PERARDUA CORP
SB-2/A, 1997-06-05
PHARMACEUTICAL PREPARATIONS
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AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 5, 1997
                                                 REGISTRATION NO. 333-21209
================================================================================
    

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

   
                               AMENDMENT NO. 2 TO
                                    Form SB-2
    

             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

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

                              PERARDUA CORPORATION
                 (NAME OF SMALL BUSINESS ISSUER IN ITS CHARTER)

                                 ---------------
            DELAWARE                                            62-1667690     
  (STATE OR OTHER JURISDICTION                               (I.R.S. EMPLOYER  
OF INCORPORATION OR ORGANIZATION)                           IDENTIFICATION NO.)
                                                                               
                                      2836
                          (PRIMARY STANDARD INDUSTRIAL
                           CLASSIFICATION CODE NUMBER)

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

        PERARDUA CORPORATION                      SAMUEL P. SEARS, JR.         
10940 WILSHIRE BOULEVARD, SUITE 1600              PERARDUA CORPORATION         
    LOS ANGELES, CALIFORNIA 90024                16 SOUTH MARKET STREET        
           (310) 443-4240                      PETERSBURG, VIRGINIA 23803      
  (ADDRESS AND TELEPHONE NUMBER OF                   (804) 861-0681            
    PRINCIPAL EXECUTIVE OFFICES)           (NAME, ADDRESS AND TELEPHONE NUMBER 
                                                  OF AGENT FOR SERVICE)        
                                                                               
               
                              PERARDUA CORPORATION
                      10940 WILSHIRE BOULEVARD, SUITE 1600
                          LOS ANGELES, CALIFORNIA 90024
                                 (310) 443-4240
                     (ADDRESS OF PRINCIPAL PLACE OF BUSINESS
                    OR INTENDED PRINCIPAL PLACE OF BUSINESS)

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

                          COPIES OF COMMUNICATIONS TO:

       J. BENJAMIN ENGLISH, ESQ.                     WILLIAM M. PRIFTI, ESQ.    
LECLAIR RYAN, A PROFESSIONAL CORPORATION           LYNNFIELD WOODS OFFICE PARK  
    707 EAST MAIN STREET, SUITE 1100                 220 BROADWAY, SUITE 204    
        RICHMOND, VIRGINIA 23219                 LYNNFIELD, MASSACHUSETTS 01940 
           (804) 783-2003                                (617) 593-4525         
                                                 
                                 ---------------

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

    If any of the securities  being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, check the following box: [x]

    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. [ ]


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

    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 SECTION 8(A), MAY
DETERMINE.






   
                   SUBJECT TO COMPLETION, DATED JUNE 5, 1997
    

PROSPECTUS
- ----------

                              PERARDUA CORPORATION

                        1,000,000 SHARES OF COMMON STOCK
                          1,000,000 REDEEMABLE WARRANTS

    PerArdua  Corporation  ("PerArdua"  or the  "Company")  hereby  offers  (the
"Offering")  1,000,000 shares of the Company's common stock,  $.01 par value per
share (the "Common Stock"),  and 1,000,000  Redeemable Warrants (the "Redeemable
Warrants").  The Common Stock and the  Redeemable  Warrants  offered  hereby are
sometimes  hereinafter  collectively  referred  to  as  the  "Securities."  Each
Redeemable  Warrant entitles the holder to purchase one share of Common Stock at
a price of $6.50 per share beginning ____________,  1998 and ending ___________,
2002,  unless the  Redeemable  Warrants  are redeemed by the Company as provided
herein.  The  Redeemable  Warrants are redeemable by the Company at a redemption
rate of $.20 per Redeemable  Warrant at any time commencing , 1998 upon 30 days'
prior  written  notice,  provided  that the  average  closing  bid  price of the
Company's  Common Stock equals or exceeds  $9.00 per share for a 20  consecutive
trading day period. See "DESCRIPTION OF SECURITIES."

    Prior to the Offering,  no public market for the  Securities  existed and no
assurance can be given that any such market will develop after the completion of
the  Offering  or,  that if  developed,  such market  will be  sustained.  It is
currently  anticipated that the initial public offering prices will be $5.00 per
share of  Common  Stock  and $.10 per  Redeemable  Warrant.  For the  method  of
determining  the initial  public  offering  price of the  Securities,  see "RISK
FACTORS" and  "UNDERWRITING."  The Company intends to apply for inclusion of the
shares of Common Stock and the Redeemable Warrants on the Nasdaq SmallCap Market
under the symbols "PRDU" and "PRDUW," respectively.

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

    THESE ARE SPECULATIVE SECURITIES. THE SECURITIES OFFERED HEREBY INVOLVE A
HIGH DEGREE OF RISK AND IMMEDIATE SUBSTANTIAL DILUTION. INVESTORS SHOULD BE ABLE
       TO SUSTAIN A COMPLETE LOSS OF THEIR INVESTMENT. SEE "RISK FACTORS"
           AND "DILUTION" ON PAGES 6 THROUGH 17 AND 19, RESPECTIVELY.

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

    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.

<TABLE>
<CAPTION>
================================================================================
                                      PRICE TO      UNDERWRITING     PROCEEDS TO
                                       PUBLIC       DISCOUNTS(1)      COMPANY(2)
- --------------------------------------------------------------------------------
<S>                                  <C>            <C>               <C>
Per Share                              $5.00            $.50            $4.50
- --------------------------------------------------------------------------------
Per Redeemable Warrant                 $ .10            $.01            $ .09
- --------------------------------------------------------------------------------
Total(3)                             $5,100,000       $510,000        $4,590,000
================================================================================
</TABLE>

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

   
(1) Does not reflect additional compensation to be received in the form of (a) a
    3%  non-accountable  expense  allowance in the amount of $153,000 payable to
    Schneider  Securities,  Inc.  ("Schneider")  and Lew  Lieberbaum & Co., Inc.
    (collectively,  the  "Representatives"),  as the  co-representatives  of the
    underwriters (the "Underwriters"), (b) a consulting fee payable to Schneider
    in the amount of $3,000 per month for a period of 36 months and (c) warrants
    issued to the Representatives to purchase up to 100,000 additional shares of
    Common Stock and 100,000 Redeemable  Warrants at 160% of the public offering
    price of the Securities (the "Representatives'  Warrants"). In addition, the
    Company has agreed to  indemnify  the  Underwriters  against  certain  civil
    liabilities,  including  liabilities  under the  Securities  Act of 1933, as
    amended (the "Securities Act"). See "UNDERWRITING."
(2) Before deducting additional expenses of the Offering payable by the Company,
    estimated  at  $450,000,  including  the  Representatives'   non-accountable
    expense allowance and the consulting fee payable to the Representatives.
(3) The  Company has  granted  the  Underwriters  an option to purchase up to an
    additional 150,000 shares of Common Stock and/or 150,000 Redeemable Warrants
    on  the  same  terms  and  conditions  set  forth  above,  solely  to  cover
    over-allotments,  if any. If the over-allotment option is exercised in full,
    the total  "Price to Public,"  "Underwriting  Discounts"  and  "Proceeds  to
    Company" will be  $5,865,000,  $586,500 and  $5,278,500,  respectively.  See
    "UNDERWRITING."
    

    The  Securities  are  being  offered  on a "firm  commitment"  basis  by the
Underwriters, when, as, and if delivered to and accepted by the Underwriters and
subject to prior  sale,  withdrawal  or  cancellation  of the  Offering  without
notice. It is expected that delivery of certificates representing the Securities
will be made at the clearing offices of Schneider Securities,  Inc., on or about
_____________, 1997.

   
SCHNEIDER SECURITIES, INC.                            LEW LIEBERBAUM & CO., INC.
    
           THE DATE OF THIS PROSPECTUS IS                , 1997.













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

    PRIOR TO THE  OFFERING,  THE COMPANY WAS NOT A REPORTING  COMPANY  UNDER THE
SECURITIES EXCHANGE ACT OF 1934, AS AMENDED (THE "EXCHANGE ACT").  SUBSEQUENT TO
THE OFFERING,  THE COMPANY INTENDS TO FURNISH TO ITS SHAREHOLDERS ANNUAL REPORTS
CONTAINING FINANCIAL STATEMENTS AUDITED BY ITS INDEPENDENT ACCOUNTANTS, AND SUCH
OTHER  PERIODIC  REPORTS AS IT MAY DETERMINE TO FURNISH OR AS MAY BE REQUIRED BY
LAW.

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

   
CALIFORNIA  INVESTORS  SHOULD NOTE THAT THE DEPARTMENT OF CORPORATIONS  REQUIRES
THAT INVESTORS MUST MEET THE FOLLOWING  SUITABILITY  STANDARDS:  (I) AN INVESTOR
MUST HAVE A LIQUID NET WORTH OF NOT LESS THAN $250,000 (A NET WORTH EXCLUSIVE OF
HOME,  HOME  FURNISHINGS  AND  AUTOMOBILE)  PLUS $65,000  GROSS ANNUAL INCOME OR
$500,000 LIQUID NET WORTH; OR (II) $1,000,000 NET WORTH  (INCLUSIVE) OR $200,000
GROSS ANNUAL INCOME.

IN ADDITION,  CALIFORNIA  INVESTORS  SHOULD NOTE THAT THE EXEMPTION  PROVIDED BY
SECTION 25104(H) OF THE CALIFORNIA CORPORATION CODE WILL NOT BE AVAILABLE.  THIS
MEANS  THAT  THERE  WILL  BE NO  AFTERMARKET  TRADING  IN  PERARDUA  CORPORATION
SECURITIES IN THE STATE OF CALIFORNIA.  PERARDUA AND THE UNDERWRITER HAVE AGREED
NOT TO APPLY FOR THE EXEMPTION  PROVIDED UNDER SECTION 25101(B) FOR 90 DAYS FROM
THE CLOSING OF THE OFFERING.
    










                               PROSPECTUS SUMMARY

    The following  summary is qualified in its entirety by reference to the more
detailed  information,  including  "RISK  FACTORS" and the  Company's  financial
statements and related notes thereto appearing elsewhere in this Prospectus. The
Common Stock and  Redeemable  Warrants  offered  hereby involve a high degree of
risk.  Investors  in the Offering  should be able to sustain a complete  loss of
their  investment.   See  "RISK  FACTORS."  This  Prospectus   contains  certain
forward-looking  statements that involve risks and  uncertainties.  See "SPECIAL
NOTE REGARDING FORWARD-LOOKING STATEMENTS." The Company's actual results and the
timing of certain  events could  differ  materially  from those  discussed in or
projected  by the  forward-looking  statements.  Factors  that  could  cause  or
contribute to such differences include those discussed under "RISK FACTORS."

                                   THE COMPANY

    The Company is a development  stage  pharmaceutical  company  engaged in the
development  of a single  anti-viral  compound for which the Company has adopted
the trade name  "Thiovir(tm)."  The initial focus of the  Company's  development
activities  will be to  demonstrate  the safety  and  efficacy  of  Thiovir  for
treatment of patients infected with human  immunodeficiency  virus ("HIV"),  the
virus which is the precursor to acquired immunodeficiency syndrome ("AIDS"), and
patients showing active  infection of the  opportunistic  virus  cytomegalovirus
("CMV")  which  causes  blindness  and  other   conditions.   CMV  is  a  common
opportunistic  infection among AIDS patients. The Company believes that Thiovir,
if successfully  developed and approved for sale,  would  constitute a candidate
for  inclusion in  combination  drug therapy for  HIV/AIDS  treatment  and would
provide  several  benefits over existing  treatments for CMV,  particularly  its
potential ability to replace more toxic intravenous  treatment with a less toxic
oral treatment. The only development work on Thiovir to date has been limited to
laboratory and animal studies conducted by the University of Southern California
("USC"),  which has licensed to the Company its  proprietary  rights to Thiovir,
and by other academic  and/or research  organizations  which have no affiliation
with the Company.  Therefore,  Thiovir is in an early stage of development.  See
"BUSINESS -- Targeted  Indications for Thiovir" and "-- Research and Development
Status and Activities."

    In the  United  States,  the use and sale of Thiovir is subject to the rules
and regulations of the United States Food and Drug Administration  ("FDA"),  and
obtaining the necessary FDA approval will require substantial  preclinical tests
and clinical trials. The Company expects to commence clinical trials for Thiovir
in 1997. The Company believes that Thiovir may meet the criteria  established by
the FDA for  accelerated  approval.  As a  result,  the  Company  may be able to
commercialize  Thiovir  in a shorter  time  period  than has  historically  been
applicable for a drug that does not meet the criteria for accelerated  approval.
See "BUSINESS -- Government Regulation."

    Initially,   the   Company   intends  to   maintain   a  limited   corporate
infrastructure    devoted   almost    exclusively   to   the   development   and
commercialization  of Thiovir.  Accordingly,  the Company  will engage  contract
research organizations ("CROs") to conduct preclinical tests and clinical trials
on Thiovir.  The Company will also contract with other  companies to manufacture
the drug.  The Company  intends to rely upon part-time  consultants  and CROs to
provide  expertise in designing  appropriate tests and trials and in seeking FDA
and other government approvals.  Furthermore,  the Company does not believe that
it will be  necessary  to  develop an  extensive  sales and  marketing  force to
promote  the sale of Thiovir in the United  States,  if and when it may be sold,
since  the  market  for  HIV/AIDS  and CMV  therapies  is  concentrated  among a
relatively  small  number  of  care  providers.   See  "BUSINESS  --  Sales  and
Marketing," "-- Manufacturing" and "-- Personnel."

    In August  1996,  the Company  acquired an  exclusive  worldwide  license to
proprietary  rights  to  Thiovir  held by USC from a limited  partnership  which
funded the research and  development  of Thiovir.  The Company has  generated no
revenues  from the  sale of  products  and,  as of  February  28,  1997,  had an
accumulated  deficit of  $2,227,784.  There can be no assurance that the Company
will ever achieve profitable operations. See "BUSINESS -- Relationship With USC"
and "CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS."

    On January 9, 1997, the Company reincorporated in the State of Delaware. The
term  "Company,"  when  used in this  Prospectus,  refers  to both the  Delaware
corporation  and  its  predecessor  Missouri  corporation,  unless  the  context
requires  otherwise.  The  Company's  offices  are  located  at  10940  Wilshire
Boulevard,  Suite 1600,  Los Angeles,  California,  and its telephone  number is
(310) 443-4240.

                                        3








                                  THE OFFERING


Securities Offered by the Company .......... 1,000,000  shares of  Common  Stock
                                               and     1,000,000      Redeemable
                                               Warrants.   See  "DESCRIPTION  OF
                                               SECURITIES."

Redeemable Warrants ........................ Each  Redeemable  Warrant  entitles
                                               the holder to purchase  one share
                                               of  Common  Stock  at a price  of
                                               $6.50   per    share    beginning
                                               ____________,   1998  and  ending
                                               ____________,  2002,  unless  the
                                               Redeemable  Warrants are redeemed
                                               as    provided    herein.     The
                                               Redeemable      Warrants      are
                                               redeemable  by the  Company  at a
                                               redemption   price  of  $.20  per
                                               Redeemable  Warrant  at any  time
                                               commencing  thirteen  months from
                                               the date of this Prospectus on 30
                                               days'   prior   written   notice,
                                               provided that the average closing
                                               bid  price  of the  Common  Stock
                                               equals or exceeds $9.00 per share
                                               for 20  consecutive  trading days
                                               ending  within  10 days  prior to
                                               the  notice  of  redemption.  See
                                               "DESCRIPTION OF SECURITIES."

Shares of Common Stock Outstanding             
before Offering ............................   2,643,440 shares 
Shares of Common Stock to be Outstanding       
after Offering .............................   3,643,440 shares

Use of Proceeds ............................ The  net  proceeds of this Offering
                                               will be used for further research
                                               and   development   and   working
                                               capital. See "USE OF PROCEEDS."

Risk Factors ............................... Investment   in   the    Securities
                                               involves  a high  degree  of risk
                                               and immediate dilution. See "RISK
                                               FACTORS" and "DILUTION."

Proposed Nasdaq SmallCap                       
Market Symbols(1) ..........................   Common Stock -- "PRDU"
                                               Redeemable Warrants -- "PRDUW"

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

(1) No assurance can be given that an active  trading  market for the Securities
    will  develop or be  maintained.  See "RISK  FACTORS -- No Prior  Market for
    Common Stock and the Redeemable Warrants."

   
    Except  as  otherwise  indicated,  all  share  and  per  share  data in this
Prospectus  (i) assume no  exercise  of the  Redeemable  Warrants,  (ii) give no
effect to the  300,000  shares of Common  Stock  issuable  upon  exercise of the
Underwriters'  over-allotment  option,  including 150,000 shares of Common Stock
underlying the Redeemable Warrants subject to such option;  (iii) give no effect
to 100,000 shares of Common Stock issuable upon exercise of the Representatives'
Warrants;  (iv) give no effect to the 100,000  shares of Common  Stock  issuable
upon the exercise of the Redeemable  Warrants  underlying  the  Representatives'
Warrants;  (v) assume no  exercise  of stock  options to  purchase up to 500,000
shares of Common  Stock  which may be issued  pursuant  to the  Company's  Stock
Incentive  Plan, of which,  as of the date of this  Prospectus,  the Company has
granted  options to purchase  10,000 shares of Common Stock at an exercise price
of $7.50 per share and  committed to grant to three  outside  directors  and two
officers  options to purchase an aggregate of 230,000  shares of Common Stock at
an exercise price to be determined,  but not less than $5.00 per share; and (vi)
assume no exercise of the Company's  outstanding  warrants to purchase shares of
Common Stock, of which 700,000  warrants have been issued as of the date of this
Prospectus  at an  exercise  price of $10.00 per share which may be paid in cash
or, in the event the fair market value of the Common  Stock  exceeds the warrant
exercise  price, by a reduction in the number of shares of Common Stock issuable
upon  exercise of any  warrant  determined  in  accordance  with a formula  (the
"Outstanding  Warrants").  See  "CAPITALIZATION"  and  "MANAGEMENT  -- Executive
Compensation and Other Information -- Stock Incentive Plan."
    

                                        4





                          SUMMARY FINANCIAL INFORMATION

    The following  sets forth certain  historical  financial  information of the
Company:

STATEMENT OF ACTIVITIES DATA:

<TABLE>
<CAPTION>
                                     PERIOD FROM JULY 5, 1996,     THREE MONTHS
                                      DATE OF INCEPTION, TO            ENDED
                                        NOVEMBER 30, 1996        FEBRUARY 28, 1997
                                        -----------------        -----------------
Revenue:
<S>                                    <C>                      <C>
   Interest income                     $            1,858       $            2,475
                                          ---------------          ---------------
Costs and Expense:

   Research and development                     2,058,980                   73,249
   General and administrative                      33,568                   66,320
                                          ---------------          ---------------
                                                2,092,548                  139,569
                                          ---------------          ---------------
Net loss                                       (2,090,690)                (137,094)
                                       ==================          ================
Net loss per common share(1)           $             (.81)      $             (.05)
                                       ==================          ================
Shares used in computing net loss

  per common share(1)                           2,593,440                2,593,996
                                       ==================          =================
</TABLE>

BALANCE SHEET DATA:

<TABLE>
<CAPTION>
                                                       FEBRUARY 28, 1997
                                                ------------------------------
                                                   ACTUAL        AS ADJUSTED(2)
                                               ---------------   ---------------
<S>                                             <C>              <C>
Cash and cash equivalents                        $   213,029       $ 4,353,029
Working capital                                      431,362         4,571,362
Total assets                                         502,625         4,642,625
Deficit accumulated during the development stage  (2,227,784)       (2,227,784)
Total stockholders' equity                           443,393         4,583,393
</TABLE>
- --------------

(1) See  notes  1  and  4 of  Notes  to  Financial  Statements  for  information
    concerning the  computation of net loss per share of Common Stock and shares
    of Common Stock used in computing net loss per common share.

(2) As  adjusted  to  reflect  the sale of the Common  Stock and the  Redeemable
    Warrants  offered  hereby and the  application of the estimated net proceeds
    therefrom. See "USE OF PROCEEDS."

                                        5






                                  RISK FACTORS

    The  Securities  offered  pursuant to this  Prospectus are  speculative  and
involve a high degree of risk,  and an  investment in the  Securities  should be
considered  only by investors who are capable of affording an entire loss of the
amount invested. Prospective investors should carefully consider, along with the
other information contained in this Prospectus, the following considerations and
risks in evaluating an investment in the Company.

DEVELOPMENT STAGE COMPANY

    The  Company  commenced  development  stage  activities  in  July  1996  and
accordingly has only a limited operating history upon which an evaluation of the
Company's  business and  prospects  can be based.  The Company has  generated no
revenue to date, except for interest income, and does not expect to generate any
substantial  revenues  in the near  future.  The  Company's  ability to generate
revenues and profits will depend on its ability to successfully develop clinical
applications and obtain regulatory approvals for the anti-viral drug Thiovir and
to protect its proprietary rights in Thiovir.  The Company must also develop the
capacity or  arrangements  with third  parties to  manufacture,  distribute  and
market Thiovir. There can be no assurance that the Company will be successful in
doing so. See "BUSINESS -- Overview."

UNCERTAINTY OF PRODUCT DEVELOPMENT

    Thiovir  is  in  an  early  development  stage  and  requires   significant,
time-consuming  and  costly  development,   testing  and  regulatory  clearance.
Although the Company anticipates that the development and  commercialization  of
Thiovir,  if  successful,  will occur  more  rapidly  than is typical  for a new
pharmaceutical  product, this process typically takes several years at a minimum
and can require  substantially more time. The successful  development of any new
drug is highly  uncertain and subject to a number of  significant  risks.  These
risks include,  among others,  the possibility  that Thiovir will be found to be
ineffective  or  unacceptably  toxic,  to have  unacceptable  side  effects,  or
otherwise fail to receive necessary regulatory clearances, that Thiovir will not
achieve broad market  acceptance,  that third parties will market  equivalent or
superior products,  or that third parties will hold proprietary rights that will
preclude  the  Company  from  marketing  Thiovir.  There can be,  therefore,  no
assurance  that  the  Company's  development  activities  will  demonstrate  the
efficacy and safety of Thiovir as a therapeutic  drug, or, even if demonstrated,
that there will be sufficient  advantages to the use of Thiovir over other drugs
or  treatments so as to render  Thiovir  commercially  viable.  See "BUSINESS --
Targeted Indications for Thiovir" and " -- Government Regulation."

UNCERTAINTY OF MARKET DEMAND FOR THIOVIR

    There is a considerable  degree of  uncertainty  as to the potential  market
demand for Thiovir, particularly as a CMV drug.

    The  Company is not aware of  published  data which  indicate  the extent to
which new cases of active  CMV  infection  have been  reduced as a result of the
recent  success of  combination  drug therapy  among HIV  patients.  The Company
believes,  however,  and  anecdotal  reports  confirm,  that to the extent  that
combination  drug therapy,  or any other  therapy,  is effective in treating HIV
patients, the number of new patients with active CMV infection has been and will
be  proportionately  reduced.  Consequently,  the  demand  for CMV  drugs may be
significantly  diminished  at the time,  if ever,  the Company is able to market
Thiovir. See "BUSINESS -- Potential Market for Thiovir."

    The  ability of the HIV and CMV viruses to develop  resistance  to drugs has
reduced or eliminated the  effectiveness of a number of existing drugs.  Even if
Thiovir should initially prove effective,  its  effectiveness  and acceptance in
the marketplace  may be reduced by the  development of resistant  strains of the
HIV and CMV viruses.

COMPANY'S ABILITY TO CONTINUE AS A GOING CONCERN

    The  report of the  Company's  Independent  Auditors  contains  an  emphasis
paragraph as to matters that raise substantial doubt about the Company's ability
to continue as a going

                                        6





concern,  and  management's  inability to provide any assurance that the Company
will  obtain  sufficient   financing  to  continue  as  a  going  concern.   See
"MANAGEMENT'S  DISCUSSION  AND  ANALYSIS OF FINANCIAL  CONDITION  AND RESULTS OF
OPERATIONS," the Company's  Financial  Statements and Notes, and the Independent
Auditor's Report included elsewhere herein.

RELIANCE ON A SINGLE TECHNOLOGY; LIMITED SCOPE OF OPERATIONS

    The  Company  currently  intends to focus its  business  exclusively  on the
development and commercialization of the experimental drug Thiovir. In the event
the  Company  is not  successful  in  developing  and  commercializing  Thiovir,
investors are likely to realize a loss of all amounts invested in the Company.

ACCUMULATED DEFICIT; UNCERTAINTY OF FUTURE PROFITABILITY

    The Company has  incurred  losses  since its  inception.  As of February 28,
1997, the Company's  accumulated  deficit was  $2,227,784.  Losses have resulted
principally  from costs incurred in the  acquisition  and development of Thiovir
and general and  administrative  costs.  These costs have exceeded the Company's
revenues,  which to date have been generated  solely from interest  income.  The
Company  has not  generated  any revenue to date from the sale of drugs and does
not  expect to do so until  Thiovir  has been  approved  for sale.  The  Company
expects to incur significant  additional operating losses which will increase as
the Company's drug development  efforts expand. The Company's ability to achieve
profitability  will depend  upon its  ability to develop  and obtain  regulatory
approval  for Thiovir and to develop the capacity  (or  establish  relationships
with third  parties) to  manufacture,  market and sell Thiovir.  There can be no
assurance  that the Company will ever generate  significant  revenues or achieve
profitable  operations.  See "BUSINESS -- Government  Regulation," "-- Sales and
Marketing," and "-- Manufacturing."

FUTURE CAPITAL NEEDS; UNCERTAINTY OF ADDITIONAL FUNDING

    The  Company's  drug  development   program  requires   substantial  capital
expenditures, including expenditures for preclinical testing and clinical trials
of  Thiovir.  The  Company's  future  capital  requirements  will depend on many
factors,  including  the scope and results of  preclinical  testing and clinical
trials, the cost, timing and outcome of regulatory  reviews,  administrative and
legal  expenses  (including  potential  expenses of defending  and enforcing the
Company's  proprietary patent rights to Thiovir),  the establishment of capacity
for sales and marketing functions, the establishment of relationships with third
parties for manufacturing  and sales and marketing  functions and other factors.
The Company expects that its capital requirements will increase significantly in
the future.  See "BUSINESS -- Government  Regulation,"  "-- Sales and Marketing"
and "-- Manufacturing."

    The  Company  has  incurred   negative  cash  flow  from  development  stage
activities since inception and does not expect to generate positive cash flow to
fund its  operations  for at least the next  several  years.  As a  result,  the
Company  believes that  substantial  additional  equity or debt financing may be
required to fund its operations. There can be no assurance that the Company will
be able to consummate  any such  financing at all or on favorable  terms or that
such financings will be adequate to meet the Company's capital requirements. Any
additional  equity  financing  could  result  in  substantial  dilution  to  the
Company's  stockholders,   and  debt  financing,   if  available,   may  involve
restrictive  covenants which preclude the Company from making  distributions  to
stockholders and taking other actions  beneficial to  stockholders.  If adequate
funds are not  available,  the  Company  may be  required to delay or reduce the
scope of its drug  development  program or attempt to  continue  development  by
entering  into  arrangements  with  collaborative  partners  or others  that may
require the  Company to  relinquish  some or all of its rights to  Thiovir.  The
Company's  inability  to fund its  capital  requirements  would  have a material
adverse effect on the Company. See "USE OF PROCEEDS" and "DILUTION."

EXTENSIVE GOVERNMENT REGULATION; NO ASSURANCE OF REGULATORY APPROVAL

    Human  pharmaceutical  products are subject to rigorous  preclinical testing
and  clinical  trials  and other  approval  procedures  mandated  by the FDA and
foreign  regulatory  authorities.  Various  federal  and  foreign  statutes  and
regulations  also  govern or  influence  the  manufacturing,  safety,  labeling,
storage,

                                        7






record  keeping  and  marketing  of  pharmaceutical  products.  The  process  of
obtaining these approvals and the subsequent  compliance with appropriate United
States and foreign statutes and regulations are  time-consuming  and require the
expenditure  of  substantial  resources.  In addition,  these  requirements  and
processes vary widely from country to country. Among the uncertainties and risks
of the FDA approval process are the following:  the possibility that studies and
clinical trials shall fail to prove the safety and efficacy of the drug, or that
any  demonstrated  efficacy  will be so  limited as to  significantly  reduce or
altogether  eliminate the  acceptability  of the drug in the market  place;  the
possibility  that the costs of  development,  which can far  exceed  the best of
estimates,  may render  commercialization  of the drug marginally  profitable or
altogether  unprofitable;  and the possibility  that the amount of time required
for FDA approval of a drug may extend for years beyond that which is  originally
estimated.  In addition,  the FDA or similar foreign regulatory  authorities may
require  additional  clinical trials,  which could result in increased costs and
significant  development  delays.  Delays or rejections  may also be encountered
based upon changes in FDA policy and the establishment of additional regulations
during the period of  product  development  and FDA  review.  Similar  delays or
rejections may be encountered  in other  countries.  Thiovir may not qualify for
accelerated  development  and/or  approval  under FDA  regulations  and, even if
Thiovir does so qualify,  it may not be approved for marketing sooner than would
be historically expected or at all.

    There can be no assurance that even after substantial time and expenditures,
Thiovir will receive FDA approval on a timely basis or at all. If the Company is
unable to demonstrate the safety and efficacy of Thiovir to the  satisfaction of
the FDA, the Company will be unable to commercialize Thiovir. Even if regulatory
approval of Thiovir is  obtained,  the approval  may entail  limitations  on the
indicated  uses for which  Thiovir  may be  marketed.  A marketed  product,  its
manufacturer and the  manufacturer's  facilities are subject to continual review
and  periodic  inspections,  and  subsequent  discovery  of  previously  unknown
problems with a product,  manufacturer or facility may result in restrictions on
such  product or  manufacturer,  including  withdrawal  of the product  from the
market. The failure to comply with applicable regulatory requirements can, among
other things, result in fines,  suspension of regulatory  approvals,  refusal to
approve pending applications,  refusal to permit exports from the United States,
product  recalls,  seizure of  products,  operating  restrictions  and  criminal
prosecutions.

    The effect of government regulation may be to delay the marketing of Thiovir
for a  considerable  period  of  time,  to  impose  costly  requirements  on the
Company's activities or to provide a competitive advantage to the companies that
compete  with the  Company.  Adverse  clinical  results  by others  could have a
negative  impact on the  regulatory  process  and  timing  with  respect  to the
development  and  approval  of Thiovir.  The Company is also  subject to various
federal,  state  and  local  laws  and  regulations  relating  to  safe  working
conditions,  laboratory and  manufacturing  practices,  the  experimental use of
animals  and  the  use  and  disposal  of  hazardous  or  potentially  hazardous
substances,  including radioactive compounds and infectious disease agents, used
in connection with its development work. The extent and character of potentially
adverse  governmental  regulation  that may arise  from  future  legislation  or
administrative   action  cannot  be  predicted.   See  "BUSINESS  --  Government
Regulation."

UNCERTAINTIES RELATED TO CLINICAL TRIALS

    Before obtaining  required  regulatory  approvals for the commercial sale of
Thiovir,  the Company must demonstrate  through preclinical testing and clinical
trials that Thiovir is safe and effective for use in each target indication. The
results from preclinical testing and early clinical trials may not be predictive
of results  that will be obtained in pivotal  clinical  trials.  There can be no
assurance that the Company's clinical trials will demonstrate  sufficient safety
and  effectiveness to obtain required  regulatory  approvals or will result in a
marketable  product. A number of companies in the  pharmaceutical  industry have
suffered  significant setbacks in advanced clinical trials, even after promising
results in earlier  trials.  Similar  setbacks in the Company's  clinical trials
could interrupt,  delay or halt clinical trials and could ultimately prevent its
approval by the FDA or foreign  regulatory  authorities for any and all targeted
indications.  The Company or the FDA may suspend or terminate clinical trials at
anytime  if it is  believed  that the trial  participants  are being  exposed to
unacceptable  health risks.  There can be no assurance that clinical trials will
demonstrate that Thiovir is safe and effective.

                                        8





    There  can  be  no  assurance  that  if  clinical  trials  are  successfully
completed,  the Company will be able to submit a New Drug Application ("NDA") in
a timely  manner or that any such  application  will be approved by the FDA. Any
failure of the Company to complete  successfully  its clinical trials and obtain
approvals of corresponding NDAs would preclude the Company from  commercializing
Thiovir in the United States. See "BUSINESS -- Government Regulation."

INTENSE COMPETITION

    The Company is engaged in a segment of the  pharmaceutical  industry that is
highly competitive and rapidly changing. If successfully developed and approved,
Thiovir  will  compete with several  existing  HIV/AIDS  and CMV  therapies.  In
addition,  other companies are pursuing the development of pharmaceuticals  that
target  HIV/AIDS and/or CMV. The Company  anticipates  that it will face intense
and  increasing  competition  in the future as new products enter the market and
advanced technologies become available.  There can be no assurance that existing
products or new products developed by the Company's competitors will not be more
effective,  or more  effectively  marketed and sold,  than Thiovir.  Competitive
products may render Thiovir  obsolete or  noncompetitive  prior to the Company's
recovery of development or commercialization expenses. The Company's competitors
have  significantly  greater  financial,  technical and human resources than the
Company and may be better equipped to develop,  manufacture and market products.
In addition,  many of these  companies have extensive  experience in preclinical
testing and clinical trials,  obtaining FDA and other  regulatory  approvals and
manufacturing and marketing  pharmaceutical  products. Many of these competitors
also have products that have been approved or are in late-stage  development and
operate large, well-funded research and development programs.  Smaller companies
may also prove to be significant competitors, particularly through collaborative
arrangements with large pharmaceutical and biotechnology companies. Furthermore,
academic institutions, government agencies and other public and private research
organizations are becoming  increasingly  aware of the commercial value of their
inventions and are actively  seeking to  commercialize  the technology they have
developed. Accordingly, the Company's competitors may succeed in commercializing
products  more  rapidly or  effectively  than the  Company,  which  would have a
material  adverse effect on the Company.  See "BUSINESS -- Potential  Market for
Thiovir."

    The  ability of the HIV and CMV viruses to develop  resistance  to drugs has
reduced or eliminated the  effectiveness of a number of existing drugs.  Even if
Thiovir should initially prove effective,  its  effectiveness  and acceptance in
the marketplace  may be reduced by the  development of resistant  strains of the
HIV and CMV viruses.

UNCERTAINTY OF PATENTS; DEPENDENCE ON PATENTS, LICENSES AND PROPRIETARY RIGHTS

    The  Company's  success  will  depend in large  part on the  ability  of the
Company and its licensors to obtain patent  protection  with respect to Thiovir,
defend  patents  once  obtained,  maintain  trade  secrets and  operate  without
infringing  upon the  patents  and  proprietary  rights  of  others  and  obtain
appropriate  licenses to patents or proprietary  rights held by third parties if
infringement  would  otherwise  occur,  both in the United States and in foreign
countries.  The Company has no patents in its own name or patent applications of
its own  pending,  but has  obtained a license to patents and other  proprietary
rights from USC with  respect to Thiovir.  See  "BUSINESS --  Relationship  With
USC."

    The patent  positions of  pharmaceutical  companies,  including those of the
Company, are uncertain and involve complex legal and factual questions for which
important legal  principles are  unresolved.  There can be no assurance that the
Company or its licensor have or will develop or obtain the rights to products or
processes that are  patentable,  that patents will issue from any of the pending
applications or that claims allowed will be sufficient to protect the technology
licensed to the Company. In addition, no assurance can be given that any patents
issued  to or  licensed  by the  Company  will not be  challenged,  invalidated,
infringed or  circumvented,  or that the rights granted  thereunder will provide
competitive advantages to the Company.

    Initial  research  indicates  that  Thiovir may  partially  metabolize  into
another drug, the use of which in the treatment of HIV and related infections is
subject to patents held by a third party,  all of which are  scheduled to expire
in or before 2000. The Company  believes that the use of Thiovir in treatment of
HIV and CMV likely would not infringe on any known third party patent rights, or
that if  infringement  were to occur,  it would not be likely to have a material
adverse effect on the Company. See "BUSINESS -- Patents."

                                       9





    There can be no assurance that the Company is aware of all patents or patent
applications  that may materially  affect the Company's  ability to make, use or
sell Thiovir.  United States patent  applications are confidential while pending
in the United  States  Patent  and  Trademark  Office  (the  "PTO"),  and patent
applications  filed in foreign countries are often first published six months or
more after filing. Any conflicts  resulting from third party patent applications
and patents  could  significantly  reduce the  coverage of the patents or patent
applications licensed to the Company and limit the ability of the Company or its
licensors to obtain meaningful patent protection. If patents are issued to other
companies that contain  competitive or  conflicting  claims,  the Company may be
required to obtain licenses to these patents or to develop or obtain alternative
technology.  There can be no  assurance  that the Company will be able to obtain
any such  license  on  acceptable  terms  or at all.  If such  licenses  are not
obtained,  the  Company  could be  delayed in or  prevented  from  pursuing  the
development or commercialization of Thiovir.

    Litigation which could result in substantial cost to the Company may also be
necessary  to  enforce  any  patents  to which the  Company  has  rights,  or to
determine the scope, validity and unenforceability of other parties' proprietary
rights which may affect the Company's  rights to Thiovir.  United States patents
carry a presumption  of validity and generally can be  invalidated  only through
clear  and  convincing  evidence.  The  Company's  licensors  may  also  have to
participate  in  interference  proceedings  declared by the PTO to determine the
priority of an invention, which could result in substantial cost to the Company.
There can be no assurance  that the  Company's  licensed  patents  would be held
valid by a court or  administrative  body or that an alleged  infringer would be
found to be infringing.  The mere uncertainty resulting from the institution and
continuation of any  technology-related  litigation or  interference  proceeding
could have a material  adverse effect on the Company  pending  resolution of the
disputed matters.

    The  Company  may also rely on  unpatented  trade  secrets  and  know-how to
maintain  its  competitive  position,  which it seeks to  protect,  in part,  by
confidentiality agreements with employees,  consultants and others. There can be
no assurance that these agreements will not be breached or terminated,  that the
Company will have adequate  remedies for any breach, or that the Company's trade
secrets  will not  otherwise  become  known or be  independently  discovered  by
competitors. See "BUSINESS -- Patents."

DEPENDENCE ON AND NEED TO HIRE PERSONNEL

    The Company is  dependent on its senior  management  and  scientific  staff,
which currently  consists of Dr. Francis E. O'Donnell,  Jr.,  Chairman and Chief
Executive  Officer,  Nicholas Jon Virca,  President and Chief Operating Officer,
Mary Anthony Gray,  Executive Vice  President,  and Dr. Charles E. McKenna.  Dr.
McKenna,  who is the inventor of the patents licensed to the Company of the core
technology  for Thiovir and who has  directed  the research on Thiovir at USC to
date, is a consultant  to the Company and only devotes a limited  portion of his
time to the Company's  business.  The services of Dr. O'Donnell,  Mr. Virca, Ms.
Gray,  and Dr. McKenna are important to the Company and the loss of any of their
services may  adversely  affect the Company.  Dr.  O'Donnell is serving as Chief
Executive Officer of the Company on an interim basis.

    To develop and  commercialize  Thiovir,  the Company  must hire and retain a
number of additional highly qualified and experienced  management and scientific
personnel, consultants and advisors. The Company's ability to attract and retain
qualified  personnel  is  critical to the  Company's  success.  Competition  for
qualified  individuals  is  intense,  and the  Company  faces  competition  from
numerous  pharmaceutical  and  biotechnology  companies,  universities and other
research  institutions.  There can be no assurance that the Company will be able
to attract and retain such  individuals  on acceptable  terms or at all, and the
failure  to do so would  have a  material  adverse  effect on the  Company.  See
"MANAGEMENT -- Executive Officers and Directors."

BROAD DISCRETION IN USE OF PROCEEDS

    The net  proceeds of the  Offering  will be added to the  Company's  working
capital and will be available  for general  corporate  purposes,  including  the
Company's  drug  development  program.  As of the date of this  Prospectus,  the
Company cannot  specify with certainty the particular  uses for the net proceeds
to be added to its  working  capital.  Accordingly,  management  will have broad
discretion in the application of the net proceeds. See "USE OF PROCEEDS."

                                       10





RISKS RELATED TO LICENSE AGREEMENT

    The agreement pursuant to which the Company has licensed the core technology
for Thiovir  permits the  Company's  licensor,  USC, to terminate  the agreement
under  certain  circumstances,  such as the  failure  by the  Company to use its
reasonable best efforts to commercialize  Thiovir or the occurrence of any other
uncured material breach by the Company.  The termination of this agreement would
have a material adverse effect on the Company.  The license  agreement  provides
that the licensor is primarily  responsible for obtaining patent  protection for
the technology licensed to the Company, and the Company is required to reimburse
it for the costs it incurs in performing these activities.  The Company believes
that these costs will be  substantial.  The license  agreement also requires the
Company to pay minimum  royalties which start at $12,500 in 1998 and increase to
$125,000  in 2001 and each year  thereafter.  Any  inability  or  failure of the
Company  to pay these  costs  could  result in the  termination  of the  license
agreement.  In  addition,  the license  agreement  reserves for the licensor the
right to approve sublicenses granted under the license agreement.  Although such
approval  may not be  unreasonably  withheld,  the need for  such  approval  may
inhibit the Company's development of strategic  relationships  necessary for the
commercialization  of Thiovir.  See "BUSINESS -- Research and Development Status
and Activities" and " -- Relationship with USC."

LACK OF MANUFACTURING CAPABILITIES

    The Company does not have any manufacturing  capacity and currently plans to
seek  to  establish   relationships  with  third  party  manufacturers  for  the
manufacture of clinical trial material and the commercial production of Thiovir,
if any.  There can be no  assurance  that the Company  will be able to establish
relationships with third party manufacturers on commercially acceptable terms or
that  third  party  manufacturers  will  be  able to  manufacture  Thiovir  on a
cost-effective basis in commercial quantities under good manufacturing practices
("GMPs")  mandated by the FDA. The Company's  dependence  upon third parties for
the  manufacture  of its  products may  adversely  affect the  Company's  profit
margins  and its ability to develop  and  commercialize  Thiovir on a timely and
competitive  basis.  Further,  there can be no assurance that  manufacturing  or
quality  control  problems will not arise in connection  with the manufacture of
the  Company's  products  or  that  third  party  manufacturers  will be able to
maintain  the  necessary   governmental   licenses  and  approvals  to  continue
manufacturing  the Company's  products.  Any failure to establish  relationships
with third parties for its manufacturing requirements on commercially acceptable
terms would have a material  adverse  effect on the  Company.  See  "BUSINESS --
Manufacturing."

LACK OF SALES AND MARKETING CAPABILITIES

    The Company currently has no marketing or sales personnel.  The Company will
have  to  develop  a  sales  force  or  rely  on  marketing  partners  or  other
arrangements  with third  parties for the  marketing,  distribution  and sale of
Thiovir.  There can be no  assurance  that the Company will be able to establish
marketing,  distribution or sales  capabilities or make  arrangements with third
parties to perform those  activities on terms  satisfactory  to the Company,  or
that  any   internal   capabilities   or  third  party   arrangements   will  be
cost-effective.

    In addition, any third parties with which the Company establishes marketing,
distribution or sales  arrangements may have significant  control over important
aspects of the  commercialization of Thiovir,  including market  identification,
marketing  methods,   pricing,   composition  of  sales  force  and  promotional
activities.  There can be no assurance  that the Company will be able to control
the  amount  and  timing of  resources  that any third  party may  devote to the
Company's  products  or  prevent  any  third  party  from  pursuing  alternative
technologies  or products that could result in the  development of products that
compete with Thiovir and the withdrawal of support for Thiovir. See "BUSINESS --
Sales and Marketing."

DEPENDENCE ON THIRD PARTIES FOR DEVELOPMENT AND MANUFACTURING

    The Company intends to engage consultants and independent  contract research
organizations  ("CROs") to design and conduct clinical trials in connection with
the  development  of  Thiovir.  The  Company  will also  engage a third party to
manufacture  Thiovir.  As a result,  these  important  aspects of the  Company's
business will be outside the direct control of the Company.  In addition,  there
can  be no  assurance  that  such  third  parties  will  perform  all  of  their
obligations  under  arrangements  with the Company.  See "BUSINESS -- Government
Regulation,"  "--  Research  and  Development  Status and  Activities,"  and "--
Manufacturing."

                                       11






NO ASSURANCE OF MARKET ACCEPTANCE

    The Company's success will depend in substantial part on the extent to which
Thiovir achieves market acceptance.  The degree of market acceptance will depend
upon a number  of  factors,  including  the  receipt  and  scope  of  regulatory
approvals,  the  establishment and demonstration in the medical community of the
safety and  efficacy  of Thiovir  and its  potential  advantages  over  existing
treatment  methods,  and  reimbursement  policies of government  and third party
payors.  There can no be  assurance  that  physicians,  patients,  payors or the
medical community in general will accept or utilize Thiovir.

UNCERTAINTY OF HEALTH CARE REFORM MEASURES AND THIRD PARTY REIMBURSEMENT

    The  business  and  financial  condition of  pharmaceutical  companies  will
continue to be affected by the efforts of governments  and third party payors to
contain  or  reduce  the cost of  health  care.  A  number  of  legislative  and
regulatory proposals aimed at changing the health care system have been proposed
in recent years.  In addition,  an emphasis on managed care in the United States
has  increased  and will  continue to increase  the  pressure on  pharmaceutical
pricing.  While the Company  cannot  predict  whether  legislative or regulatory
proposals will be adopted or the effect those  proposals or managed care efforts
may have on its business,  the announcement and/or adoption of such proposals or
efforts  could  have a material  adverse  effect on the  Company.  In the United
States and elsewhere,  sales of  prescription  pharmaceuticals  are dependent in
part on the  availability  of  reimbursement  to the  consumer  from third party
payors,   such  as  government   and  private   insurance   plans  that  mandate
predetermined  discounts from list prices.  Third party payors are  increasingly
challenging the prices charged for medical products and services. If the Company
succeeds in bringing  Thiovir to the market,  there can be no assurance  that it
will be considered cost effective or that  reimbursement to the consumer will be
available or will be  sufficient  to allow the Company to sell its products on a
competitive  basis. See "BUSINESS -- Health Care Reform Measures and Third Party
Reimbursement."

ABSENCE OF PRODUCT LIABILITY INSURANCE; INSURANCE RISKS

    The Company's  business will expose it to potential  product liability risks
that are inherent in the testing,  manufacturing and marketing of pharmaceutical
products.  There can be no assurance that product  liability  claims will not be
asserted  against the Company.  The Company does not currently  have any product
liability  insurance.  The Company intends to obtain limited  product  liability
insurance  for its clinical  trials when they begin in the United  States and to
expand  its  insurance  coverage  if  and  when  the  Company  begins  marketing
commercial products. However, there can no be assurance that the Company will be
able to obtain product liability  insurance on commercially  acceptable terms or
that the Company will be able to maintain such insurance at a reasonable cost or
in  sufficient  amounts to protect  the  Company  against  potential  losses.  A
successful  product  liability  claim or series of claims  brought  against  the
Company could have a material adverse effect on the Company.

HAZARDOUS MATERIALS

    In the event the Company  should  establish its own  laboratory  facility to
further its drug development  program,  such activities will necessarily involve
the use of hazardous materials, chemicals and viruses. Although the Company will
develop  procedures  for the handling and disposing of such  materials to comply
with the  standards  prescribed  by state and federal  regulations,  the risk of
accidental  contamination  or injury from these  materials  cannot be completely
eliminated.  In the event of such an accident,  the Company could be held liable
for any damages or fines that  result and any such  liability  could  exceed the
resources of the Company.

CONCENTRATION OF STOCK OWNERSHIP; CONTROL OF MANAGEMENT AND EXISTING 
STOCKHOLDERS

    Upon  completion  of  the  Offering,  the  Company's  directors,   executive
officers,  other key personnel and their respective affiliates will beneficially
own approximately 21.3% of the outstanding Common Stock  (approximately 20.4% if
the Underwriters' over-allotment option is exercised in

                                       12






full).  As a result,  these  stockholders  will be able to exercise  significant
influence  over  all  matters  requiring  stockholder  approval,  including  the
election of directors and approval of significant corporate  transactions.  Such
concentration  of ownership may also have the effect of delaying or preventing a
change in control of the Company that may be favored by other stockholders.  See
"PRINCIPAL  STOCKHOLDERS"  and  "DESCRIPTION  OF  SECURITIES -- Delaware Law and
Certain Certificate of Incorporation and Bylaw Provisions."

RELATED PARTY TRANSACTIONS

    The Company has entered  into  certain  transactions  with  parties who were
stockholders  of the Company at the time of the  transactions.  A summary of the
terms and  conditions  of these  transactions  may be found  under  the  heading
"CERTAIN  RELATIONSHIPS AND RELATED  TRANSACTIONS."  These transactions  involve
inherent  conflicts between the interest of the Company and the interests of the
other parties to the transactions.

SUBSTANTIAL SHARES OF COMMON STOCK RESERVED FOR THE EXERCISE OF OPTIONS
AND WARRANTS; OBLIGATIONS PURSUANT TO REGISTRATION RIGHTS

   
    The Company has reserved  500,000  shares of Common Stock for issuance  upon
the exercise of options  granted or available for grant to employees,  officers,
directors,  advisors and  consultants  pursuant to the Company's Stock Incentive
Plan (the  "Incentive  Plan"),  as well as an aggregate  of 1,900,000  shares of
Common Stock for issuance upon  exercise of the (i)  Redeemable  Warrants,  (ii)
Representatives'  Warrants and (iii)  Outstanding  Warrants.  These  options and
warrants may adversely  affect the Company's  ability to obtain financing in the
future.  The holders of such  options and  warrants  can be expected to exercise
them at a time when the Company  would  otherwise  be able to obtain  additional
equity capital on terms more favorable to the Company.  See  "UNDERWRITING"  and
"CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS."

    The Company has agreed that, under certain  circumstances,  it will register
under  federal  and  state   securities  laws  the  securities   underlying  the
Representatives'   Warrants.  In  addition,   certain  shares  of  Common  Stock
previously  issued by the Company are subject to registration  rights granted by
the  Company  in  connection  with the  private  placement  of such  securities.
Exercise of these registration  rights could involve  substantial expense to the
Company at a time when it could not afford such  expenditures  and may adversely
affect the terms upon which the Company  may obtain  additional  financing.  See
"DESCRIPTION OF SECURITIES -- Common Stock."
    

POTENTIAL ADVERSE MARKET IMPACT OF SHARES ELIGIBLE FOR FUTURE SALES;
REGISTRATION RIGHTS

   
    Sales of a substantial number of shares of Common Stock in the public market
following  the Offering  could  adversely  affect the market price of the Common
Stock. Holders of approximately  2,343,440 shares of Common Stock (including the
shares issuable upon the exercise of the  Outstanding  Warrants) are entitled to
include,  subject to certain  limitations,  such shares in certain  registration
statements  which the Company may use to  register  additional  shares of Common
Stock.  In addition,  2,643,440  shares will be eligible for resale,  subject to
applicable  holding  periods,  in the public  market  under Rule 144 or Rule 701
under the Securities Act,  beginning 90 days after the date of this  Prospectus.
1,950,000 shares held by the directors,  officers and certain other stockholders
of the Company are subject to agreements which restrict their sale for 12 months
after the date of this  Prospectus  without  the prior  written  consent  of the
Representatives.  See "UNDERWRITING." The Company intends to file a registration
statement under the Act to register  500,000 shares of Common Stock reserved for
issuance under the Incentive  Plan. The Company is unable to estimate the number
of shares  which may  actually be sold under Rule 144 or Rule 701 or pursuant to
registration rights, since this will depend upon the market price for the Common
Stock, the individual  circumstances of the sellers and other factors.  Any such
sales  may have an  adverse  effect on the  Company's  ability  to raise  needed
capital through an offering of its equity or convertible debt securities and may
adversely  affect  the  prevailing   market  price  of  the  Common  Stock.  See
"DESCRIPTION OF SECURITIES -- Common Stock."
    

                                       13





POTENTIAL ADVERSE EFFECT OF REDEMPTION OF REDEEMABLE WARRANTS; REQUIREMENT FOR 
QUALIFICATION OF SHARES AND CURRENT PROSPECTUS TO EXERCISE REDEEMABLE WARRANTS

    The  Redeemable  Warrants  may be  redeemed by the Company at any time after
thirteen  months  from the date  hereof at a price of $.20 per  Warrant  upon 30
days' prior  written  notice,  provided  that the closing  trading  price of the
Common Stock for the 20 consecutive  trading day period ending ten days prior to
the giving of notice of redemption, equals or exceeds $9.00 per share. Notice of
redemption of the  Redeemable  Warrants  could force the holders to exercise the
Redeemable  Warrants at a time when it might be disadvantageous  for the holders
to do so or to sell the  Redeemable  Warrants at their then current market price
when  the  holders  might  otherwise  wish to hold  the  Warrants  for  possible
appreciation.  Alternatively, the holders may accept the redemption price, which
is  likely to be  substantially  less than the  market  value of the  Redeemable
Warrants  at the time of  redemption.  Any  holders  who do not  exercise  their
Redeemable  Warrants  prior to  their  redemption,  will  forfeit  the  right to
purchase the shares of Common Stock underlying the Redeemable Warrants.  Holders
of the  Redeemable  Warrants  will have the right to  exercise  them to purchase
shares of Common Stock only if a current  prospectus  relating to such shares is
then in  effect  and  only if the  shares  are  qualified  for  sale  under  the
securities laws of the state or states in which the holder resides. Although the
Company  intends to seek to qualify the shares of Common  Stock  underlying  the
Redeemable Warrants for sale in those states in which they are to be offered, no
assurance  can be given  that such  qualification  will  occur.  The  Redeemable
Warrants  may be  deprived  of any value if a current  prospectus  covering  the
shares issuable upon the exercise  thereof is not filed and kept effective or if
such  underlying  shares are not,  or cannot  be,  qualified  in the  applicable
states.  While the Company may legally be permitted to give notice to redeem the
Redeemable  Warrants  at a time  when a  current  prospectus  is not  available,
thereby leaving the Redeemable  Warrant holders no opportunity to exercise their
Redeemable  Warrants prior to redemption,  the Company does not intend to redeem
the Redeemable  Warrants unless a current prospectus is available at the time of
redemption. See "DESCRIPTION OF SECURITIES -- Redeemable Warrants."

   
REPRESENTATIVES' WARRANTS AND ONGOING RELATIONSHIP WITH SCHNEIDER

    In   connection   with  the   Offering,   the  Company   will  sell  to  the
Representatives the  Representatives'  Warrants to purchase up to 100,000 shares
of Common  Stock and  100,000  Redeemable  Warrants  for a nominal  amount.  The
Representatives' Warrants will be exercisable commencing on the date that is one
year  from  the  effective  date of this  Prospectus  and  will  continue  to be
exercisable  up to the  date  that is five  years  from the  date  hereof  at an
exercise  price  equaling 160% of the public  offering price of the Common Stock
and  the   Redeemable   Warrants,   respectively.   During   the   term  of  the
Representatives'  Warrants, the holders thereof will be given the opportunity to
profit  from a rise in the  market  price  of the  Common  Stock  or  Redeemable
Warrants  with a resulting  dilution  in the  interest  of the  Company's  other
stockholders.  The terms on which the Company  could obtain  additional  capital
during  the life of the  Representatives'  Warrants  may be  adversely  affected
because  the  holders of the  Representatives'  Warrants  might be  expected  to
exercise them if the Company were able to obtain any needed  additional  capital
in a new offering of securities  at a price  greater than the exercise  price of
the  Representatives'  Warrants.  The Company has also entered into a consulting
agreement with Schneider under which  Schneider will provide  certain  financial
consulting  services to the Company for a period of 36 months at a total cost of
$108,000,  all of which will be prepaid upon  completion  of the  Offering.  See
"DESCRIPTION OF SECURITIES -- Representatives' Warrants."

    Upon the exercise of the  Redeemable  Warrants  more than one year after the
date of this Prospectus,  and to the extent not inconsistent with the guidelines
of the National  Association  of  Securities  Dealers,  Inc.,  and the rules and
regulations   promulgated  by  the  Securities  and  Exchange   Commission  (the
"Commission"),  the Company has agreed to pay the  Representatives  a commission
equal to five percent of the exercise price of the Redeemable Warrants. However,
no  compensation  will be paid to the  Representatives  in  connection  with the
exercise of the  Redeemable  Warrants if (a) the market price of the  underlying
shares of Common  Stock is lower than the  exercise  price,  (b) the  Redeemable
Warrants are  exercised in an  unsolicited  transaction,  or (c) the  Redeemable
Warrants
    

                                       14






   
subject  to  the  Representatives'   Warrant  are  exercised.  In  addition,  in
connection with any solicitation by the  Representatives  after the date of this
Prospectus of Redeemable Warrant  exercises,  unless granted an exemption by the
Commission   from   Regulation  M  promulgated   under  the  Exchange  Act,  the
Representatives  and any other soliciting  broker-dealer will be prohibited from
engaging  in  any  market  making  activities  with  respect  to  the  Company's
securities for the period  commencing  either one or five business days prior to
any  solicitation of the exercise of Redeemable  Warrants until the later of (i)
the termination of such solicitation activity or (ii) the termination (by waiver
or otherwise)  of any right which the  Representatives  or any other  soliciting
broker-dealer may have to receive a fee for the exercise of Redeemable  Warrants
following  such  solicitation.  As a result,  the  Representatives  or any other
soliciting  broker-dealer  may be unable to provide a market  for the  Company's
securities,  should  it  desire  to do so,  during  certain  periods  while  the
Redeemable Warrants are exercisable. See "UNDERWRITING."
    

NO PRIOR MARKET FOR COMMON STOCK AND THE REDEEMABLE WARRANTS

    Prior to the Offering,  there has been no public market for the Common Stock
or the Redeemable Warrants, and there can be no assurance that an active trading
market will develop or be sustained after the Offering or that investors will be
able to sell the Common Stock or the Redeemable  Warrants  should they desire to
do so. The initial public offering price was determined by negotiations  between
the Company and the Representatives and may bear no relationship to the price at
which the Common Stock or the Redeemable  Warrants will trade upon completion of
the Offering. See "UNDERWRITING."

VOLATILITY OF STOCK PRICE

    The market price of the Common Stock and the  Redeemable  Warrants is likely
to be highly  volatile and could be subject to wide  fluctuations in response to
factors  concerning the Company or its competitors  such as announcements of the
results of clinical trials,  developments with respect to patents or proprietary
rights,   announcements  of  technological  innovations,  new  products  or  new
contracts, actual or anticipated variations in operating results due to a number
of factors including,  among others, the level of development expenses,  changes
in financial  estimates by  securities  analysts,  conditions  and trends in the
pharmaceutical  and  other  industries,  adoption  of new  accounting  standards
affecting  the  industry,  general  market  conditions  and other  factors.  The
Company's  operating  results  may  also be below  the  expectations  of  market
analysts and investors, which would likely have a material adverse effect on the
prevailing market price of the Common Stock or the Redeemable Warrants.

    Further,   the  stock  market  has  experienced  extreme  price  and  volume
fluctuations  that  have  particularly  affected  the  market  prices  of equity
securities of many pharmaceutical companies. These price fluctuations often have
been  unrelated  or  disproportionate  to  the  operating  performance  of  such
companies.  Market  fluctuations,  as well as general  economic,  political  and
market conditions such as recessions or international currency fluctuations, may
adversely  affect  the  market  price  of the  Common  Stock  or the  Redeemable
Warrants.  In the past,  following  periods of volatility in the market price of
the securities of companies in the  pharmaceutical  industry,  securities  class
action  litigation  has often been  instituted  against  those  companies.  Such
litigation, if instituted against the Company, could result in substantial costs
and a  diversion  of  management  attention  and  resources,  which would have a
material  adverse  effect on the Company.  The  realization  of any of the risks
described in these "RISK  FACTORS"  could have a dramatic and adverse  impact on
the market price of the Common Stock or the Redeemable Warrants.

IMMEDIATE AND SUBSTANTIAL DILUTION -- POTENTIALLY 80%

    Purchasers  of the Common Stock in the Offering  will suffer  immediate  and
substantial  dilution of $3.90 per share in the net  tangible  book value of the
Common  Stock  from the  initial  public  offering  price.  To the  extent  that
outstanding  options and  warrants to purchase  the  Company's  Common Stock are
exercised, there will be further dilution. See "DILUTION."

                                       15






NO DIVIDENDS

    The Company has never  declared  or paid any cash  dividends  on its capital
stock.  The Company  currently  does not intend to pay any cash dividends in the
foreseeable future and intends to retain its earnings, if any, for the operation
of its business. See "DIVIDEND POLICY."

ARBITRARY DETERMINATION OF OFFERING PRICE

    The  offering  price of the shares of Common Stock and  Redeemable  Warrants
will  be   determined   through   negotiations   between  the  Company  and  the
Representatives. Among the factors to be considered in determining the price are
prevailing market conditions, the general economic environment, estimates of the
prospects of the Company, the background and capital contributions of management
and current  conditions in the  securities  market and the  Company's  industry.
There is, however,  no relationship  between the offering price of the shares of
Common Stock and  Redeemable  Warrants  and the  Company's  assets,  book value,
historical   earnings   or  any  other   objective   criteria   of  value.   See
"UNDERWRITING."

ANTI-TAKEOVER EFFECTS OF CERTIFICATE OF INCORPORATION, BYLAWS AND DELAWARE LAW

   
    The Company's Certificate of Incorporation authorizes the Company's Board of
Directors (the "Board") to issue shares of undesignated  preferred stock without
stockholder approval on such terms as the Board may determine. The rights of the
holders of Common  Stock will be subject to, and may be  adversely  affected by,
the rights of the holders of any such preferred  stock that may be issued in the
future. Moreover, the issuance of preferred stock may make it more difficult for
a third party to acquire,  or may  discourage  a third party from  acquiring,  a
majority of the voting stock of the Company,  which could make more  difficult a
merger or tender  offer  involving  the  Company,  even if such events  could be
beneficial  to the interest of the  stockholders.  The Board's  ability to issue
preferred stock could limit the price that certain investors might be willing to
pay in the  future for the Common  Stock.  See  "DESCRIPTION  OF  SECURITIES  --
Preferred  Stock" and "-- Delaware Law and Certain  Certificate of Incorporation
and Bylaw Provisions."
    

LIMITATION ON OFFICERS' AND DIRECTORS' LIABILITIES UNDER DELAWARE LAW

    Pursuant to the Company's Certificate of Incorporation,  as authorized under
applicable  Delaware  law,  directors of the Company are not liable for monetary
damages for breach of fiduciary duty,  except in connection with a breach of the
duty of  loyalty,  for acts or  omissions  not in good  faith  or which  involve
intentional  misconduct or a knowing  violation of law, for dividend payments or
stock  repurchases  illegal under Delaware law or for any transaction in which a
director has derived an improper personal benefit. The Company's  Certificate of
Incorporation  provides  that  the  Company  must  indemnify  its  officers  and
directors  to the fullest  extent  permitted  by Delaware  law for all  expenses
incurred in the  settlement  of any actions  against such persons in  connection
with  their  having  served  as  officers  or  directors  of the  Company.  Upon
completion   of  the   Offering,   the  Company   also  intends  to  enter  into
indemnification  agreements with its directors which will require the Company to
provide certain  additional  indemnification  and contribution to its directors,
subject to certain  limitations.  See "MANAGEMENT -- Limitation on Officers' and
Directors' Liabilities."

MAINTENANCE REQUIREMENTS FOR NASDAQ SMALLCAP SECURITIES

    It is anticipated that the Common Stock and the Redeemable  Warrants will be
approved for listing on the Nasdaq SmallCap Market.  An issuer seeking continued
inclusion of its  securities on the SmallCap  Market is required to meet certain
criteria  including  (i) total assets of at least  $2,000,000;  (ii) capital and
surplus of at least $1,000,000; and (iii) a minimum bid price of $1.00 per share
unless the market value of its public float is at least $1,000,000 and it has at
least  $2,000,000 in capital and surplus.  Upon completion of the Offering,  the
Company anticipates that it will satisfy the criteria for continued inclusion of
its securities on the Nasdaq SmallCap Market. However, there can be no assurance
that the Company will  continue to satisfy such  criteria and for how long.  See
"PROSPECTUS SUMMARY -- Summary Financial  Information" and "CAPITALIZATION." The
Nasdaq   SmallCap   Market  has  recently   proposed   changes  to  its  listing
requirements. If the Company became

                                       16






unable to meet such criteria of the SmallCap Market and was suspended therefrom,
the  Company's  securities  could be subject to a rule that  imposes  additional
sales practice  requirements on certain  broker/dealers who sell such securities
to  persons  other  than   established   customers  and  accredited   investors.
Consequently,  an investor would likely find it more difficult to dispose of, or
to obtain accurate quotations as to the value of, the Securities.

REQUIRED DISCLOSURE CONCERNING TRADING OF PENNY STOCKS OR LOW-PRICED SECURITIES

   
    The Commission has adopted regulations that define a "penny stock" to be any
equity security that has a market price (as defined  therein) of less than $5.00
per share, subject to certain exceptions.  For any transaction involving a penny
stock, unless exempt, the rules require the delivery,  prior to the transaction,
of a disclosure  schedule prepared by the Commission relating to the penny stock
market. The broker-dealer also must disclose the commissions payable to both the
broker-dealer  and the  registered  representative,  current  quotations for the
securities  and,  if the  broker-dealer  is the sole  market-maker  of the penny
stock,  the  broker-dealer  must  disclose  this  fact  and the  broker-dealer's
presumed  control  over the market.  Finally,  monthly  statements  must be sent
disclosing  recent price information for the penny stock held in the account and
information on the limited market in penny stocks.
    

    While many securities  listed on the Nasdaq SmallCap Market would be covered
by the  definition  of penny  stock,  transactions  in such a security  would be
exempt  from all but the sole  market-maker  provision  for (i) issuers who have
$2,000,000  in  tangible  assets  ($5,000,000  if the  issuer  has  not  been in
continuous  operation for three years),  (ii) transactions in which the customer
is an institutional  accredited  investor,  and (iii)  transactions that are not
recommended  by the  broker-dealer.  In  addition,  transactions  in a  SmallCap
security  directly  with a  Nasdaq  market-maker  for such  securities  would be
subject  only to the  sole  market-maker  disclosure,  and the  disclosure  with
respect  to  commissions  to be paid  to the  broker-dealer  and the  registered
representative.  Finally,  all SmallCap securities would be exempt if The Nasdaq
Stock  Market,  Inc.,  the operator of the Nasdaq  SmallCap  Market,  raised its
requirements for continued  listing so that any issuer with less than $2,000,000
in net tangible  assets or  stockholders'  equity would be subject to delisting.
These  criteria are more stringent  than the current  maintenance  requirements.
Consequently, these rules may restrict the ability of broker-dealers to sell the
Company's  securities  and may affect  the  ability  of  purchasers  to sell the
Company's securities in the secondary market.

                SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

    Statements  herein  regarding the time period during which the proceeds from
the  Offering  will  fund the  Company's  operations  and the dates on which the
Company   anticipates   commencing  clinical  trials  with  respect  to  Thiovir
constitute  forward-looking  statements under the federal  securities laws. Such
statements are subject to certain risks and  uncertainties  that could cause the
rate at which the  Company  incurs  expenses  and the actual  timing of clinical
trials to differ  materially from those  projected.  With respect to such dates,
the Company's  management  team has made certain  assumptions  regarding,  among
other things,  the successful and timely  completion of preclinical  tests,  the
approval  of an  Investigational  New Drug  Exemption  Application  ("IND")  for
Thiovir by the FDA, the availability of adequate clinical supplies,  the absence
of delays in patient  enrollment,  the  availability  of the  capital  resources
necessary to complete the preclinical tests and conduct the clinical trials, the
nature,  scope, and number of the preclinical tests and clinical trials required
for FDA  approval  and the  cost of  completing  these  tests  and  trials.  The
Company's  ability to proceed with its drug  development  program in  accordance
with the dates  anticipated is subject to certain risks,  as discussed under the
caption "RISK FACTORS"  contained herein,  and the Company's ability to estimate
the time period for which the proceeds of the Offering  will fund the  Company's
operations is subject to  substantial  uncertainty  due to the factors  outlined
under the caption "USE OF PROCEEDS" contained herein.  Undue reliance should not
be placed on the dates and time periods referenced  herein.  These estimates are
based on the current  expectations of the Company's  management  team, which may
change in the  future  due to a large  number  of  potential  events,  including
unanticipated future developments.

                                       17






                                 USE OF PROCEEDS

   
    The net  proceeds to the  Company  from the sale of the  Securities  offered
hereby are estimated to be approximately $4,140,000 (approximately $4,805,550 if
the Underwriters'  over-allotment  option is exercised in full), after deducting
$510,000 for underwriting discounts (approximately $586,500 if the Underwriters'
over-allotment option is exercised in full) and approximately $450,000 for other
estimated  offering  expenses   (approximately  $472,950  if  the  Underwriters'
over-allotment  option is exercised  in full),  including  the  Representatives'
non-accountable  expense  allowance  and  the  consulting  fee  payable  to  the
Representatives,  and assuming no exercise of the  Redeemable  Warrants  offered
hereby.
    

    The Company intends to use the net proceeds from the Offering, including any
interest thereon, to finance research and development activities with respect to
Thiovir, primarily for preclinical tests and clinical trials designed to satisfy
FDA standards for safety and efficacy,  and to provide working  capital.  Due to
the nature of the drug development and approval  process,  the Company is unable
to  accurately  indicate the exact  amount of proceeds  allocable to each of the
Company's  activities.  The amounts actually expended for each activity may vary
significantly  depending  upon  numerous  factors,  including  the  progress  of
development  activities,  the scope  and  results  of  preclinical  testing  and
clinical  trials,  the cost,  timing and outcome of regulatory  agency  reviews,
administrative  and legal expenses,  costs of developing a patent position,  the
acquisition  of  technology  that may  enhance  and/or  be  compatible  with the
Company's then existing  technology,  the  establishment of  relationships  with
consultants  and with third  parties for  manufacturing  and sales and marketing
functions,  and on other  factors.  Commencing in 1998, the Company will also be
required  to make  minimum  royalty  payments  in  accordance  with the  license
agreement under which it licenses  rights to the drug Thiovir,  in the following
amounts: $12,500 in 1998, $25,000 in 1999, $50,000 in 2000 and $125,000 per year
thereafter.

    Notwithstanding  the foregoing,  however,  the information below constitutes
the  Company's  best estimate as to the use of the proceeds  generated  from the
Offering:

<TABLE>
<CAPTION>

                          ACTIVITY                             % OF PROCEEDS
                          ---------                            --------------
<S>                                                               <C>
Testing and Clinical Trials ..................................          50
CROs and Consultants .........................................          20
General Working Capital ......................................          30
</TABLE>

    Any  net  proceeds   received   from  the  exercise  of  the   Underwriters'
over-allotment option will be used to supplement general working capital.

    The Company  believes  that the  estimated  net  proceeds  of the  Offering,
together with its existing cash and short-term investments,  will be adequate to
satisfy its anticipated capital requirements at least through December 31, 1998.
See "RISK FACTORS -- Future  Capital Needs;  Uncertainty of Additional  Funding"
and "SPECIAL NOTE REGARDING FORWARD-LOOKING  STATEMENTS." Pending such uses, the
Company intends to invest  proceeds  primarily in short-term,  investment  grade
obligations.

                                 DIVIDEND POLICY

    The Company has not declared or paid any dividends on its capital stock. The
Company  currently  intends to retain all future  earnings,  if any,  to finance
growth  and  development  of its  business  and,  therefore,  does not expect to
declare or pay any cash dividends in the foreseeable  future. The declaration of
dividends is within the discretion of the Company's  Board. See "RISK FACTORS --
No Dividends."

                                       18






                                    DILUTION

    At  February  28,  1997,  the net  tangible  book value of the  Company  was
$220,814,  or approximately  $.08 per share. "Net tangible book value" per share
of Common Stock  represents the amount of the Company's  total tangible  assets,
less the  amount of its total  liabilities,  divided  by the number of shares of
Common Stock outstanding.  Dilution represents the difference between the amount
per share of Common Stock paid by the new  investors  purchasing in the Offering
and the pro forma net  tangible  book value per share of Common  Stock after the
Offering. After giving effect to the sale by the Company of the 1,000,000 shares
of Common  Stock  offered  hereby at  $5.10(1)  per share and the payment of the
estimated  expenses  related  to the  Offering  of  $450,000,  the pro forma net
tangible  book  value of the  Company  at  February,  28 1997  would  have  been
$4,360,214,  or $1.20 per share of Common  Stock.  This  represents an immediate
increase  in net  tangible  book  value of $1.12 per  share of  Common  Stock to
existing  stockholders  and an  immediate  dilution of $3.90 per share of Common
Stock to new investors  purchasing Common Stock in the Offering,  as illustrated
in the following table:

<TABLE>
<CAPTION>

<S>                                                                    <C>          <C>          
     Price per share in the Offering(1)                                                $   5.10
        Net tangible book value per share before the  Offering              .08
        Increase per share attributable to new investors                   1.12
                                                                       ----------
     Pro forma net tangible book value per share after the Offering                        1.20
                                                                                        -------
     Dilution to new investors                                                         $   3.90
                                                                                     ==========
</TABLE>

- ----------
(1) Includes the purchase price of $.10 per Redeemable Warrant.

    In the event that the  Underwriters  exercise the  over-allotment  option in
full,  the pro forma net tangible book value per share of Common Stock after the
Offering (less underwriting  commissions and discounts and estimated expenses of
the Offering) would be approximately $1.33 per share,  representing an immediate
increase in net tangible book value of approximately  $1.25 per share to current
stockholders and an immediate  dilution of approximately  $3.77 per share to new
investors.

    The  following  table sets  forth (i) the  number of shares of Common  Stock
purchased  from  the  Company  by  the  existing   stockholders  and  the  total
consideration  paid and the average  price per share paid for such shares by the
existing  stockholders  and (ii) the number of shares of Common Stock to be sold
by the  Company  in the  Offering,  the total  consideration  to be paid and the
average price per share:

<TABLE>
<CAPTION>

                            
                              SHARES PURCHASED            TOTAL CONSIDERATION 
                              ---------------              ----------------        AVERAGE PRICE
                            NUMBER       PERCENTAGE      AMOUNT      PERCENTAGE      PER SHARE
                          ----------     ----------     --------    ------------     ----------
<S>                       <C>            <C>           <C>          <C>              <C>
New Investors             1,000,000         27.4%      $5,000,000(2)     80.5%         $5.00
Existing Stockholders     2,643,440         72.6%      $1,210,654        19.5%         $0.46(3)(4)
                         ------------   -----------   -----------    -----------
Total                     3,643,440        100.0%      $6,210,654       100.0%
                         ============   ===========   ===========    ===========
</TABLE>

- ---------------
(2) Prior to the deduction of expenses relating to the Offering.
(3) Excludes  $1,519,050,  representing  the excess of the fair value of 950,000
    shares  issued (in August  1996) over cash  received  of $950,  recorded  as
    research  and  development  expense.  See Note 5 of  Notes to the  Financial
    Statements hereto.
(4) Includes  1,950,000 shares of Common Stock previously sold for an average of
    $.05 per share and 693,440 shares of Common Stock  previously sold for $1.60
    per share.

    The foregoing table excludes shares of Common Stock issuable pursuant to the
exercise of the Outstanding Warrants,  none of which are currently  exercisable.
As of April 24, 1997,  warrants to purchase an  aggregate  of 700,000  shares of
Common  Stock at a price of $10.00  per share  were  outstanding.  None of these
warrants are currently  exercisable.  The table also  excludes  shares of Common
Stock  issuable  upon the exercise of up to 500,000  stock  options which may be
issued under the Company's Incentive Plan. As of April 24, 1997, the Company had
issued  options  to  purchase  an  aggregate  of 10,000  shares of Common  Stock
pursuant  to the  Incentive  Plan and had  made  commitments  to  three  outside
directors  and two officers to issue options to purchase an aggregate of 230,000
shares of Common Stock at exercise prices to be determined,  but in any case not
less than $5.00 per share.  See "MANAGEMENT -- Executive  Compensation and Other
Information."

                                       19






                                 CAPITALIZATION

    The following table sets forth the actual  capitalization  of the Company at
February 28, 1997, and the  capitalization of the Company as adjusted to reflect
the  sale by the  Company  of the  Securities  offered  hereby  and the  initial
application of the estimated proceeds thereof. See "USE OF PROCEEDS." This table
should be read in conjunction  with the Company's  Financial  Statements and the
Notes thereto included elsewhere herein.

<TABLE>
<CAPTION>

                                                                  FEBRUARY 28, 1997
                                                                 -------------------
                                                                ACTUAL       AS ADJUSTED
                                                             ------------    -----------
Stockholders' equity:

<S>                                                         <C>             <C>
  Preferred stock -- $0.01 par value; 1,000,000 shares 
   authorized, actual and as adjusted -- 0 shares issued
   and outstanding                                           $         --   $         --

  Common Stock -- $0.01 par value; 25,000,000 shares 
   authorized, actual shares issued and outstanding 
   2,643,440 and as adjusted 3,643,440                             26,434         36,434

  Additional paid-in capital                                    2,644,743      6,774,743

  Deficit accumulated during the development stage             (2,227,784)    (2,227,784)
                                                             ------------    -----------
     Total stockholders' equity                                   443,393      4,583,393
                                                             ------------    -----------
Total capitalization                                        $     443,393   $  4,583,393
                                                            =============   ============
                                                            
</TABLE>

                                       20






                             SELECTED FINANCIAL DATA

    The  following  selected  financial  data of the  Company  as of and for the
period ended  November 30, 1996 are derived from the financial  statements  that
have  been  audited  by  McGladrey  & Pullen,  LLP,  independent  auditors.  The
Company's  financial  statements for the three months and the cumulative  period
ended February 28, 1997 are unaudited.  However,  in the opinion of the Company,
all adjustments,  consisting of normal recurring accruals,  necessary for a fair
presentation  have been made.  Interim results are not indicative of the results
to be expected for a full fiscal year.  These data should be read in conjunction
with the Company's Financial Statements and the Notes thereto included elsewhere
in this  Prospectus  and  Management's  Discussion  and  Analysis  of  Financial
Condition and Results of Operations which follow.

STATEMENT OF ACTIVITIES DATA:

<TABLE>
<CAPTION>

                                            PERIOD FROM JULY 5, 1996,        THREE MONTHS       PERIOD FROM JULY 5, 1996,
                                              DATE OF INCEPTION, TO             ENDED             DATE OF INCEPTION, TO
                                                NOVEMBER 30, 1996         FEBRUARY 28, 1997         FEBRUARY 28, 1997
                                                ------------------      ---------------------     ---------------------
<S>                                             <C>                     <C>                       <C>
Revenue:
   Interest income                                 $     1,858                $    2,475               $     4,333
                                                    ----------                 ---------                 ---------
Costs and Expense:
   Research and development                          2,058,980                    73,249                 2,132,229
   General and administrative                           33,568                    66,320                    99,888
                                                    ---------                 ---------                 ---------
                                                     2,092,548                   139,569                 2,232,117
                                                    ---------                 ---------                 ---------
Net loss                                            (2,090,690)                 (137,094)               (2,227,784)
                                                   =============              ============             ===========
Net loss per common share(1)                       $      (.81)               $     (.05)              $      (.86)
                                                   =============              ============             ===========
Shares used in computing net loss per common
  share(1)                                           2,593,440                 2,593,996                 2,593,668
                                                   =============              ============             =============
</TABLE>

BALANCE SHEET DATA:

<TABLE>
<CAPTION>

                                                                NOVEMBER 30, 1996      FEBRUARY 28, 1997
                                                                -----------------      -----------------
<S>                                                                 <C>                   <C>
Cash and cash equivalents                                           $   495,421           $   213,029
Working capital                                                         503,621               431,362
Total assets                                                            532,005               502,625
Deficit accumulated during the development stage                     (2,090,690)           (2,227,784)
Total stockholders' equity                                              510,487               443,393
</TABLE>

- ------------
(1) See  notes  1  and  4 of  Notes  to  Financial  Statements  for  information
    concerning  the  computation of net loss per common share and shares used in
    computing net loss per common share.


                                       21





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

    The following should be read in conjunction  with "SELECTED  FINANCIAL DATA"
and the Company's Financial  Statements and Notes thereto appearing elsewhere in
this Prospectus.

OVERVIEW

    The Company is a development  stage  pharmaceutical  company  engaged in the
development of a single new antiviral drug candidate called Thiovir. The Company
was incorporated in 1988 but remained a "shell" corporation, i.e. without assets
or liabilities,  until July 1996, when it commenced the acquisition of a license
of certain proprietary rights to, and the development of, Thiovir.

    The Company is a  development  stage  company,  has not derived any revenues
from the sale of products and has relied upon private  equity  financing for its
capital.  As of  February  28,  1997,  the  Company's  accumulated  deficit  was
$2,227,784.

    The Company has no operating history upon which an evaluation of the Company
and its prospects can be based. The risks, expenses and difficulties encountered
by companies at an early stage of development must be considered when evaluating
the  Company's  prospects.  There are numerous  risks  inherent in a development
stage company which is reliant upon the  development of a single  pharmaceutical
product,  including the uncertainties of research and the outcome of preclinical
testing  and  clinical  trials,  a lengthy  and  expensive  regulatory  approval
process,  obtaining and defending a satisfactory patent position, and attracting
and retaining motivated and qualified personnel. See "RISK FACTORS."

    The operating expenses of the Company cannot be predicted with certainty and
will  depend  on  several  factors,  primarily  the  level  of drug  development
expenses.  Development  expenses  will depend on the progress and results of the
Company's  development,  preclinical tests and clinical trials of Thiovir, which
cannot be predicted. Management may be able to control the timing of development
expenses  in  part by  accelerating  or  decelerating  preclinical  testing  and
clinical  trial  activities,  although  attainment  of  the  Company's  business
objectives may necessitate pursuit of these activities on an accelerated basis.

RESULTS OF ACTIVITIES

PERIOD FROM INCORPORATION TO JULY 5, 1996, DATE OF INCEPTION

    For the period from  incorporation  (1988) through July 5, 1996, the Company
was  inactive,  had no capital  funds,  received  no  revenues  and  incurred no
expenses.

PERIOD FROM JULY 5, 1996, DATE OF INCEPTION, TO NOVEMBER 30, 1996

    The Company had interest  income of $1,858 in the period ended  November 30,
1996.

    In August  1996,  the  Company  purchased  an option to acquire a license of
certain rights to the drug Thiovir. For the option, the Company paid $100,000 in
cash and issued to the grantor of the option  200,000 shares of Common Stock and
warrants  to  purchase  an  additional  200,000  shares  of  Common  Stock.  The
recipients  of the shares of Common  Stock and the  warrants  paid the Company a
total  of $200 for  these  securities.  Also in  1996,  the  Company  issued  an
additional 750,000 shares of Common Stock to Charles E. McKenna,  Ph.D. (320,000
shares),  Mary  Anthony  Gray  (110,000  shares)  and Thomas D.  Wolfe  (320,000
shares), for aggregate cash consideration of $750. Management estimated the fair
value of the 950,000 shares at $1.60 per share for a total of $1,520,000,  based
upon the offering  price of the  Company's  Common Stock in a private  placement
offering  commenced on August 20, 1996. In September 1996, the Company exercised
its option to acquire the  license of rights to Thiovir  and paid an  additional
$440,000 in cash  therefor.  The  Company  charged  the  difference  between the
estimated  aggregate  value and the aggregate cash purchase price of the 950,000
shares, or $1,519,050, and the cash consideration paid of approximately $540,000
for the licensing  rights,  as research and  development  expense.  See "CERTAIN
RELATIONSHIPS AND RELATED TRANSACTIONS."



                                       22




    General and administrative expenses totaled $33,568, primarily consisting of
compensation, travel and office expense.

    The Company  incurred a net loss of $2,090,690 for the period ended November
30, 1996.

 THREE MONTHS ENDED FEBRUARY 28, 1997

    The Company had interest  income of $2,475 in the quarter ended February 28,
1997.

    Research and development  expense for the quarter was $73,249,  reflecting a
research grant to USC pursuant to a new research agreement which continues until
at least September 30, 1997. See "BUSINESS -- Research Agreement with USC."

    General and  administrative  expenses  for the  quarter  were  $66,320,  the
largest components of which were personnel compensation of $17,538 and legal and
consulting expenses of $21,800. The level of general and administrative expenses
for  the   quarter  was  higher  than  prior   periods   because  of   increased
administrative  and  management  activity in the  planning and  preparation  for
additional tests and clinical trials for Thiovir.

    The Company  incurred a net loss of $137,094 for the quarter ended  February
28,  1997,  resulting  in an  accumulated  deficit  of  $2,227,784  during  this
development stage of the Company.

    LIQUIDITY AND CAPITAL RESOURCES

    The Company has financed its  activities  since July 5, 1996  primarily from
the net proceeds of private placements of Common Stock. As of February 28, 1997,
the Company had received  aggregate cash proceeds of  $1,210,654.  In July 1996,
three stockholders of the Company  contributed a total of $100,200 to the equity
capital of the Company.  In October 1996, the Company paid cash of $539,930 and,
in August  1996,  issued  shares of its Common  Stock with a value,  net of cash
consideration  received for the shares,  of  $1,519,050 in  consideration  for a
license of certain rights to Thiovir.  In October 1996, the Company  completed a
private  placement  of  665,000  shares at $1.60 per share for net  proceeds  of
$1,015,473, of which $34,496 was receivable at November 30, 1996 and paid in the
quarter  ended  February 28,  1997.  An  additional  $45,504 was received in the
quarter  ended  February  28, 1997 from the sale of shares of Common  Stock to a
single  investor  at $1.60 per  share.  At  February  28,  1997,  the  Company's
liquidity consisted of total cash and cash equivalents of $213,029.

    The  Company   expects   that  its  capital   requirements   will   increase
substantially  in future  periods  as the  Company  funds  its drug  development
program.  The Company's future capital requirements will depend on many factors,
including the progress of the Company's drug development  program, the scope and
results of preclinical testing and clinical trials, the cost, timing and outcome
of regulatory  reviews,  costs of patent  prosecution,  administrative and legal
expenses,  the establishment of capacity for sales and marketing functions,  the
establishment of relationships  with third parties for  manufacturing  and sales
and marketing functions, and other factors. Commencing in 1998, the Company will
also be required to make minimum royalty payments in accordance with the license
agreement  under which it licenses  rights to the drug Thiovir in the  following
amounts: $12,500 in 1998, $25,000 in 1999, $50,000 in 2000 and $125,000 per year
thereafter.

    The Company believes that the net proceeds of the Offering together with its
existing  cash and  short-term  investments  will be  adequate  to  satisfy  its
anticipated capital requirements through at least December 31, 1998. The Company
expects that it may be required to raise  substantial  additional  funds through
equity or debt financings, collaborative arrangements with corporate partners or
from other sources.  There can be no assurance that  additional  funding will be
available  on  favorable  terms from any of these  sources or at all.  See "RISK
FACTORS -- Future Capital Needs; Uncertainty of Additional Funding" and "SPECIAL
NOTE REGARDING FORWARD-LOOKING STATEMENTS."

    For a discussion of the Company's plan of operation, see "USE OF PROCEEDS."



                                       23




                                    BUSINESS

OVERVIEW

    The Company is a development  stage  pharmaceutical  company  engaged in the
development of  thiophosphonoformic  acid ("TPFA"), an anti-viral compound,  for
which the Company has adopted the trade name "Thiovir(tm)." The initial focus of
the  Company's  development  activities  will be to  demonstrate  the safety and
efficacy of Thiovir for  treatment  of patients  infected  with HIV and patients
showing active  infection of CMV, which causes  blindness and other  conditions.
CMV is a  common  opportunistic  infection  among  AIDS  patients.  The  Company
believes that Thiovir,  if successfully  developed and approved for sale,  would
constitute a candidate  for inclusion in  combination  drug therapy for HIV/AIDS
treatment and would provide several  benefits over existing  treatments for CMV,
particularly its potential ability to replace more toxic  intravenous  treatment
with a less toxic oral treatment.  The only  development work on Thiovir to date
has been limited to laboratory  and animal  studies  conducted by USC, which has
licensed to the Company its proprietary rights to Thiovir, and by other academic
and/or  research  organizations  which  have no  affiliation  with the  Company.
Therefore, Thiovir is in an early stage of development.

    In the  United  States,  the use and sale of Thiovir is subject to the rules
and  regulations  of the FDA, and  obtaining  the  necessary  FDA approval  will
require  substantial  preclinical tests and clinical trials. The Company expects
to commence  clinical  trials for Thiovir in 1997.  The  Company  believes  that
Thiovir may meet the criteria  established by the FDA for accelerated  approval.
As a result, the Company may be able to commercialize  Thiovir in a shorter time
period than has  historically  been applicable for a drug that does not meet the
criteria for accelerated approval. See "BUSINESS -- Government Regulation."

    Initially,   the   Company   intends  to   maintain   a  limited   corporate
infrastructure    devoted   almost    exclusively   to   the   development   and
commercialization  of  Thiovir.  Accordingly,  the  Company  will engage CROs to
conduct preclinical tests and clinical trials on Thiovir.  The Company will also
contract with other  companies to manufacture  the drug. The Company  intends to
rely upon  part-time  consultants  and CROs to provide  expertise  in  designing
appropriate  tests and trials and in seeking FDA and other government  approval.
Furthermore,  the Company  does not believe that it will be necessary to develop
an  extensive  sales and  marketing  force to promote the sale of Thiovir in the
United States, if and when it may be sold, since the market for HIV/AIDS and CMV
therapies is concentrated among a relatively small number of care providers.

    In August  1996,  the Company  acquired an  exclusive  worldwide  license to
proprietary  rights  to  Thiovir  held by USC from a limited  partnership  which
funded the research and  development  of Thiovir.  The Company has  generated no
revenues  from the  sale of  products  and,  as of  February  28,  1997,  has an
accumulated  deficit of  $2,227,784.  There can be no assurance that the Company
will ever achieve profitable operations.

    The Company's  executive  offices are located at 10940  Wilshire  Boulevard,
Suite 1600, Los Angeles, California, pursuant to a short-term lease. The Company
expects to relocate its offices,  most likely in the Southern California region,
as it hires additional employees to staff increased  operational  activity.  The
Company is a Delaware  corporation  and is the successor by merger to a Missouri
corporation  which  was  originally  formed  in 1988,  but  remained  a  "shell"
corporation with no operations,  assets or liabilities  until its acquisition of
license rights to TPFA.

TARGETED INDICATIONS FOR THIOVIR

    HIV/AIDS.  HIV is the viral  infection  which causes AIDS. HIV replicates in
the body,  resulting  in an  increasing  amount of the virus  referred  to as an
increase in the "viral  load."  AIDS  occurs  when the HIV viral load  reaches a
sufficiently  high level to  significantly  compromise  the immune system and/or
when certain opportunistic infections (such as CMV) occur. The treatment of AIDS
has  increasingly  focused on inhibiting  two enzymes,  known as "protease"  and
"reverse  transcriptase" 


                                       24






("RT"),  the activity of which are necessary to the process of HIV  replication.
Initially,  AIDS was treated with a single drug (referred to as  "monotherapy"),
such as AZT,  which is a  nucleoside  RT  inhibitor.  Experience  has shown that
monotherapy  results in the rapid emergence of a mutated form of the virus which
is resistant to the drug.  More recently,  the treatment of HIV/AIDS has focused
on the  use of  combinations  of  protease  and RT  inhibitors  (referred  to as
"combination  therapy") which has  significantly  reduced the viral load in many
cases.

    The long-term  efficacy of the drugs now being used to reduce HIV viral load
is an  unresolved  issue.  Resistance  to  one  or  more  drugs  being  used  in
combination drug therapy has been  increasingly  recognized in some patients due
to HIV's ability to mutate.  Patient  compliance  has also been  recognized as a
problem with combination  drug therapy because the treatment  regimen is complex
and demanding and often results in serious, unwanted side effects.  According to
published reports, the recently-introduced  combination drug therapies have been
least effective among patients who had previously been subjected to a regimen of
AZT or other nucleoside RT inhibitors.  Consequently,  the search for new drugs,
and for new combinations of drugs for the treatment of HIV/AIDS, continues at an
intense level of activity.

    Thiovir is a non-nucleoside  RT inhibitor that has inhibited the replication
of HIV in  laboratory  tests.  Thiovir is at least  partially  metabolized  into
foscarnet  in vitro  in  cells  and in dogs and  cats.  Therefore,  the  Company
believes  that  Thiovir  may  likewise  be  partially  converted  to the  active
ingredient  in  foscarnet in human  patients.  Although  foscarnet  has not been
widely  used to treat  HIV/AIDS  because  of the need  for  central  intravenous
administration,  it has been recognized to inhibit HIV replication in some human
patients.  Consequently,  the Company  believes  that the  potential  exists for
Thiovir to be an attractive  candidate for inclusion in combination drug therapy
for HIV/AIDS for the following reasons:

    * The resistance to combination drug therapies  exhibited among patients who
      had previously undergone therapy with a nucleoside RT inhibitor may not be
      exhibited   when  the   nucleoside   RT  inhibitor  is  replaced   with  a
      non-nucleoside RT inhibitor.

    * If Thiovir  were to prove  effective  in treating  both  HIV/AIDS and CMV,
      physicians  may  include  Thiovir in a  combination  drug  therapy for its
      double effect of treating HIV/AIDS and, on a prophylactic basis, CMV.

    CMV.  CMV  is a  virus  which  resides  in  most  human  beings.  It  is  an
opportunistic  virus  that may become  active  when the human  immune  system is
weakened.  Consequently,  AIDS patients are at  considerable  risk of active CMV
infection.  The primary manifestation of active CMV infection,  estimated at 85%
of all  manifestations,  is in the retina of the eye (CMV retinitis).  Other CMV
manifestations include  gastrointestinal  infection (symptoms include ulcers and
chronic   diarrhea)   and   neurologic   infection   (encephalitis   and   other
complications). If untreated, CMV retinitis causes blindness. Treatment controls
but does not eliminate CMV, so ongoing therapy is generally necessary.

    Until recently,  physicians  typically treated CMV retinitis with two drugs,
foscarnet  and  ganciclovir.  In June  1996,  the  FDA  approved  a third  drug,
cidofovir, for treatment of CMV retinitis. The Company is aware of several other
drugs which are under development for the treatment of CMV retinitis. Foscarnet,
which exhibits renal  toxicity,  is generally  administered  intravenously  on a
daily basis by means of a surgically- implanted central intravenous line because
it is not absorbed by the intestine. This precludes oral administration. Central
intravenous drug therapy is  substantially  more burdensome and costly than oral
drug therapy. Ganciclovir is available in oral and intravenous forms and is also
administered by a device surgically  implanted in the eye for sustained release.
Oral  administration,  however, is typically used only after an induction period
of central intravenous administration.  The use of an eye implant alone, without
simultaneous systemic therapy, often results in the development of CMV retinitis
in the other eye and/or  manifestations  of active CMV infection in the internal
organs.  CMV has  developed  resistance  to  ganciclovir  in some  patients.  In
addition,  ganciclovir has exhibited bone marrow toxicity in some cases, as does
the often-used HIV/AIDS drug AZT. Consequently,  simultaneous use of ganciclovir
and AZT has been reported to cause profound bone marrow  suppression,  resulting
in the inability to fight  infection.  Patients who use  ganciclovir may require
administration  of immune  cell  enhancement  drugs in order to  counteract  the
adverse effects of ganciclovir.  Cidofovir is  administered  intravenously  and,
like foscarnet (and Thiovir), exhibits renal toxicity.



                                       25





    There is  substantial  ongoing  research  into and  clinical  trials  of new
treatment  methods using existing drugs,  including  intravitreal  injection and
administration of various combinations of these drugs. The Company is also aware
of several  other drugs which are under  development  for the  treatment  of CMV
retinitis.

    The Company believes that, with the exception of oral  ganciclovir,  none of
the drugs described above are currently  administered  prophylactically prior to
manifestation of CMV retinitis.

    The molecular  structure of Thiovir is identical to that of foscarnet except
that a single  oxygen  atom in  foscarnet  is  replaced  with a  sulfur  atom in
Thiovir.   To  date,   laboratory  in  vitro  tests   conducted  by  independent
laboratories  on human cell  cultures  indicate  that at certain  concentrations
Thiovir is similar to foscarnet in  inhibiting  CMV  replication.  The potential
exists,  therefore,  that the  application  of Thiovir  will result in a "double
hit," i.e., the portion of Thiovir that  transforms to foscarnet and the portion
that retains its original  chemical  structure would both be present in the body
to control the CMV virus.

    The Company believes that the potential exists for the following benefits to
the use of Thiovir in the treatment of CMV:

    * Thiovir may be  administered  orally.  Initial animal studies suggest that
      Thiovir will  demonstrate  sufficient oral  availability  to humans.  Oral
      dosage is  substantially  less intrusive and burdensome  than  intravenous
      administration.

    * While Thiovir  exhibits some renal  toxicity,  preliminary  animal studies
      suggest  that  Thiovir  may  involve  a lesser  degree of  adverse,  toxic
      consequences than other drugs currently being used.

    * Use of Thiovir may be significantly less costly than alternative drugs for
      many patients because it avoids intravenous  administration and the use of
      immune cell enhancement drugs would not be required.

    THE  DEVELOPMENT  OF THIOVIR IS IN AN EARLY  STAGE.  TO DATE,  ONLY  LIMITED
LABORATORY  AND ANIMAL  STUDIES HAVE BEEN  CONDUCTED ON THIOVIR.  FURTHER TESTS,
INCLUDING  HUMAN  CLINICAL  TRIALS,  WILL BE NECESSARY TO  DEMONSTRATE  THE ORAL
BIO-AVAILABILITY,  THE EFFICACY AND THE TOXICITY AND OTHER SAFETY  ATTRIBUTES OF
THE USE OF  THIOVIR  FOR THE  TREATMENT  OF  HIV/AIDS  AND CMV.  THERE CAN BE NO
ASSURANCE  THAT SUCH TESTS WILL  ESTABLISH  THAT USE OF THIOVIR  WILL  RESULT IN
THESE BENEFITS.  SEE "RISK FACTORS -- UNCERTAINTY OF PRODUCT  DEVELOPMENT" AND "
- -- UNCERTAINTIES RELATED TO CLINICAL TRIALS."

RESEARCH AND DEVELOPMENT STATUS AND ACTIVITIES

    Research and development  with respect to Thiovir has been performed to date
primarily  at USC under the  direction  of  Professor  Charles E.  McKenna.  See
"MANAGEMENT -- Executive Officers, Directors and Key Consultants" and "PRINCIPAL
STOCKHOLDERS."  In  1994,  PerArdua   Investors,   L.P.,  a  California  limited
partnership (the "Limited  Partnership"),  was formed to fund the development of
Thiovir  through  research  grants  extended  to USC.  The  Limited  Partnership
obtained certain rights to obtain an exclusive  license of the patents and other
intellectual  property rights relating to Thiovir  developed at USC. The Company
acquired such rights in August 1996. See "BUSINESS -- Relationship with USC" and
"CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS."

    In vitro studies conducted at USC have demonstated the ability of Thiovir to
inhibit replication of HIV and CMV and indicated  preliminarily that Thiovir may
have favorable oral  bio-availability as compared to CMV drugs currently in use.
An effective  and  relatively  simple  method of  synthesizing  Thiovir was also
developed at USC. The  proprietary  rights of which the Company is the exclusive
licensee include a United States patent for the use of Thiovir for the treatment
of HIV, a U.S.  patent on a method of  synthesis  of Thiovir,  a pending  patent
application, and certain other patent rights. See "BUSINESS -- Patents."

    The Company plans to continue the research and development of Thiovir with a
view to obtaining FDA and other government  approval for its sale and use in the
treatment of HIV/AIDS and active CMV  infection  and to  investigate  additional
potential therapeutic uses.

    The Company is currently  developing  standard operating  procedures for the
production of Thiovir pursuant to GMPs which will meet FDA requirements,  and is
designing and planning laboratory and animal



                                       26






   
studies  intended to satisfy Phase I requirements  of the FDA approval  process.
Those studies, similar in some cases to the studies already conducted, will have
the  objective of  establishing  the  chemical  stability of the product and its
toxicity   and   tolerance   properties.   Mutagenicity,    immunogenicity   and
teratogenicity  studies may also be performed if deemed  necessary.  The Company
expects the completion of these studies and the Phase I process to take one year
or longer.  The production of Thiovir under GMP standards and the conduct of the
Phase I studies  will be performed on behalf of the Company by CROs who have not
as yet been  identified  by the  Company.  The results of the studies  performed
during the Phase I process will be submitted to the FDA as part of an IND, which
must be evaluated and found  acceptable by the FDA before human clinical  trials
may commence. See "BUSINESS -- Government Regulation."
    

RESEARCH AGREEMENT WITH USC

    The  Company  has  recently  entered  into  a new  research  agreement  (the
"Research  Agreement") with USC with respect to Thiovir.  The primary objectives
of the research to be conducted by USC include the following:

    * to acquire  initial in vitro data relating to the potential use of Thiovir
      with  other  HIV  and/or  CMV  inhibitor  drugs  as part of a  combination
      therapy;

    * to conduct additional research into other potential applications of
      Thiovir; and

    * to transfer to the Company  technology  related to Thiovir and to continue
      patent filings related to Thiovir.

    The  research at USC will be  conducted  under the  direction  of  Professor
McKenna and will continue  until at least  September  30, 1997.  The research is
being funded by a grant of approximately $176,000 which has already been paid by
the Company. See "CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS."

POTENTIAL MARKET FOR THIOVIR

    Market Size. The World Health Organization estimated at the end of 1996 that
there were more than 22 million people infected with HIV worldwide, of whom more
than eight million had  developed  AIDS.  The United States  Centers for Disease
Control and  Prevention  has  disclosed  that  through  December  1995 more than
500,000  persons in the United States with AIDS had been reported to it and that
approximately  343,000 of them had died.  There are no  reliable  figures on the
number of AIDS  patients  in the United  States or in the world with  active CMV
infection. All HIV/AIDS patients represent the potential market for Thiovir.

    Thiovir,  as  well  as the  other  known  drugs  used to  treat  active  CMV
infection,  will not "cure" CMV; its use would merely suppress viral replication
and spread of the virus. Consequently, use of Thiovir would be on-going. Because
active CMV infection  typically  becomes manifest within a patient in the latter
stages of AIDS infection, the use of drug therapy to control CMV, at least until
recently,  was  inevitably  shortened by the death of the patient.  Treatment of
AIDS patients  using  combination  drug  therapy,  however,  has recently  shown
significant  clinical  benefits  including  reduced HIV viral load and increased
patient longevity.  There is insufficient published information to determine the
degree to which active CMV infection may have gone into  remission in those AIDS
patients who have benefited from  combination  drug therapy.  Anecdotal  reports
indicate that active CMV  infection is not  significantly  affected  among those
patients.

    The  Company is not aware of  published  data which  indicate  the extent to
which new cases of active  CMV  infection  have been  reduced as a result of the
recent  success of  combination  drug therapy  among HIV  patients.  The Company
believes,  however,  and  anecdotal  reports  confirm,  that to the extent  that
combination drug therapy, or any other therapy,  significantly reduces the viral
load of HIV  patients,  the number of new patients with active CMV infection has
been and will be proportionately reduced. Consequently, the demand for CMV drugs
may be  significantly  diminished at the time,  if ever,  the Company is able to
market Thiovir. See "RISK FACTORS -- Uncertainty of Market Demand for Thiovir."



                                       27





    Competition.  The  segment  of the  pharmaceutical  industry  engaged in the
treatment of HIV/AIDS and associated  viruses such as CMV is highly  competitive
and rapidly changing. If successfully developed and approved as either an CMV or
HIV drug, or for both indications, Thiovir would compete with numerous therapies
now in existence and currently in development.

    Regarding CMV,  foscarnet is marketed under the name  "Foscavir(R)" by Astra
Pharmaceuticals,  ganciclovir  is marketed under the name  "Cytovene(R)"  by the
Syntex Division of Hoffman LaRoche and under the name  "Vitrasert(tm)" by Chiron
Vision,  and  cidofovir  is  marketed  under  the name  "Vistide(R)"  by  Gilead
Sciences.  All four companies possess vastly greater  organizations,  experience
and resources than the Company. See "RISK FACTORS -- Intense  Competition;  Risk
of  Technological  Change." The rights to other drugs known by the Company to be
the subject of testing for FDA approval for  treatment of CMV retinitis are held
by Isis Corporation,  Gilead Sciences, Bristol Myers-Squibb and Glaxo- Wellcome.
Other  drugs  that are not  known to the  Company  may be in  various  stages of
development and testing.

    Distributors  of HIV/AIDS  drugs which have been approved by the FDA include
Glaxo-Wellcome,   Agouron  Pharmaceuticals,   Gilead  Sciences,   Merck,  Abbott
Laboratories,  Hoffman LaRoche,  Bristol- Myers Squibb and Boehringer-Ingelheim.
These, as well as other companies which can be expected to gain FDA approval for
HIV/AIDS drugs, possess vastly greater  organizations,  experience and financial
resources than the Company.

    The  competitive  factors which the Company expects to encounter when and if
it  obtains  government  approval  for the sale of  Thiovir  are  primarily  the
demonstrated efficacy of a product,  ease of drug administration,  the product's
compatibility  with other drugs being  administered  to HIV/AIDS  patients,  the
relative degree of a product's  adverse side effects,  and the cost of using the
drug,  which would include  associated costs of  administration  and the cost of
drugs that might be taken to ameliorate adverse side effects.

SALES AND MARKETING

    The Company has not yet  formulated a specific  marketing and sales plan for
Thiovir when and if it obtains government approval for Thiovir.  Similarly,  the
Company has no marketing or sales personnel.  In the United States,  the medical
care of a  substantial  percentage  of HIV/AIDS  patients is  concentrated  in a
relatively small number of medical facilities located in urban centers and there
is an extensive flow of information  within the medical community that regularly
provides care to HIV/AIDS patients regarding the safety and efficacy of existing
and newly-developed  therapies.  Moreover,  HIV/AIDS patients support groups are
active and themselves constitute a source of information on drug therapies.  The
Company intends to provide  information to the HIV/AIDS medical community and to
support  groups on a continuous  basis with respect to its progress,  if any, in
further developing Thiovir.  The Company does not expect that a large and costly
marketing and advertising  program will be necessary to acquaint the marketplace
with Thiovir when and if it obtains FDA approval for its sale and use.

MANUFACTURING

    The Company does not have any manufacturing  capacity or relationships  with
third parties and currently  plans to seek to establish a  relationship  with an
unrelated  third  party  manufacturer  for the  manufacture  of  clinical  trial
material and, in the event FDA approval is received,  the commercial  production
of Thiovir. There can be no assurance that the Company will be able to establish
a relationship with a third party manufacturer on commercially  acceptable terms
or that a third party  manufacturer  will be able to  manufacture  products on a
cost-effective  basis in commercial  quantities  under GMPs mandated by the FDA.
The Company does believe, however, that the relatively simple chemical structure
of Thiovir and the methods of synthesizing Thiovir which have been developed and
licensed to the Company will allow an  efficient,  reliable  and  cost-effective
manufacturing process. Nevertheless, the Company's dependence upon third parties
for  manufacturing  may adversely  affect the Company's  profit  margins and its
ability to develop and commercialize  Thiovir on a timely and competitive basis.
Further,  there  can be no  assurance  that  manufacturing  or  quality 



                                       28





control problems will not arise in connection with the manufacture of Thiovir or
that a  third  party  manufacturer  will  be  able  to  maintain  the  necessary
government  licenses  and  approvals to continue  manufacturing.  Any failure to
establish a relationship with a third party for its  manufacturing  requirements
on  commercially  acceptable  terms would have a material  adverse effect on the
Company.  See "RISK FACTORS -- Dependence on Third Parties for  Development  and
Manufacturing" and "BUSINESS -- Government Regulations."

GOVERNMENT REGULATION

    The manufacture and sale of Thiovir are subject to government regulations in
the United States and in certain foreign  countries.  In the United States,  the
Company is subject to the rules and regulations established by the FDA requiring
the  presentation of data  indicating  that the Company's  products are safe and
efficacious and are  manufactured in accordance with the FDA's GMP  regulations.
Safety and effectiveness standards are required in certain other countries.  The
Company believes that only a limited number of foreign  countries have extensive
regulatory  requirements,  specifically  the countries  comprising  the European
Union and Japan.

    The  steps  required  to be  taken  before  a new  prescription  drug may be
marketed in the United  States  include (i)  preclinical  laboratory  and animal
tests,  (ii) the  submission  to the FDA of an IND,  which must be evaluated and
found  acceptable by the FDA before human  clinical  trials may commence,  (iii)
adequate and  well-controlled  human clinical trials to establish the safety and
effectiveness  of the drug, (iv) the submission of an NDA to the FDA and (v) FDA
approval of the NDA.  Prior to obtaining FDA approval of an NDA, the  facilities
that will be used to manufacture the drug must undergo a preapproval  inspection
to ensure compliance with the FDA's GMP regulations.

    Preclinical  tests include  laboratory  evaluation of product  chemistry and
animal  studies to assess the safety and  effectiveness  of the  product and its
formulation.  The results of the  preclinical  tests are submitted to the FDA as
part of an IND,  and unless the FDA  objects,  the IND will become  effective 30
days  following  its  receipt  by the FDA.  If the FDA has  concerns  about  the
proposed clinical trial, it may delay the trial and require modifications to the
trial protocol prior to permitting the trial to begin. As a result, there can be
no assurance that the FDA will permit a proposed IND to become effective.

    Clinical trials involve the administration of the pharmaceutical  product to
healthy  volunteers or to patients  identified as having the condition for which
the pharmaceutical is being tested. The pharmaceutical is administered under the
supervision of a qualified principal investigator. Clinical trials are conducted
in accordance with protocols  previously submitted to the FDA as part of the IND
that detail the objectives of the trial,  the parameters  used to monitor safety
and the efficacy  criteria  that are being  evaluated.  Each  clinical  trial is
conducted  under the auspices of an  Institutional  Review Board  ("IRB") at the
institution at which the trial is conducted.  There IRB  considers,  among other
things  ethical  factors,  the  safety of the human  subjects  and the  possible
liability risk for the institution.

    Clinical trials are typically  conducted in three sequential phases that may
overlap. In Phase I, the initial introduction of the pharmaceutical into healthy
human  volunteers,  the  emphasis  is on testing for safety  (adverse  effects),
dosage tolerance, metabolism, distribution, excretion and clinical pharmacology.
Phase II  involves  trials in a limited  patient  population  to  determine  the
effectiveness  of the  pharmaceutical  for  specific  targeted  indications,  to
determine dosage  tolerance and optimal dosage and to identify  possible adverse
side  effects  and safety  risks.  In serious  diseases  such as AIDS,  patients
suffering  from the disease  rather than healthy  volunteers are used in Phase I
trials.  In addition,  Phase I trials may be divided  between Phase Ia, in which
single doses of the drug are given,  and Phase Ib, in which  multiple  doses are
given.  In the  latter  instance,  some  efficacy  data may be  obtained  if the
subjects are patients suffering from the disease rather than healthy volunteers,
and these  trials are referred to as "Phase  Ib/IIa."  After a compound has been
shown in Phase II trials  to have an  acceptable  safety  profile  and  probable
effectiveness,   Phase  III  trials  are   undertaken   to   evaluate   clinical
effectiveness  further and to further test for safety within an expanded patient
population at multiple  clinical study sites.  The FDA reviews both the clinical
trial plans and the results of the trials at each phase and may  discontinue the
trials at any time if there are significant safety issues.

    The results of the  preclinical  tests and clinical  trials are submitted to
the FDA in the form of an NDA for marketing  approval.  The testing and approval
process  is likely to  require  substantial  time and effort and 



                                       29






there can be no  assurance  that any FDA  approval  will be  granted on a timely
basis or at all.  The  approval  process  is  affected  by a number of  factors,
including  the  severity  of  the  disease,   the  availability  of  alternative
treatments  and  the  risks  and  benefits   demonstrated  in  clinical  trials.
Additional  animal  studies or clinical  trials may be requested  during the FDA
review process and may delay marketing  approval.  Upon approval,  a drug may be
marketed only for the approved indications in the approved dosage forms. Further
clinical  trials would be necessary to gain  approval for the use of the product
for any  additional  indications  or  dosage  forms.  The FDA may  also  require
post-market  reporting and may require surveillance programs to monitor the side
effects of the drug, which may result in withdrawal of approval.

    Many foreign  countries also regulate the clinical  testing,  manufacturing,
marketing and use of pharmaceutical  products.  The requirements relating to the
conduct of clinical trials, product approval, manufacturing,  marketing, pricing
and reimbursement vary widely from country to country. There can be no assurance
that the  Company or any third  parties  with which the  Company  may  establish
collaborative  relationships will be able to attain or maintain  compliance with
such requirements.

    The FDA has  developed  several  regulatory  procedures  to  accelerate  the
clinical   testing  and  approval  of  drugs   intended  to  treat   serious  or
life-threatening  illnesses under certain  circumstances.  For example, in 1988,
the FDA issued regulations to expedite the development, evaluation and marketing
of drugs for life-threatening and severely  debilitating  illnesses,  especially
where no alternative therapy exists (the "1988  Regulations").  These procedures
encourage  early  consultation  between  the  IND  sponsors  and  the FDA in the
preclinical testing and clinical trial phases to determine what evidence will be
necessary  for  marketing  approval  and to assist  the  sponsors  in  designing
clinical trials. Under this program, the FDA works closely with the IND sponsors
to accelerate and condense Phase II clinical  trials,  which may, in some cases,
eliminate  the need to conduct  Phase III trials or limit the scope of Phase III
trials. Under the 1988 Regulations,  the FDA may require post-marketing clinical
trials (Phase IV trials) to obtain  additional  information on the drug's risks,
benefits and optimal use.

    In 1992, the FDA issued regulations establishing an accelerated NDA approval
procedure  for  certain  drugs  under  Subpart H of the  agency's  NDA  approval
regulations  ("Subpart H  Regulations").  The Subpart H Regulations  provide for
accelerated   NDA  approval  for  new  drugs   intended  to  treat   serious  or
life-threatening  diseases  where the drugs  provide  a  meaningful  therapeutic
advantage over existing  treatment.  Under this accelerated  approval procedure,
the FDA may approve a drug based on evidence from  adequate and  well-controlled
studies of the drug's  effect on a surrogate  endpoint that  reasonably  suggest
clinical  benefits,  or on evidence of the drug's effect on a clinical  endpoint
other than survival or irreversible  morbidity.  This approval is conditional on
the  favorable  completion  of trials to  establish  and  define  the  degree of
clinical  benefits to the patient.  Such  post-marketing  clinical  trials would
usually be underway  when the product  obtains this  accelerated  approval.  If,
after approval,  a post-marketing  clinical study establishes that the drug does
not perform as expected, or if post-marketing restrictions are not adhered to or
are not  adequate  to  ensure  the  safe  use of the  drug,  or  other  evidence
demonstrates  that the product is not safe and/or effective under its conditions
of use, the FDA may withdraw approval.  The Subpart H Regulations can complement
the 1988 Regulations for expediting the development, evaluation and marketing of
drugs. These two procedures for expediting the clinical  evaluation and approval
of certain drugs may shorten the drug  development  process by as much as two to
three years.

    The  Company  believes  that  Thiovir  may be a  candidate  for  accelerated
development  and/or  approval  under the 1988  Regulations  and/or the Subpart H
Regulations. There can be no assurance, however, that Thiovir ultimately will be
eligible for development and/or approval under these  regulations.  In addition,
there can be no assurance that Thiovir will be approved by the FDA for marketing
at all or, if approved for marketing, will be approved for marketing sooner than
would be traditionally expected.

    Once the sale of a product is approved, the FDA regulates the manufacturing,
marketing and other  activities  under the Federal Food,  Drug, and Cosmetic Act
and the FDA's  implementing  regulations.  The FDA  periodically  inspects  both
domestic and foreign drug  manufacturing  facilities to ensure  compliance  with
applicable GMP regulations and other requirements. In addition, manufacturers in
the United  States must register with the FDA and submit a list of every drug in
commercial  distribution.  Foreign  manufacturers  are subject  only to the drug
listing  requirement.  The Company does not have or 


                                       30







currently intend to develop the facilities to manufacture  Thiovir in commercial
quantities, and intends to establish a relationship with a contract manufacturer
for the commercial  manufacture  of Thiovir.  There can be no assurance that the
Company's  contract  manufacturer will be able to attain or maintain  compliance
with GMP  regulations.  Post-marketing  reports are also required to monitor the
product's usage and effects. Product approvals may be withdrawn, or other action
as  may  be  ordered,   or  sanctions  imposed  if  compliance  with  regulatory
requirements is not maintained.

    The  Company  expects to seek  approval  for Thiovir by the  European  Union
contemporaneously  with seeking approval by the FDA. The processes and standards
of the  European  Union are  similar to those of the FDA and are  subject to the
same  uncertainties   regarding  the  time  of  completion  and  expenditure  of
resources.  The  Company  has no plans at this time to  undertake  the  approval
process  for  Thiovir in Japan or any other  foreign  country.  The  Company may
decide to market  Thiovir,  prior to  obtaining  any FDA  approval,  in  certain
foreign countries that do not require regulatory approval,  although the Company
does not now have any plans for doing so.

    In addition to the import requirements of foreign countries,  a company must
also comply  with  United  States  laws  governing  the export of FDA  regulated
products.  Pursuant to the FDA Export Reform and Enhancement Act of 1996, a drug
that has not  obtained  FDA approval may be exported to any country in the world
without FDA  authorization  if the product  both  complies  with the laws of the
importing  country and has obtained valid marketing  authorization in one of the
following countries: Australia, Canada, Israel, Japan, New Zealand, Switzerland,
South  Africa,  the European  Union,  or a country in the European  Union,  or a
country in the European Economic Area. The FDA is authorized to add countries to
this list in the future. Among other restrictions,  a drug that has not obtained
FDA  approval may be exported  under the new law only if it is not  adulterated,
accords to the specifications of the foreign  purchaser,  complies with the laws
of the importing country,  is labeled for export, is manufactured in substantial
compliance with GMP regulations and is not sold in the United States.

PATENTS

    Patent protection for Thiovir is an important part of the Company's business
strategy,  and the  Company's  success  depends,  in part, on the ability of the
Company and its  licensors  to obtain  patent  protection  for  Thiovir,  defend
patents  once  obtained,  use patents to  preclude  competitors  from  marketing
Thiovir or substantially  equivalent  drugs,  operate without  infringing on the
patents and proprietary rights of third parties and obtain appropriate  licenses
to patents or  proprietary  rights held by third parties if  infringement  would
otherwise occur.  The proprietary  rights licensed to the Company include a U.S.
patent relating to a method of synthesizing  Thiovir,  a U.S. patent for the use
of Thiovir for the treatment of HIV, a pending patent  application,  and certain
other patent rights.

    There can be no assurance that all or any of the Company's patent rights are
enforceable,  will  not  be  invalidated,  or  will  have  sufficient  scope  to
effectively  prevent others from marketing  Thiovir or substantially  equivalent
drugs.  Furthermore,  the commercial  marketing of therapeutic drugs is a highly
competitive  and  litigation-prone  field.  Even if the Company is successful in
establishing  and defending its patent  position,  the costs and management time
associated  with such  activities  may  significantly  and adversely  affect the
financial condition and business operations of the Company. See "RISK FACTORS --
Uncertainty of Patents; Dependence on Patents, Licenses and Proprietary Rights."

    Astra  Pharmaceutical  ("Astra") owns United States patents on foscarnet and
methods of its use to treat viral  infections,  which  patents are  scheduled to
expire  in or prior to  2000.  Thiovir  is at  least  partially  metabolized  to
foscarnet  in vitro  in  cells  and in dogs and  cats.  Therefore,  the  Company
believes  that  Thiovir  may  likewise  be  partially  converted  to the  active
ingredient in foscarnet in human patients.  It is unresolved  whether  metabolic
conversion of a drug into another  patented drug  constitutes  infringement of a
patent  protecting the second drug. Based upon review of the limited case law in
this area,  the Company  believes that its sale of Thiovir should not be held to
infringe  the Astra  patents  on  foscarnet  for two  reasons.  First,  the oral
delivery of Thiovir would constitute an improved  delivery system as compared to
the  intravenous  delivery of foscarnet in the  treatment of a  life-threatening
illness.


                                       31







Second,  Thiovir is believed to be effective in treating HIV  independent of its
possible conversion into the active ingredients in foscarnet.  Moreover, even if
the Company's sale of Thiovir were held to constitute  infringement of the Astra
patents,  although  there can be no  assurance,  the Company  believes  that the
remedy for infringement  available to Astra would likely be limited to requiring
the  Company to pay Astra a  reasonable  royalty on sales of  Thiovir,  and that
Astra would not succeed in  enjoining  the Company from  selling  Thiovir.  This
royalty  would likely be payable only  through the  remaining  life of the Astra
patents.

    The  Company  is not  aware  of any  United  States  patent  which  would be
infringed by the  manufacture  of Thiovir  pursuant to the method of  synthesis.
There can be no assurance,  however, that the Company is aware of all patents or
patent  applications  that may materially  affect the Company's ability to make,
use or sell Thiovir.  United States patent  applications are confidential  while
pending in the PTO, and patent applications filed in foreign countries are often
first  published six months or more after filing.  Any conflicts  resulting from
third party  patent  applications  and patents  could  significantly  reduce the
coverage  of the  patents  licensed  to the Company and limit the ability of the
Company or its licensor to obtain meaningful patent  protection.  If patents are
issued to other companies that contain  competitive or conflicting  claims,  the
Company  may be required  to obtain  licenses to these  patents or to develop or
obtain alternative  technology.  There can be no assurance that the Company will
be able to  obtain  any such  license  on  acceptable  terms or at all.  If such
licenses are not  obtained,  the Company  could be delayed in or prevented  from
pursuing the  development or  commercialization  of Thiovir,  which would have a
material adverse effect on the Company.

RELATIONSHIP WITH USC

    The Company holds an exclusive  worldwide license from USC (the "USC License
Agreement") to practice the inventions  covered by specified  patents related to
TPFA in order  to  manufacture  and sell  products  for the  treatment  of viral
infections  ("Products").  The Company's  exclusive licensing rights are subject
to: (i) nonexclusive  rights that may be held by the United States government as
a result of any funding of research related to the inventions,  as prescribed by
federal  law;  and (ii) USC's  reserved  but  non-transferable  right to conduct
research relating to the Products.  In addition,  all sub-licenses granted under
the license  must be approved in advance and in writing by USC,  but the license
provides that such approval shall not be unreasonably withheld. The Company will
be  obligated to pay to USC  royalties  equal to 1% of any sales of the Products
and 50% of any royalties  earned by the Company from any  sublicensees.  Minimum
annual  royalties  are payable,  starting at $12,500 in 1998 and  increasing  to
$125,000 in 2001 and each year thereafter.

    USC is  obligated  under the USC License  Agreement to file,  prosecute  and
maintain certain United States patents and, if required by the Company, to file,
prosecute and maintain  foreign  patents.  The Company is obligated to reimburse
USC for the legal expense of patent prosecution,  plus a 15% administrative fee.
USC has no  obligation  to defend any of the  patents  while the Company has the
right to do so at its own expense  (with  certain  rights to offset a portion of
royalties  otherwise owing to USC). The Company has a first right to bring legal
action to enforce  the  patents,  and USC may bring such  action if the  Company
elects not to exercise its right. The USC License  Agreement also extends to the
Company  a  right-of-first-refusal  to  obtain an  option  and  license  for any
substantial  improvements to the subject technology  developed by Dr. McKenna on
the same terms and conditions as the USC License Agreement.

    In January 1997, the Company entered into a new research  agreement with USC
providing  for the grant by the Company of $176,000 to fund further  research on
Thiovir  through  September 30, 1997. See "BUSINESS -- Research and  Development
Status and Activities."

OTHER PRODUCTS

    The Company has no current plans or strategies  for  developing or acquiring
products  other than  Thiovir.  The Company  intends,  however,  to  investigate
potential  therapeutic  applications  of  Thiovir  other than the  treatment  of
HIV/AIDS and CMV,  some of which have been  suggested by in vitro  studies.  The
Company may explore  possibilities of developing or acquiring  medical products,
the 


                                       32







development and/or marketing of which would be compatible with the activities of
the Company with respect to Thiovir.  There can be no assurance that the Company
will be successful in such endeavors.

HEALTH CARE REFORM MEASURES AND THIRD PARTY REIMBURSEMENT

    The  business  and  financial  condition of  pharmaceutical  companies  will
continue to be affected by the efforts of governments  and third party payors to
contain or reduce the cost of health care  through  various  means.  A number of
legislative  and regulatory  proposals  aimed at changing the health care system
have been  proposed in recent  years.  In addition,  an  increasing  emphasis on
managed care in the United States has and will continue to increase the pressure
on pharmaceutical  pricing. While the Company cannot predict whether legislative
or regulatory  proposals will be adopted or the effect such proposals or managed
care efforts may have on its business,  the announcement and/or adoption of such
proposals or efforts could have a material adverse effect on the Company. In the
United States and elsewhere, sales of prescription pharmaceuticals are dependent
in part on the  availability of  reimbursement  to the consumer from third party
payors,   such  as  government   and  private   insurance   plans  that  mandate
predetermined  discounts from list prices.  Third party payors are  increasingly
challenging the prices charged for medical products and services. If the Company
succeeds in bringing  Thiovir to the market,  there can be no assurance  that it
will be considered cost effective or that  reimbursement to the consumer will be
available  or will be  sufficient  to allow the  Company  to sell  Thiovir  on a
competitive  and  profitable  basis.  See "RISK FACTORS -- Uncertainty of Health
Care Reform Measures and Third Party Reimbursement."

PERSONNEL

    The Company currently has two employees. The Company intends to utilize from
time to time the services of consultants and independent  contractors to provide
key functions that might  otherwise be provided by  Company-employed  personnel.
The  Company's  future  success  will  depend in large part upon its  ability to
attract and retain  highly  qualified  employees,  consultants  and  independent
contractors. See "RISK FACTORS -- Dependence on and Need to Hire Personnel."

LEGAL PROCEEDINGS

    The Company is not involved in any litigation.


                                       33






                                   MANAGEMENT

EXECUTIVE OFFICERS, DIRECTORS AND KEY CONSULTANTS

    The executive  officers,  directors and key  consultants  of the Company and
their ages, as of April 1, 1997, are as follows:

<TABLE>
<CAPTION>

                    NAME                       AGE                  POSITION
                    ----                       ---                  --------
<S>                                            <C>   <C>
Francis E. O'Donnell, Jr., M.D. ...........    47    Chairman of the Board, Chief Executive
                                                      Officer, Director and Founder

Nicholas Jon Virca ........................    50    President and Chief Operating Officer
Samuel P. Sears, Jr. ......................    53    Treasurer, Secretary and Director
Mary Anthony Gray .........................    49    Executive Vice-President
Emanuela I. Charlton, Ph.D.(1)(2) .........    63    Director and Consultant
Thomas Quinn (1)(2) .......................    47    Director
W. Howard Lewin, M.D. (1)(2) ..............    76    Director
Charles E. McKenna, Ph.D. .................    52    Consultant
Thomas D. Wolfe ...........................    48    Consultant
</TABLE>

- ------------
(1) Member of the Compensation Committee
(2) Member of the Audit Committee

   
    Each of the executive  officers (other than Mr. Virca) and directors  (other
than Dr. Lewin) assumed their  responsibilities  with the Company in 1996 at the
time of the Company's acquisition of a license of certain rights to Thiovir. Mr.
Virca became the Company's  President and Chief Operating Officer in March 1997.
Dr. Lewin became a director in December 1996.

    Each  director  elected by the  holders  of the  Company's  Common  Stock or
appointed  by the Board of  Directors to fill a vacancy on the Board shall serve
until the next  annual  meeting  and until  his or her  successor  has been duly
elected or appointed to the Board by the Board and qualified,  and is subject to
removal with or without cause by vote of a majority of the outstanding shares of
Common  Stock.  See  "DESCRIPTION  OF  SECURITIES  --  Delaware  Law and Certain
Certificate of Incorporation and Bylaw Provisions." Officers are elected by, and
serve at the  discretion  of, the Board.  No  director,  executive  officer,  or
significant employee or consultant is related by blood,  marriage or adoption to
any other director, executive officer, or significant employee or consultant.
    

    The  following  is a brief  summary  of the  background  of  each  director,
executive officer and key consultant of the Company:

    FRANCIS E.  O'DONNELL,  JR., M.D.,  Chairman of the Board,  Chief  Executive
Officer,  Director and Founder.  Since 1994, Dr.  O'Donnell has been the Medical
Director of the O'Donnell Eye Institute and a Clinical Professor,  Department of
Ophthalmology,  at the St. Louis  University  School of Medicine.  Dr. O'Donnell
also serves as  Chairman of the Board of  LaserSight,  Inc.,  a publicly  traded
corporation  which  manufactures  medical laser  equipment and provides  managed
medical care services.  Dr.  O'Donnell is a graduate of St. Louis University and
Johns Hopkins University School of Medicine and is a practicing ophthalmologist.

    NICHOLAS JON VIRCA,  President and Chief Operating Officer.  Mr. Virca began
his employment  with the Company in March 1997.  From 1991 to 1997, he served as
Vice  President  of  Operations  and  Co-Founder  of Diametrix  Detectors,  Inc.
("Diametrix"),  a privately held  immunosensor  company  focused on the airborne
vapor  detection of narcotics.  From 1991 to 1994, Mr. Virca also served as Vice


                                       34






President,  Business  Operations of IRT Corporation  ("IRT"),  a publicly traded
company that  specialized in x-ray inspection and imaging systems for industrial
and security applications.  From 1994 to 1997, Mr. Virca served as Business Unit
Manager, Security Products for Nicolet Imaging Systems, a company that purchased
substantially  all of IRT's assets in 1994. Mr. Virca received a B.A.  degree in
biology  from  Youngstown  State  University.  Mr. Virca  currently  serves as a
director of Diametrix.  Mr. Virca's prior experience  includes key marketing and
general  management  positions with Fisher  Scientific,  Damon Biotech,  Promega
Corp.,  the Ortho  Division of Johnson & Johnson and the Ross Division of Abbott
Laboratories.

    SAMUEL P. SEARS,  JR.,  Treasurer,  Secretary and Director.  Since 1994, Mr.
Sears has been  employed as the Chief  Executive  Officer and a director of Star
Tobacco Corporation,  a privately-owned  manufacturer of tobacco products.  From
1993 to 1994,  he served as "of  Counsel"  to the New York law firm of  LeBoeuf,
Lamb, Greene & MacRae.  Prior to 1993, Mr. Sears was the Managing Partner of the
Boston law firm of Burns & Levinson for over twelve years. He is also a director
of  Eye  Technology,  Inc.,  a  publicly-owned  corporation  which  manufactures
intraocular lenses used in cataract surgery.  Mr. Sears is a graduate of Harvard
College and Boston College Law School.

    MARY ANTHONY GRAY, Executive Vice President. Since 1991, Ms. Gray has served
as a  biomedical  technology  transfer  advisor to the  University  of  Southern
California.   Since  1986,  she  has  also  been  a  partner  of   BioStrategies
International,  a  technology  consulting  firm.  Ms.  Gray's  prior  experience
includes business  development and sales positions with the following companies:
Damon Biotech,  Inc.,  Ortho  Diagnostics  Division of Johnson & Johnson and the
J.T. Baker Instruments Division of Richardson-Merrill Pharmaceuticals.  Ms. Gray
holds B.S. and M.S. degrees from the University of Missouri.

    EMANUELA I.  CHARLTON,  PH.D.,  Director  and  Consultant.  Since 1994,  Dr.
Charlton  has  served  as the  Director  of  Regulatory  Affairs  of  LaserSight
Technologies,  Inc.,  a  manufacturer  of  excimer  and solid  state  lasers for
ophthalmic  purposes.  In  addition,  since 1991,  Dr.  Charlton has served as a
director of its parent company, LaserSight, Inc., a publicly traded corporation.
Since 1985, she has been the President of North American Health Resources, Inc.,
a medical  affairs  consulting  firm which she  founded.  Dr.  Charlton has held
positions,  primarily  in the fields of medical  regulatory  affairs and medical
research,  with the following  companies:  High Stoy Technological  Corporation,
Baxter-Travenol,  Inc.,  Searle  Laboratories,  Abbott  Laboratories  and Pfizer
Laboratories.  She holds B.A. and M.S.  degrees from New York  University  and a
Ph.D. degree from The Union Institute Graduate School.

    THOMAS QUINN,  Director.  Since 1995, Mr. Quinn has served as Vice President
of Development of Olsten  Kimberly  Quality Care, a managed health care company.
From 1992 to 1995,  Mr.  Quinn  was Vice  President,  Marketing  and  Sales,  of
Integrated  Health Services,  Inc., a managed health care company.  From 1989 to
1992,  he served as  President  of Infu Tech,  Inc.,  a national  home  infusion
therapy company. Mr. Quinn currently serves as a director of LaserSight, Inc., a
publicly-owned corporation. Mr. Quinn holds a B.S. degree from the University of
Pittsburgh.

    W.  HOWARD  LEWIN,  M.D.,  Director.  Since  1960,  Dr.  Lewin  has been the
President and Medical Director of Lewin & Milster Ophthalmology, Inc., a private
medical  practice.  In addition,  since 1975,  Dr. Lewin has been  employed as a
Clinical  Professor  of  Ophthalmology  at the St.  Louis  University  School of
Medicine.  Dr.  Lewin  received a B.A.  degree from  Central  College,  Fayette,
Missouri and an M.D. degree from the St. Louis University School of Medicine.

    CHARLES E. MCKENNA,  PH.D.,  Consultant.  Since 1989, Dr. McKenna has been a
Professor of Chemistry at USC. Dr. McKenna is the inventor of the two patents of
which the Company is the exclusive licensee, and he has directed the research of
TPFA conducted at USC pursuant to research grants formerly  provided by PerArdua
Investors,  L.P., the partnership  from which the Company  obtained the licenses
related to Thiovir.  Dr.  McKenna will serve as  consultant to the Company for a
period of time ending  three years after the date of the  Offering or until June
30, 2000,  whichever  first  occurs.  Dr.  McKenna  received a B.A.  degree from
Oakland University and a Ph.D. in Chemistry from the University of California at
San Diego.



                                       35





    THOMAS  D.  WOLFE,  Consultant.  Since  1993,  Mr.  Wolfe has been the Chief
Executive  Officer  of  Palmyra  Group,   Inc.,  a  company  providing  chemical
engineering process consulting services and related software services. From 1991
to  1993,  he was a  managing  director  of HPD,  Incorporated,  a  retailer  of
evaporization and crystallization  systems.  Mr. Wolfe was a founder of PerArdua
Investors,  L.P.  The Company  expects to engage the  services of Mr. Wolfe from
time to time to consult on manufacturing, marketing and other matters. Mr. Wolfe
received a B.A.  degree in Chemistry  from the  University  of California at San
Diego.

    Dr.  O'Donnell  and Mr.  Sears expect to devote  approximately  25% of their
business  time to the  affairs  of the  Company.  Ms.  Gray  expects  to  devote
approximately 80% of her business time to the affairs of the Company.  Mr. Virca
will be a full-time employee of the Company.

COMMITTEES OF THE BOARD OF DIRECTORS

    The Board has established an Audit  Committee and a Compensation  Committee,
each composed of at least two independent  directors.  Currently,  the Company's
three outside  directors,  Mr. Quinn, Dr. Lewin and Dr. Charlton,  serve on both
committees.  The Audit  Committee  will  recommend  the  annual  appointment  of
auditors,  with  whom the Audit  Committee  will  review  the scope of audit and
non-audit  assignments  and  related  fees,  accounting  principles  used by the
Company in financial reporting, internal auditing procedures and the adequacy of
the internal control procedures of the Company. The Compensation  Committee will
establish  salaries,  bonuses and other compensation for the Company's executive
officers and administer the Company's  Incentive Plan and other employee benefit
plans.

EXECUTIVE COMPENSATION AND OTHER INFORMATION

    Summary of Cash and Certain Other Compensation.  No executive officer of the
Company earned or received in excess of $100,000 for any fiscal year ended on or
prior to November 30, 1996. Dr. O'Donnell has not received any compensation from
the Company in any fiscal year.  As a group,  the Company's  executive  officers
(three individuals, only one of whom received or earned any compensation) earned
and received  $11,230  during the fiscal year ended  November  30, 1996,  and no
compensation during any prior period.

    Stock  Option  Grants.  On August 20,  1996 the  Company  issued  options to
purchase  10,000  shares of the  Company's  Common  Stock to Mary  Anthony  Gray
pursuant to the Incentive  Plan.  The options  granted have an exercise price of
$7.50 per share.  The options  granted to Ms. Gray vest on September 3, 1997 and
expire on  September 2, 2001.  The options were the only options  granted by the
Company in the 1996 fiscal year.

    Director Compensation. The Company's directors have not been compensated for
the services they provide to the Company.  Upon the  completion of the Offering,
the Company  plans to issue  options to acquire  10,000  shares of Common  Stock
pursuant to the Incentive Plan to each of Dr. Charlton,  Dr. Lewin and Mr. Quinn
at an exercise  price to be determined,  but not less than $5.00 per share.  The
Company's  directors  receive  reimbursement  for  any  out-of-pocket   expenses
incurred in attending meetings of the Company's Board.

    Employment  Contracts and  Termination of Employment  and  Change-in-Control
Arrangements.  On February 12,  1997,  the Company  entered  into an  employment
agreement  with Nicholas Jon Virca pursuant to which Mr. Virca will serve as the
Company's  President  and  Chief  Operating  Officer.   Mr.  Virca's  employment
agreement expires on February 29, 2000, unless earlier  terminated in accordance
with the terms  thereof.  Mr.  Virca will  receive a salary equal to $10,000 per
month. In addition,  upon the completion of the Offering, the Company will grant
to Mr. Virca options to purchase  100,000  shares of the Company's  Common Stock
pursuant to the Incentive Plan. The options will vest over a two year period and
will have an exercise price to be determined, but in no case less than $5.00 per
share.  Upon a change in control of the Company  (as defined in the  agreement),
the  employment  agreement  provides  Mr.  Virca the right to receive a lump sum
severance  payment upon termination of employment equal to (i) the lesser of six
month's salary or the amount of salary then  remaining  payable for the duration
of the  agreement's  term plus (ii) an amount  equal to the most recent  monthly
payment made by the Company for Mr. Virca's health and life insurance (including
family  coverage)  multiplied  by the  lesser  of six or the  number  of  months
remaining in the term of the agreement.



                                       36






    The Company has entered  into an  employment  agreement  with Ms. Gray which
provides for monthly  compensation  of $7,000.  This agreement will terminate on
February 29, 2000,  unless either party  terminates such agreement in accordance
with the terms thereof.  In addition,  upon the completion of the Offering,  the
Company  will  grant to Ms.  Gray  options  to  purchase  100,000  shares of the
Company's  Common Stock  pursuant to the Incentive  Plan.  The options will vest
over a three year period and will have an exercise price to be  determined,  but
in no case less than $5.00 per share.

    As of the date hereof, the Company has not entered into any other employment
contracts or any compensatory plans or arrangements relating to the resignation,
retirement  or other  termination  of any of the Company's  executive  officers.
Similarly,  as of the date of this Prospectus,  the Company has not entered into
any other  plan or  agreement  pursuant  to which an  executive  officer  of the
Company  will  receive  any funds upon a change in  control of the  Company or a
change in his or her responsibilities following a change-in-control.

    The  Company  has  entered  into  a  consulting   agreement   (the  "McKenna
Agreement")  with Charles E. McKenna,  Ph.D. which continues until September 30,
1999. The McKenna  Agreement  provides that Dr.  McKenna,  who is a Professor of
Chemistry at USC and who is the inventor of the two issued  patents to which the
Company holds an exclusive license from USC, will provide consulting services to
the Company  upon  matters  which  relate to the field of  chemistry  and to the
development  of  Thiovir,  subject to his  obligations  to USC.  The  Company is
obligated to pay Dr. McKenna a retainer of $5,000 for the period October 1, 1996
through  March 31, 1997,  $5,000 for the period April 1, 1997 through  September
30, 1997,  $12,500 for the period October 1, 1997 through September 30, 1998 and
$15,000 for the period October 1, 1998 through  September 30, 1999. In addition,
the Company will pay a fee to Dr.  McKenna for actual  services  rendered at the
rate  of  $1,000  per day or $600  per  half  day  and  will  reimburse  him for
out-of-pocket  expenditures  incurred in the  performance of his services to the
Company.  The  McKenna  Agreement  contains  (i) certain  restrictive  covenants
limiting Dr.  McKenna's right to engage in the development or  commercialization
of drugs that might compete with Thiovir, (ii) confidentiality  provisions,  and
(iii)  provisions   relating  to  the  assignment  to  the  Company  of  certain
inventions,  improvements and  modifications  made by him during the term of the
McKenna  Agreement.  The rights and  obligations  of the Company and Dr. McKenna
under the McKenna  Agreement are subject to Dr.  McKenna's  obligations  to USC,
which include  assignment of all rights to intellectual  property he develops in
his area of  expertise  and  restrictions  on the  amount of time he  devotes to
consulting  activities.  Dr. McKenna is also the principal  investigator  in the
ongoing  research   concerning  Thiovir  being  conducted  under  the  Company's
sponsored  research  agreement with USC. See "BUSINESS -- Relationship with USC"
and "CERTAIN TRANSACTIONS."

INCENTIVE PLAN

    On July 5, 1996,  the Board  adopted  and the  stockholders  of the  Company
approved the  Company's  Incentive  Plan.  The  Incentive  Plan provides for the
granting   to   employees,   officers,   directors,   consultants   and  certain
non-employees  of the Company of (i) options to purchase  shares of Common Stock
and (ii) stock  appreciation  rights  ("SARs").  The maximum number of shares of
Common Stock that may be issued pursuant to options and SARs under the Incentive
Plan is 500,000,  subject to  adjustment  in the event of a stock  split,  stock
dividend or other  change in the Common  Stock or the capital  structure  of the
Company.  The Incentive Plan will be administered by the Compensation  Committee
of the Board of Directors.  Subject to the provisions of the Incentive Plan, the
Compensation  Committee  will be authorized to determine who may  participate in
the  Incentive  Plan,  the  number and type of awards to each  participant,  the
schedule on which each award will become  exercisable and the terms,  conditions
and limitations  applicable to each award. The Compensation  Committee will have
the exclusive  power to interpret the Incentive Plan and to adopt such rules and
regulations  as  it  may  deem   necessary  or   appropriate   for  purposes  of
administering the plan. Subject to certain  limitations,  the Board of Directors
will be authorized to amend,  modify or terminate the Incentive Plan to meet any
changes in legal requirements or for any other purpose permitted by law.

    Options.  Options granted under the Incentive Plan may be either  "incentive
stock options" within the meaning of Section 422 of the Internal Revenue Code of
1986,  as amended,  or  non-qualified  options.  Incentive  stock options may be
granted  only  to  employees  of  the  Company  (including   directors  who  are
employees),   while  non-qualified   options  may  be  granted  to  non-employee
directors,  employees,  consultants,  advisors and other independent contractors
providing  services to the Company.  The per share  exercise


                                       37







price of the Common Stock subject to an option granted pursuant to the Incentive
Plan is  determined  by the  Compensation  Committee  at the time the  option is
granted. In the case of incentive stock options,  the exercise price must not be
less than 100% of the fair  market  value of the shares  covered  thereby at the
time the  incentive  stock  option  is  granted  (but in no event  less than par
value).  "Fair  market  value"  shall  be  determined  by the  Board,  or by its
designated  committee,  in good faith and using any reasonable method. No person
who owns,  directly or  indirectly,  at the time of the granting of an incentive
stock  option to him,  10% or more of the  total  combined  voting  power of all
classes of Common Stock (a "10%  Stockholder"),  shall be eligible to receive an
incentive  stock option under the  Incentive  Plan unless the option price is at
least 110% of the fair market value of the Common  Stock  subject to the option,
determined on the date of grant.  Non-qualified  options are not subject to this
limitation.

    No incentive  stock option may be  transferred  by an optionee other than by
will or the laws of descent  and  distribution,  and during the  lifetime  of an
optionee,  the option will be exercisable only by the optionee.  In the event of
termination of employment,  other than by death or permanent,  total disability,
the  optionee  will have three  months  after such  termination  to exercise the
option to the extent it was  exercisable on the date of such  termination.  Upon
termination  of  employment  of an  optionee  by  reason  of death or  permanent
disability,  an option remains exercisable for one year thereafter to the extent
it was  exercisable  on the  date of such  termination.  No  similar  limitation
applies to non-qualified options.

    Incentive stock options granted under the Incentive Plan cannot be exercised
more than 10 years from the date of grant,  except that incentive  stock options
issued to a 10% Stockholder are limited to five year terms.  All options granted
under the  Incentive  Plan may provide for the payment of the exercise  price in
cash,  by cash  equivalent  acceptable  to the  Company,  or by  delivery to the
Company of shares of Common Stock  already  owned by the optionee  having a fair
market value equal to the exercise price of the options being exercised, or by a
combination of such methods of payment.  Therefore, a participant may be able to
tender shares of Common Stock to purchase  additional shares of Common Stock and
may, theoretically,  exercise all of his or her stock options with no additional
investment other than his or her original shares.  Any unexercised  options that
expire or terminate become available once again for issuance.

    Stock  Appreciation  Rights.  Under the  Incentive  Plan,  the  Compensation
Committee  also may grant SARs  either in tandem  with an option or alone.  SARs
granted  in tandem  with a stock  option  may be granted at the same time as the
stock option or at a later time. A SAR entitles the  participant to receive from
the  Company  an amount  payable  in cash,  in  shares  of Common  Stock or in a
combination  of cash and Common Stock equal to the positive  difference  between
the fair market value of a share of Common Stock on the date of exercise and the
grant price.

    Tax  Consequences.  No income is recognized by a participant  at the time an
option is granted. If the option is an incentive stock option, no income will be
recognized upon the participant's  exercise of the option.  Income is recognized
by a participant  when he or she disposes of shares  acquired under an incentive
stock option. The exercise of a nonqualified stock option generally is a taxable
event that  requires the  participant  to  recognize,  as ordinary  income,  the
difference between the shares' fair market value and the option price. No income
is  recognized  upon the grant of an SAR. The exercise of an SAR  generally is a
taxable event. The participant generally must recognize income equal to any cash
that is paid and the fair  market  value of Common  Stock  that is  received  in
settlement of an SAR. The Company will be entitled to claim a federal income tax
deduction on account of the exercise of a nonqualified option or SAR. The amount
of the deduction is equal to the ordinary income  recognized by the participant.
The Company will not be entitled to a federal income tax deduction on account of
the grant or the exercise of an incentive stock option.  The Company may claim a
federal income tax deduction on account of certain  dispositions of stock issued
upon the exercise of an incentive stock option.

    Change  in  Control  Provisions.  In the  event  of a  "change  in  control"
transaction,  the Company's  Compensation  Committee may take any one or more of
the following  actions  either at the time an option or SAR is granted or at any
time  thereafter:  (i) provide for the acceleration of any time periods relating
to the exercise of any option or SAR so that such option or SAR may be exercised
in full on or before a date initially fixed by the Compensation Committee;  (ii)
provide for the purchase or  settlement  of any option or SAR by the Company for
an amount of cash equal to the amount  which could have been  obtained  upon the



                                       38






exercise of such option or SAR or realization of such  participant's  rights had
such  option or SAR been  currently  exercisable  or  payable;  (iii)  make such
adjustment to any option or SAR then outstanding as the  Compensation  Committee
deems appropriate to reflect such "change in control" transaction; or (iv) cause
any option or SAR then  outstanding  to be  assumed,  or new rights  substituted
therefor,  by the acquiring or surviving corporation in such "change in control"
transaction.   In  relation  to  the  Incentive  Plan,  a  "change  in  control"
transaction  is  defined to  constitute  any of the  following:  (i) a merger or
consolidation in which holders of outstanding  voting stock of the Company would
receive  less  than  50% of the  voting  stock  of the  surviving  or  resulting
corporation;  (ii) adoption by the Company of a plan of  liquidation or approval
of the dissolution of the Company;  (iii) the sale or transfer of  substantially
all of the assets of the Company;  or (iv) a tender offer or exchange  offer for
shares of Common  Stock of the  Company  other  than any such  offer made by the
Company or any corporation affiliated with the Company.

LIMITATION ON OFFICERS' AND DIRECTORS' LIABILITIES

    Pursuant to the  Company's  Certificate  of  Incorporation  and the Delaware
General  Corporation Law, directors of the Company are not liable to the Company
or its stockholders  for monetary  damages for breach of fiduciary duty,  except
for  liability in connection  with a breach of the duty of loyalty,  for acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of law, for dividend  payments or stock  repurchases or redemptions in
violation  of  Delaware  law,  or for any  transaction  in which a director  has
derived an improper personal benefit.

    The Company's Certificate of Incorporation  includes provisions to indemnify
its officers and directors and other persons against expenses,  judgments, fines
and  amounts  paid in  settlement  in  connection  with  threatened,  pending or
completed  suits or  proceedings  against  such  persons by reason of serving or
having served as officers, directors or in other capacities,  except in relation
to matters with respect to which such persons  shall be  determined  not to have
acted in good faith, lawfully or in the best interests of the Company. Except in
the event  indemnification  is ordered by a court, the Company's  Certificate of
Incorporation  provides for indemnification  only to the extent that the Company
determines  that such person  acted in good faith and in a manner not opposed to
the best interests of the Company. Upon completion of the Offering,  the Company
also intends to enter into  indemnification  agreements with its directors which
will  require  the Company to provide  certain  additional  indemnification  and
contribution to its directors, subject to certain limitations.

    Insofar as indemnification  for liabilities arising under 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  Commission  such  indemnification  is against public
policy as expressed in the Securities Act and is, therefore, unenforceable.

    Currently, there is no pending litigation or proceeding involving a director
or officer of the Company as to which  indemnification  is being sought,  nor is
the Company  aware of any  threatened  litigation  that may result in claims for
indemnification by any officer or director.



                                       39







                             PRINCIPAL STOCKHOLDERS

    The following table sets forth certain information  regarding the beneficial
ownership of the Common Stock as of the date of this  Prospectus and as adjusted
to reflect the sale of the Common Stock offered hereby of (i) each person who is
known by the  Company to own of record or  beneficially  more than five  percent
(5%) of the  Common  Stock,  (ii) each  director  and  executive  officer of the
Company  and (iii) all  directors  and  executive  officers  of the Company as a
group. Unless otherwise indicated,  each of the persons or entities listed below
has  sole  voting  and  investment  power  with  respect  to  all  shares  shown
beneficially  owned by them,  except  to the  extent  such  power is shared by a
spouse under applicable law.

<TABLE>
<CAPTION>
   

                                                                                       PERCENT OF SHARES
                                                                                          OUTSTANDING
                                                                                          -----------

                                                                     NUMBER OF       BEFORE         AFTER
NAME AND ADDRESS OF BENEFICIAL OWNER                                 SHARES(1)    OFFERING(1)    OFFERING(1)
- ------------------------------------                                 ---------    -----------    -----------
<S>                                                                  <C>          <C>            <C>
Francis E. O'Donnell, Jr., M.D.(2)(3)(4)                              280,000         10.6%           7.7%
Nicholas Jon Virca(2)                                                       0          *              *
Samuel P. Sears, Jr.(2)(4)                                             50,000          1.9            1.4
Thomas L. DePetrillo(4)(5)                                            387,500         14.7           10.6
Mary Anthony Gray(2)                                                  110,000          4.2            3.0
Charles E. McKenna, Ph.D.(6)                                          320,000         12.1            8.8
Thomas D. Wolfe(7)                                                    328,930         12.4            9.0
W. Howard Lewin M.D.(8)                                                 5,000          *              *
Thomas Quinn(9)                                                         5,000          *              *
Emanuela I. Charlton, Ph.D.(10)                                         5,000          *              *
MFC Merchant Bank, S.A.(11)                                           276,800         10.5            7.6
Yuan Lin(12)                                                          200,000          7.6            5.5
All Directors and Officers as a Group (7 persons)                     455,000         17.2           12.5
</TABLE>
    



 *  Less than 1%.

(1) Pursuant to the SEC rules,  shares of Common  Stock which an  individual  or
    group has the right to acquire  within 60 days  pursuant to the  exercise of
    warrants  or  options  are  deemed  to be  outstanding  for the  purpose  of
    computing the percentage  ownership of such individual or group, but are not
    deemed  to be  outstanding  for the  purpose  of  computing  the  percentage
    ownership of any other person in the table.

(2) The beneficial owner's address is c/o PerArdua  Corporation,  10940 Wilshire
    Boulevard, Suite 1600, Los Angeles, California 90024.

(3) Of such shares,  205,000 shares are held by Kathleen O'Donnell as trustee of
    the Irrevocable Trust #4 f/b/o Francis E. O'Donnell, Jr. In addition, 75,000
    shares are held by Kathleen O'Donnell as trustee of the Francis E. O'Donnell
    Descendants  Trust. Dr.  O'Donnell  disclaims  beneficial  ownership of such
    shares.

(4) All of such shares were originally issued to the beneficial owner or a prior
    owner of such shares when the Company's Missouri predecessor corporation was
    formed in 1988  under the name Home Test,  Inc.  These  shares  now  reflect
    ownership  in the  current  Delaware  corporation  into  which the  Missouri
    corporation was merged.

                                       40






(5) Includes 50,000 shares of Common Stock held by Mr. DePetrillo's  spouse. Mr.
    DePetrillo disclaims beneficial ownership of such shares. Mr. DePetrillo was
    a founder of Home Test,  Inc.  Mr.  DePetrillo  advised  the  Company in its
    acquisition  of rights to the drug  Thiovir,  but is no longer active in the
    business of the Company.  Mr.  DePetrillo's  address is 65 Peaked Rock Road,
    Narragansett, Rhode Island 02882.

(6) Dr. McKenna's address is 16625 Pequeno Place, Pacific Palisades,  California
    90272.

(7) Mr. Wolfe's address is 16288 Gleko Road, Rough and Ready, California 95975.

(8) Dr. Lewin's address is #8 Ridgecreek, St. Louis, Missouri 63141.

(9) Mr. Quinn's address is Nine Corland Trails, Mahwah, New Jersey 07430.

(10) Dr. Charlton's address is 619 Long Lake Drive, Oviedo, Florida 32765.

   
(11) The address of MFC Merchant  Bank,  S.A. is 13, route de  Florissant,  1206
     Geneva, Switzerland.
    

(12) Ms. Lin's address is 730 Willow Run Lane, Winter Springs, Florida 32708.

    The  table  above  does  not  contain  Outstanding  Warrants  issued  to the
individuals  referenced  therein,  which will become  exercisable  at a price of
$10.00 per share when the Company receives FDA approval for the sale of Thiovir.
In the event the fair market  value of the Common  Stock  exceeds  the  exercise
price of an Outstanding Warrant at the time of exercise, the holder may elect to
pay the exercise  price by  surrendering a portion of the shares of Common Stock
for which the Outstanding Warrant is exercisable determined in accordance with a
formula in lieu of paying the exercise price in cash. These Outstanding Warrants
have been issued as follows:

<TABLE>
<CAPTION>
   

               NAME                         NUMBER OF OUTSTANDING WARRANTS
               ----                         ------------------------------

<S>                                                             <C>
Francis E. O'Donnell, Jr., M.D.                                 150,000
Thomas L. DePetrillo                                            200,000
Thomas D. Wolfe                                                   8,930
</TABLE>
    


                                       41




              CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

   
    In August 1996, the Company issued to three of the then stockholders (one of
whom has no current  ownership  interest)  of the Company for no  consideration,
warrants to purchase an aggregate of 500,000 shares of Common Stock  exercisable
at a price of $10.00 per share when the Company  receives  FDA  approval for the
sale of Thiovir. The two current holders of these warrants that are stockholders
of the Company  are  Francis E.  O'Donnell,  Jr.,  M.D.,  who is Chairman of the
Board, Chief Executive Officer, Director and Founder of the Company (warrants to
purchase 150,000 shares of Common Stock);  and Thomas L.  DePetrillo,  who was a
founder of Home Test, Inc., the Company's predecessor  corporation,  and advised
the Company in its  acquisition of rights to the drug Thiovir,  but is no longer
active in the business of the Company  (warrants to purchase  200,000  shares of
Common Stock). See "MANAGEMENT" and "PRINCIPAL STOCKHOLDERS."
    

    Pursuant to an Option and Asset Purchase Agreement,  dated July 8, 1996 (the
"Acquisition  Agreement"),  the  Company  acquired  certain  rights of  PerArdua
Investors,  L.P., a California limited partnership (the "Limited  Partnership").
Prior to such  acquisition,  the Limited  Partnership was unaffiliated  with the
Company and had been formed and operated for the purpose of conducting  research
and  development  on Thiovir,  primarily  through  research  grants to USC.  The
Company  acquired  an  assignment  of  the  Limited   Partnership's  rights  and
obligations  under an Option and  License  Agreement  by and between the Limited
Partnership  and USC. See "BUSINESS --  Relationship  with USC." The Acquisition
Agreement granted to the Company, in consideration of $100,000, an option, which
was  exercised,  to acquire  the  rights for  $350,000  plus  reimbursement  for
specified  liabilities  which totaled  $90,000,  for a total  purchase  price of
$440,000.  Simultaneously  with the  closing  of the  acquisition  of the rights
pursuant to the Acquisition Agreement,  the Company entered into a Stockholders'
Agreement (the "Stockholders' Agreement") with all of its then stockholders, the
limited  partners of the Limited  Partnership  (the  "Limited  Partners"),  USC,
Charles E. McKenna, Ph.D., Mary Anthony Gray, and Thomas D. Wolfe, the latter of
whom was also a Limited Partner. See "MANAGEMENT" and "PRINCIPAL  STOCKHOLDERS."
Under  the terms of the  Stockholders'  Agreement,  the  Limited  Partners  were
granted  the right to  acquire  a total of  192,000  shares of Common  Stock and
192,000 Outstanding Warrants for total consideration of $192.00; USC was granted
the right to acquire 8,000 shares of Common Stock and 8,000 Outstanding Warrants
for total  consideration of $8.00; and Dr. McKenna,  Ms. Gray and Mr. Wolfe were
granted  the right to acquire  320,000,  110,000  and  320,000  shares of Common
Stock,  respectively,  for total consideration of $320.00, $110.00, and $320.00,
respectively.  All such rights to acquire shares of Common Stock and Outstanding
Warrants  were  exercised.  All  persons  to whom  shares  of  Common  Stock and
Outstanding  Warrants  were issued upon the exercise of such rights are entitled
to certain  registration  rights  with  respect to the Common  Stock  issued and
issuable  upon  exercise  of  the  Outstanding  Warrants.  See  "DESCRIPTION  OF
SECURITIES" -- Common Stock." Mr. Wolfe received,  as a Limited  Partner,  8,930
shares of Common Stock and 8,930 Oustanding  Warrants in addition to the 320,000
shares of Common Stock he acquired  directly from the Company.  Dr.  McKenna and
Mr. Wolfe are consultants to the Company,  and Ms. Gray is an executive  officer
of the Company. See "MANAGEMENT" and "PRINCIPAL STOCKHOLDERS."

    In January  1997,  the Company  entered into a Research  Agreement  with USC
providing for the grant by the Company to USC of $176,000 for continued research
and development of Thiovir. See "BUSINESS -- Relationship with USC." Dr. McKenna
is the  principal  investigator  under the  research  grant and, as such,  it is
expected that he will receive salary and other benefits,  estimated at less than
$25,000, funded by the Company's research grant. See "MANAGEMENT" and "PRINCIPAL
STOCKHOLDERS." In addition,  the Company has entered into a consulting agreement
with  Dr.  McKenna.  Pursuant  to  this  agreement,  Dr.  McKenna  will  provide
consulting  services  related to the  development  of Thiovir  for a term ending
September 30, 1999. The Company will pay Dr. McKenna a semi-annual  retainer and
an hourly fee in  consideration  of such services.  See "MANAGEMENT -- Executive
Compensation and Other Information."

    Samuel P.  Sears,  Jr., a director  and  executive  officer of the  Company,
received,  in June  1996,  50,000  shares of Common  Stock  from  certain  other
stockholders of the Company without paying any monetary  consideration  therefor
as an inducement  for Mr. Sears to become  involved  with the  management of the
Company. See "MANAGEMENT" and "PRINCIPAL STOCKHOLDERS."

                                       42





    Each of Emanuela I. Charlton, Ph.D., Thomas Quinn and W. Howard Lewin, M.D.,
directors of the Company,  received  5,000 shares of the Company's  Common Stock
from  certain   stockholders   of  the  Company   without  paying  any  monetary
consideration  therefor  as an  inducement  to  join  the  Company's  Board.  In
addition,  the Board intends to grant to each of Drs. Charlton and Lewin and Mr.
Quinn,  as of the date of completion of the Offering,  options to acquire 10,000
shares of Common Stock of the Company at an exercise price to be determined, but
in no case less than $5.00 per  share,  pursuant  to the terms of the  Company's
Incentive Plan.

    The Company believes that all of the  transactions  noted above were made on
terms no less  favorable  to the  Company  than  could have been  obtained  from
unaffiliated third parties.

    All future  transactions  between the Company and its  officers,  directors,
principal  stockholders  and their  respective  affiliates  will be  approved in
accordance with the Delaware General Corporation Law by a majority of the Board,
including a majority  of the  independent  and  disinterested  directors  of the
Board,  and will be on terms no less  favorable  to the  Company  than  could be
obtained from unaffiliated third parties.

                                       43






                         DESCRIPTION OF SECURITIES

    The  following  summary  description  of  the  Company's  capital  stock  is
qualified  in  its  entirety  by  reference  to  the  Company's  Certificate  of
Incorporation.

COMMON STOCK

    The Company is authorized to issue up to 25,000,000  shares of Common Stock,
$.01 par value per share. As of the date of this Prospectus, 2,643,440 shares of
Common Stock are issued and  outstanding  and held by 51 stockholders of record.
Upon the  completion of the Offering,  3,643,440  shares of Common Stock will be
outstanding.

    The holders of Common  Stock are entitled to one vote for each share held of
record  on  each  matter  submitted  to a  vote  of  stockholders.  There  is no
cumulative voting for election of directors, with the result that the holders of
more than fifty  percent of the shares  voting for the election of directors can
elect all of the directors  elected by the holders of Common  Stock.  Subject to
the prior rights of any series of Preferred Stock which may from time to time be
outstanding,  if any,  holders of Common Stock are  entitled to receive  ratably
such  dividends as may be declared by the Board out of funds  legally  available
therefor  and in the event of  liquidation,  dissolution,  or  winding up of the
Company,  are entitled to share ratably in all assets remaining after payment of
liabilities and payment of accrued dividends and liquidation  preferences on the
Preferred Stock, if any.  Holders of Common Stock have no preemptive  rights and
have no rights to convert their Common Stock into any other  securities.  All of
the outstanding shares of Common Stock are, and the shares of Common Stock to be
outstanding upon completion of the Offering will be, validly issued,  fully paid
and nonassessable.

   
    Prior  to  the  Offering,   the  Company's  current  principal  stockholders
beneficially owned approximately 74.7% of the outstanding shares of Common Stock
of the Company.  Subsequent to the Offering,  the  Company's  current  principal
stockholders will beneficially own 54.2% of the outstanding shares of the Common
Stock of the  Company  (52.1%  if the  Underwriters'  over-allotment  option  is
exercised in full).  As a result,  subject to the voting rights of any series of
Preferred  Stock,  they will  likely be able to control  all  matters  requiring
approval  by  the  stockholders  of  the  Company,  including  the  election  of
directors.
    

    Upon the  completion of the  Offering,  holders of  approximately  2,343,440
shares of Common Stock  (including the shares  issuable upon the exercise of the
Outstanding  Warrants)  will be entitled to certain  rights with  respect to the
registration  of such  shares  under the  Securities  Act,  subject  to  certain
limitations. If the Company proposes to register any of its securities under the
Securities  Act, either for its own account or for the account of other security
holders exercising  registration  rights, such holders are entitled to notice of
such  registration and are entitled to include shares therein.  These rights are
subject  to  certain   conditions  and   limitations,   including,   in  certain
circumstances,  the right of the underwriters of an offering to limit the number
of shares included in such registration or exclude all shares.

   
    The  holders  of the  Representatives'  Warrants  also  have the right for a
period beginning one year after the effective date of this Prospectus and ending
four years thereafter,  to include shares of Common Stock issuable upon exercise
of the  Representatives'  Warrants or the  Redeemable  Warrants  underlying  the
Representatives' Warrants (the "Underlying Securities") as part of certain other
registered offerings of securities commenced by the Company. In addition,  for a
period beginning one year after the effective date of this Prospectus and ending
four years thereafter, upon written demand of holders representing a majority of
the  Representatives'  Warrants,  the Company has agreed,  on one  occasion,  to
promptly  register the  Underlying  Securities  at the Company's  expense.  Upon
receipt of such a request,  the  Company  has agreed to use its best  efforts to
file a registration  statement registering the Underlying  Securities.  Finally,
for a period  beginning one year after the effective date of this Prospectus and
ending  four years  thereafter,  upon  written  demand of any  holder(s)  of the
Representatives'  Warrants, the Company has agreed, on one occasion, to promptly
register the Underlying Securities solely at the expense of such holder(s).
    

                                       44





REDEEMABLE WARRANTS

    The following  summary  description of certain  provisions of the Redeemable
Warrants  is  believed  to reflect all  material  provisions  of the  Redeemable
Warrants,  but is not necessarily  complete and reference is made to the Warrant
Agreement  (the  "Warrant  Agreement")  by and between the Company and  American
Securities Transfer & Trust, Inc. (the "Transfer Agent").  The Warrant Agreement
has  been  filed as an  exhibit  to the  Registration  Statement  of which  this
Prospectus is a part for a detailed description thereof.

    Each Redeemable Warrant entitles the holder thereof to purchase one share of
Common  Stock at an  exercise  price of $6.50 per share.  Unless the  Redeemable
Warrants  are  redeemed  as  provided  below,  the  Redeemable  Warrants  may be
exercised at any time on or before          , 2002, at which time the Redeemable
Warrants expire.

    The Redeemable Warrants are redeemable by the Company at $.20 per Redeemable
Warrant upon 30 days prior written notice, provided that the average closing bid
price of the Common Stock equals or exceeds $9.00 per share for a 20 consecutive
day trading period ending within 10 days prior to the notice of redemption.  For
purposes of the Warrant Agreement, "average closing bid price" is defined as the
closing  bid price as quoted  on the  Nasdaq  SmallCap  Market.  The  Redeemable
Warrants  may not be  redeemed  unless they are then  exercisable  and a current
prospectus  covering  the  Redeemable  Warrants  and the shares of Common  Stock
issuable  thereunder  is then in effect.  The  Redeemable  Warrants  will remain
exercisable  until the close of business on the fifth  business day prior to the
date of redemption.  Redemption of the Redeemable Warrants may force the holders
to exercise the Redeemable Warrants and pay the exercise price at a time when it
may be disadvantageous  for them to do so or sell the Redeemable Warrants at the
current  market price when they might  otherwise  desire to hold the  Redeemable
Warrants.

    Upon the exercise of the  Redeemable  Warrants more than one year after this
Offering and to the extent not inconsistent  with the guidelines of the National
Association of Securities  Dealers,  Inc., and the rules and  regulations of the
Commission, the Company has agreed to pay the Representatives a commission equal
to five percent of the exercise price of the Redeemable  Warrants.  However,  no
compensation will be paid to the Representatives in connection with the exercise
of the Redeemable  Warrants if (a) the market price of the underlying  shares of
Common Stock is lower than the exercise price,  (b) the Redeemable  Warrants are
exercised in an unsolicited transaction, or (c) the Redeemable Warrants are held
in any discretionary accounts and (d) advance disclosure is made to a Redeemable
Warrant holder. In addition,  unless granted an exemption by the Commission from
Regulation M under the Exchange Act, the Representatives will be prohibited from
engaging in any market making activities or solicited brokerage  activities with
regard to the Company's  securities  for a period of one to five days before the
solicitation of the exercise of any Redeemable Warrant or before the exercise of
any Redeemable Warrant based upon a prior  solicitation,  until the later of the
termination  of such  solicitation  activity  or the  termination  by  waiver or
otherwise  of any right the  Representatives  may have to  receive a fee for the
exercise of the Redeemable Warrants following such solicitation.

    The holders of the  Redeemable  Warrants  will not have any of the rights or
privileges of  stockholders  of the Company (except to the extent they otherwise
own  Common  Stock)  prior  to the  exercise  of the  Redeemable  Warrants.  The
Redeemable  Warrants  will be  entitled  to the  benefit of  adjustments  in the
exercise price and in the number of shares of Common Stock  deliverable upon the
exercise  thereof  upon the  occurrence  of certain  events,  including  a stock
dividend, stock split or similar reorganization.

    In order for a holder to  exercise  a  Redeemable  Warrant,  there must be a
current  registration  statement on file with the  Commission  and various state
securities  commissions  to register the shares of Common Stock  underlying  the
Redeemable Warrants for sale to the holder of the Redeemable  Warrant.  Pursuant
to Section  10(a)(3) of the Securities  Act, the  information  contained in this
Prospectus will be deemed "stale" nine months from the date of this  Prospectus.
The Company has agreed, so long as the Redeemable  Warrants are outstanding,  to
use its best  efforts  to keep a  registration  statement  effective  under  the
Securities Act and state securities laws to permit the issuance of the shares of


                                       45







Common Stock upon exercise or exchange of the Redeemable Warrants. Nevertheless,
although  the  Company  intends  to do so, no  assurance  can be given  that the
registration  statement will be kept current, the failure of which may result in
the  Redeemable  Warrants not being  exercisable or  exchangeable  and therefore
worthless.

   
REPRESENTATIVES' WARRANTS

    In  connection  with this  Offering,  the  Company has agreed to sell to the
Representatives,  at a price of $.001 per warrant, warrants to purchase from the
Company  100,000  shares of Common Stock and 100,000  Redeemable  Warrants  (the
"Representatives' Warrants"). The Representatives' Warrants are exercisable at a
price of $8.00 per share of Common Stock and $.16 per  Redeemable  Warrant (160%
of the respective  initial public offering price of the Securities) for a period
of four years  commencing one year from the effective  date of this  Prospectus.
The shares of Common Stock and the Redeemable Warrants issuable upon exercise of
the  Representatives'  Warrants are identical to those offered hereby except for
the exercise prices and that the Redeemable Warrants contained therein cannot be
redeemed.

    The Company has agreed to  register,  at its expense,  under the  Securities
Act, the  Underlying  Securities at the request of a majority in interest of the
holders thereof.  Such request may be made at any time during a period beginning
one year after the  effective  date of this  Prospectus  and  ending  four years
thereafter.  In addition,  for a period  beginning  one year after the effective
date of this Prospectus and ending four years thereafter, upon written demand of
any holder(s) of the Representatives'  Warrants,  the Company has agreed, on one
occasion,  to promptly  register  the  Underlying  Securities  for purposes of a
public  offering,  solely at the expense of such  holder(s).  The  Company  also
granted the  Representatives  "piggyback"  registration  rights  concerning  the
Representatives'  Warrants and the Underlying  Securities which may be exercised
at any time during a period  beginning one year after the effective date of this
Prospectus and ending four years thereafter.

    For the term of the  Representatives'  Warrants,  the holder thereof has the
opportunity  to  profit  from  a rise  in  the  market  price  of the  Company's
securities  which may result in a dilution of the interest of the  stockholders.
The Company may find it more difficult to raise additional  equity capital if it
should be needed for the  business  of the  Company  while the  Representatives'
Warrants are outstanding. At any time when the holders thereof might be expected
to exercise it, the Company would probably be able to obtain  additional  equity
capital on terms more  favorable  than those  provided  by the  Representatives'
Warrants.   See  "RISK   FACTORS  --   Representatives'   Warrants  and  Ongoing
Relationship with Schneider."
    

PREFERRED STOCK

    The  Company is  authorized  to issue up to  1,000,000  shares of  Preferred
Stock,  $.01 par value per share, none of which are issued and outstanding as of
the date of this  Prospectus.  The Preferred  Stock may be issued in one or more
series,  the terms of which may be  determined  at the time of  issuance  by the
Board, without further action by the stockholders, and may include voting rights
(including the right to vote as a series on particular matters),  preferences as
to dividends and  liquidation,  conversion,  redemption  rights and sinking fund
provisions.  The Company has no present  plans for the issuance of any shares of
Preferred  Stock.  The  issuance of any such  Preferred  Stock could  reduce the
rights, including voting rights, of the holders of Common Stock, and, therefore,
reduce the value of the Common Stock. In particular,  specific rights granted to
future  holders of  Preferred  Stock  could be used to  restrict  the  Company's
ability to merge with or sell its assets to a third  party,  thereby  preserving
control of the Company's existing management. See "RISK FACTORS -- Anti-takeover
Effects of Certificate of Incorporation, Bylaws and Delaware Law."

DELAWARE LAW AND CERTAIN CERTIFICATE OF INCORPORATION AND BYLAW PROVISIONS

    Certain  provisions of the Delaware  General  Corporation Law, the Company's
Certificate of  Incorporation,  Bylaws and the Incentive  Plan, may be deemed to
have an  anti-takeover  effect and may delay,  defer or prevent a hostile tender
offer or takeover  attempt that a stockholder  might consider in his or her best
interest,  including  those  attempts  that might  result in a premium  over the
market price for the shares held by stockholders.

                                       46







DELAWARE ANTI-TAKEOVER LAW

   
    Section 203 of the Delaware General  Corporation Law ("Section 203") applies
to a  Delaware  corporation  with a class of voting  stock  listed on a national
securities exchange, authorized for quotation on an interdealer quotation system
or held of record by 2,000 or more persons. In general,  Section 203 prevents an
"interested  stockholder"  (defined generally as any person owning, or who is an
affiliate or associate of the  corporation  and has owned in the preceding three
years,  15  percent  or more of a  corporation's  outstanding  voting  stock and
affiliates  and  associates  of  such  person)  from  engaging  in  a  "business
transaction"  (as defined  therein) with a Delaware  corporation for three years
following  the date such  person  became an  interested  stockholder  unless (1)
before such person became an interested  stockholder,  the board of directors of
the corporation approved either the business combination or the transaction that
resulted  in the  stockholder  becoming  an  interested  stockholder;  (2)  upon
consummation  of the  transaction  which resulted in the interested  stockholder
becoming an interested stockholder, the interested stockholder owned at least 85
percent  of the  voting  stock of the  corporation  outstanding  at the time the
transaction  commenced  (excluding stock held by directors who are also officers
of the  corporation  and by employee  stock plans that do not provide  employees
with the right to determine  confidentially  whether  shares held subject to the
plan will be tendered in a tender or exchange offer); or (3) on or subsequent to
the date such person became an interested stockholder,  the business combination
is approved by the board of directors of the  corporation  and  authorized  at a
meeting of stockholders by the affirmative  vote of the holders of two-thirds of
the  outstanding  voting stock of the  corporation  not owned by the  interested
stockholder. Under Section 203, the restrictions described above do not apply to
certain business  combinations  proposed by an interested  stockholder following
the  announcement or notification of one of certain  extraordinary  transactions
involving  the  corporation  and  a  person  who  had  not  been  an  interested
stockholder  during  the  previous  three  years  or who  became  an  interested
stockholder with the approval of a majority of the corporation's directors.
    

STOCKHOLDER ACTION BY WRITTEN CONSENT

   
    The  Certificate  of  Incorporation  provides  that no  action  required  or
permitted to be taken at an annual or special meeting of the stockholders of the
Company may be taken without a meeting.
    

ADVANCE NOTICE REQUIREMENTS FOR STOCKHOLDER PROPOSALS AND DIRECTOR
NOMINATIONS

   
    The Company's  Bylaws  provide that  stockholders  seeking to bring business
before an annual meeting of stockholders, or to nominate candidates for election
as directors at an annual  meeting of  stockholders  (an "Annual  Meeting") or a
special meeting of stockholders called for the purpose of electing directors (an
"Election Special  Meeting"),  must provide timely notice thereof in writing and
be present at such meeting, either in person or by representative. For the first
Annual Meeting following the Offering, a stockholder's notice shall be timely if
delivered  to,  or mailed to and  received  by,  the  Company  at its  principal
executive  office not later than the close of  business  on the later of (A) the
75th day prior to the scheduled  date of such Annual Meeting or (B) the 15th day
following  the day on  which  public  announcement  of the  date of such of such
Annual Meeting is first made by the Company. For all subsequent Annual Meetings,
a  stockholder's  notice  shall be  timely  if  delivered  to,  or mailed to and
received by, the Company at its principal executive office not less than 75 days
nor  more  than  120  days  prior  to the  anniversary  date of the  immediately
preceding Annual Meeting (the "Anniversary Date");  provided,  however,  that in
the event the Annual Meeting is scheduled to be held on a date more than 30 days
before the Anniversary  Date or more than 60 days after the Anniversary  Date, a
stockholder's  notice shall be timely if delivered to, or mailed to and received
by, the Company at its  principal  executive  office not later than the close of
business  on the later of (A) the 75th day prior to the  scheduled  date of such
Annual  Meeting  or  (B)  the  15th  day  following  the  day  on  which  public
announcement  of the date of such Annual  Meeting is first made by the  Company.
For an Election  Special  Meeting,  a  stockholders'  notice  shall be timely if
delivered  to,  or mailed to and  received  by,  the  Company  at its  principal
executive  office not later than the close of business on the 15th day following
the day on  which a public  announcement  of the  date of the  Election  Special
Meeting  is first  made by the  Company.  These  provisions  may  preclude  some
stockholders  from bringing matters before the stockholders at an Annual Meeting
or from making nominations for directors at an Annual Meeting.
    

                                       47






   
AMENDMENTS TO CERTIFICATE OF INCORPORATION AND THE BYLAWS

    The Company's  Certificate of Incorporation  and Bylaws provide that subject
to the rights of the holders of Preferred  Stock,  the majority of all directors
or the vote of holders of two-thirds of the  outstanding  stock entitled to vote
is required  to alter,  amend or repeal the Bylaws;  provided,  however,  if the
Board  has  previously  recommended  the  action  to be taken  to the  Company's
stockholders,  the affirmative  vote of a majority of the stockholders may amend
or repeal the Company's Bylaws. The Company's  Certificate of Incorporation also
provides that, subject to the rights of the holders of Preferred Stock, the vote
of holders of two-thirds of the  outstanding  stock entitled to vote is required
to  alter,   amend,   or  repeal  certain   provisions  of  the  Certificate  of
Incorporation.
    

TRANSFER AGENT AND REGISTRAR

    American Securities Transfer & Trust, Inc. will serve as the Company's
transfer agent and registrar.





                                       48





                               UNDERWRITING

   
    The  underwriters  named  below  (the  "Underwriters"),  for whom  Schneider
Securities,   Inc.   and   Lew   Lieberbaum   &  Co.,   Inc.   are   acting   as
co-representatives,  have severally agreed,  subject to the terms and conditions
of the Underwriting Agreement (the form of which has been filed as an exhibit to
the Registration Statement), to purchase from the Company the respective numbers
of shares of Common Stock and Redeemable Warrants set forth opposite their names
in the table below. The Underwriting  Agreement provides that the obligations of
the  Underwriters  are  subject to  certain  conditions  precedent  and that the
Underwriters  shall be  obligated  to purchase all of the shares of Common Stock
and Redeemable Warrants, if any are purchased.

<TABLE>
<CAPTION>

                                                 NUMBER OF SHARES         NUMBER OF
                     NAME                         OF COMMON STOCK    REDEEMABLE WARRANTS
                     ----                         ---------------    -------------------

<S>                                               <C>                <C>
Schneider Securities, Inc.

Lew Lieberbaum & Co., Inc.
                                                  ---------            -----------
   TOTAL                                          1,000,000            1,000,000
</TABLE>

    Through the  Representatives,  the  several  Underwriters  have  advised the
Company that they propose to offer the shares of Common Stock and the Redeemable
Warrants to the public at the initial  public  offering  prices set forth on the
cover of this Prospectus. The Representatives have advised the Company that they
may allow to certain  dealers  concessions of not in excess of $.25 per share of
Common Stock and $.005 per Redeemable  Warrant,  of which a sum not in excess of
$.13 per share of Common Stock and $.0025 per Redeemable  Warrant may in turn be
reallowed by such dealers to other dealers.  After the issuance of the shares of
Common  Stock  and  Redeemable   Warrants,   the  public  offering  prices,  the
concessions  and the  reallowances  may be  changed.  The  Representatives  have
further  advised  the  Company  that they do not expect  sales to  discretionary
accounts  to exceed  five  percent  of the total  number of  Securities  offered
hereby.

    The  Company  has  agreed to pay to the  Representatives  a  non-accountable
expense  allowance equal to three percent of the total proceeds of the Offering,
of which $50,000 has already been paid.
    

    The Company has granted an option to the  Underwriters,  exercisable  during
the 45-day period following the effective date of the Underwriting Agreement, to
purchase up to 150,000 shares of Common Stock and/or 150,000 Redeemable Warrants
at the  offering  price  less  underwriting  discounts  and the  non-accountable
expense  allowance.  The  Underwriters  may exercise such option only to satisfy
over-allotments  in the  sale of the  shares  of  Common  Stock  and  Redeemable
Warrants.

   
    Upon the exercise of the  Redeemable  Warrants  more than one year after the
Offering and to the extent not inconsistent  with the guidelines of the National
Association of Securities  Dealers,  Inc., and the rules and  regulations of the
Commission, the Company has agreed to pay the Representatives a commission equal
to five percent of the exercise price of the Redeemable  Warrants.  However,  no
compensation will be paid to the Representatives in connection with the exercise
of the Redeemable  Warrants if (a) the market price of the underlying  shares of
Common Stock is lower than the exercise price,  (b) the Redeemable  Warrants are
exercised in an unsolicited transaction, or (c) the Redeemable Warrants are held
in any discretionary  accounts. In addition,  unless granted an exemption by the
Commission   from   Regulation  M  promulgated   under  the  Exchange  Act,  the
Representatives will be prohibited from engaging in any market making activities
or solicited brokerage  activities with regard to the Company's securities for a
period  of one or five days  before  the  solicitation  of the  exercise  of any
Redeemable Warrant or before the exercise of any Redeemable Warrant based upon a
prior  solicitation,  until the later of the  termination  of such  solicitation
activity  or  the   termination   by  waiver  or  otherwise  of  any  right  the
Representatives or any other soliciting  broker-dealer may have to receive a fee
for the exercise of the Redeemable Warrants following such solicitation.

    In  connection  with the  Offering,  the  Company  has agreed to sell to the
Representatives, for nominal consideration, the Representatives' Warrants, which
confer  the right to  purchase  up to 100,000  shares of Common  Stock and up to
100,000  Redeemable  Warrants.  The  Representatives'   Warrants  are  initially



                                       49






exercisable  at the price  (the  "Exercise  Price") of $8.00 per share of Common
Stock and $.16 per  Redeemable  Warrant (160% of the  respective  initial public
offering  prices)  for a period  of four  years  commencing  one  year  from the
effective  date of this  Prospectus.  The shares of Common Stock and  Redeemable
Warrants issuable upon exercise of the  Representatives'  Warrants are identical
to those  offered  hereby.  The  Representatives'  Warrants  contain  provisions
providing  for  adjustment  of the  Exercise  Price and the  number  and type of
securities  issuable  upon the exercise  thereof upon the  occurrence of certain
events.  The  Representatives'  Warrants  grant to the holders  thereof  certain
demand and "piggyback"  rights of  registration of the securities  issuable upon
the exercise  thereof upon the occurrence of certain  events  beginning one year
after the date of this Prospectus.

    The Company has agreed to enter into a three-year  consulting agreement with
Schneider, pursuant to which Schneider will act as a financial consultant to the
Company,  commencing upon the closing date of the Offering.  Schneider will make
available qualified personnel for this purpose. The consulting fee of $3,000 per
month  for a period  of 36  months  is  payable  in full at the  closing  of the
Offering.

    Certain  principal  stockholders  and the Company  have agreed  that,  for a
period of 12  months  from the date of this  Prospectus,  they will not sell any
securities  (except for shares of Common  Stock  issued  pursuant to exercise of
options  which may be granted  under the  Incentive  Plan and for shares  issued
pursuant   to  the   exercise   of  the   Redeemable   Warrants)   without   the
Representatives'   prior  written  consent,  which  shall  not  be  unreasonably
withheld.
    

    The Underwriting Agreement provides for reciprocal  indemnification  between
the Company and the Underwriters  against certain liabilities in connection with
the Registration Statement, including liabilities under the Securities Act.

    The foregoing  summary of certain  provisions of the Underwriting  Agreement
summarizes all of the material  provisions of the  Underwriting  Agreement,  but
does not purport to be a complete  statement of all of its terms and conditions.
A copy of the  Underwriting  Agreement  is on file  with  the  Commission  as an
exhibit to the Registration Statement of which this Prospectus is a part.

   
    Prior to the Offering,  there has been no public market for the  Securities.
The initial public  offering prices of the shares of Common Stock and Redeemable
Warrants  will  be  determined  by  negotiations  between  the  Company  and the
Representatives  and  are  not  necessarily  related  to the  Company's  assets,
earnings,  or book value or any other  established  criteria  of value.  Factors
considered in  determining  the initial  public  offering price of the shares of
Common Stock and Redeemable  Warrants included estimates of business  potential,
financial condition,  future prospects,  gross proceeds to be raised, percentage
of stock  owned by  officers  and  directors  on the  date  hereof,  the type of
business  in which the  Company  engages,  and an  assessment  of the  Company's
management.  The foregoing factors were evaluated in light of the existing state
of the securities market.
    




                                       50



                        SHARES ELIGIBLE FOR FUTURE SALE

    Upon completion of the Offering,  the Company will have 3,643,440  shares of
Common Stock outstanding (3,793,440 shares, if the Underwriters'  over-allotment
option is exercised in full).  Of these  shares,  the 1,000,000  shares  offered
hereby will be freely tradable without further registration under the Securities
Act.
   
    Up to 200,000  additional  shares of Common  Stock may be  purchased  by the
Representatives  after the first  anniversary  of this  Prospectus  through  the
exercise of the Representatives' Warrants and the Redeemable Warrants underlying
the Representatives' Warrants. Any and all shares of Common Stock purchased upon
exercise of the Representatives' Warrants may be freely tradable,  provided that
the  Company  satisfies  certain   securities   registration  and  qualification
requirements in accordance with the terms of the Representatives'  Warrants. See
"UNDERWRITING."
    

    All of the  presently  outstanding  2,643,440  shares  of  Common  Stock are
"restricted securities" within the meaning of Rule 144 of the Securities Act and
will be  eligible  for  sale in the  public  market  in  reliance  upon,  and in
accordance with, the provisions of Rule 144.

    In  general,  Under Rule 144 as  currently  in effect,  a person (or persons
whose  shares  are  aggregated),  including  a person who may be deemed to be an
"affiliate"  of the Company as that term is defined  under the  Securities  Act,
will be  entitled  to sell  within  any  three-month  period a number  of shares
beneficially  owned for at least two years that does not  exceed the  greater of
(i) 1% of the then  outstanding  shares of  Common  Stock,  or (ii) the  average
weekly  trading  volume in the  Common  Stock  during  the four  calendar  weeks
preceding  such  sale.  Sales  under  Rule  144  are  also  subject  to  certain
requirements as to the manner of sale,  notice,  and the availability of current
public  information  about the Company.  However,  a person who is not deemed to
have been an  affiliate  of the Company  during the 90 days  preceding a sale by
such person,  and who has  beneficially  owned the shares of Common Stock for at
least three years, may sell such shares without regard to the volume,  manner of
sale, or notice requirements of Rule 144.

   
    Prior to this  Offering,  there has been no public  market for the Company's
Securities.  Following this Offering,  the Company cannot predict the effect, if
any,  that  sales of Common  Stock  pursuant  to Rule 144 or  otherwise,  or the
availability of such shares for sale,  will have on the market price  prevailing
from  time  to  time.  Nevertheless,   sales  by  the  current  stockholders  of
substantial  amounts of Common Stock in the public market could adversely affect
prevailing market prices for the Common Stock. In addition, the availability for
sale of a substantial  amount of Common Stock  acquired  through the exercise of
the Redeemable Warrants or the Representatives'  Warrants could adversely affect
prevailing market prices for the Common Stock. The Company's officers, directors
and certain holders of 5% of the outstanding  shares of Common Stock have agreed
not to sell the  shares  beneficially  owned by such  persons  during a 12 or 13
month period following the date of this Prospectus  (except for shares of Common
Stock that are subject to the  Underwriters  over-allotment  option) without the
Representatives'  consent. In addition,  the Company has agreed that it will not
issue any shares of Common Stock during a 13 month period  following the date of
this Prospectus without the Representatives' written consent.
    



                                       51



                                 LEGAL MATTERS

    The  validity of shares of Common Stock  offered  hereby will be passed upon
for the Company by LeClair Ryan, A Professional Corporation, Richmond, Virginia,
and  certain  matters  for the  Underwriters  by  William  M.  Prifti,  Esquire,
Lynnfield, Massachusetts.

                                  EXPERTS

    The financial statements of the Company as of November 30, 1996 appearing in
this  Prospectus  and  Registration  Statement  have been audited by McGladrey &
Pullen,  LLP,  independent  auditors,  as set  forth  in  their  report  thereon
appearing  elsewhere  herein  and in the  Registration  Statement  and have been
included  herein in reliance  upon such report given upon the  authority of such
firm as experts in accounting and auditing.

                           AVAILABLE INFORMATION

    The Company has filed with the Commission a  Registration  Statement on Form
SB-2 (as amended from time to time and together  with all exhibits and schedules
thereto, the "Registration  Statement") under the Securities Act with respect to
the Common Stock and the  Redeemable  Warrants to be sold in the Offering.  This
Prospectus constitutes a part of the Registration Statement and does not contain
all the  information  set forth  therein,  certain  portions  of which have been
omitted as permitted by the rules and regulations of the Commission.  Statements
contained in this Prospectus as to the content of any contract or other document
are not  necessarily  complete,  and in each instance,  reference is made to the
copy of such contract or other document filed as an exhibit to the  Registration
Statement,  each  such  statement  being  qualified  in  all  respects  by  such
reference.

    For further  information  regarding  the  Company,  the Common Stock and the
Redeemable Warrants to be sold in the Offering,  reference is hereby made to the
Registration  Statement.  A copy of the  Registration  Statement,  including the
exhibits and schedules thereto, may be inspected by anyone without charge at the
Public  Reference  Section of the Commission at Room 1024,  Judiciary Plaza, 450
Fifth Street, N.W., Washington, D.C. 20549 and at the following Regional Offices
of the Commission:  New York Regional Office, 7 World Trade Center,  13th Floor,
New York, New York 10048; and Chicago Regional Office,  500 West Madison Street,
Suite 1400, Chicago,  Illinois 60661.  Copies of the Registration  Statement and
the exhibits and  schedules  thereto can be obtained  from the Public  Reference
Section of the  Commission  upon  payment of  prescribed  fees.  In addition the
Commission  maintains a Web site that contains  reports,  proxy and  information
statements,  and other information  regarding  issuers that file  electronically
with the Commission. Such information can be accessed free of charge (other than
costs  associated with acquiring access to the Internet) at the Commission's Web
site (http://www.sec.gov).

    Prior to filing the  Registration  Statement of which this  Prospectus  is a
part, the Company was not subject to the reporting requirements of Section 13 or
15(d) of the Securities  Exchange Act. Upon  effectiveness  of the  Registration
Statement,  the Company will become  subject to the  informational  and periodic
reporting  requirements of the Exchange Act, and in accordance  therewith,  will
file  periodic  reports,   proxy  statements  and  other  information  with  the
Commission.  Such periodic reports,  proxy statements and other information will
be available for inspection and copying at the public  reference  facilities and
other regional  officers  referred to above. The Company intends to register the
Securities  offered  by  the  Registration  Statement  under  the  Exchange  Act
simultaneously  with the  effectiveness  of the  Registration  Statement  and to
furnish  its  stockholders  with annual  reports  containing  audited  financial
statements  and  quarterly  reports for the first three  quarters of each fiscal
year containing unaudited interim financial information.

    The  shares  of Common  Stock  and the  Redeemable  Warrants  registered  in
connection  with the  Offering  will be listed on the  Nasdaq  SmallCap  Market.
Reports  and other  information  required  to be filed  with such  market may be
inspected at the offices of the Nasdaq SmallCap  Market at 1735 K Street,  N.W.,
Washington, D.C. 20006.


                                       52









                              PERARDUA CORPORATION
                          (A DEVELOPMENT STAGE COMPANY)
                          INDEX TO FINANCIAL STATEMENTS


<TABLE>
<CAPTION>
                                                                        PAGE
                                                                        ---- 
<S>                                                                     <C>
Independent Auditor's Report ......................................      F-2
Financial Statements:
   Balance Sheet ..................................................      F-3
   Statement of Activities ........................................      F-4
   Statement of Stockholders' Equity ..............................      F-5
   Statement of Cash Flows ........................................      F-6
   Notes to Financial Statements ..................................      F-7
</TABLE>


                                      F-1






                          INDEPENDENT AUDITOR'S REPORT

To the Board of Directors
 PERARDUA CORPORATION
 Petersburg, Virginia

    We have audited the  accompanying  balance sheet of PerArdua  Corporation (a
development  stage company) as of November 30, 1996, and the related  statements
of activities,  stockholders  equity, and cash flows for the period from July 5,
1996, date of inception,  to November 30, 1996.  These financial  statements are
the responsibility of the Company's management. Our responsibility is to express
an opinion on these financial statements based on our audit.

    We  conducted  our audit in  accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit 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 audit provides a reasonable basis for our opinion.

    In our opinion,  the financial  statements referred to above present fairly,
in all material respects,  the financial position of PerArdua  Corporation as of
November 30, 1996,  and the results of its activities and its cash flows for the
period from July 5, 1996, date of inception,  to November 30, 1996 in conformity
with generally accepted accounting principles.

    The accompanying  financial  statements have been prepared assuming that the
Company  will  continue  as a  going  concern.  As  discussed  in  Note 2 to the
financial statements, the Company has suffered losses from its development stage
activities;  the  Company's  operations  will consist  primarily of research and
development  activities  over the next several  years;  and the Company does not
expect  operating  profits or significant  cash flows from operating  activities
during that period. This raises substantial doubt about the Company's ability to
continue as a going concern.  Management's  plans in regard to these matters are
also  described  in  Note  2.  The  financial  statements  do  not  include  any
adjustments that might result from the outcome of this uncertainty.



                                            MCGLADREY & PULLEN, LLP




Richmond,  Virginia 
January 24, 1997, except
for Note 6 as to which
the date is April 9, 1997



                                      F-2








                              PERARDUA CORPORATION
                          (A DEVELOPMENT STAGE COMPANY)
                                  BALANCE SHEET


<TABLE>
<CAPTION>
                                                                             NOVEMBER 30,   FEBRUARY 28,
                                                                                 1996           1997
                                                                             ------------   ------------  
                                                                                            (UNAUDITED)
<S>                                                                          <C>            <C>
                                                 ASSETS
Current Assets:
   Cash and cash equivalents                                                 $   495,421    $   213,029
   Prepaid expenses                                                                             106,459
   Deferred offering costs                                                        29,718        171,106
                                                                             -----------    -----------
       Total current assets                                                      525,139        490,594
Equipment                                                                                         5,875
Organization costs, net of amortization                                            6,866          6,156
                                                                             -----------    -----------
                                                                             $   532,005    $   502,625
                                                                             ===========    ===========  
         
                                  LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
   Accounts payable                                                          $    20,036    $    57,231
   Accrued expenses                                                                1,482          2,001
                                                                             -----------    -----------
       Total current liabilities                                                  21,518         59,232
                                                                             -----------    -----------

Stockholders' Equity:
   Preferred Stock, par value $.01 per share, 1,000,000 shares
     authorized, none issued
   Common  Stock,  par value $.01 per  share,  25,000,000 
     authorized  2,593,440 issued and outstanding at
     November 30, 1996 (2,643,440 at February 28, 1997)                           25,934         26,434
   Additional paid-in capital                                                  2,609,739      2,644,743
   Deficit accumulated during the development stage                           (2,090,690)    (2,227,784)
   Subscription receivable                                                       (34,496)
                                                                             -----------    -----------
       Total stockholders' equity                                                510,487        443,393
                                                                             -----------    -----------
                                                                             $   532,005    $   502,625
                                                                             ===========    ===========
</TABLE>

                    See Notes to Financial Statements.

                                      F-3





                              PERARDUA CORPORATION
                          (A DEVELOPMENT STAGE COMPANY)
                             STATEMENT OF ACTIVITIES



<TABLE>
<CAPTION>
                                                             PERIOD FROM                               PERIOD FROM
                                                          JULY 5, 1996, DATE     THREE MONTHS      JULY 5, 1996, DATE
                                                           OF INCEPTION, TO          ENDED          OF INCEPTION, TO
                                                          NOVEMBER 30, 1996    FEBRUARY 28, 1997    FEBRUARY 28, 1997
                                                          -----------------    -----------------    -----------------
                                                                                            (UNAUDITED)
<S>                                                          <C>                  <C>                  <C>
Revenue:
   Interest income                                           $      1,858         $    2,475           $     4,333
                                                             ------------         ----------           -----------
Expense:
   Research and development                                     2,058,980             73,249             2,132,229
   General and administrative                                      33,568             66,320                99,888
                                                             ------------         ----------           -----------
                                                                2,092,548            139,569             2,232,117
                                                             ------------         ----------           -----------

       Net loss                                              $ (2,090,690)        $ (137,094)          $(2,227,784)
                                                             ============         ==========           ===========
Net loss per common share                                    $       (.81)        $    (0.05)          $     (0.86)
                                                             ============         ==========           ===========   
Weighted average common shares                                  2,593,440          2,593,996             2,593,668
                                                             ============         ==========           =========== 
</TABLE>
                    See Notes to Financial Statements.



                                      F-4





                              PERARDUA CORPORATION
                          (A DEVELOPMENT STAGE COMPANY)
                        STATEMENT OF STOCKHOLDERS' EQUITY




<TABLE>
<CAPTION>
                                  
                                                                    (DEFICIT)
                                                                   ACCUMULATED
                                  COMMON STOCK                      ADDITIONAL   DURING THE       STOCK
                                  ------------                       PAID-IN     DEVELOPMENT   SUBSCRIPTION
                                 SHARES     AMOUNT     CAPITAL        STAGE       RECEIVABLE       TOTAL
                                 ------     ------     -------        -----       ----------       -----
<S>                             <C>          <C>      <C>          <C>            <C>           <C>
Stock issued at inception
  retroactively restated to
  reflect 41 2/3 to 1 stock
  split declared on July 5,
  1996                         1,000,000    $ 10,000  $    90,200  $               $             $   100,200

Issuance (valued at $1.60
  per share) for cash and
  acquisition of technology      950,000       9,500    1,510,500                                  1,520,000

Issuance (at $1.60 per share)
  for cash, net of issuance
  costs of $48,527               643,440       6,434    1,009,039                    (34,496)        980,977

Net loss                                                            (2,090,690)                   (2,090,690)
                               ---------     -------   ----------  -----------     ---------     -----------       
Balance, November 30, 1996     2,593,440     $25,934   $2,609,739  $(2,090,690)    $ (34,496)    $   510,487
  (Unaudited)

Issuance (at $1.60 per
  share) for cash, net
  of costs of $10,000             50,000         500       35,004                     34,496          70,000
Net loss                                                              (137,094)                     (137,094)
                               ---------     -------   ----------  -----------     ---------      ----------      
Balance, February 28, 1997     2,643,440     $26,434   $2,644,743  $(2,227,784)    $       0      $  443,393
                               =========     =======   ==========  ===========     =========      ==========       
</TABLE>
                    See Notes to Financial Statements.


                                       F-5





                              PERARDUA CORPORATION
                          (A DEVELOPMENT STAGE COMPANY)
                             STATEMENT OF CASH FLOWS




<TABLE>
<CAPTION>
                                                             PERIOD FROM                               PERIOD FROM
                                                          JULY 5, 1996, DATE     THREE MONTHS      JULY 5, 1996, DATE
                                                           OF INCEPTION, TO          ENDED          OF INCEPTION, TO
                                                          NOVEMBER 30, 1996    FEBRUARY 28, 1997    FEBRUARY 28, 1997
                                                          -----------------    -----------------    -----------------
                                                                                            (UNAUDITED)
<S>                                                           <C>                  <C>                 <C>
Development stage activities:
   Net loss                                                  $(2,090,690)          $(137,094)          $(2,227,784)
   Adjustments to reconcile net loss to net cash used in
     development stage activities:     
       Amortization                                                  237                 710                   947
       Charges to expense for value of stock issued for
        technology                                             1,519,050                                 1,519,050
       Change in operating assets and liabilities:
          Increase in prepaid expenses                                              (106,459)             (106,459)
          Increase (decrease) in accounts payable and
           accrued expenses                                       21,518             (19,517)                2,001
             Net cash used in development stage activities      (549,885)           (262,360)             (812,245)
                                                             -----------           ---------           -----------
Investing activities:
   Equipment purchases                                                                (5,875)               (5,875)
   Organization costs                                             (7,103)                                   (7,103)
                                                             -----------           ---------           -----------
             Net cash used in investing activities                (7,103)             (5,875)              (12,978)
                                                             -----------           ---------           -----------
Financing activities:
   Proceeds from issuance of common stock                      1,130,654              80,000             1,210,654
   Offering costs                                                (78,245)            (94,157)             (172,402)
                                                             -----------           ---------           -----------
             Net cash provided by financing activities         1,052,409             (14,157)            1,038,250
                                                             -----------           ---------           -----------
Net increase (decrease) in cash                                  495,421            (282,392)              213,029
Cash, beginning of period                                                            495,421
                                                             -----------           ---------           -----------
Cash, end of period                                          $   495,421           $ 213,029            $  213,029
                                                             ===========           =========            ==========
</TABLE>

                    See Notes to Financial Statements.


                                      F-6




                              PERARDUA CORPORATION
                          (A Development Stage Company)

                         NOTES TO FINANCIAL STATEMENTS

NOTE 1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    Nature of Business:  PerArdua  Corporation (the Company) was incorporated in
1988. The Company was a "shell" corporation, i.e. without assets or liabilities,
until July 1996, when the Company  acquired from PerArdua  Investors,  L.P. (the
Limited  Partnership)  a license  to  certain  patent  rights  to a drug  called
"Thiovir".  The Company's  operations  will focus on the  development and United
States Food and Drug  Administration  (FDA) approval of Thiovir for treatment of
HIV/AIDS  patients and patients  showing active  infection of the  opportunistic
virus cytomegalovirus (CMV) and, ultimately, commercial sale of the product.

    The  Company  is in the  development  stage.  Its major  activities  through
November  30, 1996 have been  limited to  acquiring a  licensing  agreement  and
conducting  research  and  development  related to its  proposed  product and to
obtaining  equity  capital.  These  activities  have not generated any recurring
revenues;   accordingly,  the  accompanying  financial  statements  include  the
disclosures  required by  Statement  of  Financial  Accounting  Standard  No. 7,
"Accounting and Reporting by Development Stage Enterprises".

    Accounting Estimates:  The preparation of financial statements in conformity
with  generally  accepted  accounting  principles  requires  management  to make
estimates  and  assumptions  that  effect  the  reported  amounts  of assets and
liabilities and disclosures 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:  Cash and  cash  equivalents  includes  all cash
balances and highly liquid investments with a purchased maturity of three months
or less.  The Company  places its temporary  cash  investments  with high credit
quality  financial  institutions.  At November  30,  1996,  the Company had cash
balances in excess of insured limits.

    Research and Development: Research and development costs are expensed
as incurred.

    Income Taxes:  The Company  accounts for income taxes in accordance with the
provisions of Statement of Financial  Accounting  Standard No. 109,  "Accounting
for Income Taxes," which  utilizes an asset and liability  approach to financial
accounting  and reporting for income taxes.  Deferred tax assets are  recognized
for  deductible  temporary  differences  and operating loss and tax credit carry
forwards;   deferred  tax  liabilities  are  recognized  for  taxable  temporary
differences.  Temporary differences are the differences between reported amounts
of assets and  liabilities  and their tax bases.  Deferred income tax assets and
liabilities that will result in taxable or deductible  amounts in the future are
based  on  enacted  laws and  rates  applicable  to the  periods  in  which  the
differences  are expected to affect  taxable  income.  Valuation  allowances are
established  when necessary to reduce deferred tax assets to the amount expected
to be  realized.  The  income  tax  provision  or credit is the tax  payable  or
refundable for the period plus or minus the change during the period in deferred
tax assets and liabilities.

    Net Loss Per Common Share:  Net loss per common share is computed based upon
the weighted  average  number of common shares  outstanding  during the year. As
further  explained  in Note 3, the  Company is in the process of  preparing  its
initial public  offering (IPO) of common stock and warrants.  In accordance with
Securities  and Exchange  Commission  Staff  Accounting  Bulletin  Topic 4D, the
weighted  average  number of common shares  outstanding  includes for the entire
year, all common shares issued below the anticipated IPO price per share.

    Deferred Offering Costs:  Costs incurred in connection with the proposed IPO
have been  deferred  as of  November  30,  1996.  If the IPO is  completed,  the
deferred  offering costs will be deducted from the proceeds and charged  against
additional  paid-in  capital.  If the IPO is not  completed,  such costs will be
charged to operations.



                                      F-7




                              PERARDUA CORPORATION
                          (A Development Stage Company)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)



NOTE 1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES --
         (CONTINUED)

    Interim Financial Information: The balance sheet as of February 28, 1997 and
the related statements of activities,  stockholders'  equity, and cash flows for
the three  months  then  ended and the  cumulative  amounts  from  inception  to
February  28, 1997 have been  prepared by the  Company,  without  audit.  In the
opinion of management,  all  adjustments  (which  include only normal  recurring
adjustments)  necessary to present fairly the financial position at February 28,
1997 and the  results  of  activities  and cash  flows for the  interim  periods
presented have been made. The statement of activities for the three months ended
February 28, 1997 is not  necessarily  indicative  of the results to be expected
for the full year.

NOTE 2. GOING CONCERN CONSIDERATIONS AND BASIS OF PRESENTATION

    The accompanying  financial statements have been prepared in conformity with
generally accepted  accounting  principles which contemplate the continuation of
the Company as a going  concern.  However,  during the period from July 5, 1996,
date of  inception,  to  November  30,  1996,  the  Company  incurred  a loss of
$2,090,690.  Such loss was funded  through  proceeds  received  from issuance of
common stock.  Management  believes that the Company's  operations  will consist
primarily of research and  development  activities  over the next several years,
and therefore,  it does not expect the Company to generate  operating profits or
significant cash flows from operating  activities  during that period. To obtain
the  additional  funds it needs to continue its research  activities  at planned
levels during the fiscal year ending November 30, 1997, management believes that
the  Company  will  need  substantial  funds  from  debt  obligations  or equity
financing,  such as its proposed IPO.  Management  cannot provide any assurances
that the Company will be able to obtain such financing.  These  conditions raise
substantial  doubts about the Company's  ability to continue as a going concern.
The accompanying financial statements do not include any adjustments relating to
the  recoverability  and classification of recorded asset amounts or the amounts
and classifications of liabilities that might be necessary should the Company be
unable to continue as a going concern.

NOTE 3. PROPOSED IPO

    On October 24,  1996,  the Company and an  investment  banking firm signed a
letter of intent  whereby the  investment  banking firm agreed to underwrite the
Company's IPO, which is expected to consist of 1,000,000  shares of common stock
at $5.00 per share.  Additionally,  the letter of intent  calls for  issuance of
1,000,000  redeemable warrants at a price of $.10 each with an exercise price of
$6.50 per share of common  stock for a period of 60 months  commencing  thirteen
(13) months from the  effective  date.  The warrants  will be  redeemable by the
Company  commencing  thirteen  (13) months from the  effective  date at $.20 per
warrant,  provided that the average closing bid price of the common stock equals
or exceeds $9.00 per share for 20 consecutive trading days.

    The letter of intent includes an over-allotment option which would allow for
the Underwriter to purchase securities, up to an additional 15% of the offering,
for a period of forty-five (45) days following the effective date solely for the
purpose of covering  any short  position in the  offering.  The Company has also
agreed  to sell  the  underwriter,  for  nominal  consideration,  five  (5) year
warrants  to  purchase  ten  percent  (10%) of the  number of  securities  being
underwritten.  These  warrants will be  exercisable  any time during a period of
four  (4)  years  commencing  one  year  from the  effective  date of the  final
prospectus at a price equaling 160% of the IPO price.

NOTE 4. STOCKHOLDERS' EQUITY

    On July 5, 1996, the Board of Directors and stockholders approved amendments
to the  Company's  Articles  of  Incorporation  that (i) changed the name of the
Company from Home Test Inc. to PerArdua  Corporation;  (ii) converted the no par
common stock to common stock with a par value of $0.001 per



                                      F-8




                              PERARDUA CORPORATION
                          (A Development Stage Company)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)

NOTE 4. STOCKHOLDERS' EQUITY -- (CONTINUED)

share;  (iii) increased the total number of authorized common shares from 30,000
to 10,000,000;  and (iv) ordered that each share of Home Test Inc. no par common
stock be exchanged for 41 2/3 shares of PerArdua  Corporation  common stock, par
value of $0.001 per share.

    Effective   January  1997,   the  Company  was  merged  with  and  into  its
wholly-owned subsidiary PerArdua Corporation,  a Delaware corporation.  The sole
purpose of the merger was to change the Company's  jurisdiction of incorporation
from Missouri to Delaware.  As a result of the merger,  the  surviving  Delaware
corporation  assumed  all of the  assets and  liabilities  of the  Company,  and
holders of shares of common stock in the Missouri  corporation became holders of
the same number of shares of common stock in the Delaware  corporation;  the par
value of common stock was changed from $.001 per share to $.01 per share; common
stock  authorization  was increased to 25,000,000 shares and 1,000,000 shares of
$.01 par value Preferred Stock were authorized for future issuance.

    The  changes in the par value of the common  stock and the stock  split have
been retroactively  reflected in the accompanying financial statements and these
notes for the period from inception.

    On August 20, 1996, the Company issued 500,000  warrants for the purchase of
the Company's common stock. The warrants grant the holders the right to purchase
additional  shares of common stock at an exercise price of $10.00 per share. The
warrants can be exercised in whole or in part, from time to time,  following FDA
approval, with a final expiration date of June 30, 2006.

    On October 4, 1996, pursuant to a Private Placement Memorandum, dated August
20,  1996,  the Company  completed  an offering of 665,000  shares of its common
stock at $1.60 per share.  Net  proceeds to the Company were  $1,015,473,  after
related expenses of $48,527.

    During the private  placement  offering the Company  accepted a subscription
from an investor for 21,560 shares of common stock. The total  consideration for
this  subscription  was  $34,496  and has  been  recognized  as an  increase  to
additional paid in Capital.

    On August  20,  1996 the Board of  Directors  approved  the sale of  950,000
shares of common stock and warrants to purchase an additional  200,000 shares of
common stock. As more fully discussed in Note 5 below, the shares were valued at
$1.60 per share,  although the Company only received cash consideration of $.001
per  share  ($950).  The  warrants  grant  the  holders  the  right to  purchase
additional  shares of common stock at an exercise price of $10.00 per share. The
warrants can be exercised in whole or in part, from time to time,  following FDA
approval, with a final expiration date of June 30, 2006.

    The Board of Directors and the  stockholders of the Company approved a stock
incentive plan (the Incentive Plan) during 1996. The plan provides for grants of
incentive  stock  options or stock  appreciation  rights  only to the  Company's
employees and nonqualified  stock options and stock  appreciation  rights to the
Company's  employees,  directors,  members of the  advisory  board,  independent
contractors  or  consultants  of the Company.  The Company has reserved  500,000
shares of common stock for issuance  under the Plan. The purchase price for each
share to be awarded or sold and the exercise  price and the term for each option
or stock  appreciation  right to be  granted  under the  Incentive  Plan will be
determined by the Board of Directors or its Compensation Committee.

    On August 20, 1996 the Board of Directors  granted an officer of the Company
an option under the Incentive Plan to purchase  10,000 shares of common stock at
an  exercise  price of $7.50 per share.  The option will vest one year after the
date  employment  commences and will remain in effect for a period of five years
unless employment is terminated earlier.



                                      F-9




                              PERARDUA CORPORATION
                          (A Development Stage Company)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)

NOTE 5. OPTION AND LICENSE AGREEMENT

    Pursuant to an agreement,  dated July 8, 1996 (the  Acquisition  Agreement),
the Company  acquired  certain rights from the Limited  Partnership.  The rights
acquired   consist  of  an  exclusive   license  to  certain  patent  and  other
intellectual property rights related to the drug, Thiovir.

    The Limited Partnership's sole activity was to receive capital contributions
and fund  research  and  development  of  Thiovir  from  1994 to  1996,  without
receiving any revenue. Expenditures incurred by the partnership were as follows:


<TABLE>
<CAPTION>
                                            RESEARCH AND
                                             DEVELOPMENT    OTHER       TOTAL
                                             -----------    -----       -----
<S>                                           <C>          <C>         <C>
1994 ......................................   $164,000     $12,000     $176,000
1995 ......................................     71,000      15,000       86,000
1996 ......................................     53,000      42,000       95,000
                                              --------     -------    ---------
                                              $288,000     $69,000     $357,000
                                              ========     =======     ========                 
</TABLE>

    The license rights are pursuant to a license  agreement  between the Limited
Partnership  and the  University of Southern  California  (USC) (the USC License
Agreement),  the rights and obligations of which were transferred by the Limited
Partnership  to the  Company  through  an  Assignment,  Assumption  and  Consent
Agreement  among the Company,  the Limited  Partnership and USC. The USC License
Agreement contains an exclusive worldwide license to practice the inventions set
forth in any relevant patents and patent applications of USC related to Thiovir.
In return,  the  Limited  Partnership  funded  development  of  Thiovir  through
research grants to USC. Funding of the research is now the responsibility of the
Company.  Subsequent to November 30, 1996,  the Company signed an agreement with
USC  providing for $ 176,000 of research  funding for the project.  The research
period will be  effective  through  September  30,  1997,  at which time USC can
request an eight month extension period at no additional cost to the Company.

    Consideration  paid by the  Company  to the  Limited  Partnership  under the
Acquisition  Agreement  consisted of $540,000 cash,  which included  $100,000 of
cash  received  from the initial  stockholders  and $440,000 paid out of the net
proceeds  of the  private  offering  (see  Note 4).  Additionally,  the  limited
partners,  together  with  USC and  three  individuals  who have  been  actively
involved in the  development  of Thiovir,  were  extended  the right,  which was
exercised,  to acquire  950,000  shares of the  Company's  common stock for $950
($.001 per share) along with warrants to purchase 200,000  additional  shares at
$10.00  per share  through  June 30,  2006.  These  warrants  will  only  become
exercisable  upon FDA approval of Thiovir.  The 950,000  shares  issued for $950
were valued at $1.60 per share as determined by the per share amount received in
the private  offering  completed  several  months  after the  completion  of the
transactions contemplated by the Acquisition Agreement.

    Charges  resulting from cash paid ($540,000) and shares issued  ($1,519,000)
under the  Acquisition  Agreement  were  recorded  as research  and  development
expense  since Thiovir is still in an early stage of  development.  The drug has
undergone  certain  laboratory  and  animal  studies,  but  must  still  undergo
successful further studies, as well as in human clinical trials, all pursuant to
protocols yet to be approved by the FDA, in order to be commercially marketable.

    The  Acquisition  Agreement  also contains a provision  whereby the purchase
price shall be adjusted  upward in the event that the Company should sell all or
any  portion of its rights in Thiovir in  consideration  of  $5,000,000  or more
prior to the filing of a registration  statement for its IPO. In that event, the
purchase price payable to the Limited  Partnership by the Company shall be equal
to 49% of the sales proceeds.


                                      F-10




                              PERARDUA CORPORATION
                          (A Development Stage Company)

                   NOTES TO FINANCIAL STATEMENTS - (Continued)

NOTE 5. OPTION AND LICENSE AGREEMENT -- (CONTINUED)

    Pursuant to the USC License Agreement (and subsequent Assignment, Assumption
and Consent Agreement), the Company will be obligated to pay royalties to USC in
conjunction  with future sales and to reimburse USC for legal  expenses that may
be incurred in connection  with patent  prosecution  and defense.  Royalties are
payable  equal to 1% of sales of the  products and 50% of any  royalties  earned
from  sublicensees.  Minimum annual royalties are payable starting at $12,500 in
1998, increasing to $125,000 in 2001 and each year thereafter.

NOTE 6. EMPLOYMENT AND CONSULTING AGREEMENTS

    On August 20, 1996 the  Company's  Board of  Directors  approved and entered
into a  Consulting  Agreement  with one of its  stockholders  for  research  and
development  activities.  The  agreement's  term  is to be for the  period  from
October 1, 1996 until  September  30, 1999 and requires  retainers of $5,000 for
the period  October 1, 1996 through March 31, 1997,  $5,000 for the period April
1, 1997  through  September  30,  1997,  $12,500 for the period  October 1, 1997
through  September 30, 1998,  and $15,000 for the period October 1, 1998 through
September  30, 1999 and a per diem of $1,000 for each full day and $600 for each
half day of consulting services provided to the Company.

    On February 12, 1997, the Company entered into an employment  agreement with
an  individual  who will serve as the Company's  President  and Chief  Operating
Officer.  The agreement expires on February 29, 2000, unless earlier  terminated
in accordance  with the terms  thereof,and  provides for a salary of $10,000 per
month. In addition, upon completion of the Proposed IPO, the Company is to grant
the President  options to purchase  100,000 shares of the Company's Common Stock
pursuant to the Incentive Plan. The options will vest over a two year period and
will have an exercise  price to be determined,  but in no case less,  than $5.00
per share.

    The Company has also entered into an employment agreement with a stockholder
which provides for monthly  compensation  of $7,000.  This agreement  expires on
February  29, 2000,  unless  earlier  terminated  in  accordance  with the terms
thereof.  In addition,  upon  completion  of the Proposed IPO, the Company is to
grant the stockholder options to purchase 100,000 shares of the Company's Common
Stock  pursuant to the Incentive  Plan.  The options will vest over a three year
period and will have an  exercise  price to be  determined,  but in no case less
than $5.00 per share.

NOTE 7. INCOME TAXES

    At November 30, 1996, the Company had net operating loss (NOL) carryforwards
available to reduce future taxable income, if any, of approximately  $37,710 for
federal  and state  income  tax  reporting  purposes  that  expire in 2011.  The
Company's  ability  to utilize  the NOL will also be  subject  to annual  limits
established by Internal Revenue Code Section 382.

The net operating loss  carryforward and a temporary  difference of $540,000 for
rights acquired under the Acquisition Agreement (see Note 5) could have resulted
in the recognition of deferred tax assets of approximately  $217,000 at November
30,  1996.  However,  due  to  the  uncertainties   inherent  in  the  Company's
operations,  the  deferred  tax assets and the  related tax  benefits  have been
offset by a valuation  allowance  in the same amount and  accordingly,  have not
been reflected in the accompanying financial statements.

    Research and development expense of $1,519,000,  represented by the value of
common stock issued  under the  Acquisition  Agreement,  is not  deductible  for
income tax purposes.


                                      F-11









                                    GLOSSARY

    The following are  definitions of certain  medically-oriented  terms used in
this  Prospectus.  Unless the context  otherwise  requires,  the following terms
shall have the meanings set forth below for the purposes of this Prospectus:

    "AIDS"  means  acquired   immunodeficiency   syndrome,  which  results  from
infection with HIV.

   
    "Bone  Marrow  Toxicity"  means  having a toxic  effect  which  inhibits the
ability of bone marrow to produce blood cells.

    "Central  Intravenous Device" means a device surgically inserted into one of
the  primary   arteries  of  the  heart  to  maintain  a  permanent   route  for
administration of fluids and medicines.

    "CMV" means  cytomegalovirus,  an opportunistic virus which causes blindness
and other conditions in immunosuppressed patients.

    "CMV  Retinitis"  means the  manifestation  of active CMV  infection  in the
retina of the eye,  which  destroys  portions of the retina  eventually  causing
blindness.
    

    "Combination  Therapy"  means the use of various  combinations  of  protease
inhibitors, RT inhibitors and/or other drugs in the treatment of HIV/AIDS.

    "Enzyme"  means a chemical  substance that  facilitates  the occurrence of a
chemical reaction involving other chemical substances in a living system.

    "Gastrointestinal" means pertaining to the stomach and intestine.

    "HIV" means human  immunodeficiency  virus, the virus which is the precursor
of AIDS.

   
    "Immune  System" means a complex  system that defends the human body against
disease-causing microorganisms such as viruses that enter the body.
    

    "Immunodeficiency"  means a decreased or  compromised  ability of the immune
system to defend against infection.

    "Immunogenicity" means the capacity to induce a detectable response from the
immune system.

    "Inhibitor" means a chemical substance that stops enzyme activity.

    "Intravenous" means within or into a vein.

    "Intravitreal"  means  within the  vitreous  (clear  watery gel) of the eye;
behind the lens and in front of the retina.

    "In vitro" means in the test tube.

    "Metabolism"  means the chemical  changes in living cells by which energy is
provided  for  vital  processes  and  activities  and by which new  material  is
assimilated.

    "Monotherapy" means the treatment of HIV/AIDS with a single drug.

    "Mutagenicity" means the capacity to induce a genetic mutation.

    "Neurologic" means having to do with the nervous system.

   
    "Nucleoside/Non-nucleoside"  describes  two  different  types of drugs which
bond to different portions of an enzyme,  each resulting in a separate method of
enzyme inhibition.
    

    "Opportunistic  Infections"  means  infections  which may reside in the body
without causing  symptoms so long as the immune system is functioning  properly,
but which become active (i.e. cause symptoms) as a result of immunodeficiency.

    "Oral Availability/Oral  Bioavailability" means the rate and extent to which
a drug  enters the general  circulation  of the body when  administered  via the
mouth.



                                      G-1




    "Prophylactic"  means an agent or regimen that contributes to the prevention
of infection or disease.

   
    "Protease/Reverse  Transcriptase" means two of the enzymes necessary for the
process of HIV replication.

    "Renal  Toxicity"  means toxicity  pertaining to the kidney which can impair
kidney function.
    

    "Replication" means the duplication process of genetic material.

   
    "Resistance" means a genetic factor in microorganisms,  such as bacteria and
viruses,  which enable them to be  unaffected  by treatment  with  antibiotic or
anti-viral drugs.
    

    "RT" means reverse transcriptase.

    "Synthesis"  means, in chemistry,  the production of a substance by union of
elements or simpler compounds or by degradation of a more complex compound.

    "Teratogenecity"  means the  ability to  adversely  affect  normal  cellular
development in the embryo or fetus.

    "Tolerance"  means the  capacity to endure a  substance,  and/or  subsequent
doses of the substance, without an unacceptable adverse effect.

    "Toxicity" means the degree of poisonous effect.

    "TPFA" means  thiophosphonoformic acid, an anti-viral compound for which the
Company has adopted the trade name "Thiovir(tm)."

    "Viral Load" means the level of viral infection in the body.


                                      G-2



================================================================================
NO PERSON HAS BEEN  AUTHORIZED  IN  CONNECTION  WITH THE OFFERING MADE HEREBY TO
GIVE  ANY  INFORMATION  OR TO MAKE  ANY  REPRESENTATION  NOT  CONTAINED  IN THIS
PROSPECTUS AND, IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE
RELIED UPON AS HAVING BEEN  AUTHORIZED BY THE COMPANY OR ANY  UNDERWRITER.  THIS
PROSPECTUS  DOES NOT  CONSTITUTE AN OFFER TO BUY ANY OF THE  SECURITIES  OFFERED
HEREBY TO ANY PERSON OR BY ANYONE IN ANY JURISDICTION IN WHICH IT IS UNLAWFUL TO
MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE MAKE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES,  CREATE ANY IMPLICATION THAT
THE  INFORMATION  CONTAINED  HEREIN IS CORRECT AS OF ANY DATE  SUBSEQUENT TO THE
DATE HEREOF.

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

                                TABLE OF CONTENTS

<TABLE>
   
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                           <C>
Prospectus Summary                                                             3
Risk Factors                                                                   6
Special Note Regarding Forward-
  Looking Statements                                                          17
Use of Proceeds                                                               18
Dividend Policy                                                               18
Dilution                                                                      19
Capitalization                                                                20
Selected Financial Data                                                       21
Management's Discussion and Analysis of
  Financial Condition and Results of
  Operations                                                                  22
Business                                                                      24
Management                                                                    34
Principal Stockholders                                                        40
Certain Relationships and Related
  Transactions                                                                42
Description of Securities                                                     44
Underwriting                                                                  49
Shares Eligible for Future Sale                                               51
Legal Matters                                                                 52
Experts                                                                       52
Additional Information                                                        52
Index to Financial Statements                                                F-1
Glossary                                                                    G-1
</TABLE>
    

    UNTIL  ________________,  1997, ALL DEALERS  EFFECTING  TRANSACTIONS  IN THE
REGISTERED SECURITIES,  WHETHER OR NOT PARTICIPATING IN THE 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.

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



                              PERARDUA CORPORATION

                        1,000,000 SHARES OF COMMON STOCK

                          1,000,000 REDEEMABLE WARRANTS




                                   ----------
                                   PROSPECTUS
                                   ----------




   
                           SCHNEIDER SECURITIES, INC.
                           LEW LIEBERBAUM & CO., INC.
    

                                              , 1997




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






                                    PART II

                  INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 24. INDEMNIFICATION OF DIRECTORS AND OFFICERS

    Section  102(b)(7)  of  the  Delaware  General  Corporation  Law  enables  a
corporation in its original certificate of incorporation or an amendment thereto
validly  approved  by the  corporation's  stockholders  to  eliminate  or  limit
personal  liability  of  members  of its Board for  violations  of a  director's
fiduciary duty of care.  However,  the elimination of limitation shall not apply
where  there has been a breach of the duty of  loyalty,  failure  to act in good
faith, engaging in intentional misconduct or knowingly violating a law, paying a
dividend or obtaining an improper personal benefit.

    In addition,  Section 145 of the Delaware General  Corporation Law permits a
corporation  organized  under  Delaware law to indemnify  directors and officers
with respect to any matter in which the director or officer  acted in good faith
and in a manner he or she  reasonably  believed  to be not  opposed  to the best
interests of the Company,  and, with respect to any criminal  action,  he or she
had reasonable cause to believe his or her conduct was not lawful.

    Article  VII,  Section  2 of  the  Company's  Certificate  of  Incorporation
provides as follows:

       Subject to the  operation of Section 4 of this Article VII, each [officer
    and director of the Company) shall be  indemnified  and held harmless by the
    [Company) to the fullest extent authorized by the General Corporation Law of
    the State of Delaware,  as the same exists or may  hereafter be amended (but
    in the  case of such  amendment,  only to the  extent  that  such  amendment
    permits the [Company) to provide  broader  indemnification  rights than such
    law permitted the [Company) to provide prior to such amendment)  against any
    and all [e)xpenses,  judgments, penalties, fines and amounts reasonably paid
    in  settlement  that are  incurred by such  [officer or director) or on such
    [officer's or director's) behalf in connection with any threatened,  pending
    or completed  [p)roceeding or any claim, issue or matter therein, which such
    [officer  or  director)  is,  or is  threatened  to be  made,  a party to or
    participant  in by  reason of such  [officer's  or  director's)  [c)orporate
    [s)tatus,  if such [officer or director) acted in good faith and in a manner
    such  [officer or director)  reasonably  believed to be in or not opposed to
    the best  interests  of the  [Company)  and,  with  respect to any  criminal
    proceeding,  has no  reasonable  cause to  believe  his or her  conduct  was
    unlawful.  The rights of  indemnification  provided by this  Section 2 shall
    continue as to an [officer or director)  after he or she has ceased to be an
    [officer  or  director)  and shall inure to the benefit of his or her heirs,
    executors, administrators and personal representatives.  Notwithstanding the
    foregoing,  the [Company) shall indemnify any [officer or director)  seeking
    indemnification in connection with a [p)roceeding initiated by such [officer
    or  director)  only if such  [p)roceeding  was  authorized  by the  Board of
    Directors of the [Company).

       In  addition,  Article VII,  Section 4 of the  Company's  Certificate  of
    Incorporation provides as follows:

       Unless ordered by a court, no indemnification  shall be provided pursuant
    to this Article VII to an [o)fficer . . . unless a determination  shall have
    been made that such  person  acted in good faith and in a manner such person
    reasonably  believed  to be in or not opposed to the best  interests  of the
    [Company) and, with respect to any criminal [p)roceeding, such person had no
    reasonable  cause  to  believe  his  or  her  conduct  was  unlawful.   Such
    determination  shall be made by (a) a majority  vote of the  [d)isinterested
    [d)irectors,  even though less than a quorum of the Board . . . (b) if there
    are no such [d)isinterested [d)irectors, or if a majority of [d)isinterested
    [d)irectors so direct by independent legal counsel in a written opinion,  or
    (c) by the stockholders of the [Company).

       The  Company's  Certificate  of  Incorporation  provides  for  payment of
    indemnifiable  expenses  in advance of the final  disposition  of an action,
    suit or proceeding upon receipt of an undertaking of the indemnified  person
    to repay such amount if it shall  ultimately be determined that he or she is


                                      II-1





    not entitled to be indemnified by the Company, and further provides that the
    Board of  Directors  may,  in its  discretion,  provide  indemnification  to
    non-officer employees.

       The Company  intends to enter into  indemnification  agreements  (Exhibit
    10.8 hereto) with each of its directors which attempt to provide the maximum
    protection  permitted  by Delaware  law,  as it may be amended  from time to
    time.  Under  such  additional  indemnification   provisions,   however,  an
    individual will not receive  indemnification  for judgments,  settlements or
    expenses if he or she is found  liable to the Company  (except to the extent
    the  court  determines  he or she  is  fairly  and  reasonably  entitled  to
    indemnity for expenses),  for settlements not approved by the Company or for
    settlements  and expenses if the settlement is not approved by the court. In
    the event the Company does not pay a requested  indemnification  amount, the
    indemnification  agreements will allow the indemnified party to contest this
    determination  by  bringing  an action  against  the  Company to recover the
    unpaid  amount  and costs and  expenses.  In the  event  indemnification  is
    unavailable  and the Company is found  jointly  liable with the  indemnified
    party, the  indemnification  agreements will enable the indemnified party to
    require the Company to  contribute  to the payment of damages and  expenses,
    based on the relative benefit to and fault of the indemnified  party and the
    Company.  The Company  also  intends to purchase  directors'  and  officers'
    liability insurance.

       The Underwriting  Agreement  (Exhibit 1.1 hereto) contains  provisions by
    which the Underwriters have agreed to indemnify the Company, each person, if
    any,  who  controls  the  Company  within  the  meaning of Section 15 of the
    Securities  Act,  each  director  of the  Company,  and each  officer of the
    Company who signs this Registration  Statement,  with respect to liabilities
    arising  from  information  furnished  in  writing  by or on  behalf  of the
    Underwriters for use in the Registration Statement.

ITEM 25. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

The following is a list of the estimated  expenses to be incurred by the Company
in connection  with the issuance and  distribution of the shares of Common Stock
being registered,  other than the underwriting discount and commissions.  All of
the following expenses will be paid by the Company.

<TABLE>
<CAPTION>
   
<S>                                                                      <C>
Commission Filing Fee                                                  $   4,600.00
Nasdaq SmallCap Fee                                                        5,000.00
NASD Filing Fee                                                            2,000.00
Blue Sky Fees and Expenses                                                15,000.00
Non-Accountable Expense Allowance to the Representatives                 153,000.00
Printing and Engraving Expenses                                           40,000.00
Accounting Fees and Expenses                                              25,000.00
Legal Fees and Expenses                                                   85,000.00
Transfer Agent and Registrar Fees                                          5,000.00
Consulting Fees                                                          108,000.00
Miscellaneous Fees and Expenses                                            7,400.00
                                                                        -----------
  TOTAL (Estimated)                                                     $450,000.00
                                                                        ===========
</TABLE>
    

ITEM 26. RECENT SALES OF UNREGISTERED SECURITIES

   
    Since  June  ,  1994,   the  Company  has  sold  and  issued  the  following
unregistered securities:
    

    On August 12, 1996, the Company issued  warrants to purchase an aggregate of
150,000  shares of Common Stock at $10.00 per share to The Starwood Trust for no
consideration.

    On August 12, 1996, the Company issued  warrants to purchase an aggregate of
150,000 shares of Common Stock at $10.00 per share to Francis E. O'Donnell,  Jr.
for no consideration.

                                      II-2





    On August 12, 1996, the Company issued  warrants to purchase an aggregate of
200,000  shares of Common Stock at $10.00 per share to Thomas L.  DePetrillo for
no consideration.

    On August 16, 1996,  the Company,  in connection  with the  acquisition of a
license of certain  rights to Thiovir,  issued an aggregate of 200,000  warrants
and 200,000  shares of Common Stock to 16 investors for a total,  aggregate cash
consideration of $200.00.  Fifteen of the investors were limited partners in the
limited  partnership which  transferred the license;  the other investor was the
University of Southern California, the licensor under the license.

    On August 16, 1996,  the Company  issued  320,000  shares of Common Stock to
Charles E. McKenna, Ph.D. for $320.00.

    On August 16, 1996,  the Company  issued  110,000  shares of Common Stock to
Mary Anthony Gray for $110.00.

    On August 16, 1996,  the Company  issued  320,000  shares of Common Stock to
Thomas D. Wolfe for $320.00.

    On September 8, 1996, the Company  issued options to purchase  10,000 shares
of Common  Stock at an exercise  price of $7.50 per share to Mary  Anthony  Gray
pursuant to the Company's Stock Incentive Plan.

   
    On October 4, 1996,  the Company  issued an aggregate  of 643,440  shares of
Common  Stock  to  15  investors  for  a  total,  aggregate  purchase  price  of
$1,029,504.
    

    On January 9, 1997,  the Company  issued  21,560 shares of Common Stock to a
single investor for $34,496.

    On March 1, 1997,  the Company  issued  28,440  shares of Common  Stock to a
single investor for $45,504.

    The sales and  issuance of the  securities  in the above  transactions  were
deemed to be exempt under the  Securities  Act by virtue of Sections 3(b) and/or
4(2) thereof  and/or  Regulation D promulgated  thereunder as  transactions  not
involving any public  offering.  The purchasers in each case  represented  their
intention to acquire the securities  for investment  only and not with a view to
the distribution  thereof.  Appropriate legends were affixed to the certificates
issued in such transactions.

    Shortly after the  completion  of the Offering,  the Company also intends to
issue options to purchase an aggregate of 230,000  shares of Common Stock to two
Officers and three of the Company's outside directors  pursuant to the Incentive
Plan at an exercise price to be determined, but not less than $5.00 per share.

ITEM 27. EXHIBITS

<TABLE>
<CAPTION>
   

 EXHIBIT
  NUMBER                                DESCRIPTION OF EXHIBITS
  ------                                -----------------------
<S>             <C>
1.1             -- Form of Underwriting Agreement*
1.2             -- Form of Selected Dealers Agreement*
1.3             -- Form of Agreement Among Underwriters*
2.1             -- Option and Asset Purchase Agreement, dated July 8, 1996, by and between PerArdua
                   Investors, L.P. and the Company*
3.1             -- Certificate of Incorporation of Registrant, as amended**
3.2             -- Bylaws of Registrant, as amended**
4.1             -- Form of Common Stock Certificate*
4.2             -- Form of Stock Purchase Warrant*
4.3             -- Form of Private Placement Subscription Agreement*
4.4             -- Form of Acquisition Transaction Subscription Agreement*
4.5             -- Form of Representatives' Warrants*
4.6             -- Form of Warrant Agreement (including form of Redeemable Warrant Certificate)*

                                      II-3





 EXHIBIT
  NUMBER                                DESCRIPTION OF EXHIBITS
  ------                                -----------------------

5.1             -- Form of Opinion of LeClair Ryan, A Professional Corporation*
10.1            -- Option & License Agreement, dated March 28, 1994, by and between PerArdua Investors,
                   L.P. and the University of Southern California*
10.2            -- Stockholders' Agreement, dated July 8, 1996, by and between the Company, the
                   stockholders of the Company, and the limited partners of PerArdua Investors, L.P.*
10.3            -- Research Agreement, dated January 7, 1997, by and between the University of Southern
                   California and the Company*
10.4            -- Consulting Agreement, dated September 30, 1996, by and between the Company and
                   Charles E. McKenna, Ph.D.*
10.5            -- Assignment, Assumption and Consent, dated as of July 31, 1996, by and between
                   PerArdua Investors, L.P., the Company and the University of Southern California*
10.6            -- Form of Consulting Agreement by and between the Company and Schneider Securities,
                   Inc.*
10.7            -- Employment Agreement, dated as of September 3, 1996 by and between the Company
                   and Mary Anthony Gray, as amended*
10.8            -- Form of Indemnification Agreement*
10.9            -- Employment Agreement, dated February 12, 1997, by and between the Company and
                   Nicholas Jon Virca*
10.10           -- PerArdua Corporation Stock Incentive Plan*
23.1            -- Consent of McGladrey & Pullen, LLP**
23.2            -- Consent of LeClair Ryan, A Professional Corporation (included in Exhibit 5.1 hereto)**
24.1            -- Power of Attorney (see Page II-5)*
27.1            -- Financial Data Schedule*
</TABLE>
    

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

 * Previously filed.

** Filed herewith.

ITEM 28. UNDERTAKINGS

    The undersigned registrant hereby undertakes:

    (1) To file,  during  any period in which it offers or sells  securities,  a
post-effective amendment to this registration statement to:

       (i) Include any prospectus required by Section 10(a)(3) of the
    Securities Act;

       (ii) Reflect in the prospectus any facts or events which, individually or
    together,   represent  a  fundamental  change  in  the  information  in  the
    registration  statement.  Notwithstanding  the  foregoing,  any  increase or
    decrease in the volume of  securities  offered (if the total dollar value of
    securities  offered  would not  exceed  that which was  registered)  and any
    deviation from the low or high end of the estimated  maximum  offering range
    may be  reflected  in the  form of  prospectus  filed  with  the  Commission
    pursuant  to Rule  424(b) if, in the  aggregate,  the  changes in volume and
    price represent no more than a 20% change in the maximum aggregate  offering
    price  set  forth in the  "Calculation  of  Registration  Fee"  table in the
    effective registration statement; and

       (iii) Include any additional or changed material information on the
    plan of distribution.

Provided,  however,  that  paragraphs  1(i)  and  1(ii)  do  not  apply  if  the
registration  statement is on Form S-3 or Form S-8, and the information required
to be included in a post-effective amendment by those paragraphs is contained in
periodic reports filed by the registrant pursuant to Section 13 or Section 15(d)
of the Securities Exchange Act of 1934 that are incorporated by reference in the
registration statement.


                                      II-4




    (2) That, for the purpose of determining  any liability under the Securities
Act of 1933,  each  such  post-effective  amendment  shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

    (3) To remove from  registration by means of a  post-effective  amendment of
any of the securities being registered which remain unsold at the termination of
the offering.

    Insofar as indemnification  for liabilities arising under the Securities Act
may be permitted to  directors,  officers and  controlling  persons of the small
business issuer pursuant to the foregoing  provisions,  or otherwise,  the small
business  issuer 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 small
business  issuer  of  expenses  incurred  or  paid  by a  director,  officer  or
controlling person of the small business issuer 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 small business
issuer 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 Securities  Act and will be governed by the final  adjudication
of such issue.

    The registrant hereby undertakes that:

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

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

    The  undersigned   small  business  issuer  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.



                                      II-5




                                   SIGNATURES

   
    IN ACCORDANCE  WITH THE  REQUIREMENTS  OF THE SECURITIES ACT, THE REGISTRANT
CERTIFIES  THAT IT HAS  REASONABLE  GROUNDS TO BELIEVE  THAT IT MEETS ALL OF THE
REQUIREMENTS  OF FILING ON FORM SB-2 AND AUTHORIZED  THIS AMENDMENT NO. 2 TO THE
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED,  IN THE IN
THE CITY OF RICHMOND, COMMONWEALTH OF VIRGINIA, ON JUNE 5, 1997.
    

                                         PERARDUA CORPORATION
                                         By:  /s/ NICHOLAS JON VIRCA
                                           -------------------------------
                                               NICHOLAS JON VIRCA
                                              PRESIDENT AND CHIEF

                                OPERATING OFFICER

    PURSUANT  TO  THE  REQUIREMENT  OF THE  SECURITIES  ACT,  THIS  REGISTRATION
STATEMENT HAS BEEN SIGNED BY THE FOLLOWING  PERSONS IN THE CAPACITIES AND ON THE
DATES INDICATED:

<TABLE>
<CAPTION>
   

                     NAME                                      TITLE                    DATE
                     ----                                      -----                    ----
       <S>                                     <C>                               <C>
                      *
       -------------------------------            Chairman of the Board and          June 5, 1997
       FRANCIS E. O'DONNELL, JR., M.D.,            Chief Executive Officer
                                                  (Principal Executive
                                                  Officer) and Director

                                                 Treasurer (Principal FinanciaL     June 5, 1997
       -------------------------------             Officer), Secretary and
             SAMUEL P. SEARS, JR.                   Director

                                                  

                       *                         Director                           June 5, 1997
       -------------------------------
          EMANUELA I. CHARLTON, PH.D.

                       *                         Director                           June 5, 1997
       -------------------------------
                 THOMAS QUINN

                       *                         Director                           June 5, 1997
       -------------------------------
             W. HOWARD LEWIN, M.D.


        */s/ SAMUEL P. SEARS, JR.
       -------------------------------
               ATTORNEY-IN-FACT

</TABLE>
    

                                      II-6




                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
   

 EXHIBIT
 NUMBER                                 DESCRIPTION OF EXHIBITS
 ------                                 -----------------------
<S>             <C>
1.1             -- Form of Underwriting Agreement*
1.2             -- Form of Selected Dealers Agreement*
1.3             -- Form of Agreement Among Underwriters*
2.1             -- Option and Asset Purchase Agreement, dated July 8, 1996, by and between PerArdua
                   Investors, L.P. and the Company*
3.1             -- Certificate of Incorporation of Registrant, as amended**
3.2             -- Bylaws of Registrant, as amended**
4.1             -- Form of Common Stock Certificate*
4.2             -- Form of Stock Purchase Warrant*
4.3             -- Form of Private Placement Subscription Agreement*
4.4             -- Form of Acquisition Transaction Subscription Agreement*
4.5             -- Form of Representatives' Warrants*
4.6             -- Form of Warrant Agreement (including form of Redeemable Warrant Certificate)*
5.1             -- Form of Opinion of LeClair Ryan, A Professional Corporation*
10.1            -- Option & License Agreement, dated March 28, 1994, by and between PerArdua Investors,
                   L.P. and the University of Southern California*
10.2            -- Stockholders' Agreement, dated July 8, 1996, by and between the Company, the
                   stockholders of the Company, and the limited partners of PerArdua Investors, L.P.*
10.3            -- Research Agreement, dated January 7, 1997, by and between the University of Southern
                   California and the Company*
10.4            -- Consulting Agreement, dated September 30, 1996, by and between the Company and
                   Charles E. McKenna, Ph.D.*
10.5            -- Assignment, Assumption and Consent, dated as of July 31, 1996, by and between
                   PerArdua Investors, L.P., the Company and the University of Southern California*
10.6            -- Form of Consulting Agreement by and between the Company and Schneider Securities,
                   Inc.*
10.7            -- Employment Agreement, dated as of September 3, 1996 by and between the Company
                   and Mary Anthony Gray, as amended*
10.8            -- Form of Indemnification Agreement*
10.9            -- Employment Agreement, dated February 12, 1997, by and between the Company and
                   Nicholas Jon Virca*
10.10           -- PerArdua Corporation Stock Incentive Plan*
23.1            -- Consent of McGladrey & Pullen, LLP**
23.2            -- Consent of LeClair Ryan, A Professional Corporation (included in Exhibit 5.1 hereto)*
24.1            -- Power of Attorney (see Page II-5)*
27.1            -- Financial Data Schedule*
</TABLE>
    

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

 * Previously filed.

** Filed herewith.


                                                                     EXHIBIT 3.1

                          CERTIFICATE OF INCORPORATION

                                       OF

                              PERARDUA CORPORATION

                                    ARTICLE I

                                      NAME
                                      ----

         The name of the Corporation is PerArdua Corporation.

                                   ARTICLE II

                                REGISTERED OFFICE
                                -----------------

         The address of the registered office of the Corporation in the State of
Delaware is 1209 Orange Street, in the City of Wilmington, County of New Castle.
The  name of its  registered  agent at such  address  is The  Corporation  Trust
Company.

                                   ARTICLE III

                                    PURPOSES
                                    --------

         The nature of the  business or purposes to be  conducted or promoted by
the  Corporation  is  to  engage  in  any  lawful  act  or  activity  for  which
corporations may be organized under the General  Corporation Law of the State of
Delaware (the "DGCL").

                                   ARTICLE IV

                                  CAPITAL STOCK
                                  -------------

         Section 1.  Number of Shares.

         The total number of shares of capital stock which the Corporation shall
have the authority to issue is 26,000,000  shares, of which (i) 1,000,000 shares
shall be Preferred Stock,  par value $.01 per share (the "Preferred  Stock") and
(ii)  25,000,000  shares  shall be common  stock,  par value $.01 per share (the
"Common Stock"). As set forth in this Article IV and subject to the terms of any
series of Preferred  Stock  (provided  that any shares of such series are issued
and outstanding),  the Board of Directors or any authorized committee thereof is
authorized  from time to time to establish  and  designate one or more series of
Preferred  Stock, to fix and determine the variations in the relative rights and
preferences  as between the  different  series of Preferred  Stock in the manner
hereinafter  set forth in this  Article  IV,  and to 







fix or alter the number of shares comprising any such series and the designation
thereof to the extent permitted by law.

         Except as provided to the  contrary in the  provisions  establishing  a
class of stock or a series of Preferred Stock,  the number of authorized  shares
of such class or series may be increased or decreased  (but not below the number
of shares thereof then outstanding) by the affirmative vote of a majority of the
stock of the Corporation entitled to vote, voting as a single class.

         Section 2.  General.
         
         The   designations,   powers,   preferences  and  rights  of,  and  the
qualifications, limitations and restrictions upon, each class or series of stock
shall be determined in accordance with, or as set forth below in, Sections 3 and
4 of this Article IV.

         Section 3.  Common Stock.

         Subject to all of the rights,  powers and  preferences of the Preferred
Stock,  and  except  as  provided  by  law  or in  this  Article  IV  (or in any
certificate of designation of any series of Preferred  Stock,  provided that any
shares of such series are issued and  outstanding)  or by the Board of Directors
or any authorized committee thereof pursuant to this Article IV:

                  (a)  the holders of the Common Stock shall have the  exclusive
right to vote for the election of Directors and on all other  matters  requiring
stockholder action, each share being entitled to one vote;

                  (b)  dividends  may be  declared  and  paid or set  apart  for
payment  upon the  Common  Stock out of any  assets or funds of the  Corporation
legally available for the payment of dividends, but only when and as directed by
the Board of Directors or any authorized committee thereof; and

                  (c) upon the voluntary or involuntary liquidation, dissolution
or winding up of the  Corporation,  the net assets of the  Corporation  shall be
distributed pro rata to the holders of the Common Stock in accordance with their
respective rights and interests.

         Section 4.  Preferred Stock.

         Subject  to any  limitations  prescribed  by law or by the terms of any
series of Preferred  Stock  (provided  that any shares of such series are issued
and outstanding),  the Board of Directors or any authorized committee thereof is
expressly  authorized  to provide for the  issuance  of the shares of  Preferred
Stock in one or more series of such stock, and by filing a certificate  pursuant
to applicable law of the State of Delaware,  to establish or change from time to
time the number of shares to be  included  in each such  series,  and to fix the
designations,  powers, preferences and the relative, participating,  optional or
other  special


                                       2



rights of the shares of each  series  and any  qualifications,  limitations  and
restrictions  thereof.  Any action by the Board of Directors  or any  authorized
committee  thereof under this Section 4 shall require the affirmative  vote of a
majority  of the  Directors  then in office or a majority of the members of such
committee. The Board of Directors or any authorized committee thereof shall have
the right to determine to fix one or more of the following  with respect to each
series of Preferred Stock to the extent permitted by law:

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

                  (b) The  dividend  rates or the amount of dividends to be paid
on the shares of such series,  whether dividends shall be cumulative and, if so,
from which  date or dates,  the  payment  date or dates for  dividends,  and the
participating and other rights, if any, with respect to dividends;

                  (c) The voting powers,  full or limited, if any, of the shares
of such series;

                  (d) Whether the shares of such series shall be redeemable and,
if so, the price or prices at which, and the terms and conditions on which, such
shares may be redeemed;

                  (e) The  amount or  amounts  payable  upon the  shares of such
series  and any  preferences  applicable  thereto in the event of  voluntary  or
involuntary liquidation, dissolution or winding up of the Corporation;

                  (f) Whether the shares of such series shall be entitled to the
benefit  of a sinking  or  retirement  fund to be  applied  to the  purchase  or
redemption of such shares,  and if so entitled,  the amount of such fund and the
manner of its  application,  including  the price or prices at which such shares
may be redeemed or purchased through the application of such fund;

                  (g) Whether  the shares of such  series  shall be  convertible
into, or exchangeable  for, shares of any other class or classes or of any other
series of the same or any other  class or  classes  of stock of the  Corporation
and, if so convertible or exchangeable,  the conversion price or prices,  or the
rate or rates of exchange,  and the adjustments  thereof,  if any, at which such
conversion  or  exchange  may be made,  and any  terms  and  conditions  of such
conversion or exchange;

                  (h) The price or other  consideration  for which the shares of
such series shall be issued;

                  (i) Whether the shares of such  series  which are  redeemed or
converted  shall have the status of authorized but unissued  shares of Preferred
Stock (or series  thereof)  and



                                       3




whether  such shares may be reissued as shares of the same or any other class or
series of stock; and

                  (j) Such other powers,  preferences,  rights,  qualifications,
limitations and restrictions thereof as the Board of Directors or any authorized
committee thereof may deem advisable.

                                    ARTICLE V

                               STOCKHOLDER ACTION
                               ------------------

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

                                   ARTICLE VI

                                    DIRECTORS
                                    ---------

         Section 1.  General.

         The  business  and  affairs of the  Corporation  shall be managed by or
under the  direction of the Board of  Directors,  except as  otherwise  provided
herein or required by law.

         Section 2.  Election of Directors.

         Election of Directors  need not be by written  ballot unless the Bylaws
of the Corporation shall so provide.

         Section 3.  Number and Terms of Directors.

         The number of Directors of the Corporation shall be fixed by resolution
duly adopted from time to time by the Board of Directors.  The Directors,  other
than  those who may be elected  by the  holders  of any  series of  Undesignated
Preferred  Stock of the  Corporation,  shall be classified,  with respect to the
term for which they severally hold office, into three classes as nearly equal in
number as possible.  The initial Class I Directors of the  Corporation  shall be
Emanuela I. Charlton,  Ph.D. and Thomas Quinn; the initial Class II Directors of
the Corporation  shall be Samuel P. Sears, Jr. and William Lewin,  M.D.; and the
initial  Class III Director of the  Corporation  shall be Francis E.  O'Donnell,
Jr., M.D. The initial  Class I Directors  shall serve for a term expiring at the
annual  meeting  of  stockholders  to be held in  1997,  the  initial  Class  II
Directors  shall serve for a term expiring at the annual meeting of stockholders
to be held in 1998;  and the initial  Class III Director  shall serve for a term
expiring  at the annual  meeting  of  stockholders  to be held in 1999.  At each
annual  meeting of  stockholders,  the  successor or  successors of the class of
Directors  whose term expires at that meeting shall be elected by a plurality of
the votes cast at such meeting and shall hold office for a term




                                       4




expiring at the annual meeting of stockholders  held in the third year following
the year of their  election.  The  Directors  elected to each  class  shall hold
office  until their  successors  are duly  elected and  qualified or until their
earlier resignation or removal.

         Notwithstanding the foregoing,  whenever, pursuant to the provisions of
Article IV of this Certificate of Incorporation,  the holders of any one or more
series of Undesignated  Preferred Stock shall have the right,  voting separately
as a series or together with holders of other such 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  and any  certificate  of
designations  applicable  thereto,  and such  Directors so elected  shall not be
divided into classes pursuant to this Section 3.

         During any period  when the  holders of any series of  Preferred  Stock
have the right to elect  additional  Directors as provided for or fixed pursuant
to the  provisions  of  Article IV hereof,  then upon  commencement  and for the
duration of the period during which said right continues: (i) the then otherwise
total authorized number of Directors of the Corporation  shall  automatically be
increased  by such  specified  number  of  Directors,  and the  holders  of such
Preferred Stock shall be entitled to elect the additional  Directors so provided
for or fixed pursuant to said provisions, and (ii) each such additional Director
shall serve until such  Director's  successor  shall have been duly  elected and
qualified,  or until  such  Director's  right  to hold  such  office  terminates
pursuant  to  said  provisions,   whichever  occurs  earlier,  subject  to  such
Director's earlier death,  disqualification,  resignation or removal.  Except as
otherwise  provided by the Board in the resolution or  resolutions  establishing
such series,  whenever the holders of any series of Preferred  Stock having such
right to elect  additional  Directors are divested of such right pursuant to the
provisions of such stock,  the terms of office of all such additional  Directors
elected by the holders of such stock, or elected to fill any vacancies resulting
from the death,  resignation,  disqualification  or  removal of such  additional
Directors,  shall  forthwith  terminate and the total and  authorized  number of
Directors of the Corporation shall be reduced accordingly.

         Section 4.  Removal.

         Subject to the  rights,  if any,  of any series of  Preferred  Stock to
elect  Directors  and to remove any Director  whom the holders of any such stock
have the right to elect, any Director (including persons elected by Directors to
fill  vacancies in the Board of  Directors)  may be removed from office (i) only
with cause and (ii) only by the affirmative  vote of at least  two-thirds of the
total votes which would be eligible to be cast by  stockholders  in the election
of such Director. At least 30 days prior to any meeting of stockholders at which
it is proposed that any Director be removed from office,  written notice of such
proposed  removal shall be sent to the Director whose removal will be considered
at the meeting. For purposes of this



                                       5




Certificate  of  Incorporation,  "cause,"  with  respect  to the  removal of any
Director shall mean only (i) conviction of a felony, (ii) declaration of unsound
mind by order of court,  (iii) gross dereliction of duty, (iv) commission of any
action  involving  moral  turpitude,  or  (v)  commission  of  an  action  which
constitutes  intentional misconduct or a knowing violation of law if such action
in either event  results both in an improper  substantial  personal  benefit and
material injury to the Corporation.


                                   ARTICLE VII

                                 INDEMNIFICATION
                                 ---------------

         Section 1.  Definitions.  For purposes of this Article:

         (a)  "Officer"   means  any   person  who  serves  or  has  served  the
Corporation (i) as a director on the Board of Directors of the  Corporation,  or
(ii) as an officer appointed by the Board of Directors of the Corporation;

         (b)  "Non-Officer  Employee"  means any person who serves or has served
as an employee of the Corporation, but who is not or was not an Officer;

         (c)  "Proceeding" means any threatened,  pending,  or completed action,
suit,   arbitration,    alternate   dispute   resolution   mechanism,   inquiry,
investigation,  administrative  hearing  or  other  proceeding,  whether  civil,
criminal, administrative, arbitrative or investigative;

         (d)  "Expenses" means all reasonable attorney's fees, retainers,  court
costs,  transcript costs, fees of expert  witnesses,  private  investigators and
professional advisors (including, without limitation, accountants and investment
bankers), travel expenses,  duplicating costs, printing and binding costs, costs
of preparation of demonstrative  evidence and other courtroom  presentation aids
and devices,  costs incurred in connection with document  review,  organization,
imaging and computerization,  telephone charges, postage, delivery service fees,
and other  disbursements,  costs or expenses of the type customarily incurred in
connection  with  prosecuting,  defending,  preparing  to  prosecute  or defend,
investigating,  being or  preparing  to be a witness in,  settling or  otherwise
participating in, a Proceeding;

         (e) "Corporate  Status" describes the status of a person who (i) in the
case of an  Officer,  is or was a  director,  officer,  employee or agent of the
Corporation or of any other  corporation,  partnership,  joint  venture,  trust,
employee  benefit plan or other  enterprise which such Officer is or was serving
at the written request of the Corporation,  or (ii) in the case of a Non-Officer
Employee,  is or was an employee  of the  Corporation  or a  director,  officer,
employee or agent of any other corporation,  partnership,  joint venture, trust,
employee benefit plan or other enterprise which such Non-Officer  Employee is or
was serving at the written request of the Corporation; and



                                       6




         (f) "Disinterested  Director" means, with respect to each Proceeding in
respect  of  which  indemnification  is  sought  hereunder,  a  director  of the
Corporation who is not and was not a party to such Proceeding.

         Section 2.  Indemnification  of Officers.  Subject to the  operation of
Section 4 of this  Article  VII,  each  Officer  shall be  indemnified  and held
harmless by the  Corporation  to the fullest  extent  authorized  by the General
Corporation Law of the State of Delaware, 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
any and all Expenses, judgments, penalties, fines and amounts reasonably paid in
settlement  that are  incurred by such  Officer or on such  Officer's  behalf in
connection  with any threatened,  pending or completed  Proceeding or any claim,
issue or matter  therein,  which such Officer is, or is threatened to be made, a
party to or participant in by reason of such Officer's Corporate Status, if such
Officer acted in good faith and in a manner such Officer reasonably  believed to
be in or not opposed to the best interests of the Corporation  and, with respect
to any  criminal  proceeding,  has no  reasonable  cause to  believe  his or her
conduct was unlawful.  The rights of indemnification  provided by this Section 2
shall  continue as to an Officer after he or she has ceased to be an Officer and
shall inure to the benefit of his or her heirs,  executors,  administrators  and
personal  representatives.  Notwithstanding the foregoing, the Corporation shall
indemnify any Officer  seeking  indemnification  in connection with a Proceeding
initiated by such Officer only if such Proceeding was authorized by the Board of
Directors of the Corporation.

         Section 3.  Indemnification  of Non-Officer  Employees.  Subject to the
operation of Section 4 of this Article VII,  each  Non-Officer  Employee may, in
the discretion of the Board of Directors of the  Corporation,  be indemnified by
the Corporation to the fullest extent authorized by the General  Corporation Law
of the State of Delaware,  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 any or all
Expenses, judgments,  penalties, fines and amounts reasonably paid in settlement
that are incurred by such Non-Officer Employee or on such Non-Officer Employee's
behalf in connection with any threatened,  pending or completed  Proceeding,  or
any claim,  issue or matter  therein which such  Non-Officer  Employee is, or is
threatened  to  be  made,  a  party  to or  participant  in by  reason  of  such
non-officer  Employee's  Corporate Status, if such Non-Officer Employee acted in
good faith and in a manner such Non-Officer  Employee  reasonably believed to be
in or not opposed to the best interests of the Corporation,  and with respect to
any criminal  proceeding,  had no reasonable cause to believe his or her conduct
was  unlawful.  The rights of  indemnification  provided by this Section 3 shall
continue  as to a  Non-Officer  Employee  after  he or she  has  ceased  to be a
Non-Officer  Employee  and  shall  inure  to the  benefit  of his or her  heirs,
personal  representatives,  executors and  administrators.  Notwithstanding  the
foregoing,  the  Corporation  may indemnify  any  Non-Officer  Employee  seeking
indemnification  in connection with a Proceeding  initiated by such  Non-Officer




                                       7




Employee only if such Proceeding was authorized by the Board of Directors of the
Corporation.

         Section 4. Good Faith.  Unless ordered by a court,  no  indemnification
shall be provided pursuant to this Article VII to an Officer or to a Non-Officer
Employee unless a  determination  shall have been made that such person acted in
good  faith and in a manner  such  person  reasonably  believed  to be in or not
opposed  to the best  interests  of the  Corporation  and,  with  respect to any
criminal  Proceeding,  such person had no reasonable cause to believe his or her
conduct was unlawful. Such determination shall be made by (a) a majority vote of
the  Disinterested  Directors,  even  though  less than a quorum of the Board of
Directors, (b) if there are no such Disinterested Directors, or if a majority of
Disinterested  Directors  so direct by  independent  legal  counsel in a written
opinion, or (c) by the stockholders of the Corporation.

         Section  5.   Advancement  of  Expenses  to  Officers  Prior  to  Final
Disposition. The Corporation shall advance all Expenses incurred by or on behalf
of any  Officer in  connection  with any  Proceeding  in which  such  Officer is
involved by reason of such Officer's  Corporate Status within ten days after the
receipt by the  Corporation  of a  statement  or  statements  from such  Officer
requesting such advance or advances from time to time, whether prior to or after
final  disposition  of such  Proceeding.  Such  statement  or  statements  shall
reasonably  evidence the Expenses incurred by such Officer and shall be preceded
or  accompanied  by an  undertaking by or on behalf of such Officer to repay any
Expenses so advanced if it shall  ultimately be determined  that such Officer is
not entitled to be indemnified against such Expenses.

         Section 6.  Advancement of Expenses to Non-Officer  Employees  Prior to
Final  Disposition.  The  Corporation  may,  in the  discretion  of the Board of
Directors  of the  Corporation,  advance any or all  Expenses  incurred by or on
behalf of any  Non-Officer  Employee in connection  with any Proceeding in which
such Non-Officer  Employee is involved by reason of such Non-Officer  Employee's
Corporate  Status  upon  the  receipt  by  the  Corporation  of a  statement  or
statements from such  Non-Officer  Employee  requesting such advance or advances
from time to time,  whether prior to or after  disposition  of such  Proceeding.
Such statement or statements shall reasonably  evidence the Expenses incurred by
such Non-Officer Employee and shall be preceded or accompanied by an undertaking
by or on behalf of such  Non-Officer  Employee to repay any Expenses so advanced
if it shall  ultimately  be  determined  that such  Non-Officer  Employee is not
entitled to be indemnified against such Expenses.

         Section 7. Contractual  Nature of Rights.  The foregoing  provisions of
this Article VII shall be deemed to be a contract  between the  Corporation  and
each Officer and  Non-Officer  Employee who serves in such  capacity at any time
while this  Article  VII 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  heretofore  existing  or any  Proceeding  heretofore  or
thereafter  brought based in whole or in part upon any such state of facts. If a
claim for  indemnification or advancement of Expenses hereunder by an Officer or
Non-Officer




                                       8




Employee  is not paid in full by the  Corporation  within  (a) 60 days after the
Corporation's  receipt of a written  claim for  indemnification,  or (b) 10 days
after the  Corporation's  receipt of  documentation of Expenses and the required
undertaking,  such Officer or  Non-Officer  Employee may at any time  thereafter
bring suit against the  Corporation  or recover the unpaid  amount of the claim,
and if  successful  in whole or in part,  such Officer or  Non-Officer  Employee
shall also be entitled to be paid the expenses of  prosecuting  such claim.  The
failure of the  Corporation  (including  its Board of Directors or any committee
thereof,  independent  legal counsel,  or  stockholders) to make a determination
concerning the permissibility of such indemnification or advancement of Expenses
under this Article VII shall not be a defense to the action and shall not create
a presumption that such indemnification or advancement is not permissible.

         Section 8. Non-Exclusivity of Rights. The rights to indemnification and
advancement  of Expenses set forth in this Article VII shall not be exclusive of
any other right which any Officer or Non-Officer  Employee may have or hereafter
acquire  under any statute,  provision  of this  Certificate  of  Incorporation,
agreement, vote of stockholders or Disinterested Directors or otherwise.

         Section 9. Insurance.  The Corporation may maintain  insurance,  at its
expense,  to protect itself and any Officer or Non-Officer  Employee against any
liability of any character  asserted  against or incurred by the  Corporation or
any such  Officer or  Non-Officer  Employee or arising out of any such  person's
Corporate  Status,  whether  or not the  Corporation  would  have  the  power to
indemnify such person against such liability  under the General  Corporation Law
of the State of Delaware or the provisions of this Article VII.

                                  ARTICLE VIII

                             LIMITATION OF LIABILITY
                             -----------------------

         A Director of the  Corporation  shall not be  personally  liable to the
Corporation  or its  stockholders  for monetary  damages for breach of fiduciary
duty as a Director,  except for liability  (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)  under  Section  174 of the  DGCL  or  (iv)  for  any
transaction from which the Director derived an improper personal benefit. If the
DGCL is amended after the effective date of this Certificate of Incorporation to
authorize   corporate  action  further  eliminating  or  limiting  the  personal
liability of  Directors,  then the  liability  of a Director of the  Corporation
shall be eliminated or limited to the fullest  extent  permitted by the DGCL, as
so amended.

         Any repeal or  modification  of this  Article VIII by either of (i) the
stockholders  of the  Corporation  or (ii) an amendment  to the DGCL,  shall not
adversely affect any right or protection  existing at the time of such repeal or
modification with respect to any acts or



                                       9




omissions  occurring before such repeal or modification of a person serving as a
Director at the time of such repeal or modification.


                                   ARTICLE IX

                               AMENDMENT OF BYLAWS
                               -------------------

         Section 1.  Amendment by Directors
         
         In furtherance and not in limitation of the powers conferred by statute
and subject to the terms of any series of  Preferred  Stock  (provided  that any
shares of such series are issued and outstanding), the Board of Directors of the
Corporation is expressly  authorized to make,  alter or repeal the Bylaws of the
Corporation.

         Section 2.  Amendment by Stockholders

         Subject to the terms of any series of Preferred  Stock  (provided  that
any  shares of such  series  are  issued  and  outstanding),  the  Bylaws of the
Corporation may be amended or repealed at any annual meeting of stockholders, or
special meeting of stockholders called for such purpose, by the affirmative vote
of at least  two-thirds of the total votes eligible to be cast on such amendment
or repeal by  holders  of  voting  stock,  voting  together  as a single  class;
provided,  however,  that, subject to the terms of any series of Preferred Stock
(provided  that any shares of such  series are issued and  outstanding),  if the
Board of Directors recommends that stockholders approve such amendment or repeal
at such meeting of stockholders, such amendment or repeal shall only require the
affirmative  vote of a majority of the total  votes  eligible to be cast on such
amendment  or repeal by holders of voting  stock,  voting  together  as a single
class.

                                    ARTICLE X

                    AMENDMENT OF CERTIFICATE OF INCORPORATION
                    -----------------------------------------

         Subject to the terms of any series of Preferred  Stock  (provided  that
any shares of such series are issued and outstanding),  the Corporation reserves
the right to amend or repeal this Certificate of Incorporation in the manner now
or hereafter  prescribed by statute and this Certificate of  Incorporation,  and
all  rights  conferred  upon  stockholders  herein are  granted  subject to this
reservation.  No amendment or repeal of this Certificate of Incorporation  shall
be made unless the same is first approved by the Board of Directors  pursuant to
a resolution adopted by the Board of Directors in accordance with Section 242 of
the DGCL, and, except as otherwise provided by law,  thereafter  approved by the
stockholders.  Subject to the terms of any series of Preferred  Stock  (provided
that any shares of such series are issued and outstanding), whenever any vote of
the holders of voting  stock is  required,  and in addition to any other vote of
holders of voting stock that is required by this Certificate of Incorporation or
by law,  the  affirmative  vote of a majority of the total votes  eligible to be
cast by holders of voting stock with respect to such amendment or repeal, voting
together as a single class, at a duly constituted meeting of stockholders called
expressly for such purpose  shall be required to amend or repeal any  provisions
of this Certificate of Incorporation;  provided,  however,  that, subject to the
terms of any series of Preferred  Stock (provided that any shares of such series
are issued and  outstanding),  the affirmative  vote of not less than 80% of the
total votes  eligible to be cast by holders of




                                       10




voting  stock,  voting  together a single  class,  shall be required to amend or
repeal any of the provisions of Article X of this Certificate of Incorporation.

         The name of the Incorporator of the Corporation is J. Benjamin English,
Esquire and his  business  address is 707 East Main Street,  11th Floor,  in the
City of Richmond, Virginia 23219.


                                  /s/ J. Benjamin English
                                  --------------------------------------
                                  Incorporator
                                  J. Benjamin English










                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                              PERARDUA CORPORATION


         1. The name of the Corporation is PerArdua Corporation.  The amendments
to the Corporation's  Certificate of Incorporation set forth herein were adopted
and approved in accordance with Section 242 of the Delaware General  Corporation
Law by the Directors of the Corporation by unanimous  consent effective April 9,
1997, and by the  stockholders  of the Corporation at the  Corporation's  Annual
Meeting of Stockholders duly held on April 23, 1997 (the "Annual Meeting").

         2. The first  paragraph of Article VI, Section 3 of the  Certificate of
Incorporation is amended in its entirety to read as follows:

                  "The number of Directors of the Corporation  shall be fixed by
resolution  duly adopted from time to time by the Board of Directors.  Directors
elected  at an  annual  meeting  of  stockholders  or at a  special  meeting  of
stockholders  shall be elected by a plurality  of the votes cast at such meeting
and  shall  hold  office  for a term  expiring  at the next  annual  meeting  of
stockholders and until their successors are duly elected and qualified, or until
their earlier resignation or removal."

         3. Article VI, Section 4 of the Certificate of Incorporation is amended
in its entirety to read as follows:

         "Section 4.  Removal.

         Subject to the  rights,  if any,  of any series of  Preferred  Stock to
elect  Directors  and to remove any Director  whom the holders of any such stock
have the right to elect, any Director (including persons elected by Directors to
fill  vacancies  in the Board of  Directors)  may be removed from office with or
without  cause by the  affirmative  vote of a majority  of the total votes which
would be eligible to be cast by  stockholders  in the election of such Director.
At least 30 days prior to any  meeting of  stockholders  at which it is proposed
that any  Director  be removed  from  office,  written  notice of such  proposed
removal  shall be sent to the Director  whose  removal will be considered at the
meeting."

         4. Article X of the  Certificate  of  Incorporation  is  amended in its
entirety to read as follows:







                                   "ARTICLE X

                    AMENDMENT OF CERTIFICATE OF INCORPORATION

         Subject to the terms of any series of Preferred  Stock  (provided  that
any shares of such series are issued and outstanding),  the Corporation reserves
the right to amend or repeal this Certificate of Incorporation in the manner now
or hereafter  prescribed by statute and this Certificate of  Incorporation,  and
all  rights  conferred  upon  stockholders  herein are  granted  subject to this
reservation.  No amendment or repeal of this Certificate of Incorporation  shall
be made unless the same is first approved by the Board of Directors  pursuant to
a resolution adopted by the Board of Directors in accordance with Section 242 of
the DGCL, and, except as otherwise provided by law,  thereafter  approved by the
stockholders.  Subject to the terms of any series of Preferred  Stock  (provided
that any shares of such series are issued and outstanding), whenever any vote of
the holders of voting  stock is  required,  and in addition to any other vote of
holders of voting stock that is required by this Certificate of Incorporation or
by law,  the  affirmative  vote of a majority of the total votes  eligible to be
cast by holders of voting stock with respect to such amendment or repeal, voting
together as a single class, at a duly constituted meeting of stockholders called
expressly for such purpose  shall be required to amend or repeal any  provisions
of this Certificate of Incorporation;  provided,  however,  that, subject to the
terms of any series of Preferred  Stock (provided that any shares of such series
are issued and outstanding), the affirmative vote of not less than two-thirds of
the total votes eligible to be cast by holders of voting stock,  voting together
a single  class,  shall be required to amend or repeal any of the  provisions of
Article V, VII, VIII, IX OR X of this Certificate of Incorporation."

         5. Of the 2,643,440  shares of common stock, par value $0.01 per share,
outstanding  as of the record date for the Annual Meeting of April 10, 1997, all
of which were entitled to vote on the  amendments as a class,  2,299,577  shares
were present and voted at the Annual  Meeting,  either in person or by proxy. Of
such shares,  2,299,577  shares were voted FOR the amendments and no shares were
voted AGAINST the amendments.  The number of shares voted for the amendments was
sufficient for their approval.

         6. Except to the extent  expressly  amended hereby,  the Certificate of
Incorporation of the Corporation shall remain in full force and effect.

         IN WITNESS WHEREOF, PerArdua Corporation has caused this Certificate to
be executed by Samuel P. Sears,  Jr.,  Secretary of the Corporation and its duly
authorized officer, on the 24th day of April, 1997.

                                                       PERARDUA CORPORATION


                                                       By:
                                                          ----------------------
                                                           Samuel P. Sears, Jr.,
                                                           Secretary

                                       2



                                                                     EXHIBIT 3.2

                                     BYLAWS

                                       OF

                              PERARDUA CORPORATION

                                    ARTICLE I
                                  ------------
                                  Stockholders
                                  ------------

         SECTION 1. Annual Meeting.  The annual meeting of stockholders shall be
held at the hour,  date and place  within or without the United  States which is
fixed by the majority of the Board of Directors,  the Chairman of the Board,  if
one is elected, or the President, which time, date and place may subsequently be
changed at any time by vote of the Board of Directors.  If no annual meeting has
been held for a period of thirteen  months after the  Corporation's  last annual
meeting of stockholders, a special meeting in lieu thereof may be held, and such
special  meeting shall have, for the purposes of these Bylaws or otherwise,  all
the force and effect of an annual meeting.  Any and all references  hereafter in
these  Bylaws to an annual  meeting or annual  meetings  also shall be deemed to
refer to any special meeting(s) in lieu thereof.

         SECTION 2. Matters to be Considered at Annual  Meetings.  At any annual
meeting of  stockholders  or any  special  meeting in lieu of annual  meeting of
stockholders (the "Annual Meeting"),  only such business shall be conducted, and
only such  proposals  shall be acted upon, as shall have been  properly  brought
before such Annual  Meeting.  To be  considered  as properly  brought  before an
Annual  Meeting,  business must be: (a) specified in the notice of meeting,  (b)
otherwise  properly  brought  before the meeting by, or at the direction of, the
Board of Directors,  or (c) otherwise properly brought before the meeting by any
holder of record  (both as of the time  notice of such  proposal is given by the
stockholder  as set forth below and as of the record date for the Annual Meeting
in question) of any shares of capital stock of the Corporation  entitled to vote
at such Annual  Meeting who  complies  with the  requirements  set forth in this
Section 2.

         In addition to any other  applicable  requirements,  for business to be
properly  brought  before an Annual  Meeting by a  stockholder  of record of any
shares  of  capital  stock  entitled  to  vote  at  such  Annual  Meeting,  such
stockholder  shall:  (i) give timely notice as required by this Section 2 to the
Secretary  of the  Corporation  and (ii) be present at such  meeting,  either in
person  or by a  representative.  For the first  Annual  Meeting  following  the
initial  public  offering of common stock of the  Corporation,  a  stockholder's
notice  shall be timely if  delivered  to, or  mailed to and  received  by,  the
Corporation  at its  principal  executive  office  not  later  than the close of
business  on the later of (A) the 75th day prior to the  scheduled  date of such
Annual  Meeting  or  (B)  the  15th  day  following  the  day  on  which  public
announcement  of






the date of such of such Annual  Meeting is first made by the  Corporation.  For
all  subsequent  Annual  Meetings,  a  stockholder's  notice  shall be timely if
delivered  to, or mailed to and received by, the  Corporation  at its  principal
executive  office  not less  than 75 days nor  more  than 120 days  prior to the
anniversary date of the immediately  preceding Annual Meeting (the  "Anniversary
Date"); provided,  however, that in the event the Annual Meeting is scheduled to
be held on a date more than 30 days before the Anniversary  Date or more than 60
days after the  Anniversary  Date,  a  stockholder's  notice  shall be timely if
delivered  to, or mailed to and received by, the  Corporation  at its  principal
executive  office not later than the close of  business  on the later of (A) the
75th day prior to the scheduled  date of such Annual Meeting or (B) the 15th day
following  the day on  which  public  announcement  of the  date of such  Annual
Meeting is first made by the Corporation.

         For purposes of these Bylaws,  "public  announcement"  shall mean:  (i)
disclosure in a press release reported by the Dow Jones News Service, Associated
Press or comparable national news service, (ii) a report or other document filed
publicly  with  the  Securities  and  Exchange  Commission  (including,  without
limitation,  a Form 8-K),  or (iii) a letter or report sent to  stockholders  of
record of the Corporation at the time of the mailing of such letter or report.

         A  stockholder's  notice  to the  Secretary  shall set forth as to each
matter proposed to be brought before an Annual Meeting:  (i) a brief description
of the business the stockholder  desires to bring before such Annual Meeting and
the reasons for conducting such business at such Annual  Meeting,  (ii) the name
and address,  as they appear on the  Corporation's  stock transfer books, of the
stockholder proposing such business, (iii) the class and number of shares of the
Corporation's capital stock beneficially owned by the stockholder proposing such
business,  (iv) the names and addresses of the beneficial owners, if any, of any
capital stock of the Corporation  registered in such  stockholder's name on such
books,  and the class and number of shares of the  Corporation's  capital  stock
beneficially  owned by such  beneficial  owners,  (v) the names and addresses of
other stockholders  known by the stockholder  proposing such business to support
such proposal,  and the class and number of shares of the Corporation's  capital
stock  beneficially  owned by such  other  stockholders,  and (vi) any  material
interest of the stockholder proposing to bring such business before such meeting
(or any  other  stockholders  known  to be  supporting  such  proposal)  in such
proposal.

         If the Board of Directors or a designated  committee thereof determines
that any  stockholder  proposal was not made in a timely  fashion in  accordance
with the  provisions  of this  Section 2 or that the  information  provided in a
stockholder's  notice  does not  satisfy the  information  requirements  of this
Section 2 in any material  respect,  such  proposal  shall not be presented  for
action at the Annual Meeting in question.  If neither the Board of Directors nor
such  committee  makes a  determination  as to the  validity of any  stockholder
proposal  in the manner set forth  above,  the  presiding  officer of the Annual
Meeting shall determine whether the stockholder  proposal was made in accordance
with the terms of this Section 2. If the presiding  officer  determines that any
stockholder  proposal was not made in a timely  fashion in  accordance  with the
provisions of this Section 2 or that the information provided in a stockholder's
notice does not satisfy the  information  requirements  of this Section 2 in any




                                       2



material respect,  such proposal shall not be presented for action at the Annual
Meeting in question.  If the Board of Directors,  a designated committee thereof
or the presiding  officer  determines  that a  stockholder  proposal was made in
accordance with the requirements of this Section 2, the presiding  officer shall
so declare at the Annual  Meeting and ballots  shall be provided  for use at the
meeting with respect to such proposal.

         Notwithstanding  the foregoing  provisions of this Bylaw, a stockholder
shall also comply with all applicable  requirements  of the Securities  Exchange
Act of 1934,  as  amended  (the  "Exchange  Act") and the rules and  regulations
thereunder  with respect to the matters set forth in this Bylaw,  and nothing in
this  Bylaw  shall be deemed to affect  any  rights of  stockholders  to request
inclusion of proposals in the  Corporation's  proxy  statement  pursuant to Rule
14a-8 under the Exchange Act.

         SECTION 3. Special  Meetings.  Except as otherwise  required by law and
subject to the rights,  if any, of the holders of any series of Preferred Stock,
special  meetings of the  stockholders  of the Corporation may be called only by
the Board of Directors pursuant to a resolution approved by the affirmative vote
of a majority of the Directors then in office.

         SECTION 4. Matters to be  Considered  at Special  Meetings.  Only those
matters set forth in the notice of the  special  meeting  may be  considered  or
acted  upon at a special  meeting of  stockholders  of the  Corporation,  unless
otherwise provided by law.

         SECTION 5. Notice of Meetings;  Adjournments.  A written  notice of all
Annual  Meetings  stating the hour, date and place of such Annual Meetings shall
be given by the Secretary or an Assistant  Secretary (or other person authorized
by these  Bylaws or by law) not less  than 10 days nor more than 60 days  before
the Annual  Meeting,  to each  stockholder  entitled to vote thereat and to each
stockholder who, by law or under the Certificate of Incorporation or under these
Bylaws,  is  entitled to such  notice,  by  delivering  such notice to him or by
mailing it,  postage  prepaid,  addressed to such  stockholder at the address of
such stockholder as it appears on the  Corporation's  stock transfer books. Such
notice  shall be deemed to be delivered  when hand  delivered to such address or
deposited in the mail so addressed, with postage prepaid.

         Notice of all special  meetings of  stockholders  shall be given in the
same manner as provided for Annual  Meetings,  except that the written notice of
all special  meetings  shall state the purpose or purposes for which the meeting
has been called.

         Notice of an Annual Meeting or special meeting of stockholders need not
be given to a  stockholder  if a written  waiver  of notice is signed  before or
after such  meeting by such  stockholder  or if such  stockholder  attends  such
meeting,  unless such attendance was for the express purpose of objecting at the
beginning of the meeting to the transaction of any business  because the meeting
was not lawfully  called or convened.  Neither the business to be transacted at,
nor the purpose of, any Annual Meeting or special meeting of  stockholders  need
be specified in any written waiver of notice.




                                       3




         The Board of  Directors  may  postpone and  reschedule  any  previously
scheduled  Annual Meeting or special meeting of stockholders and any record date
with respect thereto, regardless of whether any notice or public disclosure with
respect to any such meeting has been sent or made  pursuant to Section 2 of this
Article I or Section 3 of Article II hereof or otherwise.  In no event shall the
public  announcement  of an  adjournment,  postponement  or  rescheduling of any
previously scheduled meeting of stockholders  commence a new time period for the
giving of a  stockholder's  notice under Section 2 of Article I and Section 3 of
Article II of these Bylaws.

         When any meeting is  convened,  the  presiding  officer may adjourn the
meeting if (a) no quorum is present for the  transaction  of  business,  (b) the
Board of Directors  determines  that  adjournment is necessary or appropriate to
enable  the  stockholders  to  consider  fully  information  which  the Board of
Directors  determines  has not been made  sufficiently  or timely  available  to
stockholders,  or (c) the Board of  Directors  determines  that  adjournment  is
otherwise in the best interests of the  Corporation.  When any Annual Meeting or
special  meeting of  stockholders  is adjourned to another hour,  date or place,
notice need not be given of the adjourned  meeting other than an announcement at
the  meeting at which the  adjournment  is taken of the hour,  date and place to
which the meeting is adjourned;  provided,  however,  that if the adjournment is
for more than 30 days,  or if after the  adjournment  a new record date is fixed
for the adjourned  meeting,  notice of the  adjourned  meeting shall be given to
each stockholder of record entitled to vote thereat and each stockholder who, by
law or under the Corporation's  Certificate of Incorporation or these Bylaws, is
entitled to such notice.

         SECTION 6. Quorum. The holders of shares of voting stock representing a
majority of the voting power of the  outstanding  shares of voting stock issued,
outstanding  and entitled to vote at a meeting of  stockholders,  represented in
person or by proxy at such meeting,  shall constitute a quorum; but if less than
a quorum is present at a meeting,  the holders of voting  stock  representing  a
majority of the voting power present at the meeting or the presiding officer may
adjourn the meeting from time to time,  and the meeting may be held as adjourned
without  further  notice,  except as provided in Section 5 of this Article I. At
such  adjourned  meeting  at which a quorum  is  present,  any  business  may be
transacted  which  might  have been  transacted  at the  meeting  as  originally
noticed.  The stockholders present at a duly constituted meeting may continue to
transact business until  adjournment,  notwithstanding  the withdrawal of enough
stockholders to leave less than a quorum.

         SECTION 7.  Voting and  Proxies.  Stockholders  shall have one vote for
each share of stock  entitled to vote owned by them of record  according  to the
books  of  the  Corporation,   unless  otherwise  provided  by  law  or  by  the
Corporation's  Certificate  of  Incorporation.  Stockholders  may vote either in
person or by  written  proxy,  but no proxy  shall be voted or acted  upon after
three  years  from its date,  unless  the proxy  provides  for a longer  period.
Proxies  shall be filed with the  Secretary  of the meeting  before being voted.
Except as otherwise  limited  therein or as otherwise  provided by law,  proxies
shall entitle the persons  authorized thereby to vote at any adjournment of such
meeting,  but they shall not be valid after final adjournment of such meeting. A
proxy with  respect to stock  held in the name of two or more  persons  shall be
valid if  executed  by or on behalf of any one of them unless at or prior to



                                       4




the exercise of the proxy the Corporation  receives a specific written notice to
the contrary  from any one of them. A proxy  purporting  to be executed by or on
behalf  of a  stockholder  shall be deemed  valid,  and the  burden  of  proving
invalidity shall rest on the challenger.

         SECTION 8.  Action at  Meeting.  When a quorum is  present,  any matter
before any meeting of stockholders shall be decided by the vote of a majority of
the voting power of shares of voting stock,  present in person or represented by
proxy at such meeting and entitled to vote on such matter, except where a larger
vote is required by law, by the Certificate of Incorporation or by these Bylaws.
Any election by  stockholders  shall be  determined  by a plurality of the votes
cast,  except  where a larger vote is required  by law,  by the  Certificate  of
Incorporation  or by  these  Bylaws.  The  Corporation  shall  not  directly  or
indirectly  vote  any  shares  of its own  stock;  provided,  however,  that the
Corporation may vote shares which it holds in a fiduciary capacity to the extent
permitted by law.

         SECTION 9. Stockholder  Lists. The Secretary or an Assistant  Secretary
(or the Corporation's  transfer agent or other person authorized by these Bylaws
or by law) shall prepare and make, at least 10 days before every Annual  Meeting
or special meeting of stockholders, a complete list of the stockholders entitled
to vote at the meeting,  arranged in alphabetical order, and showing the address
of each  stockholder  and the  number of shares  registered  in the name of each
stockholder.  Such list shall be open to the examination of any stockholder, for
any purpose germane to the meeting, during ordinary business hours, for a period
of at least 10 days  prior to the  meeting,  either at a place  within  the city
where the meeting is to be held, which place shall be specified in the notice of
the meeting,  or, if not so  specified,  at the place where the meeting is to be
held.  The list shall also be produced  and kept at the hour,  date and place of
the  meeting  during  the  whole  time  thereof,  and  may be  inspected  by any
stockholder who is present.

         SECTION 10.  Presiding  Officer.  The Chairman of the Board,  if one is
elected,  or if not elected or in his absence,  the President,  shall preside at
all Annual  Meetings  or special  meetings  of  stockholders  and shall have the
power,  among other things, to adjourn such meeting at any time and from time to
time,  subject to Sections 5 and 6 of this  Article I. The order of business and
all other  matters of  procedure  at any  meeting of the  stockholders  shall be
determined by the presiding officer.

         SECTION  11.  Voting  Procedures  and  Inspectors  of  Elections.   The
Corporation  shall,  in advance of any meeting of  stockholders,  appoint one or
more  inspectors to act at the meeting and make a written  report  thereof.  The
Corporation may designate one or more persons as alternate inspectors to replace
any inspector who fails to act. If no inspector or alternate is able to act at a
meeting  of  stockholders,  the  presiding  officer  shall  appoint  one or more
inspectors  to act at the  meeting.  Any  inspector  may,  but need  not,  be an
officer, employee or agent of the Corporation.  Each inspector,  before entering
upon the  discharge  of his duties,  shall take and sign an oath  faithfully  to
execute the duties of inspector  with strict  impartiality  and according to the
best of his or her  ability.  The  inspectors  shall  perform such duties as are
required by the General  Corporation  Law of the State of  Delaware,  as amended
from  time to time,  including  the  counting  of all  votes  and  ballots.  The
inspectors  may  appoint




                                       5



or retain other persons or entities to assist the inspectors in the  performance
of  the  duties  of  the  inspectors.  The  presiding  officer  may  review  all
determinations  made by the  inspectors,  and in so doing the presiding  officer
shall be entitled to exercise his or her sole judgment and  discretion and he or
she  shall  not be bound by any  determinations  made by the  inspector(s).  All
determinations  by the inspector(s)  and, if applicable,  the presiding  officer
shall be subject to further review by any court of competent jurisdiction.


                                   ARTICLE II
                                   ----------
                                    Directors
                                    ---------

         SECTION 1. Powers. The business and affairs of the Corporation shall be
managed by or under the direction of the Board of Directors  except as otherwise
provided by the Certificate of Incorporation or required by law.

         SECTION 2. Number and Terms.  The number and terms of  Directors of the
Corporation  shall  be in  accordance  with  the  Corporation's  Certificate  of
Incorporation.

         SECTION 3. Director Nominations. Nominations of candidates for election
as directors of the  Corporation  at any Annual Meeting may be made only (a) by,
or at the  direction  of, a  majority  of the Board of  Directors  or (b) by any
holder of record (both as of the time notice of such  nomination is given by the
stockholder  as set forth below and as of the record date for the Annual Meeting
in question) of any shares of the capital stock of the  Corporation  entitled to
vote at such Annual  Meeting who  complies  with the timing,  informational  and
other  requirements  set forth in this Section 3. Any  stockholder  who seeks to
make such a nomination  or his  representative  must be present in person at the
Annual  Meeting.  Only persons  nominated in accordance  with the procedures set
forth in this Section 3 shall be eligible for election as directors at an Annual
Meeting.

         Nominations,  other  than those  made by, or at the  direction  of, the
Board of  Directors,  shall be made  pursuant to timely notice in writing to the
Secretary  of the  Corporation  as set  forth in this  Section  3. For the first
Annual  Meeting  following  the initial  public  offering of common stock of the
Corporation,  a stockholder's  notice shall be timely if delivered to, or mailed
to and received by, the Corporation at its principal  executive office not later
than  the  close of  business  on the  later  of (A) the  75th day  prior to the
scheduled  date of such Annual  Meeting or (B) the 15th day following the day on
which public  announcement  of the date of such Annual  Meeting is first made by
the  Corporation.  For all subsequent  Annual Meetings,  a stockholder's  notice
shall be timely if delivered  to, or mailed to and received by, the  Corporation
at its principal  executive  office not less than 75 days nor more than 120 days
prior to the Anniversary Date; provided,  however,  that in the event the Annual
Meeting  is  scheduled  to be  held on a date  more  than  30  days  before  the
Anniversary   Date  or  more  than  60  days  after  the  Anniversary   Date,  a
stockholder's notice shall be timely if delivered to, or mailed and received by,
the  Corporation at its principal  executive  office not later than the close of
business  on the later of (i) the 75th day prior to the  scheduled  date of such
Annual  Meeting  or



                                       6




(ii) the 15th day following the day on which public  announcement of the date of
such Annual Meeting is first made by the Corporation.

         A  stockholder's  notice  to the  Secretary  shall set forth as to each
person whom the stockholder  proposes to nominate for election or re-election as
a director:  (i) the name, age,  business address and residence  address of such
person,  (ii) the principal  occupation or employment of such person,  (iii) the
class  and  number  of  shares  of the  Corporation's  capital  stock  which are
beneficially  owned by such person on the date of such stockholder  notice,  and
(iv)  the  consent  of each  nominee  to  serve  as a  director  if  elected.  A
stockholder's  notice  to  the  Secretary  shall  further  set  forth  as to the
stockholder giving such notice: (i) the name and address,  as they appear on the
Corporation's  stock transfer books,  of such  stockholder and of the beneficial
owners  (if  any)  of  the  Corporation's   capital  stock  registered  in  such
stockholder's  name and the name and address of other stockholders known by such
stockholder  to be  supporting  such  nominee(s),  (ii) the class and  number of
shares of the Corporation's capital stock which are held of record, beneficially
owned or represented by proxy by such stockholder and by any other  stockholders
known by such  stockholder to be supporting  such  nominee(s) on the record date
for the  Annual  Meeting  in  question  (if such date  shall then have been made
publicly  available) and on the date of such  stockholder's  notice, and (iii) a
description of all arrangements or  understandings  between such 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  such
stockholder.

         If the Board of Directors or a designated  committee thereof determines
that any stockholder nomination was not timely made in accordance with the terms
of this Section 3 or that the  information  provided in a  stockholder's  notice
does  not  satisfy  the  informational  requirements  of this  Section  3 in any
material  respect,  then such  nomination  shall not be considered at the Annual
Meeting in question.  If neither the Board of Directors nor such committee makes
a  determination  as to whether a  nomination  was made in  accordance  with the
provisions of this Section 3, the presiding  officer of the Annual Meeting shall
determine  whether a nomination was made in accordance with such provisions.  If
the presiding officer determines that any stockholder  nomination was not timely
made in  accordance  with the terms of this  Section  3 or that the  information
provided  in  a  stockholder's   notice  does  not  satisfy  the   informational
requirements  of this Section 3 in any material  respect,  then such  nomination
shall not be  considered  at the  Annual  Meeting in  question.  If the Board of
Directors,  a designated  committee thereof or the presiding officer  determines
that a nomination  was made in accordance  with the terms of this Section 3, the
presiding  officer  shall so declare at the Annual  Meeting and ballots shall be
provided for use at the meeting with respect to such nominee.

         Notwithstanding  anything to the contrary in the second sentence of the
second paragraph of this Section 3, in the event that the number of directors to
be elected to the Board of Directors of the  Corporation  is increased and there
is no public  announcement  by the  Corporation  naming all of the  nominees for
director or specifying the size of the increased  Board of Directors at least 75
days prior to the  Anniversary  Date, a  stockholder's  notice  required by this
Section 3 shall also be considered timely, but only with respect to nominees




                                       7



for any new  positions  created  by such  increase,  if  such  notice  shall  be
delivered  to, or mailed to and received by, the  Corporation  at its  principal
executive  office not later than the close of business on the 15th day following
the day on which such public announcement is first made by the Corporation.

         No person  shall be elected by the  stockholders  as a Director  of the
Corporation unless nominated in accordance with the procedures set forth in this
Section.  Election of  Directors  at the annual  meeting  need not be by written
ballot, unless otherwise provided by the Board of Directors or presiding officer
at such annual meeting.  If written ballots are to be used,  ballots bearing the
names of all the persons who have been  nominated  for  election as Directors at
the annual  meeting in accordance  with the procedures set forth in this Section
shall be provided for use at the annual meeting.

         SECTION 4. Qualification.  No  Director  need be a  stockholder  of the
Corporation.

         SECTION 5. Vacancies.   Except  as  otherwise  fixed  pursuant  to  the
provisions of Article IV of the Certificate of  Incorporation of the Corporation
relating to the rights of the holders of any series of preferred  stock to elect
Directors,  any and all vacancies in the Board of Directors,  however occurring,
including,  without limitation, by reason of an increase in size of the Board of
Directors, or the death, resignation, disqualification or removal of a Director,
shall be filled  solely by the  affirmative  vote of a majority of the remaining
Directors then in office,  even if less than a quorum of the Board of Directors.
Any Director  appointed in  accordance  with the preceding  sentence  shall hold
office for the remainder of the full term of the class of Directors in which the
new  directorship  was created or the vacancy occurred and until such Director's
successor shall have been duly elected and qualified or until his or her earlier
resignation or removal.  When the number of Directors is increased or decreased,
the  Board of  Directors  shall  determine  the  class or  classes  to which the
increased  or  decreased  number of Directors  shall be  apportioned;  provided,
however,  that no decrease in the number of Directors  shall shorten the term of
any incumbent Director. In the event of a vacancy in the Board of Directors, the
remaining  Directors,  except as  otherwise  provided by law,  may  exercise the
powers of the full Board of Directors until the vacancy is filled.

         SECTION 6. Removal.  Directors may be removed from office in the manner
provided in the Corporation's Certificate of Incorporation.

         SECTION 7. Resignation.  A  Director  may  resign at any time by giving
written notice to the Chairman of the Board, if one is elected, the President or
the  Secretary.  A  resignation  shall be  effective  upon  receipt,  unless the
resignation otherwise provides.

         SECTION 8. Regular Meetings. The regular annual meeting of the Board of
Directors shall be held,  without notice other than this Bylaw, on the same date
and at the same place as the Annual Meeting  following the close of such meeting
of stockholders. Other regular meetings of the Board of Directors may be held at
such hour,  date and place as the Board of Directors may by resolution from time
to time determine without notice other than such resolution.



                                       8



         SECTION 9. Special Meetings. Special meetings of the Board of Directors
may be called,  orally or in writing,  by or at the request of a majority of the
Directors,  the Chairman of the Board, if one is elected, or the President.  The
person  calling any such special  meeting of the Board of Directors  may fix the
hour, date and place thereof.

         SECTION 10. Notice of Meetings.  Notice of the hour,  date and place of
all special  meetings of the Board of Directors  shall be given to each Director
by the Secretary or an Assistant  Secretary,  or in case of the death,  absence,
incapacity or refusal of such persons,  by the Chairman of the Board,  if one is
elected,  or the President or such other  officer  designated by the Chairman of
the Board, if one is elected, or the President. Notice of any special meeting of
the Board of Directors shall be given to each Director in person,  by telephone,
or  by  telex,   telecopy,   telegram,  or  other  written  form  of  electronic
communication,  sent to his  business  or home  address,  at  least  24 hours in
advance of the  meeting,  or by written  notice  mailed to his  business or home
address,  at least 48 hours in  advance of the  meeting.  Such  notice  shall be
deemed  to be  delivered  when  hand  delivered  to such  address,  read to such
Director by telephone,  deposited in the mail so addressed, with postage thereon
prepaid if mailed,  dispatched or transmitted if telexed or telecopied,  or when
delivered to the telegraph company if sent by telegram.

         When any Board of  Directors  meeting,  either  regular or special,  is
adjourned for 30 days or more, notice of the adjourned meeting shall be given as
in the case of an original meeting. It shall not be necessary to give any notice
of the hour, date or place of any meeting  adjourned for less than 30 days or of
the business to be transacted thereat, other than an announcement at the meeting
at which  such  adjournment  is taken of the  hour,  date and place to which the
meeting is adjourned.

         A  written  waiver  of notice  signed  before  or after a meeting  by a
Director  and  filed  with the  records  of the  meeting  shall be  deemed to be
equivalent to notice of the meeting.  The  attendance of a Director at a meeting
shall  constitute  a waiver of notice of such  meeting,  except where a Director
attends a meeting for the express  purpose of objecting at the  beginning of the
meeting to the transaction of any business  because such meeting is not lawfully
called or convened.  Except as otherwise  required by law, by the Certificate of
Incorporation of the Corporation or by these Bylaws,  neither the business to be
transacted at, nor the purpose of, any meeting of the Board of Directors need be
specified in the notice or waiver of notice of such meeting.

         SECTION  11.  Quorum.  At any  meeting  of the  Board of  Directors,  a
majority  of the  Directors  then in office  shall  constitute  a quorum for the
transaction  of business,  but if less than a quorum is present at a meeting,  a
majority of the Directors present may adjourn the meeting from time to time, and
the meeting may be held as adjourned without further notice,  except as provided
in Section 10 of this Article II. Any business which might have been  transacted
at the meeting as originally noticed may be transacted at such adjourned meeting
at which a quorum is present.




                                       9



         SECTION  12.  Action  at  Meetings.  At any  meeting  of the  Board  of
Directors at which a quorum is present,  a majority of the Directors present may
take any action on behalf of the Board of Directors,  unless otherwise  required
by law, by the  Certificate  of  Incorporation  of the  Corporation  or by these
Bylaws.

         SECTION 13. Action by Consent.  Any action  required or permitted to be
taken at any meeting of the Board of Directors may be taken without a meeting if
all members of the Board of Directors  consent thereto in writing.  Such written
consent  shall be  filed  with  the  records  of the  meetings  of the  Board of
Directors  and shall be treated  for all  purposes as a vote at a meeting of the
Board of Directors.

         SECTION 14.  Manner of  Participation.  Directors  may  participate  in
meetings of the Board of Directors by means of  conference  telephone or similar
communications  equipment by means of which all Directors  participating  in the
meeting  can hear each  other,  and  participation  in a meeting  in  accordance
herewith  shall  constitute  presence in person at such  meeting for purposes of
these Bylaws.

         SECTION 15. Committees.  The Board of Directors,  by vote of a majority
of the  Directors  then  in  office,  may  elect  from  its  number  one or more
committees,  including an Executive Committee,  a Compensation  Committee and an
Audit Committee, and may delegate thereto some or all of its powers except those
which by law, by the Certificate of Incorporation of the Corporation or by these
Bylaws may not be  delegated.  Except as the Board of  Directors  may  otherwise
determine,  any such  committee  may make rules for the conduct of its business,
but unless  otherwise  provided by the Board of Directors or in such rules,  its
business shall be conducted so far as possible in the same manner as is provided
by these Bylaws for the Board of Directors. All members of such committees shall
hold  such  offices  at the  pleasure  of the Board of  Directors.  The Board of
Directors may abolish any such committee at any time. Any committee to which the
Board of Directors  delegates  any of its powers or duties shall keep records of
its meetings and shall report its action to the Board of Directors. The Board of
Directors shall have power to rescind any action of any committee, to the extent
permitted by law, but no such rescission shall have retroactive effect.

         SECTION 16.  Compensation  of Directors.  Directors  shall receive such
compensation  for their  services  as shall be  determined  by a majority of the
Board of Directors  provided that  Directors who are serving the  Corporation as
employees and who receive  compensation  for their  services as such,  shall not
receive any salary or other  compensation for their services as Directors of the
Corporation.


                                   ARTICLE III
                                   -----------
                                    Officers
                                    --------

         SECTION 1.  Enumeration.  The officers of the Corporation shall consist
of a President,  a Treasurer,  a Secretary and such other  officers,  including,
without  limitation,  a



                                       10




Chairman of the Board of Directors  and one or more  Vice-Presidents  (including
Executive Vice Presidents or Senior Vice Presidents), Assistant Vice Presidents,
Assistant  Treasurers and Assistant  Secretaries,  as the Board of Directors may
determine.

         SECTION  2.  Election.  At the  regular  annual  meeting  of the  Board
following the annual meeting of stockholders, the Board of Directors shall elect
the President, the Treasurer and the Secretary. Other officers may be elected by
the Board of Directors at such regular  annual meeting of the Board of Directors
or at any other regular or special meeting.

         SECTION  3.  Qualification.  No  officer  need  be a  stockholder  or a
Director.  Any person may occupy more than one office of the  Corporation at any
time. Any officer may be required by the Board of Directors to give bond for the
faithful  performance of his duties in such amount and with such sureties as the
Board of Directors may determine.

         SECTION 4.  Tenure. Except as otherwise  provided by the Certificate of
Incorporation of the Corporation or by these Bylaws, each of the officers of the
Corporation  shall hold office until the regular  annual meeting of the Board of
Directors  following  the next  annual  meeting  of  stockholders  and until his
successor is elected and qualified or until his earlier resignation or removal.

         SECTION 5. Resignation. Any officer may resign by delivering his or her
written  resignation  to  the  Corporation  addressed  to the  President  or the
Secretary,  and such  resignation  shall be effective  upon receipt unless it is
specified to be effective at some other time or upon the happening of some other
event.

         SECTION 6. Removal.  Except as otherwise  provided by law, the Board of
Directors may remove any officer with or without cause by the  affirmative  vote
of a majority of the Directors  then in office;  provided,  however,  that if an
officer  is to be  removed  for  cause,  he or she  may  only be  removed  after
reasonable notice and an opportunity to be heard by the Board of Directors.

         SECTION 7. Absence  or  Disability.  In the  event  of the  absence  or
disability of any officer,  the Board of Directors may designate another officer
to act temporarily in place of such absent or disabled officer.

         SECTION 8. Vacancies.  Any  vacancy in any office may be filled for the
unexpired portion of the term by the Board of Directors.

         SECTION 9. President.   Unless  otherwise  provided  by  the  Board  of
Directors or the Certificate of Incorporation,  the President shall be the Chief
Executive Officer of the Corporation and shall,  subject to the direction of the
Board of Directors,  have general  supervision and control of the  Corporation's
business. If there is no Chairman of the Board or if he is absent, the President
shall preside, when present, at all meetings of stockholders and of the Board of
Directors.  The  President  shall have such other  powers and perform such other
duties as the Board of Directors may from time to time designate.




                                       11




         SECTION 10. Chairman of the Board. The Chairman of the Board, if one is
elected, shall preside, when present, at all meetings of the stockholders and of
the Board of  Directors.  The Chairman of the Board shall have such other powers
and shall  perform such other duties as the Board of Directors  may from time to
time designate.

         SECTION 11.  Vice  Presidents  and Assistant Vice Presidents.  Any Vice
President  (including any Executive Vice President or Senior Vice President) and
any  Assistant  Vice  President  shall have such powers and shall  perform  such
duties as the Board of Directors or the Chief Executive Officer may from time to
time designate.

         SECTION 12.  Treasurer and Assistant  Treasurers.  The Treasurer shall,
subject to the  direction of the Board of  Directors  and except as the Board of
Directors or the Chief  Executive  Officer may otherwise  provide,  have general
charge of the financial  affairs of the  Corporation  and shall cause to be kept
accurate  books of  account.  The  Treasurer  shall  have  custody of all funds,
securities, and valuable documents of the Corporation. He or she shall have such
other duties and powers as may be  designated  from time to time by the Board of
Directors or the Chief Executive Officer.

         Any Assistant  Treasurer shall have such powers and perform such duties
as the Board of Directors or the Chief  Executive  Officer may from time to time
designate.

         SECTION 13.  Secretary and Assistant  Secretaries.  The Secretary shall
record all the proceedings of the meetings of the  stockholders and the Board of
Directors (including committees of the Board) in books kept for that purpose. In
his absence from any such meeting,  a temporary  secretary chosen at the meeting
shall record the  proceedings  thereof.  The Secretary  shall have charge of the
stock ledger (which may, however,  be kept by any transfer or other agent of the
Corporation).  The Secretary shall have custody of the seal of the  Corporation,
and the Secretary,  or an Assistant Secretary,  shall have authority to affix it
to any instrument  requiring it, and, when so affixed,  the seal may be attested
by his or her signature or that of an Assistant  Secretary.  The Secretary shall
have such other duties and powers as may be designated  from time to time by the
Board of  Directors  or the  Chief  Executive  Officer.  In the  absence  of the
Secretary,   any  Assistant   Secretary  may  perform  his  or  her  duties  and
responsibilities.

         Any Assistant  Secretary shall have such powers and perform such duties
as the Board of Directors or the Chief  Executive  Officer may from time to time
designate.

         SECTION 14.  Other  Powers and Duties.  Subject to these  Bylaws and to
such limitations as the Board of Directors may from time to time prescribe,  the
officers of the Corporation  shall each have such powers and duties as generally
pertain to their respective  offices,  as well as such powers and duties as from
time to time may be conferred  by the Board of Directors or the Chief  Executive
Officer.


                                       12





                                   ARTICLE IV
                                   ----------
                                  Capital Stock
                                  -------------

         SECTION 1. Certificates of Stock. Each stockholder shall be entitled to
a certificate  of the capital stock of the  Corporation in such form as may from
time to time be prescribed by the Board of Directors.  Such certificate shall be
signed by the Chairman of the Board of Directors,  Vice Chairman of the Board of
Directors,  the  President  or a  Vice  President  and by  the  Treasurer  or an
Assistant Treasurer, or the Secretary or an Assistant Secretary. The Corporation
seal and the  signatures  by  Corporation  officers,  the transfer  agent or the
registrar may be  facsimiles.  In case any officer,  transfer agent or registrar
who has signed or whose facsimile  signature has been placed on such certificate
shall have ceased to be such officer,  transfer  agent or registrar  before such
certificate is issued,  it may be issued by the Corporation with the same effect
as if he were  such  officer,  transfer  agent or  registrar  at the time of its
issue.  Every  certificate  for  shares  of  stock  which  are  subject  to  any
restriction  on transfer and every  certificate  issued when the  Corporation is
authorized  to issue more than one class or series of stock shall  contain  such
legend with respect thereto as is required by law.

         SECTION 2.  Transfers.  Subject to any  restrictions  on  transfer  and
unless  otherwise  provided  by the Board of  Directors,  shares of stock may be
transferred  only  on the  books  of the  Corporation  by the  surrender  to the
Corporation  or its  transfer  agent  of the  certificate  theretofore  properly
endorsed or  accompanied by a written  assignment or power of attorney  properly
executed,  with transfer stamps (if necessary)  affixed,  and with such proof of
the  authenticity  of signature  as the  Corporation  or its transfer  agent may
reasonably require.

         SECTION 3. Record Holders.  Except as may otherwise be required by law,
by the Certificate of Incorporation  of the Corporation or by these Bylaws,  the
Corporation  shall be entitled  to treat the record  holder of stock as shown on
its books as the owner of such stock for all purposes,  including the payment of
dividends  and the  right  to  vote  with  respect  thereto,  regardless  of any
transfer,  pledge or other disposition of such stock, until the shares have been
transferred on the books of the Corporation in accordance with the  requirements
of these Bylaws.

         It shall be the duty of each  stockholder to notify the  Corporation of
his or her post office address and any changes thereto.

         SECTION 4. Record Date. In order that the Corporation may determine the
stockholders  entitled to notice of or to vote at any meeting of 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 a record date, which record
date shall not precede the date upon which the resolution fixing the record date
is adopted by the Board of Directors,  and which record date: (1) in the case of
determination  of stockholders  entitled to vote at any meeting of stockholders,
shall,  unless



                                       13




otherwise  required by law, not be more than sixty nor less than ten days before
the date of such meeting and (2) in the case of any other  action,  shall not be
more than sixty days prior to such other action. If no record date is fixed: (1)
the record date for determining stockholders entitled to notice of or to vote at
a meeting  of  stockholders  shall be at the close of  business  on the day next
preceding  the day on which  notice is given,  or, if notice is  waived,  at the
close of business on the day next preceding the day on which the meeting is held
and (2) the record date for determining stockholders for any other purpose shall
be at the close of  business on the day on which the Board of  Directors  adopts
the resolution relating thereto.

         SECTION 5.  Replacement of  Certificates.  In case of the alleged loss,
destruction or mutilation of a certificate of stock, a duplicate certificate may
be  issued in place  thereof,  upon such  terms as the  Board of  Directors  may
prescribe.



                                    ARTICLE V
                                    ---------
                            Miscellaneous Provisions
                            ------------------------


         SECTION 1. Fiscal Year. Except as otherwise  determined by the Board of
Directors,  the  fiscal  year of the  Corporation  shall  end on the last day of
November of each year.

         SECTION 2.  Seal. The Board of Directors  shall have power to adopt and
alter the seal of the Corporation.

         SECTION 3.  Execution of  Instruments.  All deeds,  leases,  transfers,
contracts,  bonds,  notes  and  other  obligations  to be  entered  into  by the
Corporation in the ordinary course of its business  without  Director action may
be executed on behalf of the Corporation by the Chairman of the Board, if one is
elected, the President or the Treasurer or any other officer,  employee or agent
of the  Corporation  as the  Board  of  Directors  or  Executive  Committee  may
authorize.

         SECTION  4.  Voting  of  Securities.  Unless  the  Board  of  Directors
otherwise provides,  the Chairman of the Board, if one is elected, the President
or the Treasurer may waive notice of and act on behalf of this  Corporation,  or
appoint  another  person or persons to act as proxy or attorney in fact for this
Corporation with or without discretionary power and/or power of substitution, at
any  meeting  of  stockholders  or  shareholders  of any  other  corporation  or
organization, any of whose securities are held by this Corporation.

         SECTION 5. Resident  Agent.  The  Board  of  Directors  may  appoint  a
resident agent upon whom legal process may be served in any action or proceeding
against the Corporation.

         SECTION 6 Corporate  Records.  The  original or attested  copies of the
Certificate  of  Incorporation,  Bylaws  and  records  of  all  meetings  of the
incorporators,  stockholders  and the Board of Directors and the stock  transfer
books, which shall contain the names of all



                                       14




stockholders,  their record  addresses and the amount of stock held by each, may
be kept outside the State of Delaware and shall be kept at the principal  office
of the Corporation, at the office of its counsel or at an office of its transfer
agent or at such other place or places as may be designated from time to time by
the Board of Directors.

         SECTION 7. Certificate of Incorporation. All references in these Bylaws
to the Certificate of Incorporation  shall be deemed to refer to the Certificate
of Incorporation of the Corporation, as amended and in effect from time to time.

         SECTION 8.  Amendment of Bylaws.

         (a) Amendment by Directors.  Except as provided otherwise by law, these
Bylaws may be amended or repealed by the  affirmative  vote of a majority of the
Directors then in office.

         (b) Amendment by Stockholders.  These Bylaws may be amended or repealed
at any annual meeting of stockholders, or special meeting of stockholders called
for such purpose,  by the affirmative  vote of at least  two-thirds of the total
votes  eligible  to be cast on such  amendment  or repeal by  holders  of voting
stock, voting together as a single class;  provided,  however, that if the Board
of Directors  recommends that  stockholders  approve such amendment or repeal at
such meeting of  stockholders,  such  amendment or repeal shall only require the
affirmative  vote of a majority of the total  votes  eligible to be cast on such
amendment  or repeal by holders of voting  stock,  voting  together  as a single
class.
  
                                       15






                            AMENDMENTS TO THE BYLAWS
                                       OF
                              PERARDUA CORPORATION

1.   Article I,  Section 3 of the Bylaws is amended in its  entirety  to read as
     follows:

         "SECTION 3. Special Meetings.  Except as otherwise  required by law and
     subject to the rights,  if any,  of the holders of any series of  Preferred
     Stock,  special  meetings of the  stockholders  of the  Corporation  may be
     called only by (i) the Board of Directors pursuant to a resolution approved
     by the affirmative  vote of a majority of the Directors then in office,  or
     (ii) one or more stockholders  holding shares in the aggregate  entitled to
     cast  not less  than  ten  percent  (10%)  of the  votes  at that  meeting.
     Stockholders  wishing to call a special meeting of stockholders  shall send
     by registered  mail, or deliver to, the Secretary of the Corporation at the
     principal  executive office of the Corporation a request in writing,  which
     request shall state (i) a brief  description of each item of business to be
     brought  before the special  meeting and the  reasons for  conducting  such
     business at the special meeting,  (ii) the name and address, as they appear
     on the  Corporation's  stock transfer books, of each stockholder  proposing
     such  business,  (iii) the class and number of shares of the  Corporation's
     capital  stock  beneficially  owned  by  each  stockholder  proposing  such
     business, (iv) the names and addresses of the beneficial owners, if any, of
     any capital stock of the Corporation  registered in each such stockholder's
     name on such books, and the class and number of shares of the Corporation's
     capital stock  beneficially  owned by such beneficial  owners,  and (v) any
     material  interest of each  stockholder  proposing  to bring such  business
     before such meeting in such  proposal.  Upon due receipt of such a request,
     it shall be the duty of the Secretary of the Corporation, within 15 days of
     receipt of such  request,  to cause notice to be given to the  stockholders
     entitled to vote that a meeting  will be held on a date to be  specified in
     the  notice of  meeting,  which date  shall be  determined  by the Board of
     Directors of the  Corporation  and shall be not more than 75 days after the
     date of receipt of the stockholder request to call a special meeting."

2.   Article II,  Section 3 of the Bylaws is amended in its  entirety to read as
     follows:

         "SECTION  3.  Director  Nominations.   Nominations  of  candidates  for
     election as directors of the  Corporation  at any Annual Meeting or special
     meeting of stockholders  duly called for the purpose of electing  directors
     (an  "Election  Special  Meeting")  may be  made  only  (a)  by,  or at the
     direction  of, a majority of the Board of Directors or (b) by any holder of
     record  (both  as of the time  notice  of such  nomination  is given by the
     stockholder  as set forth  below and as of the  record  date for the Annual
     Meeting or the Election  Special  Meeting in question) of any shares of the
     capital stock of the Corporation entitled to vote at such Annual Meeting or
     Election  Special Meeting who complies with the timing,  informational  and
     other  requirements  set forth in this Section 3. Any stockholder who seeks
     to make such a nomination or his  representative  must be present in person
     at the  Annual  Meeting  or the  Election  Special  Meeting.  Only  persons
     nominated in  accordance  with the  procedures  set forth in this Section 3
     shall be eligible  for  election as  directors  at an Annual  Meeting or an
     Election Special Meeting.







         Nominations,  other  than those  made by, or at the  direction  of, the
     Board of  Directors,  shall be made pursuant to timely notice in writing to
     the  Secretary of the  Corporation  as set forth in this Section 3. For the
     first Annual Meeting  following the initial public offering of common stock
     of the Corporation, a stockholder's notice shall be timely if delivered to,
     or mailed to and received by, the  Corporation  at its principal  executive
     office  not later than the close of  business  on the later of (A) the 75th
     day prior to the scheduled  date of such Annual Meeting or (B) the 15th day
     following the day on which public  announcement  of the date of such Annual
     Meeting  is  first  made  by the  Corporation.  For all  subsequent  Annual
     Meetings, a stockholder's notice shall be timely if delivered to, or mailed
     to and received by, the Corporation at its principal  executive  office not
     less than 75 days nor more  than 120 days  prior to the  Anniversary  Date;
     provided,  however, that in the event the Annual Meeting is scheduled to be
     held on a date more than 30 days before the  Anniversary  Date or more than
     60 days after the Anniversary Date, a stockholder's  notice shall be timely
     if  delivered  to,  or mailed  and  received  by,  the  Corporation  at its
     principal  executive  office  not later than the close of  business  on the
     later of (i) the  75th  day  prior  to the  scheduled  date of such  Annual
     Meeting or (ii) the 15th day following the day on which public announcement
     of the date of such Annual Meeting is first made by the Corporation. For an
     Election  Special  Meeting,  a  stockholder's  notice  shall be  timely  if
     delivered  to,  or  mailed  to and  received  by,  the  Corporation  at its
     principal executive office not later than the close of business on the 15th
     day  following  the day on which a public  announcement  of the date of the
     Election Special Meeting is first made by the Corporation.

         A  stockholder's  notice  to the  Secretary  shall set forth as to each
     person  whom  the   stockholder   proposes  to  nominate  for  election  or
     re-election  as a  director:  (i)  the  name,  age,  business  address  and
     residence  address  of  such  person,  (ii)  the  principal  occupation  or
     employment  of such  person,  (iii) the  class and  number of shares of the
     Corporation's  capital stock which are beneficially owned by such person on
     the date of such stockholder  notice,  and (iv) the consent of each nominee
     to serve as a director if elected. A stockholder's  notice to the Secretary
     shall further set forth as to the stockholder  giving such notice:  (i) the
     name and address, as they appear on the Corporation's stock transfer books,
     of  such  stockholder  and  of  the  beneficial  owners  (if  any)  of  the
     Corporation's  capital stock registered in such  stockholder's name and the
     name and  address of other  stockholders  known by such  stockholder  to be
     supporting  such  nominee(s),  (ii) the class  and  number of shares of the
     Corporation's capital stock which are held of record, beneficially owned or
     represented  by proxy by such  stockholder  and by any  other  stockholders
     known by such  stockholder to be supporting  such  nominee(s) on the record
     date for the Annual Meeting or the Election Special Meeting in question (if
     such date shall then have been made publicly  available) and on the date of
     such  stockholder's  notice, and (iii) a description of all arrangements or
     understandings  between  such  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 such stockholder.

         If the Board of Directors or a designated  committee thereof determines
     that any stockholder  nomination was not timely made in accordance with the
     terms of this Section 3 or that the information provided in a stockholder's
     notice does not satisfy the informational 


                                       2






     requirements  of  this  Section  3  in  any  material  respect,  then  such
     nomination  shall not be considered  at the Annual  Meeting or the Election
     Special  Meeting in question.  If neither the Board of  Directors  nor such
     committee  makes a  determination  as to whether a  nomination  was made in
     accordance with the provisions of this Section 3, the presiding  officer of
     the Annual Meeting or the Election Special Meeting shall determine  whether
     a nomination was made in accordance with such provisions.  If the presiding
     officer  determines that any stockholder  nomination was not timely made in
     accordance  with  the  terms  of this  Section  3 or that  the  information
     provided in a  stockholder's  notice  does not  satisfy  the  informational
     requirements  of  this  Section  3  in  any  material  respect,  then  such
     nomination  shall not be considered  at the Annual  Meeting or the Election
     Special  Meeting  in  question.  If the Board of  Directors,  a  designated
     committee thereof or the presiding officer determines that a nomination was
     made in accordance with the terms of this Section 3, the presiding  officer
     shall so declare at the Annual Meeting or the Election  Special Meeting and
     ballots  shall be  provided  for use at the  meeting  with  respect to such
     nominee.

         Notwithstanding  anything to the contrary in the second sentence of the
     second  paragraph  of this  Section  3, in the  event  that the  number  of
     directors  to be elected to the Board of Directors  of the  Corporation  is
     increased and there is no public announcement by the Corporation naming all
     of the nominees for director or specifying the size of the increased  Board
     of  Directors  at  least  75  days  prior  to  the   Anniversary   Date,  a
     stockholder's  notice  required by this Section 3 shall also be  considered
     timely,  but only with respect to nominees for any new positions created by
     such  increase,  if such  notice  shall be  delivered  to, or mailed to and
     received by, the  Corporation at its principal  executive  office not later
     than the close of business on the 15th day  following the day on which such
     public announcement is first made by the Corporation.

         No person  shall be elected by the  stockholders  as a Director  of the
     Corporation unless nominated in accordance with the procedures set forth in
     this  Section.  Election of Directors at the Annual  Meeting or an Election
     Special Meeting need not be by written ballot, unless otherwise provided by
     the Board of  Directors  or  presiding  officer at such  Annual  Meeting or
     Election  Special  Meeting.  If  written  ballots  are to be used,  ballots
     bearing the names of all the persons who have been  nominated  for election
     as  Directors  at the Annual  Meeting or the  Election  Special  Meeting in
     accordance  with the procedures set forth in this Section shall be provided
     for use at the Annual Meeting or the Election Special Meeting."

3    Article II,  Section 5 of the Bylaws is amended in its  entirety to read as
     follows:

         "SECTION  5.  Vacancies.  Except as  otherwise  fixed  pursuant  to the
     provisions  of  Article  IV of  the  Certificate  of  Incorporation  of the
     Corporation  relating  to the  rights  of the  holders  of  any  series  of
     preferred stock to elect  Directors,  any and all vacancies in the Board of
     Directors,  however occurring,  including, without limitation, by reason of
     an increase in size of the Board of Directors,  or the death,  resignation,
     disqualification  or removal of a Director,  shall be filled  either by the
     affirmative  vote of a majority of the remaining  Directors then in office,
     even if less than a quorum of the Board of  Directors,  or by the vote of a
     plurality of the shares voting at an Annual Meeting or an Election  Special

                                       3







     Meeting. Any Director appointed or elected in accordance with the preceding
     sentence  shall hold office  until the next  Annual  Meeting and until such
     Director's  successor shall have been duly elected and qualified,  or until
     his or her earlier resignation or removal. In the event of a vacancy in the
     Board of Directors,  the remaining Directors,  except as otherwise provided
     by law, may  exercise  the powers of the full Board of Directors  until the
     vacancy is filled."


                                       4







                                                                    EXHIBIT 23.1

                      CONSENT OF INDEPENDENT AUDITORS

    We hereby consent to the use in this  Registration  Statement of our report,
dated January 24, 1997, except for Note 6 as to which the date is April 9, 1997,
relating  to  the  financial  statements  of  PerArdua  Corporation,  and to the
reference to our Firm under the caption "Experts" in the Prospectus.




                                       MCGLADREY & PULLEN, LLP

   
Richmond, Virginia
June 5, 1997
    



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