the request of optionee but in
                                       -8-
<PAGE>
the  discretion  of the Board or the  Committee  and  subject  to such rules and
regulations as the Board or the Committee may adopt from time to time, in shares
of Common  Stock of the  Company)  the  entire  amount or a portion of any taxes
which the Company is required  to withhold by reason of such  exercise,  in such
amount as the Committee or the Board in its discretion may determine.

         (b) Withholding from Shares to be Issued. In lieu of part or all of any
such payment,  the optionee may elect,  subject to such rules and regulations as
the Board or the  Committee  may adopt  from time to time,  or the  Company  may
require  that the Company  withhold  from the shares to be issued that number of
shares  having a fair market value (as defined in  paragraph  6(b)) equal to the
amount which the Company is required to withhold.

         (c) Special Rule for Insiders. Any such request or election (to satisfy
a withholding  obligation  using shares) by an individual  who is subject to the
provisions  of  Section  16  shall be made in  accordance  with  the  rules  and
regulations of the Securities and Exchange Commission promulgated thereunder.
                                       -9-

                                 M.D. LABS, INC.
                       LETTER OF NONQUALIFIED OPTION GRANT
                             1996 STOCK OPTION PLAN
                             ----------------------


______________, 199_

[name]
[address]



         Re:      M.D. Labs, Inc.
                  1996 Stock Option Plan

Dear ___________:

         In order to provide additional incentive to certain selected employees,
M.D. Labs, Inc., a Delaware  corporation (the "Company")  adopted the 1996 Stock
Option Plan (the "Plan").  By means of this letter,  the Company is offering you
nonqualified  stock  options  (sometimes  referred  to herein  as the  "Option")
pursuant to the Plan, a copy of which is enclosed with this letter.

         The  options  granted to you  hereunder  shall be subject to all of the
terms  and  conditions  of the Plan,  which  you  should  review  carefully.  In
addition, such options are subject to the following terms and conditions:

         1.  Grant of  Option.  Effective  the date set forth  above  (sometimes
referred to herein as the "Effective Date of Grant"), the Company grants to you,
pursuant to the Plan,  options to purchase from the Company,  upon the terms and
conditions and at the times  hereinafter set forth, an aggregate of ____________
shares of the common stock,  $.001 par value, of the Company (the "Shares") at a
purchase price of $________ per share.

         2. Vesting.  Subject to Section 7 below, the Option may be exercised as
follows:

                  (a)  After one year of  continuous  employment  following  the
Effective Date of Grant,  the Option may be exercised for up to one-third of the
Shares;

                  (b) After two years of  continuous  employment  following  the
Effective Date of Grant, the Option may be exercised for up to two-thirds of the
Shares; and

                  (c) After three years of continuous  employment  following the
Effective Date of Grant, the Option may be exercised for all of the Shares.
                                        1
<PAGE>
         3.  Nontransferability.  The option shall not be transferable otherwise
than by will or by the laws of descent and  distribution,  and the options shall
be exercisable  only (i) by you during your lifetime  (except as provided in the
next clause); and (ii) by your legal representative or a person who acquired the
right to exercise  these options by bequest or  inheritance  during the one-year
period referred to in Section 7(iv) hereof.  Any attempted transfer in violation
of this restriction shall be void.

         4. Other Conditions and Limitations.

                  (a)      Any Shares  issued  upon  exercise  of these  options
                           shall not be issued  unless the issuance and delivery
                           of Shares  pursuant  thereto  shall  comply  with all
                           relevant   provisions  of  law   including,   without
                           limitation,  the  Securities Act of 1933, as amended,
                           the Securities Exchange Act of 1934, as amended,  the
                           rules and  regulations  promulgated  thereunder,  any
                           applicable state securities or "Blue Sky" law or laws
                           (or an exemption  from such  provision is available),
                           and the requirements of any stock exchange upon which
                           the  Shares  may then be listed  and shall be further
                           subject to the  approval  of counsel  for the Company
                           with respect to such compliance.

                  (b)      No transfer of any Shares issued upon the exercise of
                           these  options  will  be  permitted  by the  Company,
                           unless any request for  transfer  is  accompanied  by
                           evidence   satisfactory   to  the  Company  that  the
                           proposed  transfer  will not result in a violation of
                           any  applicable  law,  rule  or  regulation,  whether
                           federal or state,  including in the discretion of the
                           Company an opinion of counsel  reasonably  acceptable
                           to the Company.

                  (c)      Inability of the Company to obtain  approval from any
                           regulatory  body  having   jurisdictional   authority
                           deemed by the  Company's  counsel to be necessary for
                           the lawful issuance and sale of any Shares  hereunder
                           shall  relieve  the  Company  of any  liability  with
                           respect to the  nonissuance or sale of such Shares as
                           to which such requisite authority shall not have been
                           obtained.

                  (d)      Unless  the  Shares  have been  registered  under the
                           Securities Act of 1933,  upon exercise of this option
                           (in whole or in part) and the issuance of the Shares,
                           the Company  shall  instruct  its  transfer  agent to
                           enter stop  transfer  orders with  respect to Shares,
                           and all  certificates  representing  the Shares shall
                           bear on the face thereof  substantially the following
                           legend:

                                    "The shares of common stock  represented  by
                                    this  certificate  have not been  registered
                                    under  the   Securities   Act  of  1933,  as
                                    amended,  and may not be sold,  offered  for
                                    sale,  assigned,  transferred  or  otherwise
                                    disposed  of unless  registered  pursuant to
                                    the provisions
                                        2
<PAGE>
                                    of that Act or an  opinion of counsel to the
                                    Company  is  obtained   stating   that  such
                                    disposition   is  in   compliance   with  an
                                    available exemption from such registration."

         5. Exercise of Options.  You may exercise  these options only by giving
the Chief  Executive  Officer of the Company  written  notice by  personal  hand
delivery,  or by registered or certified mail, postage prepaid, at the following
address, of your intent to exercise options (including the number of Shares that
you intend to acquire) accompanied by the full exercise price therefor:

                           Chief Executive Officer
                           M.D. Labs, Inc.
                           1719 W. University Drive
                           Tempe, Arizona 85281

Payment of the option  price  shall be made  either in (i) cash or by check,  or
(ii) at your request and with the approval of the Company,  by delivering shares
of the Company's common stock which have been  beneficially  owned by you and/or
your  spouse for a period of at least six months  prior to the time of  exercise
("Delivered Stock") or a combination of cash and Delivered Stock. Payment in the
form of  Delivered  Stock shall be in the amount of the fair market value of the
stock at the date of exercise, determined pursuant to the Plan.

         6. Valuation and  Withholding.  If required by applicable  regulations,
the Company shall, at the time of issuance of any Shares  purchased  pursuant to
the Plan,  provide you with a statement of valuation of the Shares  issued.  The
Company  shall be  entitled  to  withhold  amounts  from  your  compensation  or
otherwise to receive an amount  adequate to provide for any applicable  federal,
state and local income taxes (or require you to remit such amount as a condition
of issuance).  The Company may, in its discretion,  satisfy any such withholding
requirement,  in whole or in part, by  withholding  from the Shares to be issued
the number of Shares that would satisfy the withholding amount due.

         7.  Termination of Options.  Notwithstanding  anything to the contrary,
these  options  can become  exercisable  only while you are an  employee  of the
Company,  and  shall not be  exercisable  after  the  earliest  of (i) the fifth
anniversary  of the  Effective  Date of Grant;  (ii) three months after the date
your  employment  with the Company  terminates,  if such  termination is for any
reason other than permanent  disability,  death,  or cause;  (iii) the date your
employment  terminates,  if such  termination is for cause, as determined by the
Company in its sole discretion;  or (iv) one year after the date your employment
with the  Company  terminates,  if such  termination  is the  result of death or
permanent disability.

         8. Miscellaneous. You will have no rights as a stockholder with respect
to the Shares until the exercise of options,  payment of the full purchase price
therefor in accordance with the terms of the Plan and this Letter of Grant,  and
issuance by the Company of a certificate representing the Shares. Nothing herein
contained shall impose any obligation on the Company
                                        3
<PAGE>
or any  parent or  subsidiary  of the  Company  or on you with  respect  to your
continued  employment by the Company or any parent or subsidiary of the Company.
Nothing herein  contained  shall impose any obligation  upon you to exercise any
options.

         9.  Governing  Law.  This  Letter  of  Grant  shall be  subject  to and
construed  in  accordance  with the law of the State of  Arizona.  Venue for any
action  arising  from or relating to this  Agreement  shall lie  exclusively  in
Superior Court, Maricopa County, Arizona or the United States District Court for
the District of Arizona, Phoenix Division.

         10.  Relationship to the Plan. The options  contained in this Letter of
Grant are subject to the terms,  conditions and  definitions of the Plan. To the
extent that the terms,  conditions  and  definitions of this Letter of Grant are
inconsistent with the terms,  conditions and definitions of the Plan, the terms,
conditions and definitions of the Plan shall govern. You acknowledge  receipt of
a copy of the Plan  and  represent  that you are  familiar  with the  terms  and
provisions thereof.  You hereby accept this option subject to all such terms and
provisions.  You agree to accept as binding,  conclusive and final all decisions
or interpretations of the Board or any committee appointed by the Board upon any
questions  arising  under the Plan.  You agree to consult your  independent  tax
advisors  with  respect  to the  income  tax  consequences  to you,  if any,  of
participating in the Plan.

         11.  Communication.   No  notice  or  other  communication  under  this
Agreement  shall be  effective  unless the same is in  writing  and is mailed by
first-class mail, postage prepaid, addressed to:

                           (a) the Company at the address set forth in Section 5
above,  or such other  address as the Company has  designated  in writing to the
Employee, in accordance with the provisions hereof, or

                           (b) the  Employee  at the  address  set  forth at the
beginning of this letter,  or such other address as the Employee has  designated
in writing to the Company, in accordance with the provisions hereof.

         12.  Buyback.  Notwithstanding  anything  herein  or in the Plan to the
contrary,  until such time as the Company's  Common Stock is Publicly Traded (as
defined below), the Company may, in its sole discretion, satisfy the exercise of
the Option (or any  portion  hereof)  by paying  cash in an amount  equal to the
difference  between the  exercise  price and the fair market value of the Common
Stock on the date of exercise (as determined in accordance  with the Plan).  The
term "Publicly  Traded" stock is a class which is listed or admitted to unlisted
trading privileges on a national securities exchange or as to which sales or bid
and offer quotations are reported in the automated  quotations system ("Nasdaq")
operated by the National Association of Securities Dealers, Inc.
                                        4
<PAGE>
         You should execute the enclosed copy of this Letter of Grant and return
it to the Company as soon as possible. The additional copy is for your records.

Sincerely yours,

M.D. LABS, INC.


By:________________________________
         Hooman Nikzad
         Chief Executive Officer
                                        5
<PAGE>
                                   ACCEPTANCE

                  The undersigned  understands,  acknowledges  and agrees to the
terms and conditions of the options granted pursuant to this Letter of Grant.

                                                 _______________________________


                                                 Date:__________________________
                                       6
<PAGE>
                                 M.D. LABS, INC.

                    NOTICE OF EXERCISE OF STOCK OPTION ISSUED
                        UNDER THE 1996 STOCK OPTION PLAN

To:      Chief Executive Officer
         M.D. Labs, Inc.
                  1719 W. University, Suite 187
                  Tempe, Arizona 85281

                  I hereby  exercise my Option  dated  _______________,  199_ to
purchase  _______________  shares of $.001 par value common stock of the Company
at the option exercise price  of_______________________ per share. Enclosed is a
certified or cashier's check in the total amount of $ , or payment in such other
form as the Company has specified or as permitted by the option grant letter.

                  I  represent  to  you  that I am  acquiring  said  shares  for
investment  purposes  and  not  with  a  view  to any  distribution  thereof.  I
understand that my stock certificate may bear an appropriate  legend restricting
the transfer of my shares and that a stock transfer order may be placed with the
Company's transfer agent with respect to such shares.

                  I request that my shares be issued in my name as follows:

                    -----------------------------------------
                    (Print your name in the form in which you
                       wish to have the shares registered)

                     _____________________________________
                            (Social Security Number)

                     _____________________________________
                               (Street and Number)

               ___________________________________________________
               (City)                (State)             (Zip Code)

Dated:________________, 19__.

                             Signature:____________________________
                                       7

                            STOCK PURCHASE AGREEMENT
                            ------------------------

         THIS STOCK PURCHASE  AGREEMENT (the  "Agreement") is entered into as of
this 26th day of February,  1996, by and between Hooman Nikzad  ("Nikzad"),  and
Todd P.  Belfer  ("Belfer")  residents  of the State of Arizona  (together,  the
"Shareholders"  or the "Sellers")  the only  shareholders  of Belnik  Investment
Group,  Inc., an Arizona  corporation doing business as Freedom  Wholesalers and
African  American  Trading  Co.  ("Belnik"),  and M.D.  Labs,  Inc.,  a Delaware
corporation ("MD Labs" or "Buyer").

                                R E C I T A L S:

         WHEREAS,  Belnik  is  in  the  business  of  packaging,  marketing  and
distributing  natural dietary  supplements  consisting of Naturally High TM, the
Stuff TM and  Naturally  Klean R Herbal Tea,  all but the latter of which Belnik
owns (the "Products");

         WHEREAS, Belnik has an authorized  capitalization  consisting of 10,000
shares of common  stock,  no par value,  all of which are  presently  issued and
outstanding and held by the Shareholders equally (the "Stock");

         WHEREAS,  the  Shareholders  believe it to be in their best interest to
sell to Buyer all of the Stock in  accordance  with the terms and  conditions of
this Agreement;

         WHEREAS,  Buyer  believes  it to be in its best  interest to enter into
this Agreement to acquire all of the authorized,  issued and outstanding  common
stock of Belnik.

         NOW,  THEREFORE,  in consideration of the warranties,  representations,
covenants and agreements  contained herein,  and subject to the terms conditions
set forth herein, the parties hereto agree as follows:

                                    ARTICLE I

                           PURCHASE AND SALE OF SHARES
                           ---------------------------

         1.1 Sale and  Purchase of the Stock.  At the  Closing,  as  hereinafter
defined,  upon  and  subject  to the  terms  and  conditions  set  forth in this
Agreement,  Sellers  shall sell and  deliver  the Stock to Buyer and Buyer shall
purchase  the Stock from  Sellers and Buyer  shall then own all the  authorized,
issued and outstanding shares of Belnik.

         1.2 Purchase Price. In  consideration of the sale and delivery to Buyer
of the Stock, Buyer shall pay Sellers the sum of One Thousand and no/100 Dollars
($1,000.00),  $500.00  to Nikzad  and  $500.00  to Belfer to be paid by  Buyer's
corporate  check at the  Closing.  In  addition,  Buyer  shall  issue to Sellers
warrants to purchase up to a total of Twenty-One Thousand (21,000) shares (up to
10,500  shares to Nikzad and up to 10,500  shares to  Belfer) of the  restricted
common stock, $0.001
<PAGE>
par value per share,  of Seller (the  "Common  Stock") at an  exercise  price of
$1.00 per share in  substantially  the form  attached  hereto as  Exhibit A (the
"Warrants")  with one third of such  warrants,  or warrants  to  purchase  7,000
shares of Common  Stock,  vesting at the end of each of three  fiscal years from
the date of such  acquisition,  if Belnik generates pre-tax profits of $100,000,
$200,000, and $300,000 in fiscal years 1997, 1998, and 1999, respectively.

                                    ARTICLE 2
  
                                   THE CLOSING
                                   -----------

         2.1 The Closing.  As used herein,  the term "Closing" means the time at
which  Sellers  shall sell and deliver and Buyer shall  purchase the Stock.  The
Closing  shall take place on February 26, 1996,  at 10:00 a.m. at the  executive
offices of Buyer at 1719 W. University,  Tempe,  Arizona,  or at such other time
and place as the parties shall agree in writing (the "Closing Date").

         2.2      Deliveries and Other Acts at the Closing.

                  (a) At  the  Closing,  Sellers  shall  deliver  to  Buyer  the
                      following:

                           (i) Stock  certificates  evidencing  the Stock,  duly
                  endorsed  to  Buyer  or  by  a  duly   executed   stock  power
                  transferring the Stock to Buyer;

                           (ii) A duly  authorized  certificate  dated as of the
                  Closing  Date and signed by the  President  and  Secretary  of
                  Belnik to the effect that all  representations  and warranties
                  of  Belnik  herein  or  in  any  certificates,   or  documents
                  delivered  pursuant  hereto are true and  correct on and as of
                  Closing  Date with the same effect as if made on and as of the
                  Closing Date;

                           (iii) Such other  instruments  and  documents  as are
                  reasonably  requested by Buyer to evidence or  effectuate  the
                  transfer to Buyer of the Stock or to  evidence  or  effectuate
                  any other intent or purpose of the Agreement.

                  (b) At  the  Closing,  Buyer  shall  deliver  to  Sellers  the
                      following:

                           (i)  The  sum  of One  Thousand  and  no/100  Dollars
                  ($1,000.00) by Buyer's  corporate  checks  payable  $500.00 to
                  Nikzad  and  $500.00  to  Belfer  representing  the  aggregate
                  purchase price for the Stock; and

                           (ii) The Warrants issued 10,500 shares in the name of
                  Nikzad and a like amount issued in the name of Belfer.

                                        2
<PAGE>
                                    ARTICLE 3

                               COVENANTS OF BELNIK
                               -------------------

         Inspection  Rights.  During the period between execution hereof and the
Closing, Buyer and its agents, attorneys,  accountants and other representatives
shall have full access,  to all of Belnik's books and records.  Belnik agrees to
instruct  the  employees  of  Belnik  to  cooperate  fully  with  Buyer  and its
representatives and to provide any information requested.

                                    ARTICLE 4

                               COVENANTS OF BUYER
                               ------------------

         Confidentiality.   Buyer  shall  hold  in  confidence  all  information
proprietary  to Belnik  of which it  becomes  aware by reason of its  inspection
rights  described  in  Article 3 above  unless  such  information  is or becomes
generally  available other than by the action of Buyer or its representatives in
violation of this Agreement.

                                    ARTICLE 5

                         REPRESENTATIONS AND WARRANTIES
                         ------------------------------

         5.1  Representations  and Warranties of Sellers.  Sellers represent and
warrant to Buyer as follows:

                  (a) Belnik is a corporation  duly organized,  validly existing
and in good standing  under the laws of the State of Arizona,  is duly qualified
as a foreign corporation to transact business,  and is in good standing,  in all
other  jurisdictions  in  which  such  qualification  is  required,  and has all
necessary  corporate  power and authority to own its properties and other assets
and to carry on its business as now being conducted and presently proposed to be
conducted by it.

                  (b) The execution,  delivery and  performance of the Agreement
and the consummation of the transactions  contemplated hereby have been duly and
validly  authorized  by all  necessary  action on the part of Sellers,  and this
Agreement has been duly and validly  executed and delivered by Sellers and, upon
execution and delivery by Sellers,  will be the valid and binding  obligation of
Sellers, enforceable in accordance with its terms.

                  (c) The authorized  capital stock of Belnik consists of 10,000
shares of Common  Stock,  no par value per  share,  of which I 0,000  shares are
presently issued and outstanding.  Belnik has no other authorized or outstanding
stock or securities and has issued no other options, warrants or other rights to
acquire stock or any

                                        3
<PAGE>
beneficial  rights in stock of Belnik.  The Stock has been duly  authorized  and
validly  issued and is fully paid and  nonassessable,  was issued in  compliance
with all  applicable  state  and  federal  securities  laws,  and is held by the
Shareholders equally.

                  (d) Belnik has filed all tax  returns  required to be filed by
it and has paid all taxes shown due on such  returns as well as all other taxes,
assessments  and  governmental  charges  which have  become  due and  payable by
Belnik;

                  (e) Neither the  execution or delivery of this  Agreement,  or
any instrument  contemplated  hereby,  nor the  consummation of the transactions
contemplated  hereby and thereby,  nor the compliance  with terms and provisions
hereof and thereof, will conflict with or result in a breach of or default under
any  provision  of any  contract  or  agreement,  any law or any order,  ruling,
certificate,  license,  regulation or demand of any court, agency or tribunal to
which  Sellers  or Belnik,  or any of their  respective  property  or assets are
subject;

                  (f) Belnik possesses such licenses and permits as are adequate
for the conduct of its business;

                  (g) No approval,  consent or authorization of any governmental
authority is necessary in connection  with the execution and delivery by Sellers
of this Agreement, or any instrument contemplated hereby, or for the performance
by Sellers of any of the terms or conditions hereof or thereof;

                  (h) Sellers  have good and  marketable  title to the Stock and
Belnik has good and marketable title to its properties and assets,  in each case
subject to no mortgage,  pledge, lien, lease,  encumbrance or charge, other than
liens for current taxes and  assessments  not  delinquent and  encumbrances  and
liens  which arise in the  ordinary  course of  business  and do not  materially
impair  their  respective  ownerships  or uses of such  property or assets.  All
leases  pursuant  to which  Belnik  leases  real or  personal  property  and all
licenses  pursuant  to which it has  acquired  rights to  technology,  know-how,
patents,  developments  or the  like  are in good  standing  and are  valid  and
effective in accordance with their respective terms, and, to Sellers' knowledge,
there exists no default or other occurrence or condition which could result in a
material default or termination of any thereof;

                  (i) Belnik is not in  violation of any term of its Articles of
Incorporation or Bylaws or any term or provision of any mortgage,  indebtedness,
- -indenture, contract, agreement, instrument, judgment or decree, and to the best
of  Sellers'  knowledge  is not in  violation  of any  order,  statute,  rule or
regulation  applicable  to Belnik  where such  violation  would  materially  and
adversely  affect  Belnik.  The  execution,  delivery  and  performance  of  and
compliance  with this Agreement and the transfer of the Stock will not result in
any breach or violation of any of the terms of,

                                        4
<PAGE>
or conflict  with, or constitute a default  under,  or result in the creation or
imposition  of any lien  encumbrance  or charge  pursuant  to the terms of,  the
Articles of  Incorporation  or Bylaws of Belnik,  or any statute,  law,  rule or
regulation or any order, judgment,  decree, indenture,  mortgage, lease or other
agreement  to  which  Belnik  or the  Sellers,  or any of their  properties,  is
subject;
                  (j) There are no actions, suits, proceedings or investigations
pending or, to the knowledge of Belnik,  threatened,  against  Sellers or any of
its  properties  or assets before any court or  governmental  agency which might
result in any material and adverse  change in the property,  assets or financial
condition  of  Belnik  nor,  to the best  knowledge  of  Sellers  is  there  any
reasonable basis for any such action,  proceeding or investigation.  To the best
of Sellers' knowledge, Belnik is in compliance in all material respects with all
laws and regulations applicable to it, its properties and business;

                  (k)  Belnik  is  not  under  any  contractual   obligation  to
register,  under the Securities Act of 1933, as amended (the "Securities  Act"),
any of its presently  outstanding  securities or any of its securities which may
hereafter be issued;

                  (l)  Belnik  is not a  party  to any  contract,  agreement  or
instrument  or  subject  to any  judgment,  order,  writ,  injunction,  rule  or
regulation  which,  in the opinion of Sellers,  either is unduly  burdensome  or
substantially  and  adversely  affects its  business,  operations  or conditions
(financial or other) or, as presently anticipated,  will be unduly burdensome or
will  substantially  and adversely affect its business,  operations or condition
(financial or other); and

                  (m)  No   representation   or  warranty  of  Sellers  in  this
Agreement,  the certificates or documents delivered pursuant hereto contains any
untrue  statement  of a  material  fact or  omits  to state  any  material  fact
necessary to make such  representation or warranty not misleading.  There is, to
the best of  Sellers'  knowledge,  no fact which  materially  adversely  affects
Belnik or any of its  properties  or assets which has not been set forth in this
Agreement or the exhibits hereto.

         5.2  Representations of Buyer. Buyer represents and warrants to Sellers
as follows:

                  (a) Neither the execution or delivery of this Agreement or any
instrument   contemplated  hereby  nor  the  consummation  of  the  transactions
contemplated hereby and thereby will conflict with or result in the breach of or
default  under  any  contract  or  agreement,  any  law  or any  order,  ruling,
certificate,  license,  regulation or demand of any court, agency or tribunal to
which Buyer is subject.

                  (b) The  Agreement has been duly  authorized  and executed and
constitutes a valid and binding obligation of Buyer.

                                        5
<PAGE>
                                    ARTICLE 6

                           INVESTMENT REPRESENTATIONS
                           --------------------------

         In  connection  with the  purchase of the Stock,  Buyer  represents  to
Sellers the following:

         6.1  Investment.  Buyer is purchasing  the Stock for investment for its
own account only and not with a view to, or for resale in connection  with,  any
"distribution"   thereof  within  the  meaning  of  the  Securities  Act.  Buyer
understands  that the Stock has not been registered  under the Securities Act by
reason of a specific exemption therefrom.

         6.2  Restrictions  on Transfer  Under  Securities  Act.  Buyer  further
acknowledges  and understands  that the Stock must be held  indefinitely  unless
subsequently  registered  under the  Securities  Act or unless an exemption from
such registration is available. Moreover, Buyer understands that Belnik is under
no obligation to register the Stock.  In addition,  Buyer  understands  that the
certificate evidencing the Stock will be imprinted with a legend which prohibits
the transfer of the Stock unless it is registered  or unless Belnik  receives an
opinion of counsel that such registration is not required.

                                    ARTICLE 7

                            MISCELLANEOUS PROVISIONS
                            ------------------------

         7.1 Further  Assurances.  From time to time after the Closing,  each of
the parties  hereto shall  execute and deliver to the other parties such further
instruments  or documents as may be reasonably  requested in order to consummate
the transactions set forth herein.

         7.2 Notice. Any notice or other communication  required or permitted to
be given to the parties  hereto  shall be deemed to have been given if delivered
by hand or forty-eight  (48) hours after being mailed by certified or registered
United States mail, return receipt  requested,  first-class  postage pre-paid or
twelve  (12)  hours  after  the time  dispatched  by  telegram  or by  facsimile
transmission in each case addressed as follows:

             (a)      If to Buyer:

                      M. D. Labs, Inc.
                      1719 W. University, Suite 187
                      Tempe, Arizona 85281
                      Attention: Fradjollah "Fred" Djahandideh, Vice President

                                        6
<PAGE>
                      With a copy to:

                      Robert K. Rogers
                      Robert K. Rogers & Associates
                      5725 N. Scottsdale Road, Suite 190
                      Scottsdale, Arizona 85250

             (b)      If to Sellers:

                      Hooman Nikzad
                      Todd P. Belfer
                      1719 W. University, Suite 187
                      Tempe, Arizona 85281

or such other addresses as the parties hereto may from time to time designate in
writing.

         7.3 Entire  Agreement.  This  Agreement,  together  with the  exhibits,
embodies the entire representations and warranties,  covenants and agreements of
the parties in respect to the subject  matter  hereof and  supersedes  all prior
agreements, covenants, whether oral or written. No representations,  warranties,
covenants,  understandings  or agreements or otherwise in relation thereto exist
between the parties except as expressly set forth herein.

         7.4 Successors and Assigns.  This Agreement  shall inure to the benefit
of and be  binding  upon the  parties  hereto  and their  respective  executors,
administrators,  heirs, successors.  assigns and personal representatives as the
case  may be;  provided,  however,  none of the  parties  hereto  may  make  any
assignment  of this  Agreement  or any  interest  therein by operation of law or
otherwise without the prior written consent of the other party, such consent not
to be unreasonably withheld by such other party.

         7.5 Third Parties, Amendment,  Termination.  Except as specifically set
forth or referred to herein,  nothing  expressed or implied in this Agreement is
intended to or shall be construed to confer upon or give to any person,  firm or
corporation  other  than the  parties  hereto  and  their  respective  permitted
successors, assigns or personal representatives, any rights or remedies under or
by reason of this  Agreement.  This  Agreement  may not be amended or terminated
orally but only as expressly provided herein or by an instrument in writing duly
executed by the parties hereto.

         7.6  Attorneys'  Fees. In the event any legal action or  arbitration or
other  proceeding  is  brought  for  the  enforcement  of this  Agreement  or in
connection  with,  any other  provisions of this  Agreement,  the successful and
prevailing party shall be entitled to reasonable attorneys' fees and other costs
incurred in such action or proceeding.

                                        7
<PAGE>
         7.7  Interpretation  and  Construction.  The captions set forth in this
Agreement are for  convenience  only and shall not be considered as part of this
Agreement  or as in any way  limiting  or  amplifying  the terms and  provisions
hereof.

         7.8  Governing  Law  and  Jurisdiction.  This  Agreement  shall  in all
respects be  interpreted,  construed and governed by and in accordance  with the
laws of the State of  Arizona.  In the event of suit,  action or  proceeding  to
enforce any and all rights and  obligations  under this  Agreement,  the parties
agree  that  the  proper  jurisdiction  and  venue  for  such  suit,  action  or
proceedings is a court of competent  jurisdiction  located in Phoenix,  Maricopa
County,  State of Arizona,  submit to the  jurisdiction  of any such court,  and
waive and  agree not to  assert,  by way of motion or  otherwise,  that any such
suit, action or proceeding is brought in an inconvenient forum or that the venue
of the suit, action or proceeding is improper.

         7.9  Survival  of  Warranties.  The  warranties,   representations  and
covenants  contained in or made  pursuant to this  Agreement  shall  survive the
execution and delivery of this Agreement, and the Closing.

         7.10  Counterparts.  More than one counterpart of this Agreement may be
executed by the parties hereto and each counterpart shall be deemed an original.
IN WITNESS  WHEREOF,  the parties  hereto have duly caused this  Agreement to be
duly executed as of the day and year first above written.

                                 Sellers:

                                 /s/ Hooman Nikzad
                                 -----------------------------
                                 Hooman Nikzad

                                 /s/ Todd P. Belfer
                                 -----------------------------
                                 Todd P. Belfer


                                 Buyer:

                                 M. D. Labs, Inc.,
                                  a Delaware corporation

                                 By: /s/ F. Djahandideh
                                     ---------------------------------
                                     Fradjollah "Fred" Djahandideh
                                     Vice President

                                        8

                               PURCHASE AGREEMENT



         THIS  AGREEMENT is dated the 12th day of December,  1995,  by and among
HOUSTON ENTERPRISES,  L.L.C., an Arizona limited liability company ("Houston") ;
MARVIN D. BRODY and NANCY P. BRODY, husband and wife (collectively, "Sellers") ,
HARVEY A. BELFER,  a married man  ("Harvey"),  TODD P. BELFER,  an unmarried man
("Todd")  ,  HOOMAN  NIKZAD,   an  unmarried  man  ("Hooman"),   and  FRADJOLLAH
DJAHANDIDEH, a married man ("Fred").

                                 R E C I T A L S
                                 - - - - - - - - 

         A.  Sellers  are  the  owners  of  seventeen  and  five-tenths   (17.5)
investment Units (collectively, the "Units") in Houston.

         B. Harvey, Todd, Hooman and Fred (collectively,  the "Purchasers") and,
individually,  a "Purchaser") each wish to purchase one-fourth (1/4) of Sellers'
Units (i. e. , four and three eighths  [4.375] Units each and Sellers  desire to
sell to Purchasers  all of such Units,  upon the terms and  conditions set forth
herein.

         NOW,  THEREFORE,  in consideration of the mutual promises and covenants
set forth herein, the parties hereby agree as follows:

         1. PURCHASE AND SALE. Sellers hereby sell to Purchasers, and Purchasers
hereby purchase from Sellers, all of Sellers, Units, as follows:

                                                            Total 
                                                            ----- 
         Purchaser       # of Units Purchased           Purchase Price
         ---------       --------------------           --------------
      
         Harvey                  4.375                     $75,000
         Todd                    4.375                     $75,000
         Hooman                  4.375                     $75,000
         Fred                    4.375                     $75,000
                                 -----                     -------

              TOTAL:             17.500                    $300,000
                                 ======                    ========

         2. CONSIDERATION.

                  (a)  Purchase  Price.  Upon  the  terms  and  subject  to  the
conditions  contained in this Agreement,  in consideration  for the Units and in
full  payment  therefor,  Purchasers  will pay the  purchase  price set forth in
paragraph 3(b) below.
<PAGE>
                  (b) Amount.  The total purchase price  ("Purchase  Price") for
the  Units  shall  be  equal  to a  total  of  Three  Hundred  Thousand  Dollars
($300,000.00),  payable  Seventy-five  Thousand  Dollars  ($75,000.00)  by  each
Purchaser.

                  (c) Method of Payment.  Subject to the provisions of paragraph
7(d) below, the Purchase Price will be paid in the following manner:

                           (1) Two Hundred Thousand Dollars ($200,000.00) of the
Purchase Price will be paid, in cash, on December 12, 1995,  with each Purchaser
paying  a  one-fourth   (1/4)  portion   thereof,   or  Fifty  Thousand  Dollars
($50,000.00).

                           (2) The One  Hundred  Thousand  Dollar  ($100,000.00)
balance shall be paid, in full and in cash, on or before January 31, 1996,  with
each Purchaser being primarily responsible for a one-fourth (1/4) share thereof,
or Twenty-five  Thousand Dollars  ($25,000.00) each.  However,  in the event any
particular  Purchaser  should not  fulfill  his  primary  obligation  to pay his
Twenty-five Thousand Dollar ($25,000.00)  deferred balance, all other Purchasers
shall be jointly and severally liable to Sellers for payment of such amount.

         3.  REPRESENTATIONS,  WARRANTIES AND COVENANTS OF SELLERS.  The Sellers
jointly and severally represent, warrant and covenant to Purchasers as follows:

                  (a) The  execution  and delivery of this  Agreement  have been
duly  authorized  and  approved  by the  Sellers.  Each  Seller  executing  this
Agreement is fully  authorized  to do so. This  Agreement has been duly executed
and  delivered  by all of the  Sellers  and it  constitutes  a valid and legally
binding and  enforceable  obligation of each such party in  accordance  with its
terms.

                  (b) Ownership of Purchased Assets.

                           (1)  Except as  specifically  provided  herein to the
contrary,  and  except  for any which may have been  incurred  by Houston or the
other members  thereof,  the Sellers own the Units free and clear of any and all
judgments, actions, claims, charges,  liabilities,  liens or encumbrances of any
kind or nature whatsoever (collectively, "Claims")

                           (2) The Sellers  have not pledged any of the Units as
collateral for any loans,  and they have good and marketable title to the Units.
Except as  specifically  provided  herein to the  contrary,  and  except for any
Claims which may have
                                        2
<PAGE>
been placed  thereon or incurred by Houston or the other members  thereof,  each
Seller has the  complete and  unrestricted  power and the  unqualified  right to
sell,  assign,  transfer and deliver to Purchasers title to the Units,  entirely
free and clear of any and all Claims.

                           (3)  Upon  the  Closing  and   consummation  of  this
transaction,  Purchasers  shall be the  owners of the Units,  entirely  free and
clear  of any  and all  Claims  of any  kind or  nature  whatsoever  (except  as
specifically provided herein to the contrary).

                  (c) Action Required to be Taken by Sellers.

                           (1) All  actions  required to be taken by each of the
Sellers  under this  Agreement  as of the Closing Date have been or will be duly
taken prior to the Closing Date.

                           (2) This Agreement is a valid and binding  obligation
of all of the Sellers and is. enforceable against Sellers in accordance with its
terms and conditions.

                           (3) Each Seller has full power and authority to enter
into this Agreement, to perform his or her respective obligations hereunder, and
to consummate the transactions contemplated hereby.

                           (4)  Each   Seller  has  taken  all   necessary   and
appropriate action with respect to the execution and delivery of this Agreement,
and this  Agreement  constitutes  valid and binding  obligations  of each Seller
enforceable in accordance with its terms.

                           (5) The execution  and delivery of this  Agreement by
Sellers and the  consummation of the  transactions  contemplated  hereby and the
compliance with the terms hereof by them presently do not, and as of the Closing
Date  will  not,  conflict  with or  result  in a breach  of any  terms  of,  or
constitute a default under any material agreement,  obligation, or instrument to
which any one or more of the  Sellers  is a party or by which any one or more of
them is bound.

                           (6)  No  consent,  approval,  order,   authorization,
registration,  qualification,  designation,  declaration,  or  filing  with  any
federal,  state, local, or provincial  governmental authority or any third party
is  required  in  connection  with  the   consummation  by  any  Seller  of  the
transactions contemplated hereunder.
                                        3
<PAGE>
                  (d) Conflicts.  None of the agreements or  undertakings of any
Seller under this Agreement is or will be in, conflict with, in violation of, or
prohibited  under the terms of any  contract,  agreement  or  obligation  of any
Seller, or any governmental  authorizations or judgments or, to the knowledge of
the Sellers, any laws, rules, regulations or judgments.

                  (e) Complete Disclosure.

                           (1)  Each  of  the  representations,  warranties  and
covenants of each Seller pursuant to this Agreement shall be true,  accurate and
correct as of the date hereof and as of the Closing Date.

                           (2) The copies of all instruments,  agreements, other
documents  or written  information  (including  the  exhibits  attached  to this
Agreement)  delivered to  Purchasers  by or on behalf of any Seller are complete
and correct in all material respects as of the date of this Agreement, and shall
be complete and correct in all material respects as of the Closing Date.

                  (f) Brokerage Fees.  There is no obligation on the part of, or
incurred  by any of, the  Sellers to pay any fees or  expenses  of any broker or
finder  in  connection  with  the  origin,  negotiation,  or  execution  of this
Agreement or in connection with any of the transactions contemplated hereby.

                  (g) Truthfulness of Representations.

                           (1)  Except as  specifically  provided  herein to the
contrary,  no  representation,  warranty  or  covenant  of any  Seller  in  this
Agreement, and no statement, exhibit or certificate furnished or to be furnished
to Purchasers  pursuant to this Agreement or in connection  with the transaction
contemplated hereby includes any misstatement of material fact or omits to state
any fact necessary to render the facts stated therein not misleading in light of
the circumstances relevant to such representation, warranty or covenant.

                           (2)   Each   of  the   representations,   warranties,
covenants, agreements, statements, exhibits and certificates of Sellers pursuant
to this Agreement shall be true, accurate and complete as of the date hereof and
as of the Closing Date.

                           (3) The copies of all instruments,  agreements, other
documents  and written  information  (including  the  exhibits  attached to this
Agreement)  delivered  to  Purchasers  by or on behalf of any one or more of the
Sellers are complete and correct in all material respects as of the date of this
Agreement.
                                        4
<PAGE>
                  (h) Knowledgeable Sellers. Sellers each possess such knowledge
and  experience  in financial  and business  matters  pertaining  to the type of
transaction  conducted  hereunder,  and  otherwise,  that  they are  capable  of
evaluating  the  merits and risks of a sale of the Units to  Purchasers  and the
other transactions described herein or otherwise contemplated hereunder.

                  (i)   Effect   of   Representations   and   Warranties.    The
representations  and warranties of Sellers  contained in this Agreement shall be
true and  correct.  as of the  signing of this  Agreement  and as of the Closing
Date, as though such  representations  and warranties were made again at, and as
of, the Closing Date.

         4. REPRESENTATIONS,  WARRANTIES AND COVENANTS OF PURCHASERS. Purchasers
hereby jointly and severally represent, warrant and covenant to Sellers that:

                  (a)  Authorization.  Purchasers  have  full  legal  power  and
authority to enter into this Agreement,  to perform their respective obligations
hereunder,  and to consummate the transactions  contemplated hereby.  Purchasers
have taken all  necessary  and  appropriate  legal  action  with  respect to the
execution and delivery of this Agreement, and this Agreement constitutes a valid
and binding obligation of Purchasers enforceable in accordance with its terms.

                  (b)  Compliance  with Other  Instruments.  The  execution  and
delivery  of  this  Agreement  by  Purchasers,   and  the  consummation  of  the
transactions  contemplated  hereby,  and the compliance with the terms hereof by
them do not, or as of the Closing  Date will not,  conflict  with or result in a
breach of any terms of, or  constitute a default  under any material  agreement,
obligation, or instrument to which they (or any one or more of them) are a party
or by which they (or any one or more of them) are bound.

                  (c) Brokerage  Fees.  None of the  Purchasers are obligated to
pay any fees or expenses of any broker or finder in connection  with the origin,
negotiation,  or execution of this  Agreement or in  connection  with any of the
transactions 'contemplated hereby.

                  (d)   Absence  of  Other   Warranties.   It  is   specifically
acknowledged that, except as otherwise set forth herein, Sellers do not make and
have not made any  warranty  or  representation  concerning  Houston's  business
(including,  but not limited to, the implied  warranties of  merchantability  or
fitness for a particular purpose). Purchasers are presently owners of,
                                        5
<PAGE>
managers of, and/or employed by Houston in Houston's  business and are therefore
fully  familiar with the nature,  scope and volume of such business and with the
condition, utility and value of the business. Purchasers have made an inspection
of Houston's business and otherwise investigated said business to their full and
complete  satisfaction  and Sellers are  released  from all  responsibility  and
liability  regarding  the  business,   other  than  arising  from  the  specific
warranties  and   representations   of  Sellers  contained  herein.   Purchasers
acknowledge  that  Sellers  have made no  representation  or  warranty  that the
customers,  clients or suppliers of Houston will remain customers,  clients,  or
suppliers  of Houston or that a  particular  level of income can be derived from
Houston's business.

         5. CLOSING.

                  (a) Closing Date.  Subject to  satisfaction  of the conditions
set forth in paragraph 6 below, or Sellers' , Purchasers' and Houston's  written
waiver or extension (from time to time) of same, the  transactions  contemplated
by this  Agreement  shall be completed  on the 12th day of  December,  1995 (the
"Closing  Date"),  with the  Closing  taking  place at the  offices of  Houston,
located at 3658 East Chipman Road,  Phoenix,  Arizona,  85040,  or at such other
time or place as may be agreed to in writing by Purchasers, Sellers and Houston.
The "Closing"  shall mean the time and place at which will occur the  deliveries
to be made by the parties hereto as of the Closing Date in accordance  with this
Agreement.

                  (b)  Deliveries  by Sellers.  At the  Closing,  Sellers  shall
deliver to Purchasers all duly and properly  executed (where  applicable) , four
(4) Assignment of Membership Interest and Agreement of Assignee documents in the
form of Exhibits A-1 through A-4 attached hereto and incorporated herein by this
reference, conveying the Units to Purchasers.

                  (c) Deliveries by Purchasers. At the Closing, Purchasers shall
deliver,  or cause to be delivered,  to Sellers,  all duly and properly executed
(where applicable), the following documents:

                           (1) certified copies of resolutions of the respective
members of Houston  ratifying,  authorizing  and approving of this Agreement and
all related transactions in regards hereto; and

                           (2)  cash  in  the  amount  of Two  Hundred  Thousand
Dollars  ($200,000.00),  representing the initial payment of the Purchase Price,
as provided in paragraph 2(c)(1) above.
                                        6
<PAGE>
                  (d) Further  Assurances.  At or after the Closing,  each party
shall prepare,  execute,  and deliver, at the preparer's  expense,  such further
instruments  of conveyance,  sale,  assignment,  or transfer,  and shall take or
cause to be taken such other or further  action,  as any party shall  reasonably
request of any other party at any time or from time to time in order to perfect,
confirm,  or evidence in Purchasers  title to all or any part of the Units or to
consummate, in any other manner, the terms and provisions of this Agreement.

         6.  CONDITIONS  PRECEDENT TO  PURCHASERS'  OBLIGATIONS.  Each and every
obligation  of Purchasers to be performed at the Closing shall be subject to the
satisfaction  as of or  before  the  Closing  Date of the  following  conditions
(unless waived or extended in writing by Purchasers):

                  (a)  Representations  and Warranties.  The representations and
warranties of the Sellers set forth in paragraph 3 of this Agreement  shall have
been true and  correct  when made and shall be true and correct at and as of the
Closing Date as if such representations and warranties were made as of such date
and time.

                  (b) Performance of Agreement. All covenants,  conditions,  and
other  obligations  under this  Agreement  which are to be performed or complied
with by the Sellers  prior to the Closing  shall have been fully  performed  and
complied  with at or prior to the Closing  Date,  including  the delivery of the
instruments and documents described in paragraph 5(b) hereof.

                  (c) Absence of Governmental or other Objection. There shall be
no pending or threatened  lawsuit  challenging  this  transaction by any body or
agency of the federal,  state, or local  government or by any 'third party,  and
the consummation of this transaction  shall not have been enjoined by a court of
competent jurisdiction as of the Closing Date.

                  (d) Approval of  Documentation.  The form and substance of all
certificates,  instruments,  opinions,  tax returns,  financial statements,  and
other documents  delivered or to be delivered to Purchasers under this Agreement
shall  be  satisfactory  to  Purchasers  and  their  counsel  in all  reasonable
respects.

         7. INDEMNIFICATION.

                  (a) Survival of  Representations,   Warranties  and Covenants.
Notwithstanding  any investigation  conducted at any time with regard thereto by
or on behalf of any  party,  all  representations,  warranties,  covenants,  and
agreements of each
                                        7
<PAGE>
party in this Agreement shall survive the execution,  delivery,  and performance
of this Agreement. All representations and warranties of each party set forth in
this  Agreement  shall be deemed to have been made again by such party at and as
of the Closing Date.

                  (b)   Indemnification   by  Sellers.   Sellers,   jointly  and
severally,  shall indemnify  Purchasers and hold them harmless after the Closing
Date, against and in respect of any and all of the following:

                           (1) any and all damage or deficiency  resulting  from
any misrepresentation,  breach of warranty, or breach, default or nonfulfillment
of any condition or obligation on the part of any one or more of them under this
Agreement,   or  any  exhibit  or  schedule  to  this   Agreement  or  from  any
misrepresentation  in or  omission  from any  certificate  or  other  instrument
furnished  to the  Purchasers  by any one or more  of  them or on  their  behalf
(collectively, "Damages");

                           (2) any and all  liabilities of or claims against any
Seller, or which affect or impair title to the Units, including, but not limited
to,  any of such  matters  which  are  disclosed  herein or in the  Exhibits  or
Schedules attached hereto (collectively, the "Liabilities"); and

                           (3) all demands,  assessments,  judgments,  costs and
legal and other expenses  arising from or in connection  with any action,  suit,
proceeding or claim incident to any of the foregoing  (collectively,  "Costs and
Expenses").

                  (c) On Demand  Reimbursement  by Sellers.  Purchasers shall be
reimbursed  by the Sellers on demand for any payment  made by any one or more of
them or loss,  damage,  cost or expense.  suffered by any one or more of them at
any time after the Closing Date with respect to any  liability or claim to which
the foregoing  indemnities relate or otherwise arising out of or relating to any
Damages,  Liabilities, or Costs and Expenses incurred or paid by or on behalf of
any Purchaser.

                  (d) Effect of Seller Defaults.  Notwithstanding any provisions
hereof which may be interpreted to the contrary:

                           (1)  In the  event  that  any  Seller  is in  default
hereunder or under any other  document  executed in  connection  herewith in any
respect  whatsoever (an "Uncured  Default") or in the event that any one or more
of the  Sellers  has any  unfulfilled  indemnification  obligations  under  this
paragraph   7   or   otherwise   (collectively,   "Unfulfilled   Indemnification
Obligations"),  then  Purchasers  may offset,  against any unpaid portion of the
Purchase
                                        8
<PAGE>
Price, or any other amount otherwise  payable or transferable to any one or more
of them the amount or amounts owed by Sellers to  Purchasers  as a result of the
Uncured Default(s) and Unfulfilled  Indemnification  Obligations  (collectively,
the "Total Unfulfilled Seller Obligations").

                           (2)  If  the  Total  Unfulfilled  Seller  Obligations
should  exceed the total of any unpaid  portion of the  Purchase  Price or other
amount otherwise  payable  hereunder or under any other agreement on the part of
Purchasers in connection  herewith,  then, unless Purchasers  otherwise agree in
writing,  no  additional  Purchase  Price or other  amounts  will be  payable or
transferable  and the  Sellers  shall  remain  jointly and  severally  liable to
Purchasers  for the  amount by which the Total  Unfulfilled  Seller  Obligations
exceed  the  unpaid  Purchase  Price  and other  amounts  otherwise  payable  or
transferable hereunder.

                  (e)  Indemnification  by Purchasers.  Purchasers,  jointly and
severally,  shall  indemnify  Sellers and hold them  harmless  after the Closing
Date, against and in respect of any and all of the following:

                           (1) any and all damage or deficiency  resulting  from
any misrepresentation,  breach of warranty, or breach, default or nonfulfillment
of any condition or obligation on the part of any one or more of them under this
Agreement,   or  any  exhibit  or  schedule  to  this   Agreement  or  from  any
misrepresentation  in or  omission  from any  certificate  or  other  instrument
furnished  to the  Sellers  by any  one or  more  of  them  or on  their  behalf
(collectively, "Seller Damages"); and

                           (2) all demands,  assessments,  judgments,  costs and
legal and other expenses  arising from or in connection  with any action,  suit,
proceeding  or claim  incident to any of the  foregoing  (collectively,  "Seller
Costs and Expenses").

                  (f)  Additional  Indemnification  by  Purchasers  and Houston.
Houston and Purchasers also jointly and severally agree to indemnify, defend and
hold harmless Sellers from and against any and all liabilities,  losses, claims,
damages,  costs and expenses (including  reasonable attorneys fees) arising from
any and all aspects of Houston's operations,  whether post-Closing or preClosing
and specifically  including,  but not necessarily limited to, any and all claims
by any  customers  or employees or by any  governmental  agency,  but not to the
extent  that the claim or action  being  asserted  arises out of any  actions or
omissions on the part of the Sellers.
                                        9
<PAGE>
                  (g) On Demand  Reimbursement  by Purchasers.  Sellers shall be
reimbursed  by the  Purchasers on demand for any payment made by any one or more
of them or loss, damage,  cost or expense suffered by any one or more of them at
any time after the Closing Date with respect to any  liability or claim to which
the  indemnities  described  in  paragraphs  7(e) and 7(f)  relate or  otherwise
arising out of or relating to any Seller  Damages or Seller  Costs and  Expenses
incurred or paid by or on behalf of any Seller.

                  (h) Exhibits and  Schedules  Included as Well. As used in this
paragraph 7, any reference to a representation,  warranty, or covenant contained
in any  paragraph  of this  Agreement  shall  include  any  Exhibit or  Schedule
relating to such paragraph.

                  (i) Remedies Cumulative.  Except as herein expressly provided,
the  remedies  provided  herein  shall be  cumulative  and  shall  not  preclude
assertion by an aggrieved  party of any other rights or the seeking of any other
remedies against any other party hereto.

         8. MISCELLANEOUS PROVISIONS.

                  (a) Notice. All notices and other  communications  required or
permitted  under this  Agreement  shall be in writing and shall be  delivered or
sent to the parties at their respective addresses as set forth below, or at such
other  address that they  designate by notice to all other parties in accordance
with this paragraph 8(a). Any party delivering  notice to any one or more of the
Sellers shall deliver it to:

                           Marvin D. Brody and Nancy P. Brody
                           5632 N. Camelback Canyon Drive
                           Phoenix, AZ  85018

                           with a copy to:

                           Thomas G. Georgiou, Esq.
                           THOMAS G. GEORGIOU, P.C.
                           2929 E. Camelback Road, Suite 215
                           Phoenix, AZ 85016

Any party delivering notice to Harvey shall deliver it to:

                           Harvey A. Belfer
                           3833 N. 60th Place
                           Scottsdale, AZ 85251
                                       10
<PAGE>
                          with a copy to:

                          Robert K. Rogers, Esq.
                          5725 N. Scottsdale Road, Suite 190
                          Scottsdale, AZ 85250

Any party delivering notice to Todd shall deliver it to:

                          Todd P. Belfer
                          4552 N. 52nd Place
                          Phoenix, AZ 85018

                          with a copy to:

                          Robert K. Rogers, Esq.
                          5725 N. Scottsdale Road, Suite 190
                          Scottsdale, AZ 85250

Any party delivering notice to Hooman shall deliver it to:

                          Hooman Nikzad
                          c/o 1719 W. University, #187
                          Tempe, AZ 85281

                          with a copy to:

                          Robert K. Rogers, Esq.
                          5725 N. Scottsdale Road, Suite 190
                          Scottsdale, AZ 85250

Any party delivering notice to Fred shall deliver it to:

                          Fred Djahandideh
                          c/o 1719 W. University, #187
                          Tempe, AZ 85281

                          with a copy to:

                          Robert K. Rogers, Esq.
                          5725 N. Scottsdale Road, Suite 190
                          Scottsdale, AZ 85250

Any party delivering notice to Houston shall deliver it to:

                          Todd P. Belfer, Manager
                          Hooman Nikzad, Manager
                          Houston Enterprises, L.L.C.
                          c/o 1719 W. University, #187
                          Tempe, AZ 85281

                                           11
<PAGE>
                              with a copy to:

                              Robert K. Rogers, Esq.
                              5725 N. Scottsdale Road, Suite 190
                              Scottsdale, AZ 85250

All notices and communications shall be deemed to have been received: (1) in the
case of  personal  delivery,  on the date of such  delivery;  (2) in the case of
telex  or  facsimile  transmission,  on the date on which  the  sender  receives
confirmation by telex or facsimile transmission that such notice was received by
the addressee, provided that a copy of such transmission is additionally sent by
mail as set forth in (4) below; (3) in the case of overnight air courier, on the
second  business  day  following  the day sent,  with  receipt  confirmed by the
courier;  and (4) in the case of mailing by first class  certified or registered
mail,  postage prepaid,  return receipt requested,  on the date of delivery,  as
evidenced by the certified or registered mail receipt.

                  (b)  Entire  Agreement.   This  Agreement,  the  exhibits  and
schedules  hereto,  and the  documents  referred  to herein  embody  the  entire
agreement and  understanding  of the parties  hereto with respect to the subject
matter  hereof,  and  supersede  all prior and  contemporaneous  agreements  and
understandings, oral or written, relative to said subject matter.

                  (c) Binding Effect; Assignment. This Agreement and the various
rights and  obligations  arising  hereunder shall inure to the benefit of and be
binding  upon the  parties  hereto,  their  successors  and  assigns;  provided,
however,  that no  obligations  of any party  hereunder  shall be transferred or
assigned  without the prior written consent of all other parties  hereto,  which
may be withheld or delayed in their sole and absolute discretion.

                  (d) Construction.  The language in all parts of this Agreement
shall in all cases be construed as a whole according to its fair meaning and not
strictly for nor against any party.  The  paragraph  headings  contained in this
Agreement  are for  reference  purposes  only and will not affect in any way the
meaning or  interpretation  of this  Agreement.  All terms used in one number or
gender  shall be  construed to include any other number or gender as the context
may require.  The parties agree that each party has reviewed this  Agreement and
has had the  opportunity  to have  counsel  review the same and that any rule of
construction  to the effect  that  ambiguities  are to be  resolved  against the
drafting  party shall not apply in the  interpretation  of this Agreement or any
amendment or any exhibits thereof.
                                       12
<PAGE>
                  (e)  Expenses  of  Transaction.   Except  for  all  reasonable
attorney,  accounting  and  related  professional  fees of any  party  hereto in
drafting and executing this  Agreement  (which shall be paid in full by Houston)
and except as may  otherwise be  specifically  provided  herein to the contrary,
each  party  shall  bear its own  costs and  expenses  in  connection  with this
Agreement and the transactions contemplated hereby.

                  (f) Amendments;  Waivers;  Consents. This Agreement may not be
changed, amended, terminated, augmented, rescinded, or discharged (other than by
performance),  in whole or in part,  except by a writing  executed by all of the
parties  hereto,  and no waiver of any of the  provisions  or conditions of this
Agreement  or any of the rights of a party  hereto shall be effective or binding
unless such waiver  shall be in writing and signed by the party  claimed to have
given or  consented  thereto.  Except to the extent that a party hereto may have
otherwise  agreed in writing,  no waiver by that party of any  condition of this
Agreement  or  breach  by  any  other  party  of  any  of  its   obligations  or
representations  hereunder or  thereunder  shall be deemed to be a waiver of any
other  condition  or  subsequent  or  prior  breach  of the  same  or any  other
obligation or  representation  by the other party,  nor shall any forbearance by
the first  party to seek a remedy for any  noncompliance  or breach by the other
party be deemed to be a waiver by the first  party of its  rights  and  remedies
with respect to such noncompliance or breach.

                  (g) Third-Party  Beneficiaries.  Except as otherwise expressly
provided  for in this  Agreement,  nothing  herein,  expressed  or  implied,  is
intended  or shall be  construed  to confer  upon or give to any  person,  firm,
corporation,  or legal  entity,  other  than the  parties  hereto,  any  rights,
remedies, or other benefits under or by reason of this Agreement.

                  (h) Counterparts. This Agreement may be executed in any number
of counterparts,  each of which shall be deemed an original as against any party
whose signature appears thereon,  and all of which shall together constitute one
and the same  instrument.  This Agreement  shall become binding when one or more
counterparts hereof,  individually or taken together,  shall bear the signatures
of all the parties reflected hereon as the signatories.

                  (i)  Severability.  In the event any term or provision of this
Agreement  is declared  by a court of  competent  jurisdiction  to be invalid or
unenforceable  for any reason,  this  Agreement  shall  remain in full force and
effect, and either (1) the invalid or unenforceable  provision shall be modified
to the minimum extent  necessary to make it valid and enforceable or (2) if such
a modification is not possible, this Agreement shall be interpreted
                                       13
<PAGE>
as if such invalid or unenforceable provision were not a part hereof.

                  (j)  Governing  Law and  Venue.  This  Agreement  shall in all
respects be construed in  accordance  with and governed by the laws of the State
of  Arizona.  Venue  for any  litigation  or other  proceedings  affecting  this
Agreement  shall be in Maricopa  County,  Arizona  Superior  Court or the United
States District Court for the District of Arizona, Phoenix Division.

                  (k)  Enforcement.  In the event of any  default on the part of
any party  hereto,  this  Agreement  may be enforced  by an action for  specific
performance or other  appropriate  remedy authorized under the laws of the State
of  Arizona.  Should any party  breach any of the terms and  conditions  of this
Agreement, or any other documents executed in connection herewith, necessitating
the filing of a lawsuit for damages,  specific  performance  or any other remedy
allowed  under the laws of the State of Arizona,  then,  and in that event,  the
prevailing party in such lawsuit shall be entitled to reasonable attorneys, fees
that shall be determined by the court.

                  (l) Indulgences. Neither the failure nor the delay on the part
of any party to  exercise  any  right,  remedy,  power or  privilege  under this
Agreement  shall  operate as a waiver  thereof,  nor shall any single or partial
exercise of any right,  remedy,  power or privilege preclude any other or future
exercise of the same or of any other  right,  remedy,  power or  privilege,  nor
shall any waiver of any right,  remedy,  power or privilege  with respect to any
occurrence  be construed as a waiver of such right,  remedy,  power or privilege
with respect to any other occurrence.  No waiver shall be effective unless it is
in writing and is signed by the party asserted to have granted such waiver.

         9. LIMITATION ON SELLER REPRESENTATIONS AND WARRANTIES. Notwithstanding
any  provisions  hereof  which  may  be  interpreted  to  the  contrary,  it  is
specifically  acknowledged  and agreed that Sellers make no  representations  or
warranties  whatsoever  with respect to the operation of Houston or with respect
to any action taken by Houston or by its managers,  agents or employees,  due to
the fact that  Sellers  were not  involved in the  operation  or  management  of
Houston but, rather, such matters were handled by the Purchasers hereunder.  The
purpose of this limitation is to reflect the parties' mutual  intention that the
Sellers  shall  only be  responsible  for their own acts or  omissions,  without
having any responsibility for other matters or issues.
                                       14
<PAGE>
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed as of the 12th day of December, 1995.

            SELLERS:                          HOUSTON:

/s/ Marvin D. Brody                           
- ---------------------------                   HOUSTON ENTERPRISES, L.L.C., an 
Marvin D. Brody                               Arizona limited liability company

/s/ Nancy P. Brody                            By /s/ Todd P. Belfer
- ---------------------------                      ------------------------------
Nancy P. Brody                                    Todd P. Belfer, Manager

                                              By /s/ Hooman Nikzad
                                                 ------------------------------
Purchasers:                                       Hooman Nikzad, Manager

/s/ Harvey A. Belfer
- --------------------------
Harvey A. Belfer, Member

/s/ Todd P. Belfer
- --------------------------
Todd P. Belfer, Member

/s/ Hooman Nikzad
- --------------------------
Hooman Nikzad, Member

/s/ Fradjollah Djahandideh
- --------------------------
Fradjollah Djahandideh, Member

                        ACCEPTANCE BY PURCHASER SPOUSES:

         By  signing  below,   the  undersigned   SANDRA  H.  BELFER  and  URSLA
DJAHANDIDEH,  spouses of Purchasers HARVEY A. BELFER and FRADJOLLAH DJAHANDIDEH,
respectively,   hereby  signify  their  acceptance  of  the  foregoing  Purchase
Agreement  and  all of its  provisions  (including,  but  not  limited  to,  the
indemnification  provisions of paragraph 7 thereof) and the undersigned  further
agree to be fully bound thereby.

         DATED effective the 12th day of December, 1995.

                                    /s/ Sandra H. Belfer
                                    -----------------------------
                                    Sandra H. Belfer

                                    /s/ Ursla Djahandideh
                                    -----------------------------
                                    Ursla Djahandideh
                                       15
<PAGE>
                           HOUSTON ENTERPRISES, L.L.C.
                        ASSIGNMENT OF MEMBERSHIP INTEREST
                            AND AGREEMENT OF ASSIGNEE


EFFECTIVE DATE:     December 12, 1995

ASSIGNOR:           MARVIN D. BRODY
                    5632 North Camelback Canyon Drive
                    Phoenix, AZ 85018
                    Tax Identification No. ###-##-####

ASSIGNEE:           HARVEY A. BELFER
                    3633 North 68th Place
                    Scottsdale, AZ 85251
                    Tax Identification No. ###-##-####

PURPOSE:

         Assignor is the owner of 17.5 Investment Units and 17.5 Voting Units in
Houston   Enterprises,   L.L.C.,  an  Arizona  limited  liability  company  (the
"Company").  The Company was formed  pursuant to Articles of Organization of the
Company,  dated  January  13,  1994,  and  filed  with the  Arizona  Corporation
Commission on January 14, 1994, File No.  L-710159-3 and an Operating  Agreement
of the Company,  dated February 14, 1995 (the "Operating  Agreement").  Assignor
desires:  (i) to assign 4.375 of his Investment  Units (the  "Assigned  Units"),
together  with all of the rights under the Operating  Agreement  with respect to
such Assigned Units and (ii) to have Assignee  substituted as a member under the
Operating  Agreement  in the place and stead of  Assignor  with  respect to such
Assigned Units, and Assignee is willing in  consideration  thereof to assume all
of Assignor's  obligations  under the Operating  Agreement  with respect to such
Assigned Units.

AGREEMENTS:

         1. Assignment and Substitution. For valuable consideration, the receipt
and sufficiency of which is hereby acknowledged,  Assignor hereby assigns all of
his right,  title and interest in and to the Assigned Units and the rights under
the Operating Agreement with respect to such-Assigned Units, including,  without
limitation,  the  right  to any  distributions  of  cash  or  property  and  any
allocation  of  profit  or loss  provided  for in the  Operating  Agreement,  to
Assignee,  subject to the terms and  conditions of this  Agreement and the terms
and conditions of the Operating  Agreement.  Upon satisfaction of the conditions
antecedent to assignment and substitution set forth below in Section 2, Assignee
shall be substituted for Assignor as a member under the


                                   EXHIBIT A-1
<PAGE>
Operating  Agreement  with respect to such Assigned  Units,  and Assignor  shall
relinquish  to  Assignee  all of his  rights as a member  with  respect  to such
Assigned Units.

         2.   Conditions   Precedent  to  Assignment   and   Substitution.   The
substitution  of  Assignee  as member  under the  operating  Agreement  shall be
subject to the following conditions:

                  (a) The filing of this Agreement with the Company; and

                  (b) The written consent of all of the members of the Company.

         3.  Disclaimer.  Neither the Company nor any of its members  shall bear
any  responsibility  of any  kind or  nature  with  respect  to the tax or other
effects of this transaction to Assignor and Assignee.

         4. Covenants, Representations and Warranties of Assignee.

                  4.1  Adoption  of  Agreement.   Assignee  hereby  acknowledges
receipt of a copy of the Operating Agreement and all amendments thereto (if any)
and,  as to the  Assigned  Units,  hereby  agrees to assume all  obligations  of
Assignor  pursuant to, and to be bound by and to act in accordance  with, all of
the terms and conditions of the Operating Agreement.

                  4.2 Warranties and Representations. Assignee hereby represents
and warrants:

                           (a) His  acquisition of the Assigned Units is made as
a principal  for his sole account for  investment  purposes  only and not with a
view toward the  distribution  or resale of all or any portion  thereof and that
under no  circumstances  will he sell,  transfer or assign all or any portion of
the Assigned  Units except in  compliance  with the  provisions of the operating
Agreement.

                           (b) He is aware of the  restrictions  on  transfer of
the  Assigned  Units  and  that the  Assigned  Units  will at no time be  freely
transferable  or be assignable  otherwise  than to a person or entity  accepting
similar restrictions on transferability.

                           (c) He has no  reason  to  anticipate  any  change in
personal circumstances, financial or otherwise, which would
                                        2
<PAGE>
cause  him to  sell  or  distribute  or  necessitate  or  require  any  sale  or
distribution of the Assigned Units.

                           (d) He is  familiar  with  the  nature  of and  risks
attending investments in closely held businesses and securities.

                           (e) He is fully aware of the  restrictions  on resale
of the Assigned  Units under the Operating  Agreement and the  Securities Act of
1933, as amended (the "Act") and Rules  promulgated  thereunder,  and applicable
state securities  laws; in particular,  he is aware that the Assigned Units will
not be  registered  under  the Act at any  time,  will not at any time be freely
transferable  and  that any  sale  thereof  may  have  significant  adverse  tax
consequences.

                           (f) He will not, in any event, sell or distribute the
Assigned Units,  or any portion  thereof,  unless  accordance with the terms and
conditions of the operating Agreement.

                           (g) He is fully  aware that the  Assigned  Units were
issued by the Company in reliance upon the exemption provided by Section 4(2) of
the Act (and more particularly Regulation D thereunder),  on the grounds that no
public  offering  was  involved,   and  upon  representations,   warranties  and
agreements as set forth above.

         5. Power of Attorney.

                  5.1 Grant of Power.  Assignee hereby  irrevocably  constitutes
and  appoints  the  Managers  and any  successor  Manager  his true  and  lawful
attorney-in-fact,  with power and authority to act in his name,  place and stead
and to make, execute, acknowledge, deliver, file, record and publish:

                           (a)  Any  certificate  of  authority,  including  the
Operating  Agreement,  or amended  Certificate  or  Articles  as required by the
provisions of Section 4.1 of the Operating  Agreement or by the Arizona  Limited
Liability Company Act;

                           (b) All documents which may be required to effectuate
the  admission  of an  additional  or  substituted  member or the  continuation,
dissolution  or  termination of the Company,  provided-that  such  continuation,
dissolution  or  termination  is in  accordance  with the terms of the Operating
Agreement; and

                           (c)  Any   technical   revisions  to  the   operating
Agreement in order to conform  such  document to the Arizona  Limited  Liability
Company Act as now in effect or as hereafter amended.
                                        3
<PAGE>
                  5.2 Nature and Power. The Assignee expressly acknowledges that
the  foregoing  special  power of  attorney  is  coupled  with an  interest,  is
irrevocable and shall survive the death or legal  incapacity of the Assignee and
the delivery of any  assignment by any Assignee of his  interest.  This power of
attorney  may be  exercised  by the Managers for the Assignee by signature or by
listing all members  executing any instrument  with the signature of the Manager
acting as attorney-in-fact  for all of them. Nothing contained in this paragraph
or anywhere in the Operating  Agreement  shall be construed as  authorizing  the
Managers  to vote on behalf of the  Assignee  for the  purpose  of  amending  or
modifying this Agreement.  As a condition of becoming a substituted  member, any
transferee or assignee must agree to appoint,  and upon  accepting such transfer
or assignment  shall thereby be deemed to have  appointed the Managers as his or
her attorney-in-fact  with identical powers to those set forth in the applicable
provisions of the Operating Agreement.

                  5.3 Binding  Effect of Attorney's  Acts. The Assignee shall be
bound by all representations of the Managers as his  attorney-in-fact and hereby
waives any and all defenses which may be available to him to consent,  negate or
disaffirm  the actions of the Managers or their  successors  under this power of
attorney,  and hereby ratifies and confirms all acts which the Managers or their
successors hereunder, may take as attorney-in-fact  hereunder in all respects as
though performed by the Assignee.

                  5.4 Proof of Power of Attorney.  The pages of this  Assignment
upon  which  this  Section 5 is set forth and the pages  hereof  upon  which the
Assignee's  signature  appears may be separated from the rest of this Assignment
and may be recorded as evidence of the power and  authority  of the Managers and
each of them to exercise the power of attorney set forth herein.

         6. General.

                  6.1  Waiver.   The  waiver  or  release  by  either  party  of
performance by the other party under any of the terms of this  Assignment  shall
not  operate as a waiver or release of  performance  under  other  terms of this
Assignment.

                  6.2 Additional Agreements. The parties shall each execute such
agreements  and other  instruments  as may be necessary to carry into effect the
purposes of this Assignment.

                  6.3  Entire  Agreement.   This  Assignment  and  that  certain
Purchase  Agreement of even date herewith between  Assignor,  Assignee,  Todd P.
Belfer,  Hooman  Nikzad  and  Fradjollah  Djahandideh,  together  constitute  an
integration of all agreements of the parties
                                        4
<PAGE>
hereto  relevant  to the  subject  matter  of  this  Assignment  and  all  prior
discussions and negotiations  are merged herein.  This Assignment may be amended
only by written  amendment  executed by the parties whose rights are affected by
such amendment.

                  6.4 Construction.  The parties shall be bound by the terms and
conditions  hereof which terms and  conditions  shall be construed in accordance
with Arizona law.

                  6.5  Benefit.  This  Assignment  shall  bind and  inure to the
heirs, legal representatives, successors and assigns of the parties hereto.

                  6.6  Gender.  In this  Assignment,  whenever  the  context  so
requires,  the masculine  gender  includes the feminine  and/or neuter,  and the
singular number includes the plural.

         IN WITNESS WHEREOF, the parties have executed Agreement to be effective
the day and year first above written.

                                         ASSIGNOR:


                                         /s/ Marvin D. Brody
                                         ---------------------------
                                         Marvin D. Brody



                                         ASSIGNEE:


                                         /s/ Harvey A. Belfer
                                         ---------------------------
                                         Harvey A. Belfer


ACCEPTANCE OF ASSIGNMENT:

/s/ Todd P. Belfer
- ----------------------------------
Todd P. Belfer, Member and Manager

/s/ Hooman Nikzad
- ----------------------------------
Hooman Nikzad, Member and Manager

/s/ Fradjollah Djahandideh
- ----------------------------------
Fradjollah Djahandideh, Member
                                        5
<PAGE>
                                CONSENT OF SPOUSE
                                   (Assignor)


         The  undersigned,  NANCY P. BRODY,  spouse of the  Assignor,  MARVIN D.
BRODY, hereby consents to the  above-described  assignment of the Assigned Units
described  therein  and  further  confirms  that any and all  right,  title  and
interest of the undersigned in and to said Assigned Units shall also be conveyed
to Assignee as a part of Assignor's assignment.

         DATED effective the 12th day of December,


                                                    /s/ Nancy P. Brody
                                                    ----------------------------
                                                    Nancy P. Brody

                                CONSENT OF SPOUSE
                                   (Assignee)


         The undersigned,  SANDRA H. BELFER,  spouse of the Assignee,  HARVEY A.
BELFER, hereby consents to the above-described  assignment of the Assigned Units
to her husband  and further  agrees to abide by and be bound by all of the terms
and conditions which are applicable to her husband, the Assignor.

         DATED effective the 12th day of December, 1995.


                                                     /s/ Sandra H. Belfer
                                                     ---------------------------
                                                     Sandra H. Belfer
                                        6
<PAGE>
                           HOUSTON ENTERPRISES, L.L.C.
                        ASSIGNMENT OF MEMBERSHIP INTEREST
                            AND AGREEMENT OF ASSIGNEE


EFFECTIVE DATE:      December 12, 1995

ASSIGNOR:            MARVIN D. BRODY
                     5632 North Camelback Canyon Drive
                     Phoenix, AZ 85018,
                     Tax Identification No. ###-##-####

ASSIGNEE:            TODD P. BELFER
                     4552 North 52nd Place
                     Phoenix, AZ 85018
                     Tax Identification No. ###-##-####

PURPOSE:

         Assignor is the owner of 17.5 Investment Units and 17.5 Voting Units in
Houston   Enterprises,   L.L.C.,  an  Arizona  limited  liability  company  (the
"Company") . The Company was enforced  pursuant to Articles of  Organization  of
the  Company,  dated  January 13, 1994,  and filed with the Arizona  Corporation
Commission on January 14, 1994, File No.  L-710159-3 and an Operating  Agreement
of the Company,  dated February 14, 1995 (the "Operating  Agreement").  Assignor
desires:  (i) to assign 4.375 of his  Investment  Units (the  Assigned  Units"),
together  with all of the rights under the Operating  Agreement  with respect to
such Assigned Units and (ii) to have Assignee  substituted as a member under the
Operating  Agreement  in the place and stead of  Assignor  with  respect to such
Assigned Units, and Assignee is willing in  consideration  thereof to assume all
of Assignor's  obligations  under the Operating  Agreement  with respect to such
Assigned Units.

AGREEMENTS:

         1. Assignment and Substitution. For valuable consideration, the receipt
and sufficiency of which is hereby  acknowledged  Assignor hereby assigns all of
his right,  title and interest in and to the Assigned Units and the rights under
the Operating Agreement with respect to such Assigned Units, including,  without
limitation,  the  right  to any  distributions  of  cash  or  property  and  any
allocation  of  profit  or loss  provided  for in the  Operating  Agreement,  to
Assignee,  subject to the terms and  conditions of this  Agreement and the terms
and conditions of the Operating  Agreement.  Upon satisfaction of the conditions
precedent to assignment and  substitution set forth below in Section 2, Assignee
shall be substituted for Assignor as a member under the

                                   EXHIBIT A-2
<PAGE>
Operating  Agreement  with respect to such Assigned  Units,  and Assignor  shall
relinquish  to  Assignee  all of his  rights as a member  with  respect  to such
Assigned Units.

         2.   Conditions   Precedent  to  Assignment   and   Substitution.   The
substitution  of  Assignee  as member  under the  Operating  Agreement  shall be
subject to the following conditions:

                  (a) The filing of this Agreement with the Company; and

                  (b) The written consent of all of the members of the Company.

         3.  Disclaimer.  Neither the Company nor any of its members  shall bear
any  responsibility  of any  kind or  nature  with  respect  to the tax or other
effects of this transaction to Assignor and Assignee.

         4. Covenants, Representations and Warranties of Assignee.

                  4.1  Adoption  of  Agreement.   Assignee  hereby  acknowledges
receipt of a copy of the Operating Agreement and all amendments thereto (if any)
and,  as to the  Assigned  Units,  hereby  agrees to assume all  obligations  of
Assignor  pursuant to, and to be bound by and to act in accordance  with, all of
the terms and conditions of the Operating Agreement.

                  4.2 Warranties and Representations. Assignee hereby represents
and warrants:

                           (a) His  acquisition of the Assigned Units is made as
a principal  for his sole account for  investment  purposes  only and not with a
view toward the  distribution  or resale of all or any portion  thereof and that
under no  circumstances  will he sell,  transfer or assign all or any portion of
the Assigned  Units except in  compliance  with the  provisions of the Operating
Agreement.

                           (b) He is aware of the  restrictions  on  transfer of
the  Assigned  Units  and  that the  Assigned  Units  will at no time be  freely
transferable  or be assignable  otherwise  than to a person or entity  accepting
similar restrictions on transferability.

                           (c) He has no  reason  to  anticipate  any  change in
personal circumstances, financial or otherwise, which would
                                        2
<PAGE>
cause him to sell or  distribute  or  necessitate  or require any sale or of the
Assigned Units.

                           (d) He is  familiar  with  the  nature  of and  risks
attending investments in closely-held businesses and securities.

                           (e) He is fully aware of the  restrictions  on resale
of the Assigned  Units under the Operating  Agreement and the  Securities Act of
1933, as amended (the "Act") and Rules  promulgated  thereunder,  and applicable
state securities  laws; in particular,  he is aware that the Assigned Units will
not be  registered  under  the Act at any  time,  will not at any time be freely
transferable  and  that any  sale  thereof  may  have  significant  adverse  tax
consequences.

                           (f) He will not, in any event, sell or distribute the
Assigned Units, or any portion thereof,  unless in accordance with the terms and
conditions of the Operating Agreement.

                           (g) He is fully  aware that the  Assigned  Units were
issued by the Company in reliance upon the exemption provided by Section 4(2) of
the Act (and more particularly Regulation D thereunder),  on the grounds that no
public  offering  was  involved,   and  upon  representations,   warranties  and
agreements as set forth above.

         5. Power of Attorney.

                  5.1 Grant of Power.  Assignee hereby  irrevocably  constitutes
and  appoints  the  Managers  and any  successor  Manager  his true  and  lawful
attorney-in-fact,  with power and authority to act in his name,  place and stead
and to make, execute, acknowledge, deliver, file, record and publish:

                           (a)  Any  certificate  of  authority,  including  the
Operating  Agreement,  or amended  Certificate  or  Articles  as required by the
provisions of Section 4.1 of the Operating  Agreement or by the Arizona  Limited
Liability Company Act;

                           (b) All documents which may be required to effectuate
the  admission  of an  additional  or  substituted  member or the  continuation,
dissolution  or  termination  of the Company,  provided that such  continuation,
dissolution  or  termination  is in  accordance  with the terms of the Operating
Agreement; and
                                        3
<PAGE>
                           (c)  Any   technical   revisions  to  the   Operating
Agreement in order to conform  such  document to the Arizona  Limited  Liability
Company Act as now in effect or as hereafter amended.

                  5.2 Nature and Power. The Assignee expressly acknowledges that
the  foregoing  special  power of  attorney  is  coupled  with an  interest,  is
irrevocable and shall survive the death or legal  incapacity of the Assignee and
the delivery of any  assignment by any Assignee of his  interest.  This power of
attorney  may be  exercised  by the Managers for the Assignee by signature or by
listing all members  executing any instrument  with the signature of the Manager
acting as attorney-in-fact  for all of them. Nothing contained in this paragraph
or anywhere in the Operating  Agreement  shall be construed as  authorizing  the
Managers  to vote on behalf of the  Assignee  for the  purpose  of  amending  or
modifying this Agreement.  As a condition of becoming a substituted  member, any
transferee or assignee must agree to appoint,  and upon  accepting such transfer
or assignment shall thereby be deemed to have appointed,  the Managers as his or
her attorney-in-fact  with identical powers to those set forth in the applicable
provisions of the Operating Agreement.

                  5.3 Binding  Effect of Attorney's  Acts. The Assignee shall be
bound by all representations of the Managers as his  attorney-in-fact and hereby
waives any and all defenses which may be available to him to consent,  negate or
disaffirm  the actions of the Managers or their  successors  under this power of
attorney,  and hereby ratifies and confirms all acts which the Managers or their
successors hereunder, may take as attorney-in-fact  hereunder in all respects as
though performed by the Assignee.

                  5.4 Proof of Power of Attorney.  The pages of this  Assignment
upon  which  this  Section 5 is set forth and the pages  hereof  upon  which the
Assignee Is signature  appears may be separated from the rest of this Assignment
and may be recorded as evidence of the power and  authority  of the Managers and
each of them to exercise the power of attorney set forth herein.

         6. General.

                  6.1  Waiver.   The  waiver  or  release  by  either  party  of
performance by the other party under any of the terms of this  Assignment  shall
not  operate as a waiver or release of  performance  under  other  terms of this
Assignment.

                  6.2 Additional Agreements. The parties shall each execute such
agreements  and other  instruments  as may be necessary to carry into effect the
purposes of this Assignment.
                                        4
<PAGE>
                  6.3  Entire  Agreement.   This  Assignment  and  that  certain
Purchase Agreement of even date herewith between Assignor,  Assignee,  Harvey A.
Belfer,  Hooman  Nikzad  and  Fradjollah  Djahandideh,  together  constitute  an
integration  of all  agreements  of the parties  hereto  relevant to the subject
matter of this Assignment and all prior  discussions and negotiations are merged
herein. This Assignment may be amended only by written amendment executed by the
parties whose rights are affected by such amendment.

                  6.4 Construction.  The parties shall be bound by the terms and
conditions  hereof which terms and  conditions  shall be construed in accordance
with Arizona law.

                  6.5  Benefit.  This  Assignment  shall  bind and  inure to the
heirs, legal representatives, successors and assigns of the parties hereto.

                  6.6  Gender.  In this  Assignment,  whenever  the  context  so
requires,  the masculine  gender  includes the feminine  and/or neuter,  and the
singular number includes the plural.

         IN WITNESS  WHEREOF,  the parties have  executed  this  Agreement to be
effective the day and year first above written.

                                    ASSIGNOR:

                                    /s/ Marvin D. Brody
                                    -----------------------------
                                    Marvin D. Brody


                                    ASSIGNEE:

                                    /s/ Todd P. Belfer
                                    -----------------------------
                                    Todd P. Belfer

ACCEPTANCE OF ASSIGNMENT:

/s/ Hooman Nikzad
- ---------------------------------
Hooman Nikzad, Member and Manager

/s/ Harvey A. Belfer
- ---------------------------------
Harvey A. Belfer, Member

/s/ Fradjollah Djahandideh
- ---------------------------------
Fradjollah Djahandideh, Member
                                        5
<PAGE>
                                CONSENT OF SPOUSE
                                   (Assignor)


         The  undersigned,  NANCY P. BRODY,  spouse of the  Assignor,  MARVIN D.
BRODY, hereby consents to the  above-described  assignment of the Assigned Units
described  therein  and  further  confirms  that any and all  rights,  title and
interest of the undersigned in and to said Assigned Units shall also be conveyed
to Assignee as a part of Assignor's assignment.

         DATED effective the 12th day of December, 1995.


                                                       /s/ Nancy P. Brody
                                                       -------------------------
                                                       Nancy P. Brody
                                        6
<PAGE>
                           HOUSTON ENTERPRISES, L.L.C.
                        ASSIGNMENT OF MEMBERSHIP INTEREST
                            AND AGREEMENT OF ASSIGNEE


EFFECTIVE DATE:      December 12, 1995

ASSIGNOR:            MARVIN D. BRODY
                     5632 North Camelback Canyon Drive
                     Phoenix, AZ 85018
                     Tax Identification No. ###-##-####

ASSIGNEE:            HOOMAN NIKZAD
                     3658 East Chipman Road
                     Phoenix, AZ 85040
                     Tax Identification No. ###-##-####

PURPOSE:

         Assignor is the owner of 17.5 Investment Units and 17.5 Voting Units in
Houston   Enterprises,   L.L.C.,  an  Arizona  limited  liability  company  (the
"Company").  The Company was formed  pursuant to Articles of Organization of the
Company,  dated  January  13,  1994,  and  filed  with the  Arizona  Corporation
Commission on January 14, 1994, File No.  L-710159-3 and an Operating  Agreement
of the Company,  dated February 14, 1995 (the "Operating  Agreement").  Assignor
desires:  (i) to assign 4.375 of his Investment  Units (the  "Assigned  Units"),
together  with all of the rights under the Operating  Agreement  with respect to
such Assigned Units and (ii) to have Assignee  substituted as a member under the
Operating  Agreement  in the place and stead of  Assignor  with  respect to such
Assigned Units, and Assignee is willing in  consideration  thereof to assume all
of Assignor's  obligations  under the Operating  Agreement  with respect to such
Assigned Units.

AGREEMENTS:

         1. Assignment and Substitution. For valuable consideration, the receipt
and sufficiency of which is hereby acknowledged,  Assignor hereby assigns all of
his right,  title and interest in and to the Assigned Units and the rights under
the Operating Agreement with respect to such Assigned Units, including,  without
limitation,  the  right  to any  distributions  of  cash  or  property  and  any
allocation  of  profit  or loss  provided  for in the  Operating  Agreement,  to
Assignee,  subject to the terms and  conditions of this  Agreement and the terms
and conditions of the Operating  Agreement.  Upon satisfaction of the conditions
precedent to assignment and  substitution set forth below in Section 2, Assignee
shall be substituted for Assignor as a member under the

                                   EXHIBIT A-3
<PAGE>
         Operating  Agreement with respect to such Assigned Units,  and Assignor
shall  relinquish to Assignee all of his rights as a member with respect to such
Assigned Units.

         2.   Conditions   Precedent  to  Assignment   and   Substitution.   The
substitution  of  Assignee  as member  under the  Operating  Agreement  shall be
subject to the following conditions:

                  (a) The filing of this Agreement with the Company; and

                  (b) The written consent of all of the members of the Company.

         3.  Disclaimer.  Neither the Company nor any of its members  shall bear
any  responsibility  of any  kind or  nature  with  respect  to the tax or other
effects of this transaction to Assignor and Assignee.

         4. Covenants, Representations and Warranties of Assignee.

                  4.1  Adoption  of  Agreement.   Assignee  hereby  acknowledges
receipt of a copy of the Operating Agreement and all amendments thereto (if any)
and,  as to the  Assigned  Units,  hereby  agrees to assume all  obligations  of
Assignor  pursuant to, and to be bound by and to act in accordance  with, all of
the terms and conditions of the Operating Agreement.

                  4.2 Warranties and Representations. Assignee hereby represents
and warrants:

                           (a) His  acquisition of the Assigned Units is made as
a principal  for his sole account for  investment  purposes  only and not with a
view toward the  distribution  or resale of all or any portion  thereof and that
under no  circumstances  will he sell,  transfer or assign all or any portion of
the Assigned  Units except in  compliance  with the  provisions of the Operating
Agreement.

                           (b) He is aware of the  restrictions  on  transfer of
the  Assigned  Units  and  that the  Assigned  Units  will at no time be  freely
transferable  or be assignable  otherwise  than to a person or entity  accepting
similar restrictions on transferability.

                           (c) He has no  reason  to  anticipate  any  change in
personal circumstances, financial or otherwise, which would
                                        2
<PAGE>
cause  him to  sell  or  distribute  or  necessitate  or  require  any  sale  or
distribution of the Assigned Units.

                           (d) He is  familiar  with  the  nature  of and  risks
attending investments in closely-held businesses and securities.

                           (e) He is fully aware of the  restrictions  on resale
of the Assigned  Units under the Operating  Agreement and the  Securities Act of
1933, as amended (the "Act") and Rules  promulgated  thereunder,  and applicable
state securities  laws; in particular,  he is aware that the Assigned Units will
not be  registered  under  the Act at any  time,  will not at any time be freely
transferable  and  that any  sale  thereof  may  have  significant  adverse  tax
consequences.

                           (f) He will not, in any event, sell or distribute the
Assigned Units, or any portion thereof,  unless in accordance with the terms and
conditions of the Operating Agreement.

                           (g) He is fully  aware that the  Assigned  Units were
Issued by the Company in reliance upon the exemption provided by Section 4(2) of
the Act (and more  particularly  Regulation D thereunder) on the grounds that no
public  offering  was  involved,   and  upon  representations,   warranties  and
agreements as set forth above.

         5. Power of Attorney.

                  5.1 Grant of Power.  Assignee hereby  irrevocably  constitutes
and  appoints  the  Managers  and any  successor  Manager  his true  and  lawful
attorney-in-fact,  with power and authority to act in his name,  place and stead
and to make, execute, acknowledge, deliver, file, record and publish:

                           (a)  Any  certificate  of  authority,  including  the
Operating  Agreement,  or amended  Certificate  or  Articles  as required by the
provisions of Section 4.1 of the Operating  Agreement or by the Arizona  Limited
Liability Company Act;

                           (b) All documents which may be required to effectuate
the  admission  of an  additional  or  substituted  member or the  continuation,
dissolution  or  termination  of the Company,  provided that such  continuation,
dissolution  or  termination  is in  accordance  with the terms of the Operating
Agreement; and

                           (c)  Any   technical   revisions  to  the   operating
Agreement in order to conform  such  document to the Arizona  Limited  Liability
Company Act as now in effect or as hereafter amended.
                                        3
<PAGE>
                  5.2 Nature and Power. The Assignee expressly acknowledges that
the  foregoing  special  power of  attorney  is  coupled  with an  interest,  is
irrevocable and shall survive the death or legal  incapacity of the Assignee and
the delivery of any  assignment by any Assignee of his  interest.  This power of
attorney  may be  exercised  by the Managers for the Assignee by signature or by
listing all members  executing any instrument  with the signature of the Manager
acting as attorney-in-fact  for all of them. Nothing contained in this Paragraph
or anywhere in the Operating  Agreement  shall be construed as  authorizing  the
Managers  to vote on behalf of the  Assignee  for the  purpose  of  amending  or
modifying this Agreement.  As a condition of becoming a substituted  member, any
transferee or assignee must agree to appoint,  and upon  accepting such transfer
or assignment shall thereby be deemed to have appointed,  the Managers as his or
her attorney-in-fact  with identical powers to those set forth in the applicable
provisions of the Operating Agreement.

                  5.3 Binding  Effect of Attorney's  Acts. The Assignee shall be
bound by all representations of the Managers as his  attorney-in-fact and hereby
waives any and all defenses which may be available to him to consent,  negate or
disaffirm  the actions of the Managers or their  successors  under this power of
attorney,  and hereby ratifies and confirms all acts which the Managers or their
successors hereunder, may take as attorney-in-fact  hereunder in all respects as
though performed by the Assignee.

                  5.4 Proof of Power of Attorney.  The pages of this  Assignment
upon  which  this  Section 5 is set forth and the pages  hereof  upon  which the
Assignee's  signature  appears may be separated from the rest of this Assignment
and may be recorded as evidence of the power and  authority  of the Managers and
each of them to exercise the power of attorney set forth herein.

         6. General.

                  6.1  Waiver.   The  waiver  or  release  by  either  party  of
Performance by the other party under any of the terms of this  Assignment  shall
not  operate as a waiver or release of  performance  under  other  terms of this
Assignment.

                  6.2 Additional Agreements. The parties shall each execute such
agreements  and other  instruments  as may be necessary to carry into effect the
purposes of this Assignment.

                  6.3  Entire  Agreement.   This  Assignment  and  that  certain
Purchase Agreement of even date herewith between Assignor,  Assignee,  Harvey A.
Belfer,  Todd P. Belfer,  and  Fradjollah  Djahandideh,  together  constitute an
integration of all agreements
                                        4
<PAGE>
of the parties hereto  relevant to the subject matter of this Assignment and all
prior  discussions and  negotiations  are merged herein.  This Assignment may be
amended  only by written  amendment  executed  by the parties  whose  rights are
affected by such amendment.

                  6.4 Construction.  The parties shall be bound by the terms and
conditions  hereof which terms and  conditions  shall be construed in accordance
with Arizona law.

                  6.5  Benefit.  This  Assignment  shall  bind and  inure to the
heirs, legal representatives, successors and assigns of the parties hereto.

                  6.6  Gender.  In this  Assignment,  whenever  the  context  so
requires,  the masculine  gender  includes the feminine  and/or neuter,  and the
singular number includes the plural.

         IN WITNESS  WHEREOF,  the parties have  executed  this  Agreement to be
effective the day and year first above written.

                                       ASSIGNOR:

                                       /s/ Marvin D. Brody
                                       ----------------------------
                                       Marvin D. Brody



                                       ASSIGNEE:

                                       /s/ Hooman Nikzad
                                       ----------------------------
                                       Hooman Nikzad

ACCEPTANCE OF ASSIGNMENT

/s/ Todd P. Belfer
- ----------------------------------
Todd P. Belfer, Member and Manager

/s/ Harvey A. Belfer
- ----------------------------------
Harvey A. Belfer, Member

/s/ Fradjollah Djahandideh
- ----------------------------------
Fradjollah Djahandideh, Member
                                        5
<PAGE>
                                CONSENT OF SPOUSE
                                   (Assignor)


         The  undersigned,  NANCY P. BRODY,  spouse of the  Assignor,  MARVIN D.
BRODY, hereby consents to the  above-described  assignment of the Assigned Units
described  therein  and  further  confirms  that any and all  right,  title  and
interest of the undersigned in and to said Assigned Units shall also be conveyed
to Assignee as a part of Assignor's assignment.

         DATED effective the 12th day of December, 1995.


                                                     /s/ Nancy P. Brody
                                                     ---------------------------
                                                     Nancy P. Brody
                                        6
<PAGE>
                           HOUSTON ENTERPRISES, L.L.C.
                        ASSIGNMENT OF MEMBERSHIP INTEREST
                            AND AGREEMENT OF ASSIGNEE


EFFECTIVE DATE:     December 12, 1995

ASSIGNOR:           MARVIN D. BRODY
                    5632 North Camelback Canyon Drive
                    Phoenix, AZ 85018
                    Tax Identification No. ###-##-####

ASSIGNEE:           FRADJOLLAH DJAHANDIDEH
                    3658 East Chipman Road
                    Phoenix, AZ 85040
                    Tax identification No. ###-##-####

PURPOSE:

         Assignor is the owner of 17.5 Investment Units and 17.5 Voting Units in
Houston   Enterprises,   L.L.C.,  an  Arizona  limited  liability  company  (the
"Company").  The Company was formed  pursuant to Articles of Organization of the
Company,  dated  January  13,  1994,  and  filed  with the  Arizona  Corporation
Commission on January 14, 1994, File No.  L-710159-3 and an Operating  Agreement
of the Company,  dated February 14, 1995 (the  "Operating  Agreement")  Assignor
desires:  (i) to assign 4.375 of his Investment  Units (the  "Assigned  Units"),
together  with all of the rights under the Operating  Agreement  with respect to
such Assigned Units and (ii) to have Assignee  substituted as a member under the
Operating  Agreement  in the place and stead of  Assignor  with  respect to such
Assigned Units, and Assignee is willing in  consideration  thereof to assume all
of Assignor's  obligations  under the Operating  Agreement  with respect to such
Assigned Units.

AGREEMENTS:

         1. Assignment and Substitution. For valuable consideration, the receipt
and sufficiency of which is hereby acknowledged,  Assignor hereby assigns all of
his right,  title and interest in and to the Assigned Units and the rights under
the Operating Agreement with respect to such Assigned Units, including,  without
limitation,  the  right  to any  distributions  of  cash  or  property  and  any
allocation  of  profit  or loss  provided  for in the  Operating  Agreement,  to
Assignee,  subject to the terms and  conditions of this  Agreement and the terms
and conditions of the Operating  Agreement.  Upon satisfaction of the conditions
precedent to assignment and  substitution set forth below in Section 2, Assignee
shall be substituted for Assignor as a member under the

                                   EXHIBIT A-4
<PAGE>
Operating  Agreement  with respect to such Assigned  Units,  and Assignor  shall
relinquish  to  Assignee  all of his  rights as a member  with  respect  to such
Assigned Units.

         2.   Conditions   Precedent  to  Assignment   and   Substitution.   The
substitution  of  Assignee  as member  under the  Operating  Agreement  shall be
subject to the following conditions:

                  (a) The filing of this Agreement with the Company; and

                  (b) The written consent of all of the members of the Company.

         3.  Disclaimer.  Neither the Company nor any of its members  shall bear
any  responsibility  of any  kind or  nature  with  respect  to the tax or other
effects of this transaction to Assignor and Assignee.

         4. Covenants, Representations and Warranties of Assignee.

                  4.1  Adoption  of  Agreement.   Assignee  hereby  acknowledges
receipt of a copy of the Operating Agreement and all amendments thereto (if any)
and,  as to the  Assigned  Units,  hereby  agrees to assume all  obligations  of
Assignor  pursuant to, and to be bound by and to act in accordance  with, all of
the terms and conditions of the Operating Agreement.

                  4.2 Warranties and Representations. Assignee hereby represents
and warrants:

                           (a) His  acquisition of the Assigned Units is made as
a principal  for his sole account for  investment  purposes  only and not with a
view toward the  distribution  or resale of all or any portion  thereof and that
under no  circumstances  will he sell,  transfer or assign all or any portion of
the Assigned  Units except in  compliance  with the  provisions of the operating
Agreement.

                           (b) He is aware of the  restrictions  on  transfer of
the  Assigned  Units  and  that the  Assigned  Units  will at no time be  freely
transferable  or be assignable  otherwise  than to a person or entity  accepting
similar restrictions on transferability.

                           (c) He has no  reason  to  anticipate  any  change in
personal circumstances, financial or otherwise, which would
                                        2
<PAGE>
cause  him to  sell  or  distribute  or  necessitate  or  require  any  sale  or
distribution of the Assigned Units.

                           (d) He is  familiar  with  the  nature  of and  risks
attending investments in closely-held businesses and securities.

                           (e) He is fully aware of the  restrictions  on resale
of the Assigned  Units under the Operating  Agreement and the  Securities Act of
1933, as amended (the "Act") and Rules  promulgated  thereunder,  and applicable
state securities  laws; in particular,  he is aware that the Assigned Units will
not be  registered  under  the Act at any  time,  will not at any time be freely
transferable  and  that any  sale  thereof  may  have  significant  adverse  tax
consequences.

                           (f) He will not, in any event, sell or distribute the
Assigned Units, or any portion thereof,  unless in accordance with the terms and
conditions of the Operating Agreement.

                           (g) He is fully  aware that the  Assigned  Units were
issued by the Company in reliance upon the exemption provided by Section 4(2) of
the Act (and more particularly Regulation D thereunder),  on the grounds that no
public  offering  was  involved,   and  upon  representations,   warranties  and
agreements as set forth above.

         5. Power of Attorney.

                  5.1 Grant of Power.  Assignee hereby  irrevocably  constitutes
and  appoints  the  Managers  and any  successor  Manager  his true  and  lawful
attorney-in-fact,  with power and authority to act in his name,  place and stead
and to make, execute, acknowledge, deliver, file, record and publish:

                           (a)  Any  certificate  of  authority,  including  the
Operating  Agreement,  or amended  Certificate  or  Articles  as required by the
provisions of Section 4.1 of the Operating  Agreement or by the Arizona  Limited
Liability Company Act;

                           (b) All documents which may be required to effectuate
the  admission  of an  additional  or  substituted  member or the  continuation,
dissolution  or  termination  of the Company,  provided that such  continuation,
dissolution  or  termination  is in  accordance  with the terms of the Operating
Agreement; and
                                        3
<PAGE>
                           (c)  Any   technical   revisions  to  the   Operating
Agreement in order to confirm  such  document to the Arizona  Limited  Liability
Company Act as now in effect or as hereafter amended.

                  5.2 Nature and Power. The Assignee expressly acknowledges that
the  foregoing  special  power of  attorney  is  coupled  with an  interest,  is
irrevocable and shall survive the death or legal  incapacity of the Assignee and
the delivery of any  assignment by any Assignee of his  interest.  This power of
attorney  may be  exercised  by the Managers for the Assignee by signature or by
listing all members  executing any instrument  with the signature of the Manager
acting as attorney-in-fact  for all of them. Nothing contained in this paragraph
or anywhere in the Operating  Agreement  shall be construed as  authorizing  the
Managers  to vote on behalf of the  Assignee  for the  purpose  of  amending  or
modifying this Agreement.  As a condition of becoming a substituted  member, any
transferee or assignee must agree to appoint,  and upon  accepting such transfer
or assignment shall thereby be deemed to have appointed,  the Managers as his or
her attorney-in-fact  with identical powers to those set forth in the applicable
provisions of the Operating Agreement.

                  5.3 Binding  Effect of Attorney's  Acts. The Assignee shall be
bound by all representations of the Managers as his  attorney-in-fact and hereby
waives any and all defenses which may be available to him to consent,  negate or
disaffirm  the actions of the Managers or their  successors  under this power of
attorney,  and hereby ratifies and confirms all acts which the Managers or their
successors hereunder, may take as attorney-in-fact  hereunder in all respects as
though performed by the Assignee.

                  5.4 Proof of Power of Attorney.  The pages of this  Assignment
upon  which  this  Section 5 is set forth and the pages  hereof  upon  which the
Assignee's  signature  appears may be separated from the rest of this Assignment
and may be recorded as evidence of the power and  authority  of the Managers and
each of them to exercise the power of attorney set forth herein.

         6. General.

                  6.1  Waiver.   The  waiver  or  release  by  either  party  of
performance by the other party under any of the terms of this  Assignment  shall
not  operate as a waiver or release of  performance  under  other  terms of this
Assignment.

                  6.2 Additional Agreements. The Parties shall each execute such
agreements  and other  instruments  as may be necessary to carry into effect the
purposes of this Assignment.
                                        4
<PAGE>
                  6.3  Entire  Agreement.   This  Assignment  and  that  certain
Purchase  Agreement of even date herewith between  Assignor,  Assignee,  Todd P.
Belfer,  Hooman Nikzad and Harvey A. Belfer,  together constitute an integration
of all agreements of the parties  hereto  relevant to the subject matter of this
Assignment and all prior  discussions and  negotiations  are merge herein.  This
Assignment  may be amended  only by written  amendment  executed  by the parties
whose rights are affected by such amendment.

                  6.4 Construction.  The parties shall be bound by the terms and
conditions  hereof which terms and  conditions  shall be construed in accordance
with Arizona law.

                  6.5  Benefit.  This  Assignment  shall  bind and  inure to the
heirs, legal representatives, successors and assigns of the parties hereto.

                  6.6  Gender.  In this  Assignment,  whenever  the  context  so
requires,  the masculine  gender  includes the feminine  and/or neuter,  and the
singular number includes the plural.

         IN WITNESS  WHEREOF,  the parties have  executed  this  Agreement to be
effective the day and year first above written.

                                    ASSIGNOR:


                                    /s/ Marvin D. Brody
                                    -----------------------------
                                    Marvin D. Brody


                                    ASSIGNEE:


                                    /s/ Fradjollah Djadhandideh
                                    -----------------------------
                                    Fradjollah Djadhandideh

ACCEPTANCE OF ASSIGNMENT:

/s/ Hooman Nikzad
- ---------------------------------
Hooman Nikzad, Member and Manager

/s/ Todd P. Belfer
- ---------------------------------
Todd P. Belfer, Member and Manager

/s/ Harvey A. Belfer
- ---------------------------------
Harvey A. Belfer, Member
                                        5
<PAGE>
                                CONSENT OF SPOUSE
                                   (Assignor)


         The  undersigned,  NANCY P. BRODY,  spouse of the  Assignor,  MARVIN D.
BRODY, hereby consents to the  above-described  assignment of the Assigned Units
described  therein  and  further  confirms  that any and all  right,  title  and
interest of the undersigned in and to said Assigned Units shall also be conveyed
to Assignee as a part of Assignor's assignment.

         DATED effective the 12th day of December, 1995.


                                                   /s/ Nancy P. Brody
                                                   -----------------------------
                                                   Nancy P. Brody



                                CONSENT OF SPOUSE
                                   (Assignee)


         The  undersigned,   URUSALA   DJAHANDIDEH,   spouse  of  the  Assignee,
FRADJOLLAH DJAHANDIDEH, hereby consents to the above-described assignment of the
Assigned Units to her husband and further agrees to abide by and be bound by all
of the terms and conditions which are applicable to her husband, the Assignor.

         DATED effective the 12th day of December, 1995.


                                                   /s/ Urusala Djahandideh
                                                   -----------------------------
                                                    Urusala Djahandideh
                                        6

                                 PROMISSORY NOTE

$300,000

                                                                Phoenix, Arizona
                                                                   March 6, 1996

         FOR VALUE RECEIVED,  the undersigned  HOUSTON  ENTERPRISES, L.L.C., dba
HOUSTON  INTERNATIONAL,  L.L.C., an Arizona limited liability company ("Maker"),
promises  to pay to the  order  of  BELFER  LABS,  L.L.C.,  an  Arizona  limited
liability company, at 4422 North 24th Street,  Phoenix,  Arizona 85016 (together
with all subsequent  holders of this Note,  hereinafter  called "Payee"),  or at
such  other  place as Payee  may from time to time  designate  in  writing,  the
principal  sum of THREE HUNDRED  THOUSAND AND NO/100  DOLLARS  ($300,000),  plus
interest  calculated  on a daily basis  (based on a 365-day  year) from the date
hereof on the principal  balance from time to time  outstanding  as  hereinafter
provided, principal, interest and all other sums payable hereunder to be paid in
lawful money of the United States of America as follows:

         A.       Interest shall accrue at the rate of twelve percent
                  (12%) per annum.

         B.       Interest, principal and all other amounts payable
                  hereunder shall be due and payable on March 6, 1997.

         All payments on this Note shall be applied  first to the payment of any
costs,  fees or other  charges  incurred  in  connection  with the  indebtedness
evidenced  hereby,  next to the  payment  of  accrued  interest  and then to the
reduction of the principal balance.

         This Note is  secured by a Security  Agreement  of even date  herewith,
executed by Maker, or debtor, in favor of Payee, as secured party.

         Time is of the essence of this Note.  Upon the  occurrence of any Event
of Default,  as defined in the Security  Agreement,  at the option of Payee, the
entire unpaid principal  balance,  all accrued and unpaid interest and all other
amounts  payable  hereunder  shall become  immediately  due and payable  without
notice.

         After demand or maturity,  including  maturity upon  acceleration,  the
unpaid principal balance,  all accrued and unpaid interest and all other amounts
payable  hereunder  shall bear interest at the rate of sixteen percent (16%) per
annum. Maker shall pay all costs and expenses,  including reasonable  attorneys'
fees and court costs,  incurred in the  collection or  enforcement of all or any
part of this Note.
                                        1
<PAGE>
         Maker shall have the option to prepay this Note, in full or in part, at
any time without penalty.

         Upon the  occurrence  of an Event of Default as defined in the Security
Agreement,  Payee may  exercise any rights and remedies in such order and manner
as Payee, in its sole discretion,  shall determine. Failure of Payee to exercise
any option  hereunder shall not constitute a waiver of the right to exercise the
same in the event of any subsequent  default or in the event of the  continuance
of any existing default after demand for strict performance hereof.

         Maker,  sureties,  guarantors  and  endorsers  hereof:  (a) agree to be
jointly and severally bound, (b) severally waive demand, diligence,  presentment
for payment,  protest and demand,  and notice of extension,  dishonor,  protest,
demand and  nonpayment of this Note,  (c) consent that Payee may extend the time
of payment or otherwise  modify the terms of payment of any part or the whole of
the debt  evidenced by this Note,  at the request of any other person  primarily
liable  hereon,  and such consent  shall not alter nor diminish the liability of
any  person,  and (d)  agree  that  Payee  may set off at any  time  any sums or
property owed to any of them by Payee.

         This Note shall be binding  upon Maker and its  successors  and assigns
and shall inure to the benefit of Payee and their successors and assigns.

         All notices required or permitted in connection with this Note shall be
given at the place and in the manner provided in the Security  Agreement for the
giving of notices.

         This  Note  shall  be  governed  by  and  construed  according  to  the
substantive  laws of the State of Arizona,  without giving regard to conflict of
law principles.

         Maker agrees to an effective  rate of interest  that is the rate stated
above plus any additional  rate of interest  resulting from any other charges in
the  nature of  interest  paid or to be paid by or on  behalf  of Maker,  or any
benefit  received or to be received by payee,  in connection with this Note. All
agreements  between Maker and Payee,  whether now existing or hereafter  arising
and  whether  written  or oral,  are hereby  limited so that in no  contingency,
whether by reason of  acceleration  of the  maturity of this Note or  otherwise,
shall the  interest  contracted  for,  charged or received  by Payee  exceed the
maximum amount  permissible under applicable  federal or state law. If, from any
circumstance  whatsoever,  interest which would otherwise be payable to Payee is
in excess of the maximum lawful amount,  the interest  payable to Payee shall be
reduced to the maximum amount  permitted  under  applicable law; and if from any
circumstance  Payee  shall ever  receive  anything of value  deemed  interest by
applicable law in excess of the maximum  lawful amount,  an amount equal to that
amount which would have been
                                       2
<PAGE>
excessive interest shall be applied to the reduction of the principal balance of
this Note and not to the payment of interest and if such amount which would have
been  excessive  interest  exceeds the unpaid balance of principal of this Note,
such additional  amount shall be refunded to Maker.  All interest paid or agreed
to be paid to Payee  shall,  to the  extent  permitted  by  applicable  law,  be
amortized,  prorated,  allocated  and spread  throughout  the full period  until
payment  in full of the  principal  of this Note  (including  the  period of any
renewal or extension  thereof) so that the interest thereon for such full period
shall not exceed the maximum amount  permitted by applicable law. This paragraph
shall control all agreements between Maker and Payee.

         IN WITNESS  WHEREOF,  these  presents are executed as of the date first
written above.


HOUSTON ENTERPRISES, L.L.C., dba
HOUSTON INTERNATIONAL, L.L.C., an
Arizona limited liability company

By       /s/ Todd P. Belfer
         ----------------------------
         Todd P. Belfer, Its Manager


By       /s/ Hooman Nikzad 
         ----------------------------
         Hooman Nikzad, It Manager
                                        3


                   PRODUCT PURCHASE AND DISTRIBUTION AGREEMENT
                   -------------------------------------------

         This Product Purchase and Distribution  Agreement is entered into as of
this 2nd day of January,  1995, by and between Belnik Investment Group, Inc., an
Arizona  corporation  doing  business  as Freedom  Wholesalers  ("Freedom")  and
Houston Enterprises, L.L.C., an Arizona limited liability company doing business
as Houston International, L.L.C. ("Houston");

                                    RECITALS:

         WHEREAS, Freedom desires to enter the business of packaging,  marketing
and distributing  natural dietary  supplements and wishes to own the products it
will be handling and/or to have the right to distribute such products;

         WHEREAS, Houston operates its own business of packaging,  marketing and
distributing dietary supplements and, among others, owns three products which it
presently  markets under the names Naturally High TM, the Stuff TM and Naturally
Klean R Herbal Tea and is willing to sell to Freedom all of its right, title and
interest in  Naturally  High TM and the Stuff TM (the  "Products")  and to allow
Freedom  to  distribute,  non-exclusively,  Naturally  Klean R  Herbal  Tea (the
"Distributed Product");

                                   AGREEMENT:

         NOW, THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency  of  which  is  hereby  acknowledged,  and in  consideration  of the
parties' mutual covenants contained herein, the parties agree as follows:

         1. Sale and  Purchase  of the  Products.  Houston  does hereby sell and
convey to Freedom and Freedom does hereby purchase all of Houston's right, title
and interest in the Products for and in consideration of the sum of One Thousand
Dollars ($ 1,000.  00) which sum is  hereinafter  referred  to as the  "Purchase
Price".  The  Purchase  Price  shall be paid with the  issuance  to  Houston  of
Freedom's  unsecured,  five-year,  promissory note in the amount of the Purchase
Price, dated the date of this agreement,  bearing simple interest at the rate of
ten percent (10%) per annum,  and in  substantially  the form attached hereto as
Exhibit A.

         2. Right to Distribute  the  Distributed  Product.  Houston does hereby
grant to Freedom the non-exclusive  right to distribute the Distributed  Product
during  the term of this  Agreement.  Freedom  shall  purchase  the  Distributed
Product  from  Houston at such price and on such other terms and  conditions  as
shall be acceptable to Houston and Freedom, as determined from time to time.

         3 . Additional Documents.  Houston shall execute and deliver to Freedom
all such documents of conveyance and other  instruments as shall be necessary or
required to effect and  evidence  the  foregoing  conveyance  of the Products to
Freedom.

         4. Term.  This  Agreement  shall continue in effect for a term of three
(3) years
<PAGE>
commencing on the date hereof and shall automatically  extend for additional one
(1) year periods unless either party shall give the other party ninety (90) days
written notice of its desire to terminate this Agreement.

         5.  Representations and Warranties.  Houston represents and warrants to
Freedom  that it has good and  transferable  title  to the  Products  and to the
Distributed Product,  free and clear of all liens,  pledges,  charges,  security
interests, encumbrances, claims, licenses, conditions,  restrictions on transfer
or other restrictions or rights of third parties.  Furthermore,  Houston has the
power to transfer the rights under this  Agreement,  and this Agreement has been
approved by valid action of Houston.  Houston indemnifies Freedom, its licensees
and assigns, from and against all losses,  damages and costs which may be caused
Freedom,  its  licensees  or  assigns,  as a result of the breach,  failure,  or
invalidity of any of the foregoing representations and warranties.

         6. Notice. Any notice or other  communication  required or permitted to
be given to the parties  hereto  shall be deemed to have been given if delivered
by hand or forty-eight  (48) hours after being mailed by certified or registered
United States mail, return receipt  requested,  first-class  postage pre-paid or
twelve  (12)  hours  after  the time  dispatched  by  telegram  or by  facsimile
transmission,  in each  case,  addressed  as  follows:  if to  Freedom,  Freedom
Wholesalers,  1719 W. University,  Suite 187, Tempe,  Arizona 85281,  Attention:
Todd P. Belfer,  President;  if to Houston, Hooman Nikzad, Managing Member, 1719
W.  University,  Suite  187,  Tempe,  Arizona  8528 1,  with a copy to Robert K.
Rogers,  Robert K. Rogers &  Associates,  5725 N.  Scottsdale  Road,  Suite 190,
Scottsdale,  Arizona  85250,  or such other  addresses as the parties hereto may
from time to time designate in writing.

         7. Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the parties hereto and upon their respective  successors and
assigns.

         8. Applicable Law. This Agreement shall be governed by and construed in
accordance with Arizona law.

         IN WITNESS WHEREOF,  the parties hereto have duly caused this Agreement
to be duly executed as of the day and year first above written.

                                                 Freedom:

                                                 Belnik Investment Group, Inc.

                                                 /s/Todd P. Belfer
                                                 -----------------
                                                 Todd P. Belfer, President

                                        2
<PAGE>
                                                 Houston:

                                                 Houston Enterprises, L.L.C.

                                                 /s/Hooman Nikzad
                                                 ----------------
                                                 Hooman Nikzad, Managing Member

                                                 /s/Todd P. Belfer
                                                 -----------------
                                                 Todd P. Belfer, Managing Member

                                        3
<PAGE>
                                    EXHIBIT A

                                 PROMISSORY NOTE

$1,000.00                                                        January 2, 1995

         FOR  VALUE  RECEIVED,   Belnik  Investment  Group,   Inc.,  an  Arizona
corporation doing business as Freedom  Wholesalers  ("Maker") promises to pay to
the order of Houston  Enterprises,  L.L.C., an Arizona limited liability company
doing  business  as  Houston  International,  L.L.C.  ("Payee"),  the  aggregate
principal  sum of One  Thousand and no/100  Dollars  ($1,000.00)  together  with
interest  on the unpaid  principal  balance  thereof  from the date hereof at an
annual  interest rate of ten percent (10%).  All principal and interest  accrued
hereunder shall be due and payable in full on January 1, 2000.

         All payments of principal and interest shall be made in lawful money of
the United  States of America to Payee at such address as Payee may from time to
time designate.

         Maker may at any time  prepay all or any  portion  of the amount  owing
hereunder without premium or penalty.  All payments hereunder shall be allocated
first to the payment of accrued  interest and subsequently to a reduction of the
outstanding principal amount hereof.

         This Promissory  Note may be amended,  waived or modified only upon the
prior written consent of Maker and Payee.

         Any notice herein required or permitted to be given shall be in writing
and may be personally  served or sent by  registered or certified  United States
mail,  postage prepaid,  or by commercial courier with verification of delivery,
and shall be effective upon receipt.

         This  Promissory Note has been executed in and shall be governed by the
laws of the State of Arizona.

         If, after  maturity,  this Promissory Note is placed in the hands of an
attorney for collection or if it is collected  through  judicial,  bankruptcy or
receivership proceedings, an additional reasonable amount shall be paid by Maker
for attorneys' fees.

         All  references  to Payee  herein  shall  include  its  successors  and
assigns.  All  references  to Maker  herein  shall  include its  successors  and
assigns,  and all covenants and agreements  contained  herein by or on behalf of
Maker shall be binding on its successors and assigns.

         Maker hereby waives presentment,  demand, notice, protest and all other
demands and notices in connection  with the delivery,  acceptance,  performance,
default  or  enforcement   hereof  and  consent  that  no  indulgence,   and  no
substitution, release or surrender of collateral, and no discharge or release of
any other party  primarily or  secondarily  liable  hereon,  shall  discharge or
otherwise  affect the  liability  of Maker.  No delay or omission on the part of
Payee in exercising any right  hereunder shall operate as a waiver of such right
or of any other right hereunder, and a waiver of any such right on

<PAGE>
any one occasion  shall not be construed as a bar to or waiver of any such right
on any future occasion.

         IN  WITNESS  WHEREOF,  Houston  Enterprises,  L.L.C.  has  caused  this
Promissory  Note to be executed,  delivered and issued  effective as of the date
first set forth above.


                                         HOUSTON ENTERPRISES, L.L.C.


                                         By: /S/Hooman Nikzad
                                             ----------------
                                             Hooman Nikzad, Managing Member


                                         By: /S/Todd P. Belfer
                                             -----------------
                                             Todd P. Belfer, Managing Member
                                        2

                            ASSET PURCHASE AGREEMENT

         This Agreement made 16th day of January, 1996, between OLYMPIAN GLOBAL,
L.C., an Arizona  limited  liability  company,  organized  under the laws of the
State of Arizona,  having its  principal  place of  business at P.O.  Box 12461,
Scottsdale,   Arizona  85267,   here  referred  to  as  "Seller",   and  HOUSTON
INTERNATIONAL,   L.L.C.,  an  Arizona  limited  liability  company,  having  its
principal office at 1719 W. University,  Suite 187, Tempe,  Arizona 85281,  here
referred to as "Buyer".

                                    RECITALS

         A. Seller is engaged in the manufacture and sale of nutritional  health
vitamins and supplements;

         B.  Seller  holds all  rights  to the  federally  registered  trademark
"PRO-LINE"  as  filed  with the  United  States  Patent  and  Trademark  Office,
registration no. 1,857,461, dated October 11, 1994;

         C. Seller desires to sell to Buyer and Buyer desires to purchase all of
Seller's  right,  title and interest in the  PRO-LINE  trademark  and  tradename
("Trademark"), including all good will.

         NOW,  THEREFORE,  in  consideration  of the  premises and of the mutual
covenants hereinafter set forth, the parties hereto agree as follows;

                  1. Sale and Purchase.

                           (a) Assets and  Properties to be Sold and  Purchased.
At the  Closing  (as  hereinafter  defined),  Seller  shall sell and Buyer shall
purchase,  subject to all the terms and  conditions  of this  Agreement,  all of
Seller's  right,  title and  interest in, to or under the  following  assets and
properties of Seller (the "Transferred Assets"):

                                    (i)   Trademark.   Seller,   by  a  separate
instrument in writing, will assign and transfer to Buyer the entire right, title
and  interest  in and to the  trademark  "PRO-LINE"  and  the  good  will of the
business in connection with which such mark is used to Buyer

                                    (ii) Customer  Lists and Data.  Buyer hereby
acknowledges  that  Seller  has  furnished  Buyer  with a list  of all  Seller's
customers for PRO-LINE,  and complete  sales reports and data useful in the sale
of PRO-LINE.
<PAGE>
                                    (iii) Available Inventory.  Seller and Buyer
acknowledge that there exists some available inventory ("Inventory") of PRO-LINE
products that has been  delivered to Buyer for  $20,000.00.  Buyer  acknowledges
that the value of the Inventory equals or exceeds $20,000.00.

                  2. Purchase Price.

                           (a)  Amount of  Purchase  Price.  The term  "Purchase
Price" shall mean and be defined herein as the sum of Two Hundred Sixty Thousand
Dollars ($260,000.00).

                           (b) Payment of Purchase Price.  The Purchase Price to
be paid by the  Buyer to  Seller  pursuant  to this  Agreement  shall be paid as
follows:

                                     (i) Buyer has delivered funds in the amount
of ten thousand dollars ($10,000.00) to Seller on December 19, 1995, in exchange
for  Seller   granting  and  delivering  to  Buyer  an  Exclusive   License  and
Distribution Agreement.

                                     (ii) Buyer shall deliver certified funds or
by wire transfer,  whichever  Seller  requests,  in the amount of Forty Thousand
Dollars ($40,000.00) to Arizona Escrows, the escrow agent ("Escrow Agent") on or
before  January 31, 1995.  The escrow agent  deliver  these funds to the Seller.
Upon payment of these funds,  the Escrow Agent shall also deliver the Assignment
of Registration Of Trademark, fully executed by the Seller, to the Buyer.

                                     (iii) Buyer shall deliver a promissory note
("Note") in the amount of Two Hundred and Ten  Thousand  Dollars  ($210,000.00),
secured by a Security  Agreement for the Transferred  Assets that are being sold
to the Buyer.  The Note shall be  identical to the terms and  conditions  of the
promissory note set forth in Exhibit "A", attached hereto.

                                     (iv)  The  payments  pursuant  to the  Note
shall be paid  into a  collection  account  at  Arizona  Escrows  or such  other
collection agent as Seller may dictate.  Collection fees of the collection agent
shall be split between the Seller and Buyer on a 50/50 basis.

                                     (v) Buyer  acknowledges  that pursuant to a
prior  agreement  between the Seller and LANCE DREHER,  it will pay LANCE DREHER
("Dreher")  a fee or royalty  computed at the rate of three  percent(3%)  of the
gross selling price, for each unit of PRO-LINE products sold, or shipped to fill
orders by Buyer or any entity in which Buyer or any of the partners of Buyer has
any directing or controlling interest or position,  including but not limited to
the sales by the  Employees as defined in Section 5 (a).  This  monthly  royalty
shall be paid to Dreher  for 24  consecutive  months  commencing  with the first
payment on February 1, 1996. The

                                       -2-
<PAGE>
computation  of  royalty  shall be based on the  total  dollar  sales.  PRO-LINE
products  distributed  directly  or through  sales  personnel  free of charge to
retail stores for clinical trial to promote the sale of PRO-LINE  products shall
be royalty free.

                                     (vi)  Buyer  agrees  to keep  complete  and
accurate accounts of all data required for the computation of the license fee or
royalty referred to herein,  and on or before the last day of each year transmit
to Dreher a statement in writing showing in reasonable  detail the amount of the
license fee or royalty  accruing during the preceding  quarter,  together with a
remittance of the amount accruing for such period.

                                     (vii) Buyer agrees that Dreher, or Dreher's
authorized  agent,  shall have the right to examine  Buyer's  books and  records
during  regular  business  hours to such extent as may be necessary to determine
the  accuracy or  inaccuracy  of any royalty  statements  submitted  by Buyer to
Dreher, provided that Dreher shall pay the expense thereof and shall not request
more than one audit in any one calendar year.

                  3.  Liability of Seller Not Assumed by Buyer.  Buyer shall not
be  deemed by  anything  contained  herein to have  assumed  any  obligation  or
liability of Seller,  except those  obligations  associated with the Transferred
Assets.

                  4. Seller's Representations and Warranties. To induce Buyer to
enter into this Agreement,  and for the benefit of Buyer,  Seller represents and
warrants as follows:

                           (a) Company Status and Authority. Seller is a limited
liability  company duly organized,  validly  existing and in good standing under
the laws Of the State of  Arizona  and has the full  power to own,  operate  and
lease  the  assets  and  properties  being  sold  hereunder  and to carry on its
business  as it is now being  conducted.  The  execution  and  delivery  of this
Agreement,  the  consummation  of the  transaction  contemplated  hereby and the
fulfillment  of the terms hereof have been validly  authorized  by all necessary
action  including,  without  limitation,  members  approval,  and this Agreement
constitutes  the legal,  valid and  binding  obligation  of Seller,  enforceable
against Seller in accordance with its terms.

                           (b) Financial Records. Seller agrees to provide Buyer
a copy of its most recent sales  reports of PRO-LINE  products,  from April 1995
through September 30,1995

                           (c) Transfer of Trademark. The Seller shall cause the
Trademark to be assigned in the United States Patent and Trademark office.

                                       -3-
<PAGE>
                           (d)  Ownership  of  Rights.   Seller  represents  and
warrants  that it holds or will hold at the  closing  date all legal  rights and
title to the Trademark  used in or necessary to the operation of its business as
now conducted. There exists no known conflict with the trademark of others.

                           (e) Guarantee.  Seller shall guarantee that the total
gross monthly sales of the PRO-LINE products shall average  $40,000.00 per month
for six  consecutive  months  following the close of escrow.  If the total gross
sales for this six month period is less than $240,000.00,  the principal balance
due under the Note  shall be reduced  by the same  amount up to the  $160,000.00
balance due under the Note.  The total gross  monthly  sales shall include sales
from all sources,  including  the  Employees,  as defined  below,  and any other
persons  authorized by the Buyer to sell PRO-LINE  products.  However,  Buyer is
under no duty to market and sell these products  through  persons other than the
Employees.  [For example,  if the Employees  generate $200,000 for the six month
guarantee period and the Buyer's other sales personnel generate $100,000 for the
same  period,  the total  gross  sales shall be  $300,000.  Seller  would not be
responsible for any deficiency under this guarantee.  However,  if the Employees
generate $200,000 for the six month guarantee period and the Buyer's other sales
personnel  generate $10,000 for the same period,  the total gross sales shall be
$210,000;  and Seller shall be  responsible  for a deficiency  of $30,000.  This
deficiency  in total  gross  sales would cause the debt due under the Note to be
reduced by $30,000 so that the principal due under the Note would be $130,000.]

                           (f) Consulting.  Seller agrees to provide to Buyer at
least 25 hours of consulting services subsequent to the close of escrow.  Seller
will  usually  provide  these  consulting  services  from  1:00 pm to 5:00 pm on
Fridays.

                  5. Buyer's Representations and Warranties.

                           (a) Company Status and Authority.  Buyer is a limited
liability  company duly authorized,  validly existing and in good standing under
the laws of the state of  Arizona,  and has the full power to own,  operate  and
lease the assets and properties being sold hereunder to carry on its business as
it is now being  conducted.  The execution and delivery of this  Agreement,  the
consummation of the transaction  contemplated  hereby and the fulfillment of the
terms hereof have been validly  authorized by all necessary  actions  including,
without limitation,  members approval and this Agreement  constitutes the legal,
valid and  binding  obligation  of the Buyer,  enforceable  against the Buyer in
accordance with its terms.

                           (b)  Telemarketing  Employees.  At the  date  of this
Agreement,  Seller has two  telemarketing  employees,  Kyle  Deibler and Richard
Cisneros (the "Employees"), for marketing the PRO-LINE

                                       -4-
<PAGE>
products  and other  products  sold by Seller.  Buyer agrees to retain these two
telemarketers  at a  commission  of 15% of gross sales until the Note is paid in
full.  Further,  Buyer agrees that it will not employ ox interfere with Seller's
employment  of the  Employees  for 24  months  from the close of  escrow.  Buyer
acknowledges  that the Employees may continue to market PRO-LINE  products,  but
Buyer will not request, require or solicit the Employees to market any products,
other than PRO-LINE.

                           (c)  Non-competition.  For a period of 36 months from
the close of escrow,  Buyer will not market any new products  under the PRO-LINE
Trademark  that would  compete  with  products  sold under the  "Olympian  Labs"
tradename.  This non-competition  provision does not apply to products currently
sold under the PRO- LINE Trademark.

                           (d) Books and Records. Buyer agrees that Seller shall
have the right to inspect and audit the books and  records of Buyer  relating to
the sale of PRO-LINE  products  during the time that Seller  guarantees  monthly
gross sales as set forth in section 4 (e) above.  Seller Is rights shall include
the audit and inspection of distributors and raw material suppliers.

                           (e)  Advertising.  Buyer agrees to allocate a minimum
of 5,000 per month for  advertising  products sold under the PRO-LINE  trademark
beginning  April 1,  1996 and  continuing  for  three  months.  Thereafter,  and
continuing until the Note is paid in full, Buyer shall allocate 10% of the prior
months total gross sales to advertising.

                           (f)  Operation.  Buyer  shall  maintain  its  present
existence and shall  maintain  executive  personnel and management at a level of
experience and ability  equivalent to its present  personnel and management.  In
addition,  Buyer will cause the  manufacturing  of products  under the  PRO-LINE
trademark to be done with materials from those  manufacturers  listed in Exhibit
"B" attached hereto. If buyer desires to purchase  materials from a Manufacturer
not listed on Exhibit "B", Buyer must obtain written consent from Seller.

                  6. Closing.  The closing under this Agreement (the  "Closing")
shall take place at the  offices of Arizona  Escrows,  Phoenix,  Arizona,  on or
before January 31, 1996 at 2:00 p.m.,  Phoenix time, or at such other date, time
and place as may be agreed  upon by Seller  and Buyer,  which date is  sometimes
herein called the "Closing Date."

                  7. Deliveries by Seller. At the Closing,  Seller shall deliver
the fully executed  Assignment of  Registration of Trademark to the Escrow Agent
to be delivered to Buyer.

                                       -5-
<PAGE>
                  8.  Further  Assurances.  Seller and Buyer  shall  execute and
deliver all such other  instruments  and take all such other action as any party
may  reasonably  request  from  time to time  after  the  Closing,  in  order to
effectuate the  transactions  provided for herein.  The parties shall  cooperate
with each other and with their respective  counsel and accountants in connection
with any steps to be taken as a part of their respective  obligations under this
Agreement.

                  9. General Provisions.

                           (a) Notices. All notices, requests, demands and other
communications  required or permitted  under this Agreement  shall be in writing
and shall be deemed to have been duly given,  made and received.  Notices by fax
is permissible.

                           (b) Captions and Headings.  The paragraph captions in
this  Agreement  are for  convenience  only  and are not  intended  to  limit or
interpret the provisions hereof.

                           (c) Time.  Time is of the  essence of this  Agreement
and all provisions hereof.

                           (d)   Successors.   All  the  terms,   covenants  and
conditions  hereof  will be  binding  on and inure to the  benefit of the heirs,
executors, administrators, successors and permitted assigns of the parties.

                           (e) Entire  Agreement.  This  Agreement is the entire
agreement between the parties. It is specifically understood that this Agreement
may be altered,  amended or modified only by a writing  signed by both the Buyer
and Seller.

                           (f) Assignment.  The interest of the Buyer under this
Agreement may not be assigned in whole or in part by the Buyer without the prior
written  consent of the Seller,  which  consent may be withheld in the  absolute
discretion of the Seller.

                           (g) Governing Law. This  Agreement  shall be governed
by and construed in accordance with the laws of the State of Arizona.

                           (h)  Counterparts.  This Agreement may be executed in
counterparts  each of which when so executed  shall be deemed to be an original,
and such counterparts shall together constitute one and the same instrument.  It
shall not be necessary to the  effectiveness  of this Agreement that all parties
sign each counterpart, so long as each party signs at least one counterpart.

                           (i) Attorney's  Fees. In any action brought by either
party to enforce the  obligations of the other party under this  Agreement,  the
prevailing party will be entitled to collect

                                       -6-
<PAGE>
such  party's  reasonable  attorney's  fees,  court  costs and  expenses in such
action.

                           (j)   Arbitration.   In  the  event  any  dispute  or
controversy arising out of this Agreement cannot be settled by the parties, such
controversy or dispute shall be submitted to  arbitration  in Phoenix,  Arizona,
and for this purpose each party hereby expressly consents to such arbitration in
such place.  In the event the parties  cannot  mutually agree upon an arbitrator
and procedure to settle their dispute or  controversy  within  fifteen (15) days
after written demand by one of the Parties for arbitration,  then the dispute or
controversy  shall be  arbitrated  by a single  arbitrator  pursuant to the then
existing rules and regulations of the American Arbitration Association governing
commercial  transactions.  The decision of the arbitrator  shall be binding upon
the parties  hereto for all  purposes,  and judgment to enforce any such binding
decision may be entered in Superior  Court,  Maricopa  County,  Arizona (and for
this  purpose  each party  hereby  expressly  and  irrevocably  consents  to the
jurisdiction  of said  court) . At the  request  of  either  party,  arbitration
proceedings  shall  be  conducted  in the  utmost  secrecy.  In such  case,  all
documents,  testimonies  and records shall be received,  heard and maintained by
the arbitrator in secrecy,  available for inspection only by either party and by
their  attorneys  and experts  who shall  agree,  in advance and in writing,  to
receive all such information in secrecy. In all other respects,  the arbitration
shall be  conducted  pursuant to the Uniform  Arbitration  Act as adopted in the
State of Arizona and the then  existing  rules and  regulations  of the American
Arbitration  Association  governing  commercial  transactions to the extent such
mules and regulations are not inconsistent with such Act or this Agreement.

         IN WITNESS  WHEREOF,  the parties  have  executed  and  delivered  this
Agreement as of the date first above written.

SELLER:                                           BUYER:

OLYMPIAN GLOBAL, L.C., an                         HOUSTON INTERNATIONAL, L.L.C.,
Arizona limited liability                         an Arizona limited liability
company                                           company

By: Signature Illegible                           By: Signature Illegible
  -----------------------                           ----------------------------

Its:                                              Its: member
    ---------------------                             --------------------------




                                       -7-
<PAGE>
         This Note shall be governed by and  construed  according to the laws of
the State of Arizona.

         The  indebtedness  evidenced  by this  Note is  secured  by a  Security
Agreement of even date herewith, and reference is made to the Security Agreement
for rights as to acceleration of the indebtedness evidenced by this Note.

         IN WITNESS  WHEREOF,  these  present are  executed as of the date first
written above.


                                       MAKER:

                                       HOUSTON INTERNATIONAL, L.L.C.,
                                       an Arizona limited liability company




                                       By:  Signature Illegible
                                         ----------------------------------

                                       Its:________________________________
<PAGE>
                                   EXHIBIT "A"

                                 PROMISSORY NOTE
                                 ---------------

$210,000.00                                                      January 30,1996
- -----------                                                     Phoenix, Arizona

         FOR VALUE  RECEIVED,  the undersigned as Makers of this Note (Makers"),
promise  to pay to the  order of  OLYMPIAN  GLOBAL,  L.C.,  an  Arizona  limited
liability  company  ("Holders")  or order,  the principal sum Of Two Hundred Ten
Thousand Dollars  ($210,000.00)  with seven and one-half percent (7.5%) interest
per annum,  such principal and interest amount to be paid in lawful money of the
United States of America as follows:

         Payments under this note shall be as follows:

                  (A)  On  or  before  February  28,  1996,  Maker  shall  pay a
principal reduction payment of $50,000.00.

                  (B) On or  before  February  28,  1997,  Maker  shall  pay the
remaining unpaid principal of $160,000 and accrued interest. Notwithstanding the
above, if the Maker becomes a publicly traded company prior to the maturity date
of this  Note,  Maker  shall pay all  remaining  unpaid  principal  and  accrued
interest to Holder within 30 days after Holder's stock is offered to the public.

         In addition to the payment of interest of 7.5% as set forth above,  the
Makers shall pay the Holders additional interest in the amount of Forty Thousand
Dollars ($40,000) if and only if the gross annual sales of the PRO-LINE products
sold between  February 1, 1996 and January 31, 1997 exceeds Six Hundred Thousand
Dollars ($600,000).  If the total gross annual sales for this time period do not
exceed  $600,000,  no  additional  interest  will be owed by the  Makers  to the
Holders of this Note.  The term "Gross Sales" means all income and revenues from
the  sale  of  products   sold  under  the  PRO-LINE   trademark.   Any  noncash
consideration,  including  promissory  notes or other evidences of indebtedness,
received by the makers shall be included in the Gross Sales.

         There will be a ten (10) day grace  period after which a late charge of
five (5%) percent of the delinquent amount will be added. If any payment becomes
sixty (60) days delinquent, the loan will be considered in default.

         Maker shall have the option to prepay this Note, in full or in part, at
any time without penalty.

         Maker, (i) waives demand,  diligence,  presentment for payment, protest
and demand, and notice of extension,  dishonor protest, demand and nonpayment of
this Note; (ii) consents that the holder hereof may extend the time of payment.

         This Note shall be binding  upon Maker and its  successors  and assigns
and shall inure to the benefit of the holder hereof.
<PAGE>
         This Note shall be governed by and  construed  according to the laws of
the State of Arizona.

         The  indebtedness  evidenced  by this  Note is  secured  by a  Security
Agreement of even date herewith, and reference is made to the Security Agreement
for rights as to acceleration of the indebtedness evidenced by this Note.

         IN WITNESS  WHEREOF,  these  present are  executed as of the date first
written above.


                                     MAKER:
                                     HOUSTON INTERNATIONAL, L.L.C.,
                                     an Arizona limited liability company


                                     By: Signature Illegible
                                       ----------------------------------
                                     Its:________________________________
<PAGE>
                                    ADDENDUM
                                    --------

         This  addendum  ("Addendum")  to the  Asset  Purchase  Agreement  dated
December 191, 1995 (the  "Agreement") is entered this 30th day of January,  1996
between Olympian Global,  L.C., an Arizona limited liability  company,  P.O. Box
12461, Scottsdale, Arizona 85267 ("Seller") and Houston International,  L.C., an
Arizona  limited  liability  company,  having  its  principal  office at 1719 W.
University, Suite 187, Tempe, Arizona 85281 ("Buyer").

         The  Seller  and  Buyer  wish to  amend  and  modify  the  terms of the
Agreement as set forth below, whereby the parties agree as follows:

         1. Seller  represents  and warrants that the  tradename  "PRO- LINE" is
free and clear of all liens as of the date of this  Agreement.  Should any liens
be claimed by third parties to have  attached to the  trademark  "PRO-LINE" at a
time prior to the Agreement,  Seller shall cause said lien to be released at its
own cost.

         2. All other terms and  conditions of the Agreement and first  Addendum
shall remain unchanged.

         IN WITNESS  WHEREOF,  the parties  have  executed  and  delivered  this
Agreement as of the date first written above.

SELLER:                                     BUYER:

OLYMPIAN GLOBAL, L.C., an                   HOUSTON INTERNATIONAL, L.L.C.,
Arizona limited liability                   an Arizona limited liability
company                                     company


By: Signature Illegible                     By: Signature Illegible
  ---------------------------                 ----------------------------
Its: Member                                 Its:__________________________

                                            By: Signature Illegible
                                              ----------------------------
                                            Its:__________________________
<PAGE>
                               SECURITY AGREEMENT


DATED:                                January 30, 1996

SECURED PARTY:                        OLYMPIAN GLOBAL, L.C., an Arizona
                                      limited liability company,
                                      hereinafter referred to as "Secured Party"

DEBTOR:                               HOUSTON INTERNATIONAL, L.L.C., an
                                      Arizona limited liability company,
                                      hereinafter referred to as "Debtor"

EXHIBIT A:                            Description of Collateral

RECITALS:

         Debtor has executed a promissory note of even date herewith, payable to
Secured  Party,  the terms and  provisions of which are  incorporated  herein by
reference  (hereinafter  the "Note"),  pursuant to which Debtor has borrowed the
principal sum of TWO HUNDRED TEN THOUSAND DOLLARS ($210,000.00); and

         The parties  have Agreed that the Secured  Party should have a security
interest  in certain  personal  property of the  Debtor,  as  security  for this
payment of the Note. Therefore, the parties hereby agree as follows:

SECTION 1.                 COLLATERAL.

                  1.01  Property   Comprising  the   Collateral.   For  valuable
consideration,  the receipt and sufficiency of which is hereby acknowledged, for
the  purpose of  securing  performance  of all of  Debtor's  obligations  to the
Secured  Party  under the Note and under such other  documents  and  instruments
executed or to be executed by the Debtor in relation to the Note, including, but
not limited to, this security Agreement, all costs of collection, legal expenses
and  attorneys,  fees incurred by the Secured  Party upon the  occurrence of any
default under any of the foregoing,  in collecting or enforcing  payment of said
indebtedness  or in  preserving,  protecting,  or  realizing  on the  collateral
herein,  and any obligations of Debtor to Secured Party,  which may hereafter in
any matter arise,  Debtor hereby grants to Secured Party a security interest in,
personal property of the Debtor, described on Exhibit "A" (the "Collateral").

                  This security interest shall secure Debtor's obligation to pay
all amounts due and owing under the Note,
<PAGE>
including principal and interest,  together with all costs and expenses incurred
by Secured Party in the collection and enforcement of the same.

                  1.02 Debtor's  Representation and Warranties as to Collateral.
Debtor hereby represents, warrants and covenants that:

                           (a) Debtor will immediately  notify the Secured Party
         in writing of any change in the  location of the  Collateral  from that
         shown in this  Security  Agreement,  and shall  also on demand  furnish
         Secured Party such further information, and will execute and deliver to
         Secured Party such  financing  statements  and other  documents in form
         satisfactory  to  Secured  Party,  and will do all such acts and things
         that  Secured  Party  at any time or from  time to time may  reasonably
         request or as may be necessary or appropriate to establish and maintain
         a protective  security  interest in the  Collateral as security for the
         obligations  of Debtor,  subject to no adverse  liens or  encumbrances,
         except as otherwise expressly permitted hereby;

                           (b)  Debtor  will not sell or offer to sell,  assign,
         pledge,  lease or otherwise  transfer or encumber the collateral or any
         interest  therein,  without the prior written consent of Secured Party,
         except as otherwise provided herein; and,

                           (c) Debtor will not cancel,  terminate or destroy the
         Collateral or its interest in the Collateral, nor use the Collateral in
         violation of any statute, ordinance or policy of insurance thereon.

                           (d) Debtor  acknowledges that the Collateral consists
         of high-quality  nutritional supplements.  Therefore,  Debtor shall not
         take any action that will  diminish the value of the  Collateral in the
         marketplace;  including,  but  not  limited  to,  the  use of  inferior
         materials in the production of nutritional  supplements  sold under the
         PRO-LINE trademark.

                           (e) Debtor  shall keep the  Collateral  free from any
         adverse lien, claim, security interest, except when consented to by the
         Secured Party,  or  encumbrance  whether  voluntarily ox  involuntarily
         created and in good order and repair and shall not waste or destroy the
         Collateral or any part thereof.  Debtor shall not use the Collateral in
         violation  of any statute or  ordinance.  Debtor will  promptly  notify
         Secured  Party of any levy,  restraint  or any other  seizure  by legal
         process  or  otherwise  of  any  part  of  the  Collateral,  and of any
         threatened or filed
                                       - 2
<PAGE>
         claims or proceedings that might in any way affect or impair any of the
         terms hereof;

                           (f)  Debtor  shall  from time to time do all acts and
         things and will execute and file all instruments in a timely and proper
         manner as required by Secured Party to establish,  maintain,  continue,
         guarantee and protect the security interests and assignments  contained
         herein.

                  1.03 Lien Against Collateral. At its option, Secured Party may
discharge liens or security  interests or other  encumbrances at any time levied
or placed on the Collateral.  To the extent permitted by the uniform  Commercial
Code or similar  statutes  for the state where the  collateral  is located  (the
"Applicable  Law"),  Debtor agrees to reimburse  Secured Party on demand for any
payment made or any expense  incurred by Secured Party pursuant to the foregoing
authorization.  Until default,  Debtor may have possession of the Collateral and
use it in any lawful manner not  inconsistent  with this Security  Agreement and
not inconsistent with any policy of insurance thereon.

SECTION 2.                 DEFAULT.

                  2.01 Events of Default. The occurrence of any of the following
         events shall be deemed an event of default hereunder:

                  (a) If the Collateral is sold or disposed of;

                  (b) If Debtor  defaults in performing any of its  obligations,
         promises,  covenants  or  agreements  contained  herein or in the Note,
         given by Debtor to Secured Party;

                  (c) If  Debtor uses the  Collateral in violation of any law or
         governmental regulation;

                  (d) If Debtor fails to pay promptly when due all liens,  fees,
         charges and assessments upon the Collateral.

                  2.02 Occurrence of Default.  On the occurrence of any event of
default,  and at any time  thereafter,  Secured Party, at its option may declare
all  obligations  secured hereby  immediately due and payable and take immediate
and  exclusive  possession of the  collateral  Secured Party shall have remedies
under the Uniform  Commercial Code, as adopted in the state where the Collateral
is located,  including,  without  limitation,  the right to take  immediate  and
exclusive possession of the Collateral.

                  2.03  Remedies  Cumulative.  The  remedies  of  secured  Party
hereunder  are  cumulative,  and the exercise of any one or more of the remedies
provided  for herein or under the  Uniform  Commercial  Code,  as adopted in the
state where the Collateral is located, shall not be construed as a waiver of any
of the other remedies of
                                       -3
<PAGE>
Secured Party so long as any part of Debtor's obligations remain unsatisfied.

SECTION 3.                 GENERAL PROVISIONS.

                  3.01 Binding Effect. No waiver by secured party of any default
shall  operate  as a waiver of any other  default  or of the same  default  on a
future  occasion.  All  rights of Secured  Party  hereunder  shall  inure to the
benefit of its successors and assigns;  and all obligations of Debtor shall bind
his heirs,  executors, or administrators or his or its successors or assigns. If
there be more than one Debtor, the obligations shall be joint and several.  This
Security Agreement shall become effective when signed by Debtor.

                  3.02 Governing Law. The terms and provisions  contained herein
shall, unless the context otherwise requires,  have the meaning and be construed
under the laws of the State of Arizona.

                  3.03  Attorneys'   Fees  and  Costs.   Debtor  agrees  to  pay
reasonable  attorneys,  fees and all  other  costs  and  expenses  which  may be
incurred by Secured Party in the enforcement of this Security Agreement.

                  3.04  Severability.  Any provision  hereof which may be deemed
invalid or unenforceable under any applicable laws or a governmental  regulation
shall be deemed  omitted  therefrom or deemed  modified,  as  appropriate.  Such
omissions  shall  not  invalidate  the  remaining  provisions  of this  Security
Agreement.

                  3.05 Modifications. No modification of this Security Agreement
or waiver off any provision  hereof shall be deemed  effective unless in writing
and signed by all parties  hereto,  and any waiver  granted  shall not be deemed
effective  except  for  the  instance  and  in  the  circumstances  particularly
specified thereon. Time is of the essence for each term and condition herein.

                  3.06 Waiver of Exemptions.  Debtor hereby acknowledges express
intent to hereby waive and abandon all personal property  exemptions  granted by
law upon the goods which are the subject of this Security Agreement.
                                       -4
<PAGE>
NOTICE: By signing this Security Agreement, Debtor waives all rights provided by
law to claim such goods exempt from the process.

SECURED PARTY:                                    DEBTOR:

OLYMPIAN GLOBAL, L.C., an                         HOUSTON INTERNATIONAL, L.L.C.,
Arizona limited liability                         an Arizona limited liability
company                                           company





By: Signature Illegible                           By:  Signature Illegible 
  ------------------------                          ---------------------------
Its: Member                                       Its: Manager
    ----------------------                            -------------------------


                                                  By:  Signature Illegible 
                                                    ---------------------------
                                                  Its: Manager
                                                      -------------------------

                                       -5-
<PAGE>
                                    EXHIBIT A
                                    ---------

                                   COLLATERAL

1.       All  rights,  title and  interest to the  trademark  and  tradename  of
         "PRO-LINE".
                                       -6

                       FACILITIES AND MANAGEMENT AGREEMENT

         This  Management  Agreement  is  entered  into  as of  this  2nd day of
January,  1995  by  and  between  Belnik  Investment  Group,  Inc.,  an  Arizona
corporation doing business as Freedom Wholesalers and  African-American  Trading
Co.,  Inc.  ("Freedom")  and Houston  Enterprises,  L.L.C.,  an Arizona  limited
liability company doing business as Houston International, L.L.C. ("Houston");

                                    RECITALS:

         WHEREAS,  Freedom  is in  the  business  of  packaging,  marketing  and
distributing  natural dietary  supplements  consisting of Naturally High TM, the
Stuff TM and Naturally Klean R Herbal Tea and requires management  assistance in
overseeing  its  operations  and  plant,  equipment  and  staff to  conduct  its
business;

         WHEREAS,  Houston manages its own business of packaging,  marketing and
distributing  its  own  dietary  supplements  including,  but  not  limited  to,
Naturally  Klean R Herbal Tea, has its own plant,  equipment  and staff,  and is
willing to make such plant, equipment and staff available to Freedom for its use
and to provide the management  assistance needed by Freedom for the compensation
and on the other terms herein stated;

                                   AGREEMENT:

         NOW, THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency  of  which  is  hereby  acknowledged,  and in  consideration  of the
parties' mutual covenants contained herein, the parties agree as follows:

         1. Plant, Equipment and Staff. Houston shall permit Freedom to use such
of its plant,  equipment and staff as Freedom shall reasonably require from time
to time.

         2. Management.  Houston shall provide such management of Freedom as the
officers of Freedom shall, from time to time, reasonably require of Houston.

         3.  Compensation.  Freedom shall reimburse Houston for the prorata cost
of Houston's  plant,  equipment  and staff which Freedom may use and for any and
all  expenses it may incur in  providing  the  management  of Freedom  which the
officers of Freedom may request.  In addition,  Freedom shall compensate Houston
for the  management  services  it  provides  Freedom  at the  rate  the  parties
establish  either prior to Houston  providing the desired  management  services,
during the  providing of such  services,  at the  conclusion of the providing of
such services, monthly, quarterly, or otherwise.  Freedom's transfer of funds to
Houston  and  Houston's  acceptance  of such funds  shall  constitute  agreement
between  such  parties  that the  funds  so  transferred  constitute  acceptable
compensation  to Houston  for the  services  provided  by it to Freedom  for the
period prior to the transfer, unless otherwise stated.

         4. Term.  This  Agreement  shall continue in effect for a term of three
(3) years
<PAGE>
commencing on the date hereof and shall automatically  extend for additional one
(1) year periods unless either party shall give the other party ninety (90) days
written notice of its desire to terminate this Agreement.

         5. Notice. Any notice or other  communication  required or permitted to
be given to the parties  hereto  shall be deemed to have been given if delivered
by hand or forty-eight  (48) hours after being mailed by certified or registered
United States mail, return receipt  requested,  first-class  postage pre-paid or
twelve  (12)  hours  after  the time  dispatched  by  telegram  or by  facsimile
transmission,  in each  case,  addressed  as  follows:  if to  Freedom,  Freedom
Wholesalers,  1719 W. University,  Suite 187, Tempe,  Arizona 85281,  Attention:
Todd P. Belfer,  President;  if to Houston, Hooman Nikzad. Managing Member, 1719
W. University, Suite 187, Tempe, Arizona 85281, with a copy to Robert K. Rogers,
Robert K. Rogers & Associates,  5725 N. Scottsdale Road, Suite 190,  Scottsdale.
Arizona  85250,  or such other  addresses as the parties hereto may from time to
time designate in writing.

         6. Successors and Assigns. This Agreement shall inure to the benefit of
and be binding upon the parties hereto and upon their respective  successors and
assigns.

         IN WITNESS WHEREOF,  the parties hereto have duly caused this Agreement
to be duly executed as of the day and year first above written.

                                       Freedom:

                                       Belnik Investment Group, Inc.

                                       /s/ Todd P. Belfer
                                       ------------------------------
                                       Todd P. Belfer, President

                                       Houston:

                                       Houston Enterprises, L.L.C.

                                       /s/ Hooman Nikzad
                                       ------------------------------
                                       Hooman Nikzad, Managing Member

                                       /s/ Todd P. Belfer
                                       ------------------------------
                                       Todd P. Belfer, Manageing Member

                                        2

                                  EXHIBIT 10.24

                                 STANDARD LEASE


Lease Preparation Date: April 25, 1995

Lessor: PS PARTNERS VI, LTD., A CALIFORNIA LIMITED PARTNERSHIP

Lessee: HOUSTON INTERNATIONAL, LLC AN ARIZONA COMPANY

Trade Name:


1.       Lease Terms

         1.01  Premises:   The  Premises  referred  to  in  this  Lease  contain
approximately  14,064  rentable  square  feet and are  located on Exhibit "A" as
described in Exhibit "A1" attached.  The address of the leased  Premises is 1719
W. University #187, Tempe, AZ 85281.

         1.02 Project:  The Project consists of  approximately  197,716 rentable
square feet.

         1.03 Lessee's Notice Address: Lessee's Notice Address is the address of
the leased  Premises as defined in  paragraph  1.01 unless  otherwise  specified
here: .

         1.04 Lessor's  Notice  Address:  Lessor's Notice Address is PS BUSINESS
PARKS,  1755 W.  University  #121,  Tempe,  AZ 85281.  Mail rent payments to: PS
Partners VI, Ltd., c/o Katie Yost, 3116 E. Shea Blvd #125, Phoenix, AZ 85028.

         1.05 Lessee's Permitted Use: sales and packaging of herbal products.

         1.06 Lease Term: The Lease Term commences on August 1, 1995 and ends on
July 31, 2000 (60 months, and -0- days).

         1.07 Base Monthly  Rent:  $6937.28 in lawful money of the United States
of America. Base rent $6610.08 + tax 327.99.

         1.08 Base Monthly  Rent  Increases - in the event that  Lessee's  Lease
Term is greater than twelve (12) months, Lessee's Base Rent will increase to the
amounts at the time noted below:

         Effective Date of Increase                 New Base Monthly Rent

         August 1, 1996                             $6940.58*
         August 1, 1997                             $7287.61*
         August 1, 1998                             $7651.99*
                                        1
<PAGE>
August 1, 1999                                    $8034.59* plus applicable tax

         1.09 Security Deposit: $6937.28 in lawful money of the United States of
America.

         1.10  Lease  Documentation  Fee:  $ n/a in lawful  money of the  United
States of America.

         1.11 Proportionate Share: Lessee's Proportionate Share is 071.

2.       Demise and Possession

         2.01 Lessor leases to Lessee and Lessee leases from Lessor the Premises
described in 1.01. By entering the  Premises,  Lessee  acknowledges  that is has
examined  the  Premises  and accepts the  Premises  in their  present  condition
subject to any additional work Lessor has agreed to do as stated on Exhibit B.

         2.02 If for any reason Lessor cannot deliver possession of the Premises
on the date the Lease  commences,  Lessor shall not be subject to any  liability
nor shall the validity of this Lease be affected.  If Lessee has not caused such
delay there shall be a proportionate reduction of the Base Monthly Rent covering
the period between the  commencement  of the Lease Term and the date when Lessor
can deliver possession. However, either Lessor or Lessee, unless it is the cause
of the delay,  has the right to cancel  this Lease by  written  notification  if
possession of the Premises is not delivered  within ninety (90) days of the date
the Lease Term commences.

3.       Base Monthly Rent

         3.01 Base Monthly Rent: On the first day of each calendar  month of the
Lease Term,  Lessee  will pay,  without  deduction  or offset,  prior  notice or
demand, Base Monthly Rent at the place designated by Lessor.  However, the first
month's rent is due and payable upon execution of this Lease.  In the event that
the Term of this Lease  commences or ends on a day other than the first day of a
calendar  month,  a  prorated  amount  of Base  Monthly  Rent  shall be due upon
execution and it will be calculated using a thirty (30) day month.

         3.02 Any  installment  of rent or any other charge payable which is not
paid within five (5) days after it becomes due will be  considered  past due and
lessee will pay to Lessor as Additional  Rent a late charge equal to ten percent
(10%) of such installment or the sum of twenty-five dollars ($25.00),  whichever
is greater,  for each month or fractional  month  transpiring  from the date due
until paid. A twenty-five dollar ($25.00) handling charge will be paid by Lessee
to Lessor for each returned  check and,  thereafter,  Lessee will pay all future
payments of rent or
                                        2
<PAGE>
other charges due by money order or cashier's check.

         3.03  The  amount  of  the  Base   Monthly  Rent   includes   projected
construction of Lessee's  improvements as indicated on Exhibit "B" attached.  In
the event that  Lessee  requests  Lessor to  construct  additional  improvements
and/or final construction costs exceed original  estimates,  Lessor may increase
the Base Monthly Rent according to the terms and conditions  outlined on Exhibit
"B", or elsewhere in this Lease.

4.       Additional Rent

         4.01 All charges  payable by Lessee  other than Base  Monthly  Rent are
called "Additional Rent". Unless this Lease provides otherwise,  Additional Rent
is to be paid with the next  monthly  installment  of Base  Monthly  Rent and is
subject to the provisions of 3.02.  The term "rent"  whenever used in this Lease
means Base Monthly Rent and Additional Rent.

         4.02 Based on  Lessee's  Proportionate  Share  defined in 1.11,  Lessee
agrees to pay as  Additional  Rent to Lessor its pro rata  share of any  parking
charges, utility surcharges,  occupancy taxes, or any other costs resulting from
the  statutes  or  regulations,  or  interpretations  thereof,  enacted  by  any
governmental authority in connection with the use or occupancy of the Project or
the parking facilities serving the Project, or any part thereof.

5.       Security Deposit

         5.01 If Lessee  defaults  with respect to any  provision of this Lease,
Lessor  may  retain,  use or apply all or any part of the  Security  Deposit  to
compensate  Lessor for any loss or damage suffered by Lessee's default including
but not limited,  the payment of Base  Monthly  Rent,  Additional  Rent or other
rental sums due,  and for  payment of amounts  Lessor is  obligated  to spend by
reason of  Lessee's  default.  If any portion is so  retained,  used or applied,
Lessee,  upon demand,  will deposit with Lessor an amount  sufficient to restore
the deposit to its original  amount,  as adjusted  per 1.08.  Lessor will not be
required to keep the  Security  Deposit  separate  from its general  funds,  and
Lessee will not be entitled  to interest on it. If Lessee  fully and  faithfully
performs  every  provision  of this  Lease,  the  Security  Deposit or a balance
thereof will be returned to Lessee within the time frame permitted by law. In no
event will  Lessee have the right to apply any part of the  Security  Deposit to
any rents  payable  under this Lease.  At the same time the Base Monthly Rent is
adjusted,  the  Security  Deposit  will also be  adjusted  to equal the new Base
Monthly Rent amount and the deficiency is due concurrently with the next payment
of Base Monthly Rent.

6.       Lease Documentation Fee
                                        3
<PAGE>
         6.01 For  expenses  incurred  related  to the  execution  of this Lease
including,   but  not  limited  to,  legal  costs,   administration  and  credit
verification,  Lessee will pay Lessor upon  execution  of this Lease,  the Lease
Documentation Fee. Lessee acknowledges and agrees that this fee is nonrefundable
and will not be credited to any sums which may become due during the Lease Term.

7.       Use of Premises; Quiet Conduct

         7.01 The Premises may be used and occupied only for Lessee's  Permitted
Use as shown in 1.05 and for no other purpose,  without obtaining Lessor's prior
written  consent.  Lessee  will  comply  with  all  covenants,   conditions  and
restrictions affecting the Premises.  Lessee will promptly comply with all laws,
ordinances,  orders and  regulations  affecting  the  Premises.  Lessee will not
perform  any act or carry on any  practices  that may injure the  project or the
Premises or be a nuisance or menace,  or disturb  the quiet  enjoyment  of other
lessees in the Project  including  but not  limited to  equipment  which  causes
vibration,  use or storage of  chemical,  or heat or noise which is not properly
insulated.  Lessee will not cause,  maintain or permit any outside storage on or
about the Premises. In addition, Lessee will not allow any condition or thing to
remain on or about the Premises  which  diminishes  the  appearance or aesthetic
qualities of the Premises  and/or the Project or the surrounding  property.  The
keeping  of a dog  or  other  animal  on or  about  the  Premises  is  expressly
prohibited.

8.       Tenant Improvements

         8.01 Tenant Improvements to be performed in the Premises,  if any, will
be performed in  accordance  with the terms and  provisions  entitled  "Lessor's
Work"  contained  in "Exhibit  B"  attached.  Thereafter  during the Lease Term,
Lessor will be under no  obligation  to alter,  change,  decorate or improve the
Premises.

9.       Parking

         9.01 Lessee and Lessee's customers,  suppliers, employees, and invitees
have the non-exclusive right to park in common with other Lessees in the parking
facilities as designated by Lessor.  Lessee agrees not to overburden the parking
facilities  and agrees to cooperate  with Lessor and other Lessees in the use of
the parking  facilities.  Lessor  reserves the right to, on an equitable  basis,
assign specific spaces with or without charge to Lessee as Additional Rent, make
changes in the parking  layout from time to time,  and to  establish  reasonable
time limits on parking.

10.      Utilities (delete 10.01 or 10.02)

         10.01 Serviced Space:  Lessor will provide to the Premises  between the
hours of 8 a.m. and 6 p.m., Monday through Friday or
                                        4
<PAGE>
any other time periods established by Lessor:

         A.  All  utilities,   including  heat,  electricity,   gas,  power  and
air-conditioning,  if any, as are commercially reasonable for normal office use.
If Lessee uses heat, water, electricity, gas power or air-conditioning in excess
of normal  office use,  Lessor may  separately  meter such  services at Lessee's
expense where  applicable,  or Lessor,  may at its sole  discretion,  measure or
estimate the increased use and Lessee will pay Lessor, on demand,  the amount of
the measured or estimated increase.  Lessor will also provide water for restroom
facilities (if any).  However,  Lessee will pay all services directly contracted
for by Lessee.

         B. Such janitorial service as is commercially reasonable.

         10.02  Unserviced  Space:  Lessee  will pay for all water,  gas,  heat,
light, power, sewer,  electricity,  or other services metered,  chargeable to or
provided to the Premises.  Lessor reserves the right to install  separate meters
for any such utility.

         10.03 Lessor will not be liable or deemed in default to Lessee nor will
there be any abatement of rent for any interruption or reduction of utilities or
services not caused by any act of Lessor or any act reasonably  beyond  Lessor's
control.  Lessee agrees to comply with energy conservation  programs implemented
by Lessor by reason of enacted laws or ordinances.

         10.04  Lessee will  contract and pay for all  telephone  and such other
services for the Premises subject to the provisions of 11.03.

11.      Alterations, Mechanic's Liens

         11.01  Lessee  will not make any  alterations  to the  interior  of the
Premises,  without Lessor's prior written consent which will not be unreasonably
withheld.  If Lessor gives its consent, no such alterations will proceed without
Lessor's prior written approval of (i) Lessee's  contractor (ii) certificates of
insurance by Lessee's  contractor for public liability and automobile  liability
and    property    damage     insurance    with    limits    not    less    than
$1,000,000/$250,000/$500,000   respectively   endorsed  to  show  Lessor  as  an
additional insured and for worker's  compensation as required and (iii) detailed
plans and  specification  for such work.  In addition,  before  alterations  may
begin,  valid  building  permits or other  permits or licenses  required must be
furnished to Lessor, and, once the alterations begin, Lessee will diligently and
continuously  pursue their completion.  At Lessor's option,  any alterations may
become part of the realty and belong to Lessor.  If requested by Lessor,  Lessee
will pay, prior to the  commencement  of  construction  an amount  determined by
Lessor necessary to cover the costs of
                                        5
<PAGE>
demolishing such alterations  and/or the cost of returning the Premises to their
condition  before such  alteration.  Lessor may also  require  Lessee to provide
Lessor,  at  Lessee's  sole  expense,  a payment  and  performance  bond in form
acceptable to Lessor, in a principal amount not less than one and one-half times
the estimated cost of such  alterations,  to insure Lessor against any liability
for mechanic's and materialmen's  liens and to insure completion of the work and
such bond will  continue  in force for a period no less than 131 days  after the
completion of such work.


         11.02  Notwithstanding  anything  in 11.01,  Lessee may,  with  written
consent  of  Lessor,  install  (trade  fixtures,  equipment,  and  machinery  in
conformance with the ordinances of the applicable city and county,  and they may
be removed upon  termination of this Lease provided the Premises are not damaged
by their removal.

         11.03   All   private    telephone   systems   and/or   other   related
telecommunications  equipment  and lines may not be installed  without  Lessor's
prior written consent.  In addition,  if Lessor gives consent all equipment must
be installed  within  Lessee's  Premises  and,  upon  termination  of this Lease
removed  and  the  Premises  restored  to the  same  condition  as  before  such
installation.

         11.04  Lessee  will pay all  costs  for  alterations  and will keep the
Premises,  the Project and the  underlying  property free from any liens arising
out of work performed  for,  materials  furnished to, or obligation  incurred by
Lessee.

         11.05 Lessor will have the right to construct or permit construction of
tenant  improvements in or about the Project for existing and new lessees and to
alter any public areas in and around the Project. Notwithstanding anything which
may be  contained  in this Lease,  Lessee  understands  this right of Lessor and
agrees that such  construction will not be deemed to constitute a breach of this
Lease by Lessor and Lessee  waives  any such claim  which it might have  arising
from such construction.

12.      Fire Insurance; Hazards and Liability Insurance

         12.01 Except as  expressly  provided as Lessee's  Permitted  Use, or as
otherwise  consented  to by Lessor  in  writing,  Lessee  shall not do or permit
anything  to be done  within or about  the  Premises  which  will  increase  the
existing  rate of  insurance  on the  Project or cause the  cancellation  of any
insurance  policy  covering the Project.  Nor shall Lessee keep, use or sell, or
permit anyone to keep, use or sell, any article in or about the Premises,  which
may be  prohibited by the standard  form of fire and other  insurance  policies.
Lessee  shall,  at its  sole  cost and  expense,  comply  with any  requirements
pertaining to the Premises
                                        6
<PAGE>
or  any  insurance  organization  insuring  the  Project  and  Project-  related
apparatus.  Lessee agrees to pay to Lessor, as Additional Rent, any increases in
premiums  on  policies  resulting  from  Lessee's  Permitted  Use or  other  use
consented to by Lessor which increases  Lessor's  premiums or requires  extended
coverage by Lessor to insure the Premises.

         12.02  Lessee,  at all  times  during  the  term of this  Lease  and at
Lessee's  sole  expense,  will  maintain a policy of standard  fire and extended
coverage  insurance  with "all risk" coverage on all Lessee's  improvements  and
alterations in or about the Premises and on all personal  property and equipment
to the extent of at least ninety percent (90%) of their full replacement  value.
The  proceeds  from this  policy will be used by Lessee for the  replacement  of
personal  property and equipment and the  restoration  of Lessee's  improvements
and/or  alterations.  This policy will contain any express  waiver,  in favor of
Lessor, of any right of subrogation by the insurer.

         12.03  Lessee,  at all  times  during  the  term of this  Lease  and at
Lessee's sole expense, will maintain a policy of comprehensive general liability
coverage  with  limits of not less than  $1,000,000  combined  single  limit for
bodily injury and property damage  insuring  against all liability of Lessee and
its authorized representatives arising out of or in connection with Lessee's use
or occupancy of the  Premises.  This policy of insurance  will name Lessor as an
additional  insured and will  include an express  waiver of  subrogation  by the
insured in favor of Lessor and will release Lessor from any claims for damage to
any person,  to the Premises,  and to the Project,  caused by or resulting  from
risks which are to be insured against by Lessee under this Lease.

         12.04 All insurance  required to be provided by Lessee under this Lease
will (a) be issued by an  insurance  company  authorized  to do  business in the
state in which the Premises are located and which is satisfactory to Lessor, (b)
be primary and  noncontributing  with any insurance  carried by Lessor,  and (c)
contain an endorsement  requiring at least thirty (30) days prior written notice
of  cancellation to Lessor before  cancellation or change in coverage,  scope or
limit of any policy. Lessee will deliver a certificate of insurance or a copy of
the policy to Lessor  within thirty (30) days of execution of the Lease and will
provide evidence of renewed insurance coverage at each anniversary, prior to the
expiration of any current policies. Lessee's failure to provide evidence of this
coverage to Lessor may, in Lessor's sole discretion,  constitute a default under
this Lease.

13.      Indemnification and Waiver of Claims

         13.01 Lessee waives all claims against Lessor for damage to
                                        7
<PAGE>
any property in or about the  Premises  and for injury to any person,  including
death  resulting  therefrom,  regardless of cause or time of occurrence.  Lessee
will defend,  indemnify  and hold Lessor  harmless  from and against any and all
claims,  actions,  proceedings,  expenses,  damages and  liabilities,  including
attorneys'  fees,  arising out of,  connected with, or resulting from any use of
the Premises by Lessee, its employees,  agents,  visitors, or licensees,  except
for any  damage or injury  which is the  direct  result of  intentional  acts by
Lessor, its employees, agents, visitors or licensees.

14.      Repairs

         14.01 Lessee shall, at its sole expense, keep and maintain the Premises
and every  part  thereof  (excepting  air-conditioning,  common  use  equipment,
exterior walls and roof, which Lessor agrees to repair unless damages are due to
the neglect or intentional acts of Lessee or its agents, employees, visitors, or
licensees),  including interior windows,  skylights, doors, any store fronts and
the interior of the Premises, in good and sanitary order,  condition and repair.
Lessee will also,  at its sole cost keep and maintain all  utilities,  fixtures,
plumbing and  mechanical  equipment  used by Lessee in good order and repair and
furnish all expendables  (light bulbs (unless provided by Lessor),  paper goods,
soaps,  etc.) used in the  Premises.  The  standard for  comparison  and need of
repair will be the condition of the Premises at the time of commencement of this
Lease and all repairs will be made by a licensed and bonded contractor  approved
by Lessor.

         14.02  Lessee  will not make  repairs  to the  Premises  at the cost of
Lessor,  whether by  deduction  of rent or  otherwise  or vacate the Premises or
terminate the Lease with abatement or  termination  of rent because  repairs are
not made. If during the Term, any alteration, addition or change to the Premises
is required by legal  authorities,  Lessee, at its sole expense,  shall promptly
make the same.  Lessor  reserves the right to make any such repairs not repaired
or maintained in good condition by Lessee and Lessee shall reimburse  Lessor for
all such costs upon demand. If such repairs have not been made within 30 days of
notice to repair by Lessor to  Lessee,  Lessor  may make such  repairs  and such
costs of repairs  shall be at  Lessee's  expense.  Failure to pay such  expenses
within 30 days of presentation shall be deemed to be a breach of this Lease.

15.      Auctions, Signs, Landscaping

         15.01  Lessee  will not conduct or permit to be  conducted  any sale by
auction on the Premises.  Lessor will have the right to control  landscaping and
approve the placement,  size, and qualify of signs. Lessee shall comply with the
terms and conditions  regarding sign criteria set forth in Exhibit "C" attached.
Lessee
                                        8
<PAGE>
will not make  alterations  or additions to the  landscaping  and will not place
signs which are visible from the outside of any buildings of the project without
prior  written  consent  of  Lessor.  Lessor  will  have  the  right in its sole
discretion to withhold its consent.  Any signs not in conformity with this Lease
may be removed by Lessor at Lessee's expense.

16.      Entry By Lessor

         16.01  Lessee  will  permit  Lessor  and  Lessor's  agents to enter the
Premises at all reasonable  times for the purpose of inspecting the same, or for
the purpose of maintaining  the Project,  or for the purpose of making  repairs,
alterations  or additions to any portion of the Project,  including the erection
and  maintenance  of such  scaffolding,  canopies,  fences  and  props as may be
required,  or for the  purpose  of  posting  notices  of  nonresponsibility  for
alterations, additions or repairs, or for the purpose of showing the Premises to
prospective  tenants  during the last six months of the Lease  Term,  or placing
upon the Project any usual or ordinary  "for sale" signs,  without any rebate of
rents and without any  liability to Lessee for any loss of  occupation  or quiet
enjoyment of the Premises thereby  occasioned.  Lessee will permit Lessor at any
time within sixty (6) days prior to the expiration of this Lease,  to place upon
the Premises any usual or ordinary "to let" or "to lease" signs. For each of the
above  purposes,  Lessor  will at all times  have and retain a key with which to
unlock  all of the doors in,  upon and about the  Premises,  excluding  Lessee's
vaults and safes.  Lessee will not alter any lock or install a new or additional
lock or any bolt on any door of the Premises  without the prior written  consent
of Lessor, which will not be unreasonably withheld. If Lessor gives its consent,
Lessee will  furnish  Lessor  with a key and Lessor  retains the right to charge
Lessee for restoring any altered doors to their  condition prior to installation
of the new or additional locks.

17.      Abandonment

         17.01 Lessee will not vacate or abandon the Premises at any time during
the Lease Term or permit the Premises to remain  unoccupied  for a period longer
than fifteen (15)  consecutive  days during the Lease Term. If Lessee  abandons,
vacates or surrenders  the Premises,  or is  dispossessed  by process of law, or
otherwise,  any  personal  property  belonging  to  Lessee  left in or about the
Premises  will, at the option of Lessor be deemed  abandoned and may be disposed
of by Lessor in the  manner  provided  for by the laws of the state in which the
Premises are located.

18.      Destruction

         18.01  Should the Premises or the building on the Premises be partially
destroyed by any cause not the fault of Lessee (or
                                        9
<PAGE>
any person in or about the Premises with the consent,  expressed or implied,  of
Lessee),  this Lease will  continue  in full  force and  effect and  Lessor,  at
Lessor's own cost and expense,  will promptly commence the work of repairing and
restoring the Premises to their prior  condition  providing that the work can be
accomplished  under all applicable  government laws and regulations within sixty
(60)  working days from the date of damage at a cost not  exceeding  twenty-five
percent (25%) of the total replacement cost of the Premises.  Within thirty (30)
days of the occurrence of partial  destruction,  Lessor may terminate this Lease
as of the date of the  occurrence if nine (9) months or less remain in the Lease
Term.

         18.02  Should the  Premises or the building in which the Premises are a
part be so far  destroyed by any cause not the fault of Lessee (or any person in
or about the Premises  with the consent,  expressed or implied,  of Lessee) that
they cannot be repaired or restored to their former  condition within sixty (60)
days of the date of damage or at a cost exceeding  twenty-five  percent (25%) of
the total  replacement  cost of the  Premises,  Lessor may at  Lessor's  options
either:

         A.  Continue  this  Lease in full  force and  effect by  repairing  and
restoring,  at Lessor's  own cost and  expense,  the  Premises  to their  former
condition; or

         B.  Terminate  this  Lease by  giving  Lessee  written  notice  of such
termination.

         18.03  Should the  Premises be  partially  or totally  destroyed by any
cause of  Lessee,  or any  person in or about  the  Premises  with the  consent,
expressed or implied of Lessee,  this Lease will remain in full force and effect
and Lessee shall  immediately  commence work to repair the damage and diligently
pursue its completion.

         18.04 Any insurance proceeds received by Lessor because of the total or
partial  destruction of the Premises or the building on the Premises will be the
sole  property  of Lessor,  free from any  claims of Lessee,  and may be used by
Lessor for whatever purposes Lessor may desire.

         18.05  Should  Lessor elect to repair and restore the Premises to their
former condition,  or should Lessor be required to restore the Premises to their
former condition,  there will be a proportional  abatement in the amount of rent
payable  during the period of repair and  restoration  as long as Lessee (or any
person in or about the  Premises  with the  consent,  expressed  or  implied  of
Lessee) is not the cause of the total or partial destruction. The rent due under
the terms of the Lease will be reduced  between the date of destruction  and the
date of  completion  of  restoration  and  repairs  based on the extent to which
destruction interferes
                                       10
<PAGE>
with Lessee's use of the Premises.

19.      Assignment, Subletting and Transfers of Ownership

         19.01  Lessee  will  not  directly  or  indirectly,  voluntarily  or by
operation  of law,  assign,  sell,  mortgage,  encumber,  convey,  or  otherwise
Transfer all or any part of Lessee's Leasehold estate, or permit the Premises to
be occupied by anyone  other than Lessee and  Lessee's  employees  or sublet the
Premises  or  any  portion  thereof  (collectively  called  "Transfer")  without
Lessor's prior written  consent.  If Lessee desires at any time to Transfer this
Lease,  Lessee shall first give written notice to Lessor of its desire to do so,
which notice shall contain (a) the identity of the proposed Transferee,  (b) the
terms and  provisions of the proposed  Transfer,  (c) the nature of the proposed
Transferee's  business to be carried on in the Premises,  (d) a detailed summary
of the business background and financial  condition of the proposed  Transferee,
and (e) such financial information as deemed necessary by Lessor to evaluate any
proposed Transfer.  All of the foregoing information shall be provided to Lessor
by Lessee at least  sixty  (60) days in advance of  Lessee's  proposed  Transfer
date.

         19.02 Lessor will not unreasonably withhold its consent to any proposed
Transfer  except that such consent need not be granted if; (a) in the reasonable
judgment of Lessor the  Transferee is of a character or is engaged in a business
which is not in keeping with the standards of the Lessor for the Project; (b) in
the reasonable  judgment of Lessor any purpose for which the Transferee  intends
to use the  Premises  is not in  keeping  with the  standards  of Lessor for the
Project;  provided in no event may any purpose for which  Transferee  intends to
use the Premises be in violation of this Lease;  (c) the portion of the Premises
subject  to the  Transfer  is not  regular in shape  with  appropriate  means of
entering  and  exiting,  including  adherence  to any  local,  county  or  other
governmental  codes,  or is not  otherwise  suitable  for  the  normal  purposes
associated  with such a Transfer;  (d) the  proposed  Transferee  be at least as
financially  responsible  as  Lessee  was  expected  to be at  the  time  of the
execution of this Lease or (e) Tenant is in default under this Lease.

         19.03 In the event  Lessor  consents  to a  Transfer,  Lessee  will pay
Lessor  the  excess,  if any,  of the rent and  other  charges  reserved  in the
Transfer over the allocable  portion of the rent and other charges hereunder for
that portion of the Premises  subject to the  Transfer.  For the purpose of this
section,  the rent  reserved in the Transfer  will be deemed to include any lump
sum  payment or other  consideration  given to Lessee in  consideration  for the
Transfer.  Lessee  will  pay or  cause  the  Transferee  to pay to  Lessor  this
additional rent together with the monthly installments of rent due.
                                       11
<PAGE>
         19.04 Any consent to any Transfer which may be given by Lessor,  or the
acceptance of any rent, charges or other  consideration by Lessor from Lessee or
any third party,  will not  constitute a waiver by Lessor of the  provisions  of
this  Lease or a  release  of  Lessee  from the  full  performance  by it or the
covenants  stated  herein;  and any consent given by Lessor to any Transfer will
not relieve Lessee (or any transferee of Lessee) from the above requirements for
obtaining the written consent of Lessor to any subsequent Transfer.

         19.05 If a default  under this Lease should occur while the Premises or
any part of the Premises are assigned, sublet or otherwise transferred,  Lessor,
in addition to any other remedies  provided for within this Lease or by law, may
at  its  option  collect   directly  from  the  Transferee  all  rent  or  other
consideration  becoming  due to Lessee under the Transfer and apply these monies
against any sums due to Lessor by Lessee;  and Lessee authorizes and directs any
Transferee to make payments of rent or other consideration direct to Lessor upon
receipt  of  notice  from  Lessor.  No  direct  collection  by  Lessor  from any
Transferee  should be construed to  constitute a notation or a release of Lessee
or any guarantor of Lessee from the further  performance  of its  obligations in
connection with this Lease.

         19.06 Any Transfer without the Lessor's consent shall e void and shall,
at the option of Lessor, terminate this Lease.

         19.07 If Lessee  requests  a consent  of Lessor to any  Transfer,  then
Lessee shall, upon demand, pay Lessor an administrative fee of One Hundred Fifty
Dollars  ($150.00) plus any  attorneys'  fees  reasonably  incurred by Lessor in
connection with such request.

20.      Breach by Lessee

         20.01  Lessee will be in breach of this Lease if at any time during the
term  of  this  Lease  (and  regardless  of  the  pendency  of  any  bankruptcy,
organization, receivership, insolvency or other proceedings in law, in equity or
before  any  administrative  tribunal  which  have or might  have the  effect of
preventing Lessee from complying with the terms of this Lease):

         A. Lessee  fails to make  payment of any  installment  of Base  Monthly
Rent,  Additional  Rent,  or of any other  sum  herein  specified  to be paid by
Lessee,  and such  failure is not cured  within  three (3) days  after  Lessor's
written  notice to Lessee of such  failure of payment,  which notice shall be in
lieu of and not in addition to any notice required by statute; or

         B.  Lessee  fails to  observe or  perform  any of its other  covenants,
agreements or  obligations  hereunder,  and such failure is not cured within ten
(10) days after Lessor's written notice
                                       12
<PAGE>
to Lessee of such failure,  which notice shall be in lieu of and not in addition
to any notice  required  by  statute  provided,  however,  that if the nature of
Lessee's  obligation  is such  that more  than ten (10)  days are  required  for
performance,  then Lessee will not be in breach if Lessee commences  performance
within such ten (10) day period and thereafter diligently prosecutes the same to
completion; or

         C.  Lessee  becomes  insolvent,  makes  a  transfer  in  fraud  of  its
creditors, makes a transfer for the benefit of its creditors,  voluntarily files
for bankruptcy,  is adjudged  bankrupt or insolvent in proceedings filed against
Lessee, a receiver,  trustee, or custodian is appointed for all or substantially
all of Lessee's  assets,  fails to pay its debts as they become due,  convenes a
meeting of all or a portion of its creditors, or performs any acts of bankruptcy
or insolvency, including the selling of its assets to pay creditors; or

         D. Lessee has abandoned the Premises as defined in paragraph 17 above.

21.      Remedies of Lessor

         21.01  Termination of Lease After Breach: If Lessee breaches this Lease
and  abandons  the  Premises  before  the end of the  term,  or if its  right to
possession  is terminated  by Lessor  because of Lessee's  breach of this Lease,
then this Lease may be terminated by Lessor at its option.  On such  termination
Lessor may recover from Lessee, in addition to the remedies permitted by law:

         A. The worth at the time of award of the  unpaid  rents  which had been
earned at the time of termination;

         B. The worth at the time of award of the  amount  by which  the  unpaid
rents  which would have been earned  after  termination  until the time of award
exceeds  the  amount of such  rental  loss that  Lessee  proves  could have been
reasonably avoided;

         C. The worth at the time of award of the  amount  by which  the  unpaid
rents for the  balance  of the Lease Term  after the time of award  exceeds  the
amount  of such  rental  loss  for  such  period  that  Lessee  proves  could be
reasonably avoided; and

         D. Any other amount  necessary to compensate  Lessor for all the damage
proximately  caused by Lessee's breach of its  obligations  under this Lease, or
which in the ordinary course of events would be likely to result therefrom.  The
damage proximately caused by Lessee's breach will include,  without  limitation,
(i) expenses for cleaning,  repairing or restoring  the Premises,  (ii) expenses
for altering,  remodeling or otherwise improving the Premises for the purpose of
reletting, (iii) broker's fees and commissions, advertising costs and other
                                       13
<PAGE>
expenses of reletting the Premises,  (iv) costs of carrying the Premises such as
taxes, insurance premiums,  utilities and security precautions,  (v) expenses in
retaking possession of the Premises, (vi) attorney's fees and court costs, (vii)
any unearned brokerage commissions paid in connection with this Lease and (viii)
reimbursement of any previously waived Base Rent or Additional Rent.

         21.02   Continuation  of  Lease  After  Breach:   Notwithstanding   the
foregoing,  in the event  Lessee  has  breached  this  Lease and  abandoned  the
Premises, this Lease, at Lessor's option, will continue in full force and effect
so long as  Lessor  does  not  terminate  Lessee's  right to  possession  of the
Premises,  and in such event  Lessor may enforce all of its rights and  remedies
under this Lease,  including  the right to recover  rent as it becomes  due. For
purposes  of this  Subparagraph  21.02,  the  following  acts by Lessor will not
constitute the termination of Lessee's right to possession of the Premises:

         A.  Acts of  maintenance  or  preservation  or  efforts  to  relet  the
Premises, including, but not limited to, alterations,  remodeling, redecorating,
repairs,  replacements and/or painting as Lessor shall consider advisable of the
purpose of reletting the Premises or any part thereof; or

         B. The  appointment  of a  receiver  upon the  initiative  of Lessor to
protect Lessor's interest under this Lease or in the Premises.

         21.03 In the event of  bankruptcy,  Lessee  assigns  to Lessor  all its
rights,  title and interest in the Premises as security for its  obligations and
covenants set forth in this Lease.

         21.04 Definitions and Incidental Rights:

         A. The  "worth  at the time of  award" of the  amounts  referred  to in
21.01A,  and 21.01B,  will be  computed by allowing  interest at the rate of ten
percent (10%) per annum. The "worth at the time of award" of the amount referred
to above in 21.01C will be computed by  discounting  the amount at the  discount
rate of the  Federal  Reserve  Bank of San  Francisco  in  effect at the time of
award, plus one percent (1%).

         B. Any  efforts  by Lessor to lessen  the  damages  caused by  Lessee's
breach of this Lease will not waive  Lessor's  right to recover  the damages set
forth above.

         C. Nothing herein will be construed to affect other  provisions of this
Lease  regarding  Lessor's  right to  indemnification  from Lessee for liability
arising prior to the termination of this Lease for personal injuries or property
damage.

         D. No right or remedy conferred upon or reserved to Lessor
                                       14
<PAGE>
in this Lease is intended to be exclusive  of any other right or remedy  granted
to Lessor by  statute  or common  law,  and each and every such right and remedy
will be cumulative.

22.      Surrender of Lease not Merger

         22.01 The  voluntary or other  surrender of this Lease by Lessee,  or a
mutual cancellation  thereof,  will not work a merger and will, at the option of
Lessor,  terminate  all or any  existing  transfers,  or may,  at the  option of
Lessor, operate as an assignment to it or any or all of such transfers.

23.      Attorneys Fees/Collection Charges

         23.01 In the  event of any  legal  action  or  proceeding  between  the
parties hereto,  actual  attorneys' fees and expenses of the prevailing party in
any such action or  proceeding  will be added to the  judgment  therein.  Should
Lessor be named as defendant in any suit brought  against  Lessee in  connection
with or arising out of Lessee's occupancy  hereunder,  Lessee will pay to Lessor
its costs and expenses incurred in such suit, including actual attorneys' fees.

         23.02 If Lessor  utilizes  the  services of any attorney at law for the
purpose of  collecting  any rent due and unpaid by Lessee  after three (3) days'
written notice for Lessee of such  nonpayment of rent or in connection  with any
other  breach  of this  Lease by  Lessee,  Lessee  agrees to pay  Lessor  actual
attorney's  fees as  determined by Lessor for such  services,  regardless of the
fact that no legal action may be commenced or filed by Lessor.

24.      Condemnation

         24.01 If twenty-five percent (25%) or more of the Premises is taken for
any public or quasi-public  purpose by any lawful government power or authority,
by exercise of the right of appropriation, reverse condemnation, condemnation or
eminent domain, or sold to prevent such taking,  the Lessee or the Lessor may at
its option  terminate this Lease as of the effective  date thereof.  Lessee will
not  because of such  taking  assert any claim  against the Lessor or the taking
authority  for any  compensation  because of such  taking,  and  Lessor  will be
entitled to receive the entire  amount of any award  without  deduction  for any
estate of  interest of Lessee.  If less than  twenty-five  percent  (25%) of the
Premises is taken, Lessor at its option may terminate this Lease. If Lessor does
not  so  elect,  Lessor  will  promptly  proceed  to  restore  the  Premises  to
substantially its same condition prior to such partial taking,  allowing for any
reasonable effects of such taking, and a proportionate allowance will be made to
Lessee for the rent  corresponding  to the time during which, and to the part of
the  Premises  which,   Lessee  is  deprived  on  account  of  such  taking  and
restoration.
                                       15
<PAGE>
25.      Rules and Regulations

         25.01  Lessee  will  faithfully  observe  and comply with the Rules and
Regulations  printed on or attached to this Lease and Lessor  reserves the right
to modify and amend them as it deems  necessary.  Lessor will not be responsible
to Lessee for the  nonperformance by any other lessee or occupant of the Project
of any of said Rules and Regulations.

         25.02  Violation  of any such Rules and  Regulations  shall be deemed a
material breach of this Lease by Lessee.

26.      Estoppel Certificate

         26.01 Lessee will  execute and deliver to Lessor,  within ten (10) days
of receiving  written notice, a statement in writing  certifying that this Lease
is unmodified and in full force and effect (or, if modified,  stating the nature
of such  modification)  and the date to which rent and other charges are paid in
advance,  if any, and acknowledging  that there are not, to Lessee's  knowledge,
any uncured defaults on the part of Lessor hereunder or specifying such defaults
if they are claimed.  Any such statement may be conclusively  relied upon by any
prospective  purchaser or  encumbrancer  of the  Premises.  Lessee's  failure to
deliver such statement within such time shall be conclusive upon Lessee that (1)
this Lease is in full force and effect,  without  modification  except as may be
represented  by  Lessor;   (2)  there  are  no  uncured   defaults  in  Lessor's
performance;  and (3) not more  than  one (1)  month's  rent  has  been  paid in
advance.

27.      Sale by Lessor

         27.01 In the event of a sale or conveyance by Lessor of the Project the
same  shall  operate  to  release  Lessor  from  any  liability  upon any of the
covenants  or  conditions,  express or  implied,  herein  contained  in favor of
Lessee,  and in such event Lessee agrees to look solely to the responsibility of
the successor in interest of Lessor in and to this Lease. This Lease will not be
affected  by any such sale,  and  Lessee  agrees to attorn to the  purchaser  or
assignee.

28.      Notices

         28.01 All notices, statements,  demands, requests, consents, approvals,
authorizations,  offers,  agreements,  appointments,  or designations under this
Lease by either  party to the other  will be in writing  and will be  considered
sufficiently  given and served upon the other party if sent by  certified  mail,
return receipt  requested,  postage prepaid,  and addressed as indicated in 1.03
and 1.04.

29.      Waiver
                                       16
<PAGE>
         29.01 The failure of Lessor to insist in any one or more cases upon the
strict performance of any term,  covenant or condition of this Lease will not be
construed as a waiver of a subsequent  breach of the same or any other covenant,
term or  condition;  nor shall any delay or  omission by Lessor to seek a remedy
for any  breach of this  Lease be deemed a waiver by Lessor of its  remedies  or
rights with respect to such a breach.

30.      Lessee's Intent, Holding Over

         30.01 Lessee will give Lessor, ninety (90) days prior to the expiration
of the Lease Term,  written  notification of Lessee's intent to either remain in
or vacate the Premises on the Lease  Expiration  Date. If Lessee does not notify
Lessor by the date  specified  herein,  Lessor deems that Lessee will vacate the
Premises  by  the  Lease  Expiration  Date  and  Lessor  will  have  no  further
obligation.

         30.02 Any holding over after the  expiration or termination of the term
of this Lease,  or after any notice given by Lessor to Lessee  terminating  this
Lease,  such possession by Lessee will be deemed to be a month-to-month  tenancy
terminable on thirty (30) day notice at any time by either party. All provisions
of this  Lease,  except  those  pertaining  to term and rent,  will apply to the
month-to-month  tenancy. Lessee will pay Base Monthly Rent in an amount equal to
150% of rent for the last full calendar month during the regular term.

31.      Project Plan

         31.01 In the event Lessor  requires the Premises for use in conjunction
with another  suite or for other  reasons  connected  with the Project  planning
program,  Lessor, upon notifying Lessee in writing, shall have the right to move
Lessee to space in the Project of which the Premises  forms a part,  at Lessor's
sole cost and expense  (excluding  private  telephone  systems which Lessee must
bear the cost of moving and  installing),  and the terms and  conditions  of the
original Lease will remain in full force and effect  excepting that the Premises
will now be in a new  location.  However,  if the new  space  does not meet with
Lessee's  approval,  Lessee will have the right to cancel this Lease upon giving
Lessor  thirty  (30) days'  notice  within ten (10) days of receipt of  Lessor's
notification.  Should  Lessee  elect to  cancel  the Lease as  provided  in this
paragraph,  the effective  expiration date will equal the projected move-in date
of the suite Lessor  wishes  Lessee to move to as indicated in Lessor's  written
notification to Lessee.

32.      Default of Lessor/Limitation of Liability

         32.01 In the event of any default by Lessor hereunder, Lessee agrees to
give notice of such default, by registered mail,
                                       17
<PAGE>
to Lessor at  Lessor's  Notice  Address as stated in 1.04 and to offer  Lessor a
reasonable opportunity to cure the default.

         32.02 In the event of any actual or alleged failure,  breach or default
hereunder by Lessor, Lessee's sole and exclusive remedy will be against Lessor's
interest in the  Project,  and no partner of Lessor will be sued,  be subject to
service of process,  or have a judgment  obtained against him in connection with
any alleged  breach or default,  and no writ of execution will be levied against
the  assets  of  any  partner  of  Lessor.  The  covenants  and  agreements  are
enforceable by Lessor and also by any partner of Lessor.

33.      Release of Partners of Lessor

         33.01 If Lessee has any claim  against  Lessor  under or arising out of
this Lease,  Lessee's  recourse shall be against the assets of Lessor and Lessee
further hereby waives any and all right to assert any claim  against,  or obtain
any damages  from the  partners,  employees,  officers,  directors  or agents of
Lessor.

34.      Expansion Clause

         34.01 If during the Lease  Term,  Lessee  executes  a lease  within the
Project for space  larger than the present  Premises  with a lease term at least
equal to that which remains on this Lease or one (1) year, whichever is greater,
with a Base  Monthly Rent amount at least equal to the present Base Monthly Rent
of this Lease,  this Lease shall be terminated upon the commencement date of the
Lease for such substitute space. Notwithstanding the above-stated,  Lessee shall
remain  obligated to pay for any adjustments in rent pursuant to Paragraph 3 and
4 due Lessor as a result of Lessee's tenancy hereunder and this obligation shall
survive the termination of this Lease pursuant to this Paragraph 34.

35.      Subordination

         35.01 Without the necessity of any  additional  document being executed
by Lessee for the purpose of affecting a  subordination,  and at the election of
Lessor or any  mortgagee  with a lien on the  Project or any ground  lessor with
respect to the Project,  this Lease will be subject and subordinate at all times
to (a) all ground leases or  underlying  leases which may now exist or hereafter
be executed  affecting the Project,  and (b) the lien of any mortgage or deed of
trust which may now exist or  hereafter  be executed in any amount for which the
Project,  ground leases or underlying  leases, or Lessor's interest or estate in
any of said items is specified  as security.  In the event that any ground lease
or underlying  lease  terminates for any reason or any mortgage or deed of trust
is  foreclosed or a conveyance  in lieu of  foreclosure  is made for any reason,
Lessee will,
                                       18
<PAGE>
notwithstanding  any  subordination,  attorn  to and  become  the  Lessee of the
successor  in interest to Lessor,  at the option of such  successor in interest.
Lessee covenants and agrees to execute and deliver, upon demand by Lessor and in
the form requested by Lessor any additional documents evidencing the priority or
subordination  of this Lease with respect to any such ground lease or underlying
leases  or the  lien  of any  such  mortgage  or deed of  trust.  Lessee  hereby
irrevocably  appoints Lessor as attorney-in-fact  of Lessee to execute,  deliver
and record any such document in the name and on behalf of Lessee.

36.      Miscellaneous Provisions

         36.01  Whenever  the  singular  number  is used in this  Lease and when
required by the  context,  the same will include the plural,  and the  masculine
gender will include the feminine and neuter genders,  and the word "person" will
include corporation,  firm, partnership,  or association.  If there be more than
one Lessee,  the obligations  imposed upon Lessee under this Lease will be joint
and several.

         36.02 The headings or titles to paragraphs of this Lease are not a part
of this Lease and will have no effect upon the construction or interpretation of
any part of this Lease.

         36.03 This  instrument  contains all of the  agreements  and conditions
made between the parties to this Lease and may not be modified  orally or in any
other  manner  than by an  agreement  in writing  signed by all  parties to this
Lease. Lessee acknowledges that neither Lessor nor Lessor's agents have made any
representation  or warranty as to the suitability of the Premises to the conduct
of  Lessee's  business.  Any  agreements,   warranties  or  representations  not
expressly  contained  herein  will in no way bind either  Lessor or Lessee,  and
Lessor  and  Lessee  expressly  waive all  claims  for  damages by reason of any
statement, representation, warranty, promise or agreement, if any, not contained
in this Lease.

         36.04 Time is of the essence of each term and provision of this Lease.

         36.05 Except as otherwise expressly stated, each payment required to be
made by Lessee is in addition to and not in  substitution  for other payments to
be made by Lessee.

         36.06 Subject to Paragraph  19, the terms and  provisions of this Lease
are  binding   upon  and  inure  to  the   benefit  of  the  heirs,   executors,
administrators, successors and assigns of Lessor and Lessee.

         36.07 All covenants and  agreements to be performed by Lessee under any
of the terms of this Lease will be performed by
                                       19
<PAGE>
Lessee at Lessee's sole cost and expense and without any abatement of rent.

         36.08 Any  provision  of this  Lease,  except for the payment of rents,
determined  to be invalid by a court of  competent  jurisdiction  will in no way
affect any other provision hereof.

         36.09 In consideration of Lessor's covenants and agreements  hereunder,
Lessee  hereby  covenants  and agrees not to disclose  any terms,  covenants  or
conditions of this Lease to any other party without the prior written consent of
Lessor.

37.      Deposit Agreement

         37.01  Lessor and Lessee  hereby  agree that Lessor will be entitled to
immediately  endorse and cash Lessee's good faith rent and the Security  Deposit
check(s)  accompanying this Lease. It is further agreed and understood that such
action will not guarantee  acceptance of this Lease by Lessor, but, in the event
Lessor  does not accept this Lease,  such  deposits  will be refunded in full to
Lessee. This Lease will be effective only after Lessee has received a copy fully
executed by Lessor.

38.      Governing Law

         38.01 This Lease is governed by and  construed in  accordance  with the
laws of the state in which the Premises are located,  and venue of any suit will
be in the county where the Premises are located.

39.      Severability

         39.01 If any provision of this Lease is found to be unenforceable,  all
other provisions shall remain in full force and effect.

40.      Landlord's Lien

         40.01 LESSOR  HEREUNDER WILL HAVE THE BENEFIT OF, AND THE RIGHT TO, ANY
AND ALL LANDLORD'S LIENS PROVIDED UNDER THE LAW BY WHICH THIS LEASE IS GOVERNED.

41.      Special Provisions

         41.01  Special  provisions  of this  Lease  number  42  through  44 are
attached  hereto  and made a part  hereof.  If none,  so state in the  following
space:
       -------------------------------------------------------------------------

         IN WITNESS  WHEREOF,  Lessor and Lessee have  executed this Lease as of
the day and year indicated by Lessor's execution date as written below.
                                       20
<PAGE>
         Individuals  signing  on behalf of  Lessee  warrant  that they have the
authority to bind their  principals.  In the event that Lessee is a corporation,
Lessee shall deliver to Lessor,  concurrently with the execution and delivery of
this  Lease,  a  certified  copy of  corporate  resolutions  adopted  by  Lessee
authorizing said corporation to enter into and perform the Lease and authorizing
the  execution  and  delivery of the Lease on behalf of the  corporation  by the
parties executing and delivering this Lease. THIS LEASE, WHETHER OR NOT EXECUTED
BY LESSEE,  IS SUBJECT TO  ACCEPTANCE  BY LESSOR,  ACTING ITSELF OR BY ITS AGENT
ACTING THROUGH ITS PRESIDENT AND VICE PRESIDENT AT ITS HOME OFFICE.

LESSOR

PS PARTNERS VI, LTD. A CALIFORNIA LIMITED PARTNERSHIP
- -----------------------------------------------------

By:      PS Commercial Properties Group, Inc. Agent for Owner


By       Lee Rippel
         -----------------
         Authorized Signature

         Lee Rippel
         -----------------
         Vice President Title

Date     5/9/95
         -----------------
         Execution Date


LESSEE

HOUSTON INTERNATIONAL, LLC., AN ARIZONA COMPANY

By       Todd Belfer
         -----------------
         Authorized Signature

         Todd Belfer
         -----------------
         Manager Title

Date     4/26/95
         -----------------
                                       21
<PAGE>
                                   EXHIBIT "B"

A.       AGREEMENT

A.1 Lessor and Lessee agree to the  construction of improvements in the Premises
according  to the terms and  conditions  of the Lease,  Exhibit  "A1",  and this
EXHIBIT "B".

A.2 Lessee  agrees to provide  Lessor with a fully  executed  Lease on or before
April 26, 1995.

A.3  Provided the A.2 deadline  date is adhered to,  Lessor will provide  Lessee
with final detailed plans and specifications of all proposed  improvements on or
before May 10, 1995.

A.4  Lessee  will  return  to  Lessor a copy of said  final  detailed  plans and
specifications  EXHIBIT  "A1"  approved  by Lessee on or  before  May 15,  1995,
subject to the provisions or paragraph D.1 DELAYS of this EXHIBIT "B".

A.5 Any changes required by Lessee to final plans and specifications  previously
approved  by both  Lessor and  Lessee,  shall be  approved by Lessor at its sole
discretion,  subject to the  provisions  of paragraph D.1 DELAYS of this EXHIBIT
"B".

A.6 Provided Lessee and Lessor perform according to the mentioned  provisions of
A.1 through A.5 and there are no Delays which are identified in provisions D.1 &
D.2 of this Exhibit,  Lessor shall complete all final proposed  improvements  to
the best of its ability on or before August 1, 1995.

B.       LESSEE PAID IMPROVEMENTS

B.1 Lessee at its sole cost and expense will pay for the following  improvements
to the Premises:

         Item                                                 Amount
         ----                                                 ------

1.       Any and all change orders                            
         -------------------------                            ------------------


C.       METHOD OF PAYMENT (deleted)

D.       DELAYS

D.1 Should Lessee not submit a fully  executed  Lease by the  indicated  date in
paragraph A.2 and approve final plans and  specifications  to lessor by the date
indicated  in paragraph  A.4 of this EXHIBIT "B",  Lessor will not be subject to
any  liability  and the  validity of this Lease will not be affected in any way.
However, Lessor also reserves the right, at its sole discretion,
                                        1
<PAGE>
to terminate this Lease.

D.2 The  commencement  of rent on the date  specified in paragraph  1.06 of this
Lease will not be  postponed  or waived  and  Lessor  will not be subject to any
liability if:

(1)      Lessee is the cause of any delay as identified  in  paragraphs  A.2 and
         A.4 and in construction. By way of example for construction,  including
         but not limited to: Lessee's  request for a delay;  the installation of
         Lessee's  trade  fixtures  and/or   equipment;   Lessee's  request  for
         additional  improvements  after  plans  and  specifications  have  been
         approved.
(ii)     Lessor is unable to complete all  improvements by the date indicated in
         A.6 of this EXHIBIT "B" due to circumstances beyond Lessor's reasonable
         control,  including but not limited to:  requirements  by any governing
         authority; shortage; strikes; material delivery delays; or acts of God.

E.       ADDITIONAL COSTS

E.1 Any changes  required by any governing  authority to Lessee  approved  final
plans and  specifications to conform to local,  state of federal laws will be at
the sole cost of  Lessee,  in  addition  to any  other  previously  agreed  upon
improvement  costs, if such changes are determined to be for the Lessees special
use and not part of the  general  requirements  of Lessor to lease  space at the
Project, in accordance with the provisions of paragraph E.3 of this EXHIBIT "B".

E.2 Should any  changes  to  previously  approved  plans and  specifications  be
required by Lessee:

(i)      the cost of such revised final plans and specifications shall be at the
         sole cost of Lessee;

(ii)     the  cost  of  any  changes  resulting  from  such  revised  plans  and
         specifications  shall be at the sole cost and  expense of  Lessee;  and
         such charges shall be subject to the provisions of paragraphs D and E.3
         of this EXHIBIT "B".

E.3 Any  additional  costs  including  costs of revised  construction  drawings,
incurred as a result of the changes  described in paragraphs E.1 and E.2 herein,
or if for any other  reason the actual  costs of  improvements  exceed  Lessor's
estimated  improvement costs, (a) such costs or expenses shall be paid by Lessee
to Lessor immediately upon receipt by Lessee of Lessor's itemized notice, or (b)
such costs or expenses  shall be amortized and included in the Base Monthly Rent
for the duration of the Lease Term.

F.       LESSOR'S PAID IMPROVEMENTS
                                        2
<PAGE>
F.1  Lessor  at its sole  cost  will  provide  the  following  improvements  per
Attachment "A" Bid Proposal, (see attached).

Lessor will give Lessee a Tenant  Improvement  Allowance not to exceed  $22,000.
This allowance may be used for architectural  fees, permit fees and all building
standard tenant  improvements,  i.e., carpet,  paint, walls, etc. If Lessee does
not require the full $22,000 the additional  monies shall remain the property of
Lessor with no reimbursement to tenant nor reduction in rent.
                                        3
<PAGE>
                                   EXHIBIT "C"
                                  SIGN CRITERIA
                                  UNIVERSITY I

These criteria have been  established for the purpose of assuring an outstanding
industrial  park for the mutual  benefit of all  tenants.  Conformance  shall be
strictly  enforced;  any installed  nonconforming  or unapproved  signs shall be
brought into conformance at the expense of the Lessee.

The Lessor shall administer and interpret the criteria.

A.       GENERAL REQUIREMENTS
         --------------------

         1.       Lessee  shall  submit or cause to be  submitted  to Lessor for
                  approval  before  fabrication  at least (2) copies of detailed
                  drawings covering the location, size, layout, design and color
                  of the proposed sign, including all lettering,  graphics, cans
                  and face colors.

         2.       All permits for signs and their installation shall be obtained
                  by the Lessee or his representative prior to installation.

         3.       Lessee  shall  be  responsible  for  the  fulfillment  of  all
                  requirements and specifications.

         4.       Lessee to have sign  displayed  no later  than one month  from
                  date of move in.

         5.       Lessee shall,  at it's own expense,  provide and maintain it's
                  own identification sign in accordance with specification noted
                  herein. If no identification is desired, Lessee is responsible
                  for blank plex in sign can. If Lessee fails to provide  either
                  signage or plex within the allotted time,  Lessor reserves the
                  right to install plea and charge back Lessee for plea cost.

B.       GENERAL SPECIFICATIONS
         ----------------------

         1.       Painted  lettering shall not be permitted except on plea faces
                  of can signs.

         2.       Flashing, moving, or audible signs shall not be permitted.

         3.       All electrical signs and their  installation  must comply with
                  all local buildings codes and electrical  does. All signs must
                  comply with the sign ordinances of the City of Temp.

         4.       No exposed conduit, tubing, J-Boxes or raceways shall
                                        1
<PAGE>
                  be permitted.

         5.       All cabinets,  conductors,  transformers  and other  equipment
                  shall be concealed.

C.       CONSTRUCTION REQUIREMENTS
         -------------------------

         1.       All signs facing the major  streets  (University  Dr. and 52nd
                  St.)  shall be of  standard  can type  sign  design  and shall
                  consist of box with plexiglass face and silkscreened  letters.
                  Exterior  surfaces of cans shall be painted yellow.  Sign face
                  shall be  Pantone  Cool Grey 3C and  letters  to be teal vinyl
                  (thin  blackout line is optional).  No other  material  colors
                  will be allowed.

         2.       All  cans  facing  the  major  streets  will be  comprised  of
                  illuminated and  non-illuminated  faces. Can construction will
                  be of a type so as to  prevent  light from  illuminated  areas
                  being  visible in the  nonilluminated  areas.  Lighting is the
                  responsibility of the Lessee.

         3.       All  signs  facing  other  than  major  streets  shall be non-
                  illuminated and of the same design as described in #1 above.

         4.       See attached drawings of can and signs and conform
                  accordingly.

         5.       Can sign sizes shall be a maximum of 1'6" X 10'0". Signs shall
                  be located as shown on the  enclosed  drawings.  All  exterior
                  signs,  bolts,  fastenings  and clips  shall be of hot  dipped
                  galvanized iron,  stainless steel,  aluminum,  brass or bronze
                  and no black iron materials of any type shall be permitted.

         6.       Location  of all  openings  for  conduit  and  sleeves  in the
                  building  walls shall be indicated by the sign  contractor  on
                  drawings   submitted  for  the  approval  of  Lessor  and  his
                  architect. The contractor shall install the same in accordance
                  with the approved drawings.

         7.       No label shall be permitted  on the exposed  surface of signs,
                  except  those  required  by local  ordinance,  which  shall be
                  applied in an inconspicuous location.

         8.       All penetrations of the building  structure  required for sign
                  installation shall be neatly sealed in a watertight condition.

         9.       Sign contractor shall repaid any damage to any work
                                        2
<PAGE>
                  caused by his work.

         10.      Lessee shall be fully  responsible  for the  operations of his
                  sign contractor.
                                        3
<PAGE>
                                   EXHIBIT "D"
                              RULES AND REGULATIONS


1.       SIGNS/WINDOWS.  All  tenant  (Lessee)  identification  signs  shall  be
         provided  at  the  expense  of  Lessee.   No  sign  placard,   picture,
         advertisement,  name or  notice  shall be  attached  to any part of the
         outside of any building and, if so placed,  Lessor shall have the right
         to remove  any such  sign,  placard,  picture,  advertisement,  name or
         notice at Lessee's expense.

         Lessee  shall not place nor allow  anything to be placed near the glass
         of any window,  door, partition or wall which may appear unsightly from
         outside the leased  premises,  nor conflict with the above.  Lessor may
         provide a standard  drape,  blind or window  covering that shall not be
         altered or removed by Lessee.

         Lessee is responsible to keep windows washed, inside and/or outside. No
         awning or shade shall be affixed or installed over or in the windows or
         the exterior of the premises.


2.       COMMON AREA/ROOF. The sidewalks, entrances and exits, hall passages and
         stairways,  if any,  shall not be  obstructed or used by Lessee for any
         purpose other than for ingress and egress.  The hall  passages,  exits,
         entrances,  stairways  and  roofs  are not  for the use of the  general
         public and Lessor  shall in all cases  retain the right to control  and
         prevent  access  thereto by all persons whose presence in the judgement
         of the Lessor shall be prejudicial to the safety, character, reputation
         and interest of the premises all tenants,  provided that nothing herein
         contained  shall be  construed  to prevent  such access to persons with
         whom Lessee normally deals in the ordinary course of Lessee's  business
         unless such persons are engaged in illegal  activities.  Neither Lessee
         nor  employees  or  invitees  of  Lessee  shall go upon the roof of any
         building.

3.       ADVERTISING.  Lessee  shall  not  use  the  name  of  the  building  in
         connection  with or in promoting  or  advertising  the business  Lessee
         except as to lessee's address.  Lessor shall have the right to prohibit
         the use of the name of the project or other  publicity for Lessee which
         in Lessor's  opinion  tends to impair the  reputation of the project or
         its  desirability  for the other Lessees.  Lessees will refrain from or
         discontinue such publicity upon notification by Lessor.

4.       LOCKS.  No additional locks or bolts shall be placed upon
                                        1
<PAGE>
         any of the doors or windows by Lessee, nor shall any changes be made in
         existing  locks  or the  mechanisms  thereof.  Lessee  must,  upon  the
         termination  of  Lessee's  tenancy,  return to Lessor  all keys  either
         furnished to or otherwise  procured by Lessee. In the event of the loss
         of any keys so furnished, Lessee shall pay to Lessor the costs thereof.

5.       SOLICITATIONS.  Lessee  shall  not  disturb,  solicit  or  canvass  any
         occupant of the project and shall cooperate to prevent the same.

6.       USE OF  PREMISES.  The leased  premises  shall not be used for lodging,
         sleeping  or cooking or for any  immoral or illegal  purpose or for any
         purpose that will damage the premises or the reputation  thereof or for
         any  purpose  other  than  that  specified  in the lease  covering  the
         premises.

7.       PARKING. The parking areas within the office park complex shall be used
         solely for the  parking of  passenger  vehicles  during  normal  office
         hours.  The  parking of trucks,  trailers,  recreational  vehicles  and
         campers is  specifically  prohibited.  No vehicles of any type shall be
         stored in the parking areas at any time. In the event that a vehicle is
         disabled,  it shall be removed within 48 hours.  There shall be no "For
         Sale" or other  advertising  signs on or about any parked vehicle.  All
         vehicles   shall  be  parked  in  the   designated   parking  areas  in
         conformation with all signs and other markings. No parking is permitted
         on public streets adjacent to the complex.

8.       NUISANCES. Lessee shall not use, keep or permit to be used or kept, any
         four or noxious gas or  substance  in the  premises or permit or suffer
         the  premises  to  be  occupied  or  used  in  a  manner  offensive  or
         objectional  to Lessor or other  occupants of the building by reason of
         noise,  odors  and/or  vibrations,  or  interfere in any way with other
         Lessees or those having business therein nor shall any animals or birds
         be brought in or kept in or about the premises of the  project.  Lessee
         shall  maintain  the  leased  premises  free from  mice,  bugs and ants
         attracted by food,  water or storage  materials.  Lessor is responsible
         for maintaining the outside area.

9.       DANGEROUS ARTICLES. Lessee shall not use or keep on the premises of the
         complex any kerosene,  gasoline or inflammable or combustible  fluid or
         material,  or any article  deemed  extra  hazardous  on account of fire
         (COPY MISSING FROM HERE TO END OF PARAGRAPH).

10.      IMPROPER  CONDUCT.  Lessor  reserves the right to exclude or expel from
         the  complex  any  person  who,  in the  judgement  of the  Lessor,  is
         intoxicated or under the influence of liquor
                                        2
<PAGE>
         or drugs or who  shall in any  manner  do any act in  violation  of the
         Rules and Regulations of said project.

11.      WIRING.  No  electric  wires,  or any other  electrical  apparatus,  or
         additional  electrical outlets,  shall be installed except with written
         request to and written approval from Lessor.  Any installation of above
         wiring shall be removed by Lessor at Lessee's expense.  lessor reserves
         the  right to  enter  upon  the  leased  premises  for the  purpose  of
         installing  additional  electrical  wiring and other  utilities for the
         benefit of the Lessee or adjoining tenants.

         Lessor  will  direct  electricians  as to where and how  telephone  and
         telegraph  wires are to be  introduced.  The location of telephone call
         boxes and other  equipment  affixed to the premises shall be subject to
         the approval of Lessor.

12.      AUCTION. No auction, public or private, will be permitted.

13.      EXTERIOR.  Lessee shall not place any  improvements  or moveable object
         including  antennas,  outside  furniture,  etc., in the parking  areas,
         landscaped  area or other areas outside of the leased  premises,  or on
         the roof of any building.

14.      SECURITY PRECAUTIONS. All entrance doors in the complex shall be closed
         and  securely  locked when the  premises  are not in use, and all doors
         opening  to public  corridors  shall be kept  closed  except for normal
         ingress and egress.  Lessee must  observe  strict care and caution that
         all water  faucets or any other  apparatus is shut off before Lessee or
         Lessee's  employees leave the premises and that all  electricity,  gas,
         etc.,  shall  likewise be carefully  shut off so as to prevent waste or
         damage.

15.      REST ROOM  FACILITIES.  The washrooms  and restrooms and  appurtenances
         thereto  shall not be used for any other use than  those for which they
         were  constructed.  No  sweepings,   rubbish,  rags  or  other  foreign
         substances  shall be thrown or placed  thereof.  No person  shall waste
         water  by  interfering  or  tampering  with  the  faucets.  Any  damage
         resulting in soiled  washrooms or restrooms or  appurtenances  shall be
         paid for by the Lessee  who, or whose  agents,  guests,  or  employees,
         shall cause such damage.

16.      DAMAGE.  Walls, floors and ceilings shall not be defaced in any way and
         no one  shall  be  permitted  to make,  nail,  screw  or  scratch  into
         surfaces,  paint  or in any  way mar the  building  surface.  Pictures,
         certificates,  licenses  and  similar  items  normally  used in  Lessee
         premises may be  carefully  attached to the walls by Lessee in a manner
         to be prescribed by the Lessor. Upon removal of such items by
                                        3
<PAGE>
         Lessee,  any damage to the walls or other surfaces shall be repaired by
         the Lessee.

17.      FURNITURE, SAFES/MOVING.  Furniture, freight, equipment, safes or other
         bulky  articles  shall be moved into or out of the complex  only in the
         manner  and at such  times as  Lessor  may  direct.  Lessor  shall  not
         overload the floor of the premises or in any way deface the premises or
         any part there.  Lessor  shall in all cases have the right to determine
         or limit the  weight,  size,  and  position  of safes  and other  heavy
         equipment.  Lessor  will not be  responsible  for loss or damage to any
         safe or other  property of Lessee by any cause.  All damage done to the
         building  or  complex by moving or  maintaining  any such safe or other
         property shall be repaired at the expense of Lessee.

18.      JANITORIAL  SERVICE.  Lessee shall not cause any  unnecessary  labor by
         reason of Lessee's carelessness or indifference in preservation of good
         order and  cleanliness.  Lessor shall not be  responsible to Lessee for
         any loss of property on the  premises,  however,  occurring  or for any
         damage  done to the  effect  of  Lessee  by the  janitor  or any  other
         employee or any other person.

19.      REQUIREMENTS OF LESSEE.  Employees of Lessor shall not perform any work
         or do anything  outside of their  regular  duties  unless under special
         instruction from Lessor.  Lessee shall give Lessor prompt notice of any
         defects in the  water,  sewage,  gas  plumbing,  electrical  lights and
         fixtures, heating apparatus, or any other service equipment.

20.      RULES AND REGULATIONS.  Rules may be modified,  amended or supplemented
         at any time by Lessor upon notice to Lessee.
                                        4
<PAGE>
42.      Hazardous Materials

         42.01  Compliance with Law
                -------------------

         Lessee, at Lessees expense,  shall comply with all laws, rules, orders,
ordinances,  directions,  regulations and requirements of federal, state, county
and  municipal  authorities  pertaining to Lessee's use of the premises and with
the recorded  covenants,  conditions and  restrictions,  regardless of when they
become effective,  including,  without limitation, all applicable federal, state
and local laws,  regulations or ordinances  pertaining to air and water quality,
Hazardous Materials (as hereinafter defined),  waste disposal, air emissions and
other environmental  matters, all zoning and other land use matters, and utility
availability, and with any direction of any public officer or officers, pursuant
to law,  which shall  impose any duty upon Lessor or Lessee with  respect to the
use or occupation of the Premise.

         42.02  Use of Hazardous Materials
                --------------------------

         (1) Lessee shall (1) not cause or permit any  Hazardous  Material to be
brought  upon,  kept or used in or about the  Premises or the Project by Lessee,
its agents, employees,  contractors or invitee without the prior written consent
of  Lessor,  which  Lessor  shall not  unreasonably  withhold  as long as Lessee
demonstrates to Lessor's reasonable satisfaction that such Hazardous Material is
necessary or useful to Lessee's  business and will be used,  kept and store in a
manner that complies with all laws  regulation  any such  Hazardous  Material so
brought upon or used or kept in or about the  Premises.  If Lessee  breaches the
obligations  stated in the preceding  sentence,  or if the presence of Hazardous
Materials on the Premises or the Project  caused or permitted by Lessee  results
in  contamination  of the Premises or the Project,  or if  contamination  of the
Premises or the Project by Hazardous Materials otherwise occurs for which Lessee
is legal  liable to Lessor for damage  resulting  therefrom,  then Lessee  shall
indemnify,  defend and hold Lessor harmless from any and all claims,  judgments,
damages,  penalties,  fines,  costs,  liabilities or losses (including,  without
limitation,  diminution in value of the Premise or the Project,  damages for the
loss or  restriction on use of rentable or usable space or of any amenity of the
Premises or the Project,  damages  airing from any adverse  impact on marking of
space, and sums paid in settlement of claims,  attorneys' fees,  consultant fees
and expert fees) which arise during or after the Lease terms as a result of such
contamination.  This  indemnification  of  Lessor by  Lessee  includes,  without
limitation,  costs  incurred  in  connection  with  any  investigation  of  site
conditions or any clean-up,  remedial,  removal or restoration  work required by
any federal, state or local governmental agency or political subdivision because
of Hazardous Material present in the soil or ground water on or
                                        1
<PAGE>
under the  Premises or the  Project.  Without  limiting  the  foregoing,  if the
presence  of any  Hazardous  Material on the  Premises or the project  caused or
permitted by Lessee results in any contamination of the Premises or the Project,
Lessee shall  promptly  take all actions at its sole expense as are necessary to
return the  Premises  and the  Project to the  condition  existing  prior to the
introduction  of any such  Hazardous  Material to the  Premises or the  Project;
provided that Lessor's  approval of such actions shall first be obtained,  which
approval  shall not be  unreasonably  withheld so long as such actions would not
potentially  have any material  adverse  long-term or  short-term  effect on the
Premises or the Project. The foregoing indemnity shall survive the expiration or
earlier termination of this Lease.

         (2)  Definition of "Hazardous Material"
              ----------------------------------

         As used herein,  the term  "Hazardous  Material" means any hazardous or
toxic  substance,  material  or waste,  including,  but not  limited  to,  those
substances,  materials,  and wastes  listed in the United  States  Department of
Transportation   Hazardous   Materials   Table  (49  CAR   172.101)  or  by  the
Environmental  Protection  Agency as hazardous  substances (40 CAR Part 302) and
amendments thereto, or such substances,  materials and wastes that are or become
regulated under any applicable local, state or federal law.

         (3)  Disclosure
              ----------

         At  the  commencement  of  this  Lease,  and  January  1 of  each  year
thereafter  (each such date being the year after the termination of this Lease),
Lessee  shall  disclose  to  Lessor  the  names  and  amounts  of all  Hazardous
Materials, or any combination thereof, which were stored, used or disposed of on
or about the Premises.

         (4)  Inspection
              ----------

         Lessor  and its  agents  shall  have the  right,  but not the duty,  to
inspect the Premises and the Project at any time to determine  whether Lessee is
complying with the terms of this Lease. If Lessee is not in compliance with this
Lease,  Lessor shall have the right to  immediately  enter upon the Premises and
the project to remedy any  contamination  caused by  Lessee's  failure to comply
notwithstanding  any other  provision  interference  with Lessee's  business but
shall not be liable for any interference caused thereby.

         (5)  Default
              -------

         Any default under this Paragraph shall be a material default - enabling
Lessor to exercise any of the remedies set forth in
                                        2
<PAGE>
this Lease.
                                        3
<PAGE>
                                  PROVISION 43
                            ATTORNEY'S FEES AND COSTS

In the event of any legal  action or  proceeding  between  the  parties  hereto,
actual attorneys fees and expenses of the prevailing party in any such action or
proceeding  will be added to the judgment  therein.  Should Lessor be named as a
defendant in any suit brought  against Lessee in connection  with or arising out
of  Lessee's  occupancy  hereunder,  Lessee  will pay to  Lessor  its  costs and
expenses  incurred in such suit,  including  actual  attorneys  fees.  If Lessor
utilizes the services of any attorney at law for the purpose of  collecting  any
rent due and unpaid by Lessee after three (3) days  written  notice to Lessee of
such  nonpayment of rent or in connection with any other breach of this Lease by
Lessee,  Lessee  agrees  to pay  Lessor  actual  attorneys  fees  and  costs  as
determined  by Lessor for such  services,  regardless  of the fact that no legal
action may be commenced or filed by Lessor.

All terms,  covenants and conditions in the Lease not  specifically  modified by
this  Amendment to Lease,  shall remain in full force and effect as if re-stated
in their entirety herein.
<PAGE>
                                  PROVISION 44

                                ADDENDUM TO LEASE

                                   USE CLAUSE
                                   ----------

Tenant has  negotiated  the use clause  contained in section 1.05 of this Lease.
Tenant  hereby  agrees  that  the Use  Clause  as so  written  is  deemed  to be
reasonable  for all purposes.  Tenant hereby further agrees that this Use Clause
is enforceable for all purposes and  specifically  waives all challenges to this
clause now and in the future.  The  purposes for which this Use Clause is deemed
to be reasonable and  enforceable  include,  but are not limited to, any and all
future  changes  tenant may request in the use of the Premises,  and any and all
circumstances relating to breach of Lease, and/or mitigation of damages,  and/or
assignment, and/or subletting.
<PAGE>
                              CORPORATE RESOLUTION
                              --------------------


WHEREAS,  it is deemed to be to the best interests of this Corporation,  HOUSTON
INTERNATIONAL, LLC, AN ARIZONA COMPANY and its shareholders:

NOW,  THEREFORE,  BE IT  RESOLVED,  that  the  officers  of the  Corporation  be
empowered to  negotiate a lease with PS PARTNERS VI, LTD., A CALIFORNIA  LIMITED
PARTNERSHIP  ("Lessor") for the space located at 1719 W.  UNIVERSITY #187 TEMPE,
AZ 85281 for a period of SIXTY (60) months  beginning  on August 1, 1995,  at an
anticipated monthly rental of 6937.28 including  stipulated  increases of 5% and
applicable  taxes upon all the terms and  conditions  of Lessor's  lease and any
agreed upon amendments and supplements attached thereto.

Executed at Maricopa  County,  State of Arizona,  City of Tempe this 27th day of
April, 1995.


         Manager
- ---------------------
         Title

(Todd Belfer)
- ---------------------


Place Corporate Seal Below:

                          MARKETING SERVICES AGREEMENT




         THIS   AGREEMENT   made  and  entered  into  by  and  between   HOUSTON
ENTERPRISES,  L.L.C , an Arizona limited  liability company  ("Principal"),  and
PURE SOURCE INTERNATIONAL LTD., a British Virgin Islands company ("Contractor").

R E C I T A L S :
- - - - - - - - - -

         A.  Principal  presently  conducts  the  business  of the  development,
manufacture,   processing,   warehousing  and  distribution  of   detoxification
products,  herbal teas and herbal capsules  (collectively,  "Detoxification  and
Herbal Products") in the State of Arizona and elsewhere.

         B.  Contractor  is  engaged in the  business  of  providing  consulting
services with respect to international  sales and distribution  matters, as well
as other international marketing services to businesses.

         C. Principal desires to utilize the services of Contractor with respect
to the development and expansion of its international  business operations,  and
Contractor  is  willing  to  provide  such  services  under  certain  terms  and
conditions.

         NOW, THEREFORE,  for good and valuable  consideration,  the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

A G R E E M E N T S :
- - - - - - - - - - - -

         1. Engagement.  Principal agrees to engage Contractor as an independent
contractor to provide  marketing,  promotion,  advertising and similar  services
with  respect to the sale of  Principal's  Detoxification  and  Herbal  Products
outside  of  the  United  States  of  America  and  otherwise  with  respect  to
Principal's  international business operations and Contractor accepts engagement
and agrees to faithfully perform such services, all in accordance with the terms
and conditions hereafter set forth.

         2. Project Ownership and Operation.  All projects shall be owned by and
operated in the name of Principal.

         3.  Duties of  Contractor.  Contractor's  services to  Principal  shall
consist of the following:

               (a)  Contractor  shall provide one or more  competent  executives
(the  "Executives")  to consult with  respect to the  marketing,  promotion  and
advertising aspects of Principal's international operations.


               (b)   Contractor shall assist in the development of
                                        1
<PAGE>
strategies,  procedures,  systems  and  controls  for the  purpose of  providing
effective  international  marketing,  promotion and  advertising  techniques and
functions for the benefit of Principal and Principal's international operations.

               (c)  Contractor  also  agrees to assist  Principal  in matters of
international  public  relations  and will  further the interest of Principal in
matters considered international customer relations.

               (d)  Contractor  shall  determine,  in its sole  discretion,  the
extent of time and services  necessary and/or  reasonably proper to maintain the
efficient  operation  of  Principal's   projects.   Contractor  may  enter  into
agreements  to  provide  similar  services  to persons  or  entities  other than
Principal,  provided, however, Contractor shall not disclose to any other person
or entity  confidential  information  acquired by Contractor  in performing  its
obligations  hereunder,  nor shall  Contractor  provide any such services to any
persons or  entities  which are  engaged  in the  business  of the  development,
manufacture,  processing,  warehousing and  distribution of  Detoxification  and
Herbal  Products,  unless it first  obtains  Principal's  written  consent  with
respect thereto.

         4. Duties of Principal. Principal shall perform as follows:

               (a) Unless the parties  otherwise agree in writing,  from time to
time, Principal shall provide all necessary operating staff and personnel at its
sole cost.

               (b)  Principal  shall  reimburse   Contractor  for  any  and  all
out-of-pocket costs or expenses which Contractor incurs or advances on behalf of
Principal,  to include,  but not necessarily be limited to, advertising expenses
advanced by Contractor.  Principal shall not,  however,  be obligated to pay for
any of Contractor's normal operational expenses, such as payroll, administrative
or other overhead expenses.

               (c) Principal  shall  cooperate with Contractor in all reasonable
respects and shall furnish Contractor all information  reasonably required by it
for the  performance of its services and shall permit  Contractor to examine and
copy any data in possession and control of Principal  affecting marketing and/or
its operations and shall in every reasonable way cooperate to enable  Contractor
to perform its services in a satisfactory manner.

         5.  Consideration.  The  consideration  payable to Contractor shal l be
equal to a total of Eight  Hundred  Fifty-Three  Thousand  Six  Hundred  Dollars
($853,600.00), payable as follows: 18, 1994.

               (a)   Five Hundred Thousand Dollars ($500,000.00) on May


               (b)  One  Hundred   Forty-Three   Thousand  Six  Hundred  Dollars
($143,600.00) on August 31, 1994.
                                        2
<PAGE>
               (c) One Hundred Fifty Thousand  Dollars  ($150,000.00) on October
31, 1994.

               (d) Sixty Thousand Dollars ($60,000.00) on December 21, 1994.

         6. Term.  The term of this  Agreement  shall commence on March 10, 1994
and end on December 31, 1995.

         7. Independent Contractor Status.

               (a) Contractor is retained by Principal only for the purposes and
to the extent  set forth in this  Agreement,  and  Contractors  relationship  to
Principal during the period or periods of service hereunder is solely that of an
independent  contractor.  Contractor  and its employees  shall not be considered
under the provisions of this Agreement or otherwise as having an employee status
or being entitled to participate in any plans,  arrangements or distributions by
Principal  pertaining to or in connection with any pension,  stock bonus, profit
sharing,  or similar benefits for Principal's  regular  employees.  In addition,
Contractor  shall  have  no  authority  to  bind  Principal  by any  promise  or
representation, unless specifically authorized in writing to do so.

               (b)  Contractor  shall  be  responsible  for the  payment  of all
unemployment  taxes and  costs,  federal  and  state  taxes,  together  with any
penalties and interest  thereon,  as well as social security  contributions  and
workmen's  compensation and insurance  costs,  which may be due and payable with
respect to the amounts received by Contractor hereunder.

               (c) Contractor  shall not be liable to Principal for any expenses
incurred by Principal in performing its duties and  obligations  hereunder,  nor
shall  Contractor  be liable  to  Principal  for any  office  overhead  or other
overhead  expenses  which  may be  incurred  by  Principal  as a result  of this
Agreement.

               (d) Principal and  Contractor  shall not be deemed to be partners
or joint venturers in any respect whatsoever.  Principal and its employees shall
not be considered  under the  provisions of this Agreement or otherwise as being
entitled  to  participate  in  any  plans,   arrangements  or  distributions  by
Contractor pertaining to or in connection with any pension,  stock bonus, profit
sharing,  or similar benefits for Contractor's  regular employees.  In addition,
Principal  shall  have  no  authority  to  bind  Contractor  by any  promise  or
representation, unless specifically authorized in writing to do so.

               (e)  Except to the  extent  specifically  provided  herein to the
contrary,  Principal shall not be liable to Contractor for any expenses incurred
by Contractor  in performing  its duties and  obligations  hereunder,  nor shall
Principal  be liable to  Contractor  for any office  overhead or other  overhead
expenses which may be incurred by Contractor as a result of this Agreement.

         8. Warranties. Each party represents, warrants and
                                        3
<PAGE>
covenants to the other as follows:

               (a)  It  will  comply  with  all  applicable  laws,   ordinances,
statutes,   and  governmental  rules  and  regulations,   with  respect  to  the
performance of its obligations hereunder.

               (b) Its duties to be performed  and its business will be run with
integrity and honesty so as to not adversely affect the reputation, goodwill and
name of the other.

               (c) It has the full right and legal  authority  to enter into and
fully perform this Agreement in accordance with its terms.

               (d)  This   Agreement,   when   executed  and  delivered  by  its
undersigned   officers,   will  be  its  legal,  valid  and  binding  obligation
enforceable  against it in accordance with its terms,  except to the extent that
enforcement thereof may be limited by bankruptcy,  insolvency,  or other similar
laws affecting creditors' rights generally.

               (e) The  execution  and delivery of this  Agreement has been duly
authorized  by it and such  execution  and the  performance  of its  obligations
hereunder do not and will not violate or cause a breach of any other  agreements
or obligations to which it is a party or by which it is bound.

         9. Hiring of  Personnel.  Principal  shall not employ or seek to employ
any person who is at the time employed by Contractor without first obtaining the
written consent of Contractor.

         10. Notices.  All notices  required or permitted  hereunder shall be in
writing  and  shall be deemed  duly  given  upon  receipt  if either  personally
delivered or sent by certified mail, return receipt requested,  addressed to the
parties as follows:

               If to Principal:
               ----------------
               Todd P. Belfer
               Hooman Nikzad
               HOUSTON ENTERPRISES, L.L.C.
               3658 East Chipman Road
               Phoenix, AZ 85040

               If to Contractor:
               -----------------
               Todd P. Belfer
               Investment Advisor
               PURE SOURCE INTERNATIONAL LTD.
               Abbott Building, 2nd Floor
               Road Town, Tortola
               British Virgin Islands

or to such other  address  as the person to whom  notice is to be given may have
previously furnished to the other in writing in the manner set forth above.

         11.  Further  Assurances.  Each party hereto agrees that,  from time to
time  hereafter,  and  upon  request,  it shall  without  undue  delay  execute,
acknowledge and deliver such other documents as
                                        4
<PAGE>
reasonably may be required by any other party hereto, and perform any reasonable
action which may become  necessary,  to more effectively carry out the terms and
conditions of this Agreement.

         12. Entire Agreement:  Amendments.  This Agreement  contains the entire
understanding  of the parties with respect to its subject  matter and supercedes
all prior and  contemporaneous  agreements  and  understandings,  inducements or
conditions, express or implied, oral or written, except as herein contained. The
express  terms hereof  control and supersede  any course of  performance  and/or
usage of the trade inconsistent with any of the terms hereof. This Agreement may
not be modified or amended other than by an agreement in writing  executed by an
authorized officer of each party.

         13. Construction.  The language in all parts of this Agreement shall in
all cases be construed as a whole according to its fair meaning and not strictly
for nor against any party.  The paragraph  headings  contained in this Agreement
are for  reference  purposes  only and will not affect in any way the meaning or
interpretation  of this Agreement.  All terms used in one number or gender shall
be  construed  to include any other number or gender as the context may require.
The parties  agree that each party has reviewed  this  Agreement and has had the
opportunity to have counsel review the same and that any rule of construction to
the effect that  ambiguities are to be resolved against the drafting party shall
not  apply in the  interpretation  of this  Agreement  or any  amendment  or any
exhibits thereof.

         14. Binding  Agreement.  This Agreement shall be binding upon and inure
to the  benefit  of the  parties  hereto  and their  respective  successors  and
assigns,  except that no party may assign or transfer its rights or  obligations
under this Agreement without the prior written consent of an authorized  officer
of the other party.

         15.  Enforcement.  In the event of any default on the part of any party
hereto, this Agreement may be enforced by an action for specific  performance or
other  appropriate  remedy  authorized  under  applicable  law. Should any party
breach any of the terms and conditions of this Agreement, or any other documents
executed  in  connection  herewith,  necessitating  the filing of a lawsuit  for
damages,  specific  performance or any other remedy allowed under applicable law
then, and in that event,  the prevailing party in such lawsuit shall be entitled
to reasonable attorneys' fees that shall be determined by the court.

         16.  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  each of which  shall be deemed an  original  as against any party
whose signature appears thereon,  and all of which shall together constitute one
and the same  instrument.  This Agreement  shall become binding when one or more
counterparts hereof,  individually or taken together,  shall bear the signatures
of all the parties reflected hereon as the signatories.

         17. Severability.  In the event any term or provision of this Agreement
is declared by a court of  competent  jurisdiction  to be invalid or illegal for
any reason, this Agreement shall remain in
                                        5
<PAGE>
full force and effect,  and the same shall be  interpreted as if such invalid or
illegal provision were not a part hereof.

         18.  Indulgences.  Neither the failure nor the delay on the part of any
party to exercise any right,  remedy,  power or privilege  under this  Agreement
shall operate as a waiver thereof,  nor shall any single or partial  exercise of
any right,  remedy,  power or privilege preclude any other or future exercise of
the same or of any other right, remedy, power or privilege, nor shall any waiver
of any right,  remedy,  power or  privilege  with respect to any  occurrence  be
construed as a waiver of such right,  remedy, power or privilege with respect to
any other  occurrence.  No waiver shall be effective unless it is in writing and
is signed by the party asserted to have granted such waiver.

         IN WITNESS WHEREOF, the parties have executed this written Agreement on
the ____________  day of March,  1996, to confirm their oral agreement which was
effective the 10th day of March, 1994.

PRINCIPAL:                                       CONTRACTOR:

HOUSTON ENTERPRISES, L.L.C.,                     PURE SOURCE INTERNATIONAL
an Arizona limited liability                     LTD., a British Virgin
company                                          Islands company

By  Todd P. Belfer                               By
    ------------------------                         -------------------------
    Todd P. Belfer, Manager                          Todd P. Belfer
                                                     Investment Advisor
By
    ------------------------
    Hooman Nikzad, Manager
                                        6

                             DIRECTORS and OFFICERS
                            INDEMNIFICATION AGREEMENT


         This Indemnification  Agreement (the "Agreement") is entered into as of
July ___, 1996, between M.D. Labs, Inc., a Delaware corporation (the "Company"),
and Todd P. Belfer ("Indemnitee").


                                    RECITALS

                  A. It is  essential  to the  Company to retain and  attract as
directors and officers the most capable persons available;

                  B. Indemnitee is a director and/or officer of the Company;

                  C. Both the Company and  Indemnitee  recognize  the  increased
risk of  litigation  and other  claims  being  asserted  against  directors  and
officers of public companies in today's environment;

                  D. The  Amended  and  Restated  Certificate  of  Incorporation
("Certificate  of  Incorporation")  of  the  Company  requires  the  Company  to
indemnify  and advance  expenses to its  directors  and  officers to the fullest
extent  permitted by law and  Indemnitee has been serving and continues to serve
as a director or officer of the Company in part in reliance on such  Certificate
of Incorporation; and

                  E.  In  recognition  of  Indemnitee's   need  for  substantial
protection against personal liability in order to enhance Indemnitee's continued
service to the Company in an effective manner and  Indemnitee's  reliance on the
Certificate of  Incorporation,  and in part to provide  Indemnitee with specific
contractual  assurance  that  the  protection  promised  by the  Certificate  of
Incorporation  will be  available  to  Indemnitee  (regardless  of,  among other
things,  any amendment to or revocation of such or any change in the composition
of the Company's Board of Directors or acquisition  transaction  relating to the
Company),   the   Company   wishes  to  provide  in  this   Agreement   for  the
indemnification  of, and the advancing of expenses to, Indemnitee to the fullest
extent (whether  partial or complete)  permitted by law and as set forth in this
Agreement,  and,  to the  extent  insurance  is  maintained,  for the  continued
coverage of Indemnitee  under the Company's  directors' and officers'  liability
insurance policies.

                                    COVENANTS

         In consideration of Indemnitee continuing to serve the Company directly
or, at its request,  with another enterprise,  and intending to be legally bound
hereby, and for other good and valuable consideration,  the adequacy of which is
hereby acknowledged, the parties agree as follows:
                                     <PAGE>
Indemnification Agreement                                               Page - 2



         1.       Certain Definitions:

         (a)      Action: any threatened,  pending or completed action,  suit or
                  proceeding, or any inquiry or investigation, whether conducted
                  by the Company or any other  party,  that  Indemnitee  in good
                  faith  believes  might  lead to the  institution  of any  such
                  action,   suit  or  proceeding,   whether   civil,   criminal,
                  administrative, investigative or other.

         (b)      Change in Control: shall be deemed to have occurred if (i) any
                  "person" (as such ----------------- term is used in Paragraphs
                  13(d) and 14(d) of the  Securities  Exchange  Act of 1934,  as
                  amended [the "Exchange  Act"]),  other than a trustee or other
                  fiduciary holding securities under an employee benefit plan of
                  the Company or a corporation  owned  directly or indirectly by
                  the  stockholders  of the  Company in  substantially  the same
                  proportions as their ownership of stock of the Company,  is or
                  becomes the "beneficial owner" (as defined in Rule 13d-3 under
                  said  Act),  directly  or  indirectly,  of  securities  of the
                  Company  representing  one-third  or more of the total  voting
                  power  represented  by the Company's then  outstanding  Voting
                  Securities  (as defined  below),  or (ii) during any period of
                  two  consecutive  years,  individuals  who at the beginning of
                  such period  constitute  the Board of Directors of the Company
                  and any new director  whose election by the Board of Directors
                  or nomination for election by the Company's  stockholders  was
                  approved  by a  vote  of at  least  two-thirds  (2/3)  of  the
                  directors  then still in office who either were  directors  at
                  the  beginning of the period or whose  election or  nomination
                  for election was previously so approved,  cease for any reason
                  to constitute a majority thereof, or (iii) the stockholders of
                  the Company approve a merger or  consolidation  of the Company
                  with  any   other   corporation,   other   than  a  merger  or
                  consolidation  which would result in the Voting  Securities of
                  the Company  outstanding  immediately prior thereto continuing
                  to  represent  (either by  remaining  outstanding  or by being
                  converted into Voting  Securities of the surviving  entity) at
                  least two-thirds of the total voting power  represented by the
                  Voting  Securities  of the  Company or such  surviving  entity
                  outstanding immediately after such merger or consolidation, or
                  the  stockholders  of the  Company  approve a plan of complete
                  liquidation  of the  Company or an  agreement  for the sale or
                  disposition by the Company of (in one  transaction or a series
                  of  transactions)  all  or  substantially  all  the  Company's
                  assets.

         (c)      Derivative  Action:  an  Action  by or in  the  right  of  the
                  Company.

         (d)      Expenses:  include  reasonable  attorneys'  fees, court costs,
                  deposition  costs,  court reporter fees,  travel and all other
                  costs,  expenses and  obligations  actually paid to another or
                  incurred in connection with investigating the facts underlying
                  the
<PAGE>
Indemnification Agreement                                               Page - 3



                  Action,  preparing  to  defend  and  defending  the  Action or
                  preparing for and participating in the Action as a witness, or
                  any of the foregoing expenses incurred on appeal, or any other
                  reasonable expenses incurred by Indemnitee in participating in
                  any Indemnifiable Action or Indemnifiable Derivative Action.

         (e)      Indemnifiable  Action or Indemnifiable  Derivative Action: any
                  Action  or  Derivative  Action  arising  out  of or  relating,
                  directly or indirectly,  to the fact that Indemnitee is or was
                  a Director,  Indemnitee,  employee,  agent or fiduciary of the
                  Company,  or a subsidiary of the Company, or is or was serving
                  at the  request  of the  Company  as a  Director,  Indemnitee,
                  employee,  trustee, agent or fiduciary of another corporation,
                  partnership,  joint venture,  employee  benefit plan, trust or
                  other  enterprise,  or by reason of  Indemnitee's  actions  or
                  omissions in any such capacity.

         (f)      Potential Change in Control:  shall be deemed to have occurred
                  if (i) the Company enters into an agreement,  the consummation
                  of  which  would  result  in the  occurrence  of a  Change  in
                  Control;  (ii) any person  (including  the  Company)  publicly
                  announces an intention to take or to consider  taking  actions
                  which if  consummated  would  constitute  a Change in Control;
                  (iii)  any  person  other  than a trustee  or other  fiduciary
                  holding  securities  under  an  employee  benefit  plan of the
                  Company or a corporation owned, directly or indirectly, by the
                  stockholders  of  the  Company  in   substantially   the  same
                  proportions as their  ownership of stock of the Company who is
                  or becomes the beneficial  owner,  directly or indirectly,  of
                  securities  of the  Company  representing  10% or  more of the
                  combined voting power of the Company's then outstanding Voting
                  Securities,  increases such person's  beneficial  ownership of
                  such  securities by five  percentage  points (5%) or more over
                  the  percentage so owned by such person;  or (iv) the Board of
                  Directors adopts a resolution to the effect that, for purposes
                  of this Agreement, a Potential Change in Control has occurred.

         (g)      Voting  Securities:  any  securities of the Company which vote
                  generally in the election of directors.

         2.  No  Pending  Actions.  Indemnitee  represents  to  Company  that to
Indemnitee's  actual  knowledge,   (i)  there  is  no  Indemnifiable  Action  or
Indemnifiable  Derivative  Action  involving  Indemnitee  as of the date of this
Agreement  and (ii) no facts  exist  that may  form the  basis  for such  Action
involving Indemnitee.

         3.  Indemnification  For  Actions  Other Than  Derivative  Actions.  If
Indemnitee was, is, or becomes a party to or a witness or other  participant in,
or is  threatened to be made a party to or witness or other  participant  in, an
Indemnifiable Action other than an Indemnifiable
<PAGE>
Indemnification Agreement                                               Page - 4



Derivative  Action,  the  Company  shall,  subject  to the  provisions  of  this
Agreement,  indemnify  Indemnitee to the fullest extent permitted by law against
any  and  all  Expenses,  judgments,  fines,  penalties,  and  amounts  paid  in
settlement of such Action.

         4.       Indemnification For Derivative Actions.

                  (a) Basic Indemnification. If Indemnitee was, is, or becomes a
party to or a witness or other  participant  in, or is  threatened  to be made a
party to or witness or other participant in an Indemnifiable  Derivative Action,
the  Company  shall,  subject to the  provisions  of this  Agreement,  indemnify
Indemnitee to the fullest extent  permitted by law against any and all Expenses,
but not  judgments,  fines,  or,  except as set  forth  below,  amounts  paid in
settlement of such Derivative Action.

                  (b)   Adjudication   of  Liability  in   Derivative   Actions.
Notwithstanding  Paragraph 4(a), no indemnification  shall be made in respect of
any claim,  issue, or matter as to which Indemnitee shall have been adjudged (by
final judicial  determination from which there is no further right to appeal) to
be liable to the  Company  unless and only to the extent that the court in which
such  Derivative   Action  was  brought  shall  determine  upon  application  by
Indemnitee  that  despite  the  adjudication  of  liability  and in  view of all
circumstances  of the case,  such  person is fairly and  reasonably  entitled to
indemnification which such court shall deem proper.

                  (c)   Settlement   of  Derivative   Actions.   Notwithstanding
Paragraph  4(a),  the court in which  such  Derivative  Action was  brought  may
determine upon application of Indemnitee  that, in view of all  circumstances of
the case,  indemnity  for  amounts  paid in  settlement  is proper and may order
indemnity  for the amounts so paid in settlement  and for the Expenses  actually
and reasonably paid in connection with such application, to the extent the court
deems proper.

         5. Limits on  Indemnification.  Except as stated in  Paragraph 6, there
shall be no indemnification pursuant to this Agreement:

                  (a) to the extent that  payment for the same claims or amounts
are actually made to Indemnitee under a valid and collectible  insurance policy;
provided,  however,  that if it  should  subsequently  be  determined  that  the
Indemnitee is not legally  entitled to retain any such payment,  the restriction
on indemnification pursuant to this subparagraph (a) shall no longer apply;

                  (b) to the extent that Indemnitee is indemnified or receives a
recovery  for the  same  claims  or  amounts  otherwise  than  pursuant  to this
Agreement;  provided, however, that if it should subsequently be determined that
Indemnitee is not legally entitled to retain any such
<PAGE>
Indemnification Agreement                                               Page - 5



recovery,  the restriction on indemnification  pursuant to this subparagraph (b)
shall no longer apply;

                  (c) on  account of any  violation  of  Paragraph  l6(b) of the
Exchange Act of l934, as amended, and rules promulgated thereunder;

                  (d) on  account of any  violation  of  Paragraph  l0(b) of the
Exchange Act of l934,  and any rules  promulgated  thereunder,  or similar state
law, to the extent that such violation is based on (i) the purchase or sale of a
security by Indemnitee or a person  affiliated with Indemnitee  while Indemnitee
is in possession of material nonpublic information about the Company, or (b) the
communication of material nonpublic  information about the Company in connection
with any  transaction  on or through  the  facilities  of a national  securities
exchange  or from  or  through  a  broker  or  dealer,  other  than as part of a
securities offering by the Company;

                  (e) with  respect to any  transaction  from  which  Indemnitee
derived an improper personal benefit to which he or she is not legally entitled;

                  (f) for the return of any remuneration paid to Indemnitee that
is held by any court in a final judgment to have been illegal or improper;

                  (g) to the extent that  Indemnitee's  action (or omission) was
done (or not done)  (i) not in good  faith,  or (ii) not in a manner  Indemnitee
believed  reasonably  to be in or not  opposed  to  the  best  interests  of the
Company,  or (iii) with respect to any criminal Action, with reasonable cause to
believe Indemnitee's conduct was unlawful; or

                  (h)  if a  final  nonappealable  decision  by a  court  having
jurisdiction  in the matter shall  determine  that such  indemnification  is not
lawful.

         6. Partial and Mandatory Indemnity. If Indemnitee is entitled under any
provision  of this  Agreement  to  indemnification  by the  Company of some or a
portion  of the  Expenses,  judgments,  fines,  penalties  and  amounts  paid in
settlement  of an  Action  but not for  the  total  amount,  the  Company  shall
indemnify  Indemnitee  for the portion to which  Indemnitee is entitled.  To the
extent that Indemnitee has been successful on the merits or otherwise (including
dismissal with or without  prejudice) in defense of any Indemnifiable  Action or
Indemnifiable  Derivative  Action,  or in defense of any claim,  issue or matter
therein,   Indemnitee  shall  be  indemnified   against  Expenses  actually  and
reasonably incurred by Indemnitee in connection  therewith,  except as stated in
Subparagraph 5(a) or 5(b).

         7.  Notification of Indemnifiable  Action or  Indemnifiable  Derivative
Action. Indemnitee shall promptly notify the Company of any Indemnifiable Action
or Indemnifiable
<PAGE>
Indemnification Agreement                                               Page - 6



Derivative  Action  promptly  after  receipt  by  Indemnitee  of  notice  of the
commencement of such  Indemnifiable  Action or Derivative  Action.  With respect
thereto:

                  (a) The Company will be entitled to participate therein at its
own expense.

                  (b) Except as otherwise provided below, the Company may assume
jointly the defense  thereof  with any other  indemnifying  party,  with counsel
reasonably  satisfactory  to Indemnitee to be chosen or approved by the Company.
After  notice from the Company to  Indemnitee  of its  election to so assume the
defense  thereof,  the Company will not be liable to Indemnitee for any legal or
other  expenses  subsequently  incurred by  Indemnitee  in  connection  with the
defense thereof other than reasonable costs of investigation or participation in
any Action or  Derivative  Action  (including  travel  expenses) or as otherwise
provided below. Indemnitee shall have the right to employ independent counsel in
such Action or Derivative Action; however, the fees and expenses of such counsel
incurred after notice from the Company of its assumption of the defense  thereof
shall be at the expense of Indemnitee unless:

                           (i)  the   employment  of   independent   counsel  by
         Indemnitee has been authorized by the Company;

                           (ii)  counsel  employed by the  Company to  represent
         Indemnitee shall have reasonably concluded that there may be a conflict
         of interest in the conduct of the defense of such action that  prevents
         such counsel from representing Indemnitee; or

                           (iii) the  Company  shall  not in fact have  employed
         counsel to assume the  defense of such Action or  Derivative  Action on
         behalf of Indemnitee.

The fees and expenses of independent  counsel of Indemnitee incurred pursuant to
the provisions of  Subparagraphs  7(b)(i),  (ii) and (iii) shall be borne by the
Company.

                  (c) If the  Company  has  assumed  the  defense of  Indemnitee
pursuant to Subparagraph (b) above:

                           (i) the  Company  shall not be  liable  to  indemnify
         Indemnitee  under this  Agreement  for any amount paid in settlement of
         any Action or Derivative Action effected without its written consent;

                           (ii) the  Company  shall  not  settle  any  Action or
         Derivative  Action in any manner  which  would  impose  any  penalty or
         limitation on Indemnitee without Indemnitee's written consent; and
<PAGE>
Indemnification Agreement                                               Page - 7



                           (iii)  neither  the  Company  nor   Indemnitee   will
         unreasonably withhold their consent to any proposed settlement.

         8.  Establishment  of  Trust.  In the  event of a  Potential  Change in
Control,  the Company shall, upon written request by Indemnitee,  create a trust
for the  benefit of  Indemnitee  and from time to time upon  written  request of
Indemnitee shall fund such trust in an amount  sufficient to satisfy any and all
Expenses reasonably  anticipated at the time of each such request to be incurred
in connection with investigating,  preparing for and defending any Indemnifiable
Action or Indemnifiable  Derivative  Action,  and any and all judgments,  fines,
penalties  and  settlement  amounts  of any and  all  Indemnifiable  Actions  or
Indemnifiable  Derivative  Action  from time to time  actually  paid or claimed,
reasonably  anticipated or proposed to be paid;  provided,  however,  that in no
event shall more than  $100,000 be required to be deposited in any trust created
hereunder in excess of amounts  deposited in respect of  reasonably  anticipated
Expenses. The terms of the trust shall provide that upon a Change in Control (i)
the trust  shall not be revoked or the  principal  thereof  invaded  without the
written consent of Indemnitee,  (ii) the trustee shall advance,  within ten (10)
business  days of a written  request  by  Indemnitee,  any and all  Expenses  to
Indemnitee  (and  Indemnitee  hereby  agrees to  reimburse  the trust  under the
circumstances  under which Indemnitee would be required to reimburse the Company
under  Paragraph 9(b) of this  Agreement),  (iii) the trust shall continue to be
funded by the Company in accordance with the funding obligation set forth above,
(iv) the  trustee  shall  promptly  pay to  Indemnitee  all  amounts  for  which
Indemnitee  shall be entitled to  indemnification  pursuant to this Agreement or
otherwise,  and (v) all  unexpended  funds in such  trust  shall  revert  to the
Company  upon a  final  determination  by  Indemnitee  or a court  of  competent
jurisdiction,  as the case may be, that  Indemnitee  has been fully  indemnified
under  the  terms of this  Agreement.  Trustee  shall be  chosen by the Board of
Directors.  Nothing in this  Paragraph 8 shall relieve the Company of any of its
obligations under this Agreement.

         9. Advance of Expenses; Failure to Pay Claim.

                  (a) Written Request. If so requested by Indemnitee in writing,
the Company shall (subject to the Expense Advance Rules  hereinafter  described)
advance to Indemnitee  (an "Expense  Advance") any and all Expenses  incurred in
connection with the  investigation or preparation of Indemnitee's  participation
in any Indemnifiable  Action or Indemnifiable  Derivative  Action,  whether as a
witness or a party,  pursuant to this  Agreement.  The Company shall comply with
Indemnitee's  written  request for an Expense  Advance  within ten (10) business
days  of  receipt  of such  written  request  together  with  the  reimbursement
commitment  referred to in subparagraph (b) below. If the Company does not honor
Indemnitee's  request for an Expense Advance,  Indemnitee may bring an action in
any court of competent  jurisdiction to enforce the right to an Expense Advance,
and the  Company  shall have the burden of proof in such  action to  demonstrate
that the Expense Advance is not payable.
<PAGE>
Indemnification Agreement                                               Page - 8



                  (b) Reimbursement by Indemnitee. The obligation of the Company
to make an Expense  Advance  shall be subject to the  condition  that,  if it is
ultimately  determined (by final judicial  determination  from which there is no
further  right to appeal)  that there are  matters  to which  Indemnitee  is not
entitled to indemnity under this Agreement,  the Company shall be entitled to be
reimbursed  by Indemnitee  for all such amounts.  Prior to obtaining the initial
Expense  Advance,  Indemnitee  must confirm  such  reimbursement  obligation  by
delivery  to Company of a signed  undertaking  in the form of Exhibit A attached
hereto or in such other form as Company may accept reasonably.

                  (c)  Expense  Advance  Rules.  Expenses  in all cases  must be
reasonable and comply with existing or future billing  procedures of the Company
so that the Company can monitor and audit reasonably such Expenses. With respect
to attorneys'  fees, the Company will give reasonable  consideration to requests
for specific  counsel and to requests for the grouping of individuals  for joint
defense  purposes.  Any attorney  representing  more than one  individual may be
requested  to  render  separate  billing  statements  to each  such  represented
individual or otherwise allocate billings by such represented individual.

                  (d)  Failure to Pay  Claim.  If loss has been  incurred  and a
claim for indemnification under this Agreement is not paid by the Company within
ten (10)  business  days after a written claim has been received by the Company,
Indemnitee may at any time thereafter  bring suit against the Company to recover
any unpaid amount of the claim.

         10. Burden of Proof. In connection with any determination as to whether
Indemnitee is entitled to be indemnified hereunder, the burden of proof shall be
on the Company to establish that Indemnitee is not so entitled.

         11. No Presumption.  For purposes of this Agreement, the termination of
any action, suit or proceeding by judgment,  order,  settlement (whether with or
without court approval) or conviction, or upon a plea of nolo contendere, or its
equivalent,  shall not create a  presumption  that  Indemnitee  did not meet any
particular standard of conduct or have any particular belief or that a court has
determined  that  indemnification  is not  payable  under  this  Indemnification
Agreement or permitted by applicable law.

         12. Nonexclusivity, Etc. The rights of Indemnitee hereunder shall be in
addition to any other rights Indemnitee may have under the Company's Certificate
of Incorporation,  or the Delaware General Corporation Law or otherwise.  To the
extent that a change in the Delaware General Corporation Law (whether by statute
or judicial decision) permits greater indemnification by agreement than would be
afforded  currently under the Company's  Certificate of  Incorporation  and this
Agreement, it is the intent of the parties hereto that Indemnitee shall enjoy by
this Agreement the greater benefits so afforded by such change.
<PAGE>
Indemnification Agreement                                               Page - 9



         13.  Liability  Insurance.  To the  extent  the  Company  maintains  an
insurance  policy or  policies  providing  directors'  and  officers'  liability
insurance, Indemnitee shall be covered by such policy or policies, in accordance
with its or their terms, to the maximum extent of the coverage available for any
Company  Director,  Officer or Indemnitee.  If Indemnitee incurs any Expenses in
tendering  the  defense of the Action to the  insurance  company  providing  the
Directors   and  Officers   insurance,   such   Expenses   shall  be  considered
indemnifiable Expenses.

         14.  Period of  Limitations.  No legal  action  shall be brought and no
cause of action  shall be  asserted  by or in the right of the  Company  against
Indemnitee,   Indemnitee's  spouse,  heirs,   executors  or  personal  or  legal
representatives  after the  expiration  of two years from the date of accrual of
such cause of action,  and any claim or cause of action of the Company  shall be
extinguished and deemed released unless asserted by the timely filing of a legal
action  within  such two year  period;  provided,  however,  that if any shorter
period of limitations  is otherwise  applicable to any such cause of action such
shorter period shall govern.

         15.  No  Right  To  Continued  Employment.  Nothing  contained  in this
Indemnification  Agreement  is  intended  to,  or  shall,  create  any  right to
continued employment by the Company.

         16. Amendments and Waiver. No supplement, modification, or amendment of
this  Agreement  shall be  binding  unless  executed  in  writing by both of the
parties hereto;  provided,  however,  that if any provision of this Agreement is
challenged  as being  unlawful,  the parties  agree that the court in which such
challenge is litigated may modify such  provision so that it is  enforceable  to
the  maximum  extent  permitted  by law  and may  enforce  the  Agreement  as so
modified.  No waiver of any of the provisions of this Agreement  shall be deemed
or shall  constitute  a waiver of any other  provisions  hereof  (whether or not
similar) nor shall such waiver constitute a continuing waiver.

         17.  Subrogation.  In the event of payment  under this  Agreement,  the
Company  shall be  subrogated to the extent of such payment to all of the rights
of recovery of  Indemnitee,  who shall execute all papers  required and shall do
everything that may be necessary to secure such rights,  including the execution
of such documents  necessary to enable the Company  effectively to bring suit to
enforce such rights.

         18. Binding Effect. Etc. This Agreement shall be binding upon and inure
to the benefit of and be enforceable by the parties hereto and their  respective
successors, heirs, and assigns.

         l9. Termination by Company. This Agreement shall continue in full force
and effect, regardless of whether Indemnitee continues to serve as an officer or
director of the Company or any other enterprise at the Company's request, unless
terminated pursuant to this Paragraph 19. By giving written notice to Indemnitee
at his or her address according to Company records,
<PAGE>
Indemnification Agreement                                              Page - 10



the Company,  prior to a Potential  Change of Control or Change of Control,  may
terminate its obligations under this Indemnification  Agreement as to any act or
omission of  Indemnitee  after such  written  notice is given.  Notice is deemed
given when  actually  received  or two days after  being sent by  registered  or
certified mail, whichever is earlier.

         20.  Severability.  The provisions of this Agreement shall be severable
and, in the event that any of the  provisions  hereof  (including  any provision
within a single section, paragraph or sentence) are held by a court of competent
jurisdiction  to be invalid,  void or  otherwise  unenforceable,  the  remaining
provisions  shall remain  enforceable  to the fullest  extent  permitted by law,
including  the  provisions  that  have  been  modified  by a court  pursuant  to
Paragraph 16 hereof.

         21.  Governing Law. This  Agreement  shall be governed by and construed
and enforced in accordance with the laws of the State of Delaware  applicable to
contracts  made and to be performed in such state  without  giving effect to the
principles of conflicts of laws.

         22.   Prior   Agreements.   This   Agreement   supersedes   all   prior
Indemnification Agreements between the Company and Indemnitee.

M.D. LABS, INC.


By:_____________________________

Its:____________________________


________________________________
Todd P. Belfer, Indemnitee
<PAGE>
                                    EXHIBIT A
                                    ---------


_____ __, l996


M.D. Labs, Inc.
Attention:  Chief Executive Officer
1719 W. University
Suite 187
Tempe, Arizona  85281


Re:      Indemnification Agreement Dated            , l996 (the "Agreement")
         -------------------------------------------------------------------

Ladies and Gentlemen:

         I am  the  beneficiary  of the  above  Agreement  and  am a  defendant,
witness,    or   other    participant    in   the   following    legal   action:
________________________________________________________.    A   copy   of   the
Complaint in this action is attached for your information.

         Pursuant to Paragraph 9 of the  Agreement,  I hereby  request that M.D.
Labs, Inc. advance my Expenses as such term is used in the Agreement, subject to
the Expense Advance Rules, as such Rules are applied in the Agreement.  I hereby
confirm that I will reimburse M.D. Labs, Inc. for all the amounts advanced to me
that are ultimately determined (by final judicial determination from which there
is no further right to appeal) to be  associated  with matters to which I am not
entitled to indemnity under the Agreement.

         If any  additional  information  is needed,  my address  and  telephone
number are listed below:

Address:
_________________________
_________________________
_________________________

Telephone Number:
_________________
Very truly yours,

                                                                      Exhibit 11


                                 M.D. Labs, Inc.
              Statement Regarding Computation of Per-Share Earnings

                    Calculation of Earnings Per Common Share
<TABLE>
<CAPTION>
                                                                                    Year Ended        Year Ended
                                                                                   May 31, 1996      May 31, 1995
<S>                                                                               <C>               <C>           
Pro forma net income for earnings per-share calculation                           $      915,632    $      343,673
                                                                                  ---------------   ---------------

Weighted average shares outstanding at May 31                                          3,000,000         3,000,000
Stock options,  less the number of shares assumed purchased under
the Treasury Stock Method                                                                112,714           112,714
Warrants, less the number of shares assumed purchased under the
Treasury Stock Method                                                                    217,185           217,185
                                                                                  ---------------   ---------------

Weighted average common shares outstanding                                             3,329,899         3,329,899
                                                                                  ===============   ===============

Pro forma net income per common share
   (Primary and Fully Diluted)                                                    $         0.27    $         0.10
                                                                                  ---------------   ---------------
</TABLE>

                                                                    Exhibit 21.1



                                 M.D. LABS, INC.
                                  SUBSIDIARIES



                                Jurisdiction of      Name Under Which Subsidiary
Subsidiary                      Incorporation              Does Business        
- ----------                      -------------              -------------        
                                
Belnik Investment Group, Inc.      Arizona           Freedom Wholesalers, Inc.

MDLA, Inc.                         Arizona           MDLA, Inc.

                                                                    Exhibit 23.1








                       Consent of Independent Accountants


We consent to the inclusion in this  Registration  Statement on Form SB-2 of our
report dated July 12, 1996,  on our audit of the  financial  statements  of M.D.
Labs,  Inc.  We also  consent to the  reference  to our firm  under the  caption
"Experts."





Phoenix, Arizona
September 11, 1996

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated:  9/9/96                         /s/ Hooman Nikzad
      -------------                    -----------------------------
                                             Hooman Nikzad
                                             Chief Executive Officer
                                             and Director



                                       Witness:


                                       /s/ Todd P. Belfer
                                       ------------------------------
                                              Signature

                                           Todd P. Belfer
                                       ------------------------------
                                              Print Name


STATE OF ARIZONA           )
                           )ss.
COUNTY OF MARICOPA         )


Subscribed and sworn to before me this 
9th day of September, 1996.
- ---        ---------


/s/ Rita K. Rodeheaver
- ------------------------------
Notary Public


My commission expires:

November 15, 1999
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Todd P. Belfer
      -------------                    -----------------------------
                                             Todd P. Belfer
                                             President and Director



                                       Witness:


                                       /s/ Fred Djahandideh
                                       ------------------------------
                                              Signature


                                            Fred Djahandideh
                                       ------------------------------
                                              Print Name


STATE OF ARIZONA           )
                           )ss.
COUNTY OF MARICOPA         )


Subscribed and sworn to before me this 
9th day of September, 1996.
- ---        ---------

/s/ Rita K. Rodeheaver
- ------------------------------
Notary Public


My commission expires:

November 15, 1999
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Fred Djahandideh
      ------------                     ---------------------------------------
                                              Faradjollah Djahandideh
                                              Vice President, Operations,
                                              Secretary/Treasurer and Director


                                       Witness:


                                       /s/ Harvey A. Belfer
                                       ----------------------------------------

                                               Signature


                                           Harvey A. Belfer
                                       ----------------------------------------
                                               Print Name


STATE OF ARIZONA                    )
                                    )ss.
COUNTY OF Maricopa                  )


Subscribed and sworn to before me this 
9th day of September, 1996.


/s/ Rita K. Rodeheaver
- ------------------------------
Notary Public


My commission expires:

November 15, 1999
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Bradley A. Denton
      -------------                    ------------------------------------
                                             Bradley A. Denton
                                             Chief Financial Officer,
                                             Vice President, Assistant
                                             Secretary and Director

                                       Witness:


                                       /s/ Bart Catmull
                                       -------------------------------------
                                             Signature


                                           Bart Catmull
                                       --------------------------------------
                                             Print Name


STATE OF ARIZONA                    )
                                    )ss.
COUNTY OF Maricopa                  )


Subscribed and sworn to before me this 
9th day of September, 1996.


/s/ Rita K. Rodeheaver
- ------------------------------
Notary Public


My commission expires:

November 15, 1999
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Harvey A. Belfer
      -----------------                -----------------------------------------
                                             Harvey A. Belfer
                                             Director



                                             Witness:


                                       /s/ Fred Djahandideh
                                       -----------------------------------------
                                             Signature


                                            Fred Djahandideh
                                       -----------------------------------------
                                             Print Name


STATE OF ARIZONA                    )
                                    )ss.
COUNTY OF Maricopa                  )


Subscribed and sworn to before me this 
9th day of September, 1996.


/s/ Rita K. Rodeheaver
- ------------------------------
Notary Public


My commission expires:

November 15, 1999
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Allan Richard Lyons
      -------------                    -----------------------------------------
                                             Allan Richard Lyons
                                             Director



                                             Witness:


                                       /s/ Kaye P. Coates
                                       -----------------------------------------
                                             Signature


                                           Kaye P. Coates
                                       -----------------------------------------
                                             Print Name


STATE OF NEW YORK                   )
                                    )ss.
COUNTY OF BLOOME                    )


Subscribed and sworn to before me this 
___ day of _________, 1996.


/s/ Frances M. Santoni
- ------------------------------
Notary Public


My commission expires:

March 30, 1998
[SEAL]
<PAGE>
                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS,  that the  undersigned  constitutes and
appoints  Todd P. Belfer and Bradley A. Denton,  and each of them,  his true and
lawful  attorneys-in-fact  and  agents,  with  full  power of  substitution  and
resubstitution  for  him  and in his  name,  place  and  stead,  in any  and all
capacities,  to sign the Registration  Statement of M.D. Labs, Inc. on Form SB-2
to  which  this  Power  of  Attorney  is  attached,  and any and all  amendments
(including  post-effective  amendments)  thereto, and to file the same, with all
exhibits  thereto,  and  other  documents  in  connection  therewith,  with  the
Securities and Exchange Commission and any state securities commission, granting
unto  said  attorneys-in-fact  and  agents,  and each of them,  full  power  and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully to all intents and purposes as he
might or could do in  person,  hereby  ratifying  and  confirming  all that said
attorneys-in-fact  and  agents  or any of them,  or their or his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.



Dated: 9/9/96                          /s/ Kenneth A. Steel, Jr.
      ------------                     -----------------------------------------
                                             Kenneth A. Steel, Jr.
                                             Director



                                             Witness:


                                       /s/ Chris La Fleur
                                       -----------------------------------------
                                             Signature



                                            Chris La Fleur
                                       -----------------------------------------
                                             Print Name


STATE OF ARIZONA                    )
                                    )ss.
COUNTY OF Maricopa                  )


Subscribed and sworn to before me this 
9th day of September, 1996.


/s/ Robin K. McEntire
- ------------------------------
Notary Public


My commission expires:

September 21, 1998
[SEAL]

<TABLE> <S> <C>

<ARTICLE>                     5
<LEGEND>
                  THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
                  FROM THE  REGISTRANT'S  REGISTRATION  STATEMENT  ON FORM  SB-2
                  FILED ON  SEPTEMBER  11, 1996 AND IS QUALIFIED IN ITS ENTIRETY
                  BY REFERENCE TO SUCH FORM SB-2
</LEGEND>
<MULTIPLIER>                                         1
<CURRENCY>                                U.S. DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          MAY-31-1996
<PERIOD-START>                             JUN-01-1995
<PERIOD-END>                               MAY-31-1996
<EXCHANGE-RATE>                                      1
<CASH>                                          91,799
<SECURITIES>                                         0
<RECEIVABLES>                                  647,736
<ALLOWANCES>                                    27,876
<INVENTORY>                                  1,080,406
<CURRENT-ASSETS>                             1,864,929
<PP&E>                                         340,386
<DEPRECIATION>                                 120,987
<TOTAL-ASSETS>                               2,691,670
<CURRENT-LIABILITIES>                          673,817
<BONDS>                                              0
                                0
                                          0
<COMMON>                                         3,000
<OTHER-SE>                                   2,014,853
<TOTAL-LIABILITY-AND-EQUITY>                 2,691,670
<SALES>                                      5,191,067
<TOTAL-REVENUES>                             5,191,067
<CGS>                                        1,510,479
<TOTAL-COSTS>                                2,141,926
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              12,991
<INCOME-PRETAX>                              1,525,671
<INCOME-TAX>                                   610,039
<INCOME-CONTINUING>                            915,632
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   915,632
<EPS-PRIMARY>                                      .27
<EPS-DILUTED>                                      .27
        

</TABLE>


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