PROTEIN DATABASES INC /DE/
PRER14A, 1997-09-16
COMPUTER INTEGRATED SYSTEMS DESIGN
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                                  SCHEDULE 14A
                                 (Rule 14a-101)
                     INFORMATION REQUIRED IN PROXY STATEMENT
                            SCHEDULE 14A INFORMATION
                    Proxy Statement Pursuant to Section 14(a)
             of the Securities Exchange Act of 1934 (Amendment No. 1)

Filed by the registrant  |X|

Filed by a party other than the registrant |_| Check the appropriate box:
|X|  Preliminary proxy statement
|_|  Confidential, for use of the Commission Only
     (as permitted by Rule 14a-6(e)(2)
|_|  Definitive proxy statement
|_|  Definitive additional materials
|_|  Soliciting material pursuant to Rules 14a-11(c) or 14a-12

                             PROTEIN DATABASES, INC.
- --------------------------------------------------------------------------------
                  (Name of Registrant as Specified in Charter)

- --------------------------------------------------------------------------------
    (Name of Person(s) filing Proxy Statement, if other than the Registrant)

Payment of filing fee (check the appropriate box):
|X|  No fee required.
|_|  Fee computed on table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

    (1)       Title of each class of securities to which transaction applies:


              ------------------------------------------------------------------
    (2)       Aggregate number of securities to which transaction applies:


              ------------------------------------------------------------------
    (3)       Per unit  price or other  underlying  value of  transaction
              computed pursuant to Exchange Act Rule 0-11. (Set forth the
              amount on which the filing fee is calculated  and state how
              it was determined):


            --------------------------------------------------------------------
    (4)       Proposed maximum aggregate value of transaction:


            --------------------------------------------------------------------
    (5)       Total fee paid:


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

|_|           Fee paid previously with preliminary materials.

|_| Check box if any part of the fee is offset as provided by Exchange  Act Rule
0-11(a)(2)  and  identify  the  filing  for  which the  offsetting  fee was paid
previously.  Identify the previous filing by registration  statement  number, or
the Form or Schedule and the date of its filing:

    (1)       Amount Previously Paid:
            --------------------------------------------------------------------

    (2)       Form, Schedule or Registration Statement No.:
            --------------------------------------------------------------------

    (3)       Filing Party:
            --------------------------------------------------------------------

    (4)       Date Filed:
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                                      - 1 -


<PAGE>
                             PROTEIN DATABASES, INC.
                           775 PARK AVENUE, SUITE 255
                           HUNTINGTON, NEW YORK 11743

                    NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

                                       o


To the Stockholders of
  PROTEIN DATABASES, INC.

         NOTICE IS HEREBY  GIVEN  that a Special  Meeting of  Stockholders  (the
"Meeting") of PROTEIN DATABASES,  INC., a Delaware  corporation (the "Company"),
will be held at o on o at 10:00 A.M. for the following purposes:

          (1) To  consider  and act  upon a  proposal  to  approve  the  Plan of
     Complete  Liquidation  and  Dissolution  attached as Exhibit A to the Proxy
     Statement;

          (2) To consider and act upon a proposal to approve the Asset  Purchase
     Agreement,  dated as of July 16,  1997,  by and  between  the  Company  and
     Bio-Rad Laboratories,  Inc., a Delaware corporation,  attached as Exhibit B
     to the Proxy Statement;

          (3) To  consider  and act upon a  proposal  to change  the name of the
     Company to "IDP Liquidating Corp."; and

          (4) To consider and transact such other  business as may properly come
     before the Meeting or any adjournment thereof.

The Board of Directors unanimously recommends that you vote (i) FOR the approval
of the Plan of Complete  Liquidation and  Dissolution,  (ii) FOR the approval of
the Asset Purchase Agreement, and (iii) FOR the change of the Company's name.

         Only  stockholders of record at the close of business on o are entitled
to notice of, and to vote at, the Meeting or any adjournment thereof.

                                             By Order of the Board of Directors



                                             RONALD R. HAHN
                                             Secretary
Huntington, New York
o

- --------------------------------------------------------------------------------
WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING,  PLEASE  VOTE,  DATE AND SIGN THE
ENCLOSED PROXY, WHICH IS SOLICITED BY THE BOARD OF DIRECTORS OF THE COMPANY, AND
RETURN  IT  IN  THE  PRE-ADDRESSED  ENVELOPE  PROVIDED  FOR  THAT  PURPOSE.  ANY
STOCKHOLDER  MAY  REVOKE  HIS PROXY AT ANY TIME  BEFORE  THE  MEETING BY WRITTEN
NOTICE TO SUCH EFFECT, ATTN:  CORPORATE SECRETARY,  BY SUBMITTING A SUBSEQUENTLY
DATED   PROXY   OR  BY   ATTENDING   THE   MEETING   AND   VOTING   IN   PERSON.
- --------------------------------------------------------------------------------


<PAGE>

                             PROTEIN DATABASES, INC.
                           775 PARK AVENUE, SUITE 255
                           HUNTINGTON, NEW YORK 11743


                                 PROXY STATEMENT


         This Proxy Statement and accompanying form of proxy are being furnished
in  connection  with the  solicitation  of proxies by the Board of  Directors of
Protein Databases,  Inc., a Delaware corporation (the "Company"), for use at the
Special Meeting of  Stockholders  (the "Meeting") to be held on o, at 10:00 a.m.
at o, or any adjournment thereof.  This Proxy Statement,  the attached Notice of
Special Meeting of Stockholders  and the  accompanying  form of proxy,  together
with the  Company's  Annual  Report on Form  10-KSB  for the  fiscal  year ended
December 31, 1996,  and the  Company's  Quarterly  Report on Form 10-QSB for the
period ended June 30, 1997,  are being mailed on or about o to all  stockholders
of record of the Company at the close of business on o (the "Record Date").

         All proxies duly  executed  and  received  will be voted on all matters
presented  at the Meeting in  accordance  with the  specifications  made in such
proxies. In the absence of specified  instructions,  proxies so received will be
voted (i) FOR the  proposal  to approve  the Plan of  Complete  Liquidation  and
Dissolution,  (ii) FOR the  proposal  to approve the Asset  Purchase  Agreement,
(iii) FOR the  proposal  to change the name of the  Company to "IDP  Liquidating
Corp.",  and (iv) in the  discretion of the proxies named on the proxy card with
respect to any other matters properly brought before the Meeting.

         The Board of Directors is proposing for approval by the stockholders at
the Meeting the Plan of Complete Liquidation and Dissolution of the Company (the
"Plan"),  a copy of which is  attached  as  Exhibit A to this  Proxy  Statement.
Pursuant to the Plan,  the Company will,  subject to paying or providing for all
claims,  obligations,  liabilities and expenses,  be completely  liquidated by a
transfer of the assets of the Company to a liquidating  trust (the  "Liquidating
Trust") for the pro rata benefit of the stockholders of the Company of record on
the date of liquidation or dissolution or, if the Bio-Rad Asset Sale (as defined
below) is not consummated,  either by a transfer of the assets of the Company to
the  Liquidating  Trust  or by a sale of such  assets  (other  than  cash,  cash
equivalents and accounts  receivable) by the Company and cash  distributions  to
stockholders  pro rata by the  Company.  Approval  of the Plan  will  constitute
stockholder approval of the appointment by the Board of Directors of one or more
trustees of the Liquidating Trust (the "Liquidating Trustees") and the execution
of a liquidating trust agreement with the Liquidating Trustees on such terms and
conditions as the Board of Directors shall determine in its absolute discretion.
In addition,  approval of the Plan will constitute  stockholder  approval of any
and all sales of assets of the Company approved by the Board of Directors or, if
applicable,  the  Liquidating  Trustees.  See  "Approval  of  Plan  of  Complete
Liquidation and Dissolution" for a more complete description of the Plan.

         The second  proposal to be acted upon at the Meeting is the approval of
the Asset  Purchase  Agreement,  dated as of July 16, 1997 (the "Asset  Purchase
Agreement"),  by and  between the Company  and  Bio-Rad  Laboratories,  Inc.,  a
Delaware  corporation  ("Bio-Rad").  A copy of the Asset  Purchase  Agreement is
attached as Exhibit B to this Proxy  Statement.  Pursuant to the Asset  Purchase
Agreement,  the  Company  will sell to Bio-Rad  substantially  all of its assets
(other than cash,  cash  equivalents  and accounts  receivable)  (the "Assets"),
including,  among other things,  intellectual property,  computers and software,
inventory,  fixed assets,  property,  plant and  equipment and certain  contract
rights  relating to the Company's  business  (such sale being referred to as the
"Bio-Rad  Asset Sale").  See "Approval of Asset  Purchase  Agreement" for a more
complete description of the Asset Purchase Agreement.

         The third  proposal  being  submitted  by the Board of Directors at the
Meeting  is the  approval  of the  change  of the  name of the  Company  to "IDP
Liquidating Corp." See "Approval of Change of Name."

         Except as  described  in this Proxy  Statement,  the Board of Directors
does not know of any other  matters that may be brought  before the Meeting.  In
the event that any other matter should come before the Meeting, the


<PAGE>

persons named on the proxy cards will have  discretionary  authority to vote all
proxies not marked to the contrary  with  respect to such matters in  accordance
with their best judgment.  A proxy may be revoked at any time before being voted
by written  notice to such  effect  received  by the  Company at the address set
forth above,  attn:  Corporate  Secretary,  by delivery of a subsequently  dated
proxy or by a vote cast in person at the  Meeting.  Presence at the Meeting does
not itself revoke the proxy.

                                     VOTING

         Only holders of record of the Company's  common  stock,  par value $.01
per  share,  of the  Company  (the  "Common  Stock"),  which  is  traded  in the
over-the-counter  market on the OTC  Electronic  Bulletin  Board of the National
Association  of  Securities  Dealers (the "NASD")  under the symbol PDBQ, at the
close of business on the Record Date,  will be entitled to notice of and vote at
the Meeting or any adjournment  thereof. As of the Record Date, 1,459,724 shares
of Common Stock were issued and outstanding.  Each  outstanding  share of Common
Stock entitles the holder thereof to one noncumulative vote.

         A majority of the shares of Common  Stock  outstanding  and entitled to
vote as of the Record Date, or 729,863 shares, must be present at the Meeting in
person  or by proxy  in order to  constitute  a quorum  for the  transaction  of
business.  Abstentions  and broker  non-votes  will be  counted  as present  for
purposes  of  determining  whether  the quorum  requirement  is  satisfied.  The
affirmative  vote of the  holders  of a majority  of the shares of Common  Stock
issued and  outstanding  and  entitled to vote is required  for  approval of the
proposed Plan, the approval of the Asset Purchase  Agreement and the approval of
the proposal to change the Company's name.  Accordingly,  abstentions and broker
non-votes  have  the  effect  of  negative  votes.  Certain  stockholders,   who
collectively  hold 50.2% of the  outstanding  Common Stock,  have indicated that
they intend to vote for  approval of the  proposed  Plan,  approval of the Asset
Purchase  Agreement and approval of the name change proposal.  Accordingly,  the
Plan,  the Asset  Purchase  Agreement  and the name  change  should be  approved
regardless of the vote of any other stockholders of the Company.

         The  Company  will pay the entire  expense of  soliciting  proxies.  In
addition to the use of the mail,  certain  directors,  officers and employees of
the  Company  may  solicit  proxies  in person or by  telephone,  telecopier  or
telegram,  without special  compensation.  The Company may reimburse brokers and
other persons holding stock in their names or in the names of nominees for their
expenses in sending proxy soliciting material to beneficial owners.

         A list  of  stockholders  entitled  to  vote  at the  Meeting  will  be
available for  examination by any  stockholder,  for any purpose  germane to the
Meeting,  during ordinary  business hours,  at the Company's  offices,  775 Park
Avenue, Suite 255,  Huntington,  New York, for a period of ten days prior to the
Meeting and will also be  available  at the  Meeting.  The  Company's  telephone
number is (516) 673-3939.


                                   PROPOSAL 1

            APPROVAL OF PLAN OF COMPLETE LIQUIDATION AND DISSOLUTION

GENERAL

         The Company is proposing a Plan of Complete Liquidation and Dissolution
for approval by the  stockholders  at the Meeting.  The Plan was approved by the
Board of Directors,  subject to stockholder  approval, on [_____]. A copy of the
Plan is attached as Exhibit A to this Proxy Statement.  The material features of
the Plan are summarized  below; this summary does not purport to be complete and
is  subject in all  respects  to the  provisions  of,  and is  qualified  in its
entirety by reference to, the Plan.  STOCKHOLDERS  ARE URGED TO READ THE PLAN IN
ITS ENTIRETY.


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<PAGE>

BACKGROUND

         Since its  incorporation  in 1983, the Company has been in the business
of marketing  innovative image analysis  software and hardware  products for the
worldwide bioresearch,  drug discovery and clinical diagnostic markets. Based on
Long Island, New York, the Company developed user-friendly,  software-integrated
scanner systems for biotechnology and related research in the drug discovery and
diagnostic systems development markets.  These systems were sold to life science
research  laboratories  at  university,   government,  hospital  and  industrial
(biotech and pharmaceutical)  institutions, in the United States and abroad, for
analysis of biological information.

         The Company sold its products in the United States and Canada  directly
to customers and was substantially  dependent upon distributors for the sales of
its products  outside the United States.  The Company sold its products in Japan
under a distribution  agreement with Toyobo Co. Ltd.  ("Toyobo") and in Germany,
Korea,  India,  Taiwan and Israel under agreements with local  distributors.  In
Europe,  the  Middle  East  and  Asia,  the  Company  sold  its  products  under
distribution  agreements with Pharmacia  Biosystems  B.V. and Pharmacia  Biotech
A.B. (collectively,  "Pharmacia").  During fiscal 1996, Toyobo accounted for 41%
of the Company's total revenues. During fiscal 1995, Pharmacia accounted for 29%
and Toyobo accounted for 19% of the Company's total revenues.

         The market for the Company's  products in Europe,  Japan and the Middle
East had been significant to the Company's  financial  business plans,  with the
combined  regions  accounting  for  approximately  65%  of the  Company's  total
revenues in fiscal 1996 and approximately 52% of the Company's total revenues in
fiscal 1995.

         As  a  result  of  the  completion  of  Pharmacia's  software  purchase
requirements  during the third  quarter of fiscal  1995,  the  Company  operated
unprofitably  in the fourth quarter of fiscal 1995 and in each quarter of fiscal
1996.  For the fiscal year ended  December 31, 1996,  the Company had a net loss
from operations of $811,323. On April 19, 1996, Pharmacia,  the most significant
distributor  of the  Company's  products,  elected not to renew its  contract to
distribute  the Company's  products.  In addition,  the  Company's  distribution
agreement with Toyobo,  the exclusive  distributor of the Company's  products in
Japan and the non-exclusive  distributor of the Company's  products in all other
countries in the Far East,  expires on December  31, 1998.  The Company has been
unsuccessful  in  arranging  one  or  more  suitable  alternative   distribution
arrangements for the Company's products.

         In December  1995,  members of management  met to discuss the Company's
relationship  with Pharmacia and the need to locate third parties  interested in
entering into  distribution  agreements for the Company's  products or acquiring
any or all of the assets of the Company.  In order to assist  management and the
Board of Directors in identifying suitable purchasers, MedTech Capital of Boston
("MedTech"),  an investment banking firm, was retained as a financial advisor in
March 1996.  MedTech  approached  approximately 20 companies with respect to the
sale of the Company,  and, in December  1996,  identified  Bio-Rad as a possible
purchaser of certain of the assets of the Company.

         Beginning in April 1997,  the Company began  negotiations  with Bio-Rad
concerning the possible sale of substantially all of the Company's assets (other
than cash,  cash  equivalents and accounts  receivable) to Bio-Rad.  On July 16,
1997,  the Company and Bio-Rad  entered into the Asset  Purchase  Agreement,  in
which  the  Company  agreed  to sell the  Assets  for  $1,000,000  in cash.  The
transaction is subject to the approval of the Company's stockholders and certain
other conditions.  See "Approval of Asset Purchase  Agreement." In contemplation
of the  execution of the Asset  Purchase  Agreement and in order to conserve its
cash resources,  the Company  discontinued most of its operations as of June 30,
1997.  At that  time,  the  Company  ceased  all of its sales and  distribution,
product  development  and  customer  support  activities.  Since June 30,  1997,
substantially all of the Company's activities have related to the negotiation of
the Asset  Purchase  Agreement,  the  collection  of the  Company's  outstanding
accounts  receivable and  preparations for the liquidation and winding up of the
Company.

REASONS FOR THE PLAN; DIRECTORS' RECOMMENDATION

         Declining  Value  of Key  Assets.  The  Company's  key  assets  are its
proprietary  software  programs  and  related  intellectual   property  for  its
integrated   biological  data  scanner  systems.   The  software  code  must  be
continually  revised  and  upgraded to keep pace with  scientific  developments,
hardware improvements and feature refinements


                                        3


<PAGE>

requested  by  customers.  Without  continuing  development  and  upgrades,  the
software would rapidly become obsolete.

         Because of the reversals in the Company's  distribution network, it has
become  uneconomical to support the software  development  necessary to maintain
the competitiveness of the Company's products. In these circumstances, the Board
of Directors believes that the value of the Company's  intellectual property and
its  inventory  of  existing  products  will  decline  over time and may decline
precipitously.  The Board of Directors  therefore believes that the only way for
stockholders to realize value on their  investment in the Company is to monetize
the Company's software assets at their present value,  liquidate the Company and
distribute  to  stockholders  the  cash  value  of the  Company's  assets  after
satisfaction of all outstanding claims, obligations, liabilities and expenses.

         Departure of Key Personnel.  As a result of recent losses,  the lack of
prospects for improved  operating  results and the lack of the Company's ability
to  pay  competitive  compensation,  substantially  all  of  the  Company's  key
personnel  have  recently  left the employ of the  Company.  These  include  the
Company's  chief  executive  officer since August 1, 1997,  the Company's  chief
financial  officer since June 6, 1997, and the Company's two principal  software
programmers.  Other personnel have been terminated because of the Company's need
to conserve its cash  resources,  including  the  Company's  sales and marketing
personnel.  The Board of  Directors  does not  believe  that it is  possible  to
replace these personnel. Without these personnel, the Company cannot function as
a going concern.

         Competition.   The   inability  of  the  Company  to  arrange  for  new
distribution   channels  for  its  products  has   prevented  the  Company  from
effectively  competing  against  manufacturers  of  similar  products  who  have
substantially  greater financial,  development and marketing  resources than the
Company.  These competitors include Bio-Rad,  Molecular  Dynamics,  Inc, and Bio
Image Corp., each of which sells a turnkey image analysis  instrument capable of
scanning and analyzing one and two  dimensional DNA gels similar to the products
of the  Company.  The  Board  of  Directors  does  not  foresee  any  near  term
improvement in the competitive position of the Company.

         Market Price of Common Stock. The Board of Directors  believes that the
Common  Stock has been  trading at prices  that are less than the value that the
Company's  stockholders  would receive upon a dissolution of the Company and the
distribution to  stockholders  of the value of its net assets.  The Common Stock
trades in the  over-the-counter  market on the OTC Electronic  Bulletin Board of
the NASD.  The average of the low bid and high ask price for the Common Stock on
the last  trading day prior to the  announcement  of the  execution of the Asset
Purchase Agreement on July 21, 1997, was $0.17. The average of the daily average
low bid and high ask price for the  Common  Stock  during  the 20  trading  days
preceding  the first public  announcement  on April 8, 1997 that the Company was
engaged in negotiations concerning the possible sale of its assets was $0.14.

         The Board of Directors has estimated that the net assets of the Company
available  for  distribution  to  stockholders  following a  liquidation,  after
deduction  of  cash  amounts  for  payment  of  all  expenses  and  other  known
liabilities  and possible  contingent  obligations,  as based upon the Company's
unaudited balance sheet as of June 30, 1997, will be approximately $[645,000] or
$[0.33]  per  share.  See  "Unaudited  Pro  Forma  Statement  of Net  Assets  in
Liquidation."

         Comparing the recent historical trading prices of the Common Stock with
the estimated net amount available for distribution on liquidation, the Board of
Directors  believes that  dissolution of the Company presents an opportunity for
stockholders  to maximize the value of their  investment  in the Company at this
time. The Board of Directors also believes the estimated  liquidation  value per
share of Common  Stock is likely to exceed  the  probable  trading  value of the
Common  Stock  in  the  foreseeable  future  absent  the  proposed  liquidation.
Furthermore,  the Board of  Directors  believes  there is currently no effective
market for the Common Stock and such  effective  market has been absent for some
time.

         Stockholders should be aware, however, that the actual amount available
for distribution to stockholders upon a dissolution of the Company could be less
than or  greater  than  the  amount  estimated  by the  Board of  Directors.  In
particular,   the  Board  of  Directors  in  its   estimation  has  allowed  for
contingencies that includes possible


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<PAGE>

future claims against the Company or its assets. However, the Board of Directors
cannot  predict  with any  degree of  certainty  the  amount  of future  claims,
including any claims arising under the Asset Purchase Agreement, that may reduce
the amount  available  for  distribution  to  stockholders.  Also,  the Board of
Directors'  estimation  does not take  account  of the delay in the  payment  to
stockholders  of amounts  available for  distribution  between the time that the
Plan is approved by stockholders and the time or times that such distribution is
actually made. Such delay is anticipated to result, among other things, from the
necessity of paying,  settling or otherwise  making  allowance for the Company's
liabilities,  the holdback of a portion of the purchase price payable by Bio-Rad
under the Asset Purchase Agreement (see "Approval of Asset Purchase  Agreement")
and  reserves  that  may be set  aside  for a  period  of  time  in  respect  of
contingencies.

         Alternatives.  The Board of Directors  considered  alternatives  to the
Plan,   including   continuing   the  Company's   operations  and  pursuing  new
distribution  arrangements  and raising new  capital.  Because of the  Company's
business and financial  circumstances,  however,  the Board of Directors did not
consider  any of these  alternatives  to be viable.  The Company has been unable
thus  far  to  identify  and  consummate  new   distribution   arrangements   on
economically  reasonable  terms.  It is doubtful that the Company could do so in
the future  within a time frame that would  allow the  Company to  preserve  the
existing value of its assets and not exhaust the Company's cash resources.

         Tax Treatment.  In adopting the Plan, the Board of Directors recognized
that  stockholders,  depending on the tax basis in their shares, may be required
to recognize gain for tax purposes upon receipt of  distributions in liquidation
and/or upon the  transfer of the assets to a  liquidating  trust.  Distributions
pursuant to a plan of complete  liquidation and  dissolution,  however,  are not
taxable to a stockholder  for federal  income tax purposes to the extent of such
stockholder's  tax basis in his or her shares.  In addition,  the gain or loss a
stockholder  recognizes  with  respect to  distributions  pursuant  to a plan of
complete  liquidation  and  dissolution is generally  treated as capital gain or
loss  (assuming  shares of Common Stock are capital  assets in the hands of such
stockholder).  The Company will generally recognize gain or loss on sales of its
assets  pursuant  to the  Plan,  or  upon  any  distribution  of  assets  to the
stockholders  and/or  a  liquidating  trust  pursuant  to  a  plan  of  complete
liquidation and dissolution. See "Certain Federal Income Tax Consequences."

         Absence of Financial  Advisor.  The Board of Directors did not, and did
not consider it advisable,  to engage an independent financial advisor to render
a fairness  opinion  with  respect to the Plan.  The  Company's  assets  consist
substantially in their entirety of cash, cash equivalents,  accounts  receivable
and the  assets  that  will be sold to Bio- Rad in  accordance  with  the  Asset
Purchase  Agreement.  The value of these  assets is  readily  determinable.  The
purchase price for the Assets to be sold under the Asset Purchase  Agreement was
negotiated at arm's-length  between  Bio-Rad and the Company.  The other factors
considered by the Board of Directors, such as the need for active development to
maintain  the  value  of the  Company's  assets,  the  state  of  the  Company's
distribution  arrangements,  the loss of personnel and the Company's competitive
environment,  were within the  competence of the Board of Directors and not of a
type typically addressed in fairness opinions. Also, given the Company's limited
resources,  the  Board  of  Directors  did not  believe  that it was in the best
interests of stockholders to incur the cost of a fairness opinion.

         BASED UPON THE FOREGOING, THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS
THAT THE STOCKHOLDERS VOTE "FOR" APPROVAL OF THE PLAN.

         THIS PROXY  STATEMENT  CONTAINS  CERTAIN  FORWARD  LOOKING  STATEMENTS,
INCLUDING STATEMENTS, BASED ON THE BOARD OF DIRECTORS' ESTIMATE OF THE VALUES OF
THE  COMPANY'S  NET  ASSETS,  THAT THE  BOARD  OF  DIRECTORS  BELIEVES  THAT THE
LIQUIDATION  VALUE PER SHARE OF COMMON STOCK IN THE HANDS OF THE STOCKHOLDERS IS
LIKELY TO EXCEED ITS PROBABLE TRADING VALUE IN THE FORESEEABLE FUTURE ABSENT THE
PROPOSED LIQUIDATION.  THE METHODS USED BY THE BOARD OF DIRECTORS AND MANAGEMENT
IN  ESTIMATING  THE VALUE OF THE  COMPANY'S NET ASSETS DO NOT RESULT IN AN EXACT
DETERMINATION  OF  VALUE  NOR  ARE  THEY  INTENDED  TO  INDICATE  THE  AMOUNT  A
STOCKHOLDER  WILL RECEIVE IN  LIQUIDATION.  THE BOARD OF  DIRECTORS'  ASSESSMENT
ASSUMES THAT THE BIO-RAD ASSET SALE WILL BE CONSUMMATED IN


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<PAGE>

ACCORDANCE  WITH ITS TERMS AND THAT THE ESTIMATES OF THE  COMPANY'S  LIABILITIES
AND CONTINGENT  LIABILITIES IS ACCURATE.  THE BIO-RAD ASSET SALE IS SUBJECT TO A
NUMBER OF CONDITIONS AND THERE CAN BE NO ASSURANCE THAT ALL SUCH CONDITIONS WILL
BE SATISFIED, OR, IF THEY ARE NOT SATISFIED, THAT THE CONDITIONS WILL BE WAIVED.
THE ESTIMATES OF THE COMPANY'S LIABILITIES ARE SUBJECT TO NUMEROUS UNCERTAINTIES
BEYOND THE  COMPANY'S  CONTROL.  NO ASSURANCE CAN BE GIVEN THAT THE AMOUNT TO BE
RECEIVED  IN  LIQUIDATION  WILL EQUAL OR EXCEED THE PRICE OR PRICES AT WHICH THE
COMMON  STOCK  HAS  GENERALLY  TRADED  OR IS  EXPECTED  TO TRADE IN THE  FUTURE.
STOCKHOLDERS  WHO DISAGREE WITH THE BOARD OF DIRECTORS'  DETERMINATION  THAT THE
VALUE OF THE NET ASSETS AS DISTRIBUTED TO THE STOCKHOLDERS  EXCEEDS THE PRICE AT
WHICH THE COMMON STOCK HAS TRADED SHOULD CONSIDER VOTING  "AGAINST"  APPROVAL OF
THE PLAN.

         UNDER  DELAWARE  LAW,  IN THE  EVENT  THE  COMPANY  FAILS TO  CREATE AN
ADEQUATE  CONTINGENCY  RESERVE FOR PAYMENT OF ITS EXPENSES AND  LIABILITIES,  OR
SHOULD SUCH CONTINGENCY  RESERVE (AND THE ASSETS HELD BY ANY LIQUIDATING  TRUST)
BE  EXCEEDED  BY THE  AMOUNT  ULTIMATELY  FOUND TO BE  PAYABLE IN RESPECT OF THE
COMPANY'S  EXPENSES AND LIABILITIES,  EACH STOCKHOLDER  COULD BE HELD LIABLE FOR
THE PAYMENT TO THE COMPANY'S  CREDITORS OF SUCH  STOCKHOLDER'S PRO RATA SHARE OF
SUCH EXCESS,  LIMITED TO THE AMOUNTS  THERETOFORE  RECEIVED BY SUCH  STOCKHOLDER
FROM THE COMPANY (AND FROM ANY LIQUIDATING TRUST).  ACCORDINGLY, IN SUCH EVENT A
STOCKHOLDER  COULD BE REQUIRED TO RETURN ALL  DISTRIBUTIONS  PREVIOUSLY MADE AND
THUS WOULD RECEIVE  NOTHING FROM THE COMPANY AS A RESULT OF THE PLAN.  MOREOVER,
IN THE EVENT A STOCKHOLDER  HAS PAID TAXES ON AMOUNTS  THERETOFORE  RECEIVED,  A
REPAYMENT  OF ALL OR A PORTION OF SUCH AMOUNT  COULD  RESULT IN A  SITUATION  IN
WHICH A  STOCKHOLDER  MAY INCUR A NET TAX COST IF THE  REPAYMENT  OF THE  AMOUNT
DISTRIBUTED  DOES NOT CAUSE A REDUCTION  IN TAXES  PAYABLE IN AN AMOUNT EQUAL TO
THE  AMOUNT OF THE  TAXES  PAID ON  AMOUNTS  PREVIOUSLY  DISTRIBUTED.  WHILE THE
POSSIBILITY OF THE OCCURRENCES SET FORTH ABOVE CANNOT TOTALLY BE EXCLUDED, AFTER
A REVIEW OF ITS ASSETS AND LIABILITIES THE COMPANY BELIEVES THAT THE CONTINGENCY
RESERVE  WILL BE ADEQUATE  AND THAT A RETURN OF AMOUNTS  PREVIOUSLY  DISTRIBUTED
WILL NOT BE REQUIRED. SEE "CONTINGENCY RESERVE."

         THE  ANTICIPATED  TAX TREATMENT OF THE PLAN IS SET FORTH UNDER "CERTAIN
FEDERAL INCOME TAX CONSEQUENCES." NO RULING HAS BEEN REQUESTED FROM THE INTERNAL
REVENUE SERVICE (THE "IRS") WITH RESPECT TO THE ANTICIPATED TAX TREATMENT OF THE
PLAN,  AND THE COMPANY  WILL NOT SEEK AN OPINION OF COUNSEL  WITH RESPECT TO THE
ANTICIPATED  TAX  TREATMENT.  THE  FAILURE TO OBTAIN A RULING FROM THE IRS OR AN
OPINION OF COUNSEL  RESULTS IN LESS CERTAINTY THAT THE ANTICIPATED TAX TREATMENT
SUMMARIZED  THEREIN WILL BE  OBTAINED.  IF ANY OF THE  CONCLUSIONS  STATED UNDER
"CERTAIN  FEDERAL INCOME TAX  CONSEQUENCES"  PROVES TO BE INCORRECT,  THE RESULT
COULD BE INCREASED  TAXATION AT THE CORPORATE  AND/OR  STOCKHOLDER  LEVEL,  THUS
REDUCING THE BENEFIT TO THE STOCKHOLDERS AND THE COMPANY FROM THE LIQUIDATION.

         If the Plan is not approved by the stockholders, the Board of Directors
will explore the alternatives then available for the future of the Company.

PRINCIPAL PROVISIONS OF THE PLAN

         Transfers  to the  Liquidating  Trust.  If the  Bio-Rad  Asset  Sale is
consummated  (see  "Approval of Asset  Purchase  Agreement"),  then,  as soon as
practicable   following   the  closing   thereof,   the  Company  will  transfer
substantially all of the assets of the Company,  including the proceeds received
at the closing of the Bio-Rad Asset


                                        6


<PAGE>

Sale,  after deduction of cash amounts for payment of the Company's  outstanding
liabilities  and  obligations  and for the funding of the Company's  expenses in
liquidation,   to  the  Liquidating  Trust.  Substantially  all  of  the  assets
transferred to the  Liquidating  Trust will consist of cash,  cash  equivalents,
accounts  receivable  and the right of the  Company  to receive a portion of the
purchase price that will be placed in escrow under the Asset Purchase  Agreement
(the "Holdback  Amount").  Any assets,  other than cash,  cash  equivalents  and
receivables  transferred to the Liquidating  Trust will be sold for cash on such
terms and at such times as approved by the Liquidating Trustees. At such time or
from time to time as the Company  determines  that any amounts set aside for the
payment  of the  Company's  outstanding  liabilities  and  obligations  and  its
expenses in liquidation are not needed for those purposes,  such amounts will be
transferred to the Liquidating Trust.

         If the Bio-Rad  Asset Sale is not  consummated  and the Asset  Purchase
Agreement is terminated,  the Board of Directors will determine whether and when
to transfer the Company's assets,  including the assets that had been subject to
the Asset Purchase Agreement,  to the Liquidating Trust. Such transfer may occur
at any time or from time to time  following  termination  of the Asset  Purchase
Agreement.   Any  assets,   other  than  cash,  cash  equivalents  and  accounts
receivable,  that are not transferred to the  Liquidating  Trust will be sold at
such times and on such terms as the Board of  Directors  determines.  Any of the
Company's assets that are not sold or distributed prior to the first anniversary
of the  approval  of the  Plan  by the  Company's  stockholders  (including  any
Contingency Reserve) must be transferred to the Liquidating Trust.

         Distributions.   The  Liquidating  Trust  will  make  distributions  of
Available Cash pro rata to the Company's  stockholders at such times and in such
amounts as shall be determined by the  Liquidating  Trustees.  "Available  Cash"
means the cash held by the Liquidating Trust after deduction for the expenses of
the operation of the  Liquidating  Trust and a contingency  reserve in an amount
determined  by  the  Liquidating  Trustees  to  be  sufficient  to  satisfy  any
liabilities,  expenses  and  obligations  of the Company not  otherwise  paid or
provided for and that could be recovered  against the stockholders to the extent
of the amounts  distributed to them by the Company or the Liquidating Trust (the
"Contingency   Reserve").   The  Company   cannot  predict  the  timing  of  the
distributions for the Liquidating Trust. It is the intention that Available Cash
will be  distributed to  stockholders  of the Company as promptly as practicable
following  the  Final  Record  Date  (as  defined   below).   Nevertheless,   no
distributions  will be made until  such time as the  Liquidating  Trustees  have
determined the amount of the Contingency Reserve, which is not expected to occur
before [January 1, 1998].

         If the  Bio-Rad  Asset Sale is not  consummated  and some or all of the
Company's assets are not transferred to the Liquidating  Trust, the net proceeds
of the  sale of any  such  assets,  together  with any  other  cash  held by the
Company,  will be  distributed  pro rata to  stockholders,  after  deduction for
expenses  and a  Contingency  Reserve,  at such times and in such amounts as the
Board of Directors shall determine. The Board of Directors may also determine to
transfer  any  such  proceeds  to the  Liquidating  Trust  for  distribution  to
stockholders.

         The Board of Directors  believes  that the Company and the  Liquidating
Trust will have sufficient  assets to pay the current and future  obligations of
the Company and the Liquidating Trust and to make distributions to stockholders,
but there can be no assurance to that  effect.  The amount of the  distributions
will  depend on a number of  factors,  including,  if the closing of the Bio-Rad
Asset Sale occurs,  whether any or all of the Holdback  Amount will be paid over
to the Company  following the conclusion of the escrow period in accordance with
the terms of the Asset  Purchase  Agreement,  and if the  closing of the Bio-Rad
Asset Sale does not occur,  the amount of the proceeds from the sale, if any, of
the Company's  property and assets.  The amount of the  distributions  will also
depend on the accounts payable and other  liabilities of the Company existing on
the date of the approval of the Plan (including  severance payments and payments
to option holders; see "Certain  Compensation  Arrangements" and "Stock Options"
below),  the expenses of operation of the Company and the Liquidating Trust that
accrue  following  approval of the Plan and the amount of any claims that may be
asserted against the Company or the Liquidating Trust. The expenses of operation
of the Company and the  Liquidating  Trust will  include  professional  fees and
other expenses of liquidation and could be substantial.

         The Company does not anticipate that property, other than cash, will be
distributed to stockholders by the Liquidating Trust or the Company.


                                        7


<PAGE>

         Terms  of  the  Liquidating   Trust.  If  the  Bio-Rad  Asset  Sale  is
consummated,  the  Company  will  transfer to the  Liquidating  Trust as soon as
practicable  thereafter  all of the  assets  of the  Company,  other  than  cash
required to pay the  outstanding  liabilities and obligations of the Company and
the expenses  anticipated to be incurred in connection  with the  liquidation of
the  Company.  If the  Bio-Rad  Asset  Sale is not  consummated,  the  Board  of
Directors will determine  whether and when to transfer  assets of the Company to
the Liquidating Trust; provided that if all of the Company's assets are not sold
or distributed prior to the first anniversary of the approval of the Plan by the
Company's  stockholders,  the Company must transfer all the remaining  assets of
the Company (including the Contingency Reserve) to the Liquidating Trust.

         The purpose of the Liquidating  Trust will be to liquidate any non-cash
assets  held  by the  Liquidating  Trust  and  distribute  the  proceeds  of all
Available Cash to the Company's stockholders of record on the Final Record Date.
The Liquidating Trust will be required to pay the expenses of its operations and
all  unsatisfied  expenses,  liabilities  and  obligations of the Company.  Such
expenses,  liabilities  and  obligations  will  be  paid  initially  out  of the
Contingency Reserve, but if the Contingency Reserve is exhausted, such expenses,
liabilities  and  obligations  will be paid out of the other  assets held by the
Liquidating Trust.

         Each  stockholder on the Final Record Date will receive an interest (an
"Interest") in the Liquidating Trust pro rata to its interest in the outstanding
Common Stock on that date. All distributions  from the Liquidating Trust will be
made pro  rata in  accordance  with the  Interests.  The  Interests  will not be
transferable  except by  operation of law or upon death.  Because the  Interests
will not be transferable,  it is anticipated that the Liquidating Trust will not
be  required  to  comply  with  the  periodic   reporting  and  proxy  statement
requirements  of the Securities  Exchange Act of 1934, as amended (the "Exchange
Act"). The Liquidating Trustees will, however, maintain books and records of the
Liquidating  Trust,  which  will be  available  for  inspection  by  holders  of
Interests, in accordance with law.

         The Plan  authorizes  the Board of  Directors  to  appoint  one or more
individuals  or  entities  to act as  Liquidating  Trustee  or  Trustees  of the
Liquidating  Trust and to cause the  Company to enter into a  liquidating  trust
agreement  with such trustee or trustees on such terms and  conditions as may be
approved  by the  Board  of  Directors.  It is  anticipated  that  the  Board of
Directors will select such trustee or trustees on the basis of the experience of
such  individual  or  entity  in  administering  and  disposing  of  assets  and
discharging  liabilities of the kind to be held by the Liquidating Trust and the
ability  of such  individual  or  entity  to  serve  the best  interests  of the
Company's stockholders. Approval of the Plan will constitute the approval by the
Company's   stockholders  of  any  such  appointment  and  the  execution  of  a
liquidating trust agreement with the Liquidating Trustee.

         As  stockholders   will  be  deemed  to  have  received  a  liquidating
distribution  equal to  their  pro rata  share  of the  value of the net  assets
transferred  to  the  Liquidating   Trust  (see  "Certain   Federal  Income  Tax
Consequences"),  the transfer to the Liquidating Trust of assets could result in
immediate tax liability to the holders of Interests  without their readily being
able to realize the value of such Interests to pay such taxes or otherwise.

         Contingency  Reserve.  Under Delaware law, the Company is required,  in
connection  with its  dissolution,  to pay or provide  for payment of all of its
expenses,  liabilities  and  obligations.  These include known  liabilities  and
obligations of the Company accrued through the date of the approval of the Plan,
expenses  to be  incurred  by the  Company  following  approval  of the  Plan in
connection  with the winding-up and  dissolution of the Company,  expenses to be
incurred in connection with the operations of the Liquidating Trust, claims that
have been asserted against the Company but that have not been settled or reduced
to judgment  and claims that have not yet been  asserted  but may be asserted in
the future.  Known  liabilities and obligations of the Company include  accounts
payable,  professional  fees, salary and severance payments to certain employees
and  cash-out  payments in respect of certain  outstanding  stock  options.  See
"Certain Compensation  Arrangements" and "Stock Options" below. Claims that have
been or may be asserted may include,  among others, claims by certain terminated
distributors and claims that may arise under the Asset Purchase  Agreement.  See
"Certain Claims" below and "Approval of Asset Purchase Agreement."

         Following approval of the Plan by stockholders, the Company will pay or
set aside an amount that it believes to be adequate  for the payment of all then
known liabilities and obligations of the Company and the


                                        8


<PAGE>

expenses  expected to be incurred by the Company in connection  with its wind-up
and  dissolution  (the  "Expense  Reserve").   If  the  Bio-Rad  Asset  Sale  is
consummated,  all  other  assets  of the  Company  will  be  transferred  to the
Liquidating Trust,  which will set aside from such assets a Contingency  Reserve
to fund the anticipated  operational expenses of the Liquidating Trust and other
possible  claims against the Company or the  Liquidating  Trust.  If the Bio-Rad
Asset Sale is not consummated and substantially all of the assets of the Company
are not  transferred  to the  Liquidating  Trust,  the Board of Directors  might
determine to cause the Company to establish the Contingency Reserve.

         The Company is currently  unable to estimate with precision the amounts
of the Expense  Reserve and the Contingency  Reserve,  and the amounts set forth
above  under  "Reasons  for  the  Plan;   Directors   Recommendation"   are  for
illustrative  purposes  only.  These  reserves will  initially be based upon the
assessment  and  estimates  of the Board of  Directors  and/or  the  Liquidating
Trustees,   as  the  case  may  be,  of  the  Company's  known  liabilities  and
obligations,  future operating  expenses and possible claims.  Subsequent to the
establishment of the Contingency  Reserve, the Liquidating Trustees or the Board
of  Directors,  as the case may be, may  increase  or decrease  the  Contingency
Reserve  based on their then current  estimate and  assessment  of the operating
expenses of the Liquidating Trust and/or the Company,  the probable value of any
known claims against the Company or the Liquidating Trust and the possibility of
any then unknown  claims being asserted  against the Company or the  Liquidating
Trust. Any increase in the amount of the Contingency Reserve will be funded from
the cash assets of the Liquidating Trust or the Company, as the case may be, and
will reduce the amount available for distribution to stockholders. The amount of
any decrease in the Contingency  Reserve will increase the assets  available for
distribution to stockholders. After all expenses, liabilities and obligations of
the Company and the  Liquidating  Trust have been satisfied and the  Liquidating
Trustees  or the Board of  Directors,  as the case may be,  determines  that any
future claims against the Company or the  Liquidating  Trust are not probable of
occurrence,  any remaining funds in the Contingency  Reserve will be distributed
pro rata to holders of Interests in the Liquidating Trust.

         In the event the  Liquidating  Trust or the Company  fails to create an
adequate   Contingency   Reserve  for  payment  of  expenses,   liabilities  and
obligations,  or should  such  Contingency  Reserve  and the assets  held by the
Liquidating  Trust be exceeded by the amount ultimately found payable in respect
of the Company's expenses,  liabilities and obligations,  each stockholder could
be held liable for the payment to creditors of such stockholder's pro rata share
of such excess,  limited to the amounts theretofore received by such stockholder
from the Liquidating Trust or the Company. In addition,  if a court holds at any
time that the  Liquidating  Trust or the  Company  has  failed to make  adequate
provision for expenses, liabilities and obligations, or if the amount ultimately
required to be paid in respect  thereof  exceeds the amount  available  from the
Contingency  Reserve and the assets of the Liquidating  Trust, a creditor of the
Company could seek an injunction  against the making of distributions  under the
Plan on the ground that the amounts to be distributed  are needed to provide for
the payment of the Company's  expenses,  liabilities and  obligations.  Any such
action could delay or substantially  diminish the cash  distributions to be made
to stockholders under the Plan.

         Disposition of Certain Assets. The Plan gives to the Board of Directors
of the Company the power to sell all the assets of the Company.  The Company has
entered into the Asset Purchase  Agreement with Bio-Rad,  providing for the sale
to Bio-Rad of  substantially  all of the assets of the Company  other than cash,
cash equivalents and accounts  receivable.  The Company anticipates that, if the
Asset  Purchase  Agreement is approved by  stockholders,  the Bio-Rad Asset Sale
will be consummated in accordance with its terms. However, if for any reason the
Asset Purchase Agreement is terminated or abandoned,  the Assets may be retained
by the Company and sold on such terms and in such  manner as  determined  by the
Board of  Directors  or  transferred  to the  Liquidating  Trust and sold by the
Liquidating  Trustees.  The prices at which the Company or the Liquidating Trust
may be able to sell the Assets  will  depend on  factors  that may be beyond the
control of the  Company or the  Liquidating  Trust and may not be as high as the
purchase  price  payable by Bio-Rad  under the Asset  Purchase  Agreement or the
prices that could be obtained if the Company were not in  liquidation.  Approval
of the Plan will constitute  approval of any such sales.  See "Approval of Asset
Purchase Agreement" for a discussion of the Bio-Rad Asset Sale.

         Certain  Compensation  Arrangements.  Pursuant to the Plan, the Company
may, in the absolute discretion of the Board of Directors,  pay to the Company's
present or former officers, directors, employees, agents and representatives, or
any of  them,  compensation  or  additional  compensation  above  their  regular
compensation, in


                                        9


<PAGE>

money or other property,  in recognition of the  extraordinary  efforts they, or
any of them,  will be  required to  undertake,  or  actually  undertake  or have
undertaken,  in connection with the  implementation of the Plan.  Stephen Blose,
the former  president  and chief  executive  officer of the Company and a former
director,  resigned his positions with the Company  effective August 1, 1997 and
is now employed by Bio-Rad.  Alan Chodosh, the former chief financial officer of
the Company,  resigned his position with the Company effective June 6, 1997. Mr.
Blose was instrumental in negotiating the Asset Purchase Agreement and in making
the business and operational  arrangements in contemplation of the winding-up of
the Company.  Mr.  Chodosh has continued to assist the Company in fulfilling its
reporting  obligations  under the Exchange Act.  Both Mr. Blose and Mr.  Chodosh
have been  available on a consulting  basis to assist in the  settlement  of the
Company's  outstanding  obligations  and the  winding-up  of its affairs.  It is
contemplated  that if the  Bio-Rad  Asset Sale is  consummated,  Mr.  Blose will
receive a success  fee in the  amount of up to  $35,000,  and Mr.  Chodosh  will
receive a fee of up to $10,000. In addition,  the Company has agreed to pay John
Randall,  a former  senior  software  developer of the  Company,  a fee of up to
$35,000  following  consummation  of  the  Bio-Rad  Asset  Sale.  Mr.  Randall's
employment with Bio-Rad is a condition to Bio-Rad's obligation to consummate the
Asset Purchase Agreement. Approval of the Plan will also constitute the approval
by the Company's stockholders of the payment of all such compensation.

         Stock Options. As of June 30, 1997, the Company had outstanding options
to acquire 555,000 shares of Common Stock at exercises prices of between $0.1193
and  $0.75 per  share.  The  options  are held by  certain  current  and  former
directors, officers and employees of the Company, including the following former
directors and executive officers:


<TABLE>
<CAPTION>
            NAME                       EXERCISE PRICE                 EXPIRATION DATE                 NO. OF SHARES

<S>                                         <C>                       <C>                                   <C>
Stephen H. Blose                            $0.1193                   14-August-02                          65,000
                                               0.25                      15-Jan-03                          67,500
                                                                                                            ------
                                                                                                           132,500

Jon D. Randall                               0.1193                      14-Aug-02                          45,000
                                               0.25                      15-Jan-03                          67,000
                                                                                                            ------
                                                                                                           112,500

Alan P. Chodosh                              0.1193                      14-Aug-02                          45,000
                                               0.25                      15-Jan-03                          67,500
                                                                                                            ------
                                                                                                           112,500

Paul J. Collins                              0.1193                      14-Aug-02                          45,000
                                               0.25                      15-Jan-03                          67,500
                                                                                                            ------
                                                                                                           112,500

Total Stock Options                                                                                        470,000
                                                                                                           =======

</TABLE>


The Plan provides  that the options of the above former  directors and executive
officers (the  "Options")  outstanding  on the Final Record Date will be settled
for a cash payment in the amount of the positive difference, if any, between the
aggregate  liquidation  amount per share of Common Stock and the exercise prices
of such Options. The cash-out payment of the Options is expected to occur at the
time of the final  liquidating  distribution to stockholders.  The Options to be
cashed-out include options of certain former employees to acquire 470,000 shares
of Common Stock,  which by the terms of the Options would  otherwise have lapsed
following  the  employees'  termination  of  employment.  The Board of Directors
determined to cash-out these Options in order to honor certain  commitments made
to the holders thereof in order to induce them to perform  certain  services for
the Company that were necessary to facilitate the  liquidation and winding-up of
the Company.  Approval of the Plan will  constitute the approval of the cash-out
of the Options.

         Closing of Transfer Books. The Company will close its transfer books on
the earlier date (the "Final Record Date") to occur of (i) the close of business
on the date fixed by the directors for the final transfer or


                                       10


<PAGE>

distribution  by the  Company  of its  assets  to the  Liquidating  Trust or the
stockholders,  as the case may be, and (ii) the date on which the dissolution of
the Company becomes effective under Delaware law.  Thereafter,  the Company will
not  record any  further  transfers  of Common  Stock and will not issue any new
stock certificates,  other than replacement certificates. It is anticipated that
no further  trading of the  Company's  shares will occur after the Final  Record
Date. All liquidating distributions from the Liquidating Trust or the Company on
or after the Final Record Date will be made to  stockholders  pro rata according
to their holdings of Common Stock as of the Final Record Date. Subsequent to the
Final Record Date,  the Company may, at its election,  require  stockholders  to
surrender  certificates  representing  their  shares of Common Stock in order to
receive distributions.  Stockholders should not forward their stock certificates
before  receiving  instructions to do so. If surrender of stock  certificates is
required,  all  distributions  otherwise payable by the Liquidating Trust or the
Company,   if  any,  to  stockholders  who  have  not  surrendered  their  stock
certificates may be held in trust for such stockholders, without interest, until
the  surrender of their  certificates  (subject to escheat  pursuant to the laws
relating to unclaimed property).  If a stockholder's  certificate evidencing the
Common Stock has been lost, stolen or destroyed, the stockholder may be required
to  furnish  the  Company  with  satisfactory  evidence  of the  loss,  theft or
destruction  thereof,  together  with  surety  bond  or  other  indemnity,  as a
condition to the receipt of any distribution.

         Indemnification.  Pursuant to the Plan,  the Company will indemnify its
officers, directors,  employees, agents and representatives for actions taken in
connection  with the Plan and the winding up of the affairs of the Company.  The
Company's  obligation  to indemnify  such  persons may also be satisfied  out of
assets  of  the  Liquidating  Trust  established.  The  Liquidating  Trust  will
similarly be authorized to indemnify the Liquidating Trustees and any employees,
agents  or  representatives  of the  Liquidating  Trust  for  actions  taken  in
connection with the operations of the Liquidating  Trust.  Any claims arising in
respect  of such  indemnification  will be  satisfied  out of the  assets of the
Liquidating Trust.

         Dissolution  of the  Company.  At such time as all of the assets of the
Company,   other  than  the  Expense  Reserve,  have  been  distributed  to  the
Liquidating Trust or to stockholders, a Certificate of Dissolution will be filed
with the State of  Delaware  dissolving  the  Company.  The  dissolution  of the
Company will become  effective,  in accordance with Delaware law upon the filing
of the  Certificate of  Dissolution  with the Secretary of State of the State of
Delaware  or upon such  later date as may be  specified  in the  Certificate  of
Dissolution.  Under  Delaware  law, the Company will continue to exist for three
years after the dissolution  becomes  effective or for such longer period as the
Delaware  Court of Chancery shall direct,  for the purposes of  prosecuting  and
defending suits,  whether civil,  criminal or administrative,  by or against it,
and enabling the Company gradually to settle and close its business,  to dispose
of and convey its property,  to discharge its  liabilities  and to distribute to
its stockholders any remaining assets, but not for the purpose of continuing the
business for which the Company was  organized.  Except for the  requirements  of
Delaware law and the Exchange Act in connection with the Meeting of stockholders
to vote on the Plan, and except for the filing of the Certificate of Dissolution
and any required  filings  under  federal or state tax laws, no federal or state
regulatory   requirements  must  be  complied  with  or  approvals  obtained  in
connection with the dissolution.

AMENDMENT AND ABANDONMENT

         Under the Plan, if the Board of Directors  determines that  liquidation
and   dissolution  are  not  in  the  best  interests  of  the  Company  or  its
stockholders,  the Board of Directors may direct that the Plan be abandoned. The
Company  nevertheless  may cause the  performance,  without further  stockholder
approval,  of any contract for the sale of assets theretofore executed which the
Board of Directors deems to be in the best interests of the Company (except that
the  Company  shall  not  consummate  the  Asset  Purchase   Agreement   without
stockholder  approval thereof).  The Board of Directors also may amend or modify
the Plan if it determines such action to be in the best interests of the Company
or its stockholders, without the necessity of further stockholder approval.

CONDUCT OF THE COMPANY FOLLOWING ADOPTION OF THE PLAN

         The Company effectively ceased business operations as of June 30, 1997,
except  for the  collection  of  receivables,  the  negotiation,  execution  and
performance of its obligations under the Asset Purchase Agreement and activities
in connection  with the  anticipated  winding up of the Company.  Other than one
administrative manager,


                                       11


<PAGE>

all  employees  of the  Company  have  resigned  or been  terminated.  Following
approval of the Plan, the Company  expects to continue the process of winding-up
its affairs, including,  subject to stockholder approval and the satisfaction of
certain other conditions,  the consummation of the Bio-Rad Asset Sale,  transfer
of the Company's  assets to the Liquidating  Trust,  payment of its obligations,
liabilities and expenses and compliance with law. In the event the Bio-Rad Asset
Sale is not  consummated,  the  Company  will seek to  liquidate  the  Assets or
transfer the Assets to the Liquidating Trust.

CERTAIN CLAIMS

         Certain of the Company's  former  distributors who have received notice
of the Company's  intended  winding-up  have either claimed that such winding-up
would be in  violation  of their  contractual  rights  with the  Company or have
otherwise  made claims  against the  Company.  The Company has denied  liability
under such claims and is in the process of attempting to resolve the claims on a
consensual  basis.  The Company  cannot predict at this time whether such claims
will be  resolved,  the cost to the Company of any such  resolution  or, if such
claims were litigated,  what the outcome and cost of such  litigation  would be.
The Company anticipates that the amount of the Contingency Reserve will reflect,
in part, the possible liability of the Company under such claims. See "Unaudited
Pro Forma Statement of Net Assets in Liquidation."

LISTING AND TRADING OF THE COMMON STOCK

         The Company  currently intends to close its transfer books on the Final
Record Date and at such time cease  recording  stock transfers and issuing stock
certificates (other than replacement certificates).  Accordingly, it is expected
that  trading in the shares  will  cease on or after such date.  If the  Bio-Rad
Asset Sale is  consummated,  it is  anticipated  that the Final Record Date will
occur shortly  thereafter at or about the time that all of the Company's assets,
other than the Expense  Reserve,  are transferred to the  Liquidating  Trust. In
such case, all liquidating  distributions  to  stockholders  will be made by the
Liquidating  Trust. If the Bio-Rad Asset Sale is not  consummated,  the Board of
Directors may determine not to transfer assets to the  Liquidating  Trust and to
make liquidating  distributions to stockholders from the Company.  In such case,
the Common Stock will continue to trade,  but if any  liquidating  distributions
are made to  stockholders  by the Company,  the market price of the Common Stock
will likely decline as a result of such distributions.  Moreover, as a result of
the adoption of the Plan and/or the resulting reduction in both the market price
of the Common Stock and the Company's assets and stockholders'  equity following
stockholder   distributions,   the  Common  Stock  may  no  longer  satisfy  the
requirements for continued  listing on the OTC Electronic  Bulletin Board of the
NASD. If such listing is terminated,  the  marketability of the shares of Common
Stock, which have historically been thinly traded, may decline even further.

ABSENCE OF APPRAISAL RIGHTS

         Under Delaware law, the stockholders of the Company are not entitled to
appraisal  rights for their shares of the Company's  capital stock in connection
with the  transactions  contemplated  by the Plan or to any  similar  rights  of
dissenters under Delaware law.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

         The following  discussion is a general summary of the material  federal
income tax  consequences  of the Plan to the Company and its  stockholders,  but
does not purport to be a complete analysis of all the potential tax effects. The
discussion  addresses  neither  the tax  consequences  that may be  relevant  to
particular  categories of investors  subject to special  treatment under certain
federal  income  tax laws  (such as  dealers  in  securities,  banks,  insurance
companies,  tax-exempt organizations,  and foreign individuals and entities) nor
any tax  consequences  arising  under the laws of any  state,  local or  foreign
jurisdiction. The discussion is based upon the Internal Revenue Code of 1986, as
amended  (the  "Code"),  Treasury  Regulations,  the IRS  rulings  and  judicial
decisions  now in effect,  all of which are  subject to change at any time;  any
such  changes may be applied  retroactively.  The  following  discussion  has no
binding  effect on the IRS or the  courts  and  assumes  that the  Company  will
liquidate  substantially in accordance with the Plan.  Distributions pursuant to
the Plan may occur at various times and in more than one tax year. No assurances
can be given that the tax treatment  described  herein will remain  unchanged at
the time of such


                                       12


<PAGE>

   
distributions.  No ruling has been  requested  from the IRS with  respect to the
anticipated  tax treatment of the Plan, and the Company will not seek an opinion
of counsel with respect to the anticipated tax treatment.  The failure to obtain
a ruling from the IRS or an opinion of counsel  results in less  certainty  that
the anticipated tax treatment  summarized herein will be obtained.  There can be
no assurance that the Liquidating  Trust will be treated as a liquidating  trust
for federal income tax purposes or that the  distributions  made pursuant to the
Plan will be treated as  liquidating  distributions.  If any of the  conclusions
stated herein proves to be incorrect,  the result could be increased taxation at
the  Company  and/or  stockholder  level,  thus  reducing  the  benefit  to  the
stockholders and the Company from the liquidation.
    

         Consequences  to the Company.  After the approval of the Plan and until
the  liquidation is complete,  the Company will continue to be subject to tax on
its taxable income.  The Company will generally  recognize gain or loss on sales
of its  property  pursuant  to the Plan.  Upon any  distribution  of property to
stockholders or to the Liquidating  Trust, the Company will generally  recognize
gain or loss as if such property was being sold to the  stockholders at its fair
market value. If it were determined that distributions made pursuant to the Plan
were not  liquidating  distributions,  the Company may not be able to  recognize
loss with respect to distributions  of depreciated  property to the stockholders
and/or the Liquidating Trust.

         Consequences  to  Stockholders.  As a result of the  liquidation of the
Company,  a  stockholder  will  recognize  gain or loss equal to the  difference
between  (i) the sum of the  amount  of cash  and the fair  market  value of any
property  distributed to such  stockholder  directly or through the  Liquidating
Trust,  and (ii) such  stockholder's  tax basis for his or her  shares of Common
Stock. A  stockholder's  tax basis in his or her shares will depend upon various
factors,  including  the  stockholder's  cost and the  amount  and nature of any
distributions received with respect thereto.

         A  stockholder's  gain or loss will be computed on a "per share" basis.
If the Bio-Rad Asset Sale is  consummated,  the Company expects to make a single
liquidating  distribution to the Liquidating Trust.  However,  especially if the
Bio-Rad  Asset Sale is not  consummated,  the  Company  could make more than one
liquidating  distribution,  each of which will be allocated  proportionately  to
each share of Common Stock owned by a stockholder. The value of each liquidating
distribution will be applied against and reduce a stockholder's tax basis in his
or her  shares  of  Common  Stock.  Gain  will  be  recognized  by  reason  of a
liquidating  distribution  only to the extent that the  aggregate  value of such
distributions  received by a stockholder  with respect to a share exceeds his or
her tax basis for that share.  Any loss will  generally be recognized  only when
the final  distribution  from the Company has been received and then only if the
aggregate value of the liquidating distributions with respect to a share is less
than the  stockholder's  tax basis for that share.  Gain or loss recognized by a
stockholder  will  generally  be treated as capital  gain or loss  provided  the
shares are held as capital  assets.  Such gain or loss will be subject to tax at
the short-term,  mid-term or long-term  capital gain tax rate,  depending on the
period  for which  such  shares  are held by the  stockholder.  If it were to be
determined,  however,  that  distributions  made  pursuant  to the Plan were not
liquidating distributions, the result could be treatment of the distributions as
dividends  taxable at ordinary income rates,  subject,  in the case of corporate
holders, to a dividends received deduction.

         The Company will provide  stockholders  and the IRS with a statement of
the amount of cash and the fair market value of any property  distributed to the
stockholders  during  that year,  at such time and in such manner as required by
the Treasury Regulations.

         The  Liquidating   Trust.  If  the  Company  transfers  assets  to  the
Liquidating Trust,  stockholders will be treated for tax purposes at the time of
transfer as having received their pro rata share of property  transferred to the
Liquidating  Trust,  reduced by the amount of known  liabilities  assumed by the
liquidating  trust  or  to  which  the  property  transferred  is  subject.  The
Liquidating  Trust  itself  should not be subject  to tax,  assuming  that it is
treated as a liquidating trust for federal income tax purposes.  After formation
of the Liquidating Trust, stockholders must take into account for federal income
tax  purposes  their  allocable  portion of any  income,  expense,  gain or loss
recognized  by the  trust.  As a  result  of the  transfer  of  property  to the
Liquidating  Trust  and  the  ongoing   operations  of  the  Liquidating  Trust,
stockholders  should be aware that they may be  subject  to tax,  whether or not
they have  received any actual  distributions  from the  Liquidating  Trust with
which to pay such tax.


                                       13


<PAGE>

         In addition,  as indicated  above, the Company has not obtained any IRS
ruling  as to the tax  status  of the  Liquidating  Trust,  and  there can be no
assurance,  therefore,  that the IRS will agree with the  Company's  conclusions
that the Liquidating  Trust should be treated as a liquidating trust for federal
income tax purposes.  If it were determined that the Liquidating Trust should be
classified  for  federal  income tax  purposes  as an  association  taxable as a
corporation  (as a  result  of a  change  in  law,  changes  in the  IRS  ruling
guidelines or administrative positions, a change in facts or otherwise),  income
and losses of the  Liquidating  Trust would be  reflected  on its own tax return
rather than being passed through to the Stockholders  and the Liquidating  Trust
would be required  to pay federal  income  taxes at  corporate  tax rates on its
income.  Furthermore,  all  or  a  portion  of  any  distribution  made  to  the
Stockholders  from the Liquidating  Trust could be treated as a dividend subject
to tax at ordinary income tax rates.

         Taxation of Non-United  States  Stockholders.  Foreign  corporations or
persons who are not citizens or residents of the United  States  should  consult
their tax advisors with respect to the U.S. and non-U.S. tax consequences of the
Plan.

         State and  Local  Income  Tax  Consequences.  Stockholders  may also be
subject to  liability  for state and local taxes with  respect to the receipt of
liquidating  distributions and their Interests in the Liquidating  Trust.  State
and local tax laws may differ in various  respects from federal  income tax law.
Stockholders  should  consult  their tax advisors  with respect to the state and
local tax consequences of the Plan.

         THE FOREGOING  SUMMARY OF CERTAIN  FEDERAL INCOME TAX  CONSEQUENCES  IS
INCLUDED FOR GENERAL  INFORMATION  ONLY AND DOES NOT CONSTITUTE  LEGAL ADVICE TO
ANY  STOCKHOLDER.  THE TAX  CONSEQUENCES OF THE PLAN MAY VARY DEPENDING UPON THE
PARTICULAR  CIRCUMSTANCES OF THE STOCKHOLDER.  THE COMPANY  RECOMMENDS THAT EACH
STOCKHOLDER CONSULT HIS OR HER OWN TAX ADVISOR REGARDING THE TAX CONSEQUENCES OF
THE PLAN.


                                       14


<PAGE>


                             PROTEIN DATABASES, INC.

           UNAUDITED PRO FORMA STATEMENT OF NET ASSETS IN LIQUIDATION
                                  JUNE 30, 1997

         The  following   Unaudited  Pro  Forma   Statement  of  Net  Assets  in
Liquidation   assumes  that  the  Plan  had  been   approved  by  the  Company's
stockholders,  and,  accordingly,  that the Company has adopted the  liquidation
basis  of  accounting  as of June  30,  1997.  Under  the  liquidation  basis of
accounting,  assets are stated at their  estimated net  realizable  values,  and
liabilities are stated at their anticipated settlement amounts.

         The  valuation  of assets and  liabilities  necessarily  requires  many
estimates and assumptions by management and there are substantial  uncertainties
in carrying out the provisions of the Plan. The actual value of any  liquidating
distributions will depend upon a variety of factors  including,  but not limited
to, if the Bio-Rad Asset Sale is consummated, the portion of the Holdback Amount
that will be released to the Company from escrow and, if the Bio-Rad  Asset Sale
is not  consummated,  the  actual  proceeds  from the sale of the  Assets.  Such
factors  also  include  the  ultimate   settlement   amounts  of  the  Company's
liabilities and  obligations,  actual costs incurred in connection with carrying
out the Plan,  including  management  fees and  administrative  costs during the
liquidation period, and the actual timing of the distributions.

         The  valuations  presented  in the  accompanying  Unaudited  Pro  Forma
Statement of Net Assets in  Liquidation  represent  estimates,  based on present
facts and  circumstances,  of the  estimated  net  realizable  values of assets,
assuming  the Bio-Rad  Asset Sale is  consummated  and that the entire  Holdback
Amount will be released to the Company,  and the estimated cost  associated with
carrying out the  provisions of the Plan based on the  assumptions  set forth in
the accompanying  notes. The actual values and costs are expected to differ from
the  amounts  shown  herein  and  could  be  higher  or lower  than the  amounts
estimated.  Accordingly,  it is not possible to predict the aggregate net values
ultimately distributable to stockholders, and no assurance can be given that the
amount to be received in liquidation will equal or exceed the price or prices at
which the  Common  Stock  traded  historically  or is  expected  to trade in the
future.

         The Unaudited Pro Forma  Statement of Net Assets in Liquidation  should
be read in  conjunction  with the  notes  thereto  and the  Company's  financial
statements  included in the Company's  Annual Report on Form 10-KSB for the year
ended  December 31, 1996.  The  Unaudited  Pro Forma  Statement of Net Assets in
Liquidation is not necessarily  indicative of what the actual financial position
of the Company  would have been had the  transactions  contemplated  in the Plan
occurred at June 30, 1997, nor does it purport to represent the future financial
position of the Company.

         The historical  condensed  balance sheet included  within the Unaudited
Pro Forma Statement of Net Assets in Liquidation is extracted from the Company's
unaudited  June 30, 1997  financial  statements.  In  management's  opinion,  it
includes all normal recurring adjustments necessary to a fair presentation.


                                       15


<PAGE>

                             PROTEIN DATABASES, INC.

           UNAUDITED PRO FORMA STATEMENT OF NET ASSETS IN LIQUIDATION

<TABLE>
<CAPTION>


                                                              HISTORICAL           ADJUSTMENTS
                                                              CONDENSED             TO RECORD           PRO FORMA
                                                            BALANCE SHEET           ESTIMATED          LIQUIDATING
                                                            JUNE 30, 1997       REALIZABLE VALUE      BALANCE SHEET

<S>                                                                <C>               <C>                  <C>
ASSETS
Cash and cash equivalents..............................            $145,274         $1,000,000 (1)        $1,145,274
Accounts receivable....................................             139,277            (10,000)(2)           129,277
Inventory..............................................              28,572            (28,572)(2)                 0
Prepaid expenses ......................................               8,672             (8,672)(2)                 0
Property and Equipment.................................             154,365           (154,365)(2)                 0
Other assets...........................................               9,020             (9,020)(2)                 0
                                                                 ----------         -----------          -----------
     Total.............................................            $485,180            $789,371           $1,274,551
                                                                   ========          ==========           ==========

LIABILITIES
Accounts payable.......................................              87,967                   0 (3)           87,967
Accrued expenses.......................................              58,064                   0 (3)           58,064
Unearned revenue.......................................              24,520                   0 (3)           24,520
Shut down costs and contingency reserve................                   0             550,000 (3)          550,000
                                                               ------------             -------              -------
                                                                    170,551             550,000              720,551
                                                                    -------             -------              -------
SHAREHOLDERS' EQUITY
Common Stock...........................................              14,597                   0               14,597
Additional paid-in capital.............................           8,519,636                   0            8,519,636
Accumulated deficit....................................          (8,219,604)            789,371 (2)       (7,980,233)
                                                                                       (550,000)(3)
                                                              -------------           ---------
                                                                    314,629             239,371              554,000
                                                                    -------             -------              -------
     Total.............................................            $485,180            $789,371           $1,274,551
                                                                   ========            ========           ==========

ESTIMATED NET ASSETS AVAILABLE FOR
  LIQUIDATION..........................................                                 $91,360(4)          $645,360
                                                                                        =======             ========
NUMBER OF SHARES ESTIMATED TO BE
  OUTSTANDING..........................................           1,459,724             470,000(4)         1,929,724
                                                                  =========             =======            =========
ESTIMATED NET ASSETS AVAILABLE FOR
  LIQUIDATION PER OUTSTANDING SHARE....................                                                       $ 0.33
                                                                                                              ======

</TABLE>



THE  ACCOMPANYING  NOTES  ARE AN  INTEGRAL  PART OF  THIS  UNAUDITED  PRO  FORMA
STATEMENT OF NET ASSETS IN LIQUIDATION.


                                       16


<PAGE>

                             PROTEIN DATABASES, INC.

       NOTES TO UNAUDITED PRO FORMA STATEMENT OF NET ASSETS IN LIQUIDATION
                                  JUNE 30, 1997



(1)  Adjustment to record  management's  estimate of the proceeds  received from
     the Bio-Rad Asset Sale.

(2)  Net estimated loss on disposition of the assets.

(3)  Establishment at June 30, 1997 of a contingency reserve,  which the Company
     believes  will be  adequate  for  payment of all  expenses  and other known
     liabilities  and  possible  contingent  obligations,  as well as an  amount
     estimated to be required to carry out the Plan.

<TABLE>
<CAPTION>
                                                                                                 INCREASE/(DECREASE)
                                                                                AMOUNT OF                 TO
                                                                           CONTINGENCY RESERVE   SHAREHOLDERS' EQUITY
<S>                                                                                 <C>               <C>
Existing liabilities at June 30, 1997:
  Accounts payable .....................................................            $ 87,967
  Accrued expenses......................................................              58,064
  Unearned revenue......................................................              24,520
Shut down costs and estimated operating costs (including
  compensation) to administer the Plan through dissolution..............             250,000            $(250,000)
Reserve for other contingencies.........................................             300,000             (300,000)
                                                                                   ---------           -----------
                                                                                    $720,551            $(550,000)
                                                                                    ========            ==========
</TABLE>

(4)  Represents  the aggregate  exercise  price of the options of certain former
     employees  of the  Company  to  acquire  shares of  Common  Stock at prices
     between  $0.1193 to $0.25 per share that will be "cashed-out" in connection
     with the final  liquidating  distribution  of the  Company's  assets to its
     stockholders  for an amount  equal to the positive  difference  between the
     aggregate  liquidation  amount per share of Common  Stock and the  exercise
     prices  of such  options.  See  "Principal  Provisions  of the  Plan--Stock
     Options."


                                       17


<PAGE>

RECOMMENDATION AND VOTE

         Approval of the Plan requires the affirmative  vote of the holders of a
majority of the outstanding shares of Common Stock of the Company.

         THE  BOARD OF  DIRECTORS  OF THE  COMPANY,  AFTER  CAREFUL  REVIEW  AND
CONSIDERATION  OF THE TERMS OF THE PLAN,  BELIEVES THAT THE  LIQUIDATION  OF THE
COMPANY  IS IN THE  BEST  INTERESTS  OF THE  COMPANY  AND ITS  STOCKHOLDERS  AND
UNANIMOUSLY  RECOMMENDS THAT  STOCKHOLDERS  VOTE IN FAVOR OF THE APPROVAL OF THE
PLAN.


                                   PROPOSAL 2

                      APPROVAL OF ASSET PURCHASE AGREEMENT

GENERAL

         The  Board of  Directors  of the  Company  is  proposing  that,  at the
Meeting, the stockholders approve the Asset Purchase Agreement, dated as of July
16, 1997, by and between the Company and Bio-Rad.  A copy of the Asset  Purchase
Agreement  is  attached  as  Exhibit B to this  Proxy  Statement.  The  material
features of the Asset Purchase Agreement are summarized below; this summary does
not purport to be complete and is subject in all respects to the  provisions of,
and is qualified in its entirety by reference to, the Asset Purchase Agreement.
STOCKHOLDERS ARE URGED TO READ THE ASSET PURCHASE AGREEMENT IN ITS ENTIRETY.

BACKGROUND

         See "Approval of Plan of Liquidation and  Dissolution--Background"  and
"--Reasons  for the Plan;  Directors'  Recommendation"  for a discussion  of the
background  and reasons for the  determination  by the Board of Directors of the
Company to liquidate and wind-up the affairs of the Company.  In accordance with
the  Board's  determination  that it would not be  economical  to  continue  the
operations of the Company as an independent  entity,  the Company began in March
1996 to seek a buyer for the Company or its assets.  The  Company  approached  a
number of competitors and major  distributors to solicit  interest in a possible
business  combination.  With the  exception  of Bio-  Rad,  none of the  parties
approached expressed a serious interest in such a transaction. Bio-Rad indicated
that it would be willing to consider an acquisition of the Company,  but only if
the transaction  were structured as an asset  acquisition in which Bio-Rad would
assume only selected liabilities.

         The Company and Bio-Rad commenced  preliminary  discussions  concerning
the  acquisition  transaction  in December  1996. On April 8, 1997,  the Company
announced that it was in discussions  concerning a possible sale of its business
for a purchase price of approximately  $1,000,000.  During the months of May and
June 1997, the parties  exchanged  drafts of the Asset Purchase  Agreement,  and
negotiated  the terms of the  acquisition,  including  the price,  the  Holdback
Amount and the duration and other provisions of the escrow arrangements to which
the Holdback Amount is subject.  During this period,  the Company also furnished
Bio-Rad with requested due diligence materials.  Bio-Rad also requested, and the
Company  agreed to, a royalty free  software  license  agreement  (the  "Interim
License  Agreement"),  pursuant to which Bio-Rad would be given the right to use
the  Company's  proprietary  software  for  limited  purposes  during the period
between the execution of the Asset Purchase  Agreement and the  consummation  of
the Bio-Rad Asset Sale.

         The Asset  Purchase  Agreement and the Interim  License  Agreement were
approved by the Board of Directors by unanimous written consent dated as of July
14, 1997, and were  subsequently  executed by the parties.  The Company publicly
announced the execution of the Asset Purchase Agreement by press release on July
21, 1997.


                                       18


<PAGE>

REASONS FOR THE ASSET PURCHASE AGREEMENT; DIRECTORS' RECOMMENDATION

         The Board of Directors has agreed to the Asset  Purchase  Agreement for
substantially  the same reasons that the Board has determined  that it is in the
best  interests  of  stockholders  to  liquidate  and wind-up the affairs of the
Company, including in particular:

          o    the lack of effective  distribution  channels  for the  Company's
               products;

          o    the  Company's  continuing  losses,  its loss,  and  inability to
               replace, key personnel and its inability to compete effectively;

          o    the  inability of the Company to continue to develop its products
               and the likelihood  that without such  development  the Company's
               product's  will decline in value  unless they are sold  promptly;
               and

          o    the lack of serious interest in acquiring the Company's  business
               by any party other than Bio-Rad.

         BASED UPON THE  FOREGOING,  THE BOARD OF DIRECTORS  UNANIMOUSLY  RECOM-
MENDS THAT THE STOCKHOLDERS VOTE "FOR" APPROVAL OF THE ASSET PURCHASE AGREEMENT.

         If the Asset  Purchase  Agreement is not approved by the  stockholders,
the Board of Directors will explore the alternatives then available with respect
to its assets.  In such event,  subject to stockholder  approval of the Plan, no
further stockholder approval will be sought with regard to the specific terms of
any dispositions of the assets of the Company approved by the Board of Directors
of the Company or, if applicable, the Liquidating Trustees. Approval of the Plan
shall constitute approval of any and all such dispositions.

PRINCIPAL PROVISIONS OF THE ASSET PURCHASE AGREEMENT

         The following  description  of the certain  material terms of the Asset
Purchase Agreement is not complete and is qualified in its entirety by reference
to the full text of the agreement,  which is attached as Exhibit B to this Proxy
Statement.

         Transfer of Assets. The Company will transfer to Bio-Rad  substantially
all of the assets of the Company  (other than certain  excluded  assets) used or
held in connection  with the  Company's  business of  developing,  marketing and
selling  software systems for protein and DNA analysis for life science research
and   biotechnology   applications.   The  assets  to  be  transferred   include
intellectual  property,   computers  and  software,   inventory,  fixed  assets,
property,  plant and equipment,  and certain contract rights.  The assets do not
include cash, cash equivalents and accounts receivable.

         Assumption  of  Liabilities.  Bio-Rad will assume the  liabilities  and
obligations  of the  Company  under  certain  contracts  and  permits as well as
after-sale and warranty  obligations  with respect to products  manufactured and
sold  by  the  Company  prior  to the  closing.  Bio-Rad  will  not  assume  any
liabilities of the Company except as explicitly provided.

         Purchase  Price.  In  consideration  for the sale and  transfer  of the
assets,  Bio-Rad  has  agreed  to pay the  Company  the sum of  $1,000,000  (the
"Purchase Price"). The Purchase Price, less the Holdback Amount, will be paid in
cash at the closing of the Bio-Rad Asset Sale.

         Holdback Amount;  Escrow.  The Asset Purchase  Agreement provides for a
Holdback  Amount equal to  $300,000,  to satisfy the  Company's  indemnification
obligations,  if any,  under  the Asset  Purchase  Agreement.  $200,000  of such
Holdback Amount will be available only for claims, if any, related to or arising
out of a license  agreement  with a third party,  and $100,000 will be available
for the satisfaction of  indemnification  claims generally.  The Holdback Amount
will be placed in escrow with [La Salle National Bank],  as  escrow  agent,  and
will be released to the


                                       19


<PAGE>

Company,  net of the  amount of any claims by  Bio-Rad,  on the  eleventh  month
anniversary of the closing of the Bio- Rad Asset Sale.

         Representations  and  Warranties.  The Company  and  Bio-Rad  have made
representations  and  warranties  to each  other,  and have  agreed  to  certain
covenants, which are customary in transactions of this nature.

         Conditions to Closing.  The  respective  obligations  of the parties to
consummate the  transactions  contemplated  by the Asset Purchase  Agreement are
subject to a number of  conditions,  including,  among  others,  approval of the
Asset Purchase Agreement by the Company's stockholders,  the continuing accuracy
of the  representations  and warranties  and  compliance  with all covenants and
obligations of the respective  parties. It is also a condition to the obligation
of Bio-Rad to  consummate  the  transaction  that John  Randall,  a former  vice
president of research and development and senior  programmer of the Company,  be
employed by Bio-Rad on the date of the closing.  Mr. Randall has entered into an
employment  agreement  with Bio-Rad  effective July 15, 1997, and will receive a
payment  from the  Company  in the  amount of  $35,000  upon the  closing of the
transaction.

         Indemnification.  The Company and Bio-Rad have agreed to indemnify  and
hold  harmless the other  against and in respect of any and all actions,  suits,
proceedings,  claims, demands,  assessments,  judgments, costs, damages, losses,
liabilities, taxes and deficiencies and penalties and interest thereon resulting
from,  among  other  matters,  any  misrepresentation,  breach  of  warranty  or
nonfulfillment  of any covenant or agreement on their part. All  representations
and  warranties  of the parties  shall survive the execution and delivery of the
Asset  Purchase  Agreement  and shall  continue  in full  force and effect for a
period of eleven months after the closing  date.  No indemnity  shall be payable
based upon,  arising out of or  otherwise  in respect of any  inaccuracy  or any
breach of  representation  or  warranty  with  respect  to any loss of less than
$14,500.

         Termination;  Amendment. The Asset Purchase Agreement may be terminated
and the transactions contemplated thereby may be abandoned (i) by mutual consent
of the Company and Bio-Rad;  (ii) by the Company or Bio-Rad if the closing shall
not have occurred on or before December 31, 1997; or (iii) by either the Company
or Bio-Rad  if there is a  material  breach of any  material  representation  or
warranty  of the  other  party  or if any  material  covenant  or  condition  be
performed by the other party has not been  satisfied or waived.  In the event of
any  termination of the Asset Purchase  Agreement,  such agreement  shall become
void and have no further  force and effect,  and there shall be no  liability on
the part of any of the  parties  except  for any  willful  breach  of the  Asset
Purchase Agreement occurring prior to termination.

         Expenses.  The parties to the Asset Purchase Agreement shall bear their
respective  expenses incurred in connection with the preparation,  execution and
performance thereof and the transactions contemplated thereby.

INTERIM LICENSE AGREEMENT

         The Company has  granted to Bio-Rad a royalty  free  license to use the
Company's  proprietary  software which constitutes a portion of the Assets.  The
purpose of the  license  is to enable  Bio-Rad to  familiarize  itself  with the
software pending the closing of the Bio-Rad Asset Sale and thereby be positioned
to begin  marketing the products that it is acquiring from the Company  promptly
upon consummation of the transaction. Under the terms of the license, Bio-Rad is
permitted to use the  software  only for itself and may not provide the software
to any third party,  except for the use of such software to service the existing
customers of the Company.

         The Interim  License  Agreement will terminate on the earliest to occur
of (i) the  consummation of the Bio- Rad Asset Sale, (ii) the termination of the
Asset Purchase  Agreement by the Company in accordance with its terms; (iii) the
termination of the Asset Purchase  Agreement by Bio-Rad for any reason, and (iv)
January 16, 1998,  subject to extension to April 16, 1998 if the Asset  Purchase
Agreement has not been consummated.


                                       20


<PAGE>

ABSENCE OF APPRAISAL RIGHTS

         Under Delaware law, the stockholders of the Company are not entitled to
appraisal  rights for their shares of the Company's stock in connection with the
transactions  contemplated  by the Asset  Purchase  Agreement  or to any similar
rights of dissenters under Delaware law.

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

         The following  discussion is a general summary of the material  federal
income tax consequences of the Asset Purchase Agreement to the Company, but does
not purport to be a complete  analysis of all the  potential  tax  effects.  The
discussion does not address any tax  consequences  arising under the laws of any
state,  local or foreign  jurisdiction.  The  discussion is based upon the Code,
Treasury  Regulations,  IRS rulings and judicial decisions now in effect, all of
which  are  subject  to  change at any time;  any such  changes  may be  applied
retroactively.  The following discussion has no binding effect on the IRS or the
courts and assumes that the Company will consummate the Asset Purchase Agreement
substantially in accordance with its terms.

         The Company will recognize  taxable gain or deductible loss on the sale
of each asset pursuant to the Asset Purchase Agreement.  The amount of such gain
or loss will be the difference between the Company's adjusted tax basis for each
asset and the amount of  consideration  received for that asset  (reduced by the
costs of the transaction allocable to that asset).

         It is anticipated that the net taxable income recognized by the Company
as a result of the sale of the Assets  pursuant to the Asset Purchase  Agreement
will not create a current  regular  federal income tax liability  because of (a)
the Company's  anticipated level of operating losses and expenses for the fiscal
year ending December 31, 1997 and (b) the Company's available net operating loss
carry forwards.

         The Company also  anticipates  that its level of  operating  losses and
expenses  for the fiscal year ending  December 31, 1997 will cause it to have no
alternative  minimum  taxable  income for such year for  purposes of the federal
alternative  minimum tax ("AMT").  Since, under the AMT, only 90% of alternative
minimum taxable income can be reduced by net operating loss carry  forwards,  if
the Company has  alternative  minimum  taxable income for the fiscal year ending
December 31, 1997 (without  regard to net  operating  loss carry  forwards),  it
would  have to pay  federal  alternative  minimum  tax on a  portion  of the net
taxable income  recognized as a result of the sale of its assets pursuant to the
Asset Purchase Agreement.  It is anticipated that such tax will not exceed 2% of
any such income.

         The stockholders will not recognize any gain or loss as a result of the
sale of the Assets pursuant to the Asset Purchase Agreement.

STATE AND LOCAL INCOME TAX CONSEQUENCES

         The Company may be subject to liability  for state and local taxes with
respect to the consummation of the Asset Purchase Agreement.

RECOMMENDATION AND VOTE

         Approval of the Asset Purchase  Agreement requires the affirmative vote
of the holders of a majority of the  outstanding  shares of Common  Stock of the
Company.

         THE  BOARD OF  DIRECTORS  OF THE  COMPANY,  AFTER  CAREFUL  REVIEW  AND
CONSIDERATION  OF THE TERMS OF THE ASSET PURCHASE  AGREEMENT,  BELIEVES THAT ITS
CONSUMMATION  IS IN THE BEST INTERESTS OF THE COMPANY AND ITS  STOCKHOLDERS  AND
UNANIMOUSLY  RECOMMENDS THAT  STOCKHOLDERS  VOTE IN FAVOR OF THE APPROVAL OF THE
ASSET PURCHASE AGREEMENT.


                                       21


<PAGE>

                                   PROPOSAL 3

                           APPROVAL OF CHANGE OF NAME

         On [_____], the Board of Directors adopted,  subject to the approval of
the  Company's  stockholders,  an  amendment  to the  Company's  Certificate  to
Incorporation to change the name of the Company to "IDP  Liquidating  Corp." The
current name of the Company is Protein Databases, Inc.

REASONS FOR THE CHANGE OF NAME

         Pursuant to the Asset  Purchase  Agreement,  the Company is required to
change its corporate name so as not to include the words "Protein  Databases" or
"PDI" or any other name or mark that has such a near resemblance  thereto as may
be likely to cause  confusion  or mistake to the public.  The Board of Directors
has determine that the new name -- "IDP Liquidating Corp." -- would satisfy such
restriction.

         If the  Company's  stockholders  approve  the  proposal  to change  the
Company's name, such proposal will become effective on the date a certificate of
amendment  to the  Company's  Certificate  of  Incorporation  is filed  with the
Secretary  of  State  of  the  State  of  Delaware,   the  Company's   state  of
incorporation.

RECOMMENDATION AND VOTE

         Approval of the proposal to change the name of the Company requires the
affirmative  vote of the  holders of a  majority  of the  outstanding  shares of
Common Stock of the Company.

         THE BOARD OF DIRECTORS BELIEVES THAT IT IS IN THE BEST INTERESTS OF THE
COMPANY  AND ITS  STOCKHOLDERS  TO CHANGE  ITS  CORPORATE  NAME AND  UNANIMOUSLY
RECOMMENDS THAT STOCKHOLDERS VOTE IN FAVOR OF THE PROPOSAL TO CHANGE THE NAME OF
THE COMPANY TO "IDP LIQUIDATING CORP."


                                       22


<PAGE>

         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         The  following  table sets  forth,  to the  knowledge  of the  Company,
certain  information as to the shares of Common Stock  beneficially  owned as of
the Record Date  (except as noted below) (i) by each person known by the Company
to be the beneficial owner of more than 5% of the outstanding Common Stock, (ii)
by each of the  Company's  directors,  and (iii) by all  executive  officers and
directors as a group. The stockholders  listed in the table have sole voting and
investment powers with respect to the shares indicated.


<TABLE>
<CAPTION>
                                                                          NUMBER OF SHARES          APPROXIMATE
                         NAME AND ADDRESS OF                                AND NATURE OF          PERCENTAGE OF
                           BENEFICIAL OWNER                             BENEFICIAL OWNERSHIP   OUTSTANDING SHARES (1)

<S>                                                                                <C>                    <C>
Princeton/Montrose Partners...........................................             730,545 (2)            50.05%
  243 North Highway 101, Suite 13
  Solana Beach, CA  92076
Ronald R. Hahn........................................................                   - (3)              -
  243 North Highway 101, Suite 13
  Solana Beach, CA  92076
Joel A. Fontaine......................................................                   -                  -
  775 Park Avenue, Suite 255
  Huntington, NY  11743
Stephen H. Blose......................................................             134,813 (4)             8.47%
  775 Park Avenue, Suite 255
  Huntington, NY  11743
Jon D. Randall........................................................             112,500 (5)             7.16%
  775 Park Avenue, Suite 255
  Huntington, NY  11743
Alan P. Chodosh.......................................................             112,500 (5)             7.16%
  775 Park Avenue, Suite 255
  Huntington, NY  11743
Paul J. Collins.......................................................             112,500 (5)             7.16%
  775 Park Avenue, Suite 255
  Huntington, NY  11743
All executive officers and directors as a group (2 persons)...........             730,545 (6)            50.05%

</TABLE>

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

(1)  The percentages  are calculated on the basis of 1,459,724  shares of Common
     Stock outstanding as of the Record Date. For each beneficial owner,  shares
     of Common Stock subject to  convertible  securities  exercisable  within 60
     days of the Record Date are deemed  outstanding  for  purposes of computing
     the percentage ownership of such beneficial owner.

(2)  Princeton/Montrose  Partners is controlled by its general partners,  Ronald
     R. Hahn, Chairman of the Board, President and Secretary of the Company, and
     Donald R.  Stroben.  Mr. Hahn  disclaims  any  beneficial  ownership in the
     shares of Common Stock owned by Princeton/Montrose Partners.

(3)  Does not  include  shares of Common  Stock  issuable  upon the  exercise of
     warrants and stock options.

(4)  Includes  132,500  shares of Common  Stock  issuable  upon the  exercise of
     options exercisable within 60 days of the Record Date.

(5)  Consists of 112,500  shares of Common Stock  issuable  upon the exercise of
     options exercisable within 60 days of the Record Date.

(6)  Includes  the shares of Common Stock owned by  Princeton/Montrose  Partners
     (see Note 2 above).


                                       23


<PAGE>

                              INDEPENDENT AUDITORS

         Grant Thornton LLP served as the Company's independent auditors for the
fiscal year ended  December 31, 1996. The Board of Directors does not expect any
representative of Grant Thornton LLP to attend the Meeting.

               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE.

         This Proxy  Statement is accompanied by a copy of the Company's  Annual
Report on Form 10-KSB for the fiscal year ended  December 31, 1996 and Quarterly
Report on Form 10-QSB for the period ended June 30, 1997.

         The Company hereby  incorporates by reference into this Proxy Statement
the following  documents as filed with the Securities  Exchange  Commission (the
"SEC") pursuant to Section 13 or 15(d) of the Exchange Act:

          (i)  the  Company's  Annual  Report on Form 10-KSB for the fiscal year
               ended December 31, 1996, as amended; and

          (ii) the  Company's  Quarterly  Report on Form  10-QSB  for the period
               ended June 30, 1997.


                                   FORM 10-KSB

         A copy of the Company's  Form 10-KSB for the fiscal year ended December
31, 1996, as filed with the SEC (excluding exhibits), will be forwarded, without
charge, to any stockholder of the Company entitled to vote at the Meeting,  upon
written request to the Company at 775 Park Avenue,  Suite 255,  Huntington,  New
York 11743, Attention: Corporate Secretary.

                                              By Order of the Board of Directors



                                              RONALD R. HAHN
                                              Secretary

Huntington, New York
o

                                       24


<PAGE>

                                                                       EXHIBIT A

                 PLAN OF COMPLETE LIQUIDATION AND DISSOLUTION OF
                             PROTEIN DATABASES, INC.

         This Plan of  Complete  Liquidation  and  Dissolution  (the  "Plan") of
Protein Databases,  Inc., a Delaware corporation (the "Company"), is intended to
accomplish the complete liquidation and dissolution of the Company in accordance
with the  Delaware  General  Corporation  Law and  Section  331 of the  Internal
Revenue Code of 1986, as amended (the "Code"), as follows:

         1. The Board of  Directors  of the Company  has  adopted  this Plan and
called a meeting of the Company's stockholders to take action on the Plan. If at
said meeting of the Company's  stockholders a majority of the outstanding common
stock,  par value $.01 per share,  of the Company (the "Common Stock") votes for
the  adoption of this Plan,  the Plan shall  constitute  the adopted Plan of the
Company as of the date on which  such  stockholder  approval  is  obtained  (the
"Adoption Date").

         2. The Company has entered into an Asset Purchase  Agreement,  dated as
of July 16, 1997 (the "Asset Purchase  Agreement"),  with Bio-Rad  Laboratories,
Inc., a Delaware corporation  ("Bio-Rad"),  providing for the sale to Bio-Rad of
substantially  all of its assets other than cash, cash  equivalents and accounts
receivable (such sale being referred to as the "Bio-Rad Asset Sale").

         3.  After the  Adoption  Date,  the  Company  shall  not  engage in any
business activities except to the extent necessary to preserve the values of its
assets, wind up its business and affairs and distribute its assets in accordance
with this Plan.

         No later than thirty (30) days following the Adoption Date, the Company
shall file Form 966 with the Internal Revenue Service.

         4. From and after the Adoption  Date,  the Company  shall  complete the
following corporate actions:

                    (a) If the Bio-Rad Asset Sale is consummated,  then, as soon
                    as practicable  following the closing  thereof,  the Company
                    shall  transfer  substantially  all  of  the  assets  of the
                    Company,  including the proceeds  received at the closing of
                    the Bio-Rad Asset Sale,  after deduction of cash amounts for
                    the payment of the  Company's  outstanding  liabilities  and
                    obligations and for the funding of the Company's expenses in
                    liquidation,   to  a  liquidating  trust  (the  "Liquidating
                    Trust")  (established  pursuant to Section 7 hereof) for the
                    pro rata  benefit  of the  stockholders  of the  Company  of
                    record on the date of liquidation or dissolution.

                         If the Bio-Rad  Asset Sale is not  consummated  and the
                    Asset  Purchase  Agreement  is  terminated,   the  Board  of
                    Directors shall  determine  whether and when to (i) transfer
                    the  Company's  assets,  including  the assets that had been
                    subject to the Asset Purchase Agreement,  to the Liquidating
                    Trust, or (ii) collect,  sell, exchange or otherwise dispose
                    of all of its  property  and assets  (other than cash,  cash
                    equivalents   and  accounts   receivable)  in  one  or  more
                    transactions  upon such  terms and  conditions  and for such
                    consideration  as the Board of  Directors,  in its  absolute
                    discretion, deems expedient and in the best interests of the
                    Company  and  its  stockholders.  In  connection  with  such
                    collection, sale, exchange or other disposition, the Company
                    shall  marshall its assets and collect or make provision for
                    the collection of all accounts receivable,  debts and claims
                    owing to the Company.

                    (b) The Company  shall pay or, as determined by the Board of
                    Directors,  make  reasonable  provision  to pay, all claims,
                    liabilities  and  obligations of the Company,  including all
                    contingent,  conditional  or  unmatured  claims known to the
                    Company and all


                                        1


<PAGE>

                    claims  which  are  known to the  Company  but for which the
                    identity of the claimant is unknown.

                    (c) The Company or the  Liquidating  Trust shall  distribute
                    pro rata to the  Company's  stockholders  all its  remaining
                    property  and assets,  including  the  proceeds of any sale,
                    exchange or  disposition,  except such property or assets as
                    are required for paying or making  provision for the claims,
                    liabilities   and   obligations   of   the   Company.   Such
                    distribution  may  occur  all  at  once  or in a  series  of
                    distributions and may be in such manner, and at such time or
                    times,   as  the  Board  of  Directors  or  the  Liquidating
                    Trustees,  in their absolute discretion,  may determine.  If
                    and to the extent deemed necessary, appropriate or desirable
                    by the Board of Directors or the  Liquidating  Trustees,  in
                    their absolute discretion, the Company may establish and set
                    aside a  reasonable  amount (the  "Contingency  Reserve") to
                    satisfy  claims and  potential  claims  against  the Company
                    (other  than  claims of a  stockholder  in its  capacity  as
                    such), including,  without limitation, tax obligations,  and
                    all  expenses  of the  sale of the  Company's  property  and
                    assets,  of the  collection  and  defense  of the  Company's
                    property and assets,  and of the liquidation and dissolution
                    provided  for in this  Plan.  The  Contingency  Reserve  may
                    consist of cash and/or property.

         5. The distributions to the Company's  stockholders pursuant to Section
4  hereof  shall  be in  complete  redemption  and  cancellation  of  all of the
outstanding  Common  Stock of the  Company.  As a  condition  to  receipt of any
distribution  to the  Company's  stockholders,  the  Board of  Directors  or the
Liquidating Trustees, in their absolute discretion,  may require stockholders to
(i) surrender their  certificates  evidencing the Common Stock to the Company or
its agent for  recording  of such  distributions  thereon  or (ii)  furnish  the
Company with evidence  satisfactory to the Board of Directors or the Liquidating
Trustees of the loss, theft or destruction of their certificates  evidencing the
Common Stock,  together with such surety bond or other  security or indemnity as
may be required by and satisfactory to the Board of Directors or the Liquidating
Trustees ("Satisfactory  Evidence and Indemnity").  As a condition to receipt of
any final distribution to the Company's stockholders,  the Board of Directors or
the Liquidating Trustees, in their absolute discretion, may require stockholders
to (i) surrender their  certificates  evidencing the Common Stock to the Company
or its agent for  cancellation  or (ii)  furnish the Company  with  Satisfactory
Evidence and Indemnity.

         The Company will finally close its stock transfer books and discontinue
recording  transfers of Common Stock on the earlier to occur of (i) the close of
business  on the  record  date  fixed by the  Board of  Directors  for the final
liquidating  distribution to the Liquidating Trust or the  stockholders,  as the
case may be, or (ii) the date on which  the  Company  ceases to exist  under the
Delaware General  Corporation Law (following any  post-dissolution  continuation
period thereunder),  and thereafter certificates  representing Common Stock will
not be assignable or  transferable  on the books of the Company  except by will,
intestate succession, or operation of law.

         6. If any distribution to a stockholder cannot be made, whether because
the  stockholder  cannot  be  located,  has  not  surrendered  its  certificates
evidencing the Common Stock as required  hereunder or for any other reason,  the
distribution to which such  stockholder is entitled  (unless  transferred to the
Liquidating  Trust) shall be transferred,  at such time as the final liquidating
distribution  is made by the  Company,  to the  official  of such state or other
jurisdiction  authorized  by  applicable  law to receive  the  proceeds  of such
distribution.  The proceeds of such distribution shall thereafter be held solely
for the benefit of and for ultimate distribution to such stockholder as the sole
equitable  owner thereof and shall be treated as abandoned  property and escheat
to the applicable state or other jurisdiction in accordance with applicable law.
In no event shall the proceeds of any such distribution  revert to or become the
property of the Company.

         7. If  deemed  necessary,  appropriate  or  desirable  by the  Board of
Directors,  in its absolute  discretion,  in furtherance of the  liquidation and
distribution of the Company's assets to the Company's  stockholders,  as a final
liquidating distribution or from time to time, the Company shall transfer to the
Liquidating  Trust  any  assets  of the  Company  which  are (i) not  reasonably
susceptible to distribution to the Company's stockholders, including assets held
on behalf of the Company's  stockholders (a) who cannot be located or who do not
tender their certificates


                                        2


<PAGE>

evidencing the Common Stock to the Company or its agent as hereinabove  required
or (b) to whom  distributions  may not be made  based  upon  restrictions  under
contract or law,  including,  without  limitation,  restrictions  of the federal
securities  laws and  regulations  promulgated  thereunder  or (ii)  held as the
Contingency Reserve.

         The Board of  Directors  is hereby  authorized  to appoint  one or more
individuals,  corporations,  partnerships  or other persons,  or any combination
thereof,  including,  without limitation,  any one or more officers,  directors,
employees,  agents or representatives of the Company,  to act as the Liquidating
Trustee or Trustees for the benefit of the Company's stockholders and to receive
any assets of the Company. Any Liquidating Trustees appointed as provided in the
preceding sentence shall succeed to all right, title and interest of the Company
of any kind and character  with respect to such  transferred  assets and, to the
extent of the assets so  transferred,  shall assume all of the  liabilities  and
obligations  of the Company,  including,  without  limitation,  any  unsatisfied
claims and  unascertained or contingent  liabilities.  Further,  the Liquidating
Trustees shall have the full power to liquidate, deal with, give receipt for and
manage all of the property and assets  conveyed to the  Liquidating  Trustees by
the Company, to the exclusion of the Company and its officers and directors. Any
such  conveyance  to  the  Liquidating  Trustees  shall  be  in  trust  for  the
stockholders  of  the  Company  (who  shall  be  considered  the  owners  of the
Liquidating  Trust within the meaning of Subpart E of  Subchapter J of the Code)
and not for the use or benefit of the  Liquidating  Trustees or any other person
and  any  assumption  of  liabilities  and  obligations  of the  Company  by the
Liquidating  Trustees shall be solely in their capacity as Liquidating  Trustee.
The  Company,  subject  to this  Section  7 and as  authorized  by the  Board of
Directors,  in its  absolute  discretion,  may enter  into a  liquidating  trust
agreement  with the  Liquidating  Trustees,  on such terms and conditions as the
Board of Directors, in its absolute discretion, may deem necessary,  appropriate
or  desirable.  Approval  of this Plan by a majority of the  outstanding  Common
Stock shall  constitute the approval of the Company's  stockholders  of any such
appointment and any such liquidating  trust agreement as their act and as a part
hereof as if herein written.

         8.  Whether or not a  Liquidating  Trust  shall  have been  established
pursuant to Section 7, in the event it should not be feasible for the Company to
make the final  distribution to stockholders of all assets and properties of the
Company prior to the date which is one year after the Adoption Date, then, on or
before such date, the Company shall be required to establish a Liquidating Trust
pursuant  to  Section  6  and  transfer  any  remaining  assets  and  properties
(including,  without limitation,  any uncollected claims,  contingent assets and
the Contingency Reserve) to the Liquidating Trustees as set forth in Section 7.

         9. After the Adoption Date, the officers of the Company shall,  at such
time as the Board of Directors,  in its absolute  discretion,  deems  necessary,
appropriate or desirable, obtain any certificates required from the Delaware tax
authorities and, upon obtaining such  certificates,  the Company shall file with
the  Secretary of State of the State of Delaware a  certificate  of  dissolution
(the  "Certificate  of  Dissolution")  in  accordance  with  Section  275 of the
Delaware General Corporation Law.

         10. Approval of this Plan by a majority of the outstanding Common Stock
shall  constitute  the  approval  of the  Company's  stockholders  of the  sale,
exchange or other disposition,  in liquidation of all of the property and assets
of the Company not otherwise distributed to the stockholders, whether such sale,
exchange  or  other  disposition  occurs  in  one  transaction  or a  series  of
transactions,  and shall  constitute  ratification  of all  contracts  for sale,
exchange or other disposition which are conditioned on approval of this Plan.

         11. In connection with and for the purpose of implementing and assuring
completion  of this Plan,  the Company  may, in the absolute  discretion  of the
Board of Directors, pay any brokerage,  agency,  professional and other fees and
expenses of persons  rendering  services to the Company in  connection  with the
collection,  sale,  exchange or other disposition of the Company's  property and
assets and the implementation of this Plan.

         12. In connection with and for the purpose of implementing and assuring
completion  of this Plan,  the Company  may, in the absolute  discretion  of the
Board of Directors, pay to the Company's present or former officers,  directors,
employees,  agents  and  representatives,   or  any  of  them,  compensation  or
additional  compensation  above their  regular  compensation,  in money or other
property, in recognition of the extraordinary efforts they, or any of them, will
be  required  to  undertake,  or  actually  undertake,  in  connection  with the
implementation of this Plan.


                                        3


<PAGE>

Approval  of this Plan by a  majority  of the  outstanding  Common  Stock  shall
constitute the approval of the Company's stockholders of the payment of any such
compensation.

         13. The  Company  shall  continue to  indemnify  its present and former
officers,  directors,  employees,  agents and representatives in accordance with
its certificate of  incorporation,  as amended,  and by-laws and any contractual
arrangements  for actions taken in connection  with this Plan and the winding up
of the affairs of the  Company.  The  Company's  obligation  to  indemnify  such
persons may be satisfied out of the assets of the Liquidating  Trust.  The Board
of Directors and the Liquidating  Trustees,  in their absolute  discretion,  are
authorized  to obtain and  maintain  insurance  as may be necessary to cover the
Company's obligations hereunder.

         14.  Notwithstanding   approval  of  this  Plan  and  the  transactions
contemplated  hereby by the Company's  stockholders,  the Board of Directors may
modify,  amend or abandon  this Plan and the  transactions  contemplated  hereby
without further action by the Company's  stockholders to the extent permitted by
the Delaware General Corporation Law.

         15. The Board of Directors of the Company is hereby authorized, without
further  action by the  Company's  stockholders,  to do and perform or cause the
officers of the Company,  subject to approval of the Board of  Directors,  to do
and perform,  any and all acts, and to make,  execute,  deliver or adopt any and
all agreements,  resolutions,  conveyances,  certificates and other documents of
every kind which are deemed necessary, appropriate or desirable, in the absolute
discretion  of  the  Board  of  Directors,   to  implement  this  Plan  and  the
transactions contemplated hereby, including, without limiting the foregoing, all
filings or acts  required by any state or federal law or  regulation  to wind up
its affairs.


                                        4

<PAGE>

                                                                       EXHIBIT B


                            ASSET PURCHASE AGREEMENT

                                 by and between

                             PROTEIN DATABASES, INC.

                                  as "Seller,"

                                       and

                           BIO-RAD LABORATORIES, INC.

                                   as "Buyer"


                                Dated: July   , 1997


<PAGE>



                                    EXHIBITS

Exhibit

   A              Facilities.........................................      A-1

   B              Allocation of Purchase Price.......................      B-1

   C              Bill of Sale.......................................      C-1

   D              Assignment of Leases...............................      D-1

   E              Assignment and Assumption of Contract Rights.......      E-1

   F              Assignment of Patents, Trademarks and Copyrights...      F-1

   G              Required Consents or Approvals of Buyer............      G-1

   H              Agreement Not to Compete...........................      H-1

   I              Source Code Verification Protocol..................      I-1

   J              Confidentiality Agreement..........................      J-1

   K              Escrow Agreement...................................      K-1

   L              John Randall Employment Agreement..................      L-1


                                        i

<PAGE>

                            ASSET PURCHASE AGREEMENT

         This  Asset  Purchase  Agreement,  dated as of July ,  1997,  is by and
between  Bio-Rad  Laboratories,  Inc.,  a Delaware  corporation  ("Buyer"),  and
Protein Databases, Inc., a Delaware corporation ("Seller").

                                    RECITALS

         A.  Seller  owns  certain  assets  which it uses in the  conduct of the
Business (as defined below).

         B. Buyer desires to purchase from Seller, and Seller desires to sell to
Buyer,  such  assets  upon the  terms  and  subject  to the  conditions  of this
Agreement.

                                    AGREEMENT

         NOW  THEREFORE,  in  consideration  of  the  respective  covenants  and
promises  contained  herein and for other good and valuable  consideration,  the
receipt and adequacy of which is hereby  acknowledged,  the parties hereto agree
as follows:

                                    ARTICLE I

                                   DEFINITIONS

     1.1 Defined Terms. As used herein, the terms below shall have the following
meanings.  Any of such terms, unless the context otherwise requires, may be used
in the singular or plural, depending upon the reference.

         "Action" shall mean any action,  claim, suit,  litigation,  proceeding,
labor  dispute,   arbitral  action,   governmental  audit,   inquiry,   criminal
prosecution, investigation or unfair labor practice charge or complaint.

         "Ancillary   Agreement"   shall   mean:   Agreement   Not  to  Compete,
substantially in the form attached hereto as Exhibit H.

         "Assets" shall mean all of the right,  title and interest in and to the
business,  properties,  assets  and  rights of any  kind,  whether  tangible  or
intangible,  real or personal and constituting,  or used or useful in connection
with,  or related to, the  Business  owned by Seller or in which  Seller has any
interest, including without limitation all of Seller's right, title and interest
in the following:

         (a) all Contract Rights;

         (b) Equipment;

         (c) all Inventory;

         (d) all Proprietary Rights relating to the Business;


<PAGE>

         (e) to the extent transferable, all Permits;

         (f) all computers and software;

         (g) all Insurance Policies, to the extent assignable;

         (h) all available supplies,  sales literature,  promotional literature,
customer,  supplier and distributor lists, art work, and display units,  related
to the Business;

         (i) all rights under or pursuant to all warranties, representations and
guarantees made by suppliers in connection with the Assets or services furnished
to Seller pertaining to the Business or affecting the Assets, to the extent such
warranties, representations and guarantees are assignable;

but excluding therefrom the Excluded Assets.

         "Balance  Sheet"  shall  mean the  balance  sheet of Seller at the date
indicated thereon, together with the notes thereon.

         "Books  and  Records"  shall mean (a) all  records  and lists of Seller
pertaining to the Assets,  (b) all records and lists pertaining to the Business,
customers,  suppliers or personnel of Seller, and (c) all product,  business and
marketing plans of Seller.

         "Business"  shall  mean  the  Seller's  business  of  the  development,
marketing and selling of software  systems for protein and DNA analysis for life
science research and biotechnology applications, all as it relates to the Assets
transferred to Buyer hereunder.

         "Closing  Date" shall mean  October 30,  1997,  or such earlier date as
Buyer and Seller shall reasonably mutually agree upon if Seller has obtained the
consent of its Shareholders to this Asset Purchase Agreement.

         "Code" shall mean the Internal  Revenue Code of 1986,  as amended,  and
the rules and regulations thereunder.

         "Contract" shall mean any agreement,  contract, note, loan, evidence of
indebtedness,  purchase, order, letter of credit, indenture,  security or pledge
agreement, franchise agreement, undertaking,  practice, covenant not to compete,
employment  agreement,  license,  instrument,  obligation or commitment to which
Seller is a party or is bound and which  relates to the  Business or the Assets,
whether oral or written, but excluding all Leases.

         "Contract  Rights"  shall mean all of Seller's  rights and  obligations
under the  Contracts  listed on Schedule 4.7 and not rejected by Buyer and under
any  Contracts  not so listed which  Buyer,  in its sole  discretion,  elects to
accept and assume.

         "Copyrights" shall mean registered  copyrights,  copyright applications
and unregistered copyrights.


                                        2

<PAGE>

         "Court  Order"  shall  mean any  judgment,  decision,  consent  decree,
injunction, ruling or order of any federal, state or local court or governmental
agency,  department  or authority  that is binding on any person or its property
under applicable law.

         "Default"  shall mean (a) a breach of or default  under any Contract or
Lease,  (b) the  occurrence  of an event  that with the  passage  of time or the
giving of notice  or both  would  constitute  a breach of or  default  under any
Contract or Lease,  or (c) the  occurrence  of an event that with or without the
passage  of time or the  giving of notice or both  would give rise to a right of
termination, renegotiation or acceleration under any Contract or Lease.

         "Disclosure  Schedule" shall mean a schedule  executed and delivered by
Seller to Buyer as of the date  hereof  which sets forth the  exceptions  to the
representations and warranties  contained in Article IV hereof and certain other
information  called for by this  Agreement.  Unless  otherwise  specified,  each
reference  in this  Agreement  to any  numbered  schedule is a reference to that
numbered schedule which is included in the Disclosure Schedule.

         "Encumbrance"  shall  mean any claim,  lien,  pledge,  option,  charge,
easement,   security   interest,   deed  of   trust,   mortgage,   right-of-way,
encroachment,   building  or  use  restriction,   conditional  sales  agreement,
encumbrance or other right of third  parties,  whether  voluntarily  incurred or
arising by operation of law, and includes,  without limitation, any agreement to
give any of the foregoing in the future,  and any contingent sale or other title
retention agreement or lease in the nature thereof.

         "Excluded  Assets,"   notwithstanding   any  other  provision  of  this
Agreement,  shall  mean the  following  assets  of  Seller  which  are not to be
acquired by Buyer hereunder:

         (a) accounts notes and other receivables;

         (b) all cash and cash equivalents held by Seller;

         (c) all Permits, to the extent not transferable;

         (d) all claims,  causes of action, choses in action, rights of recovery
and rights of set-off of any kind against any person or entity arising out of or
relating to the Assets to the extent related to the Excluded Liabilities;

         (e) all refunds,  deposits,  prepayments or prepaid expenses (including
without limitation any prepaid insurance premiums) of Seller;

         (f) all Books and Records;

         (g) all deposits and prepaid expenses of Seller;

         (h) all claims,  causes of action, choses in action, rights of recovery
and  rights of  set-off of any kind,  against  any  person or entity,  including
without  limitation any liens,  security  interests,  pledges or other rights to
payment or to enforce payment in connection with products delivered by Seller on
or prior to the Closing Date; and


                                        3

<PAGE>

         (i) the equipment listed on Schedule 1.l.

         "Facilities" shall mean all plants, offices,  manufacturing facilities,
stores,  warehouses,  improvements,   administration  buildings,  and  all  real
property and related  facilities  which are  identified or listed on Exhibit "A"
attached hereto.

         "Facility  Lease(s)" shall mean all of the leases of Facilities  listed
on Schedule 4.7.

         "Financial   Statements"   shall  mean  the  1996  Year-End   Financial
Statements  and the Quarterly  Financial  Statements for the quarter ended March
31, 1997.

         "Fixtures and  Equipment"  shall mean all of the  furniture,  fixtures,
furnishings,  machinery,  spare  parts,  supplies,  equipment,  tooling,  molds,
patterns,  dies and other tangible personal property owned by Seller and used in
connection with the Business,  wherever  located and including any such Fixtures
and  Equipment in the  possession  of any of Seller's  suppliers,  including all
warranty rights with respect thereto.

         "Insurance  Policies" shall mean the insurance  policies related to the
Assets listed on Schedule 4.22.

         "Interim  Balance  Sheet" shall mean the unaudited  Balance Sheet dated
the Interim Balance Sheet Date.

         "Interim Balance Sheet Date" shall mean March 31, 1997.

         "Interim Financial Statements" shall mean the Interim Balance Sheet and
the unaudited statements of operations, changes in shareholders' equity and cash
flow for the period ended on the Interim Balance Sheet Date.

         "Inventory"  shall mean all of Seller's  inventory  held for resale and
all of Seller's raw materials,  work in process,  finished  products,  wrapping,
supply and packaging  items and similar  items with respect to the Business,  in
each case wherever the same may be located.

         "Leased Real Property" shall mean all leased property  described in the
Facility Lease.

         "Leasehold  Estates" shall mean all of Seller's  rights and obligations
as lessee under the Lease.

         "Leasehold Improvements" shall mean all leasehold improvements situated
in or on the Leased real property and owned by Seller.

         "Lease(s)"  shall mean the existing  lease with respect to the personal
or real property of Seller listed on Schedule 4.7 and not rejected by Buyer.

         "Liabilities"   shall   mean  any   direct   or   indirect   liability,
indebtedness,  obligation,  commitment,  expense, claim, deficiency, guaranty or
endorsement  of or by  any  person  of  any  type,  whether  accrued,  absolute,
contingent, matured, unmatured or other.


                                        4

<PAGE>


         "material  adverse effect" or "material adverse change" shall mean with
respect to the Business or the Assets any  significant  adverse effect or change
in the condition  prospects,  assets,  Liabilities or operations of the Business
and/or the Assets or on the  ability of Seller to  consummate  the  transactions
contemplated  hereby, or any event or condition which would, with the passage of
time, constitute a "material adverse effect" or "material adverse change."

         "ordinary  course of  business"  or  "ordinary  course" or any  similar
phrase  shall mean the  ordinary  course of the  Business  and  consistent  with
Seller's past practice.

         "Patents" shall mean all patents and patent applications and registered
design and registered design applications.

         "Permits"  shall mean all  licenses,  permits,  franchises,  approvals,
authorizations,  consents  or  orders  of, or  filings  with,  any  governmental
authority,  whether foreign,  federal, state or local, necessary for the conduct
of the Business.

         "Proprietary Rights" shall mean all of Seller's Copyrights (which shall
include registered,  unregistered and common law copyright rights), Patents, and
Patent Applications,  web sites and web services (including necessary software),
Trademarks, technology rights and licenses, computer software (including without
limitation any source or object codes therefor or documentation relating thereto
including, but not limited to, the source and object codes referenced in Exhibit
I-1),  trade  secrets,   franchises,  flow  charts,  customer  lists,  know-how,
inventions, designs,  specifications,  plans, drawings and intellectual property
rights.

         "Regulations" shall mean any laws, statutes,  ordinances,  regulations,
rules, notice requirements,  court decisions,  agency guidelines,  principles of
law and orders of any foreign,  federal, state or local government and any other
governmental  department or agency,  including without limitation  Environmental
Laws, energy, public utility,  zoning,  building and health codes,  occupational
safety  and  health  and  laws   respecting   employment   practices,   employee
documentation, terms and conditions of employment and wages and hours.

         "Representative" shall mean any officer, director, principal, attorney,
agent, employee or other representative.

         "Tax" shall mean any federal, state, local, foreign or other tax, levy,
impost, fee, assessment or other government charge, including without limitation
income, estimated income, business,  occupation,  franchise,  property, payroll,
personal property, sales, transfer, use, employment, commercial rent, occupancy,
franchise or withholding  taxes, and any premium,  including without  limitation
interest, penalties and additions in connection therewith.

         "Trademarks"  shall  mean  registered  trademarks,  registered  service
marks,  trademark and service mark applications and unregistered  trademarks and
service marks.

         "Year-End  Financial  Statements"  shall mean the audited Balance Sheet
dated  December 31, 1996,  and the related  audited  statements  of  operations,
changes in  shareholders'  equity and cash flow for the year ended  December 31,
1996.

     1.2 Other  Defined  Terms.  The  following  terms  shall have the  meanings
defined for such terms in the Sections set forth below:


                                        5

<PAGE>

                  Term                                           Section
                  ----                                           -------

                  Adjustment Amount                              2.5(b)
                  Assumed Liabilities                            2.2
                  Assumption Documents                           3.2(c)
                  Bulk Sales Act                                 10.4
                  Claim                                          10.3(d)
                  Claim Notice                                   10.3(d)
                  Closing                                        3.1
                  Closing Balance Sheet                          2.5(a)
                  Damages                                        10.3(a)
                  Environmental Conditions                       4.26(a)
                  Environmental Laws                             4.26(a)
                  Excluded Liabilities                           2.3
                  Hazardous Substance                            4.26(a)
                  Holdback Amount                                2.4(c)
                  Inventory and Asset Procedures                 2.6
                  Net Book Value                                 2.5(b)
                  Permitted Encumbrances                         4.6(a)
                  Proposed Acquisition Transaction               6.2(a)
                  Purchase Price                                 2.4(a)
                  Release                                        4.28(a)
                  Rehired Employee                               6.6(a)

                                   ARTICLE II

                           PURCHASE AND SALE OF ASSETS

     2.1  Transfer of Assets.  Upon the terms and subject to the  conditions
contained herein, at the Closing, Seller will sell, convey, transfer, assign and
deliver to Buyer, and Buyer will acquire from Seller, the Assets, free and clear
of all Encumbrances other than Permitted Encumbrances.

     2.2 Assumption of Liabilities. Upon the terms and subject to the conditions
contained herein, at the Closing, Buyer shall assume the following, and only the
following, Liabilities of Seller (the "Assumed Liabilities"):

         (a) All Liabilities accruing,  arising out of, or relating to events or
occurrences  happening  after the  Closing  Date under the  Contracts  listed on
Schedule 4.7 and not rejected by Buyer,  or under  Contracts or Leases which are
not listed on Schedule 4.7 but which Buyer,  in its sole  discretion,  elects to
accept and assume,  but not  including  any  Liability for any Default under any
such Contract occurring on or prior to the Closing Date; and

     2.3  Excluded  Liabilities.  Notwithstanding  any other  provision  of this
Agreement,  except for the Assumed  Liabilities  expressly  specified in Section
2.2, Buyer shall not assume, or otherwise be responsible for, any Liabilities of
Seller, whether liquidated or unliquidated, or known or unknown, whether arising
out  of  occurrences   prior  to,  at  or  after  the  date  hereof   ("Excluded
Liabilities"), which Excluded Liabilities include, without limitation:


                                        6

<PAGE>

         (a) Except as otherwise provided in Section 6.5, any Liability to or in
respect  of any  employees  or  former  employees  of Seller  including  without
limitation (i) any employment agreement,  whether or not written, between Seller
and any person,  (ii) any Liability under any employee plan or employee  benefit
at any time  maintained,  contributed  to or required to be contributed to by or
with  respect  to Seller or under  which  Seller  may  incur  Liability,  or any
contributions,  benefits or Liabilities  therefor, or any Liability with respect
to Seller's withdrawal or partial withdrawal from or termination of any Employee
Plan and (iii) any claim of an unfair  labor  practice,  or any claim  under any
state  unemployment  compensation or worker's  compensation law or regulation or
under any federal or state employment  discrimination  law or regulation,  which
shall have been  asserted on or prior to the Closing Date or is based on acts or
omissions which occurred on or prior to the Closing Date;

         (b) Any  Liability  of Seller in respect  of any Tax,  other than sales
taxes as a result of the sale of the Assets pursuant hereto ;

         (c) Any Liability  arising from any injury to or death of any person or
damage to or destruction of any property, whether based on negligence, breach of
warranty, strict liability, enterprise liability or any other legal or equitable
theory arising from defects in products  manufactured or from services performed
by or on  behalf  of  Seller  or any  other  person or entity on or prior to the
Closing Date;

         (d) Any  Liability  of Seller  arising  out of or related to any Action
against Seller or any Action which adversely  affects the Assets and which shall
have been asserted on or prior to the Closing Date or to the extent the basis of
which shall have arisen on or prior to the Closing Date;


         (e) Any Liability of Seller  resulting from entering  into,  performing
its obligations  pursuant to or consummating the  transactions  contemplated by,
this Agreement (including without limitation any Liability of Seller pursuant to
Article X hereof), other than sales taxes as a result of the sales of the Assets
pursuant hereto;

         (f) Any Liability related to any Facility.

     2.4 Purchase Price.

         (a) Purchase Price.  At the Closing,  upon the terms and subject to the
conditions set forth herein,  Buyer shall pay to Seller for the sale,  transfer,
assignment,  conveyance and delivery of the Assets,  the aggregate amount of One
Million Dollars ($1,000,000) (the "Purchase Price"), less the Holdback Amount by
wire transfer of immediately  available funds to an account designated by Seller
and shall  assume  the  Assumed  Liabilities  pursuant  to this  Agreement.  The
Purchase  Price shall be  allocated  among the Assets in the manner  required by
Section 1060 of the Code and regulations  thereunder.  Exhibit B attached hereto
sets forth the amount of the Purchase  Price  allocable  to the various  Assets.
Buyer and  Seller  agree to each  prepare  and file on a timely  basis  with the
Internal  Revenue  Service  substantially  identical  initial  and  supplemental
Internal Revenue Service Forms 8594 "Asset Acquisition  Statements Under Section
1060" consistent with Exhibit B and which gives effect to any Adjustment  Amount
determined in accordance with Section 2.5 hereof.


                                        7

<PAGE>

         (b)  Agreement Not to Compete.  At the Closing,  Buyer shall pay Seller
pursuant  to the  Agreement  Not to  Compete  attached  hereto as  Exhibit H, an
aggregate of Ten Dollars ($10.00).

         (c) The  "Holdback  Amount"  shall be an amount equal to Three  Hundred
Thousand Dollars ($300,000) which Buyer, at the Closing,  shall, pursuant to the
Escrow  Indemnification  Agreement  deliver to the Escrow  Agent named  therein,
pending the determination of Seller's  indemnification  obligations,  if any, as
set forth in Section 10.3; provided, however, that $200,000 of such amount shall
be available only for claims, if any, related to or arising out of the Millipore
License Agreement dated September 15, 1987.

     2.5 (Intentionally omitted)

     2.6 Inventory and Asset Procedures and Partial Verification of Source Code.

         (a) Inventory  Procedures.  The quantities of Inventory to be purchased
and sold hereunder  shall be determined by an itemized  inventory to be taken at
such time as Buyer and Seller mutually agree and shall be adjusted to book as of
the Closing Date based upon a physical inventory pursuant to which all Inventory
will be counted as to quantity by  personnel  of Seller and Buyer using the same
procedures  normally used by Seller to take inventories of the type of Inventory
being  counted;  provided,  that if Buyer and Seller shall  mutually  agree,  an
outside  inventory  service  or  services  (the  "Inventory  Service")  mutually
selected by Seller and Buyer may be selected to take such inventory.  Both Buyer
and Seller  will have the right to have  Representatives  present to observe the
physical  inventories.  Any  disputes as to the  physical  count,  usability  or
salability of any item of Inventory  will, if possible,  be resolved  while such
physical  inventory  is being  taken.  Any  unresolved  disputes  regarding  the
foregoing not resolved by the Closing Date will be separately listed and settled
as soon as  expeditiously  practicable  thereafter  by the parties or by another
independent  third party  mutually  acceptable to both  parties,  or if they are
unable to agree then by the Inventory  Service.  The  determination of any third
party so  engaged  shall be final and  binding  on the  parties.  No  failure to
resolve any such  matters  shall  prevent the Closing or payment of the Purchase
Price for the Assets.  This inventory procedure may be used by Buyer to classify
or itemize any of the other Assets, except for the Proprietary Rights.

         (b) Source Code. In order to partially  validate the  functionality  of
the source code,  the versions of Seller's  source code for  producing  products
currently  in use shall be  partially  verified  prior the  Closing  at  Buyer's
facility in Hercules,  California, using the protocol outlined in Exhibit I. The
verification  shall be subject  to the  Confidentiality  Agreement  set forth in
Exhibit J.

     2.8 Closing Costs;  Transfer Taxes and Fees. Provided all computer codes in
the Proprietary  Rights are transferred to Seller by Buyer hereunder by means of
telephone lines or other electronic  transmission  mediums, such as satellite or
the internet,  Buyer shall be responsible for any documentary and transfer taxes
and any sales,  use or other taxes  imposed by reason of the transfers of Assets
provided hereunder and any deficiency, interest or penalty asserted with respect
thereto,  Buyer  shall  also pay the fees and costs of  recording  or filing all
applicable conveyancing instruments described in Section 3.2(a). Buyer shall pay
all costs of applying  for new Permits and  obtaining  the  transfer of existing
Permits which may be lawfully transferred.


                                        8

<PAGE>

     2.9 Sale of  Equipment  Prior to Closing.  At any time or from time to time
prior to Closing, Seller may sell any or all of the equipment listed on Schedule
4.5 in accordance with the following procedures:

         (i) Seller shall notify Buyer of the equipment that it proposes to sell
and the aggregate sales price that it anticipates receiving therefor.

         (ii)  If  Buyer  consents  to the  sale,  which  consent  shall  not be
unreasonably withheld, Seller may sell the equipment for an aggregate price that
is not less than 10% of the aggregate price set forth in the notice of Seller to
Buyer regarding same.

         (iii)  Following any such sale of equipment,  Seller shall notify Buyer
of the consummation of the sale, the equipment sold and the proceeds received.

         (iv)  Seller  shall hold all such  proceeds of sale in trust for Buyer,
which  proceeds  shall be  delivered  to Buyer at the  Closing,  or, at  Buyer's
election, deducted from the cash Purchase Price to be delivered to Seller at the
Closing.


                                   ARTICLE III

                                     CLOSING

     3.1  Closing.  The  Closing of the  transactions  contemplated  herein (the
"Closing")  shall be held at _____ a.m.  local time on the  Closing  Date at the
offices of Kramer,  Levin,  Naftalis & Frankel,  919 Third Avenue,  New York, NY
10022-3903, unless the parties hereto otherwise agree.

     3.2 Conveyances at Closing.

         (a)  Instruments  and  Possession.  To  effect  the sale  and  transfer
referred to in Section 2.1 hereof,  Seller  will,  at the  Closing,  execute and
deliver to Buyer:

              (i) one or more  bills of sale,  in the form  attached  hereto  as
Exhibit C, conveying in the aggregate all of Seller's  owned  personal  property
included in the Assets;

              (ii) (Intentionally omitted)

              (iii) subject to Section 9.2, Assignments of Contract Rights, each
in the form of Exhibit E attached hereto, with respect to the Contract Rights;

              (iv)  Assignments of Patents,  Copyrights and Trademarks and other
Proprietary Rights (including an assignment of all of Seller's rights, title and
interest to the name(s) Protein Databases, PDI, and all variations thereof) each
in the form  attached  hereto as  Exhibit  F, in  recordable  form to the extent
necessary to assign such rights;

              (v) such other  instruments as shall be requested by Buyer to vest
in Buyer title in and to the Assets in accordance with the provisions hereof.


                                        9

<PAGE>

         (b) Assumption  Document.  Upon the terms and subject to the conditions
contained  herein, at the Closing Buyer shall deliver to Seller an instrument of
assumption  substantially  in the form attached  hereto as Exhibit E, evidencing
Buyer's  assumption,  pursuant to Section 2.2, of the Assumed  Liabilities  (the
"Assumption Document").

         (c) Form of  Instruments.  To the extent that a form of any document to
be  delivered  hereunder is not attached as an Exhibit  hereto,  such  documents
shall be in form and substance, and shall be executed and delivered in a manner,
reasonably satisfactory to Buyer and Seller.

         (d)  Certificates;   Opinions.  Buyer  and  Seller  shall  deliver  the
certificates,  opinions of counsel and other  matters  described in Articles VII
and VIII.

         (e) Consents.  Subject to Section 9.2, Seller shall deliver all Permits
and any other third party consents,  if any,  required for the valid transfer of
the Assets as contemplated by this Agreement.


                                   ARTICLE IV

                    REPRESENTATIONS AND WARRANTIES OF SELLER

         Seller,  hereby  represent  and warrant to Buyer as follows,  except as
otherwise  set  forth on the  Disclosure  Schedule,  which  representations  and
warranties are, as of the date hereof, and will be, as of the Closing Date, true
and correct:

     4.1 Organization of Seller. Seller is a corporation duly organized, validly
existing and in good standing  under the laws of the State of Delaware with full
corporate  power and authority to conduct the Business as it is presently  being
conducted  and to own and  lease  its  properties  and  assets.  Seller  is duly
qualified  to do business as a foreign  corporation  and is in good  standing in
each  jurisdiction  where the character of its properties owned or leased or the
nature of its activities  make such  qualification  necessary,  except where the
failure to be so qualified or in good standing would not have a material adverse
effect on the Assets or the Business. Copies of the Certificate of Incorporation
and Bylaws of Seller, and all amendments thereto,  heretofore delivered to Buyer
are accurate  and complete as of the date hereof.  Schedule 4.1 contains a true,
correct and complete list of all  jurisdictions  in which Seller is qualified to
do business as a foreign corporation.

     4.2 Subsidiaries. Except as set forth in Schedule 4.2, Seller does not have
any  Subsidiaries  which are used by Seller in the  conduct of the  Business  or
which own any of the Assets.

     4.3  Authorization.  Seller has all requisite power and authority,  and has
taken all corporate action necessary,  to execute and deliver this Agreement and
the Ancillary Agreements, to consummate the transactions contemplated hereby and
thereby and to perform its obligations  hereunder and thereunder.  The execution
and delivery of this  Agreement  and the  Ancillary  Agreement by Seller and the
consummation by Seller of the transactions  contemplated hereby and thereby have
been duly  approved by the board of  directors,  except for the  approval of its
shareholders  which will be  obtained  prior to  Closing,  by  Seller.  No other
corporate  proceedings  on the part of Seller are  necessary to  authorize  this
Agreement and the Ancillary  Agreement and the transactions  contemplated hereby
and thereby. This Agreement has been duly executed and delivered by Seller and


                                       10

<PAGE>

is, and upon  execution and delivery of the Ancillary  Agreement will be, legal,
valid and binding obligations of Seller enforceable against Seller in accordance
with their terms.

     4.4 No Adverse Change. Since the Interim Balance Sheet Date:

         (a) there has been no actual or threatened adverse change in the Assets
or any  event,  condition  or state of facts,  in either  case that is, or would
result in a  material  adverse  change  in the  Assets  or the  Business  or the
prospects for the Business; it being understood, however, that Seller has ceased
to develop or sell any of its products or to maintain  warranty  support for any
of its products, and has terminated all of its programming,  marketing, warranty
and financial personnel, effective June 1997; and,

         (b) except in the ordinary  course of business,  there has not been any
sale or other disposition of any of the Assets or any Encumbrance  placed on the
Assets; and

         (c) Seller will use its best efforts to preserve its relationships with
customers or suppliers having business relationships with it.

     4.5  Assets.  Excluding  the  Leased  Real  Property,  Seller  has and will
transfer good and marketable  title to the Assets and upon the  consummation  of
the  transactions  contemplated  hereby,  Buyer will acquire good and marketable
title to all of the  Assets,  free  and  clear of any  Encumbrances  placed  by,
through,  or under thereon by Seller.  The Assets include without limitation all
material  assets  necessary  for  the  conduct  of  the  Business  as  presently
conducted.  Schedule 4.5 contains accurate lists and summary descriptions of all
tangible Assets where the value of an individual item exceeds $1,000 or where an
aggregate of similar items exceeds $ 5,000.  All tangible  assets and properties
which are part of the Assets are in good operating  condition and repair and are
usable in the ordinary  course of business and conform in all material  respects
to all applicable Regulations  (including  Environmental Laws) relating to their
construction, use and operation, except when a failure to conform would not have
a material adverse effect on such asset or property.

     4.6 (Intentionally omitted)

     4.7 Contracts and Commitments.

         (a) Contracts.  Schedule 4.7 sets forth a complete and accurate list of
all Contracts of the following categories:

              (i) Contracts not made in the ordinary course of business;

              (ii)  Employment  contracts  and severance  agreements,  including
without  limitation  Contracts (A) to employ or terminate  executive officers or
other personnel and other contracts with present or former  officers,  directors
or  shareholders  of Seller or (B) that will  result in the  payment  by, or the
creation  of any  Liability  to pay on behalf of Buyer or Seller any  severance,
termination,  "golden  parachute,"  or other similar  payments to any present or
former personnel following termination of employment or otherwise as a result of
the consummation of the transactions contemplated by this Agreement;

              (iii) Labor or union contracts;


                                       11

<PAGE>

              (iv)  Distribution,   franchise,  license,  technical  assistance,
sales,  commission,  consulting,  agency or advertising contracts related to the
Assets or the Business;

              (v) Options with respect to any personal property,  whether Seller
shall be the grantor or grantee thereunder;

              (vi)  Contracts  involving  future  expenditures  or  Liabilities,
actual or potential,  in excess of $10,000 or otherwise material to the Business
or the Assets.

              (vii) Contracts or commitments relating to commission arrangements
with others;

              (viii) Promissory notes, loans, agreements,  indentures, evidences
of indebtedness, letters of credit, guarantees, or other instruments relating to
an  obligation  to pay money,  individually  in excess of or in the aggregate in
excess of $10,000,  whether  Seller shall be the  borrower,  lender or guarantor
thereunder  or whereby  any Assets are  pledged  (excluding  credit  provided by
Seller in the ordinary course of business to purchasers of its products);

              (ix) Contracts containing covenants limiting the freedom of Seller
to engage in any line of business or compete with any person;

              (x) Any Contract with the United States, state or local government
or any agency or department  thereof  involving  expenditures  or Liabilities in
excess of $5,000;

              (xi) Leases of real property;

              (xii)  Leases  of  personal   property  not  cancelable   (without
Liability) within 30 calendar days.

Seller has  delivered to Buyer true,  correct and complete  copies of all of the
Contracts  listed on Schedule 4.7,  including  all  amendments  and  supplements
thereto.

         (b)  Absence  of  Defaults.  All of the  Contracts  and Leases to which
Seller is party and by which any of the Assets is bound are valid,  binding  and
enforceable in accordance with their terms.  Seller has fulfilled,  or taken all
action  necessary  to  enable  it to  fulfill  when  due,  all of  its  material
obligations under each of such Contracts and Leases. To the knowledge of Seller,
after reasonable inquiry, all parties to such Contracts and Leases have complied
in all material  respects with the  provisions  thereof,  no party is in Default
thereunder and no notice of any claim of Default has been given to Seller.  With
respect to any Leases,  Seller has not  received any notice of  cancellation  or
termination  under any option or right reserved to the lessor,  or any notice of
Default, thereunder.

         (c) Product  Warranty.  Seller has committed no act, and there has been
no  omission,  which is  reasonably  likely to result  in, and there has been no
occurrence  which  is  reasonably  likely  to give  rise  to,  material  product
liability  or  material  Liability  for breach of warranty  (whether  covered by
insurance  or not) on the part of Seller,  with  respect to  products  designed,
manufactured,   assembled,  repaired,  maintained,  delivered  or  installed  or
services rendered prior to or on the Closing Date.


                                       12

<PAGE>

         (d) Leases.  Schedule 4.7 also contains a complete and accurate list of
all Leases described in clauses (xi) and (xii), of Section 4.7(a).

     4.8 Permits.  (a)  Schedule 4.8 sets forth a complete  list of all material
Permits used in the operation of the Business.  Seller has, and at all times has
had, all material Permits required under any Regulation (including Environmental
Laws) in the  operation of its Business or in the  ownership of the Assets,  and
owns or possesses such Permits free and clear of all  Encumbrances,  except such
Permits the failure of which to obtain would not have a material  adverse effect
on the Assets or the Business. Seller is not in Default, nor has it received any
notice of any claim of  Default,  with  respect  to any such  Permit.  Except as
otherwise  governed by law, all such Permits are  renewable by their terms or in
the  ordinary  course of  business  without  the need to comply with any special
qualification  procedures or to pay any amounts other than routine  filing fees,
and except as set forth on Schedule 4.8, Seller has no reason to believe,  after
diligent inquiry,  any such Permit will be adversely  affected by the completion
of the  transactions  contemplated  by this  Agreement.  No  present  or  former
shareholder,  director,  officer or employee of Seller or any affiliate thereof,
or any  other  person,  firm,  corporation  or  other  entity,  owns  or has any
proprietary,  financial  or other  interest  (direct or  indirect) in any Permit
which Seller uses.

         (b)  Except  as  disclosed  on  Schedule  4.8  hereto,  no  notice  to,
declaration,  filing or  registration  with,  or Permit  from,  any  domestic or
foreign  governmental  or regulatory  body or authority,  or any other person or
entity,  is required to be made or  obtained  by Seller in  connection  with the
execution,  delivery  or  performance  by  Seller  of  this  Agreement  and  the
consummation of the transactions contemplated hereby.


     4.9  No  Conflict  or  Violation.   Neither  the  execution,   delivery  or
performance  by Seller of this Agreement nor the  consummation  by Seller of the
transactions  contemplated  hereby,  nor  compliance  by Seller  with any of the
provisions  hereof,  will (a)  violate or  conflict  with any  provision  of the
Certificate of Incorporation or Bylaws of Seller, (b) violate, conflict with, or
result in or constitute a Default  under,  or result in the  termination  of, or
accelerate the  performance  required by, or result in a right of termination or
acceleration under, or result in the creation of any Encumbrance upon any of the
Assets under, any of the terms, conditions or provisions of any Contract,  Lease
or Permit, (i) to which Seller is a party or (ii) by which the Assets are bound,
(c) violate any  Regulation or Court Order,  (d) impose any  Encumbrance  on the
Assets.

     4.10 Financial  Statements.  Seller has  heretofore  delivered to Buyer the
Financial  Statements.  The Financial  Statements (a) are in accordance with the
books and records of Seller, (b) have been prepared in accordance with generally
accepted  accounting  principles  consistently  applied  throughout  the periods
covered  thereby,  except as  disclosed  herein,  and (c) fairly  present in all
material respects the consolidated assets,  Liabilities (including all reserves)
and  financial  position of Seller as of the  respective  dates  thereof and the
results of  operations  and  changes in cash  flows for the  periods  then ended
(subject,  in the case of the Interim Financial  Statements,  to normal year-end
adjustments, and except that the Interim Financial Statements do not contain the
footnotes  required  by  GAAP).  The  Year-End  Financial  Statements  have been
examined by Grant Thornton, LLP, independent certified public accountants, whose
report  thereon is included  with such  Year-End  Financial  Statements.  At the
respective dates of the Financial Statements, there were no material Liabilities
of Seller,  which, in accordance with generally accepted accounting  principles,
should have been set forth or reserved for in the  Financial  Statements  or the
notes  thereto,  which  are not  set  forth  or  reserved  for in the  Financial
Statements or the notes thereto.


                                       13

<PAGE>




     4.11  Books and  Records.  Seller has made and kept (and given
Buyer access to) Books and Records and accounts,  which,  in reasonable  detail,
fairly reflect the activities of Seller.  Seller has not engaged in any material
transaction,  maintained any bank account or used any corporate funds except for
transactions,  bank  accounts and funds which have been and are reflected in the
normally maintained books and records of Seller.

     4.12 Litigation.  Except as set forth on Schedule 4.12, or to the knowledge
of Seller,  after diligent inquiry and consultation with qualified  attorneys or
other  necessary  professionals,  there  is no  Action  pending,  threatened  or
anticipated (a) against, related to or affecting (i) Seller, the Business or the
Assets  (including  with respect to  Environmental  Laws),  (ii) any officers or
directors  of  Seller  as such,  or (iii)  any  shareholder  of  Seller  in such
shareholder's  capacity as a shareholder of Seller,  (b) seeking to delay, limit
or enjoin the  transactions  contemplated by this Agreement (c) that involve the
risk of criminal  liability  to Seller,  or (d) in which  Seller is a plaintiff,
including any derivative suits brought by or on behalf of Seller.  Seller is not
in Default  with  respect to or  subject  to any Court  Order,  and there are no
unsatisfied judgments against Seller, the Business or the Assets. There is not a
reasonable likelihood of an adverse determination of any pending Actions.  There
are no Court Orders or agreements with, or liens by, any governmental  authority
or  quasi-governmental  entity relating to any Environmental Law which regulate,
obligate, or bind Seller.

     4.13  Labor  Matters.  Seller  is not a party to any labor  agreement  with
respect  to  its  employees  with  any  labor  organization,   union,  group  or
association  and there are no  employee  unions  or any other  similar  labor or
employee organizations under which the employees of Seller are organized.

     4.14  Liabilities.   Other  than  Excluded   Liabilities,   Seller  has  no
Liabilities due or to become due, except (a) Liabilities  which are set forth or
reserved  for on the  Interim  Balance  Sheet,  which  have  not  been  paid  or
discharged since the Interim Balance Sheet Date, and (b) Liabilities  arising in
the  ordinary  course  of  business,  none  of  which,  individually  or in  the
aggregate,  has or is reasonably likely to have a material adverse effect on the
Business or the Assets.

     4.15  Compliance  with Law.  Seller and the conduct of the  Business are in
compliance  in all  material  respects  with all  Regulations  and Court  Orders
relating to the Assets or the  Business.  Seller has not  received any notice to
the effect that, or otherwise  been advised  that, it is not in such  compliance
with any such Regulations or Court Orders.

     4.16  No  Brokers.  Neither  Seller  nor  any of its  respective  officers,
directors,  employees,  shareholders  or  affiliates  has  employed  or made any
agreement  with any broker,  finder or similar agent or any person or firm which
will  result  in the  obligation  of Buyer or any of its  affiliates  to pay any
finder's fee, brokerage fees or commission or similar payment in connection with
the transactions contemplated hereby.

     4.17 No Other Agreements to Sell the Assets.  Neither Seller nor any of its
officers,  directors,  or  shareholders  have any legal  obligation to any other
person or firm other than the Buyer to sell,  assign,  transfer or effect a sale
of any of the Assets other than inventory in the ordinary course of business, to
sell or effect a sale of the  capital  stock of Seller,  to effect  any  merger,
consolidation, liquidation, dissolution or other reorganization of Seller, or to
enter into any agreement or cause the entering into of an agreement with respect
to any of the foregoing.


                                       14




<PAGE>



     4.18 Proprietary Rights.

         (a) Proprietary Rights. Schedule 4.18 lists all of Seller's Proprietary
Rights.  Schedule 4.18 also sets forth: (i) for each Patent, the number,  normal
expiration  date and  subject  matter for each  country in which such Patent has
been issued,  or, if  applicable,  the  application  number,  date of filing and
subject matter for each country, (ii) for each Trademark, the application serial
number  or  registration  number,  if any,  the class of goods  covered  and the
expiration  date for each country in which a Trademark has been  registered  and
(iii) for each  Copyright,  the number  and date of filing  for each  country in
which a Copyright has been filed and for each unregistered copyright the date of
copyright.  The  Proprietary  Rights listed in the  Disclosure  Schedule are all
those used by Seller in connection with the Business. True and correct copies of
all Patents (including and all pending applications) owned, controlled,  created
or used by or on behalf of Seller or in which Seller has any interest whatsoever
have been provided to Buyer.

         (b)  Royalties  and  Licenses.  Except as set  forth in the  Disclosure
Schedule,  Seller does not have any  obligation to compensate any person for the
use of any such  Proprietary  Rights  nor has  Seller  granted to any person any
license,  option or other  rights to use in any  manner  any of its  Proprietary
Rights, whether requiring the payment of royalties or not.

         (c) Ownership and Protection of Proprietary Rights.  Seller owns or has
a valid right to use each of the Proprietary  Rights, and the Proprietary Rights
will not cease to be valid rights of Seller by reason of the execution, delivery
and performance by Seller of this Agreement or the consummation by Seller of the
transactions  contemplated  hereby. All of the pending Patent  applications have
been  duly  filed.   Seller  has  not  received  any  notice  of  invalidity  or
infringement of any rights of others with respect to the Patents,  Copyrights or
Trademarks.  Seller has taken all  reasonable  and prudent  steps to protect the
Proprietary Rights from infringement by any other person. Except as set forth in
the  Disclosure  Schedule,  no  other  person  (i) has the  right  to use any of
Seller's  Trademarks  on the goods on which  they are now being  used  either in
identical form or in such near resemblance thereto as to be likely, when applied
to the goods of any such person,  to cause  confusion with such Trademarks or to
cause a mistake or to deceive,  (ii) has notified Seller that it is claiming any
ownership of or right to use such  Proprietary  Rights,  or (iii) to the best of
Seller's  Knowledge,  is infringing upon any such Proprietary Rights in any way.
Except as set forth in the Disclosure Schedule,  Seller'S use of the Proprietary
Rights does not conflict  with,  infringe  upon or  otherwise  violate the valid
rights of any third party in or to such  Proprietary  Rights,  and no Action has
been  instituted  against  or  notices  received  by Seller  that are  presently
outstanding  alleging that Seller'S use of the Proprietary Rights infringes upon
or  otherwise  violates  any rights of a third  party in or to such  Proprietary
Rights.  There are not,  and it is  reasonably  expected  that after the Closing
there will not be, any restrictions on Seller's, or Buyer's, as the case may be,
right to sell products  manufactured  by Seller or Buyer, as the case may be, in
connection with the Business.

     4.19 Employee Benefit Plans.

         (a) Buyer is not under any  obligation  for any pension  plan,  welfare
plan,  or  Benefit   Arrangement  as  defined  below.  Seller  shall  be  solely
responsible for all such obligations and liabilities.

             (i)     Benefit Arrangement.  "Benefit Arrangement" shall mean any
employment,  consulting,  severance or other similar  contract,  arrangement  or
policy and each plan,  arrangement  (written  or oral),  program,  agreement  or
commitment providing for insurance coverage

                                       15




<PAGE>



(including   without   limitation  any  self-insured   arrangements),   workers'
compensation,  disability benefits, supplemental unemployment benefits, vacation
benefits,  retirement  benefits,  life, health,  disability or accident benefits
(including without limitation any "voluntary employees' beneficiary association"
as defined  in Section  501(c)(9)  of the Code  providing  for the same or other
benefits) or for deferred compensation,  profit-sharing  bonuses, stock options,
stock  appreciation   rights,  stock  purchases  or  other  forms  of  incentive
compensation or post-retirement insurance, compensation or benefits.

     4.20 Tax Matters.

          (a)  Filing  of  Tax  Returns.   Seller  has  timely  filed  with  the
appropriate  taxing  authorities  all returns in respect of Taxes required to be
filed through the date hereof and will timely file any such returns  required to
be filed on or prior to the Closing  Date.  The  returns  and other  information
filed are complete and accurate in all material respects. Except as specified in
Schedule  4.21,  neither  Seller,  nor any  group of which  Seller  now or was a
member,  has  requested  any  extension  of time  within  which to file  returns
(including without limitation information returns) in respect of any taxes.

          (b)  Payment  of Taxes.  All Taxes,  in  respect of periods  beginning
before the Closing  Date,  have been timely paid,  or will be timely paid, or an
adequate reserve has been established  therefor,  as set forth in the Disclosure
Schedule or the  Financial  Statements,  and Seller  does not have any  material
Liability for Taxes in excess of the amounts so paid or reserves so established.

          (c) Audits,  Investigations or Claims. The consolidated federal income
tax returns of Seller have never been examined by the Internal  Revenue Service.
Except as set forth in the Disclosure  Schedule,  there are no pending or to the
best of Seller's Knowledge,  threatened audits,  investigations or claims for or
relating to any material additional Liability in respect of Taxes, and there are
no matters under  discussion with any  governmental  authorities with respect to
Taxes that in the reasonable  judgment of Seller, or its accountants,  is likely
to result in a material  additional  Liability for Taxes. Except as set forth in
the Disclosure Schedule,  Seller has not been notified that any taxing authority
intends to audit a return for any period.

          (d) Lien.  There are no liens for Taxes (other than for current  Taxes
not yet due and payable) on the Assets.

          (e) Safe Harbor Lease Property. None of the Assets is property that is
required  to be  treated  as being  owned by any other  person  pursuant  to the
so-called safe harbor lease provisions of former Section 168(f)(8) of the Code.

          (f) Security for Tax-Exempt  Obligations.  None of the Assets directly
or indirectly secures any debt the interest on which is tax-exempt under Section
103(a) of the Code.

          (g)  Tax-Exempt Use Property.  None of the Assets is  "tax-exempt  use
property" within the meaning of Section 168(h) of the Code.

          (h) Foreign Person.  Seller is not a person other than a United States
person within the meaning of the Code.


                                       16




<PAGE>



     4.21 Insurance.  Schedule 4.22 contains a complete and accurate list of all
policies or binders of fire, liability,  title, worker's  compensation,  product
liability and other forms of insurance maintained by Seller on the Business, the
Assets or its employee Assets. All insurance coverage  applicable to Seller, the
Business  and  the  Assets  is in full  force  and  effect,  insures  Seller  in
reasonably  sufficient  amounts  against  all risks  with  respect to the Assets
usually insured against by persons operating similar businesses or properties of
similar size in the localities  where such businesses or properties are located,
provides coverage as may be required by applicable Regulation and by any and all
Contracts  to  which  Seller  is a party  and has been  issued  by  insurers  of
recognized  responsibility.  There is no Default under any such coverage nor has
there  been any  failure  to give  notice or  present  any claim  under any such
coverage in a due and timely fashion.  There are no outstanding  unpaid premiums
except in the  ordinary  course of  business  and no notice of  cancellation  or
nonrenewal of any such coverage has been received.

     4.22 (Intentionally omitted)

     4.23 Inventory. Schedule 4.23 contains a complete list of all Inventory set
forth on the Interim Balance Sheet.

     4.24 Purchase Commitments and Outstanding Bids. As of the date of this 
Agreement,  the aggregate of all accepted and unfulfilled orders for the sale of
merchandise  entered into by Seller is less than  $10,000,  and the aggregate of
all orders or commitments for the purchase of supplies by Seller does not exceed
$10,000, all of which orders and commitments were made in the ordinary course of
business.  As of the date of this Agreement,  there are no claims against Seller
to return merchandise by reason of alleged overshipments,  defective merchandise
or otherwise, or of merchandise in the hands of customers under an understanding
that  such  merchandise  would  be  returnable.  There  is no  outstanding  bid,
proposal,  Contract or unfilled  order which relates to the Assets which will or
would,  if accepted,  have a material  adverse  effect,  individually  or in the
aggregate, on the Business or the Assets.

     4.25  Customers,  Distributors  and  Suppliers.  Schedule 4.25 sets forth 
a complete  and  accurate  list of the names and  addresses  of Seller's (i) ten
largest customers, distributors and other agents and representatives showing the
approximate  total sales in dollars by Seller to each such customer during 1996;
and (ii) ten  largest  suppliers  showing the  approximate  total  purchases  in
dollars by Seller from each such supplier during the 1996 fiscal year. Since the
Interim  Balance  Sheet Date,  there has been no adverse  change in the business
relationship  of Seller with any  customer,  distributor  or  supplier  named on
Schedule 4.25.

     4.26 Compliance With Environmental Laws.

          (a) Definitions.  The following terms, when used in this Section 4.26,
shall have the following  meanings.  Any of these terms may,  unless the context
otherwise  requires,  used  in the  singular  or  the  plural  depending  on the
reference.

               (i)  "Release"  shall mean and  include  any  spilling,  leaking,
pumping,  pouring,  emitting,  emptying,   discharging,   injecting,   escaping,
leaching,  dumping or disposing  into the  environment  or the  workplace of any
Hazardous Substance, and otherwise as defined in any Environmental Law.


                                       17




<PAGE>



               (ii)   "Hazardous   Substance"   shall   mean   any   pollutants,
contaminants,   chemicals,  waste  and  any  toxic,  infectious,   carcinogenic,
reactive,  corrosive,  ignitible or flammable  chemical or chemical  compound or
hazardous substance,  material or waste, whether solid, liquid or gas, including
without  limitation  any  quantity of asbestos in any form,  urea  formaldehyde,
PCB's,  radon gas, crude oil or any fraction thereof,  all forms of natural gas,
petroleum products or by-products or derivatives,  radioactive substance,  waste
waters, sludges, slag and any other substance, material or waste that is subject
to regulation, control or remediation under any Environmental Laws.

               (iii)  "Environmental  Laws"  shall  mean all  Regulations  which
regulate or relate to the  protection or clean-up of the  environment,  the use,
treatment,  storage,  transportation,   generation,   manufacture,   processing,
distribution,  handling or disposal of, or emission,  discharge or other release
or  threatened   release  of,  Hazardous   Substances  or  otherwise   dangerous
substances,  wastes, pollution or materials (whether, gas, liquid or solid), the
preservation  or protection  of waterways,  groundwater,  drinking  water,  air,
wildlife, plants or other natural resources, or the health and safety of persons
or property, including without limitation protection of the health and safety of
employees. Environmental Laws shall include without limitation the Federal Water
Pollution  Control Act,  Resource  Conservation  & Recovery Act ("RCRA"),  Clean
Water Act, Safe Drinking Water Act, Atomic Energy Act,  Occupational  Safety and
Health  Act,  Toxic  Substances  Control  Act,  Clean  Air  Act,   Comprehensive
Environmental  Response,  Compensation  and Liability Act ("CERCLA"),  Hazardous
Materials  Transportation  Act and all  analogous or related  federal,  state or
local law, each as amended.

               (iv)  "Environmental  Conditions" means the introduction into the
environment  of any pollution,  including  without  limitation any  contaminant,
irritant or  pollutant  or other  Hazardous  Substance  (whether or not upon any
Facility or Former  Facility or other property and whether or not such pollution
constituted at the time thereof a violation of any Environmental Law as a result
of any Release of any kind whatsoever of any Hazardous Substance) as a result of
which  Seller has or may  become  liable to any person or by reason of which any
Facility, former facility or any of the Assets may suffer or be subjected to any
lien.

          (b)  Facilities.  The Facilities are, and at all times have been, when
leased or operated by Seller,  leased and operated in compliance in all material
respects with all Environmental  Laws and in a manner that will not give rise to
any Liability under any Environmental Laws.

          (c) Environmental Conditions. To the best of Seller's knowledge, after
reasonable inquiry, there are no present or past Environmental Conditions in any
way relating to the Business or at any Facility.

         4.27 (Intentionally omitted)


                                    ARTICLE V

                     REPRESENTATIONS AND WARRANTIES OF BUYER


                                       18




<PAGE>



         Buyer  hereby  represents  and  warrants  to Seller as  follows,  which
representations  and warranties  are, as of the date hereof,  and will be, as of
the Closing Date, true and correct, to Seller as follows:

     5.1 Organization of Buyer.  Buyer is a corporation duly organized,  validly
existing and in good standing under the laws of the State of Delaware.

     5.2 Authorization.  Buyer has all requisite  corporate power and authority,
and has taken all  corporate  action  necessary,  to execute  and  deliver  this
Agreement  and  the  Ancillary   Agreements,   to  consummate  the  transactions
contemplated  hereby and thereby and to perform its  obligations  hereunder  and
thereunder.  The  execution  and delivery of this  Agreement  and the  Ancillary
Agreement  by  Buyer  and  the   consummation  by  Buyer  of  the   transactions
contemplated  hereby  and  thereby  have  been  duly  approved  by the  board of
directors  of Buyer.  No other  corporate  proceedings  on the part of Buyer are
necessary  to authorize  this  Agreement  and the  Ancillary  Agreement  and the
transactions  contemplated  hereby and  thereby.  This  Agreement  has been duly
executed  and  delivered  by Buyer and is, and upon  execution  and delivery the
Ancillary  Agreement  will be, legal,  valid and binding  obligations  of Buyer,
enforceable against Buyer in accordance with their respective terms.

     5.3  No  Brokers.  Neither  Buyer  nor  any  of  its  officers,  directors,
employees,  shareholders  or affiliates  has employed or made any agreement with
any broker,  finder or similar  agent or any person or firm which will result in
the  obligation of Seller to pay any finder's fee,  brokerage fees or commission
or similar payment in connection with the transactions contemplated hereby.

     5.4  No  Conflict  or  Violation.   Neither  the  execution,   delivery  or
performance  by Buyer of this  Agreement  nor the  consummation  by Buyer of the
transactions  contemplated  hereby,  nor  compliance  by  Buyer  with any of the
provisions  hereof,  will (a)  violate or  conflict  with any  provision  of the
Certificate of Incorporation or Bylaws of Buyer, or (b) violate,  conflict with,
constitute a Default or result in the  acceleration  or termination of rights or
creation of any Encumbrance under the provisions of any Contract, lease, Permit,
Regulation or Court Order to which Buyer is subject or by which it or its assets
are bound,  in each case except as would not  materially  and adversely  affect,
limit or delay the ability of Buyer to consummate the transactions  contemplated
by this Agreement.

     5.5  Litigation.  To the  knowledge of Buyer,  after  diligent  inquiry and
consultation with qualified attorneys or other necessary professionals, there is
no Action pending,  threatened or anticipated  against,  related to or affecting
(i)  Buyer,  (ii) any  officers  or  directors  of Buyer as such,  or (iii)  any
shareholder of Buyer in such  shareholder's  capacity as a shareholder of Buyer,
in each case except as would not materially and adversely affect, limit or delay
the  ability  of Buyer  to  consummate  the  transactions  contemplated  by this
Agreement.

     5.6 Purchase  Price in Cash.  Buyer has on hand and will have at Closing in
cash one million dollars ($1,000,000) for the full amount of the Purchase Price.

                                   ARTICLE VI

                          COVENANTS OF SELLER AND BUYER

            Seller and Buyer each covenant with the other as follows:

                                       19




<PAGE>




     6.1  Further  Assurances.  Upon the terms  and  subject  to the  conditions
contained herein,  the parties agree, both before and after the Closing,  (i) to
use all reasonable  efforts  without the expenditure of material funds, to take,
or cause to be taken,  all  actions  and to do, or cause to be done,  all things
necessary, proper or advisable to consummate and make effective the transactions
contemplated  by this Agreement,  (ii) to execute any documents,  instruments or
conveyances of any kind which may be reasonably  necessary or advisable to carry
out any of the transactions  contemplated hereunder, and (iii) to cooperate with
each other in connection with the foregoing. Without limiting the foregoing, the
parties agree to use their  respective  best efforts (A) to obtain all necessary
waivers,  consents and approvals  from other parties to the Contracts and Leases
to be assumed by Buyer; provided, however that neither Seller nor Buyer shall be
required to make any payments,  commence litigation or agree to modifications of
the terms  thereof in order to obtain any such  waivers,  consents or approvals;
and (B) to obtain all necessary Permits as are required to be obtained under any
Regulations.

     6.2  Notification  of Certain  Matters.  From the date  hereof  through the
Closing,  Seller  and Buyer  shall  give  prompt  notice to the other of (a) the
occurrence,  or failure to occur, of any event which occurrence or failure would
be likely to cause any  representation  or warranty  of Seller or Buyer,  as the
case may be, contained in this Agreement or in any exhibit or schedule hereto to
be untrue or inaccurate in any material respect.

     6.3 Investigation by Buyer.

          From the date hereof through the Closing Date:

          (a) Seller shall, and shall cause its officers,  directors,  employees
and agents to afford the Representatives of Buyer and its affiliates  reasonable
access during normal  business hours and on reasonable  notice to the Assets for
the purpose of inspecting the same, and to the officers, attorneys, accountants,
properties,  Books and Records and Contracts of Seller,  and shall furnish Buyer
and its Representatives at Buyer's cost and expense all financial, operating and
other data and information as Buyer or its affiliates,  through their respective
Representatives, may reasonably request.

     6.4 Conduct of Business.  From the date hereof through the Closing,  Seller
shall not,  except as  specifically  contemplated  by this  Agreement or as
consented to by Buyer in writing:

          (a) (Intentionally omitted)

          (a) enter into,  extend,  materially  modify,  terminate  or renew any
Contract  related to the Business or Assets being  required by Buyer,  except in
the ordinary course of business;

          (b)  sell,  assign,  transfer,  convey,  lease,  mortgage,  pledge  or
otherwise  dispose of or encumber any of the Assets,  or any interests  therein,
except in the ordinary course of business; 

               (i) (Intentionally omitted)

          (c) acquire by merger or  consolidation  with, or merge or consolidate
with, or purchase  substantially  all of the assets of, or otherwise acquire any
material  assets or business of any  corporation,  partnership,  association  or
other business organization or division thereof;

                                       20




<PAGE>




          (d) (Intentionally omitted);

          (e) fail to pay its accounts payable and any debts owed or obligations
due to it, or pay or discharge when due any Liabilities,  in the ordinary course
of business; or

          (f) fail to maintain the Assets in  substantially  their current state
of repair, excepting normal wear and tear;

          (g) fail to  comply  in any  material  respect  with  all  Regulations
applicable to it, the Assets and the Business;

          (h)   intentionally   do  any  other  act   which   would   cause  any
representation or warranty of Seller in this Agreement to be or become untrue in
any material respect;

          (i) fail to use its best  efforts  to  preserve  the  goodwill  of the
Business  and the  favorable  attitude of the  Company's  customers  towards the
Company's Business and products,  it being understood,  however, that Seller has
ceased to develop or sell any of its  products or to maintain  warranty  support
for any of its products,  and has terminated all of its programming,  marketing,
warranty and financial personnel, effective June 1997; or

          (j) enter into any agreement, or otherwise become obligated, to do any
action prohibited hereunder.

     6.5 Employee Matters.

          (a) Buyer  shall  extend  offers of  employment  to those of  Seller's
employees  whom it desires to hire (such  employees who accept Buyer's offer are
hereinafter  referred to as the "Rehired  Employees"),  which offers shall be on
terms and conditions which Buyer shall determine in its sole discretion.  Seller
shall terminate the employment of all Rehired Employees prior to the Closing and
shall  cooperate with and use its best efforts to assist Buyer in its efforts to
secure  satisfactory  employment  arrangements with those employees of Seller to
whom Buyer makes offers of employment.

          (b) Nothing  contained in this Agreement shall confer upon any Rehired
Employee any right with respect to continuance of employment by Buyer, nor shall
anything herein interfere with the right of Buyer to terminate the employment of
any of the Rehired  Employees at any time,  with or without  cause,  or restrict
Buyer in the exercise of its independent  business  judgment in modifying any of
the terms and conditions of the employment of the Rehired Employees.

          (c) Seller shall not, directly or indirectly, hire or offer employment
to any  employee of Seller  whose  employment  is  continued  by Buyer after the
Closing  Date or any  employee of Buyer or any  successor  or affiliate of Buyer
which is engaged in the Business,  unless Buyer first  terminates the employment
of such  employee or gives its written  consent to such  employment  or offer of
employment.


                                   ARTICLE VII

                       CONDITIONS TO SELLER'S OBLIGATIONS

                                       21




<PAGE>




         The obligations of Seller to consummate the  transactions  provided for
hereby are subject,  in the  discretion of Seller,  to the  satisfaction,  on or
prior to the Closing Date, of each of the following conditions, any of which may
be waived by Seller:

     7.1  Representations,  Warranties and Covenants.  All  representations  and
warranties of Buyer contained in this Agreement shall be true and correct in all
material  respects at and as of the date of this  Agreement and at and as of the
Closing  Date,  except as and to the extent that the facts and  conditions  upon
which such  representations  and warranties are based are expressly  required or
permitted to be changed by the terms hereof,  and Buyer shall have performed and
satisfied in all material respects all agreements and covenants  required hereby
to be performed by it prior to or on the Closing Date.

     7.2 Consents;  Regulatory Compliance and Approval. All consents,  approvals
and waivers from governmental  authorities and other parties necessary to permit
Seller to transfer  the Assets to Buyer as  contemplated  hereby shall have been
obtained.

     7.3 No Actions or Court Orders. No Action by any governmental  authority or
other  person shall have been  instituted  or  threatened  which  questions  the
validity  or legality of the  transactions  contemplated  hereby and which could
reasonably be expected to damage Seller if the transactions  contemplated hereby
are consummated.

     7.4 Opinion of Counsel.  Buyer shall have delivered to Seller an opinion of
the  General  Counsel  of  Buyer,  dated  as of the  Closing  Date,  in form and
substance reasonably satisfactory to Seller, to the effect that:

         (a) Incorporation.  Buyer is a corporation duly  incorporated,  validly
existing and in good standing under the laws of the State of Delaware;

         (b) Corporate  Power and Authority.  Buyer has the necessary  corporate
power and authority to enter into this Agreement and the Ancillary Agreement and
to consummate the transactions contemplated hereby and thereby;

         (c) Corporate Action and  Enforceability.  The execution,  delivery and
performance  of this  Agreement and the  Ancillary  Agreement by Buyer have been
duly authorized by all necessary  corporate  action of Buyer, and this Agreement
and the Ancillary  Agreement have been duly executed and delivered by Buyer, and
with appropriate and customary exceptions,  constitute legally valid and binding
obligations of Buyer, enforceable against Buyer in accordance with their terms.

         (d) No Breach of Contracts.  Neither the execution and delivery of this
Agreement or the Ancillary  Agreements by Buyer nor the consummation by Buyer of
the transactions contemplated hereby or thereby will (i) violate the Articles of
Incorporation or Bylaws of Buyer, or (ii) to the best knowledge of such counsel,
violate any Court Order applicable to Buyer; and

         (e) No Violation of Law.  Neither the execution and performance of this
Agreement or the Ancillary  Agreement by Buyer nor the  consummation by Buyer of
the  transactions  contemplated  hereby or thereby  will  violate or result in a
failure to comply with any Regulation or Court Order, applicable to Buyer.


                                       22




<PAGE>



     7.5 Certificates.  Buyer shall furnish Seller with such certificates of its
officers and others to evidence compliance with the conditions set forth in this
Article VII as may be reasonably requested by Seller.

     7.6 Corporate Documents.  Seller shall have received from Buyer resolutions
adopted  by the  board of  directors  of Buyer  approving  this  Agreement,  the
Ancillary  Agreement  and  the  transactions  contemplated  hereby  or  thereby,
certified by Buyer's corporate secretary.

     7.7 Assumption Document. Buyer shall have executed the Assumption Document.

     7.8  Ancillary  Agreements.  Buyer shall have  executed and  delivered  the
Ancillary Agreement.


                                  ARTICLE VIII

                        CONDITIONS TO BUYER'S OBLIGATIONS

         The  obligations of Buyer to consummate the  transactions  provided for
hereby are subject, in the discretion of Buyer, to the satisfaction, on or prior
to the Closing Date, of each of the  following  conditions,  any of which may be
waived by Buyer:

     8.1  Representations,  Warranties and Covenants.  All  representations  and
warranties of Seller  contained in this  Agreement  shall be true and correct in
all material  respects at and as of the date of this  Agreement and at and as of
the Closing Date, except as and to the extent that the facts and conditions upon
which such  representations  and warranties are based are expressly  required or
permitted to be changed by the terms hereof, and Seller shall have performed and
satisfied in all material respects all agreements and covenants  required hereby
to be performed by it prior to or on the Closing Date.

     8.2 Consents;  Regulatory Compliance and Approval.  All Permits,  consents,
approvals and waivers from governmental authorities, or pursuant to the Contract
Rights,  and other  parties  necessary  to permit  Buyer to purchase  the Assets
pursuant to this Agreement,  shall have been obtained. Buyer shall be reasonably
satisfied  that all approvals  required  under any  Regulations to carry out the
transactions  contemplated  by this Agreement  shall have been obtained and that
the  parties  shall  have  complied  with  all  Regulations  applicable  to  the
transactions contemplated by this Agreement.

     8.3 No Actions or Court Orders. No Action by any governmental  authority or
other  person shall have been  instituted  or  threatened  which  questions  the
validity  or legality of the  transactions  contemplated  hereby and which could
reasonably be expected to damage Buyer, or the Assets or the Business materially
if the  transactions  contemplated  hereby are  consummated,  including  without
limitation any material  adverse effect on the right or ability of Buyer to own,
operate,  possess or transfer the Assets  after the Closing.  There shall not be
any  Regulation  or Court Order that makes the purchase and sale of the Business
or the Assets contemplated hereby illegal or otherwise prohibited.


                                       23




<PAGE>



     8.4 Opinion of Counsel.  Seller shall have delivered to Buyer an opinion of
counsel  to  Seller,  dated  as of the  Closing  Date,  in  form  and  substance
reasonably satisfactory to Buyer, to the effect that:

         (a) Incorporation.  Seller is a corporation duly incorporated,  validly
existing and in good standing under the laws of the State of Delaware;

         (b) Corporate Power and Authority.  Seller has the necessary  corporate
power and authority to enter into this Agreement and the Ancillary Agreement and
to consummate the transactions  contemplated hereby and thereby;  and Seller has
all material Permits,  licenses,  franchises and other authority  required under
federal and applicable state law to conduct the Business as not being conducted,
and Seller has the necessary  corporate  power and  authority to own,  lease and
operate  the Assets and its other  properties  and to conduct  the  Business  as
presently conducted;

         (c) Corporate Action and  Enforceability.  The execution,  delivery and
performance  of this  Agreement and the Ancillary  Agreement by Seller have been
duly authorized by all necessary  corporate action of Seller, and this Agreement
and the Ancillary Agreement have been duly executed and delivered by Seller, and
any approval of the stockholders of Seller which is required have been obtained,
and with appropriate and customary exceptions, this Agreement and each Ancillary
Agreement   constitute   legally  valid  and  binding   obligations  of  Seller,
enforceable against Seller in accordance with their respective terms.

         (d) No Breach of Contracts.  Neither the execution and delivery of this
Agreement or the Ancillary Agreement by Seller nor the consummation by Seller of
the transactions contemplated hereby or thereby will (i) violate the Articles of
Incorporation  or  Bylaws  of  Seller,  or (ii) to the  best  knowledge  of such
counsel, violate any Court Order applicable to Seller;

         (e) No Violation of Law.  Neither the execution and performance of this
Agreement or the  Ancillary  Agreements  by Seller nor the  consummation  of the
transactions  contemplated hereby or thereby will violate or result in a failure
to comply with any Regulation or Court Order, applicable to the Business; and no
Permit of, or filing with, any federal,  New York State,  or Delaware  Corporate
Law  governmental  authority is required for the  execution and delivery of this
Agreement or the Ancillary  Agreement by Seller or the consummation by Seller of
the transactions  contemplated  hereby and thereby,  except as set forth in this
Agreement,  the  Disclosure  Schedule,  the  exhibits  hereto  or the  Ancillary
Agreement;

         (f) Transfer and Assignment. The documents to be delivered by Seller at
the Closing to effect the transfer and  assignment to Buyer of all right,  title
and interest in and to the Assets are in form legally sufficient to do so.

     8.5 Certificates.  Seller shall furnish Buyer with such certificates of its
officers and others to evidence compliance with the conditions set forth in this
Article VIII as may be reasonably requested by Buyer.

     8.6 Material Changes. Since the Interim Balance Sheet Date, there shall not
have been any  material  adverse  change  with  respect to the  Business  or the
Assets, except as contemplated by this Agreement.


                                       24




<PAGE>



     8.7 Corporate Documents.  Buyer shall have received from Seller resolutions
adopted by the board of directors of Seller  approving  this  Agreement  and the
Ancillary  Agreement  and the  transactions  contemplated  hereby  and  thereby,
certified by Seller's corporate secretary, as applicable.

     8.8  Conveyancing  Documents;  Release of  Encumbrances.  Seller shall have
executed and delivered  each of documents  described in Section 3.2 hereof so as
to effect the transfer and assignment to Buyer of all right,  title and interest
in and to the Assets and Seller shall have filed (where necessary) and delivered
to Buyer all  documents  necessary to release the Assets from all  Encumbrances,
which documents shall be in a form reasonably  satisfactory to Buyer's  counsel.
Seller  shall have  obtained,  prior to the  execution  of this  Agreement,  the
consent required to assign to Buyer all rights,  title and interest of Seller in
the Cold Spring Harbor Laboratory  Exclusive  Know-How License dated December 1,
1983, including any amendments thereto.

     8.9 Name  Change.  Seller  shall have filed an amendment to its Articles of
Incorporation  to  change  its  corporate  name so as not to  include  the words
"Protein  Databases  or PDI" or any  other  name or mark  that  has  such a near
resemblance  thereto  as may be  likely to cause  confusion  or  mistake  to the
public,  or to otherwise  deceive the public.  Such amendment shall be in a form
acceptable  for filing with the  Secretary  or other  appropriate  office of the
State of Delaware.

     8.10 Other Agreements and Actions. Seller shall have executed and delivered
the Ancillary  Agreements in the form attached as an exhibit hereto. Buyer shall
have  entered  into  employment  agreement  with Mr. John  Randall,  as attached
hereto, on such terms as may be mutually agreeable to Buyer and such parties and
such employment  agreements shall be in full force and effect as of the Closing.
Mr. John Randall  shall be in the employ of Buyer prior to the execution of this
Agreement and shall not have  terminated  such  employment  with Buyer as of the
Closing date other than on account of the breach of his Employment  Agreement by
Buyer.


     8.12 (Intentionally omitted)


                                   ARTICLE IX

                      RISK OF LOSS; CONSENTS TO ASSIGNMENT

     9.1 Risk of Loss. From the date hereof until the Closing,  all risk of loss
or damage to the property  included in the Assets shall be borne by Seller,  and
thereafter shall be borne by Buyer. If any portion of the Assets is destroyed or
damaged by fire or any other cause on or prior to the Closing  Date,  other than
use, wear or loss in the ordinary course of business,  Seller shall give written
notice to Buyer as soon as practicable  after,  but in any event within five (5)
calendar  days of,  discovery  of such  damage  or  destruction,  the  amount of
insurance,  if any, covering such Assets and the amount, if any, which Seller is
otherwise  entitled to receive as a  consequence.  Prior to the  Closing,  Buyer
shall have the option,  which  shall be  exercised  by written  notice to Seller
within ten (10) calendar  days after  receipt of Seller's  notice or if there is
not ten (10) calendar  days prior to the Closing  Date,  as soon as  practicable
prior to the Closing Date, of (a)  accepting  such Assets in their  destroyed or
damaged  condition in which event Buyer shall be entitled to the proceeds of any
insurance  or other  proceeds  payable  with  respect  to such  loss and to such
indemnification for any uninsured portion of such loss pursuant to Section 10.3,
and the full Purchase Price shall be paid for

                                       25




<PAGE>



such Assets,  (b) excluding such Assets from this Agreement,  in which event the
Purchase  Price  shall be reduced by the amount  allocated  to such  Assets,  as
mutually  agreed  between  the  parties or (c)  terminating  this  Agreement  in
accordance  with Section  11.1.  If Buyer  accepts  such Assets,  then after the
Closing, any insurance or other proceeds shall belong, and shall be assigned to,
Buyer without any reduction in the Purchase  Price;  otherwise,  such  insurance
proceeds shall belong to Seller.

     9.2  Consents to  Assignment.  Anything in this  Agreement  to the contrary
notwithstanding,  this Agreement shall not constitute an agreement to assign any
Contract,  Lease, Permit or any claim or right or any benefit arising thereunder
or resulting therefrom if an attempted  assignment thereof,  without the consent
of a third  party  thereto,  would  constitute  a Default  thereof or in any way
adversely  affect  the  rights  of  Buyer  thereunder.  If such  consent  is not
obtained,  or if an attempted  assignment  thereof would be ineffective or would
affect the rights  thereunder  so that Buyer would not receive all such  rights,
Seller will cooperate with Buyer,  in all  reasonable  respects,  but at Buyer's
sole cost and expense, to provide to Buyer the benefits under any such Contract,
Lease,  Permit or any claim or right,  including without limitation  enforcement
for the  benefit of Buyer of any and all rights of Seller  against a third party
thereto  arising  out of the  Default or  cancellation  by such  third  party or
otherwise.  Nothing in this Section 9.2 shall affect  Buyer's right to terminate
this  Agreement  under  Sections  8.2 and 11.1 in the event that any  consent or
approval to the transfer of any Asset is not obtained.


                                    ARTICLE X

                           ACTIONS BY SELLER AND BUYER
                                AFTER THE CLOSING

     10.1 Books and Records; Tax Matters.

         (a) Books and Records.  Each party agrees that it will  cooperate  with
and make  available to the other party,  during normal  business  hours,  and on
reasonable  notice,  all Books and Records,  information and employees  (without
substantial  disruption of employment) retained and remaining in existence after
the Closing which are necessary or useful in connection  with the preparation of
any tax  returns  or any tax  inquiry,  audit,  investigation  or  dispute,  any
litigation  or  investigation  or any other matter  requiring any such Books and
Records, information or employees for any reasonable business purpose. The party
requesting any such Books and Records,  information or employees  shall bear all
of the out-of-pocket costs and expenses (including without limitation attorneys'
fees, but excluding reimbursement for salaries and employee benefits) reasonably
incurred in connection  with  providing  such Books and Records,  information or
employees.

         (b) Cooperation and Records Retention.  Seller and Buyer shall (i) each
provide the other with such  assistance as may reasonably be requested by any of
them  in  connection  with  the  preparation  of any  return,  audit,  or  other
examination by any taxing  authority or judicial or  administrative  proceedings
relating to Liability for Taxes, (ii) each retain and provide the other with any
records or other  information  that may be  relevant  to such  return,  audit or
examination,  proceeding or determination, and (iii) each provide the other with
any  final  determination  of any such  audit  or  examination,  proceeding,  or
determination  that affects any amount required to be shown on any tax return of
the other for any period.


                                       26




<PAGE>



         (c) Payment of  Liabilities.  Following the Closing Date,  Seller shall
pay when due all of the debts and Liabilities of Seller, including any Liability
for Taxes,  other than Assumed  Liabilities;  provided,  however,  this covenant
shall not apply to that  portion (or all) of any debt that Seller is  contesting
in good faith.

     10.2  Survival of  Representations,  Etc. All of the  representations,
warranties,  covenants and agreements made by each party in this Agreement or in
any attachment, Exhibit, the Disclosure Schedule, certificate,  document or list
delivered  by any such party  pursuant  hereto  shall  survive the Closing for a
period  of (and  claims  based  upon  or  arising  out of such  representations,
warranties, covenants and agreements may be asserted at any time before the date
which shall be) eleven months following the Closing.  Each party hereto shall be
entitled to rely upon the  representations and warranties of the other party set
forth in this  Agreement.  Buyer's  due  diligence  review  shall have no effect
whatsoever on the liability of Seller to Buyer under this Agreement or otherwise
for breach of any representation,  warranty or covenant of Seller hereunder. The
termination  of the  representations  and warranties  provided  herein shall not
affect  the  rights of a party in  respect  of any Claim made by such party in a
writing  received by the other party prior to the  expiration of the  applicable
survival period provided herein.

                  10.3     Indemnifications.

         (a) By Seller.  Seller shall  indemnify,  save and hold harmless Buyer,
its affiliates and subsidiaries,  and its and their respective  Representatives,
from and against any and all costs,  losses,  Taxes,  Liabilities,  obligations,
damages, lawsuits,  deficiencies,  claims, demands, and expenses (whether or not
arising out of  third-party  claims),  including  without  limitation  interest,
penalties,  reasonable  costs  of  mitigation,  losses  in  connection  with any
Environmental  Law  (including  without  limitation  any  clean-up  or  remedial
action),   lost  profits  and  other  losses  resulting  from  any  shutdown  or
curtailment of operations,  damages to the environment,  attorneys' fees and all
amounts paid in  investigation,  defense or  settlement  of any of the foregoing
(herein, "Damages"),  actually suffered by Buyer as a result of (i) any material
breach  of  any   representation   or   warranty  or  the   inaccuracy   of  any
representation,  made by Seller in or pursuant to this  Agreement  that directly
results in a material  diminution in value of the Assets or Business  Agreement;
(ii) any  material  breach of any  covenant  or  agreement  made by Seller in or
pursuant to this  Agreement  that directly  results in a material  diminution in
value of the Assets or Business;  (iii) any material Excluded  Liability or (iv)
any  Liability  imposed upon Buyer by reason of Buyer's  status as transferee of
the  Business  or the  Assets;  provided,  however,  that  Seller  shall  not be
responsible  to Buyer under this Section 10.3 (a) unless the  aggregate  Damages
are $14,500, and in the event that such Damages exceed $14,500,  Seller shall be
responsible for all Damages.

         (b) By Buyer.  Buyer shall  indemnify and save and hold harmless Seller
from and against any and all Damages  incurred in connection  with,  arising out
of,  resulting  from or  incident  to (i) any  breach of any  representation  or
warranty or the inaccuracy of any  representation,  made by Buyer in or pursuant
to this Agreement; (ii) any breach of any covenant or agreement made by Buyer in
or pursuant to this Agreement;  or (iii) from and after the Closing, any Assumed
Liability.

         (c)  Cooperation.   The  indemnified   party  shall  cooperate  in  all
reasonable  respects  with the  indemnifying  party  and such  attorneys  in the
investigation,  trial and  defense  of such  lawsuit  or action  and any  appeal
arising therefrom; provided, however, that the indemnified party may, at its own
cost,  participate  in the  investigation,  trial and defense of such lawsuit or
action and

                                       27




<PAGE>



any appeal arising therefrom. The parties shall cooperate with each other in any
notifications to insurers.

         (d) Defense of Claims. If a claim for Damages (a "Claim") is to be made
by a party entitled to indemnification hereunder against the indemnifying party,
the party  claiming  such  indemnification  shall give written  notice (a "Claim
Notice")  to the  indemnifying  party as soon as  practicable  after  the  party
entitled to indemnification  becomes aware of any fact, condition or event which
may give rise to  Damages  for which  indemnification  may be sought  under this
Section  10.3. If any lawsuit or  enforcement  action is filed against any party
entitled to the benefit of indemnity hereunder,  written notice thereof shall be
given to the  indemnifying  party as promptly as  practicable  (and in any event
within fifteen (15) calendar days after the service of the citation or summons).
The failure of any indemnified  party to give timely notice  hereunder shall not
affect  rights  to  indemnification  hereunder,  except to the  extent  that the
indemnifying party demonstrates actual damage caused by such failure. After such
notice,  the indemnified party shall be entitled,  if it so elects,  (i) to take
control of the  defense and  investigation  of such  lawsuit or action,  (ii) to
employ  and engage  attorneys  of its own choice  reasonably  acceptable  to the
indemnifying  party to handle and defend the same,  and (iii) to  compromise  or
settle such claim,  which  compromise or settlement  shall be made only with the
written consent of the indemnifying  party,  such consent not to be unreasonably
withheld or delayed.  In the event that the indemnified party has not elected to
assume the defense  and  investigation  of any lawsuit or action  within 30 days
after the  service of the  citation  or  summons,  then at any time  thereafter,
unless the  indemnified  party shall have previously  assumed such defense,  the
indemnifying   party   shall  have  the  right  to  assume   such   defense  and
investigation, in which case the indemnifying party shall not be responsible for
any  costs  and  expenses  of  the  indemnified  party  thereafter  incurred  in
connection with the defense or investigation  of such lawsuit or action.  If the
indemnifying  party  shall  assume  the  defense of any  lawsuit or action,  the
indemnifying  party shall not settle or compromise such lawsuit or action except
in such manner as will  provide a full and complete  release of the  indemnified
party. The  indemnifying  party shall be liable for any settlement of any action
effected  pursuant to and in accordance with this Section 10.3 and for any final
judgment (subject to any right of appeal),  and the indemnifying party agrees to
indemnify and hold harmless an indemnified party from and against any Damages by
reason of such settlement or judgment.

         (e) (Intentionally omitted)

         (f) (Intentionally omitted)

         (g) Brokers and  Finders.  Pursuant to the  provisions  of this Section
10.3,  each of Buyer and Seller shall  indemnify,  hold  harmless and defend the
other  party from the payment of any and all  broker's  and  finder's  expenses,
commissions,  fees or other  forms of  compensation  which may be due or payable
from or by the  indemnifying  party,  or may have been earned by any third party
acting on behalf of the  indemnifying  party in connection  with the negotiation
and  execution  hereof and the  consummation  of the  transactions  contemplated
hereby.

     10.4 Bulk Sales.  It may not be  practicable to comply or attempt to comply
with the  procedures of the "Bulk Sales Act" or similar law of any or all of the
states in which the  Assets  are  situated  or of any other  state  which may be
asserted to be applicable to the transactions contemplated hereby.  Accordingly,
to induce Buyer to waive any requirements for compliance with any or all of such
laws, Seller hereby agrees that the indemnity  provisions of Section 10.3 hereof
shall apply to any Damages of Buyer arising out of or resulting from the failure
of Seller or Buyer to comply with any such laws.

                                       28




<PAGE>




     10.5 Taxes.  Except for sales  taxes on the  Purchased  Assets,  subject to
Section 2.8, Seller shall pay, or cause to be paid, when due all Taxes for which
Seller is or may be liable or that are or may become payable with respect to all
taxable periods ending on or prior to the Closing Date.

     10.6 Name. Seller hereby grants to Buyer, effective as of the Closing Date,
the right for a period of six months to use the name "Protein  Databases,  Inc.,
or PDI" on  stationery,  invoices,  and the like,  pursuant to a  non-exclusive,
royalty free license in favor of Seller in connection with the winding up of the
Business and the liquidation of Seller.


     10.7 Holdback.  Buyer and Seller shall enter into an Escrow Indemnification
Agreement,  by and among  Buyer,  Seller and the  Escrow  Agent  named  therein,
substantially  in the form of Exhibit K attached  hereto.  The parties agree and
acknowledge  that the Holdback Amount shall not be Buyer's  exclusive  method of
receiving indemnification from Seller pursuant to this Article X.


                                   ARTICLE XI

                                  MISCELLANEOUS

         11.1     Termination.

         (a) Termination.  This Agreement may be terminated at any time prior to
Closing: 

               (i) By mutual written consent of Buyer and Seller;

               (ii) By Buyer or Seller if the Closing shall not have occurred on
or before December 31, 1997; provided however,  that this provision shall not be
available to Buyer if Seller has the right to  terminate  this  Agreement  under
clause (iv) of this Section 11.1, and this  provision  shall not be available to
Seller if Buyer has the right to terminate this Agreement  under clause (iii) of
this Section 11.1, in each case because of a material breach by the other party;

               (iii) By Buyer if there  is a  material  breach  of any  material
representation  or  warranty  set forth in  Article  IV  hereof or any  material
covenant or agreement to be complied with or performed by Seller pursuant to the
terms of this  Agreement  or the  failure of a material  condition  set forth in
Article  VIII to be  satisfied  (and such  condition is not waived in writing by
Buyer) on or prior to the Closing  Date,  or the  occurrence  of any event which
results or would  result in the  failure of a  material  condition  set forth in
Article  VIII to be  satisfied on or prior to the Closing  Date,  provided  that
Buyer may not terminate  this  Agreement  prior to the Closing if Seller has not
had an adequate notice of and opportunity to cure such failure; or

               (iv) By Seller  if there is a  material  breach  of any  material
representation  or  warranty  set forth in  Article V hereof or of any  material
covenant or agreement to be complied with or performed by Buyer  pursuant to the
terms of this  Agreement  or the  failure of a material  condition  set forth in
Article  VII to be  satisfied  (and such  condition  is not waived in writing by
Seller) on or prior to the Closing  Date,  or the  occurrence of any event which
results or would  result in the failure of a condition  set forth in Article VII
to be satisfied on or prior to the Closing Date; provided that,

                                       29




<PAGE>



Seller may not terminate this  Agreement  prior to the Closing Date if Buyer has
not had adequate notice of and an opportunity to cure such failure.

         (b) In the Event of  Termination.  In the event of  termination of this
Agreement:

               (i) No party hereto  shall have any  Liability to any other party
to this  Agreement,  except for any willful breach of this  Agreement  occurring
prior to the proper  termination  of this  Agreement.  The foregoing  provisions
shall not limit or restrict the  availability  of specific  performance or other
injunctive  relief to the extent that specific  performance or such other relief
would otherwise be available to a party hereunder.

     11.2  Assignment.   Neither  this  Agreement  nor  any  of  the  rights  or
obligations  hereunder  may be assigned by any party  without the prior  written
consent of the other parties. Subject to the foregoing,  this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors  and  permitted  assigns,  and no other  person shall have any right,
benefit or  obligation  under this  Agreement  as a third party  beneficiary  or
otherwise.

     11.3 Notices; Transfer of Funds. All notices,  requests,  demands and other
communications  which are required or may be given under this Agreement shall be
in  writing  and  shall be  deemed to have been  duly  given  when  received  if
personally delivered; when transmitted if transmitted by telecopy, electronic or
digital  transmission  method;  the day  after it is sent,  if sent for next day
delivery to a domestic address by recognized  overnight  delivery service (e.g.,
Federal  Express);  and upon receipt,  if sent by certified or registered  mail,
return receipt requested. In each case notice shall be sent to:

                  If to Seller, addressed to:

                           Protein Databases, Inc.
                           405 Oakwood Road
                           Huntington Station
                           New York, NY  11746-7296

                           Attention:  Steven Blose

                           With a copy to:

                           Peter S. Kolevzon
                           Kramer, Levin, Naftalis & Frankel
                           919 Third Avenue
                           New York, NY  10022-3903

                  If to Buyer, addressed to:

                           Bio-Rad Laboratories, Inc.
                           1000 Alfred Nobel Drive
                           Hercules, CA  94547
                           Attention:  Sanford Wadler


                                       30




<PAGE>



or to such other place and with such other copies as either party may  designate
as to itself by written notice to the others.

         Payments  to be  made  to  Seller  hereunder  shall  be  made  by  wire
transferred funds to be delivered to Seller's account number 411-006490, routing
number 021000018,  at The Bank of New York, 501 Walt Whitman Road, Melville,  NY
11747,  or to such other  account or place as Seller  may  designate  by written
notice as provided herein.

     11.4 Choice of Law. This Agreement shall be construed,  interpreted and the
rights of the parties determined in accordance with the laws of the State of New
York  applicable  to  contracts  made and to be performed  entirely  within such
state.

     11.5  Entire  Agreement;   Amendments  and  Waivers.  This  Agreement,  the
Ancillary Agreement, together with all exhibits and schedules hereto and thereto
(including the Disclosure Schedule),  constitutes the entire agreement among the
parties  pertaining  to the  subject  matter  hereof  and  supersedes  all prior
agreements,  understandings,  negotiations  and  discussions,  whether  oral  or
written,  of the  parties.  This  Agreement  may  not be  amended  except  by an
instrument  in  writing  signed  on  behalf of each of the  parties  hereto.  No
amendment, supplement, modification or waiver of this Agreement shall be binding
unless executed in writing by the party to be bound thereby. No waiver of any of
the provisions of this Agreement shall be deemed or shall constitute a waiver of
any other  provision  hereof  (whether  or not  similar),  nor shall such waiver
constitute a continuing waiver unless otherwise expressly provided.

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

     11.7 Expenses.  Except as otherwise specified in this Agreement, each party
hereto shall pay its own legal,  accounting,  out-of-pocket  and other  expenses
incident to this  Agreement and to any action taken by such party in preparation
for carrying this Agreement into effect.

     11.8  Invalidity.  In the  event  that  any one or  more of the  provisions
contained  in this  Agreement  or in any other  instrument  referred  to herein,
shall,  for any reason,  be held to be invalid,  illegal or unenforceable in any
respect,  then  to  the  maximum  extent  permitted  by  law,  such  invalidity,
illegality  or  unenforceability  shall not affect any other  provision  of this
Agreement or any other such instrument.

     11.9  Publicity.  Except as may be required by applicable  Securities  Law,
neither  Buyer nor  Seller  shall  issue any press  release  or make any  public
statement regarding the transactions  contemplated hereby, without prior written
approval of the other party, which approval will not be unreasonably withheld or
delayed. Buyer and Seller may, at their discretion, issue or make an appropriate
press release or public announcement after the Closing.

     11.10 Cumulative  Remedies.  All rights and remedies of either party hereto
are  cumulative  of each other and of every other right or remedy such party may
otherwise  have at law or in equity,  and the  exercise of one or more rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.


                                       31




<PAGE>



     11.11 Service of Process, Consent to Jurisdiction.

         (a) Service of Process.  Each party hereto irrevocably  consents to the
service of any  process,  pleading,  notices or other  papers by the  mailing of
copies thereof by registered, certified or first class mail, postage prepaid, to
such party at such  party's  address set forth  herein,  or by any other  method
provided or permitted under New York law.

         (b)  Consent  and  Jurisdiction.  Each  party  hereto  irrevocably  and
unconditionally  (1)  agrees  that any suit,  action or other  legal  proceeding
arising out of this Agreement may be brought in the United States District Court
for the  District in which  Seller is  currently  located;  (2)  consents to the
jurisdiction or any such court in any such suit,  action or proceeding;  and (3)
waives any objection  which it may have to the laying of venue of any such suit,
action or proceeding in any such court.



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed on their respective behalf, by their respective officers thereunto
duly authorized, all as of the day and year first above written.


BIO-RAD LABORATORIES, INC.



By
   --------------------------------------------------------
         Name:    Sanford Wadler
         Its      Vice President and General Counsel



PROTEIN DATABASES, INC.



By
   --------------------------------------------------------
         Name:
         Its


                                       32


<PAGE>

                             PROTEIN DATABASES, INC.

                         SPECIAL MEETING OF STOCKHOLDERS

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


                      THIS PROXY IS SOLICITED ON BEHALF OF
                             THE BOARD OF DIRECTORS


The  undersigned  stockholder(s)  of Protein  Databases,  Inc. (the  "Company"),
hereby appoints Ronald R. Hahn and Joel A. Fontaine,  and each of them,  proxies
of the undersigned with full power of substitution and  resubstitution,  for and
in the name,  place and stead of the  undersigned,  to vote all of the shares of
Common  Stock of the Company  which the  undersigned  is entitled to vote at the
Special   Meeting   of   Stockholders   of   the   Company   to   be   held   at
_____________________________________    on   ___________________,    1997,   at
_____a.m.,  and at any  adjournment  thereof,  as instructed  below and in their
discretion  with respect to any other matter that may properly  come before such
Special Meeting.

THE SHARES REPRESENTED  HEREBY SHALL BE VOTED AS SPECIFIED.  IF NO SPECIFICATION
IS MADE,  SUCH  SHARES  SHALL BE VOTED  (I) "FOR"  THE  APPROVAL  OF THE PLAN OF
COMPLETE  LIQUIDATION  AND  DISSOLUTION,  (II) "FOR" THE  APPROVAL  OF THE ASSET
PURCHASE  AGREEMENT,  AND (III) "FOR" THE  APPROVAL OF THE CHANGE OF NAME OF THE
COMPANY, AS SET FORTH IN THE ACCOMPANYING PROXY STATEMENT.

                               (See reverse side.)

                                      - 1 -


<PAGE>


                                           (reverse side of proxy card)

a.   Approval of the Plan of Complete  Liquidation and  Dissolution  attached as
     Exhibit A to the accompanying Proxy Statement.

                                    FOR  |_|     AGAINST  |_|   ABSTAIN  |_|

b.   Approval of the Asset  Purchase  Agreement  between the Company and Bio-Rad
     Laboratories,  Inc.  attached  as  Exhibit  B  to  the  accompanying  Proxy
     Statement.

                                    FOR  |_|     AGAINST  |_|   ABSTAIN  |_|

c.   Approval of the change of the Company's name to "IDP Liquidating Corp."

                                    FOR  |_|     AGAINST  |_|   ABSTAIN  |_|

d.   Upon such other  matters  which may properly come before the meeting or any
     adjournment thereof.

         PLEASE  DATE,  SIGN AND RETURN THIS PROXY  PROMPTLY  USING THE ENCLOSED
ENVELOPE.

                    Dated:  ..................................., 1997

                    .....................................................
                    Signature

                    .....................................................
                    Signature

                    Please sign exactly as your name(s) appears on this card. If
                    shares are  registered  in the names of two or more persons,
                    each  should  sign.  Executors,  administrators,  guardians,
                    attorneys and corporate officers should add their titles.

                    The undersigned  hereby revokes any proxy  previously  given
                    and acknowledges receipt of written notice of, and the proxy
                    statement for, the Special Meeting of Stockholders.


                                      - 2 -



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