CAMBRIDGE BIOTECH CORP
8-K, 1996-08-02
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                        SECURITIES AND EXCHANGE COMMISSION

                              Washington, D.C.  20549

                                    __________

                                     FORM 8-K

                                  CURRENT REPORT

                      Pursuant to Section 13 or 15(d) of the
                          Securities Exchange Act of 1934

                                    __________


                                   JULY 18, 1996
                 Date of Report (Date of earliest event reported)


                           CAMBRIDGE BIOTECH CORPORATION
                (Exact name of registrant as specified in charter)


             Delaware                0-12081               04-2726626
          (State or other        (Commission File          (IRS Employer
         jurisdiction of             Number)           Identification
          incorporation)                              Number)


                365 Plantation Street, Biotechnology Research Park
                          Worcester, Massachusetts  01605
               (Address of principal executive offices and zip code)

                                  (508) 797-5777
               (Registrant's telephone number, including area code)

                                  Not applicable
           (Former name or former address, if changed since last report)



                                                                         <PAGE>





        ITEM 3    BANKRUPTCY

        Summary of Plan of Reorganization Confirmed by the Bankruptcy
        Court

             Cambridge Biotech Corporation ("CBC") filed a petition for
        relief under Chapter 11 of the Bankruptcy Code on July 7, 1994,
        with the United States Bankruptcy Court for the District of
        Massachusetts, Western Division (the "Bankruptcy Court"), Case No.
        94-43054-JFQ.  (See Current Report on Form 8-K filed July 15,
        1994.)  On April 10, 1996, CBC filed a Chapter 11 Reorganization
        Plan, which was amended on May 10, 1996, and further amended on
        May 17, 1996, May 20, 1996, and July 15, 1996 (as so amended, the
        "Plan").  The Plan was confirmed by order of the Bankruptcy Court
        dated July 18, 1996.  (See Item 5, Other Events pertaining to a
        stay of the order.)  The following description summarizes certain
        information concerning the Reorganization Plan.  This summary does
        not purport to be complete and is qualified in its entirety by
        reference to the text of the full Plan which is filed under Item 7
        hereof.  Capitalized terms which are not defined herein shall have
        the meanings specified in the Plan, except that the common stock
        of Aquila is herein referred to as "Aquila Common Stock" (rather
        than "New Common Stock") and the common stock of CBC is referred
        to as "CBC Common Stock" (rather than "Old Common Stock").

             The Plan as proposed by CBC includes the following major
        elements: (1) the sale of CBC's Enterics Business; (2) the
        creation of a new holding company, Aquila Biopharmaceuticals, Inc.
        ("Aquila"), to be owned by CBC's creditors and equity security
        holders which will reorganize and continue the operation of CBC's
        Biopharmaceutical Business and on the Consummation Date will own
        all the shares of CBC; and (3) the sale of the stock of CBC (which
        will continue to own the Retroviral Business) by Aquila.  Article
        IV of the Plan sets forth the basic steps in implementation of the
        Plan, as follows:

             (i)  CBC's sale of the "Enterics Business", free and clear of
        liens, encumbrances, Claims and Interests, prior to consummation
        of the remainder of the Plan.  On June 19, 1996, the Bankruptcy
        Court approved the sale of the Enterics Business to Meridian
        Diagnostics, Inc. for approximately $5,700,000 in cash, and the
        sale closed on June 24, 1996.  (See Current Report on Form 8-K
        filed July 9, 1996.)

             (ii) The issuance by Aquila on the Consummation Date under
        the Plan of 5,000,000 shares of Aquila Common Stock (each carrying
        a related Right as described below) to the CBC equity security
        holders and certain CBC creditors in exchange for their Interests
        in and Claims against CBC and the payment of other creditors in
        cash.




                                       - 2 -<PAGE>




             (iii)     The distribution of the assets of the
        Biopharmaceutical Business to Aquila as the sole stockholder of
        CBC on the Consummation Date.

             (iv) Immediately after giving effect to the transactions in
        clauses (ii) and (iii) above, Aquila's sale of all the issued and
        outstanding stock of CBC to bioMerieux Vitek, Inc. ("bioMerieux")
        pursuant to a Master Acquisition Agreement dated as of April 4,
        1996, between CBC, Aquila and bioMerieux for $6,500,000 in cash.

             (v)  A Rights Offering pursuant to which each share of Aquila
        Common Stock distributed under the Plan would be entitled to
        exercise a transferable right (a "Right") entitling the holder to
        purchase one Unit, each Unit consisting of one share of Aquila
        Common Stock and one warrant to purchase one share of Aquila
        Common Stock (a "Warrant").  In addition, each holder of a Right
        (or beneficial owner in the case of securities held in street
        name) who has fully exercised his basic right to purchase one Unit
        for each Right received (an "Eligible Rights Holder") also will
        have the right to purchase any desired number of Units that have
        not been subscribed for by the holders of other Rights (the
        "Oversubscription Rights"), subject to proration if
        oversubscribed.  The Unit subscription price under the Rights will
        be a dollar amount of up to $9.50 per Unit, as determined by
        Aquila.  However, Aquila reserves the right to reduce the
        subscription price for the Units in certain circumstances.

        Treatment of Claims and Interests

             Under the terms of the Plan, the holders of various Claims
        against and Interests in CBC are to be treated as follows:

             1.   Administrative and Priority Claims

                  Under the Plan, on the Consummation Date, or as soon
        thereafter as practicable, all Allowed Administrative Claims
        (currently estimated to be approximately $4,400,000) will be paid
        in full in cash, except that Aquila intends to exercise its right to pay
        Postpetition Incentive Stock Claims in whole or in part in Aquila
        Common Stock.

                  There are disputes with certain creditors concerning the
        applicable cure amount with respect to executory contracts or
        unexpired leases to be assumed (or assumed and assigned) under the
        Plan which are scheduled to be tried in the Bankruptcy Court in
        the next few months.  Assumption or assumption and assignment of
        contracts and leases will require payment of cure amounts, as
        determined by the Bankruptcy Court.  The aggregate amount in
        dispute is approximately $1,050,000, and a Distribution Reserve
        will be established.

                  Certain priority claims (which CBC currently estimates
        will not exceed $100,000) will be paid in full in cash on the
        Consummation Date.

                                       - 3 -<PAGE>




             2.   Class 2: Secured Claims

                  The only secured creditor under the Plan is Signet Bank/
        Maryland, as the holder of mortgages on CBC's two principal
        parcels of Maryland real estate securing CBC's obligations under
        two separate loans.  At the Petition Date, $4,042,739 was owed to
        Signet under these loans.  Under the Plan, Signet will receive in
        full satisfaction of its claims, a promissory note from Aquila in
        the original sum of $4,200,000, payable on certain terms and
        conditions.

             3.   Class 3: General Unsecured Claims Less Than Or Equal to
        $500

                  Class 3 Claims (currently estimated to be approximately
        $46,000) will be paid in cash in full on the Consummation Date, or
        as soon thereafter as practicable.

             4.   Class 4: General Unsecured Claims Exceeding $500

                  Class 4 Claims filed or deemed filed, including Disputed
        Claims, amount to approximately $7,900,000, in the aggregate.  At
        or before the confirmation hearing, most of the Disputed Claims
        were either settled or disallowed so that the total amount of
        Allowed Class 4 Claims as of the Confirmation Date is currently
        estimated to be approximately $3,500,000.  Disputed Claims, as of
        the Confirmation Date are currently estimated to be approximately
        $2,500,000 for which a Distribution Reserve consisting of cash and 
        stock will be established.  Disputed Claims will be resolved in the
        Bankruptcy Court over the next few months.

                  Under the Plan, a holder of a Class 4 Claim could elect,
        at the time it cast its ballot, to receive under Class 4 Option A
        cash equal to 51% of the unpaid portion of its Allowed Class 4
        Claim, subject to an aggregate cap of $2,000,000 or to receive
        under Class 4 Option B shares of Aquila Common Stock valued at
        $9.50 per share equal to the amount of the holder's Allowed Claim.
        The total amount of claims in Class 4 which elected Option A was
        $1,794,692, creating a cash obligation of $915,293.  Each share of
        Aquila Common Stock to be distributed to the holders of Allowed
        Class 4 Claims under Option B will also include one Right.
        However, no Rights will be distributed on account of any Disputed
        Class 4 Claim that becomes an Allowed Class 4 Claim only after the
        Initial Distribution Date.

             5.   Class 5: Securities Class Claims

                  In exchange for the Class 5 Securities Class Claims,
        Aquila will issue 1,250,000 shares of Aquila Common Stock and one
        Right for each share so issued to the Disbursing Agent on the
        Consummation Date for the benefit of the beneficial holders of
        Class 5 Claims.



                                       - 4 -<PAGE>




                  In addition, CBC agreed to permit the Securities Class
        Plaintiffs to prosecute CBC's claims against its former auditors,
        Deloitte and Touche, subject to CBC's right to receive 10% of the
        proceeds recovered thereon and from any independent claims against
        Deloitte & Touche prosecuted by the Securities Class Plaintiffs on
        their own behalf, net of litigation expenses, all as more
        particularly described in the Securities Class Settlement
        Agreements.  In settlement of claims against the Securities Class
        Settling Officers and Directors, the Securities Settlement Class
        also shall be entitled to receive $1,050,000 in cash from an
        insurance policy insuring the Securities Class Settling Officers
        and Directors.

                  On the Initial Distribution Date, or as soon as
        practicable thereafter, the Disbursing Agent shall distribute to
        "Authorized Claimants" their respective shares of Aquila Common
        Stock and Rights issued on the Consummation Date to the Disbursing
        Agent on account of Securities Class Claims.  The Aquila Common
        Stock, Rights and other consideration payable to or distributable
        to the Securities Settlement Class will be distributed in the
        manner and according to the procedures set forth in the Securities
        Class Settlement Agreements.  Rights distributed on the Initial
        Distribution Date will be exercisable only during the Rights
        Exercise Period.  No Rights shall be distributed to any Securities
        Settlement Class member who is not an Authorized Claimant as of
        the Initial Distribution Date.

             6.   Class 6:  CBC Common Stock Interests

                  In exchange for all Class 6 CBC Common Stock Interests,
        a number of shares of Aquila Common Stock currently estimated to
        be approximately 3,314,755 shares, will be issued to the
        Disbursing Agent on the Consummation Date, for the benefit of the
        holders of Class 6 CBC Common Stock Interests, plus one Right for
        each share of Aquila Common Stock so issued.  This number
        represents the total amount of 5,000,000 shares of Aquila Common
        Stock issued under the Plan, less (i) the 1,250,000 shares issued
        to the Class 5 Claimants, (ii) the approximately 124,425 shares
        currently estimated to be required to be issued on account of
        Postpetition Incentive Stock Claims, (iii) the approximately
        184,880 shares currently estimated to be required to be issued on
        account of Allowed Class 4 Claims, and (iv) the approximately
        125,941 shares currently estimated to be issued for deposit in the
        Distribution Reserve.

                  On the Initial Distribution Date, or as soon as
        practicable thereafter, Aquila's transfer agent will distribute to
        the holders of Allowed Class 6 CBC Common Stock Interests their
        respective pro rata share of the shares of Aquila Common Stock and
        Rights.  Rights distributed on the Initial Distribution Date will
        be exercisable during the Rights Exercise Period.  No Rights shall
        be distributed on account of any Disputed Class 6 Interest that
        becomes an Allowed Interest only after the Initial Distribution
        Date.

                                       - 5 -<PAGE>




        CBC Common Stock Outstanding and Aquila Common Stock Issued for
        Claims and Interests

             As of the Confirmation Date, there were 26,065,017 shares of
        CBC Common Stock outstanding.  On the Consummation Date, Aquila
        will issue 5,000,000 shares of Aquila Common Stock and related
        Rights and deliver them to the Disbursing Agent in exchange for
        all Interests in CBC and certain Claims against CBC as described
        above.  Aquila Common Stock not distributed to holders of Disputed
        Claims will be held by the Disbursing Agent pending resolution.  

        Assets and Liabilities of CBC

             Filed under Item 7 as an Exhibit is an unaudited balance
        sheet of CBC showing the assets and liabilities of CBC as of June
        30, 1996, the closest practicable date to the confirmation date of
        July 18, 1996.

        ITEM 5    OTHER EVENTS

                  The United States Bankruptcy Appellate Panel for the
        First Circuit entered an order on July 29, 1996, imposing a
        temporary twenty-one day stay on the Bankruptcy Court order
        confirming the Plan.  The stay was requested by Institut Pasteur
        and Pasteur Sanofi Diagnostics who are appealing the Bankruptcy
        Court's confirmation of the Plan over their objection to the
        assumption of various patent licenses owned by Institut Pasteur
        and Pasteur Sanofi Diagnostics and licensed to CBC.

        ITEM 7    FINANCIAL STATEMENTS AND EXHIBITS 

             (a)  Exhibits

                  2.   Confirmed Reorganization Plan (consisting of
                       Reorganization Plan dated May 20, 1996, and
                       Modification dated July 15, 1996).

                  99.  Unaudited Balance Sheet of CBC as of June 30, 1996.


                                    SIGNATURES

             Pursuant to the requirements of the Securities Exchange Act
        of 1934, the registrant has duly caused this report to be signed
        on behalf by the undersigned thereunto duly authorized.


                                           CAMBRIDGE BIOTECH CORPORATION



        Dated:  August 2, 1996          By:/s/ Alison Taunton-Rigby
                                                Alison Taunton-Rigby,
                                                President

                                       - 6 -




       







                           UNITED STATES BANKRUPTCY COURT
                              DISTRICT OF MASSACHUSETTS

                                            
                                            )
         In re:                             )         Chapter 11
                                            )
         CAMBRIDGE BIOTECH CORPORATION,     )    Case No. 94-43054-JFQ
                                            )
              Debtor                        )
                                            )



                               AMENDED (MAY 17, 1996)
                REORGANIZATION PLAN OF CAMBRIDGE BIOTECH CORPORATION
                        AS FURTHER AMENDED AS OF MAY 20, 1996



         BROWN, RUDNICK, FREED & GESMER, P.C.
         Attorneys for Cambridge Biotech Corporation
         Debtor-in-Possession

         One Financial Center
         Boston, MA  02111
         617-856-8200

         JOSEPH F. RYAN
         JAMES E. McGUIRE
         JEFFREY L. JONAS
         ANTHONY L. GRAY

         DATED:    Worcester, Massachusetts
                   May 20, 1996<PAGE>




                                  TABLE OF CONTENTS

         INTRODUCTION............................................



         ARTICLE I...............................................


         A. Scope Of Definitions.................................
         B. Definitions..........................................
         C. Rules Of Interpretation..............................
         D. Computation Of Time..................................


         ARTICLE II..............................................


         A. Introduction.........................................
         B. Unclassified Claims (not entitled to vote on the
            Plan)................................................
            1. Administrative Claims.............................
            2. Priority Tax Claims...............................
         C. Unimpaired Class Of Claims (not entitled to vote on
            the Plan)............................................
            1. Class 1:  Other Priority Claims...................
            2. Class 3:  General Unsecured Claims Less Than Or
               Equal To $500 (Convenience Class).................
         D. Impaired Classes Of Claims (entitled to vote on the
            Plan)................................................
            1. Class 2:  Secured Claims..........................
            2. Class 4:  All Other General Unsecured Claims......
            3. Class 5:  Securities Class Claims.................
         E. Impaired Class Of Interests (entitled to vote on the 
            Plan)................................................
            1. Class 6:  Old Common Stock Interests..............









                                        - 2 -<PAGE>




         ARTICLE III.............................................


         A. Unclassified Claims..................................
            1. Administrative Claims.............................
            2. Priority Tax Claims...............................
         B. Unimpaired Class Of Claims...........................
            1. Class 1:  Other Priority Claims...................
            2. Class 3:  General Unsecured Claims Less Than Or
               Equal To $500.....................................
         C. Impaired Classes Of Claims...........................
            1. Class 2:  Secured Claims..........................
            2. Class 4:  General Unsecured Claims Exceeding $500     
            3. Class 5:  Securities Class Claims.................
         D. Impaired Class Of Interests..........................
            1. Class 6:  Old Common Stock Interests..............


         ARTICLE IV..............................................


         A. Sale of Enterics Business............................
         B. Formation of Aquila And Distribution Of Certain
            Assets...............................................
         C. Sale Of Retroviral Business..........................
            1. Sale of CBC Stock.................................
         D. Tax Issues...........................................
         E. Rights Offering......................................
            1. Rights............................................
            2. Rights Exercise Period; Extension.................
            3. Proration; Oversubscription Procedures............
            4. Reservation Of Right To Make Certain Changes......
            5. Transferability...................................
         F. Directors And Officers...............................
         G. Revesting Of Assets..................................
         H. Substantial Contribution Compensation And Expenses
            Bar Date.............................................
         I. Cancellation Of Old Common Stock.....................
         J. Exclusivity Period...................................

                                        - 3 -<PAGE>




         K. Retained Litigation..................................
         L. Effectuating Documents; Further Transactions.........


         ARTICLE V...............................................


         A. Classes Entitled To Vote.............................
         B. Class Acceptance Requirement.........................
         C. Cramdown.............................................


         ARTICLE VI..............................................


         A. New Common Stock.....................................
         B. Rights...............................................
         C. Units................................................
         D. Warrants.............................................
         E. Registration/Listing.................................


         ARTICLE VII.............................................


         A. Date Of Distributions................................
         B. Interest On Claims...................................
         C. Disbursing Agent.....................................
         D. Record Date For Distributions To Holders Of Old
            Common Stock.........................................
         E. Means Of Cash Payment................................
         F. No Fractional Securities Issued; No Distribution For 
            Holders Who Would Receive Less Than Five Shares......
         G. Delivery Of Distributions............................
         H. No Voting By Disbursing Agent........................


         ARTICLE VIII............................................


         A. Assumed Contracts And Leases.........................
         B. Payments Related To Assumption Of Executory Contracts 
            And Unexpired Leases; Bar to Pre-Confirmation Date
            Claims...............................................

                                        - 4 -<PAGE>




         C. Rejected Contracts And Leases........................
         D. Bar To Rejection Damages.............................
         E. Assignment Of Executory Contracts And Unexpired
            Leases To Aquila.....................................
         F. Unidentified Executory Contracts and Unexpired
            Leases...............................................


         ARTICLE IX..............................................


         A. Conditions To The Confirmation Date..................
         B. Conditions To The Consummation Date..................
         C. Waiver Of Conditions To The Confirmation Date Or 
            Consummation Date....................................


         ARTICLE X...............................................


         A. No Distributions Pending Allowance...................
         B. Distribution Reserve.................................
         C. Distributions After Allowance........................


         ARTICLE XI..............................................


         A. Modification Of The Plan.............................


         ARTICLE XII.............................................


         ARTICLE XIII............................................


         A. Securities Class Action Settlement...................
            1. Background........................................
            2. Settlement........................................
            3. Terms of Settlement...............................







                                        - 5 -<PAGE>




         ARTICLE XIV.............................................


         A. Setoffs..............................................
         B. Withholding And Reporting Requirements...............
         C. Discharge Of CBC And Aquila..........................
         D. Intentionally Omitted................................
         E. Committees...........................................
         F. Binding Effect.......................................
         G. Revocation, Withdrawal Or Nonconsummation............
            1. Right To Revoke Or Withdraw.......................
            2. Effect Of Withdrawal, Revocation, Or
               Nonconsummation...................................
         H. Post-Confirmation Reservation Of Shares For
            Issuance Upon Exercise Of Rights And Warrants........
         I. Other Post-Consummation Reserves Of New Common
            Stock................................................
         J. Notices..............................................
         K. Indemnification Obligations..........................
         L. Prepayment...........................................
         M. Term Of Injunctions Or Stays.........................
         N. Governing Law........................................
























                                        - 6 -<PAGE>




                                    INTRODUCTION



              Cambridge Biotech Corporation,  debtor-in-possession  in  the
         above-captioned  Chapter  11  reorganization  case ("CBC"), hereby
         proposes the following reorganization plan for the  resolution  of
         CBC's outstanding creditor Claims and equity Interests.  Reference
         is made to the Disclosure  Statement  (as  that  term  is  defined
         herein)   for   results  of  operations,  projections  for  future
         operations, risk factors, a summary and analysis of the Plan,  and
         certain related matters.

              Pursuant to section 1125(b) of the Bankruptcy Code, a vote to
         accept or reject the Plan cannot be solicited from a holder  of  a
         Claim  or Interest until such time as the Disclosure Statement has
         been approved by the Bankruptcy Court and distributed  to  holders
         of  Claims  and  holders  of Interests.  All holders of Claims and
         holders of Interests are encouraged  to  read  the  Plan  and  the
         Disclosure  Statement in their entirety before voting to accept or
         reject the Plan.

                                      ARTICLE I
            DEFINITIONS, RULES OF INTERPRETATION, AND COMPUTATION OF TIME

         A.   Scope Of Definitions 

              For purposes of this Plan, except as  expressly  provided  or
         unless  the  context otherwise requires, all capitalized terms not
         otherwise defined shall have the meanings ascribed to them in this
         Article  I  of  the  Plan.   Any term used in the Plan that is not
         defined herein, but is defined  in  the  Bankruptcy  Code  or  the
         Bankruptcy  Rules, shall have the meaning ascribed to that term in
         the Bankruptcy Code or the Bankruptcy Rules.  Whenever the context
         requires,  such  terms  shall  include  the  plural as well as the
         singular number, the masculine gender shall include the  feminine,
         and the feminine gender shall include the masculine.

         B.   Definitions 

              1.   "Administrative  Claim"  means a Claim for payment of an
         administrative expense of a kind specified in  section  503(b)  of
         the  Bankruptcy  Code and entitled to priority pursuant to section
         507(a)(1) of the Bankruptcy Code, including, but not  limited  to,
         the  actual,  necessary  costs  and  expenses,  incurred after the
         Petition Date,  of  preserving  CBC's  Estate  and  operating  the
         business  of  CBC,  including  wages, salaries, or commissions for
         services rendered after the commencement of the Chapter  11  Case,
         Professional  Fees,  and all fees and charges assessed against the
         Estate under chapter 123 of title 28, United States Code, and  all
         Allowed  Claims  that are entitled to be treated as Administrative
         Claims pursuant to a Final Order of  the  Bankruptcy  Court  under
         section  546(c)(2)(A)  of  the  Bankruptcy Code.  For distribution
         purposes under  the  Plan,  Administrative  Claims  shall  include

                                        - 7 -<PAGE>




         Postpetition  Incentive  Stock  Claims,  Senior  Executives  Stock
         Options, Rockville Cash Stay Bonus Claims, and Cure payments  with
         respect  to executory contracts and unexpired leases to be assumed
         under the Plan pursuant to section 365 of the Bankruptcy Code.

              2.   "Allowed Claim" means a Claim or any portion thereof (a)
         that  has  been  allowed  by a Final Order, (b) either (x) that is
         Scheduled, other than a Claim that is  Scheduled  at  zero  or  as
         disputed,  contingent or unliquidated, or (y) for which a proof of
         claim has been timely filed with the Bankruptcy Court pursuant  to
         the  Bankruptcy  Code, any Final Order of the Bankruptcy Court, or
         other applicable bankruptcy law, and as to  which  either  (i)  no
         objection  to  its  allowance has been filed within the periods of
         limitation fixed by the Bankruptcy Code or by any Final  Order  of
         the  Bankruptcy  Court  or (ii) any objection to its allowance has
         been settled or withdrawn, or has been denied by a Final Order, or
         (c) that is expressly allowed in the Plan.

              3.   "Allowed  Class ... Claim" means an Allowed Claim in the
         particular Class described.

              4.   "Allowed Class ... Interest" means an  Interest  in  the
         particular  Class  described  (a) that has been allowed by a Final
         Order, (b) for which (i) no objection to its  allowance  has  been
         filed  within  the  periods  of limitation fixed by the Bankruptcy
         Code or by any Final Order of the Bankruptcy  Court  or  (ii)  any
         objection  to  its allowance has been settled or withdrawn, or (c)
         that is expressly allowed in the Plan.

              5.   "Aquila Biopharmaceuticals, Inc."  means  a  corporation
         organized  by CBC under the laws of the State of Delaware, for the
         purpose of acquiring  the  Biopharmaceutical  Business  under  the
         Plan.

              6.   "Aquila  By-laws"  means Aquila's by-laws, substantially
         in the form attached as Exhibit B-2 hereto.

              7.   "Aquila Certificate  of  Incorporation"  means  Aquila's
         certificate of incorporation in effect under the laws of the State
         of Delaware substantially in the  form  attached  as  Exhibit  B-1
         hereto.

              8.   "Authorized Claimants" means Securities Settlement Class
         members whose Class 5 Claims are allowed for distribution purposes
         as provided under the Securities Class Settlement Agreements.

              9.   "Ballot"   means   each   of  the  forms  that  will  be
         distributed with the Disclosure Statement to holders of Claims and
         holders  of  Interests in Classes that are impaired under the Plan
         and entitled to vote under Section V.A hereof in  connection  with
         the solicitation of acceptances of the Plan.




                                        - 8 -<PAGE>




              10.  "Bankruptcy  Code"  means  the  Bankruptcy Reform Act of
         1978, as amended and codified in Title 11  of  the  United  States
         Code, 11 U.S.C.   101-1330.

              11.  "Bankruptcy  Court"  means  the United States Bankruptcy
         Court for the District of Massachusetts (Western Division) or such
         other court as may have jurisdiction over the Chapter 11 Case.

              12.  "Bankruptcy Rules" means the Federal Rules of Bankruptcy
         Procedure and the  Official  Bankruptcy  Forms,  as  amended,  the
         Federal Rules of Civil Procedure, as amended, as applicable to the
         Chapter 11 Case or proceedings therein, and the Local Rules of the
         Bankruptcy  Court,  as  applicable  to  the  Chapter  11  Case  or
         proceedings therein as the case may be.

              13.  "bioMerieux" means bioMerieux Vitek,  Inc.,  a  Missouri
         corporation.

              14.  "Biopharmaceutical   Business"   means  all  assets  and
         business of CBC and the Estate, except the Enterics  Business  and
         the   Retroviral   Business.    The   Biopharmaceutical   Business
         principally includes all assets and business of  CBC  relating  to
         the  development,  manufacture, marketing and sale of vaccines and
         adjuvants.

              15.  "Business  Day"  means  any  day,  excluding  Saturdays,
         Sundays,  and legal holidays, on which national banks are open for
         business in Boston, Massachusetts.

              16.  "Cash" means legal tender of the United States.

              17.  "CBC" means Cambridge Biotech  Corporation,  debtor  and
         debtor-in-possession, prior to the Consummation Date.

              18.  "CBC   Certificate   of   Incorporation"   means   CBC's
         certificate of incorporation in effect under the laws of the State
         of  Delaware,  substantially  in  the  form  attached as Exhibit A
         hereto.

              19.  "Chapter 11 Case" means  the  Chapter  11  Case  of  CBC
         pending  in the Bankruptcy Court and bearing case number 94-43054-
         JFQ.

              20.  "Claim" means  a  claim  against  CBC,  whether  or  not
         asserted, as defined in section 101(5) of the Bankruptcy Code.

              21.  "Class" means a category of holders of Claims or holders
         of Interests described in Section II.

              22.  "Confirmation  Date"  means  the  date  on   which   the
         Confirmation Order is entered by the Bankruptcy Court.

              23.  "Confirmation  Order"  means  the  order, entered by the
         Bankruptcy Court, confirming the Plan.

                                        - 9 -<PAGE>




              24.  "Confirmation Hearing" means the hearing on confirmation
         of the Plan under section 1128 of the Bankruptcy Code.

              25.  "Consummation  Date" means the Business Day on which all
         conditions to the consummation of the Plan set  forth  in  Section
         IX.B  hereof  have been satisfied or waived as provided in Section
         IX.C hereof, as set forth on a certificate to be  filed  with  the
         Court  by the Proponent, provided that the Consummation Date shall
         be not more than thirty (30) days  after  the  Confirmation  Date,
         unless otherwise authorized by the Bankruptcy Court.

              26.  "Creditors'  Committee"  means the Official Committee Of
         Unsecured Creditors appointed in this Chapter 11 Case on or  about
         July  14,  1994  to  represent unsecured creditors of CBC, as such
         Committee may be constituted from time to time.

              27.  "Cure" means the distribution of  Cash,  or  such  other
         property  as  may  be agreed upon by the parties or ordered by the
         Bankruptcy Court, with respect to the assumption of  an  executory
         contract  or  unexpired  lease,  pursuant to section 365(b) of the
         Bankruptcy Code,  in  an  amount  equal  to  all  unpaid  monetary
         obligations,  without  interest  and irrespective of any otherwise
         applicable penalty rate, or such other amount  as  may  be  agreed
         upon  by  the  parties, under such executory contract or unexpired
         lease, to the extent such obligations are  enforceable  under  the
         Bankruptcy Code and applicable bankruptcy law.

              28.  "Deloitte  &  Touche"  means  Deloitte & Touche, L.L.P.,
         CBC's former auditors.

              29.  "Diagnostic Businesses" means the Enterics Business  and
         the Retroviral Business.

              30.  "Disallowed  Claim"  means  (a)  a Claim, or any portion
         thereof, that has been disallowed by a Final Order,  (b)  a  Claim
         that   is  Scheduled  at  zero  or  as  contingent,  disputed,  or
         unliquidated and as to which no proof of claim has been  filed  or
         deemed  timely  filed with the Bankruptcy Court pursuant to either
         the Bankruptcy Code or any Final Order of the Bankruptcy Court  or
         other  applicable bankruptcy law, or (c) a Claim that has not been
         Scheduled and as to which no proof of  claim  has  been  filed  or
         deemed  timely filed  with the Bankruptcy Court pursuant to either
         the Bankruptcy Code or any Final Order of the Bankruptcy Court  or
         other applicable bankruptcy law.

              31.  "District  Court" means the United States District Court
         for the District of Massachusetts presiding  over  the  Securities
         Class Action.

              32.  "Disbursing  Agent" means the party designated by CBC to
         serve as a disbursing agent under Section VII.C of the Plan.   CBC
         may designate Aquila as the Disbursing Agent.



                                       - 10 -<PAGE>




              33.  "Disclosure  Statement"  means  the  written  disclosure
         statement(s)  that  relate  to  the  Plan,  as  approved  by   the
         Bankruptcy  Court  pursuant to section 1125 of the Bankruptcy Code
         and Bankruptcy Rule 3017, as such disclosure statement(s)  may  be
         amended, modified, or supplemented from time to time.

              34.  "Disputed  Claim" means a Claim, or any portion thereof,
         that is neither an Allowed Claim nor a Disallowed Claim.

              35.  "Distribution Reserve" means all Cash, New Common Stock,
         Rights, and other property that would have been distributed on the
         Consummation Date or the Initial Distribution Date,  as  the  case
         may  be, to the holders of Disputed Claims and Disputed Interests,
         if such Disputed Claims and Disputed Interests had, in fact,  then
         been  allowed  (rather than disputed), but which amount is instead
         held by the Disbursing Agent, pending resolution of such  Disputed
         Claims and Disputed Interests.

              36.  "Eligible  Rights  Holder"  means a holder of Rights who
         has subscribed for all the Units to which he is entitled under his
         basic Rights.

              37.  "Enterics Business" means all assets and business of CBC
         principally relating to the diagnosis of certain  gastrointestinal
         and  other  diseases (excluding those caused by retroviruses), all
         as more particularly described on Exhibit C hereto.

              38.  "Enterics Business Buyer"  means  Carter-Wallace,  Inc.,
         the  buyer  of  the  Enterics  Business  pursuant  to the Enterics
         Business  Purchase  Agreement,  or  an   alternative   buyer,   as
         contemplated by the Enterics Business Purchase Agreement.

              39.  "Enterics   Business   Purchase  Agreement"  means  that
         certain Asset Purchase Agreement entered into by and  between  CBC
         and  Carter-Wallace, Inc. with respect to the sale of the Enterics
         Business.

              40.  "Equity  Committee"  means  the  Official  Committee  Of
         Equity  Security  Holders  appointed  in  this  Chapter 11 Case on
         November 17, 1994 to represent equity security holders of CBC,  as
         such Committee may be constituted from time to time.

              41.  "ERISA"  means  the  Employee Retirement Income Security
         Act of 1974, 29 U.S.C.  1301 et seq., as amended.

              42.  "Estate" means the estate of CBC in its Chapter 11 Case,
         pursuant to section 541 of the Bankruptcy Code.

              43.  "Face  Amount"  means,  (a)  when used in reference to a
         Disputed or Disallowed Claim or Interest, the full  stated  amount
         or  the full stated number of shares asserted by the holder in any
         proof of Claim or Interest, as the case may be, timely filed  with
         the Bankruptcy Court or otherwise deemed timely filed by any Final
         Order of the Bankruptcy Court or other applicable bankruptcy  law,

                                       - 11 -<PAGE>




         and  (b)  when  used in reference to an Allowed Claim or Interest,
         the allowed amount or number of shares of such Claim or  Interest,
         as the case may be.

              44.  "Final  Order" means an order or judgment, the operation
         or effect of which has not been stayed, reversed, or  amended  and
         as  to  which order or judgment (or any revision, modification, or
         amendment thereof) the time to appeal or seek review or  rehearing
         has  expired  and  as to which no appeal or petition for review or
         rehearing was filed or, if filed, remains pending.

              45.  "Fiscal Year" means, with respect  to  CBC,  the  fiscal
         year ending December 31 of each year, or such other fiscal year as
         CBC may designate.

              46.  "Initial Distribution Date" means the date, occurring on
         or  as soon as practicable after the Consummation Date, upon which
         the first distributions of New Common Stock and Rights are made to
         holders  of  Allowed  Claims  under Classes 4, 5, and 6; provided,
         however, that in no event  shall  the  Initial  Distribution  Date
         occur  later than thirty (30) Business Days after the Consummation
         Date.

              47.  "Interest" means the right of  a  holder  and  owner  of
         issued  and  outstanding  shares  of Old Common Stock or any other
         equity securities of  CBC  authorized  and  issued  prior  to  the
         Confirmation Date and outstanding on the Confirmation Date.  Other
         Equity  Securities  Claims  shall  be  treated  as  Interests   in
         accordance  with  the  provisions of section 510 of the Bankruptcy
         Code and Section III.D hereof.

              48.  "Internal Revenue Code" means the Internal Revenue  Code
         of 1986, as amended.

              49.  "Maryland  Real Estate" means that certain real property
         owned by CBC and located at 3 and 3 1/2 Taft Court and  1500  East
         Gude Drive, Rockville, Maryland.

              50.  "New  Common  Stock" means the shares of common stock of
         Aquila authorized under Article VI of  the  Plan  and  the  Aquila
         Certificate of Incorporation.

              51.  "New Management and Employee Common Stock Reserve" means
         the reserve of New Common Stock established  pursuant  to  Section
         XIV.I  of  the  Plan  for  purposes of providing incentive equity,
         whether  through  stock  options  or  stock  purchase  plans,   or
         otherwise, to directors, management, employees, and consultants of
         Aquila.

              52.  "Number of Available Units" has the meaning specified in
         Section IV.E.3.




                                       - 12 -<PAGE>




              53.  "Old  Common  Stock" means issued and outstanding shares
         of  CBC's  common  stock,  and  options,  warrants,   or   rights,
         contractual  or  otherwise,  if  any,  to  acquire any such stock,
         excluding only Senior Executives Stock Options.

              54.  "Other Equity Securities Claim"  means  all  Claims,  if
         any,  other  than  the Securities Class Claims, arising from or in
         connection with the purchase and sale of equity securities of CBC,
         including,  without  limitation,  Old  Common  Stock and any stock
         options, warrants, and any other rights to  acquire  interests  in
         CBC, for damages, rescission, or other relief.

              55.  "Other  Priority  Claims"  means  all claims entitled to
         priority pursuant to section 507(a) of the Bankruptcy  Code  other
         than Priority Tax Claims or Administrative Claims.

              56.  "Other  Secured  Claims"  means  Secured Claims, if any,
         other than the Signet Secured Claim.

              57.  "Oversubscription Rights" has the meaning  specified  in
         Section IV.E.1.

              58.  "Person"  means an individual, corporation, partnership,
         joint venture, association, joint stock  company,  trust,  estate,
         unincorporated organization, or other entity.

              59.  "Petition  Date"  means  July 7, 1994, the date on which
         CBC filed its petition for reorganization commencing  the  Chapter
         11 Case.

              60.  "Plan"  means  this  reorganization plan proposed by CBC
         for the resolution of CBC's outstanding creditor Claims and equity
         Interests  in  this  Chapter 11 Case, as such plan may be modified
         from time to time in accordance with the Bankruptcy Code.

              61.  "Postpetition Incentive Stock Claims" means claims under
         the Postpetition Incentive Stock Programs.

              62.  "Postpetition  Incentive  Stock  Programs" means (a) the
         stock incentive plans for CBC's  Worcester  employees  and  senior
         managers  as  described in CBC's Motion for Authority to Implement
         (1)  Stock  Incentive  Plan  for  Worcester  Employees,  and   (2)
         Corporation Restructuring Plan for Senior Managers dated September
         30,  1994,  and  (b)  the  stock  incentive   bonus   or   payment
         arrangements  for  the  following  additional  persons made by CBC
         after the  Petition  Date  for  services  rendered  prior  to  the
         Confirmation Date:  directors, senior managers, and consultants.

              63.  "Priority  Tax Claim" means a Claim entitled to priority
         pursuant to section 507(a)(8) of the Bankruptcy Code.

              64.  "Professional Fees" means a  Claim  of  a  professional,
         retained in the Chapter 11 Case, pursuant to sections 327 and 1103
         of  the  Bankruptcy  Code  or  otherwise,  for   compensation   or

                                       - 13 -<PAGE>




         reimbursement  of costs and expenses relating to services incurred
         prior to and including the Confirmation Date as, when and  to  the
         extent  any  such  Claim  is  approved  by  a  Final Order entered
         pursuant to sections 330, 331, 503(b), or 1103 of  the  Bankruptcy
         Code.

              65.  "Proponent" means CBC.

              66.  "Pro  Rata"  means, at any time, the proportion that the
         Face Amount of a Claim or Interest in a particular Class bears  to
         the  aggregate Face Amount of all Claims or Interests, as the case
         may be (including Disputed  Claims  or  Interests,  but  excluding
         Disallowed  Claims  or  Interests), in such Class, unless the Plan
         provides otherwise.

              67.  "Record Date" means the  record  date  for  purposes  of
         making distributions under the Plan to holders of Old Common Stock
         on  account  of  Allowed  Interests,  which  date  shall  be   the
         Confirmation Date.

              68.  "Reinstated"  or "Reinstatement" means leaving unaltered
         the legal, equitable and  contractual  rights  to  which  a  Claim
         entitles  the  holder  of  such  Claim  so  as to leave such Claim
         unimpaired in accordance with section 1124 of the Bankruptcy Code,
         thereby  entitling the holder of such Claim to, but not more than,
         (a) reinstatement of the original maturity of the  obligations  on
         which  such  Claim  is based, and (b) payment of an amount of Cash
         consisting solely of the sum of (i) matured but  unpaid  principal
         installments,  without  regard  to  any  acceleration of maturity,
         accruing prior to the Consummation Date, (ii) accrued  but  unpaid
         interest  as of the Petition Date, (iii) interest on the amount of
         unpaid principal installments accruing on and after  the  Petition
         Date  and  through  the Consummation Date calculated at the simple
         nondefault interest rate as set forth in any agreement between CBC
         and  the  holder of such Claim, and (iv) reasonable fees, expenses
         and charges, to the extent such fees,  expenses  and  charges  are
         allowed  under  the  Bankruptcy  Code  and are provided for in the
         agreement or agreements on which such Claim  is  based;  provided,
         however,  that  any contractual right that does not pertain to the
         payment when due of principal and interest on  the  obligation  on
         which  such  Claim  is  based,  including,  but  not  limited  to,
         financial covenant ratios, negative pledge covenants, covenants or
         restrictions  on merger or consolidation and affirmative covenants
         regarding corporate existence prohibiting certain transactions  or
         actions   contemplated   by   the   Plan,   or  conditioning  such
         transactions or actions on certain factors, shall not  necessarily
         be reinstated in order to accomplish Reinstatement.

              69.  "Reorganization  Value"  means  the  estimated value per
         share of the New Common Stock to be  issued  on  the  Consummation
         Date,  after  giving  effect  to  the transactions contemplated to
         occur under the Plan on or prior to the Consummation  Date,  which
         is $9.50, subject to approval by the Bankruptcy Court.


                                       - 14 -<PAGE>




              70.  "Reorganized   CBC"   means   CBC   on   and  after  the
         Consummation  Date,  after  giving  effect  to  the  sale  of  the
         Retroviral  Business  pursuant to the Retroviral Business Purchase
         Agreement.

              71.  "Retroviral Business" means all assets and  business  of
         CBC   principally  relating  to  the  diagnosis  of  retroviruses,
         including those associated with AIDS,  all  as  more  particularly
         described on Exhibit D hereto.

              72.  "Retroviral  Business Buyer" means bioMerieux, the buyer
         of the Retroviral Business pursuant  to  the  Retroviral  Business
         Purchase  Agreement,  or  an alternative buyer, as contemplated by
         the Retroviral Purchase Agreement Bidding Procedures.

              73.  "Retroviral  Business  Purchase  Agreement"  means  that
         certain  Purchase  Agreement  dated  as  of  April 4, 1996, by and
         between CBC and bioMerieux, a summary of which is attached  hereto
         as Exhibit E.

              74.  "Retroviral    Business   Purchase   Agreement   Bidding
         Procedures" means  the  Bidding  Procedures,  as  defined  in  the
         Retroviral  Business  Purchase  Agreement,  and previously amended
         and/or approved by order of the Bankruptcy Court.

              75.  "Right" means the transferable basic right  to  purchase
         one Unit for each share of New Common Stock issued under this Plan
         in settlement of Allowed Class 4 and Class 5  Claims  and  Allowed
         Class  6  Interests  or a Postpetition Incentive Stock Claim, plus
         the right under certain conditions  to  exercise  Oversubscription
         Rights as described in Section IV.E.

              76.  "Rights  Agent"  means  the Rights Agent with respect to
         the Rights offering pursuant to the Rights and Warrants Agreement,
         which is attached hereto as Exhibit F.

              77.  "Rights  Certificate"  means  a  certificate  evidencing
         Rights.

              78.  "Rights Exercise Period" means the period commencing  on
         the Initial Distribution Date and ending twenty (20) calendar days
         thereafter, unless extended for  up  to  fifteen  (15)  additional
         calendar days at the option of Aquila.

              79.  "Rockville Cash Stay Bonus Claims" means employee Claims
         under the Rockville Cash Stay Bonus Program.

              80.  "Rockville Cash Stay Bonus Program" means the cash  stay
         bonus  plan  for  CBC's  Rockville employees as described in CBC's
         Motion for Authority to  Assume  Cash  Stay  Bonus  Contracts  for
         Rockville  Employees dated September 29, 1994, and approved by the
         Bankruptcy Court by Final Order.



                                       - 15 -<PAGE>




              81.  "Scheduled"  means,  with  respect  to  any   Claim   or
         Interest, the status and amount, if any, of such Claim or Interest
         as set forth in the Schedules.

              82.  "Schedules"  means   the   schedules   of   assets   and
         liabilities  and  the statements of financial affairs filed in the
         Bankruptcy Court by CBC on  or  about  August  8,  1994,  as  such
         schedules  or  statements  have  been or may be further amended or
         supplemented from time to time in accordance with Bankruptcy  Rule
         1009.

              83.  "Secured  Claim"  means  a  Claim  secured by a security
         interest in or lien upon property of the Estate to the  extent  of
         the  value,  as of the Consummation Date, or such later date as is
         established by the Bankruptcy Court, of such interest or  lien  as
         determined  by  a  Final Order of the Bankruptcy Court pursuant to
         section 506 of the Bankruptcy Code or as otherwise agreed upon  in
         writing by CBC and the holder of such Claim, subject to the effect
         of an election under section 1111(b)(2) of the Bankruptcy Code.

              84.  "Securities Class Action" means the  First  Consolidated
         and  Amended Class Action Complaint filed May 15, 1995 and pending
         in  the  United  States  District  Court  for  the   District   of
         Massachusetts,   Civil  Action  No.  93-12486-REK,  titled  In  re
         Cambridge Biotech Corp. Securities Litigation.

              85.  "Securities Class Claims" means  all  Claims  that  have
         been  or  could have been asserted against CBC by Persons eligible
         for inclusion  in  the  Securities  Settlement  Class,  including,
         without limitation, any and all claims reflected in the Securities
         Class Proof of Claim, whether or not  such  Persons  elect  to  be
         excluded  from  the  settlement  embodied  in the Securities Class
         Settlement Agreements in accordance with the "opt-out"  procedures
         established by the District Court.

              86.  "Securities  Class  Plaintiffs"  means the plaintiffs in
         the  Securities  Class  Action  and  all  other  members  of   the
         Securities Settlement Class.

              87.  "Securities  Class Proof of Claim" means the Class Proof
         of Claim filed on December 15, 1994, in the  Bankruptcy  Court  on
         behalf of the Securities Settlement Class.

              88.  "Securities    Class    Settlement   Agreements"   means
         collectively (a) the Agreement Of Partial Settlement dated  as  of
         June  19,  1995  among the Securities Class Plaintiffs, certain of
         the Securities Class Settling Officers and Directors, and National
         Union;  (b)  the Agreement and Release dated as of October 5, 1995
         among CBC, the Securities Class Settling Officers  and  Directors,
         and  National  Union;  and  (c)  the  Stipulation And Agreement Of
         Partial Settlement  dated  as  of  October  6,  1995  between  the
         Securities Class Plaintiffs and CBC.



                                       - 16 -<PAGE>




              89.  "Securities Class Settling Officers and Directors" means
         the individual defendants named in the  Securities  Class  Action,
         together  with  certain  other  present  and  former  officers and
         directors  of  CBC  who  are  parties  to  the  Securities   Class
         Settlement Agreements.

              90.  "Securities  Settlement  Class"  means  all  persons  or
         entities who purchased CBC's stock from and including February 28,
         1992  through May 9, 1994, and were allegedly damaged thereby, but
         excluding  CBC,  the  Securities  Class  Settling   Officers   and
         Directors  and the members of their immediate families, Deloitte &
         Touche, and parents, subsidiaries and affiliates,  successors  and
         assigns  of  CBC  or  of  Deloitte  & Touche, and their respective
         officers and directors.

              91.  "Senior Executives Stock Options"  means  stock  options
         issued  to John Scott, Jeffrey T. Beaver, and Alison Taunton-Rigby
         after the Petition Date  that  are  to  be  converted  as  of  the
         Consummation  Date  into  options  to acquire shares of New Common
         Stock, and are to be covered by the New  Management  and  Employee
         Common Stock Reserve.

              92.  "Signet" means Signet Bank/Maryland.

              93.  "Signet  Collateral"  means  the Maryland Real Estate in
         which CBC granted Signet mortgages  to  secure  CBC's  obligations
         under  the Signet Loan Documents, to the extent that such Maryland
         Real Estate is and remains encumbered by a valid, enforceable, and
         perfected  mortgage  lien  of  Signet,  if  any, in CBC's Estate's
         interest in  such  property,  that  is  not  avoidable  under  the
         Bankruptcy Code or applicable non-bankruptcy law.

              94.  "Signet   Loan   Documents"  means  that  certain:   (i)
         Promissory Note dated December 21, 1979 in the original  principal
         amount  of $703,000, (ii) Deed of Trust Note dated August 28, 1989
         in the original principal amount of $4,680,000, and (iii) any  and
         all  documents  evidencing  or  securing  the indebtedness covered
         thereby, including all amendments thereto.

              95.  "Signet  Secured  Claim"  means  the  Secured  Claim  of
         Signet.

              96.  "Unit"  means  a  unit  consisting  of  one share of New
         Common Stock and one Warrant entitling the holder to purchase  one
         share of New Common Stock.

              97.  "Unsecured   Claim"   means  a  Claim  that  is  not  an
         Administrative Claim, Priority Tax Claim,  Other  Priority  Claim,
         Secured  Claim, Securities Class Claim, or Other Equity Securities
         Claim.

              98.  "Warrant" means a warrant entitling the  holder  thereof
         to  purchase one share of New Common Stock as described in Section
         IV.E.

                                       - 17 -<PAGE>




         C.   Rules Of Interpretation 

              For purposes of the Plan (a) any reference in the Plan  to  a
         contract,  instrument,  release,  indenture, or other agreement or
         documents being in a particular form or on  particular  terms  and
         conditions means that such document shall be substantially in such
         form or substantially  on  such  terms  and  conditions,  (b)  any
         reference  in the Plan to an existing document or exhibit filed or
         to be filed means such document or exhibit as it may have been  or
         may  be  amended,  modified, or supplemented, (c) unless otherwise
         specified, all references  in  the  Plan  to  Sections,  Articles,
         Schedules,  and  Exhibits  are  references  to Sections, Articles,
         Schedules, and Exhibits of or to the Plan, (d) the words  "herein"
         and  "hereto"  refer  to the Plan in its entirety rather than to a
         particular portion of the  Plan,  (e)  captions  and  headings  to
         Articles  and  Sections  are inserted for convenience of reference
         only and are not intended to  be  a  part  of  or  to  affect  the
         interpretation  of  the  Plan,  and  the rules of construction set
         forth in section 102 of the Bankruptcy Code and in the  Bankruptcy
         Rules shall apply.

         D.   Computation Of Time 

              In  computing any period of time prescribed or allowed by the
         Plan, unless  otherwise  expressly  provided,  the  provisions  of
         Bankruptcy Rule 9006(a) shall apply.


                                     ARTICLE II
                       CLASSIFICATION OF CLAIMS AND INTERESTS

         A.   Introduction 

              All  Claims  and  Interests, except Administrative Claims and
         Priority Tax Claims, are placed in the Classes  set  forth  below.
         In  accordance  with  section  1123(a)(1)  of the Bankruptcy Code,
         Administrative Claims and Priority Tax Claims, as  defined  below,
         have not been classified.

              A  Claim  or Interest is placed in a particular Class only to
         the extent that the Claim or Interest falls within the description
         of  that  Class,  and is classified in other Classes to the extent
         that any portion  of  the  Claim  or  Interest  falls  within  the
         description of such other Classes.

              A  Claim is also placed in a particular Class for the purpose
         of receiving distributions pursuant to the Plan only to the extent
         that  such  Claim is an Allowed Claim in that Class and such Claim
         has not been paid, released, or otherwise  settled  prior  to  the
         Consummation Date.





                                       - 18 -<PAGE>




         B.   Unclassified Claims (not entitled to vote on the Plan) 

              1.   Administrative Claims

              2.   Priority Tax Claims 


         C.   Unimpaired Class Of Claims (not entitled to vote on the Plan)  

              1.   Class 1:  Other Priority Claims 

                             Class 1 consists of all Other Priority Claims.

              2.   Class 3:  General  Unsecured  Claims  Less Than Or Equal
                             To $500

                             (Convenience Class) 

                             Class 3 consists of all Unsecured Claims  less
                             than or equal to $500.

         D.   Impaired Classes Of Claims (entitled to vote on the Plan)  

              1.   Class 2:  Secured Claims 

                             Class   2   consists  of  all  Secured  Claims
                             including the Signet Secured Claim  and  Other
                             Secured  Claims,  if  any.   Each  holder of a
                             Class 2 Secured Claim shall be  treated  as  a
                             separate  class  for  all  purposes  under the
                             Plan.

              2.   Class 4:  All Other General Unsecured Claims      

                             Class  4  consists  of  all  Unsecured  Claims
                             exceeding $500.

              3.   Class 5:  Securities Class Claims

                             Class  5  consists  of  all  Securities  Class
                             Claims.

         E.   Impaired Class Of Interests (entitled to vote on the Plan) 

              1.   Class 6:  Old Common Stock Interests

                             Class 6 consists of all Interests with respect
                             to Old Common Stock.







                                       - 19 -<PAGE>




                                     ARTICLE III
                         TREATMENT OF CLAIMS AND INTERESTS 

         A.   Unclassified Claims 

              1.   Administrative Claims 

              On   the   Consummation   Date,  or  as  soon  thereafter  as
         practicable, a holder of an  Allowed  Administrative  Claim  shall
         receive  in  full satisfaction, settlement, release, and discharge
         of and in exchange for such Allowed Administrative Claim, (a) Cash
         equal  to the unpaid portion of such Allowed Administrative Claim,
         except that, at the option of Aquila, Postpetition Incentive Stock
         Claims  may  be  paid  in whole or in part in New Common Stock and
         Senior Executives Stock Options shall be converted into options to
         acquire  New  Common  Stock issuable out of the New Management and
         Employee Common Stock Reserve, or (b) such other treatment  as  to
         which  CBC  or  Aquila  and  such holder shall have agreed upon in
         writing; provided, however,  that  Allowed  Administrative  Claims
         with respect to liabilities incurred by CBC in the ordinary course
         of its business during the Chapter 11 Case shall be paid by Aquila
         in  the  ordinary  course of business in accordance with the terms
         and conditions of any agreements relating thereto.

              2.   Priority Tax Claims 

              On  the  Consummation  Date,  or  as   soon   thereafter   as
         practicable,  a  holder  of an Allowed Priority Tax Claim shall be
         entitled to receive in full satisfaction, settlement, release, and
         discharge  of and in exchange for such Allowed Priority Tax Claim,
         either, at the option of CBC or Aquila,  (a)  Cash  equal  to  the
         unpaid portion of such Allowed Priority Tax Claim, or (b) deferred
         Cash payments in an aggregate principal amount equal to the unpaid
         portion  of  such Allowed Priority Tax Claim plus interest thereon
         at a rate to be determined by the Bankruptcy Court  (estimated  to
         be   approximately   ten   percent   (10%)  per  annum)  from  the
         Consummation Date through the date of payment thereof, or (c) such
         other  treatment  as  to which CBC or Aquila and such holder shall
         have agreed upon in writing.  If deferred Cash payments  are  made
         to  a  holder  of  an  Allowed  Priority  Tax  Claim,  payments of
         principal  shall  be  made  in  annual  installments,  each   such
         installment  amount  being  equal  to  ten  percent  (10%) of such
         Allowed Priority Tax Claim plus accrued and unpaid  interest  with
         the  first  payment  to be due on the Consummation Date or as soon
         thereafter as practicable, and subsequent payments to  be  due  on
         the anniversary of the first payment date or as soon thereafter as
         is practicable; provided, however, that any installments remaining
         unpaid  on  the  date  that  is  six  (6)  years after the date of
         assessment of the tax that is the basis for the  Allowed  Priority
         Tax  Claim  shall be paid on the first Business Day following such
         date, together with any accrued and unpaid interest to the date of
         payment;  and, provided further, that Aquila reserves the right to
         pay any Allowed Priority Tax Claim, or any  remaining  balance  of
         any  Allowed  Priority  Tax Claim, in full at any time on or after

                                       - 20 -<PAGE>




         the Consummation Date without premium or  penalty;  and,  provided
         further,  that no holder of an Allowed Priority Tax Claim shall be
         entitled to any payments on account of any  pre-Consummation  Date
         interest  accrued  on  or  penalty arising after the Petition Date
         with respect to or in connection with such  Allowed  Priority  Tax
         Claim.

         B.   Unimpaired Class Of Claims 

              1.   Class 1:  Other Priority Claims 

              On   the   Consummation   Date,  or  as  soon  thereafter  as
         practicable, a holder of an Allowed Class 1 Claim shall receive in
         full  satisfaction,  settlement,  release, and discharge of and in
         exchange for such Allowed Class 1 Claim  (a)  Cash  equal  to  the
         unpaid  amount  of  such  Allowed Class 1 Claim; or (b) such other
         treatment as to which CBC or Aquila and  such  holder  shall  have
         agreed  upon  in  writing;  or  (c)  at the option of Aquila, such
         Claims shall be Reinstated.

              2.   Class 3:  General Unsecured Claims Less  Than  Or  Equal
                             To $500 

              A  holder  of an Allowed Class 3 Claim shall receive, in full
         satisfaction,  settlement,  release,  and  discharge  of  and   in
         exchange  for  such  Allowed Class 3 Claim, Cash payments totaling
         100% of the unpaid portion of such Allowed Class 3 Claim,  payable
         on the Consummation Date, or as soon thereafter as practicable.

         C.   Impaired Classes Of Claims 

              1.   Class 2:  Secured Claims 

              Class 2.01 Signet Secured Claim

              In  full  satisfaction, settlement, release, and discharge of
         and in exchange for its Allowed Class 2.01 Claim and any  and  all
         other  Claims  of  Signet,  secured  or unsecured, Signet shall be
         entitled to receive either:  (1) $4,200,000 upon a  cash  sale  of
         the  Maryland  Real  Estate  to  the Retroviral Business Buyer; or
         (2) a  promissory  note  from  Aquila  in  the  original  sum   of
         $4,200,000, payable on the following terms and conditions:

              a.   The  note  shall be issued on the Consummation Date, and
         shall mature five (5) years thereafter.  Interest shall be payable
         on  the  unpaid  principal  balance of the note at a variable rate
         equal to Signet prime plus two (2) percentage  points.   Prior  to
         maturity,   level  monthly  payments  of  principal  and  interest
         (subject  to  adjustment  for  interest  rate  changes)  shall  be
         required  in an amount sufficient to amortize principal fully on a
         direct reduction basis over fifteen (15) years.  The note  may  be
         prepaid at any time without premium or penalty.



                                       - 21 -<PAGE>




              b.   To  secure the indebtedness evidenced by the note Signet
         shall retain its mortgage liens on the Maryland Real Estate except
         that  the  mortgages,  as amended and restated, shall provide that
         the full note  indebtedness  shall  be  secured  by  each  of  the
         separate    parcels    without    limitations   on   full   cross-
         collateralization.

              c.   The note, mortgages and other documentation with respect
         to  the  transaction  shall contain other customary terms mutually
         agreeable to the parties, and shall provide further that:

                   (i)  Aquila shall direct tenants to  remit  rents  to  a
         lockbox  in  the name of Aquila but under Signet's control; Signet
         shall remit to Aquila monthly all  rents  received  in  excess  of
         monthly Signet debt service;

                   (ii) Aquila shall have the right to sell either the Taft
         Court or Gude Drive  properties  included  in  the  Maryland  Real
         Estate  and  to  obtain a release of Signet's mortgage lien to the
         property to be sold if the purchase price is  not  less  than  the
         following   amounts:   Taft  Court  -  $1,900,000;  Gude  Drive  -
         $3,400,000; provided all net proceeds from the sale, after closing
         adjustments and sale expenses, are paid over to Signet and applied
         to the note; and

                   (iii)     Signet   shall   execute    reasonable    non-
         disturbance agreements with respect to the lease to be executed by
         the Retroviral Business Buyer, provided  the  lease  is  on  terms
         substantially  similar to those set forth in Exhibit E to the Plan
         and the prospective tenant is reasonably credit-worthy in Signet's
         reasonable  opinion.   Signet  will consider in good faith and not
         unreasonably refuse to consent to any requests for non-disturbance
         agreements made by other tenants at the Maryland Real Estate.

              d.   If the Consummation Date does not occur by September 30,
         1996, then, in addition to the note described herein, Signet shall
         be  entitled  to  receive  interest  on  $4,200,000 from and after
         September 30, 1996, at a variable rate equal  to  Signet's  prime,
         payable  monthly.   If  the  Consummation  Date  does not occur by
         December 31, 1996, Signet's  agreement  to  accept  the  foregoing
         treatment of its Claims shall expire.

              Classes 2.02 et seq.  Other Secured Claims

              Each  Other  Secured  Claim, if any, shall be classified as a
         subclass under Class 2 (which for all purposes, including  voting,
         under the Plan shall be considered a separate class).

              On   the   Consummation   Date,  or  as  soon  thereafter  as
         practicable, the holder of an Allowed Class 2.02  Claim,  in  full
         satisfaction, settlement, release and discharge of and in exchange
         for such Allowed Class 2.02 Claim, shall, in the  sole  discretion
         of  Aquila,  (a)  retain its liens securing its Allowed Class 2.01
         Claim and receive deferred Cash payments  totaling  at  least  the

                                       - 22 -<PAGE>




         unpaid portion of such Allowed Class 2.02 Claim, of a value, as of
         the Consummation Date, of a  least  the  value  of  such  holder's
         interest  in  the Estate's interest in the collateral securing the
         Class 2.02 Claim, (b)  upon  abandonment  by  Reorganized  CBC  or
         Aquila  receive  the collateral securing the Class 2.02 Claim, (c)
         receive payments or liens amounting to the indubitable  equivalent
         of the value of such holder's interest in the Estate's interest in
         the collateral securing the Class 2.02 Claim, (d)  be  Reinstated,
         or  (e)  receive such other treatment as CBC and such holder shall
         have agreed upon in writing  as  announced  at  or  prior  to  the
         Confirmation Hearing.

              2.   Class 4:  General Unsecured Claims Exceeding $500 

                   A  holder  of  a Class 4 Claim (Allowed or Disputed), in
         full satisfaction, settlement, release, and discharge  of  and  in
         exchange  for  such  Class 4 Claim (to the extent such claim is or
         becomes an Allowed Class 4 Claim), may elect,  at  the  time  such
         holder  casts  its ballot, treatment under either Class 4 Option A
         or Class 4 Option B, as described below.  Any holder of a Class  4
         Claim  who  does not make such an election shall be deemed to have
         elected Class 4 Option B.

                   a.   Class 4 Option A.

                   A holder electing treatment under Class 4 Option A shall
         receive  Cash  on the Consummation Date, or as soon as practicable
         thereafter, equal to fifty-one percent (51%) of the unpaid portion
         of  such  Allowed  Class  4 Claim (the "Claim Settlement Amount");
         provided, however, that if the total amount of Cash  distributable
         on account of all Allowed Class 4 Claims electing Class 4 Option A
         exceeds $2,000,000, then any holder of an Allowed  Class  4  Claim
         electing Class 4 Option A shall receive instead its Pro Rata share
         (based on the amount of its Allowed Class 4 Claim in  relation  to
         all  Allowed  Class  4  Claims  electing  Class  4  Option  A)  of
         $2,000,000 in Cash, payable on the Consummation Date, or  as  soon
         as  practicable  thereafter,  plus  shares  of  New  Common  Stock
         (together with one (1) Right  per  share),  distributable  on  the
         Initial  Distribution  Date, or as soon as practicable thereafter,
         of a value (exclusive of  the  value  of  the  Rights),  based  on
         Reorganization  Value  equal  to  one  hundred thirty-five percent
         (135%) of the Cash Deficiency (as defined below) to the extent the
         Cash  Deficiency is equal to or less than five percent (5%) of the
         Allowed Claim, and one hundred forty-five percent  (145%)  of  the
         Cash Deficiency, to the extent the Cash Deficiency is greater than
         five percent (5%) and less than ten percent (10%) of  the  Allowed
         Claim,   and   one  hundred  sixty  percent  (160%)  of  the  Cash
         Deficiency, to the extent the  Cash  Deficiency  is  equal  to  or
         greater than ten percent (10%) and less than fifteen percent (15%)
         of the Allowed Claim, and one hundred eighty-five  percent  (185%)
         of the Cash Deficiency, to the extent the Cash Deficiency is equal
         to or greater than fifteen percent (15%)  of  the  Allowed  Claim.
         Cash  Deficiency  shall  mean  the  difference  between  the Claim
         Settlement  Amount  and  the  holder's  Pro  Rata  share  of   the

                                       - 23 -<PAGE>




         $2,000,000  in  Cash  available  to  be paid on account of Allowed
         Class 4 Claims electing Class 4 Option A.

                   b.   Class 4 Option B.

                   A holder electing treatment under Class 4 Option B shall
         receive   on   the  Initial  Distribution  Date,  or  as  soon  as
         practicable thereafter, shares of New Common  Stock  of  a  value,
         based  on  Reorganization  Value,  equal in amount to the holder's
         Allowed Class 4 Claim.

                   c.   Rights to Accompany New Common Stock, Whether Under
         Option A or Option B.

                   Each  share of New Common Stock to be distributed to the
         holders of Allowed Class 4 Claims, whether the holder has  elected
         Class  4  Option A or Class 4 Option B shall carry with it one (1)
         Right, provided, however, that Rights distributed on  the  Initial
         Distribution  Date  shall  be  exercisable  only during the Rights
         Exercise Period, and no Rights shall be distributed on account  of
         any  Disputed  Class 4 Claim that becomes an Allowed Class 4 Claim
         only after the Initial Distribution Date.

                   d.   Issuance  of  New  Common  Stock  and   Rights   to
         Disbursing Agent and Distribution Reserve.

                   On  the Consummation Date shares of New Common Stock and
         Rights shall be issued to the Disbursing Agent, for the benefit of
         the holders of Class 4 Claims, in sufficient number to satisfy the
         requirements of Class 4 Option A and Class 4 Option B, taking into
         account  all  Allowed  Class  4  Claims  and  all Disputed Class 4
         Claims, as provided in Section X  hereof.   If  fifty-one  percent
         (51%)  of  the  aggregate  amount  of Allowed and Disputed Class 4
         Claims electing Class 4  Option  A  exceeds  $2,000,000  (or  such
         higher  amount  as CBC, in its discretion, is prepared to fund, if
         any), no distribution of New Common Stock  (or  Rights)  shall  be
         made  to  any  holder electing Class 4 Option A until such time as
         the amount of all Disputed Claims electing Class 4  Option  A  are
         determined  to  be  Allowed Claims or Disallowed Claims, provided,
         however, that at any time prior to the time  all  Disputed  Claims
         electing  Class  4  Option  A  are so determined, any holder of an
         Allowed Claim electing Class 4 Option A may by written  notice  to
         CBC  prior  to  the  Consummation  Date,  or  to  Aquila after the
         Consummation Date, elect to accept New Common Stock  (and  Rights)
         in  full  satisfaction  of  its  then  outstanding Cash Deficiency
         (computed based on Allowed Claims  and  Disputed  Claims)  and  to
         waive  any  right  to receive Cash if and when Disputed Claims are
         disallowed.  The amount of New Common Stock to  which  the  holder
         will  be entitled shall be computed in accordance with paragraph a
         ("Class 4 Option A") above, except that "Cash Deficiency" shall be
         computed  as described in this paragraph d.  Any Cash so waived by
         the holder shall be retained by Aquila.  The notice shall be  sent
         to  CBC  or  Aquila, as the case may be, at Biotechnology Research


                                       - 24 -<PAGE>




         Park, 365  Plantation  Street,  Worcester,  MA  01605-2376,  Attn:
         Corporate Secretary.

              3.   Class 5:  Securities Class Claims 

              In  full  satisfaction, settlement, release, and discharge of
         and in exchange for the Class 5  Securities  Class  Claims,  there
         shall  be issued to the Disbursing Agent on the Consummation Date,
         or as soon as practicable  thereafter,  for  the  benefit  of  the
         beneficial holders of Class 5 Claims:

              a.   1,250,000 shares of New Common Stock; and

              b.   One (1) Right for each share so issued.

              CBC  shall  also  permit  the  Securities Class Plaintiffs to
         prosecute CBC's claims against CBC's former auditors, Deloitte and
         Touche,  at  their  own expense, subject to CBC's right to receive
         10% of the proceeds recovered thereon net of litigation  expenses,
         all  as  more  particularly  described  in  the  Securities  Class
         Settlement Agreements.

              On the Initial Distribution Date, or as soon  as  practicable
         thereafter,  the  Disbursing Agent shall distribute to "Authorized
         Claimants" their respective shares of New Common Stock and  Rights
         issued on the Consummation Date to the Disbursing Agent on account
         of Securities Class Claims.  The  New  Common  Stock,  Rights  and
         other  consideration  payable  or  distributable to the Securities
         Settlement Class shall be distributed in the manner and  according
         to  the  procedures  set  forth in the Securities Class Settlement
         Agreements.  Rights distributed on the Initial  Distribution  Date
         shall  be  exercisable only during the Rights Exercise Period.  No
         Rights shall be distributed to  any  Securities  Settlement  Class
         member  who  is  not  an  Authorized  Claimant  as  of the Initial
         Distribution Date.

              In settlement of claims against the Securities Class Settling
         Officers and Directors, the Securities Settlement Class also shall
         be entitled to receive $1,050,000 in cash from an insurance policy
         insuring  the Securities Class Settling Officers and Directors, as
         provided in the Securities Class Settlement Agreements.

              Any holder of a Class 5 Claim that elects,  pursuant  to  the
         procedures  established by the District Court, to be excluded from
         the  settlement  embodied  in  the  Securities  Class   Settlement
         Agreements  shall be entitled to receive no distribution under the
         Plan or the  Securities  Class  Settlement  Agreements;  provided,
         however, that if a timely filed proof of claim has been filed with
         respect to such  holder's Class 5 Claim, other than the Securities
         Class  Proof of Claim, and such Claim is allowed by the Bankruptcy
         Court, the holder shall be entitled to receive its Pro Rata  share
         of  the  New  Common  Stock and Rights issued in settlement of all
         Class 5 Claims  as  if  such  holder  had  not  opted-out  of  the
         settlement,  but no other property.  For purposes of distributions

                                       - 25 -<PAGE>




         on Class 5 Claims, a holder's Pro Rata share shall  be  calculated
         in  the  manner  set  forth  in  the  Securities  Class Settlement
         Agreements.

         D.   Impaired Class Of Interests 

              1.   Class 6:  Old Common Stock Interests 

              In full satisfaction, settlement, release, and  discharge  of
         and  in exchange for all Class 6 Old Common Stock Interests, there
         shall be issued to the Disbursing Agent, on the Consummation Date,
         or  as  soon  as  practicable  thereafter,  for the benefit of the
         holders of Class 6 Old Common Stock Interests:

                   a.   3,750,000 shares of New Common Stock, less  (i) the
         number  of  shares  required  to  be  issued  on  account  of  the
         Postpetition  Incentive  Stock  Claims  under   the   Postpetition
         Incentive  Stock  Programs, and (ii) the number of shares required
         to be issued on account of Allowed Class 4 Claims; and

                   b.   one (1) Right for each share of New Common Stock so
         issued.

              On  the  Initial Distribution Date, or as soon as practicable
         thereafter, the Disbursing Agent shall distribute to  the  holders
         of Allowed Class 6 Old Common Stock Interests their respective Pro
         Rata  share of the shares of New Common Stock and Rights issued on
         the  Consummation  Date  to the Disbursing Agent on account of Old
         Common  Stock  Interests.   Rights  distributed  on  the   Initial
         Distribution  Date  shall  be  exercisable  only during the Rights
         Exercise Period.  No Rights shall be distributed on account of any
         Disputed  Class  6  Interest that becomes an Allowed Interest only
         after the Initial Distribution Date.

              If any Other Equity Securities Claims have been timely filed,
         the  Bankruptcy  Court,  at  the  request  of CBC or Aquila, shall
         estimate such Claims  for  voting  and  allowance  purposes  under
         section  502(c)  of  the Bankruptcy Code.  If the Bankruptcy Court
         allows any Other Equity Securities Claims  in  an  amount  greater
         than  $0,  such  Claims shall be treated for purposes of the Plan,
         including voting and distribution, as Class  6  Old  Common  Stock
         Interests, in accordance with the provisions of section 510 of the
         Bankruptcy Code,  and  the  Bankruptcy  Court  shall  convert  the
         allowed  amount of such Claims into Old Common Stock on such basis
         as may be equitable.  No distributions shall be made on account of
         outstanding  options,  warrants,  or  other rights to purchase Old
         Common Stock which remain  unexercised  as  of  the  Record  Date,
         except  as may otherwise be provided in the Postpetition Incentive
         Stock  Programs,  or  with  respect  to  Senior  Executives  Stock
         Options,  which  are  to be converted into options with respect to
         New Common Stock issuable out of the New Management  and  Employee
         Common Stock Reserve.



                                       - 26 -<PAGE>




                                     ARTICLE IV
                        MEANS FOR IMPLEMENTATION OF THE PLAN 

         A.   Sale of Enterics Business

              Prior  to  the  Confirmation Date, CBC will sell the Enterics
         Business to the Enterics Business Buyer, free and clear of  liens,
         encumbrances,  Claims,  and  Interests, except as may otherwise be
         provided in the Enterics Business  Purchase  Agreement  (or  other
         sale  documents  between CBC and the Enterics Business Buyer), the
         Plan, and the Confirmation Order.

         B.   Formation of Aquila And Distribution Of Certain Assets 

              Aquila has been organized by CBC under Delaware law.  The New
         Common  Stock  and related Rights shall be issued and delivered to
         the Disbursing Agent on the Consummation Date in exchange for  all
         Interests  in  CBC  and  certain  Claims  against CBC as described
         elsewhere in this Plan,  and  CBC  shall  become  a  wholly  owned
         subsidiary of Aquila.  The number of shares of New Common Stock to
         be issued to the Disbursing Agent shall be 5,000,000 shares of New
         Common Stock. 

              Each  share of New Common Stock so issued shall carry with it
         one (1) Right (provided  that  Rights  not  exercised  during  the
         Rights  Exercise  Period  shall  expire, and may not thereafter be
         exercised).

              On the Consummation Date, the assets of the Biopharmaceutical
         Business shall be distributed to Aquila as the sole stockholder of
         CBC.

         C.   Sale Of Retroviral Business 

              1.   Sale of CBC Stock 

              Immediately after giving effect to the transactions described
         in  Sections  IV.A  and  B, Aquila will sell all of the issued and
         outstanding stock of CBC to bioMerieux pursuant to the  Retroviral
         Business  Purchase  Agreement,  or  to another Retroviral Business
         Buyer pursuant  to  the  Retroviral  Business  Purchase  Agreement
         Bidding  Procedures.   Reorganized  CBC shall retain assets of the
         Retroviral Business free and clear of liens, encumbrances,  Claims
         and  Interests  except  as  otherwise  provided  in the Retroviral
         Business Purchase  Agreement  (or  other  sale  documents  between
         Aquila  and  the  Retroviral  Business  Buyer),  the  Plan and the
         Confirmation Order.

         D.   Tax Issues 

              The transactions described in this Article will be structured
         to  the  extent  possible so as to preserve the net operating loss
         carryover of CBC  for  Aquila,  to  the  extent  not  consumed  in
         offsetting  income that may be realized by CBC or Aquila by reason

                                       - 27 -<PAGE>




         of the sale of assets prior or pursuant to the Plan.  The sale  of
         stock  in  CBC  to the Retroviral Business Buyer is intended to be
         treated as if CBC had sold its assets  and  then  liquidated  into
         Aquila  pursuant  to  section  338(h)(10)  of the Internal Revenue
         Code.  It is intended that the distribution of assets from CBC  to
         Aquila  pursuant  to the Plan will not result in taxable income to
         either corporation, and that Aquila will succeed to CBC's adjusted
         tax basis in such assets.

         E.   Rights Offering 

              1.   Rights 

              Each  share  of  New Common Stock distributed pursuant to the
         Plan on account of an Allowed Class 4 or Class 5 Claim, an Allowed
         Class  6  Interest  or  a Postpetition Incentive Stock Claim shall
         carry with it  a  transferable  right  (a  "Right").   Each  Right
         entitles the holder to purchase one (1) Unit, each Unit consisting
         of one share of New Common Stock and one warrant to  purchase  one
         (1)  share  of  New Common Stock (a "Warrant").  In addition, each
         holder of a Right who has  fully  exercised  his  basic  right  to
         purchase  one  Unit  for  each Right received (an "Eligible Rights
         Holder") also has the right to  purchase  any  desired  number  of
         Units  that  have  not been subscribed for by the holders of other
         Rights (the "Oversubscription Rights"), subject  to  proration  if
         oversubscribed.  The Unit subscription price under the Rights will
         be a dollar amount up to 100%  of  the  Reorganization  Value,  as
         determined  by  Aquila.   However,  Aquila  reserves  the right to
         reduce  the  subscription  price  for   the   Units   in   certain
         circumstances.

              The  Rights  will  be evidenced by a certificate (the "Rights
         Certificate").  Rights can be exercised  only  to  purchase  whole
         Units.   No  fractional  Rights  Certificates will be issued.  The
         Rights may be exercised by mailing or delivering a  duly  executed
         and  completed  Rights  Certificate,  together with payment of the
         full subscription price for each Unit purchased  under  the  basic
         Right, and a subscription for such portion of the Oversubscription
         Rights as the holder may elect to subscribe  for,  to  the  Rights
         Agent.   The  Rights  Certificates  must be received by the Rights
         Agent on or before the end of the Rights Exercise Period, and  any
         subscriptions  received  after  that date may not be honored.  All
         unexercised Rights  Certificates  will  expire  after  the  Rights
         Exercise  Period  and  will  become  worthless.   The  Rights  and
         Warrants  will  be  issued  pursuant  to  a  Rights  and  Warrants
         Agreement  with  a Rights Agent substantially in the form attached
         as Exhibit F hereto.

              2.   Rights Exercise Period; Extension 

              On the Initial Distribution Date, shares of  the  New  Common
         Stock  will be distributed to holders of Allowed Class 4 and Class
         5 Claims, and  Allowed  Class  6  Interests,  and  on  account  of
         Postpetition  Incentive  Stock  Claims.   Each share of New Common

                                       - 28 -<PAGE>




         Stock so distributed shall carry with it a Right to  purchase  one
         Unit,  which  shall  be  evidenced by a Rights Certificate.  These
         Rights will be exercisable at any time  after  distribution  until
         5:00  p.m. Eastern Time on the twentieth (20th) calendar day after
         the Initial Distribution Date, unless the period  of  exercise  is
         extended  prior  to such twentieth day at the option of Aquila for
         up to fifteen (15) additional calendar days  (including  any  such
         extension,  the  "Rights  Exercise  Period").   No  Rights  may be
         exercised after the Rights Exercise Period.

              If Aquila elects to extend the Rights Exercise Period  beyond
         the  initial  twenty  (20) days or to reduce the Unit subscription
         price pursuant to Section IV.E.4 below, it will cause  the  Rights
         Agent to promptly give written notice of such change to all record
         holders of Rights.  In  the  case  of  a  reduction  in  the  Unit
         subscription  price, Aquila will extend the Rights Exercise Period
         to the extent necessary so that it will end on a date not  earlier
         than  ten (10) calendar days after the date of notice of the price
         reduction.

              3.   Proration; Oversubscription Procedures 

              Within three (3) Business Days after expiration of the Rights
         Exercise Period, the Rights Agent will advise Aquila of the extent
         to which the Rights were subscribed for.

              To the extent that the rights were not fully  subscribed  for
         through the exercise of basic subscription Rights, within five (5)
         Business Days after expiration of the Rights Exercise Period,  the
         Rights   Agent   shall  notify  those  subscribers  who  exercised
         Oversubscription  Rights  of  the  additional  amount   of   Units
         allocated  to  them,  and  all  such  subscribers shall have until
         5:00 p.m. Eastern Time on the  tenth  (10th)  Business  Day  after
         expiration  of  the Rights Exercise Period to make full payment of
         the subscription price for each  Unit  subscribed  for  under  the
         Oversubscription Rights.

              If  the  aggregate number of Units subscribed for through the
         exercise of Oversubscription Rights is more  than  the  number  of
         Units   available  for  purchase,  the  available  Units  will  be
         apportioned among the Eligible Rights Holders  who  exercised  the
         Oversubscription  Rights  in  proportion  to  the  number of basic
         Rights originally issued by Aquila to, and exercised by,  each  of
         them  through  repeated  application  of  the  proration procedure
         described in the next  paragraph.   Each  time  the  procedure  is
         applied,  the "Number of Available Units" shall mean the number of
         Units not apportioned by  prior  applications  of  the  procedures
         described therein.

              The  Number of Available Units shall be apportioned among all
         those Eligible Rights Holders who have not  yet  been  apportioned
         (through  previous applications of this procedure) the full number
         of Units subscribed for by them in their respective  exercises  of
         Oversubscription  Rights.  Apportionment among them shall be based

                                       - 29 -<PAGE>




         on the ratio of the number of basic Rights  originally  issued  by
         Aquila to, and exercised by, each; provided that, if the number of
         Units so apportioned to any Eligible  Rights  Holder  exceeds  the
         number  of  Units  subscribed for by that Eligible Rights Holder's
         exercise of Oversubscription Rights, then the excess shall not  be
         apportioned,  and that Eligible Rights Holder shall thereafter not
         be apportioned  any  additional  Units  should  there  be  further
         applications  of this procedure.  This procedure shall be repeated
         until either (i) the Number of Available Units is zero, or (ii)  a
         sufficient  number  of  Units has been apportioned to all Eligible
         Rights Holders to satisfy all of their exercised  Oversubscription
         Rights, whichever occurs first.

              Notwithstanding  the  preceding  proration  procedures, in no
         event shall any Eligible Rights Holder be able to purchase through
         the  exercise of Oversubscription Rights a number of Units greater
         than the number which would result in that person or  the  members
         of  any  group  (as  such  term  is  used  in Rule 13d-5 under the
         Securities Exchange Act of 1934) of which it is a member owning of
         record  a  number  of  shares of New Common Stock equal to fifteen
         percent (15%) of the total of (i) the  number  of  shares  of  New
         Common  Stock  outstanding  on the last day of the Rights Exercise
         Period, plus (ii) the shares included in the  Units  purchased  in
         the  Rights  Offering  (but  before  taking  into  account  shares
         issuable upon exercise of the Warrants), plus (iii) the number  of
         shares  reserved  for issuance under options which are outstanding
         as of the last day of  the  Rights  Exercise  Period,  unless  the
         limitation  is waived by Aquila.  Any Eligible Rights Holder whose
         subscription would  otherwise  cause  it  to  exceed  the  fifteen
         percent  (15%)  limitation  shall have its subscription treated as
         having been for a number sufficient only to bring  it  to  fifteen
         percent (15%).

              4.   Reservation Of Right To Make Certain Changes 

              Aquila  reserves  the  right to alter the terms of the Rights
         Offering or the Rights or Warrants, in any respect, provided that,
         after  the Initial Distribution Date, it may not alter any term in
         a manner adverse to the interests of Rights  or  Warrant  holders.
         It  may enter into agreements with investors, including holders of
         Claims or Interests,  to  acquire  and  exercise  Oversubscription
         Rights  to  purchase  all  or a portion of the Units not otherwise
         subscribed for by exercise of the basic Rights.  The terms of  any
         such  agreements  may  vary.   However,  if  Aquila  negotiates  a
         transaction where the negotiated price for the Units is less  than
         the  Rights  subscription  price  set  forth  herein, Aquila shall
         reduce the subscription price  for  all  Units  purchased  in  the
         Rights  Offering  to  the same price per Unit negotiated with such
         investor(s) and written notice of such reduction and any necessary
         extension  of  the  Rights  Exercise  Period shall be given by the
         Rights Agent in accordance with Section  IV.E.2  above.   In  such
         event,  Aquila will recalculate the number of Units purchasable at
         the new subscription price  with  the  consideration  tendered  on
         Rights  already  exercised  and issue to the exercising holder the

                                       - 30 -<PAGE>




         larger number of Units, subject  to  proration  in  the  event  of
         oversubscription.

              5.   Transferability 

              Both the Rights Certificates and the Warrants shall be freely
         transferable.  The shares of New Common Stock included in the Unit
         and  received  upon  exercise  of  the  Warrant  shall  be  freely
         transferable. 

         F.   Directors And Officers 

              On the Consummation Date, the term of the  current  board  of
         directors  of CBC shall expire, and the individuals identified and
         set forth in the Disclosure Statement  shall  become  the  initial
         board  of  directors  of Aquila.  The board of directors of Aquila
         shall have the responsibility for  the  management,  control,  and
         operation of Aquila on and after the Consummation Date.

         G.   Revesting Of Assets 

              All  property  of  CBC  transferred  or  to be transferred to
         Aquila pursuant to the Plan shall vest in Aquila free and clear of
         all liens, encumbrances, Claims and Interests, except as otherwise
         expressly  provided  in  this  Plan  or  the  Confirmation  Order.
         Thereafter,  Aquila may operate its business and may use, acquire,
         and dispose of property free of any restrictions of the Bankruptcy
         Code,  the  Bankruptcy  Rules,  and the Bankruptcy Court.  Without
         limiting the foregoing, Aquila  may,  without  application  to  or
         approval by the Bankruptcy Court, pay fees that are incurred after
         the Confirmation Date for professional fees and expenses.

         H.   Substantial Contribution Compensation And Expenses Bar Date

              Any person or entity who  requests  compensation  or  expense
         reimbursement   for  making  a  substantial  contribution  in  the
         Chapter 11 Case pursuant to sections 503(b)(3), (4),  and  (5)  of
         the  Bankruptcy  Code  must  file  a request with the clerk of the
         Bankruptcy Court, on or before 4:00 p.m. Eastern Time on June  25,
         1996,  or  be  forever  barred  from  seeking such compensation or
         expense reimbursement.

         I.   Cancellation Of Old Common Stock

              On the Consummation Date,  the  Old  Common  Stock  Interests
         shall  be  deemed  cancelled  and  of  no further force and effect
         without further action on the part of the Bankruptcy Court or  any
         Person.   The  holders thereof shall have no rights against CBC or
         Aquila arising from or relating to such Old Common Stock,  or  the
         cancellation  thereof, except the rights provided under this Plan.
         Except to the extent otherwise provided for herein, any agreements
         entered into in connection herewith, or the Confirmation Order, as
         a condition to participating  in  distributions  under  the  Plan,
         within  two (2) years following the Consummation Date, a holder of

                                       - 31 -<PAGE>




         certificates  representing  shares  of  Old  Common  Stock   shall
         surrender  the share certificate or certificates representing such
         equity securities to the Disbursing Agent.

              Following the Consummation Date, holders of Old Common  Stock
         shall  receive,  from  the Disbursing Agent, specific instructions
         regarding the time and manner in which the stock certificates  are
         to  be surrendered.  Pending such surrender, such Old Common Stock
         shall be deemed cancelled and shall represent only  the  right  to
         receive  the  distributions  to which the holder is entitled under
         the Plan.  Failure to surrender shares of Old Common Stock  within
         two  (2)  years  from  the  Consummation  Date shall result in the
         treatment  of  the  distribution  attributable   thereto   as   an
         undeliverable  distribution,  in  accordance  with  Section  VII.G
         herein.  Any stock certificate which is lost,  stolen,  mutilated,
         or  destroyed,  shall be deemed surrendered when the holder of the
         Interest  based  thereon  delivers   to   the   Disbursing   Agent
         (i) evidence  satisfactory  to  the  Disbursing Agent of the loss,
         theft,  mutilation,  or  destruction  of  such  certificate,   and
         (ii) such  security  as may be required by the Disbursing Agent to
         hold the Disbursing Agent harmless with respect thereto.

         J.   Exclusivity Period

              CBC shall retain the exclusive right to amend or  modify  the
         Plan    and  to  solicit  acceptances  of  any  amendments  to  or
         modifications of the Plan,  through  and  until  the  Consummation
         Date.

         K.   Retained Litigation

              In accordance with section 1123(b)(3) of the Bankruptcy Code,
         and except as otherwise  provided  herein  or  in  the  Retroviral
         Business  Purchase Agreement, Aquila shall retain and may enforce,
         at  its  expense,  all  claims,  rights  of  action,  suits,   and
         proceedings,  whether  in  law  or  in  equity,  whether  known or
         unknown, that CBC or the  Estate  may  hold  against  any  entity.
         Aquila   or  any  of  its  successors  may  pursue  such  retained
         litigation claims in accordance with the best interests of  Aquila
         or its successors who hold such rights of action.

         L.   Effectuating Documents; Further Transactions

              The Chairman of the Board of Directors, the President, or any
         other appropriate officer of Aquila, or CBC, as the case  may  be,
         shall  be  authorized  to  execute,  deliver, file, or record such
         contracts, instruments, releases, indenture, and other  agreements
         or  documents,  and  take  such  actions  as  may  be necessary or
         appropriate to effectuate  and  further  evidence  the  terms  and
         conditions  of  the Plan.  The Secretary or Assistant Secretary of
         Aquila or CBC, as the case may be, shall be authorized to  certify
         or attest to any of the foregoing actions, if necessary.



                                       - 32 -<PAGE>




                                      ARTICLE V
                   ACCEPTANCE OR REJECTION OF THE PLAN; EFFECT OF
              REJECTION BY ONE OR MORE CLASSES OF CLAIMS OR INTERESTS 

         A.   Classes Entitled To Vote

              Each impaired Class shall be entitled to vote  to  accept  or
         reject  the  Plan.  Any unimpaired Class of Claims shall be deemed
         to have accepted the Plan and shall not be  entitled  to  vote  to
         accept or reject the Plan.

         B.   Class Acceptance Requirement

              Under  section 1126(c)  of  the  Bankruptcy Code, an impaired
         Class of Claims has accepted the Plan if the holders of  at  least
         two-thirds  (2/3) in dollar amount and more than one-half (1/2) in
         number of the Allowed Claims of such Class who have voted  on  the
         Plan, have voted to accept the Plan.

              Under  section 1126(d)  of  the  Bankruptcy Code, an impaired
         Class of Interests has accepted the Plan  if  the  holders  of  at
         least  two-thirds  (2/3)  in amount of the Interests of such Class
         who have voted on the Plan, have voted to accept the Plan.

         C.   Cramdown

              CBC hereby requests confirmation of the Plan, as  it  may  be
         modified   from   time  to  time,  under  section 1129(b)  of  the
         Bankruptcy Code, if necessary.


                                     ARTICLE VI
                           DESCRIPTION OF SECURITIES TO BE
                         ISSUED IN CONNECTION WITH THE PLAN 

         A.   New Common Stock 

              The principal terms of the New Common Stock to be  issued  by
         Aquila under the Plan shall be as follows:

              Authorization            30,000,000 shares

              Initial Issuance         5,000,000 shares

              Par Value                $.01 per share

              Voting                   One vote per share

              Preemptive Rights        None

              Transfer Limitations     None




                                       - 33 -<PAGE>




         B.   Rights

              Each  Right  shall  entitle  the  holder  thereof to purchase
         during the Rights Exercise Period (including  any  extension)  one
         (1)  Unit  (each  Unit  consisting  of one (1) share of New Common
         Stock and a Warrant to purchase one (1) additional  share  of  New
         Common Stock).

         C.   Units

              Each  Unit shall consist of one (1) share of New Common Stock
         having the terms described in Section VI.A above and a Warrant  to
         purchase  one  (1) additional share of New Common Stock having the
         rights described in Section VI.D below.   The  subscription  price
         per Unit shall be a dollar amount up to 100% of the Reorganization
         Value, as determined by Aquila.

         D.   Warrants

              The principal terms of the Warrants to be issued by Aquila in
         connection with the Plan are as follows:

              Initial Issuance         5,000,000 Warrants

              Warrant Exercise Period  The  Warrants are exercisable at any
                                       time after issuance.

              Expiration Date          The Warrants  expire  on  the  third
                                       anniversary     of    the    Initial
                                       Distribution Date.

              Warrant Exercise Price   From the commencement of the Warrant
                                       Exercise  Period  until the Warrants
                                       Expiration   Date,    the    Warrant
                                       Exercise  Price shall be 150% of the
                                       subscription price per Unit.

              Redemption               Aquila   may   redeem    outstanding
                                       Warrants  at  any time upon not less
                                       than  thirty  (30)   days'   written
                                       notice  at a price of $.10, provided
                                       that  the  Warrants   may   not   be
                                       redeemed  by  Aquila  prior  to  the
                                       Warrants Expiration Date, unless the
                                       Warrants  are  then  exercisable and
                                       the price of the  New  Common  Stock
                                       shall have been at least 150% of the
                                       Warrant Exercise  Price  for  twenty
                                       (20)   consecutive   Business   Days
                                       ending within ten (10) trading  days
                                       of   the   date  of  the  notice  of
                                       redemption.  If Aquila exercises its
                                       right  to  redeem  the Warrants, the
                                       Warrants will be  exercisable  until

                                       - 34 -<PAGE>




                                       4:00   p.m.   Eastern  Time  on  the
                                       Business Day  immediately  preceding
                                       the  date  fixed  for  redemption in
                                       such notice.  If any Warrant  called
                                       for  redemption  is not exercised by
                                       such  time,  it  will  cease  to  be
                                       exercisable, and the holders thereof
                                       will  be  entitled   to   only   the
                                       redemption   price.    The  exercise
                                       price and number of  shares  of  the
                                       New Common Stock or other securities
                                       issuable on exercise of the Warrants
                                       and  the redemption triggering price
                                       set  forth  above  are  subject   to
                                       adjustment in certain circumstances,
                                       including in the event  of  a  stock
                                       dividend,        stock        split,
                                       recapitalization,    reorganization,
                                       merger or consolidation of Aquila.

         E.   Registration/Listing

              The  New  Common  Stock and Warrants will be registered under
         Section 12(g) of the Securities Exchange Act  of  1934,  following
         the  Initial Distribution Date, and listing on the Nasdaq National
         Market will be sought.  The Rights and Units will be transferable,
         but will not be registered or listed for trading.


                                     ARTICLE VII
                         PROVISIONS GOVERNING DISTRIBUTIONS 

         A.   Date Of Distributions

              Distributions  under the Plan shall be made as provided under
         the other relevant provisions of the  Plan,  except  as  otherwise
         provided for herein or ordered by the Bankruptcy Court.

         B.   Interest On Claims

              Unless  otherwise  specifically  provided  for in the Plan or
         Confirmation Order, or  required  by  applicable  bankruptcy  law,
         interest  shall  not  accrue  on  Claims, and no holder of a Claim
         shall be entitled to interest accruing on or  after  the  Petition
         Date  on any Claim.  Interest shall not accrue or be paid upon any
         Disputed Claim in respect of the period from the Petition Date  to
         the  date  a  final distribution is made thereon if and after such
         Disputed Claim becomes an Allowed Claim.

         C.   Disbursing Agent

              The Disbursing Agent shall make  all  distributions  required
         under this Plan (subject to the provisions of Section VII hereof).
         The Disbursing Agent shall not be required to  give  any  bond  or

                                       - 35 -<PAGE>




         surety  or other security for the performance of its duties unless
         otherwise ordered  by  the  Bankruptcy  Court.   If  otherwise  so
         ordered,  all  costs and expenses of procuring any such bond shall
         be paid by Aquila.

         D.   Record Date For Distributions To Holders Of Old Common Stock

              At the close of business on the  Record  Date,  the  transfer
         ledgers  of  the Old Common Stock shall be closed, and there shall
         be no further changes in the record  holders  of  the  Old  Common
         Stock  and  the  Disbursing  Agent  shall  have  no  obligation to
         recognize any transfer of the Old Common Stock occurring after the
         Record  Date.   The  Disbursing Agent shall be entitled instead to
         recognize and deal for all  purposes  hereunder  with  only  those
         record  holders  stated on the transfer ledgers as of the close of
         business on the Record Date.

         E.   Means Of Cash Payment

              Cash payments made pursuant to this Plan  shall  be  in  U.S.
         funds,  by  the  means  agreed  to  by  the  payor  and the payee,
         including by check or wire transfer, or,  in  the  absence  of  an
         agreement,  such commercially reasonable manner as the payor shall
         determine in its sole discretion.

         F.   No Fractional Securities Issued; No Distribution For  Holders
              Who Would Receive Less Than Five Shares

              No  fractional  shares of New Common Stock, and no fractional
         Rights shall be issued or distributed under the  Plan  or  by  any
         Disbursing  Agent.  Each holder entitled under the Plan to receive
         New Common Stock or Rights shall receive the total number of whole
         New  Common  Stock  or Rights Certificates to which such holder is
         entitled.  Whenever any distribution to a particular holder  would
         otherwise  call for distribution under the Plan of a fraction of a
         share or Right, the Disbursing Agent shall allocate separately  to
         each  such  holder  one  whole  share  in  order of the fractional
         portion of their entitlements,  starting  with  the  largest  such
         fractional  portion,  until  all  remaining whole shares have been
         allocated.  Upon the allocation of a whole share, as the case  may
         be,  to  a  holder  in  respect  of  the fractional portion of its
         entitlement, such fractional portion shall be cancelled.   If  two
         or  more holders are entitled to equal fractional entitlements and
         the number of holders so entitled  exceeds  the  number  of  whole
         shares  which  remain  to be allocated, the Disbursing Agent shall
         allocate the remaining whole shares to such holders by random  lot
         or such other impartial method as the Disbursing Agent deems fair.
         One whole Right will then accompany each whole  share.   Upon  the
         allocation  of  all of the whole shares or Rights authorized under
         this Plan, all remaining fractional portions of  the  entitlements
         shall be cancelled and shall be of no further force and effect.




                                       - 36 -<PAGE>




              Any  holder of an Allowed Claim or Interest who would receive
         fewer than five (5) shares of New Common Stock and related  Rights
         shall not receive any distribution.

         G.   Delivery Of Distributions

              Distributions  to  holders  of  Allowed  Claims  and  Allowed
         Interests shall be  made  by  the  Disbursing  Agent  (a)  at  the
         addresses  set  forth on the proofs of claim filed by such holders
         (or at the last known addresses of such holders  if  no  proof  of
         claim  is  filed or if CBC or Aquila has been notified of a change
         of address), (b) at the addresses set forth in any written notices
         of  address  changes  delivered  to the Disbursing Agent after the
         date of any related proof of claim, (c) at the addresses reflected
         in  the  Schedules  if  no  proof  of claim has been filed and the
         Disbursing Agent has not received a written notice of a change  of
         address,  or  (d)  at  the  addresses  of  the  record  holders of
         Interests as of the Record Date.

              If any holder's distribution is returned as undeliverable, no
         further  distributions  to  such  holder  shall be made unless and
         until the Disbursing Agent  is  notified  of  such  holder's  then
         current  address,  at which time all missed distributions shall be
         made to such holder  without  interest.   Amounts  in  respect  of
         undeliverable  distributions  made  through  the  Disbursing Agent
         shall be returned to Aquila until such distributions are  claimed.
         All  claims  for  undeliverable  distributions shall be made on or
         before the second anniversary of  the  Consummation  Date.   After
         such  date,  all unclaimed property shall revert to Aquila and the
         claim of any holder or successor to such holder  with  respect  to
         such   property   shall   be   discharged   and   forever   barred
         notwithstanding any federal or state escheat laws to the contrary.


         H.   No Voting By Disbursing Agent

              Neither the Disbursing Agent, nor any other party,  shall  be
         entitled  to  vote  any shares of the New Common Stock held by the
         Disbursing  Agent,  whether  in  the   Distribution   Reserve   or
         otherwise.   In the event that any matter requires approval by the
         shareholders of Aquila prior to the distribution  or  cancellation
         of  all  shares  of New Common Stock held by the Disbursing Agent,
         the shares of New Common Stock held by the Disbursing Agent  shall
         be deemed only for voting purposes not to have been issued.


                                    ARTICLE VIII
               TREATMENT OF EXECUTORY CONTRACTS AND UNEXPIRED LEASES 

         A.   Assumed Contracts And Leases

              All  executory  contracts  and  unexpired leases specifically
         listed on the schedule of assumed contracts  and  leases  attached
         hereto  as  Exhibit  G shall be deemed automatically assumed as of

                                       - 37 -<PAGE>




         the Consummation Date.  The Confirmation Order shall constitute an
         order of the Bankruptcy Court approving such assumptions, pursuant
         to section 365 of the Bankruptcy Code.

              Each executory contract and unexpired lease that  is  assumed
         and relates to the use or occupancy of real property shall include
         (a) all modifications, amendments, supplements,  restatements,  or
         other  agreements  made  directly  or indirectly by any agreement,
         instrument, or other document  that  in  any  manner  affect  such
         executory  contract  or  unexpired  lease  and  (b)  all executory
         contracts  or  unexpired  leases  appurtenant  to  the   premises,
         including  all  easements,  licenses, permits, rights, privileges,
         immunities,  options,  rights  of  first  refusal,  powers,  uses,
         usufructs,  reciprocal  easement  agreements,  vaults,  tunnel  or
         bridge agreements or franchises, and any other interests  in  real
         estate  or  rights  in rem related to such premises, unless any of
         the foregoing agreements have been rejected pursuant  to  a  Final
         Order  of  the  Bankruptcy  Court  or is listed on the schedule of
         rejected contracts and leases attached hereto as Exhibit H.

         B.   Payments Related To Assumption  Of  Executory  Contracts  And
              Unexpired Leases; Bar to Pre-Confirmation Date Claims

              Any  monetary  amounts  by  which each executory contract and
         unexpired lease to be assumed under the Plan  may  be  in  default
         shall be satisfied, under section 365(b)(1) of the Bankruptcy Code
         by Cure.  Exhibit G sets forth as to each executory  contract  and
         unexpired  lease  whether  such  contract  or  lease  is, in CBC's
         opinion, in default, and the amount, if any, required to Cure.  By
         Order  dated May 9, 1996, the Bankruptcy Court established July 9,
         1996 as the deadline for  other  parties  to  such  contracts  and
         leases  to  file  objections to assumption (and, where applicable,
         assignment)  of  such  contracts   and   leases,   including   any
         disagreements  with CBC as to whether such contracts or leases are
         in default, the amount required to Cure, if any, and the  adequacy
         of  future  performance assurances, and any other objections.  Any
         party who fails to file such an objection timely is and  shall  be
         forever   barred   from   objecting   to  assumption  (and,  where
         applicable, assignment), and from asserting any claim arising  out
         of  a  default prior to the Confirmation Date; provided only that,
         as to any default acknowledged by CBC on Exhibit G, Cure shall  be
         made  in  accordance  with  the terms set forth on Exhibit G.  Any
         dispute regarding (i) whether or  not  an  executory  contract  or
         unexpired  lease  is  in default, (ii) the nature or the amount of
         any Cure,  (iii)  the  ability  of  Aquila  to  provide  "adequate
         assurance  of  future  performance" (within the meaning of section
         365 of the Bankruptcy Code) under the  contract  or  lease  to  be
         assumed,  or  (iv) any other matter pertaining to assumption (and,
         where applicable, assignment) shall be heard and determined by the
         Bankruptcy  Court,  and,  except  to the extent determination of a
         particular dispute is deferred with the consent of CBC,  all  such
         disputes  shall be determined no later than the Confirmation Date,
         and the  Confirmation Order shall constitute an order  determining
         all such disputes. 

                                       - 38 -<PAGE>




         C.   Rejected Contracts And Leases

              All  executory  contracts  and  unexpired leases specifically
         listed on the schedule of rejected contracts and  leases  attached
         hereto  as  Exhibit H shall be deemed automatically rejected as of
         the Consummation Date.  The Confirmation Order shall constitute an
         order  of the Bankruptcy Court approving such rejections, pursuant
         to section 365 of the Bankruptcy Code.

         D.   Bar To Rejection Damages

              By order dated May 9, 1996, the Bankruptcy Court  established
         July  9,  1996  as  the  deadline  for  other parties to executory
         contracts and unexpired leases which CBC  proposes  to  reject  to
         file proofs of claims arising from the rejection of such contracts
         or leases.

         E.   Assignment Of Executory Contracts  And  Unexpired  Leases  To
              Aquila

              On the Consummation Date, each of the executory contracts and
         unexpired leases that is being or previously has been assumed  and
         is  specifically  listed  on  the schedule of assumed and assigned
         executory contracts and unexpired  leases  which  is  attached  as
         Exhibit I hereto, shall be assigned to Aquila, pursuant to section
         365  of  the  Bankruptcy  Code.   The  Confirmation  Order   shall
         constitute  an  order  of  the  Bankruptcy  Court  approving  such
         assignments, pursuant to section 365 of the Bankruptcy Code.

         F.   Unidentified Executory Contracts and Unexpired Leases

              Any executory contract or unexpired lease of CBC which is not
         specifically  listed on either Exhibit G, H, or I, shall be deemed
         to be automatically rejected as of  the  Consummation  Date.   The
         Confirmation  Order  shall  constitute  an order of the Bankruptcy
         Court approving such rejection, pursuant to  section  365  of  the
         Bankruptcy Code.  No rejection shall affect the obligations of any
         party to CBC or Aquila under confidentiality covenants executed in
         favor of CBC, which covenants shall survive rejection.


                                     ARTICLE IX
                                CONDITIONS PRECEDENT 

         A.   Conditions To The Confirmation Date

              The following are conditions precedent to confirmation of the
         Plan that may be satisfied or waived in  accordance  with  Section
         IX.C of the Plan:

              1.   The  Bankruptcy  Court  shall have approved a disclosure
         statement  with  respect  to  the  Plan  in  form  and   substance
         reasonably acceptable to the Proponent.


                                       - 39 -<PAGE>




              2.   The  Confirmation  Order  shall be in form and substance
         reasonably acceptable to the Proponent.

         B.   Conditions To The Consummation Date

              The following are conditions precedent to the  occurrence  of
         the Consummation Date, each of which may be satisfied or waived in
         accordance with Section IX.C of the Plan:

              1.   The Confirmation Order shall have been  entered  by  the
         Court and shall not be stayed, suspended, or vacated.

              2.   The   Confirmation  Order  shall,  among  other  things,
         provide that:

                   a.   The  provisions  of  the  Confirmation  Order   are
         nonseverable and mutually dependent;

                   b.   The  Court  shall  approve  the  assumption  or the
         assumption and assignment, as the case may be,  of  all  executory
         contracts  and  unexpired leases proposed to be assumed or assumed
         and assigned by  CBC  on  the  terms  provided  in  the  Plan,  or
         substantially  similar  thereto,  and  all  executory contracts or
         unexpired leases assumed (or assumed and assigned) by  CBC  during
         the  Chapter  11  Case  or under the Plan and so designated by CBC
         shall  remain  in  full  force  and  effect  for  the  benefit  of
         Reorganized  CBC or Aquila, as assignee and transferee as the case
         may be, notwithstanding any provision in such  contract  or  lease
         (including  those  described in sections 365(b) (2) and (f) of the
         Bankruptcy Code) that prohibits such  assignment  or  transfer  or
         that enables or requires termination of such contract or lease;

                   c.   The transfers of property by CBC (a) to Reorganized
         CBC or Aquila (i) are or shall  be  legal,  valid,  and  effective
         transfers of property, (ii) vest or shall vest Reorganized CBC and
         Aquila with good title to such property  free  and  clear  of  all
         liens,  charges,  Claims,  encumbrances,  or  Interests, except as
         expressly provided in the Plan or Confirmation Order, (iii) do not
         and  shall not constitute avoidable transfers under the Bankruptcy
         Code or under applicable bankruptcy or nonbankruptcy law, and (iv)
         do  not  and  shall  not  subject Reorganized CBC or Aquila to any
         liability by reason of such transfer under the Bankruptcy Code  or
         under applicable nonbankruptcy law, including, without limitation,
         any laws affecting successor or transferee liability, and  (b)  to
         holders  of Claims and holders of Interests under the Plan are for
         good consideration and value and are in  the  ordinary  course  of
         CBC's business;

                   d.   Except as expressly provided in the Plan, CBC shall
         be discharged effective upon the Confirmation Date from any "debt"
         (as  that  term  is  defined  in section 101(12) of the Bankruptcy
         Code), and CBC's liability  in  respect  thereof  is  extinguished
         completely,  whether  reduced  to  judgment  or not, liquidated or
         unliquidated, contingent or noncontingent, asserted or unasserted,

                                       - 40 -<PAGE>




         fixed  or  unfixed,  matured or unmatured, disputed or undisputed,
         legal or equitable, or known or unknown, or that  arose  from  any
         agreement  of  CBC that has either been assumed or rejected in the
         Chapter 11 Case or pursuant to the  Plan,  or  obligation  of  CBC
         incurred  before the Confirmation Date, or from any conduct of CBC
         prior to the Confirmation Date, or that otherwise arose before the
         Confirmation Date, including, without limitation, all interest, if
         any, on any such debts, whether such interest  accrued  before  or
         after the Petition Date;

                   e.   Except  as  expressly  provided  in  the  Plan, all
         Interests shall be  terminated  effective  upon  the  Consummation
         Date;

                   f.   The  Plan  does  not provide for the liquidation of
         all  or  substantially  all  of  the  property  of  CBC  and   its
         confirmation  is  not  likely to be followed by the liquidation of
         Reorganized CBC or  Aquila  or  the  need  for  further  financial
         reorganization; and

                   g.   The Bankruptcy Court shall have determined that the
         New Common Stock and Rights (and the Units  shares,  Warrants  and
         Warrant  shares  issued  pursuant  thereto) to be issued under the
         Plan and distributed by  the  Disbursing  Agent  in  exchange  for
         Claims  against  or  Interests in CBC are exempt from registration
         under the Securities Act of 1933 pursuant to section 1145  of  the
         Bankruptcy  Code,  except  to  the extent that holders of any such
         securities are "underwriters," as that term is defined in  section
         1145 of the Bankruptcy Code.

                   h.   The Bankruptcy Court shall have determined that the
         Reorganization Value is not less than $9.50/share  of  New  Common
         Stock.

              3.   The  Bankruptcy  Court  shall  have  entered one or more
         orders (which may  be  the  Confirmation  Order)  authorizing  the
         assignment  of  all  assumed  leases  and  executory  contracts as
         designated by CBC to Aquila.

              4.   The Bankruptcy Court shall have estimated  all  Disputed
         Claims for purposes of establishing the Distribution Reserve.

              5.   No  request  for  revocation  of  the Confirmation Order
         under section 1144 of the Bankruptcy Code shall  have  been  made,
         or, if made, shall remain pending.

         C.   Waiver Of Conditions To The Confirmation Date Or Consummation
              Date

              The conditions set forth in Section IX.A and IX.B of the Plan
         may be waived by CBC, without notice or a hearing.  The failure to
         satisfy or  waive  any  condition  to  the  Confirmation  Date  or
         Consummation  Date  may  be  asserted  by  CBC  regardless  of the
         circumstances giving rise to the failure of such  condition to  be

                                       - 41 -<PAGE>




         satisfied  (including any action or inaction by CBC).  The failure
         of CBC to exercise any of the foregoing rights shall not be deemed
         a  waiver of any other rights, and each such right shall be deemed
         an ongoing right, which may be asserted at any time.


                                      ARTICLE X
                        PROCEDURES FOR RESOLVING AND TREATING
                    DISPUTED AND CONTINGENT CLAIMS AND INTERESTS 

         A.   No Distributions Pending Allowance

              Notwithstanding any other provision of the Plan, no  payments
         or  distributions shall be made with respect to all or any portion
         of a Disputed Claim or Disputed  Interest  unless  and  until  all
         objections  to  such Disputed Claim or Disputed Interest have been
         settled or withdrawn or  have  been  determined  by  Final  Order,
         provided, however, where an objection is made only to a portion of
         a Claim and no timely objection is made to  the  balance  of  such
         Claim,  such  undisputed  balance  shall  be treated as an Allowed
         Claim for purposes of distribution.

         B.   Distribution Reserve

              The Disbursing Agent shall withhold the Distribution  Reserve
         from the Cash and other property to be distributed under the Plan.
         As to any Disputed Claim or Disputed Interest, upon a request  for
         estimation  by CBC or Aquila, the Bankruptcy Court shall determine
         what amount is sufficient to include in the Distribution  Reserve.
         CBC  shall  request  estimation  for  every Disputed Claim that is
         unliquidated and the estimated amount of such Claims shall be used
         to compute the Distribution Reserve.  If CBC elects not to request
         such an estimation from the Bankruptcy Court  with  respect  to  a
         Disputed  Claim that is liquidated, the Distribution Reserve shall
         be computed based  upon  the  Face  Amount  of  such  Claim.   The
         Disbursing  Agent shall also place in the Distribution Reserve any
         dividends, payments, or other distributions made on account of, as
         well as any obligations arising from, the property withheld as the
         Distribution Reserve under this Section, to the extent  that  such
         property  continues  to be withheld as Distribution Reserve at the
         time such distributions are made or such obligations  arise.   For
         purposes  of  establishing  the Distribution Reserve disputed Cure
         amounts shall constitute Disputed Claims.

         C.   Distributions After Allowance

              Payments and distributions from the Distribution  Reserve  to
         each  holder  of  a  Disputed  Claim  or Disputed Interest, to the
         extent that all or part  of  such  Claim  or  Interest  ultimately
         becomes  an  Allowed  Claim  or  Allowed Interest shall be made in
         accordance with the provisions of the Plan governing the class  of
         Claims  or  Interests  to  which  the  respective  holder belongs.
         Promptly after  the  date  that  the  order  or  judgment  of  the
         Bankruptcy  Court  allowing  all or part of such Claim or Interest

                                       - 42 -<PAGE>




         becomes a Final Order, the Disbursing Agent  shall  distribute  to
         the  holder  of such Claim or Interest any Cash and other property
         in the Distribution Reserve that would have  been  distributed  on
         the  Consummation  Date  or  the Initial Distribution Date, as the
         case may be, had such Allowed Claim or Allowed Interest been  then
         allowed.   After  a  Final  Order has been entered, or other final
         resolution has been  reached,  with  respect  to  each  and  every
         Disputed  Claim  and  Disputed  Interest, (i) any Cash held in the
         Distribution Reserve shall become property of Aquila, and (ii) any
         New  Common  Stock shall be distributed Pro Rata to the holders of
         Allowed Class 6 Old Common Stock Interests.


                                     ARTICLE XI
                            MODIFICATIONS AND AMENDMENTS 

         A.   Modification Of The Plan

              CBC may alter, amend, or modify  the  Plan  or  any  Exhibits
         thereto  under  section 1127(a) of the Bankruptcy Code at any time
         prior to the Confirmation Date.  After the Confirmation  Date  and
         prior  to  substantial  consummation  of  the  Plan  as defined in
         section 1101(2) of the Bankruptcy Code, CBC or Aquila  may,  under
         section  1127(b)  of the Bankruptcy Code, institute proceedings in
         the Bankruptcy Court to remedy any defect or omission or reconcile
         any inconsistencies in the Plan, the disclosure statement approved
         with respect to the Plan, or  the  Confirmation  Order,  and  such
         matters  as may be necessary to carry out the purposes and effects
         of the Plan so long as such proceedings do  not  adversely  affect
         the  treatment  of holders of Claims or holders of Interests under
         the Plan; provided, however, that prior notice of such proceedings
         shall  be  served in accordance with the Bankruptcy Rules or order
         of the Bankruptcy Court.


                                     ARTICLE XII
                             RETENTION OF JURISDICTION 

              After the Confirmation Date and until the Chapter 11 Case  is
         closed:

              1.   The  Bankruptcy Court shall retain jurisdiction over the
         Chapter 11 Case for the following purposes:

                   a.   to hear and determine any and all pending or future
         proceedings  for  the estimation of or objections to the allowance
         of  Claims  or  Interests  relating  to  events  or   transactions
         occurring on or prior to the Consummation Date;

                   b.   to   consider   and   act  on  the  compromise  and
         settlement of any Claim against or Interest in CBC,  or  cause  of
         action  on  behalf  of  CBC's Estate provided, however, that there
         shall be no requirement that CBC seek Bankruptcy Court approval of
         any such compromise and settlement;

                                       - 43 -<PAGE>




                   c.   to   hear  and  determine  all  pending  or  future
         controversies, suits, and disputes that may arise under the  Plan,
         and controversies arising in connection with the interpretation of
         the Plan, including any and all schedules, documents, and exhibits
         hereto,  or  any documents intended to implement the provisions of
         the Plan;

                   d.   to hear and determine any and all applications  for
         the allowance of compensation and reimbursement of expenses;

                   e.   to   hear   and   determine  any  and  all  pending
         applications for rejection or assumption  of  executory  contracts
         and  unexpired  leases  to which CBC is a party or with respect to
         which CBC may be liable, and to hear and determine, if  necessary,
         or  to estimate or liquidate, any and all Claims arising therefrom
         or  from  assumption  or  rejection  of  executory  contracts   or
         unexpired leases pursuant to the Plan or otherwise;

                   f.   to consider any modifications of the Plan;

                   g.   to  correct  any  defect,  cure  any  omission,  or
         reconcile any inconsistency in the  Plan,  including  any  Exhibit
         thereto,  or  in  any order of the Bankruptcy Court, including the
         Confirmation Order, as may be necessary, to carry out the purposes
         and intent of the Plan and to implement and effectuate the Plan;

                   h.   to  determine such other matters as may be provided
         for in the Confirmation Order or other orders  of  the  Bankruptcy
         Court  as may be authorized under the provisions of the Bankruptcy
         Code or any other applicable law;

                   i.   to enforce all orders, judgments, injunctions,  and
         rulings entered in connection with CBC's Chapter 11 Case;

                   j.   to  issue  such  orders  as  may  be  necessary  or
         appropriate  in   aid   of   confirmation,   and   to   facilitate
         consummation, of the Plan; and

                   k.   to enter an order closing the Chapter 11 Case.

              2.   The Bankruptcy Court shall retain and have original, but
         not exclusive, jurisdiction over the Chapter 11 Case to  hear  and
         determine  any  and  all  applications, adversary proceedings, and
         contested and litigated matters pending on the  Confirmation  Date
         or  thereafter  instituted  by  or on behalf of Aquila, including,
         without limitation, all  proceedings  for  the  estimation  of  or
         objection   to   Claims,  any  disputes  between  Aquila  and  the
         Retroviral  Business  Buyer  or  the   Enterics   Business   Buyer
         concerning  the  sale  of the Retroviral Business and the Enterics
         Business,  respectively,  except  as  otherwise  provided  in  the
         Retroviral  Business  Purchase  Agreement  with  respect  to Post-
         Consummation Date  matters,  any  and  all  applications  for  the
         allowance  of  compensation and reimbursement of expenses, and any
         claims by or on behalf of Aquila arising under the Bankruptcy Code

                                       - 44 -<PAGE>




         to avoid any preferences, fraudulent transfers, or other avoidable
         transfers.


                                     ARTICLE XII
                                    SETTLEMENTS 

              Pursuant to section 1123(b)(3) of  the  Bankruptcy  Code  and
         Bankruptcy  Rule  9019(a),  CBC shall effectuate the compromise(s)
         and settlement(s) described below.

         A.   Securities Class Action Settlement

              1.   Background 

              In  the  Securities  Class  Action,  the   Securities   Class
         Plaintiffs  have  asserted  claims  against  CBC,  certain  of the
         Securities Class Settling Officers and Directors, and  Deloitte  &
         Touche.  Claims against CBC were stayed and have been incorporated
         in the Securities Class Proof of Claim.  Claims against Deloitte &
         Touche  were  dismissed  without  prejudice.  The Securities Class
         Plaintiffs alleged that  CBC  violated  Rule  10(b)-5,  under  the
         Securities Exchange Act of 1934, by disseminating materially false
         and misleading information to the public.   The  Securities  Class
         Plaintiffs allege that, as a result, they purchased CBC's stock at
         artificially inflated prices between February 28, 1992 through May
         9, 1994.

              2.   Settlement 

              Pursuant  to  the Securities Class Settlement Agreements, the
         Securities Class Plaintiffs  have  agreed  to  settle  all  claims
         against  CBC  and  the  Securities  Class  Settling  Officers  and
         Directors.  Pleadings have  been  filed  with  the  United  States
         District  Court  for the District of Massachusetts for the purpose
         of  approving  the  settlement.   The  District  Court:   (i)  has
         withdrawn the reference with respect to the Securities Class Proof
         of Claim; (ii) has certified the Securities Settlement  Class  for
         purposes  of settling both the Securities Class Claims against CBC
         and the claims against the Securities Class Settling Officers  and
         Directors;   (iii)  approved  and/or  authorized  counsel  to  the
         Securities Class Plaintiffs to file the Securities Class Proof  of
         Claim  and  to  vote  such  Claim in the Chapter 11 Case; and (iv)
         approved the terms of the Securities Class  Settlement  Agreements
         as being fair and reasonable from the standpoint of the Securities
         Class Plaintiffs.  A hearing on final approval of  the  Securities
         Class  Settlement  Agreements  was held on April 4, 1996.  Without
         objection, the District Court entered a Final Order  and  Judgment
         approving the Securities Class Settlement Agreements.

              3.   Terms of Settlement 

              Under  the Securities Class Settlement Agreements the holders
         of the Securities Class Claims will be entitled to  receive  their

                                       - 45 -<PAGE>




         Pro  Rata  share of:  (i) 1,250,000 shares of New Common Stock and
         1,250,000  Rights  to  be  distributed  to  them  on  the  Initial
         Distribution Date; and (ii) 90% of any recoveries from prosecution
         of claims (whether held by  the  Securities  Class  Plaintiffs  or
         CBC), if any, against CBC's former accountants, Deloitte & Touche.
         CBC also shall permit the Securities Class Plaintiffs to prosecute
         CBC's  claims  against  CBC's  former  accountants,  at  their own
         expense.  CBC shall be entitled to receive 10% of  any  recoveries
         from  prosecution  of  such claims.  All distributions, whether to
         holders of Securities Class Claims or to CBC, shall be net of  any
         fees  and  expenses  of  legal  counsel  to  the  Securities Class
         Plaintiffs which are approved by the District Court.

              Under the Securities Class Settlement Agreements  members  of
         the  Securities  Settlement Class will also be entitled to receive
         their Pro Rata share of $1,050,000 in insurance  proceeds  payable
         under a National Union insurance policy (reduced from the original
         face amount of $3,000,000) insuring the Securities Class  Settling
         Officers  and  Directors  against  amounts  paid  in settlement of
         claims against them, net of fees and expenses of legal counsel  to
         the Securities Class Plaintiffs which are approved by the District
         Court.

              The Securities Class Settlement Agreements also  provide  for
         reimbursement  of up to $100,000 of legal fees and expenses of the
         Securities Class Settling Officers and Directors payable under the
         same National Union insurance policy.

              The  Securities  Class  Action  Settlement Agreements include
         provisions retroactively amending  the  National  Union  insurance
         policy  as  of the date of policy inception to reduce the limit of
         liability amount from  $3,000,000  to  $1,150,000,  with  National
         Union  relinquishing  any and all rights to CBC's 10% share of any
         recoveries  from  Deloitte  &  Touche.   This  amended  limit   of
         liability  will  be  exhausted  by  National  Union's  payment  of
         $1,050,000  to  the  Securities  Settlement  Class   and   further
         reimbursement of up to $100,000 for legal fees and expenses of the
         Securities Class Settling Officers and Directors, and  no  further
         insurance recoveries from National Union will be possible.

              CBC  is  requesting  that the Bankruptcy Court determine that
         the Securities Class Settlement Agreements are fair and reasonable
         from  the  standpoint  of CBC and the Estate, which the Bankruptcy
         Court will determine at the  Confirmation  Hearing.   Accordingly,
         the   Securities   Class  Settlement  Agreements  are  subject  to
         confirmation of the Plan.

                                    ARTICLE XIII
                              MISCELLANEOUS PROVISIONS 

         A.   Setoffs

              Aquila may, but shall not be required to, set off against any
         Claim, and the payments or other distributions to be made pursuant

                                       - 46 -<PAGE>




         to the Plan in  respect  of  such  Claim,  claims  of  any  nature
         whatsoever that CBC may have against the holder of such Claim; but
         neither the failure to do  so  nor  the  allowance  of  any  Claim
         hereunder  shall constitute a waiver or release by CBC of any such
         claim that CBC may have against such holder.

         B.   Withholding And Reporting Requirements

              In connection with the Plan and  all  instruments  issued  in
         connection  therewith  and  distributions  thereon,  Aquila  shall
         comply with all withholding and reporting requirements imposed  by
         any  federal,  state,  local, or foreign taxing authority, and all
         distributions hereunder shall be subject to any  such  withholding
         and reporting requirements.

         C.   Discharge Of CBC And Aquila

              All  property distributed under the Plan shall be in exchange
         for, and in  complete  satisfaction,  settlement,  discharge,  and
         release  of,  all  Claims  of  any  nature whatsoever against CBC,
         Reorganized  CBC,  and  Aquila  and/or  any  of  their  assets  or
         properties,  and,  except  as  otherwise provided herein or in the
         Confirmation  Order,  and  upon  the   Confirmation   Date,   CBC,
         Reorganized  CBC,  and  Aquila  shall  be  deemed  discharged  and
         released under section 1141(d)(i)(A) of the Bankruptcy  Code  from
         any  and  all  debts.   The Confirmation Order shall be a judicial
         determination of discharge of all liabilities of CBC,  Reorganized
         CBC,  and  Aquila,  subject  to the occurrence of the Consummation
         Date.

         D.   Intentionally Omitted 

         E.   Committees

              The Equity  Committee  and  the  Creditors'  Committee  shall
         terminate on the Consummation Date.

         F.   Binding Effect

              The  Plan  shall  be binding upon and inure to the benefit of
         CBC, Aquila, Reorganized CBC, the holders of Claims,  the  holders
         of Interests, and their respective successors and assigns.

         G.   Revocation, Withdrawal Or Nonconsummation

              1.   Right To Revoke Or Withdraw

              The  Proponent  reserves  the right to revoke or withdraw the
         Plan at any time prior to the Confirmation Date.

              2.   Effect Of Withdrawal, Revocation, Or Nonconsummation

              If the Proponent revokes or withdraws the Plan prior  to  the
         Confirmation Date, or if the Confirmation Date or the Consummation

                                       - 47 -<PAGE>




         Date does not occur, then the Plan, any settlement  or  compromise
         effected  in  the  Plan  (including  the  fixing or limiting to an
         amount certain any  Claim  or  Class  of  Claims),  assumption  or
         rejection  of  executory contracts or leases affected by the Plan,
         and any document or agreement executed pursuant to the Plan, shall
         be deemed null and void.  In such event, nothing contained herein,
         and no acts taken in preparation for  consummation  of  the  Plan,
         shall be deemed to constitute a waiver or release of any Claims by
         or against CBC or any other Person, to prejudice in any manner the
         rights  of  CBC or any Person in any further proceedings involving
         CBC, or to constitute an admission of any sort by CBC or any other
         Person.

         H.   Post-Confirmation  Reservation  Of  Shares  For Issuance Upon
              Exercise Of Rights And Warrants

              Aquila shall at all times keep reserved,  out  of  authorized
         and  unissued  New  Common Stock, a number of shares of New Common
         Stock sufficient to provide for (i) exercise of  the  subscription
         rights  under  the  Units,  and  (ii) the exercise of the right to
         purchase New Common Stock upon exercise of the Warrants.

         I.   Other Post-Consummation Reserves Of New Common Stock

              Aquila shall establish a New Management and  Employee  Common
         Stock  Reserve consisting of 2,400,000 shares of New Common Stock.
         The New Common Stock reserved in the New Management  and  Employee
         Common  Stock  Reserve  shall  be  used to grant incentive equity,
         whether  through  stock  options  or  stock  purchase  plans,   or
         otherwise, to directors, management, employees, and consultants of
         Aquila, pursuant to Aquila's (i)  Employee  Stock  Purchase  Plan,
         (ii)  Stock Award and Option Plan, and (iii) Directors Stock Award
         and Option Plan, as each such plan  is  summarized  on  Exhibit  J
         hereto.   This  shall  include,  without  limitation,  the  Senior
         Executives Stock Options.  Confirmation of the Plan will be deemed
         to  constitute  approval  of these plans for purposes of Rule 16b-
         3(b) of the Securities Exchange Act of 1934 and section 422 of the
         Internal Revenue Code. 

         J.   Notices

              Any  notice required or permitted to be provided to CBC under
         the Plan shall be in writing and served  by  (a)  certified  mail,
         return  receipt  requested,  (b)  hand  delivery, or (c) overnight
         delivery service, to be addressed as follows:

                   Cambridge Biotech Corporation
                   Biotechnology Research Park
                   365 Plantation Street
                   Worcester, MA  01605-2376
                   Attn: President

                   with a copy to:


                                       - 48 -<PAGE>




                   Brown, Rudnick, Freed & Gesmer, P.C.
                   One Financial Center
                   Boston, MA  02111
                   Attn: Joseph F. Ryan, Esquire
                         Jeffrey L. Jonas, Esquire

         K.   Indemnification Obligations

              Except as otherwise provided  in  the  Plan,  the  Securities
         Class  Settlement  Agreements, or any ancillary documents executed
         in connection therewith, Aquila will assume any obligations of CBC
         to  indemnify  Frederick V. Casselman and any of CBC's officers or
         directors employed as of the Petition Date, or subsequent thereto,
         pursuant  to  the  CBC  Certificate Of Incorporation, by-laws, and
         policy of providing employee indemnification, and applicable state
         law  or  specific  agreements in respect of claims, based upon any
         act or omission related to their service with, for, or  on  behalf
         of  CBC,  irrespective  of  whether  indemnification  is  owed  in
         connection with an occurrence before or after the  Petition  Date;
         provided,  however,  any  obligation to indemnify such indemnitees
         for matters arising prior to the Petition Date shall survive  only
         to  the  extent a timely proof of claim therefor was duly filed by
         the affected indemnitee.

         L.   Prepayment

              Unless the Plan or the Confirmation Order otherwise provides,
         Aquila shall have the right to prepay, without penalty, all or any
         portion of an Allowed Claim at any time; provided,  however,  that
         any  such  prepayment  shall  not  be  violative  of, or otherwise
         prejudice, the relative priorities and parities among the  Classes
         of Claims.

         M.   Term Of Injunctions Or Stays

              Unless  otherwise  provided  in  the Plan or the Confirmation
         Order, all injunctions or stays provided for  in  the  Chapter  11
         Case under section 105 or 362 of the Bankruptcy Code or otherwise,
         and extant on the Confirmation Date, shall remain  in  full  force
         and effect until the Consummation Date.

         N.   Governing Law

              Unless  a rule of law or procedure is supplied by federal law
         (including the Bankruptcy Code and Bankruptcy Rules), the laws  of
         Commonwealth  of  Massachusetts  shall govern the construction and
         implementation of the Plan  and  any  agreements,  documents,  and
         instruments  executed  in  connection  with the Plan.  The laws of
         State of Delaware shall govern corporate governance matters.






                                       - 49 -<PAGE>




         Dated: As of May 20, 1996          CAMBRIDGE BIOTECH CORPORATION
                Worcester, Massachusetts

                                            By: /s/ Alison Taunton-Rigby       
                                              Name:  Alison Taunton-Rigby,
                                                      Ph.D.
                                               Title: President and Chief
                                                      Executive Officer

         Joseph F. Ryan
         James E. McGuire
         Jeffrey L. Jonas
         Anthony L. Gray
         BROWN, RUDNICK, FREED & GESMER, P.C.
         Attorneys for Cambridge Biotech Corporation
         One Financial Center
         Boston, MA  02111
         617-856-8200





































                                       - 50 -





                                     EXHIBIT A

                 RESTATED CERTIFICATE OF INCORPORATION, AS AMENDED

                                        OF

                           CAMBRIDGE BIOTECH CORPORATION


             FIRST.    The name of the corporation is Cambridge Biotech
        Corporation. 

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

             THIRD.    The nature of the business or purpose to be
        conducted or promoted is:

                  To engage in any lawful act or activity for which
             corporations may be organized under the General Corporation
             Law of Delaware.

             FOURTH.

             A.   Number of Shares.

                  The total number of shares of capital stock which the
        corporation shall have the authority to issue is forty-five
        million (45,000,000) shares, of which forty million (40,000,000)
        shares shall be common stock, par value $.01 per share, and five
        million (5,000,000) shares shall be preferred or special stock,
        par value $.01 per share.

                  The number of authorized shares of preferred or special
        stock may be increased or decreased (but not below the number of
        shares outstanding) by the affirmative vote of the holders of a
        majority of the common stock, without a vote of the holders of the
        preferred or special stock, or of any class or series thereof,
        unless a vote of any such holders is required pursuant to the
        certificate or certificates establishing the class or series of
        preferred or special stock.

             B.   General.

                  No holder of any stock of the corporation shall be
        entitled as such, as a matter of right, to subscribe for or
        purchase any part of any new or additional issue of stock of any
        class whatsoever of the corporation, or of securities convertible
        into stock of any class whatsoever, whether now or hereafter
        authorized, or whether issued for cash or other consideration or
        by way of dividend.<PAGE>




                  The designations, powers, preferences and rights of, and
        the qualifications, limitations and restrictions upon, each class
        or series of stock shall be as set forth below in Paragraphs C and
        D of this Article FIFTH.

             C.   Preferred or Special Stock.

                  Subject to any limitations prescribed by law, the board
        of directors of the corporation is expressly authorized to provide
        for the issuance of the shares of preferred or special stock in
        one or more classes or one or more series within any class, and by
        filing a certificate pursuant to applicable law of the State of
        Delaware, to establish or change from time to time the number of
        shares to be included in each such class or series, and to fix the
        designation, powers, preferences and rights of the shares of each
        such class or series and any qualifications, limitations and
        restrictions thereof.  Any action by the board of directors under
        this Paragraph C shall require the affirmative vote of a majority
        of the directors then in office.  The authority of the board of
        directors with respect to each class or series of preferred or
        special stock shall include, but not be limited to, the right to
        determine or fix one or more of the following:

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

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

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

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

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

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




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

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

                  (i)  Whether the shares of such class or series which
        are redeemed or converted shall have the status of authorized but
        unissued shares of preferred or special stock and whether such
        shares may be reissued as shares of the same or any other class or
        series of stock; and

                  (j)  Such other powers, preferences, rights,
        qualifications, limitations and restrictions thereof as the board
        of directors of the company may deem advisable.

             All stock issued pursuant to this Paragraph C shall be
        hereinafter referred to as "preferred stock."

             D.   Common Stock.

                  Subject to all of the rights of the preferred stock, and
        except as provided by law or in this Article FIFTH (or in any
        certificate of designations of any class or series of preferred
        stock) or by the board of directors pursuant to this Article
        FIFTH:

                  (a)  the holders of the common stock shall have the
        exclusive right to vote for the election of directors and on all
        other matters requiring shareholder action, each share being
        entitled to one vote;

                  (b)  dividends may be declared and paid or set apart for
        payment upon the common stock out of any assets or funds of the
        corporation legally available for the payment of dividends, but
        only when and as declared by the board of directors or any
        committee thereof authorized by the board of directors to declare
        dividends; and

                  (c)  upon the voluntary or involuntary liquidation,
        dissolution or winding up of the corporation, the net assets of
        the corporation shall be distributed pro rata to the holders of
        the common stock in accordance with their respective rights and
        interests.<PAGE>




             FIFTH.    In furtherance and not in limitation of the powers
        conferred by the State of Delaware:

                  A.   The board of directors shall have the power to
        adopt, alter, amend and repeal the by-laws of the corporation.
        Any by-laws of the corporation adopted by the directors under the
        powers conferred hereby may be altered, amended or repealed by the
        directors or by the shareholders.  Notwithstanding the foregoing
        or any other provisions of this certificate of incorporation or
        the by-laws of the corporation to the contrary, any such action by
        the board of directors to adopt, alter, amend or repeal the by-
        laws of the corporation shall require the affirmative vote of a
        majority of the directors then in office at a duly constituted
        meeting of the board of directors. Notwithstanding the foregoing
        or any other provisions of this certificate of incorporation or
        the by-laws of the corporation to the contrary, any action by the
        shareholders to adopt, alter, amend or repeal the by-laws of the
        corporation shall require the affirmative vote of the holders of
        at least eighty percent of the then outstanding shares of stock
        entitled to vote thereon, voting together as a single class, at a
        duly constituted meeting of shareholders called expressly for such
        purpose.

                  B.   Elections of directors need not be by written
        ballot unless the by-laws of the corporation shall so provide.

                  C.   The books of the corporation may be kept at such
        place within or without the State of Delaware as the by-laws of
        the corporation may provide or as may be designated from time to
        time by the board of directors of the corporation.

                  D.   A director of the corporation shall not be
        personally liable to the corporation or its stockholders for
        monetary damages for breach of fiduciary duty as a director,
        except for liability (i) for any breach of the director's duty of
        loyalty to the corporation or its stockholders, (ii) for acts or
        omissions not in good faith or which involve intentional
        misconduct or a knowing violation of law, (iii) under Section 174
        of the Delaware General Corporation Law, or (iv) for any
        transaction from which the director derived an improper personal
        benefit.  If the Delaware General Corporation law is amended after
        approval by the stockholders of this Paragraph D to authorize
        corporate action further eliminating or limiting the personal
        liability of directors, then the liability of a director of the
        corporation shall be eliminated or limited to the fullest extent
        permitted by the Delaware General Corporation Law, as so amended.
        Any repeal or modification of this Paragraph D by the stockholders
        of the corporation shall not adversely affect any right or
        protection of a director of the corporation existing at the time
        of such repeal or modification.<PAGE>




                  E.   Except as otherwise fixed pursuant to the
        provisions of Article FIFTH hereof relating to the rights of the
        holders of any class or series of preferred stock to elect
        directors, the number of directors of the corporation shall be
        fixed from time to time by or in the manner provided in the
        corporation's by-laws.  The directors, other than those who may be
        elected by the holders of any class or series of preferred stock,
        shall be classified, with respect to the term for which they
        severally hold office into three classes, as nearly equal in
        number as possible, as shall be provided in the manner specified
        in the by-laws.

                  At the annual shareholders, meeting in 1989, one class
        of such directors shall be elected for a one-year term, one class
        for a two-year term and one class for a three-year term, with the
        members of each class to hold office until their respective
        successors are elected and qualified.  Commencing with the annual
        shareholders' meeting in 1990 and at each succeeding annual
        meeting of the shareholders of the corporation, the successors to
        the class of directors whose term expires at that meeting shall be
        elected to hold office for a term expiring at the annual meeting
        of shareholders held in the third year following the year of their
        election and until their respective successors are elected and
        qualified.  If the number of directors is changed, any increase or
        decrease in the number of directors shall be apportioned by the
        board of directors among the classes so as to maintain the number
        of directors comprising each class as nearly equal as possible,
        provided that no decrease in the number of directors shall affect
        the term of any director then in office.

                  F.   Subject to the rights of any class or series of
        preferred stock to elect or remove directors, any director
        (including persons elected by directors to fill vacancies in the
        board of directors) may be removed from office only with cause and
        by the affirmative vote of (i) the holders of at least eighty
        percent of the then outstanding shares of stock entitled to vote
        generally in the election of directors, voting together as a
        single class, at a duly constituted meeting of shareholders called
        expressly for such purpose, or (ii) at least two-thirds of the
        directors then in office.  A director may not be removed from
        office without cause.  At least 30 days prior to any such meeting
        of shareholders, written notice shall be sent to the director
        whose removal will be considered at the meeting.

                  G.   Except as otherwise fixed pursuant to the
        provisions of Article FIFTH hereof relating to the rights of the
        holders of any class or series of preferred stock to elect
        directors, any vacancy occurring in the board of directors,
        including any newly created directorships resulting from an
        increase in the number of directors or any vacancy resulting from
        death, resignation, disqualification, removal or other cause,
        shall be filled solely by the affirmative vote of a majority of
        the remaining directors then in office, even though less than a
        quorum of the board of directors.  Any director appointed in<PAGE>




        accordance with the preceding sentence shall hold office for the
        remainder of the full term of the class of directors in which the
        new directorship was created or the vacancy occurred and until
        such director's successor shall have been elected and qualified.

             SIXTH.    Any action required by law to be taken at any
        annual or special meeting of stockholders of the corporation, or
        any action which may be taken at any annual or special meeting of
        such stockholders, shall be taken only at such a meeting.

                  Except as otherwise required by law and subject to the
        rights of the holders of any class or series of preferred stock,
        special meetings of the shareholders of the corporation may be
        called only by (i) the board of directors pursuant to a resolution
        approved by the affirmative vote of a majority of the directors
        then in office, (ii) the Chairman of the board, if one is elected,
        or (iii) the President.  Only those matters set forth in the
        notice of the special meeting may be considered or acted upon at
        such special meeting, unless otherwise provided by law. Advance
        notice of any matters which shareholders intend to propose for
        action at an annual meeting shall be given in the manner provided
        in the by-laws of the corporation.

             SEVENTH.  Whenever a compromise or arrangement is proposed
        between this corporation and its creditors or any class of them
        and/or between this corporation and its stockholders or any class
        of them, any court of equitable jurisdiction within the State of
        Delaware may, on the application in a summary way of this
        corporation or of any creditor or stockholder thereof or on the
        application of any receiver or receivers appointed for this
        corporation under Section 291 of Title 8 of the Delaware Code or
        on the application of trustees in dissolution or of any receiver
        or receivers appointed for this corporation under Section 279 of
        Title 8 of the Delaware Code order a meeting of the creditors or
        class of creditors, and/or of the stockholders or class of
        stockholders of this corporation, as the case may be, to be
        summoned in such manner as the said court directs.  If a majority
        in number representing three-fourths in value of the creditors or
        class of creditors, and/or of the stockholders or class of
        stockholders of this corporation, as the case may be, agree to any
        compromise or arrangement and to any reorganization of this
        corporation as a consequence of such compromise or arrangement,
        the said compromise or arrangement and the said reorganization
        shall, if sanctioned by the court to which the said application
        has been made, be binding on all the creditors or class of
        creditors, and/or on all the stockholders or class of
        stockholders, of this corporation, as the case may be, and also on
        this corporation.

             EIGHTH.   The corporation reserves the right to repeal, alter
        or amend this certificate of incorporation in the manner now or
        hereafter prescribed by statute and this certificate of
        incorporation, and all rights conferred upon shareholders herein
        are granted subject to this reservation.  No repeal, alteration or<PAGE>




        amendment of this certificate of incorporation shall be made
        unless the same is first approved by the board of directors of the
        corporation pursuant to a resolution adopted by the affirmative
        vote of a majority of the directors then in office, and thereafter
        approved by the shareholders.  For the purposes of the foregoing
        sentence, and notwithstanding any other provisions of this
        certificate of incorporation or the by-laws of the corporation
        (and notwithstanding the fact that a lesser percentage may be
        specified by law, this certificate of incorporation or the by-laws
        of the corporation), the affirmative vote of the holders of at
        least two-thirds, or eighty percent in the case of Sections A, B
        and F of Article SIXTH, of the then outstanding shares of stock
        entitled to vote thereon (or such greater proportion as may be
        required by law) voting together as a single class, at a duly
        constituted meeting of shareholders called expressly for such
        purpose, shall be required to repeal, alter or amend any provision
        of, or adopt any provision inconsistent with, this Article NINTH,
        Sections B, C and D of Article FIFTH, Article SIXTH, or Article
        SEVENTH.




                                    EXHIBIT B-1

                           CERTIFICATE OF INCORPORATION
                                        OF
                          AQUILA BIOPHARMACEUTICALS, INC.

                     [As Proposed to Be Amended and Restated]

             FIRST.  The name of the corporation is Aquila
        Biopharmaceuticals, Inc.

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

             THIRD.  The nature of the business or purpose to be conducted
        or promoted is:  to engage in any lawful act or activity for which
        corporations may be organized under the General Corporation Law of
        Delaware.

             FOURTH.  The name and address of the incorporator is:
        Jane V. Hawkes of 311 Main Street, Worcester, Massachusetts.

             FIFTH.  

             A.   Number of Shares.

             The total number of shares of capital stock which the
        corporation shall have the authority to issue is thirty-one
        million five hundred thousand (31,500,000) shares, of which thirty
        million (30,000,000) shares shall be common stock, par value $.01
        per share, and one million five hundred thousand (1,500,000)
        shares shall be preferred or special stock, par value $.01 per
        share.

             The number of authorized shares of preferred or special stock
        may be increased or decreased (but not below the number of shares
        outstanding) by the affirmative vote of the holders of a majority
        of the common stock, without a vote of the holders of the
        preferred or special stock, or of any class or series thereof,
        unless a vote of any such holders is required pursuant to the
        certificate or certificates establishing the class or series of
        preferred or special stock.

             B.   General.

             No holder of any stock of the corporation shall be entitled
        as such, as a matter of right, to subscribe for or purchase any
        part of any new or additional issue of stock of any class
        whatsoever of the corporation, or of securities convertible into
        stock of any class whatsoever, whether now or hereafter
        authorized, or whether issued for cash or other consideration or
        by way of dividend.<PAGE>




             The designations, powers, preferences and rights of, and the
        qualifications, limitations and restrictions upon, each class or
        series of stock shall be as set forth below in Paragraphs C or D
        of this Article FIFTH; provided, that in no event shall the
        corporation have authority to issue any class or series of stock
        which does not have the right to vote generally in the election of
        directors, notwithstanding anything in Paragraphs C or D of
        Article FIFTH to the contrary.

             C.   Preferred or Special Stock.

             Subject to any limitations prescribed by law, the board of
        directors of the corporation is expressly authorized to provide
        for the issuance of the shares of preferred or special stock in
        one or more classes or one or more series within any class, and by
        filing a certificate pursuant to applicable law of the State of
        Delaware, to establish or change from time to time the number of
        shares to be included in each such class or series, and to fix the
        designation, powers, preferences and rights of the shares of each
        such class or series and any qualifications, limitations and
        restrictions thereof.  Any action by the board of directors under
        this Paragraph C shall require the affirmative vote of a majority
        of the directors then in office.  The authority of the board of
        directors with respect to each such class or series of preferred
        or special stock shall include, but not be limited to, the right
        to determine or fix one or more of the following:

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

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

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

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

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

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

                                       - 2 -<PAGE>




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

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

             (i)  Whether the shares of such class or series which are
        redeemed or converted shall have the status of authorized but
        unissued shares of preferred or special stock and whether such
        shares may be reissued as shares of the same or any other class or
        series of stock; and

             (j)  Such other powers, preferences, rights, qualifications,
        limitations and restrictions thereof as the board of directors of
        the corporation may deem advisable.

             All stock issued pursuant to this Paragraph C shall be
        hereinafter referred to as "preferred stock".

             D.   Common Stock

             Subject to all of the rights of the preferred stock, and
        except as provided by law or in this Article FIFTH (or in any
        certificate of designations of any class or series of preferred
        stock) or by the board of directors pursuant to this Article
        FIFTH:

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

             (b)  dividends may be declared and paid or set apart for
        payment upon the common stock out of any assets or funds of the
        corporation legally available for the payment of dividends, but
        only when and as declared by the board of directors or any
        committee thereof authorized by the board of directors to declare
        dividends; and 

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

             SIXTH.  In furtherance and not in limitation of the powers
        conferred by the State of Delaware:


                                       - 3 -<PAGE>




             A.   The board of directors shall have the power to adopt,
        alter, amend and repeal the by-laws of the corporation.  Any by-
        laws of the corporation adopted by the directors under the powers
        conferred hereby may be altered, amended or repealed by the
        directors or by the shareholders.  Notwithstanding the foregoing
        or any other provisions of this certificate of incorporation or
        the by-laws of the corporation to the contrary, any such action by
        the board of directors to adopt, alter, amend or repeal the by-
        laws of the corporation shall require the affirmative vote of a
        majority of the directors then in office at a duly constituted
        meeting of the board of directors.  Notwithstanding the foregoing
        or any other provisions of this certificate of incorporation or
        the by-laws of the corporation to the contrary, any action by the
        shareholders to adopt, alter, amend or repeal the by-laws of the
        corporation shall require the affirmative vote of the holders of
        at least sixty-six and two-thirds percent (66 2/3%) of the then
        outstanding shares of stock entitled to vote thereon, voting
        together as a single class, at a duly constituted meeting of the
        stockholders called expressly for such purpose.

             B.   Elections of directors need not be by written ballot
        unless the by-laws of the corporation shall so provide.

             C.   The books of the corporation may be kept at such place
        within or without the State of Delaware as the by-laws of the
        corporation may provide or as may be designated from time to time
        by the board of directors of the corporation.

             D.   A director of the corporation shall be relieved of any
        personal liability to the corporation or its stockholders for
        monetary damages for breach of his or her fiduciary duty as a
        director of the corporation to the extent provided either (i) in
        the order of the United States Bankruptcy Court for the District
        of Massachusetts confirming the Reorganization Plan of Cambridge
        Biotech Corporation (Case No. 94-43054-JFQ), but in any event to
        no greater extent than is permitted by Section 102(b)(7) or any
        successor or similar provision of the Delaware General Corporation
        Law, or (ii) by the Delaware General Corporation Law, as now or
        hereafter in effect and interpreted by the courts of the State of
        Delaware, in the absence of any specific provision in a
        corporation's certificate of incorporation.

             E.   Except as otherwise fixed pursuant to the provisions of
        Article FIFTH hereof relating to the rights of the holders of a
        class or series of preferred stock to elect directors, the number
        of directors of the corporation shall be fixed from time to time
        by or in the manner provided in the corporation's by-laws.  The
        directors, other than those who may be elected by the holders of
        any class or series of preferred stock, shall be classified with
        respect to the term for which they severally hold office into
        three classes, as nearly equal in number as possible, as shall be
        provided in the manner specified in the by-laws.



                                       - 4 -<PAGE>




             The corporation shall call a special meeting of stockholders
        for a date approximately one hundred twenty days after the
        Consummation Date under the Reorganization Plan of Cambridge
        Biotech Corporation confirmed by the United States Bankruptcy
        Court for the District of Massachusetts (Case No. 94-43054-JFQ).
        At that meeting, the term of office of the class of directors
        designated as the Class I directors shall expire and new Class I
        directors shall be elected for a term to expire at the annual
        stockholders meeting in 1999.  At the annual stockholders meeting
        in 1997, the term of office of the class of directors designated
        as the Class II directors shall expire and new Class II directors
        shall be elected for a term expiring in 2000, and at the annual
        shareholders meeting in 1998, the term of office of the class of
        directors designated as the Class III directors shall expire and
        new Class III directors shall be elected for a term expiring in
        2001.  At each succeeding annual meeting of stockholders of the
        corporation, the successors to the class of directors whose terms
        expire at that meeting shall be elected to hold office for a term
        expiring at the annual meeting of shareholders held in the third
        year following the year of their election and until their
        respective successors are elected and qualified.  If the number of
        directors is changed, any increase or decrease in the number of
        directors shall be apportioned by the board of directors so that
        each class is as nearly equal as possible, provided that no
        decrease in the number of directors shall affect the term of any
        director then in office.  

             F.   Subject to the rights of any class or series of
        preferred stock to elect or remove directors, any director
        (including persons elected by directors to fill vacancies on the
        board of directors) may be removed from office, with or without
        cause, by the affirmative vote of (i) the holders of at least
        sixty-six and two-thirds percent (66 2/3%) of the then outstanding
        shares of stock entitled to vote generally in the election of
        directors, voting together as a single class, at a duly
        constituted meeting of stockholders called expressly for such
        purpose, or (ii) at least two-thirds of the directors then in
        office.  At least thirty (30) days prior to any such meeting of
        shareholders, written notice shall be sent to the director whose
        removal will be considered at the meeting.

             G.   Except as otherwise fixed pursuant to the provisions of
        Article FIFTH hereof relating to the rights of the holders of any
        class or series of preferred stock to elect directors, any vacancy
        occurring in the board of directors, including any newly created
        directorships resulting from an increase in the number of
        directors or any vacancy resulting from death, resignation,
        disqualification, removal or other cause, shall be filled solely
        by the affirmative vote of a majority of the remaining directors
        then in office, even though less than a quorum of the board of
        directors.  Any director appointed in accordance with the
        preceding sentence shall hold office for the remainder of the full
        term of the class of directors in which the new directorship was


                                       - 5 -<PAGE>




        created or the vacancy occurred and until such director's
        successor shall have been elected and qualified.

             SEVENTH.  Any action required by law to be taken at any
        annual or special meeting of stockholders of the corporation, or
        any action which may be taken at any annual or special meeting of
        such stockholders, shall be taken only at such a meeting.

             Except as otherwise required by law and subject to the rights
        of the holders of any class or series of preferred stock, special
        meetings of the shareholders of the corporation may be called only
        by (i) the board of directors pursuant to a resolution approved by
        affirmative vote of majority of the directors then in office, (ii)
        the Chairman of the Board, if one is elected, (iii) the President,
        or (iv) the holders of at least sixty-six and two-thirds percent
        (66 2/3%) of the then outstanding shares of stock entitled to vote
        generally in the election of directors.  Only those matters set
        forth in the notice of special meeting may be considered or acted
        upon at such special meeting, unless otherwise provided by law.
        Advance notice of any matters which shareholders intend to propose
        for action at an annual meeting shall be given in the manner
        provided in the by-laws of the corporation.

             EIGHTH.  Whenever a compromise or arrangement is proposed
        between this corporation and its creditors or any class of them
        and/or between this corporation and its stockholders or any class
        of them, any court of equitable jurisdiction within the State of
        Delaware may, on the application in a summary way of this
        corporation or of any creditor or stockholder thereof or on the
        application of any receiver or receivers appointed for this
        corporation under Section 291 of Title 8 of Delaware Code or on
        the application of trustees in dissolution or of any receiver or
        receivers appointed for this corporation under Section 279 of
        Title 8 of the Delaware Code order a meeting of the creditors or
        class of creditors, and/or of the stockholders or class of
        stockholders of this corporation, as the case may be, to be
        summoned in such manner as the said court directs.  If a majority
        in number representing three-fourths in value of the creditors or
        class of creditors, and/or of the stockholders or class of
        stockholders of this corporation, as the case may be, agree to any
        compromise or arrangement and to any reorganization of this
        corporation as a consequence of such compromise or arrangement,
        the said compromise or arrangement and the said reorganization
        shall, if sanctioned by the court to which the said application
        has been made, be binding on all the creditors or class of
        creditors, and/or on all the stockholders or class of
        stockholders, of this corporation, as the case may be, and also on
        this corporation.

             NINTH.  The corporation reserves the right to repeal, alter
        or amend this certificate of incorporation in the manner now or
        hereafter prescribed by statute and this certificate of
        incorporation, and all rights conferred upon stockholders herein
        are granted subject to this reservation.  No repeal, alteration or

                                       - 6 -<PAGE>




        amendment of this certificate of incorporation shall be made
        unless the same is first approved by the board of directors of the
        corporation pursuant to a resolution adopted by the affirmative
        vote of a majority of the directors then in office, and thereafter
        approved by the shareholders.  For the purposes of the foregoing
        sentence, and notwithstanding any other provisions of this
        certificate of incorporation or the by-laws of the corporation
        (and notwithstanding the fact that a lesser percentage may be
        specified by law, this certificate of incorporation or the by-laws
        of the corporation), the affirmative vote of the holders of at
        least sixty-six and two-thirds percent (66 2/3%) of the then
        outstanding shares of stock entitled to vote thereon (or such
        greater proportion as may be required by law), voting together as
        a single class, at a duly constituted meeting of shareholders
        called expressly for such purpose, shall be required to repeal,
        alter or amend any provision of, or adopt any provision
        inconsistent with, this Article NINTH, Sections B, C and D of
        Article FIFTH, Article SIXTH, or Article SEVENTH.





































                                       - 7 -




                                   EXHIBIT B-2

                         AQUILA BIOPHARMACEUTICALS, INC.
                                     BY-LAWS


                                    ARTICLE I
                             MEETING OF STOCKHOLDERS

            Section 1.   Place of Meetings.  All meetings of the
        stockholders shall be held at such place within or without the
        State of Delaware as may be fixed from time to time by the board
        of directors or the chief executive officer, or if not so
        designated, at the registered office of the corporation.

            Section 2.   Annual Meeting.  Annual meetings of stockholders
        shall be held on the second Tuesday in April in each year if not
        a legal holiday, and if a legal holiday, then on the next secular
        day following, at 10:00 a.m., or at such other date and time as
        shall be designated from time to time by the board of directors
        or the chief executive officer, at which meeting the stockholders
        shall elect by a plurality vote a board of directors and shall
        transact such other business as may properly be brought before
        the meeting.  If no annual meeting is held in accordance with the
        foregoing provisions, the board of directors shall cause the
        meeting to be held as soon as thereafter as convenient.

            Section 3.   Matters to be Considered at Meetings.  At a
        meeting of stockholders, only such business shall be conducted,
        and only such proposals shall be acted upon, as shall have been
        properly brought before the meeting (i) by, or at the direction
        of, a majority of the board of directors, or (ii) by any
        stockholder of the corporation who complies with the notice
        procedures set forth in this Section 3.  For a proposal to be
        properly brought before the meeting by a stockholder, the
        stockholder must have given timely notice thereof in writing to
        the secretary of the corporation.  To be timely, a stockholder's
        notice must be delivered to, or mailed and received at, the
        principal executive offices of the corporation not less than 60
        days nor more than 150 days prior to the scheduled meeting,
        regardless of any postponements, deferrals or adjournments of
        that meeting to a later date; provided, however, that if less
        than 70 days' notice of prior public disclosure of the date of
        the scheduled meeting is given or made, notice by the stockholder
        to be timely must be so delivered or received not later than the
        close of business on the 10th day following the earlier of (1)
        the day on which such notice of the date of the scheduled meeting
        was mailed or (2) the day on which such public disclosure was
        made.  A stockholder's notice to the secretary shall set forth as
        to each matter the stockholder proposes to bring before the
        meeting (a) a brief description of the proposal desired to be
        brought before the meeting and the reasons for conducting such
        business at the meeting, (b) the name and address, as they appear
        on the corporation's stock transfer books, of the stockholder
        proposing such business and of the beneficial owners (if any) of
        the stock registered in such stockholder's name and the name and<PAGE>




        address of other stockholders known by such stockholder to be
        supporting such proposal, (c) the class and number of shares of
        the corporation's capital stock which are beneficially owned by
        such stockholder and beneficial owners (if any) on the date of
        such stockholder's notice and by any other stockholders known by
        such stockholder to be supporting such proposal on the date of
        such stockholder's notice, and (d) any financial interest of the
        stockholder in such proposal.

                 If the board of directors, or a designated committee
        thereof, determines that any stockholder proposal was not timely
        made in accordance with the terms of this Section 3, the board of
        directors may determine that such stockholder proposal will not
        be acted upon at the meeting.  If the board of directors, or a
        designated committee thereof, determines that the information
        provided in a stockholder's notice does not satisfy the
        informational requirements of this Section 3 in any respect, the
        secretary of the corporation shall promptly notify such
        stockholder of the deficiency in the notice.  The stockholder
        shall have an opportunity to cure the deficiency by providing
        additional information to the secretary within such period of
        time, not to exceed seven days from the date such deficiency
        notice is mailed or five days from the date such deficiency
        notice is given to the stockholder, as the board of directors or
        such committee shall reasonably determine.  If the deficiency is
        not cured within such period, or if the board of directors or
        such committee determines that the additional information
        provided by the stockholder, together with the information
        previously provided, does not satisfy the requirements of this
        Section 3 in any respect, then the board of directors may
        determine that such stockholder proposal will not be acted upon
        at the meeting.  The secretary of the corporation shall notify a
        stockholder in writing if the board of directors, or a designated
        committee thereof, determines that his proposal does not meet the
        time and informational requirements of this Section 3; provided,
        however, that any notice from a person or entity who is not a
        stockholder of record shall not be deemed to be a "notice" for
        the purposes of this Section 3 and may be disregarded by the
        corporation and its officers.

                 Notwithstanding the procedure set forth in the preceding
        paragraph, if neither the board of directors nor such committee
        makes a determination as to the validity of any stockholder
        proposal, the presiding officer of the meeting shall determine
        and declare at the meeting whether the stockholder proposal was
        made in accordance with the terms of this Section 3.  If the
        presiding officer determines that a stockholder proposal was made
        in accordance with the terms of this Section 3, he shall so
        declare at the meeting and ballots, if so requested by such
        stockholder, shall be provided for use at the meeting with
        respect to any such proposal.  If the presiding officer
        determines that a stockholder proposal was not made in accordance
        with the terms of this Section 3, he shall so declare at the


                                      - 2 -<PAGE>




        meeting and any such proposal shall not be acted upon at the
        meeting.

                 The provisions of this Section 3 shall not prevent the
        consideration and approval or disapproval at the meeting of
        reports of officers, directors and committees of the board of
        directors, but in connection with such reports, no new business
        shall be acted upon at such meeting unless the proposal with
        respect thereto has been stated, filed and received as herein
        provided.

            Section 4.   Special Meetings.  Special meetings of the
        stockholders of the corporation may be called only in the manner
        provided in the certificate of incorporation.

            Section 5.   Matters to be Considered at Special Meetings.
        Only those matters set forth in the notice of the special meeting
        may be considered or acted upon at such special meeting, unless
        otherwise provided by law.

            Section 6.   Notice of Meetings.  Except as otherwise
        provided by law, written notice of each meeting of stockholders,
        annual or special, stating the place, date and hour of the
        meeting and, in the case of a special meeting, the purpose or
        purposes for which the meeting is called, shall be given not less
        than ten or more than sixty days before the date of the meeting,
        to each stockholder entitled to vote at such meeting.

            Section 7.   Voting List.  The officer who has charge of the
        stock ledger of the corporation shall prepare and make, at least
        ten days before every meeting of stockholders, a complete list of
        the stockholders entitled to vote at the meeting, arranged in
        alphabetical order, and showing the address of each stockholder
        and the number of shares registered in the name of each
        stockholder.  Such list shall be open to the examination of any
        stockholder, for any purpose germane to the meeting, during
        ordinary business hours, for a period of at least ten days prior
        to the meeting, either at a place within the city or town where
        the meeting is to be held, which place shall be specified in the
        notice of the meeting, or, if not so specified, at the place
        where the meeting is to be held.  The list shall also be produced
        and kept at the time and place of the meeting during the whole
        time thereof, and may be inspected by any stockholder who is
        present.

            Section 8.   Quorum.  The holders of a majority of the stock
        issued and outstanding and entitled to vote thereat, present in
        person or represented by proxy, shall constitute a quorum at all
        meetings of the stockholders for the transaction of business,
        except as otherwise provided by statute, the certificate of
        incorporation or these by-laws.  Where more than one class or
        series of capital stock is entitled to vote separately at such a
        meeting, a majority of the shares of each such class or series of


                                      - 3 -<PAGE>




        capital stock entitled to vote at such meeting shall constitute a
        quorum at such meeting.

            Section 9.   Adjournments.  Any meeting of stockholders may
        be adjourned from time to time to any other time and to any other
        place at which a meeting of stockholders may be held under these
        by-laws, which time and place shall be announced at the meeting,
        by a majority of the stockholders present in person or
        represented by proxy at the meeting and entitled to vote, though
        less than a quorum, or, if no stockholder is present or
        represented by proxy, by any officer entitled to preside at or to
        act as secretary of such meeting, without notice other than
        announcement at the meeting.  At such adjourned meeting at which
        a quorum shall be present or represented any business may be
        transacted which might have been transacted at the original
        meeting.  If the adjournment is for more than thirty days, or if
        after the adjournment a new record date is fixed for the
        adjourned meeting, a notice of the adjourned meeting shall be
        given to each stockholder of record entitled to vote at the
        meeting.

            Section 10.  Action at Meetings.  When a quorum is present at
        any meeting, the vote of the holders of a majority of the stock
        present in person or represented by proxy and entitled to vote on
        the question shall decide any other question brought before such
        meeting, unless the question is one upon which by express
        provision (whether of law, the certificate of incorporation or
        these by-laws) a different vote is required, in which case such
        express provision shall govern and control the decision of such
        question.

            Section 11.  Voting and Proxies.  Unless otherwise provided
        in the certificate of incorporation, each stockholder shall at
        every meeting of the stockholders be entitled to one vote for
        each share of capital stock having voting power held of record by
        such stockholder.  Each stockholder entitled to vote at a meeting
        of stockholders may authorize another person or persons to act
        for him by proxy, but no such proxy shall be voted or acted upon
        after three years from its date, unless the proxy provides for a
        longer period.  Proxies shall be filed with the secretary of the
        meeting, or of any adjournment thereof, before being voted.
        Except as otherwise limited therein, proxies shall entitle the
        persons authorized thereby to vote at any adjournment of such
        meeting, but they shall not be valid after final adjournment of
        such meeting.  A proxy with respect to stock held in the name of
        two or more persons shall be valid if executed by or on behalf of
        any one of them unless at or prior to the exercise of the proxy
        the corporation receives a specific written notice to the
        contrary from any one of them.






                                      - 4 -<PAGE>




                                    ARTICLE II
                                    DIRECTORS

            Section 1.   Number, Election, Tenure and Qualification.  The
        number of directors which shall constitute the whole board shall
        be not less than one.  Except as otherwise fixed pursuant to the
        provisions of Article FIFTH of the certificate of incorporation
        relating to the rights of the holders of any class or series of
        preferred stock to elect directors, the number of directors of
        the corporation shall be fixed by resolution duly adopted from
        time to time by the board of directors.  The directors, other
        than those who may be elected by the holders of any class or
        series of preferred stock, shall be classified, with respect to
        the term for which they severally hold office, into three
        classes, as nearly equal in number as possible as determined by
        the board of directors.  The directors shall be elected at the
        annual meeting of the stockholders, except as provided in
        Section 4 of this Article, and each director elected shall hold
        office until his successor is elected and qualified or until his
        earlier death, resignation or removal.  Directors need not be
        stockholders.

            Section 2.   Enlargement.  The number of the board of
        directors may be increased at any time by vote of a majority of
        the directors then in office.

            Section 3.   Director Nominations.  Nominations of candidates
        for election as directors of the corporation at any annual or
        special meeting of stockholders at which directors will be
        elected may be made (a) by, or at the direction of, a majority of
        the board of directors or a subcommittee thereof or (b) by any
        stockholder entitled to vote at such meeting.  Only persons
        nominated in accordance with the procedures set forth in this
        Section 3 shall be eligible for election as directors at a
        meeting of stockholders.

                 Nominations, other than those made by, or at the
        direction of, the board of directors or a committee thereof,
        shall be made pursuant to timely notice in writing to the
        secretary of the corporation as set forth in this Section 3.  To
        be timely, a stockholder's notice shall be delivered to, or
        mailed to and received at, the principal executive offices of the
        corporation not less than 60 days nor more than 150 days prior to
        the date of the scheduled annual or special meeting, regardless
        of postponements, deferrals, or adjournments of that meeting to a
        later date; provided, however, that if less than 70 days' notice
        or prior public disclosure of the date of the scheduled meeting
        is given or made, notice by the stockholder to be timely must be
        so delivered or received not later than the close of business on
        the 10th day following the earlier of (a) the day on which such
        notice of the date of the scheduled meeting was mailed or (b) the
        day on which such public disclosure was made.  Such stockholder's
        notice shall set forth (a) as to each person whom the stockholder
        proposes to nominate for election or re-election as a director

                                      - 5 -<PAGE>




        (i) the name, age, business address and residence address of such
        person, (ii) the principal occupation or employment of such
        person, (iii) the class and number of shares of the corporation's
        capital stock which are beneficially owned by such person on the
        date of such stockholder notice and (iv) any other information
        relating to such person that is required to be disclosed in
        solicitations of proxies with respect to nominees for election as
        directors, pursuant to Regulation 14A promulgated by the
        Securities and Exchange Commission under the Securities Exchange
        Act of 1934, as amended (or any subsequent provisions replacing
        such act or rules and regulations promulgated thereunder); and
        (b) as to the stockholder giving the notice (i) the name and
        address, as they appear on the corporation's stock transfer
        books, of such stockholder and of the beneficial owners (if any)
        of the stock registered in such stockholder's name and the name
        and address of other stockholders known by such stockholder to be
        supporting such nominees and (ii) the class and number of shares
        of the corporation's capital stock which are beneficially owned
        by such stockholder and beneficial owners (if any) on the date of
        such stockholder notice and by any other stockholders known by
        such stockholder to be supporting such nominees on the date of
        such stockholder notice.  At the request of the board of
        directors, any person nominated by, or at the direction of, the
        board of directors or a committee thereof for election as a
        director at a stockholder meeting shall furnish to the secretary
        of the corporation that information required to be set forth in a
        stockholder's notice of nomination which pertains to the nominee.

                 No person shall be elected by the stockholders as a
        director of the corporation unless nominated in accordance with
        the procedures set forth in this Section 3 and unless such
        candidate is placed into nomination by the board of directors or
        a stockholder at the meeting.  Election of directors at a meeting
        need not be by written ballot, unless otherwise provided by the
        board of directors or presiding officer at such annual meeting.
        If written ballots are to be used, ballots bearing the names of
        all the persons who have been nominated at the meeting for
        election as directors at the meeting in accordance with the
        procedures set forth in this Section 3 shall be provided.

                 The board of directors may reject any nomination by a
        stockholder not timely made in accordance with the requirements
        of this Section 3.  If the board of directors, or a designated
        committee thereof, determines that the information provided in a
        stockholder's notice does not satisfy the informational
        requirements of this Section 3 in any respect, the secretary of
        the corporation shall promptly notify such stockholder of the
        deficiency in the notice.  The stockholder shall have an
        opportunity to cure the deficiency by providing additional
        information to the secretary within such period of time, not to
        exceed seven days from the date such deficiency notice is mailed
        or five days from the date such deficiency notice is given to the
        stockholder, as the board of directors or such committee shall
        reasonably determine.  If the deficiency is not cured within such

                                      - 6 -<PAGE>




        period, or if the board of directors or such committee reasonably
        determines that the additional information provided by the
        stockholder, together with the information previously provided,
        does not satisfy the requirements of this Section 3 in any
        respect, then the board of directors may reject such
        stockholder's nomination.  The secretary of the corporation shall
        notify a stockholder in writing if the board of directors, or a
        designated committee thereof, determines that his nomination does
        not meet the time and informational requirements of this Section
        3; provided, however, that any notice from a person or entity who
        is not a stockholder of record shall not be deemed to be a
        "notice" for purposes of this Section 3 and may be disregarded by
        the corporation and its officers.

                 Notwithstanding the procedure set forth in the preceding
        paragraph, if neither the board of directors nor such committee
        makes a determination as to the validity of any nominations by a
        stockholder, the presiding officer of the meeting shall determine
        and declare at the meeting whether a nomination was made in
        accordance with the terms of this Section 3.  If the presiding
        officer determines that a nomination was made in accordance with
        the terms of this Section 3, he shall so declare at the meeting
        and ballots, if so requested by such stockholder, shall be
        provided for use at the meeting with respect to such nominee.  If
        the presiding officer determines that a nomination was not made
        in accordance with the terms of this Section 3, he shall so
        declare at the meeting and such nomination shall be disregarded.

            Section 4.   Vacancies.  Any vacancy occurring on the board
        of directors, including any newly created directorships resulting
        from an increase in the number of directors or any vacancy
        resulting from death, resignation, disqualification, removal or
        other cause, shall be filled in the manner provided in Article
        SIXTH, paragraph G of the certificate of incorporation.

            Section 5.   Resignation and Removal.  Any director may
        resign at any time upon written notice to the corporation at its
        principal place of business or to the president or secretary.
        Such resignation shall be effective upon receipt unless it is
        specified to be effective at some other time or upon the
        happening of some other event.  Any director may be removed from
        office in the manner provided in Article SIXTH, paragraph F of
        the certificate of incorporation.

            Section 6.   General Powers.  The business and affairs of the
        corporation shall be managed by its board of directors, which may
        exercise all powers of the corporation and do all such lawful
        acts and things as are not by statute or by the certificate of
        incorporation or by these by-laws directed or required to be
        exercised or done by the stockholders.  In the event of a vacancy
        in the board of directors, the remaining directors, except as
        otherwise provided by law, may exercise the powers of the full
        board until the vacancy is filled.


                                      - 7 -<PAGE>




            Section 7.   Chairman of the Board.  If the board of
        directors appoints a chairman of the board, he shall, when
        present, preside at all meetings of the board of directors.  He
        shall perform such duties and possess such powers as are
        customarily vested in the office of the chairman of the board or
        as may be vested in him by the board of directors.

            Section 8.   Place of Meetings.  The board of directors of
        the corporation may hold meetings, both regular and special,
        either within or without the State of Delaware.

            Section 9.   Regular Meetings.  Regular meetings of the board
        of directors may be held without notice at such time and at such
        place as shall from time to time be determined by the board;
        provided that any director who is absent when such a
        determination is made shall be given notice of such determination
        at least three days in advance of any such meeting.  A regular
        meeting of the board of directors may be held without notice
        immediately after and at the same place as the annual meeting of
        stockholders.

            Section 10.  Special Meetings, Notice.  Special meetings of
        the board may be called by the chief executive officer,
        secretary, or on the written request of two or more directors, or
        by one director in the event that there is only one director in
        office.  Two days notice to each director, orally, by overnight
        courier service or by written electronic means permitted by
        Section I of Article IV sent to his business or home address, or
        three days notice by written notice deposited in the mail, shall
        be given to each director by the secretary or by the officer or
        one of the directors calling the meeting.  A notice or waiver of
        notice of a meeting of the board of directors need not specify
        the purposes of the meeting.

            Section 11.  Quorum, Action at Meeting, Adjournments.  At all
        meetings of the board, a majority of directors shall constitute a
        quorum for the transaction of business and the act of a majority
        of the directors present at any meeting at which there is a
        quorum shall be the act of the board of directors, except as may
        be otherwise specifically provided by law or by the certificate
        of incorporation.  If a quorum shall not be present at any
        meeting of the board of directors, a majority of the directors
        present thereat may adjourn the meeting from time to time,
        without notice other than announcement at the meeting, until a
        quorum shall be present.

            Section 12.  Action by Consent.  Unless otherwise restricted
        by the certificate of incorporation or these by-laws, any action
        required or permitted to be taken at any meeting of the board of
        directors or of any committee thereof may be taken without a
        meeting, if all members of the board or committee, as the case
        may be, consent thereto in writing, and the writing or writings
        are filed with the minutes of proceedings of the board or
        committee.

                                      - 8 -<PAGE>




            Section 13.  Telephonic Meetings.  Unless otherwise
        restricted by the certificate of incorporation or these by-laws,
        members of the board of directors, or any committee designated by
        the board of directors, may participate in a meeting of the board
        of directors, or of such committee, by means of conference
        telephone or similar communications equipment by means of which
        all persons participating in the meeting can hear each other, and
        such participation in a meeting shall constitute presence in
        person at the meeting.

            Section 14.  Committees.  The board of directors may, by
        resolution passed by a majority of the whole board, designate one
        or more committees, each committee to consist of one or more of
        the directors of the corporation.  The board may designate one or
        more directors as alternate members of any committee, who may
        replace any absent or disqualified member at any meeting of the
        committee.  Any such committee, to the extent provided in the
        resolution of the board of directors, shall have and may exercise
        all the powers and authority of the board of directors in the
        management of the business and affairs of the corporation, and
        may authorize the seal of the corporation to be affixed to all
        papers which may require it; but no such committee shall have the
        power or authority in reference to amending the certificate of
        incorporation, adopting an agreement of merger or consolidation,
        recommending to the stockholders the sale, lease, exchange,
        mortgage, pledge or encumbrance of all or substantially all of
        the corporation's property and assets, recommending to the
        stockholders a dissolution of the corporation or a revocation of
        a dissolution, or amending the by-laws of the corporation; and,
        unless the resolution designating such committee or the
        certificate of incorporation expressly so provides, no such
        committee shall have the power or authority to declare a dividend
        or to authorize the issuance of stock.  Such committee or
        committees shall have such name or names as may be designated
        from time to time by resolution adopted by the board of
        directors.  Each committee shall keep regular minutes of its
        meetings and make such reports to the board of directors as the
        board of directors may request.  Except as the board of directors
        may otherwise determine, any committee may make rules for the
        conduct of its business, but unless otherwise provided by the
        directors or in such rules, its business shall be conducted as
        nearly as possible in the same manner as is provided in these by-
        laws for the conduct of its business by the board of directors.

            Section 15.  Compensation.  Unless otherwise restricted by
        the certificate of incorporation or these by-laws, the board of
        directors shall have the authority to fix from time to time the
        compensation of directors.  The directors may be paid their
        expenses, if any, of attendance at each meeting of the board of
        directors and the performance of their responsibilities as
        directors and may be paid a fixed sum for attendance at each
        meeting of the board of directors and/or a stated salary as
        director.  No such payment shall preclude any director from
        serving the corporation or its parent or subsidiary corporations

                                      - 9 -<PAGE>




        in any other capacity and receiving compensation therefor.  The
        board of directors may also allow members of special or standing
        committees compensation for service on such committees.


                                   ARTICLE III
                                 INDEMNIFICATION

            Section 1.   Actions Other than by or in the Right of the
        Corporation.  The corporation shall indemnify any person who was
        or is a party or is threatened to be made a party to any
        threatened, pending or completed action, suit or proceeding,
        whether civil, criminal, administrative or investigative (other
        than an action by or in the right of the corporation) by reason
        of the fact that he is or was a director, officer, employee or
        agent of the corporation, or is or was serving at the request of
        the corporation as a director, officer, employee or agent of
        another corporation, partnership, joint venture, trust or other
        enterprise, against expenses (including attorneys' fees),
        judgments, fines and amounts paid in settlement actually and
        reasonably incurred by him in connection with such action, suit
        or proceeding if he acted in good faith and in a manner he
        reasonably believed to be in or not opposed to the best interests
        of the corporation, and, with respect to any criminal action or
        proceedings, had no reasonable cause to believe his conduct was
        unlawful.  The termination of any action, suit or proceeding by
        judgment, order, settlement, conviction, or upon a plea of nolo
        contendere or its equivalent, shall not, of itself, create a
        presumption that the person did not act in good faith and in a
        manner which he reasonably believed to be in or not opposed to
        the best interests of the corporation, and, with respect to any
        criminal action or proceeding, had reasonable cause to believe
        that his conduct was unlawful.

            Section 2.   Suits by or in Right of Corporation.  The
        corporation shall indemnify any person who was or is a party or
        is threatened to be made a party to any threatened, pending or
        completed action or suit by or in the right of the corporation to
        procure a judgment in its favor by reason of the fact that he is
        or was a director, officer, employee or agent of the corporation,
        or is or was serving at the request of the corporation as a
        director, officer, employee or agent of another corporation,
        partnership, joint venture, trust or other enterprise, against
        expenses (including attorneys' fees) actually and reasonably
        incurred by him in connection with the defense or settlement of
        such action or suit if he acted in good faith and in a manner he
        reasonably believed to be in or not opposed to the best interests
        of the corporation and except that no indemnification shall be
        made in respect of any claim, issue or matter as to which such
        person shall have been adjudged to be liable to the corporation
        unless and only to the extent that the Court of Chancery of the
        State of Delaware or the court in which such action or suit was
        brought shall determine upon application that, despite the
        adjudication of liability but in view of all the circumstances of

                                      - 10 -<PAGE>




        the case, such person is fairly and reasonably entitled to
        indemnity for such expenses which the Court of Chancery of the
        State of Delaware or such other court shall deem proper.

            Section 3.   Success on the Merits.  To the extent that any
        person described in Section 1 and 2 of this Article III has been
        successful on the merits or otherwise in defense of any action,
        suit or proceeding referred to in said Sections, or in defense of
        any claim, issue or matter therein, he shall be indemnified
        against expenses (including attorneys' fees) actually and
        reasonably incurred by him in connection therewith.

            Section 4.   Specific Authorizations.  Any indemnification
        under Sections 1 and 2 of this Article III (unless ordered by a
        court) shall be made by the corporation only as authorized in the
        specific case upon a determination that indemnification of any
        person described in said Sections is proper in the circumstances
        because he has met the applicable standard of conduct set forth
        in said Sections.  Such determination shall be made (1) by the
        board of directors by a majority vote of a quorum consisting of
        directors who were not parties to such action, suit or
        proceeding, or (2) if such a quorum is not obtainable, or even is
        obtainable but a quorum of disinterested directors so directs, by
        independent legal counsel in a written opinion, or (3) by the
        stockholders of the corporation.

            Section 5.   Advance Payment.  Expenses incurred in defending
        a civil or criminal action, suit or proceeding may be paid by the
        corporation in advance of the final disposition of such action,
        suit or proceeding upon receipt of an undertaking by or on behalf
        of any person described in Sections 1 and 2 of this Article III
        to repay such amount if it shall ultimately be determined that he
        is not entitled to indemnification by the corporation as
        authorized in this Article III.

            Section 6.   Non-Exclusivity.  The indemnification and
        advancement of expenses provided by, or granted pursuant to, the
        other sections of this Article III shall not be deemed exclusive
        of any other rights to which those seeking indemnification or
        advancement of expenses may be entitled under any by-law,
        agreement, vote of stockholders or disinterested directors or
        otherwise, both as to action in his official capacity and as to
        action in another capacity while holding such office.

            Section 7.   Insurance.  The board of directors may
        authorize, by a vote of the majority of the full board, the
        corporation to purchase and maintain insurance on behalf of any
        person who is or was a director, officer, employee or agent of
        the corporation, or is or was serving at the request of the
        corporation as a director, officer, employee or agent of another
        corporation, partnership, joint venture, trust or other
        enterprise, against any liability asserted against him and
        incurred by him in any such capacity, or arising out of his
        status as such, whether or not the corporation would have the

                                      - 11 -<PAGE>




        power to indemnify him against such liability under the provision
        of this Article III.

            Section 8.   Benefits.  The indemnification and advancement
        of expenses provided by, or granted pursuant to, this Article
        shall, unless otherwise provided when authorized or ratified,
        continue as to a person who has ceased to be a director, officer,
        employee or agent and shall inure to the benefit of the heirs,
        executors or administrators of such person.

            Section 9.   Severability.  If any word, clause or provision
        of this Article III or any award made hereunder shall for any
        reason be determined to be invalid, all the other provisions
        hereof shall not otherwise be affected thereby but shall remain
        in full force and effect.

            Section 10.  Intent of Article.  The intent of this Article
        III is to provide for indemnification to the fullest extent
        permitted by Section 145 of the General Corporation Law of
        Delaware.  To the extent that such Section or any successor
        section may be amended or supplemented from time to time, this
        Article III shall be amended automatically and construed so as to
        permit indemnification to the fullest extent from time to time
        permitted by law.


                                    ARTICLE IV
                                     NOTICES

            Section 1.   Delivery.  Whenever, under the provisions of
        law, the certificate of incorporation or these by-laws, written
        notice is required to be given to any director or stockholder,
        such notice may be given by mail, addressed to such director or
        stockholder, at his address as it appears on the records of the
        corporation, with postage thereon prepaid, and such notice shall
        be deemed to be given at the time when the same shall be
        deposited in the United States mail.  Written notice may also be
        given by telegram, cable, telecopy, telex or similar electronic
        means or by overnight courier services, addressed to such
        director or stockholder at his address as it appears on the
        records of the corporation, in which case such notice shall be
        deemed to be given when delivered into the control of the persons
        charged with effecting such transmission, the transmission charge
        to be paid by the corporation or the person sending such notice
        and not by the addressee.  Oral notice or other in-hand delivery
        (in person or by telephone) shall be deemed given at the time it
        is actually given.

            Section 2.   Waiver of Notice.  Whenever any notice is
        required to be given under the provisions of law or of the
        certificate of incorporation or of these by-laws, a waiver
        thereof in writing, signed by the person or persons entitled to
        said notice, whether before or after the time stated therein,
        shall be deemed equivalent thereto.

                                      - 12 -<PAGE>




                                    ARTICLE V
                                     OFFICERS

            Section 1.   Enumeration.  The officers of the corporation
        shall be chosen by the board of directors and shall be a
        president, a secretary and a treasurer and such other officers
        with such titles, terms of office and duties as the board of
        directors shall from time to time determine, including a chairman
        of the board, one or more vice-presidents, and one or more
        assistant secretaries and assistant treasurers.  If authorized by
        resolution of the board of directors, the chairman of the board,
        if any, or the president may be empowered to appoint from time to
        time assistant secretaries and assistant treasurers.  Any number
        of offices may be held by the same person, unless the certificate
        of incorporation or these by-laws otherwise provide.

            Section 2.   Election.  The board of directors at its first
        meeting after each annual meeting of stockholders shall choose a
        president, a secretary and a treasurer.  Other officers may be
        appointed by the board of directors at such meeting, at any other
        meeting, or by written consent.

            Section 3.   Compensation.  The compensation of all officers
        of the corporation shall be fixed from time to time by the board
        of directors.

            Section 4.   Tenure.  Each officer of the corporation shall
        hold office until his successor is chosen and qualified, unless a
        different term is specified in the vote choosing or appointing
        him, or until his earlier death, resignation or removal.  Any
        officer elected or appointed by the board of directors or a
        committee duly authorized to do so.  Any vacancy occurring in any
        office of the corporation may, at its discretion, be filled by
        the board of directors.  Any officer may resign by delivering his
        written resignation to the corporation at its principal place of
        business or to the president or the secretary.  Such resignation
        shall be effective upon receipt unless it is specified to be
        effective at some other time or upon the happening of some other
        event.

            Section 5.   President.  The president shall be the chief
        operating officer of the corporation.  He shall also be the chief
        executive officer unless the board of directors otherwise
        provides.  The president shall, unless the board of directors
        provides otherwise in a specific instance or generally, preside
        at all meetings of the stockholders and the board of directors,
        have general and active management of the business of the
        corporation and see that all orders and resolutions of the board
        of directors are carried into effect.  The president shall
        execute bonds, mortgages, and other contracts requiring a seal,
        under the seal of the corporation except where required or
        permitted by law to be otherwise signed and executed and except
        where the signing and execution thereof shall be expressly


                                      - 13 -<PAGE>




        delegated by the board of directors to some other officer or
        agent of the corporation.

            Section 6.   Vice Presidents.  In the absence of the
        president or in the event of his inability or refusal to act, the
        vice-president (or in the event there be more than one vice-
        president, the vice-presidents in the order designated, or in the
        absence of any designation, then in the order of their election),
        shall perform the duties of the president, and when so acting,
        shall have all the powers of and be subject to all the
        restrictions upon the president.  The vice-president shall
        perform such other duties and have such other powers as the board
        of directors or the chief executive officer of the corporation
        may from time to time prescribe.

            Section 7.   Secretary.  The secretary shall have such powers
        and perform such duties as are incident to the office of
        secretary.  He shall maintain a stock ledger and prepare lists of
        stockholders and their addresses as required and shall be the
        custodian of corporate records.  The secretary shall attend all
        meetings of the board of directors and all meetings of the
        stockholders and record all the proceedings of the meetings of
        the corporation and of the board of directors in a book to be
        kept for that purpose and shall perform like duties for the
        standing committees when required.  He shall give, or cause to be
        given, notice of all meetings of the stockholders and special
        meetings of the board of directors, and shall perform such other
        duties as may be from time to time prescribed by the board of
        directors or chief executive officer of the corporation, under
        whose supervision he shall be.  He shall have custody of the
        corporate seal of the corporation and he, or an assistant
        secretary, shall have authority to affix the same to any
        instrument requiring it.  When so affixed, it may be attested by
        his signature or by the signature of such assistant secretary.
        The board of directors may give general authority to any other
        officer to affix the seal of the corporation and to attest the
        affixing by his signature.

            Section 8.   Assistant Secretaries.  The assistant secretary,
        or if there be more than one, the assistant secretaries in the
        order determined by the board of directors (or if there be no
        such determination, then in the order of their election), shall,
        in the absence of the secretary or in the event of his inability
        or refusal to act, perform the duties and exercise the powers of
        the secretary and shall perform such other duties and have such
        other powers as the board of directors, the chief executive
        officer of the corporation or the secretary may from time to time
        prescribe.  In the absence of the secretary or any assistant
        secretary at any meeting of stockholders or directors, the person
        presiding at the meeting shall designate a temporary or acting
        secretary to keep a record of the meeting.

            Section 9.   Treasurer.  The treasurer shall perform such
        duties and shall have such powers as may be assigned to him by

                                      - 14 -<PAGE>




        the board of directors or the chief executive officer.  In
        addition, the treasurer shall perform such duties and have such
        powers as are incident to the office of treasurer.  The treasurer
        shall have the custody of the corporate funds and securities and
        shall keep full and accurate accounts of receipts and
        disbursements in books belonging to the corporation and shall
        deposit all moneys and other valuable effects in the name and to
        the credit of the corporation in such depositories as may be
        designated by the board of directors.  He shall disburse the
        funds of the corporation as may be ordered by the board of
        directors, taking proper vouchers for such disbursements, and
        shall render to the chief executive officer and the board of
        directors, when the board of directors or chief executive officer
        so requires, an account of all his transactions as treasurer and
        of the financial condition of the corporation.

            Section 10.  Assistant Treasurers.  The assistant treasurer,
        or if there shall be more than one, the assistant treasurers in
        the order determined by the board of directors (or if there be no
        such determination, then in the order of their election), shall,
        in the absence of the treasurer or in the event of his inability
        or refusal to act, perform the duties and exercise the powers of
        the treasurer and shall perform such other duties and have such
        other powers as the board of directors, the chief executive
        officer or the treasurer may from time to time prescribe.

            Section 11.  Bond.  If required by the board of directors,
        any officer shall give the corporation a bond in such sum and
        with such surety or sureties and upon such terms and conditions
        as shall be satisfactory to the board of directors, including
        without limitation a bond for the faithful performance of the
        duties of his office and for the restoration to the corporation
        of all books, papers, vouchers, money and other property of
        whatever kind in his possession or under his control and
        belonging to the corporation.


                                    ARTICLE VI
                                  CAPITAL STOCK

            Section 1.   Certificates of Stock.  Every holder of stock in
        the corporation shall be entitled to have a certificate, signed
        by, or in the name of the corporation by, the chairman or vice-
        chairman of the board of directors or the president or a vice-
        president and by the treasurer or an assistant treasurer, or the
        secretary or an assistant secretary of the corporation certifying
        the number of shares owned by him in the corporation.  Any or all
        of the signatures on the certificate may be a facsimile.  In case
        any officer, transfer agent or registrar who has signed or whose
        facsimile signature has been placed upon a certificate shall have
        ceased to be such officer, transfer agent or registrar before
        such certificate is issued, it may be issued by the corporation
        with the same effect as if he were such officer, transfer agent
        or registrar before such certificate is issued, it may be issued

                                      - 15 -<PAGE>




        by the corporation with the same effect as if he were such
        officer, transfer agent or registrar at the date of issue.
        Certificates may be issued for partly paid shares and in such
        case upon the face or back of the certificates issued to
        represent any such partly paid shares, the total amount of the
        consideration to be paid therefor and the amount paid thereon
        shall be specified.

            Section 2.   Lost Certificates.  The board of directors may
        direct a new certificate or certificates to be issued in place of
        any certificate or certificates theretofore issued by the
        corporation alleged to have been lost, stolen or destroyed.  When
        authorizing such issue of new certificate or certificates, the
        board of directors may, in its discretion and as a condition
        precedent to the issuance thereof, require the owner of such
        lost, stolen or destroyed certificate or certificates, or his
        legal representative, to give reasonable evidence of such loss,
        theft or destruction, to advertise the same in such manner as it
        shall require and/or to give the corporation a bond in such sum
        as it may direct as indemnity against any claim that may be made
        against the corporation with respect to the certificate alleged
        to have been lost, stolen or destroyed or the issuance of such
        new certificate.

            Section 3.   Transfer of Stock.  Upon surrender to the
        corporation or the transfer agent of the corporation of a
        certificate for shares, duly endorsed or accompanied by proper
        evidence of succession, assignment or authority to transfer, it
        shall be the duty of the corporation to issue a new certificate
        to the person entitled thereto, cancel the old certificate and
        record the transaction upon its books.

            Section 4.   Record Date.  In order that the corporation may
        determine the stockholders entitled to notice of or to vote at
        any meeting of stockholders or any adjournment thereof, or
        entitled to receive payment of any dividend or other distribution
        or allotment of any rights, or entitled to exercise any rights in
        respect of any change, conversion or exchange of stock or for the
        purpose of any other lawful action, the board of directors may
        fix, in advance, a record date, which shall not be more than
        sixty days nor less than ten days before the date of such
        meeting, nor more than sixty days prior to any other action to
        which such record date relates.  A determination of stockholders
        of record entitled to notice of or to vote at a meeting of
        stockholders shall apply to any adjournment of the meeting;
        provided, however, that the board of directors may fix a new
        record date for the adjourned meeting.

                 If no record date is fixed, the record date for
        determining stockholders entitled to notice of or to vote at a
        meeting of stockholders shall be at the close of business on the
        day before the day on which notice is given, or, if notice is
        waived, at the close of business on the day before the day on
        which the meeting is held.  The record date for determining

                                      - 16 -<PAGE>




        stockholders for any other purpose shall be at the close of
        business on the day on which the board of directors adopts the
        resolution relating to such purpose.

            Section 5.   Registered Stockholders.  The corporation shall
        be entitled to recognize the exclusive right of a person
        registered on its books as the owner of shares to receive
        dividends, and to vote as such owner, and to hold liable for
        calls and assessments a person registered on its books as the
        owner of shares, and shall not be bound to recognize any
        equitable or other claim to or interest in such share or shares
        on the part of any other person, whether or not it shall have
        express or other notice thereof, except as otherwise provided by
        the laws of Delaware.


                                   ARTICLE VII
                               CERTAIN TRANSACTIONS

            Section 1.   Transaction with Interested Parties.  No
        contract or transaction between the corporation and one or more
        of its directors or officers, or between the corporation and any
        other corporation, partnership, association, or other
        organization in which one or more of its directors or officers
        are directors or officers, or have a financial interest, shall be
        void or voidable solely for this reason, or solely because the
        director or officer is present at or participates in the meeting
        of the board or committee thereof which authorizes the contract
        or transaction or solely because his or their votes are counted
        for such purpose, if:

                         (a)  The material facts as to his relationship
                 or interest and as to the contract or transaction are
                 disclosed or are known to the board of directors or the
                 committee, and the board or committee in good faith
                 authorizes the contract or transaction by the
                 affirmative votes of a majority of the disinterested
                 directors, even though the disinterested directors be
                 less than a quorum; or

                         (b)  The material facts as to his relationship
                 or interest and as to the contract or transaction are
                 disclosed or are known to the stockholders entitled to
                 vote thereon, and the contract or transaction is
                 specifically approved in good faith by vote of the
                 stockholders; or

                         (c)  The contract or transaction is fair as to
                 the corporation as of the time it is authorized,
                 approved or ratified by the board of directors, a
                 committee thereof, or the stockholders.




                                      - 17 -<PAGE>




            Section 2.   Quorum.  Common or interested directors may be
        counted in determining the presence of a quorum at a meeting of
        the board of directors or of a committee which authorizes the
        contract or transaction.


                                   ARTICLE VIII
                                GENERAL PROVISIONS

            Section 1.   Dividends.  Dividends upon the capital stock of
        the corporation, if any, may be declared by the board of
        directors at any regular or special meeting, pursuant to law.
        Dividends may be paid in cash, in property, or in shares of the
        capital stock, subject to the provisions of the certificate of
        incorporation.  The directors may set apart out of any funds of
        the corporation available for dividends a reserve or reserves for
        any proper purpose and may abolish any such reserve.

            Section 2.   Statement of Condition.  The board of directors
        shall present at each annual meeting, and at any special meeting
        of the stockholders when called for by vote of the stockholders,
        a full and clear statement of the business and condition of the
        corporation.

            Section 3.   Checks.  All checks or demands for money and
        notes of the corporation shall be signed by such officer or
        officers or such other person or persons as the board of
        directors may from time to time designate.

            Section 4.   Fiscal Year.  The fiscal year of the corporation
        shall be fixed by resolution of the board of directors.

            Section 5.   Seal.  The board of directors may, by
        resolution, adopt a corporate seal.  The corporate seal shall
        have inscribed thereon the name of the corporation, the year of
        its organization and the word "Delaware."  The seal may be used
        by causing it or a facsimile thereof to be impressed or affixed
        or reproduced or otherwise.  The seal may be altered from time to
        time by the board of directors.


                                    ARTICLE IX
                                    AMENDMENTS

            These by-laws may be altered, amended or repealed, or new by-
        laws may be adopted, by the board of directors or by the
        stockholders, in each case in the manner provided in the
        certificate of incorporation.







                                      - 18 -




                                     EXHIBIT C

                      SUMMARY OF ENTERICS ASSETS AND BUSINESS



        The Enterics Business consists of tangible and intangible assets
        related to the following products (the "Enteric Products")
        manufactured by CBC:

             Rotaclone
             Adenoclone GSA
             Adenoclone 40/41
             Cytoclone A+B
             Lyme EIA

        Included in the assets, as they relate to the Enteric Products,
        are inventories of finished product held by CBC; customer lists,
        historical customer records, contracts and pending purchase
        orders; goodwill; copyrights and trademarks specifically related
        to the Enteric Products; marketing materials; manufacturing
        documentation; product development documentation; technical
        information, trade secrets, patents, patent applications and
        licenses; regulatory permits and authorization, filings and
        documentation; and certain equipment and instrumentation.

        In connection with the sale of the Enterics Business, Aquila
        expects to have ongoing obligations, to be performed during 1996,
        to manufacture approximately one year's supply of Enteric
        Products, to supply certain raw materials, to assist in
        transferring the manufacturing technology to the purchaser, and to
        train certain of the purchaser's personnel in various aspects of
        the business.




                                    EXHIBIT D

                    SUMMARY OF RETROVIRAL ASSETS AND BUSINESS

        All right, title and interest of CBC in and to the assets
        constituting the Diagnostics Business (as defined on Annex G),
        including all the following:

        A.   All CBC's right, title and interest in the machinery,
        equipment, and inventories of raw materials and supplies,
        manufactured and purchased parts, goods in process and finished
        goods, furniture, automobiles, trucks, tractors, trailers, tools,
        jigs and dies) of CBC located in Rockville, Maryland.

        B.   All rights and obligations under employment contracts with
        employees located in Rockville, Maryland.

        C.   All claims, deposits, prepayments, refunds, causes of
        action, choses in action, rights of recovery, rights of set off
        and rights of recoupment, including any such item relating to the
        payment of Taxes.

        D.   All franchises, approvals, permits, licenses, orders,
        registration, certificates, variances and similar rights obtained
        from governments and governmental agencies that pertain to the
        Diagnostics Business.

        E.   All CBC's right, title and interest to the following
        intellectual property, including any goodwill associated
        therewith, licenses and sublicenses granted and obtained with
        respect thereto (except as otherwise provided below), rights
        thereunder, remedies against infringements thereof and rights to
        protection of interests therein under the laws of all
        jurisdictions:

             1    The following United States patents and patent
             applications (and corresponding foreign patents and patent
             applications) and rights under the licenses owned or
             controlled by CBC:

             Immunoassay Strip Cutter      U.S. Patent No. 4,738,177
                                                           (abandoned)

             Process for Purifying         U.S. Patent No. 06/911/455<PAGE>




             Recombinant Proteins, and                     4,734,362
             Use of Products Thereof
             (the "Protein Purifying
             Patent")

             Detection of Antibodies to    U.S. Patent No. 07/044,665
              Human immunodeficiency                       4,921,787
              Agglutination of Antigen
              Coated Latex

             Diagnostic Proteins To        U.S. Patent No. 07/433,7O9
              Test for More Than
              One Antibody

             T-Lymphocropic Virus          U.S. Patent No. 08/378,872

             U.S. Patent No. 5,145,784, Double Capture Assay

             License Agreement with Harvard University dated May 1, 1987
             as amended, covering among other patents and patent
             applications the following (the "Harvard Patents"):

                  U.S. Patent Nos. 4,743,678 and 5,045,448, HTLV-I virus
                  proteins and antigens (gp61) and diagnostic methods

                  U.S. Patent No. 4,725,669 and U.S. Patent Application
                  Ser. No. 056,134, HIV Glycoproteins (gp120) and
                  diagnostic methods

                  U.S. Patent Application Ser. No. 07/602,846, T-
                  Lymphotrophic Virus proteins and antigens (SIV/HIV-2)
                  and diagnostic methods

                  U.S. Patent No. 5,068,174, T-Cell Lymphotrophic Virus
                  Protein (p27) and Assay

             License Agreement between the President and fellows of
             Harvard and CDC, dated October 29, 1993. (CBC has abandoned
             the patent which is the subject of this Agreement.)

             License Agreement among National Technical Information
             Service, E.I. Du Pont de Nemours and Company and Biotech
             Research Laboratories, Inc. dated June 19, 1984.

             License Agreement with National Technical Information
             Service dated February 1, 1989 relating to HIV-1 (Gallo
             portfolio).

             License Agreement dated June 15, 1988 with National
             Technical information Service relating to HTLV-I





                                      - 2 -<PAGE>




             Royalty-Bearing Cross License Agreement, Royalty-Free Cross
             License Agreement (and associated Agreements not to
             Challenge) with Diagnostic Pasteur dated October 25, 1989,
             covering the patents and patent applications identified
             therein (the "DP HIV Technology").

             Biological Material Transfer Agreement effective April 17,
             1991 with the Centers for Disease Control/Center for
             Infectious Disease (HIV-2 cell line)

             License Agreement with Hugh Cottingham dated February 15,
             1982, as amended, covering the patents and patent
             application issuing therefrom (agglutinographic reaction
             chamber and detection apparatus) including:

             U.S. Des. Patent No. 355,493, Slide Immunoassay Detection
             System

             U.S. Patent No. 4,459,361, Ligand Assay with I or 2
             Particulate Reagents, (1984)

             U.S. Patent No. 4,806,015, Agglutination Detection
             Apparatus, (1989)

             U.S. Patent No. 07/984,231, T-Lymphotropic Virus (1985)

             Methods of Conjugation of Proteins for FC Capture Assays, no
             patent applied for.

             2    The following agreements:

             License Agreement between Syva Company, Syntex (U.S.A.)
             Inc., and CBC dated June 29, 1992, covering the "Tom" patent
             (U.S. Patent No. 4,366,241).

             License Agreement between CBC and Syva Company dated
             June 29, 1992.

             Biomira-CBC License Agreement dated February 28, 1994
             (relating to Biomira's cancer markers).

             License Agreement between CBC and Biomira dated February 28,
             1994.

             License Agreement between CBC and ADI Diagnostics, Inc.
             dated February 28, 1994 (hepatitis and syphilis antigens).

             License Agreement between CBC and ADI Diagnostics, Inc.
             dated February 28, 1994.

             Selfcare/Galway Agreements dated November 30, 1993
             pertaining to Sale of Irish Subsidiary and Related
             Transactions (approved by Order of U.S. Bankruptcy Court on
             November 14, 1994).

                                      - 3 -<PAGE>




             License, Supply and Development Agreement among CBC, Ortho
             Diagnostics Systems Inc. and Chiron Corporation, dated
             March 30, 1993 (relating to the following Harvard patents
             licensed by CBC: 4,743,678; 5,045,448; 795,944; 664,972)
             unless rejected at Purchaser's direction pursuant to Section
             6.18 of the Agreement.

             License Agreement between CBC and F. Hoffman-La Roche Ltd.,
             dated March 29, 1991 (relating to the following patent
             licensed by CBC: 4,596,695).

             License Agreement between Hoffman-La Roche, Inc. and
             Angenics, dated August 19, 1986 (relating to the following
             patent licensed by CBC: 4,596,695).

             License Agreement between Hoffman-La Roche, Inc. and
             Angenics, dated July 23, 1986 (relating to the following
             patent licensed by CBC: 4,597,944).

             Sublicense Agreement between CBC and Abbott Laboratories,
             dated December 2, 1988 (relating to the following Harvard
             patents licensed by CBC: 4,725,669 and 056,134).

             Sublicense Agreement between CBC and Abbott Laboratories,
             dated June 30, 1992 (relating no the following Harvard
             patents: 4,743,678 and 5,045,448).

             Sublicense Agreement between CBC and Baxter International,
             Inc., dated June 21, 1989 (relating to the following Harvard
             patents licensed by CBC: 4,725,669 and 056,134).

             Sublicense Agreement between CBC and Smithkline Beckman
             Corporation, dated June 30, 1989 (relating to the following
             Harvard patents licensed by CBC: 4,725,669 and 056,134)

             Sublicense Agreement between CBC and Pharmacia ENI Diagnos-
             tics, Inc., dated December 29, 1989 (relating to the
             following Harvard patents licensed by CBC: 4,725,669;
             056,134; and 795,997).

             Sublicense Agreement between CBC and Becton, Dickinson and
             Company, dated January 3, 1989 (relating to the following
             Harvard patents licensed by CBC: 4,725,669 , 795,997 and
             056,134).

             Sublicense Agreement between CBC and Behringwerke
             Aktiengesellschaft, dated September 30, 1989 (relating to
             the following Harvard patents licensed by CBC: 4,725,669,
             795,997 and 056,134).

             Sublicense Agreement between CBC and IAF Biochem
             International, Inc., dated June 26, 1991 (relating to the
             following Harvard patents licensed by CBC: 4,725,669 and
             056,134).

                                      - 4 -<PAGE>




             Sublicense Agreement between CBC and Progenics
             Pharmaceuticals, Inc., dated March 17, 1995.

             Sublicense Agreement between CBC and Urnotech Calypte
             Biomedical Corporation, dated March 31, 1992 (relating to
             the following Harvard patents licensed by CBC: 4,725,669 and
             056,134).

             Cross-License Agreement among CBC, Chiron Corporation and
             The President and Fellows of Harvard College, dated
             September 23, 1991 (relating to the following Harvard
             patents licensed by CBC: 4,725,669 and 056,134).

             Sublicense Agreement between CBC and Chiron Corporation,
             dated August 21, 1992 (relating to the following Harvard
             patents licensed by CBC: 4,725,669 and 056,134).

             Sublicense Agreement between CBC and Genentech, Inc., dated
             September 30, 1991 (relating to the following Harvard
             patents licensed by CBC: 4,725,669 and 056,134).

             Sublicense Agreement between CBC and Repligen Corporation,
             dated April 4, 1990 (relating to the following Harvard
             patents licensed by CBC: 4,725,669, and 056,134).

             License and Sublicense Agreement between International Murex
             Technologies Corp. and CBC, dated June 30, 1992 (relating to
             the following Harvard patents licensed to CBC: 4,743,678 and
             5,045,448).

             License Agreement between Mitest Ltd. and CBC, dated
             December 15, 1993 (relating to the following patents
             licensed by CBC: 4,596,695 and 4,775,515).

             Amended License Agreement between CBC and Pasteur Merieux
             Serums & Vaccins, S.A., dated December 14, 1990 (relating to
             CBC-owned patent: 4,734,362 and CBC-licensed Harvard patent
             4,725,669).

             Sublicense Agreement between MicroGeneSys, Inc., dated
             February 29, 1996 (relating to the CDC-licensed Harvard
             patent 4,725,669) (subject to the approval of the Bankruptcy
             Court).

             License Agreements among Angenics, Hugh V. Cottingham, and
             Carter-Wallace, Inc., dated April 1, 1987.

             3    Manufacturing and research and development trade
             secrets and documentation relating to the Products.

             4    Clones and seed stocks relating to the Products.




                                      - 5 -<PAGE>




             5    U.S. Patent No. 4,753,873, Peptides for the Diagnosis
             of HTLV-III Antibodies, Their Preparation and Use; provided
             that CBC shall grant to the Seller a paid-up worldwide non-
             exclusive license, not sublicensable except as to
             affiliates, to make, have made, use and sell products using
             the patented technology in the diagnostic field.

             6    All copyrights, trademarks and tradenames applicable to
             or used in connection with the Products including the
             following: RECOMBIGEN, CAPILLUS, and CAMBRIDGE BIOTECH and
             "VIRUS" design.  To the extent necessary, arrangements shall
             be made for the Seller to receive rights to use the name
             Recombigen in connection with Products for which it shall be
             responsible.

        F.   All CBC's supply and distribution agreements relating to the
        Products .

              including the following:

             Any distribution agreement with Ortho Diagnostic Systems
             Inc. which CBC may enter into.

             License, Supply and Development Agreement among CBC, Ortho
             Diagnostic Systems, Inc. and Chiron Corporation, dated
             March 30, 1993 (HTLV).

             Material Transfer and License Agreement between CBC and
             Ortho Diagnostic Systems, Inc., dated November 15, 1993.

             Material Transfer and License Agreement between CBC and
             Chiron Corporation, dated November 15, 1993.

             Material Transfer Agreement between Ortho, Chiron and CBC
             dated January 7, 1993.

             Any distribution agreement with Dade Diagnostics Pty Ltd
             which CBC may enter into.

             Any agreement with Calypte Biomedical, relating to
             modification of the HIV-1 Western Blot product for use with
             urine samples and distribution of such product, which CBC
             may enter into.

             Any Agreement with Seradyn, Inc. relating to distribution of
             HIV-1 Western blot products for use with urine samples.

             Any agreement with Direct Access which CBC may enter into. 







                                      - 6 -<PAGE>




             G.   All books, records, ledgers, files, documents,
             regulatory file histories, correspondence, lists, plats,
             architectural plans, drawings and specifications, creative
             materials, advertising, promotional or sales and marketing
             materials, laboratory notebooks, vendor information,
             studies, reports and other printed or written material or
             documentation of CBC located in Worcester, Massachusetts and
             Rockville, Maryland relating to (i) the development,
             manufacture, use or sale of the Products or (ii) the Diag-
             nostics Business.

             H.   CBC's equity interest in CBC Affiliate Corp. ("CAC").

             I.   Sublease Agreement between CBC and DynCorp, dated April
             6, 1995 for 1,044 square feet of office and laboratory space
             in a building located at 1 Taft Court, Rockville, Maryland.

             As used above, the term "Diagnostics Business" refers to 

                  (i)

                  such operations which relate to the line of screening
                  and confirmatory products directed to retroviruses and
                  other infectious diseases, except for (a) Lyme EIA
                  products, (b) enterics products to the extent rights
                  thereto are retained (c) diagnostic products for tick
                  borne diseases including human granulocytic
                  ehrlichiosis, and (d) CBC's animal health diagnostic
                  tests, but including, without limitation, HIV-1 Western
                  Blot (FDA-licensed), HIV-1 AP Western Blot, HIV-2
                  Western Blot, HTLV-1/IT Western Blot, HTLV-I EIA, HTLV-
                  I (rp21e) EIA, HTLV Envelope EIA, Recombigen HIV-1 LA,
                  Lyme IgM Western Blot, and Lyme IgG Western Blot,
                  recombinant antigen p21e, HIV-1 EIA, HIV-1/2 EIA,
                  Microtrak HIV-1 EIA and HIV-1/2 EIA and Recombigen HIV-
                  1 LA (Such line of included screening and confirmatory
                  products being referred to herein as the "Products").

                  (ii) all operations and the assets thereof of CBC
                  located in Rockville, Maryland and all assets of CBC
                  (a) utilized by CBC for the manufacture, use and sale
                  of the Products, and (b) relating to the intellectual
                  property identified in paragraph (iii) below (except,
                  in the case of (a) and (b), real property, plant and
                  equipment located in Worcester, Massachusetts and real
                  property located in Rockville, Maryland except to the
                  extent a leasehold interest therein is to be conveyed
                  to CBC, and

                  (iii)  all CBC's patents, patent applications,
                  licenses, cross-licenses, and other intellectual
                  property, including, without limitation, trade secrets
                  and know-how, in the retroviral area, in respect of
                  HTLV-I and -II, and in respect of the Products
                  (excluding the License Agreement with Stanford
                  University dated August 1, 1988 (Cohen-Boyer
                  portfolio), and the Licnse Agreement with Genentech,
                  Inc. dated December 31, 1989 (methods of recombinant
                  production)), and certain intellectual property in
                  respect of hepatitis antigens from ADI, capillus patent
                  portfolio (subject to the provisions of Section 6.16(d)
                  hereof and Lyme Western Blots.

                                      - 7 -




                                     EXHIBIT E

                 SUMMARY OF RETROVIRAL BUSINESS PURCHASE AGREEMENT


        Pursuant to the Retroviral Business Purchase Agreement, bioMerieux
        has agreed to purchase from Aquila all of the outstanding stock of
        CBC for $6,500,000.  At closing, Reorganized CBC's assets will
        consist principally of CBC's retroviral intellectual property and
        CBC's manufacturing operations in Rockville, Maryland.
        ("Reorganized CBC" means CBC after acquisition thereof by
        bioMerieux).

             In summary, the transaction is as follows:

             Price:              $6,500,000 cash, paid to Aquila at
                                 closing, in consideration of all of the
                                 outstanding stock in CBC.

             Lease:              bioMerieux will lease from Aquila
                                 approximately 40,300 square feet of
                                 manufacturing and laboratory space
                                 located in Rockville, Maryland.  The
                                 lease term is ten years with an
                                 opportunity to extend thereafter at fair
                                 market value.  The per foot rental rate,
                                 triple net, is $11.50 for the first three
                                 years, $12.50 for the next four years,
                                 and $13.50 for the last three years.
                                 bioMerieux also has an option to purchase
                                 Aquila's Rockville, Maryland real estate
                                 at fair market value.

             Principal Assets:   The assets of the retroviral business at
                                 the time of sale are set forth in detail
                                 in Exhibit D to the Plan.  In summary,
                                 the principal assets are as follows:

             Products Manufactured in Rockville:  CBC manufactures in
             Rockville the following FDA-licensed products: HIV-1 Western
             Blot and HTLV-I (rp21e-enhanced) EIA.  In addition, CBC has
             product license applications pending with the FDA for Western
             blots for HIV-2 and HTLV-I and an amendment to its HIV-1
             Western Blot license to permit use of urine samples.  CBC has
             recently completed development of two Western blot products
             for the diagnosis of Lyme disease.  Under bioMerieux
             ownership, Reorganized CBC is expected to continue to
             commercialize these products and is leasing the necessary
             facilities in Rockville, including viral lysate manufacturing
             laboratories and manufacturing suites for the EIA and Western
             blot products.<PAGE>




             Products Manufactured in Worcester:  CBC manufactures in
             Worcester the following FDA-licensed products: Recombigen
             HIV-1 EIA and Syva MicroTrak HIV-1 EIA.  In addition, CBC has
             product license applications pending with the FDA for
             Recombigen HIV-1/2 EIA and Syva MicroTrak HIV-1/2 EIA.  After
             bioMerieux acquires the stock of CBC, ownership of the
             intellectual property necessary for these assets will remain
             with Reorganized CBC, but the equipment and manufacturing
             assets used for production of these products in Worcester
             will remain with Aquila.  Under contract between Reorganized
             CBC and Aquila, Aquila will continue to manufacture some of
             these products for existing CBC customers for a limited time.
             CBC manufactures its recombinant diagnostic antigens in
             Worcester.  After bioMerieux acquires the CBC stock, Aquila,
             as operator of the Worcester facility will supply one of
             these antigens in bulk to Reorganized CBC during 1996.

             Intellectual Property:  By purchasing all of the outstanding
             stock of CBC, bioMerieux will acquire all of CBC's diagnostic
             intellectual property relating to retroviruses.  This
             includes, among other things, CBC's patented CBre3 antigen
             for detection of HIV-1; exclusive licenses from Harvard
             University relating to HIV-1 and HTLV-I; licenses from Sanofi
             Diagnostic Pasteur relating to HIV-1 and HIV-2; licenses from
             the National Institutes of Health relating to HIV-1 and HTLV-
             I; a license from the Centers for Disease Control relating to
             HIV-2; and a license from Hugh Cottingham relating to rapid
             testing by latex agglutination.  Reorganized CBC will also
             continue to hold relevant seed stocks, clones, and
             manufacturing documentation.

             Business Relationships:  Reorganized CBC will assume rights
             and obligations under various supply and distribution
             agreements.  At present, it is expected these will include
             arrangements with Ortho Diagnostic Systems.

             Excluded Assets:  Excluded from the purchase is CBC's
             enterics diagnostics business, its Lyme disease EIA test, any
             assets included in the biopharmaceutical business, and any
             assets physically located in CBC's Worcester facility.

             As part of the Chapter 11 reorganization process, bioMerieux
             will acquire CBC free of all pre-existing liabilities except
             certain liabilities which bioMerieux has agreed to assume and
             certain other potential liabilities with respect to which
             Aquila has agreed to indemnify bioMerieux.

        Aquila will have certain ongoing support obligations to
        Reorganized CBC.  Aquila also will supply Reorganized CBC with
        certain proteins up to the end of 1996.  Aquila also will provide
        certain management information systems support services.




                                     EXHIBIT F

                          AQUILA BIOPHARMACEUTICALS, INC.
                              a Delaware corporation


                                        and


                         THE FIRST NATIONAL BANK OF BOSTON



                           RIGHTS AND WARRANTS AGREEMENT




                                 TABLE OF CONTENTS
        ARTICLE I - RIGHTS AGENT 
        1.1. Appointment as Rights Agent   
        1.2. Form of Rights Certificates   
        1.3. Issuance of Rights Certificates    
        1.4. Exercise of Rights  
        1.5 Oversubscription Procedures    
        1.6 Rules Applicable to Exercise   
        1.7. Subdivision and Transfer of Rights 
        1.8. Mutilated or Missing Rights Certificates     
        1.9. Information Provided to the Company     
        ARTICLE II - ESCROW 
        2.1. Establishment of Escrow Account    
        2.2. Escrow Period  
        2.3. Collection Procedure     
        2.4.  Cancellation of Rights Offering; Return of Funds 
        ARTICLE III - WARRANT AGENT   
        3.1. Appointment As Warrant Agent  
        3.2. Form of Warrant     
        3.3. Issuance of Warrants; Registration 
        3.4. Exercise of Warrants     
        3.5. Transfers and Exchanges  
        3.6. Mutilated or Missing Warrants 
        3.7. Payment of Taxes    
        3.8. Reservation of Common Stock   
        3.9. Warrant Exercise Price Adjustments 
        3.10.  Fractional Interest    
        3.11.  Notices to Warrantholders   
        3.12. Redemption of Warrants  
        3.13. Disposition of Proceeds on Exercise of Warrants  
        ARTICLE IV - MISCELLANEOUS    
        4.1. Definitions    
        4.2. Duties of FNBB 
        4.3. Merger or Consolidation or Change of Name of FNBB 
        4.4. Change of Warrant Agent  
        4.5. Identity of Transfer Agent    
        4.6. Legal Counsel  
        4.7. Compensation for Services     
        4.8. Notices   
        4.9. Supplements and Amendments    
        4.10. Governing Law 
        4.11. Benefits of this Agreement   
        4.12. Successors    <PAGE>




                           RIGHTS AND WARRANTS AGREEMENT

             RIGHTS AND WARRANTS AGREEMENT ("Agreement") dated as of
        July 29, 1996, by and between AQUILA BIOPHARMACEUTICALS, INC., a
        Delaware corporation (the "Company"), and THE FIRST NATIONAL BANK
        OF BOSTON, a national bank, (referred to herein, variously, as
        "FNBB," the "Rights Agent," and the "Warrants Agent" as the
        circumstances require).  (Certain capitalized terms used herein
        are defined in Section 4.1)

                               W I T N E S S E T H:

             WHEREAS, the Company intends to issue up to a maximum of
        5,000,000 rights (the "Rights") to its holders of Claims and
        Interests who receive Common Stock pursuant to the confirmed Plan
        of Reorganization in Case 94-43054-JFQ in the United States
        Bankruptcy Court for the District of Massachusetts (the "Plan")
        entitling them to purchase a Unit consisting of one share of its
        Common Stock, and one warrant to purchase a share of common stock
        (a "Warrant"), for each share of Common Stock held of record on
        the Consummation Date (the "Rights Offering"); and

             WHEREAS, the Company desires that FNBB act on behalf of the
        Company, and FNBB is willing to so act, in various capacities
        herein described in connection with the Rights Offering; and

             NOW THEREFORE, for good and valuable consideration, receipt
        and sufficiency of which are hereby acknowledged, the parties
        hereto agree as follows:


                             ARTICLE I - RIGHTS AGENT

             1.1. Appointment as Rights Agent.  The Company hereby
        appoints FNBB to act as Rights Agent in connection with the Rights
        Offering, and FNBB hereby accepts such appointment.

             1.2. Form of Rights Certificates.  The Rights Certificates
        shall be substantially in the form annexed hereto as Exhibit A
        (the provisions of which are hereby incorporated herein).  The
        Rights Certificates shall be dated the date of issuance thereof
        (whether upon initial issuance, transfer, exchange or in lieu of
        mutilated, lost, stolen or destroyed Rights Certificates).

             1.3. Issuance of Rights Certificates.

             (a)  Upon written order of or on behalf of the Company, on
        the Initial Distribution Date the Rights Agent shall mail or
        deliver Rights Certificates to those persons entitled to receive
        Common Stock pursuant to the Plan.  During the Rights Exercise
        Period, the Rights Agent shall issue Rights Certificates in whole
        number denominations to the person entitled thereto in connection
        with any partial exercise, transfer or exchange permitted under<PAGE>




        this Agreement to the extent there is sufficient time to do so
        prior to the end of the Rights Exercise Period.

             (b)  The Rights Agent shall keep a register of the registered
        holders reflecting the ownership of all Rights Certificates and
        the transfer and exchange thereof.  Except as provided in this
        Agreement, no Rights Certificates shall be issued during the
        Rights Exercise Period, except (i) Rights Certificates initially
        issued hereunder, (ii) Rights Certificates issued, upon the
        exercise of any Rights, to evidence unexercised Rights held by the
        exercising registered holder and (iii) Rights Certificates issued
        upon any transfer or exchange of Rights, or in lieu of mutilated,
        lost, stolen or destroyed Rights Certificates.  No Rights
        Certificates shall be issued after the Right Exercise Period.

             (c)  All Rights Certificates surrendered to the Rights Agent
        shall be promptly cancelled by the Rights Agent and thereafter
        retained by it for one year, and then shall be delivered to the
        Company.

             1.4. Exercise of Rights.  

             (a)  The Rights represented by Rights Certificates  may be
        exercised at any time on or after the Initial Distribution Date,
        but not after 5:00 p.m., Eastern Time on the last day of the
        Rights Exercise Period,  upon the terms and subject to the
        conditions set forth herein, in the Plan and in the Rights
        Certificates.  Payment must be made in cash or by check, bank
        certified or bank check or wire transfer payable to the order of
        "First National Bank of Boston" in an amount of lawful money of
        the United States of America equal to the Rights Exercise Price of
        the Rights exercised.

              (b) A Rights Certificate shall be deemed to have been
        properly exercised if before the end of the Rights Exercise Period
        a properly completed and signed Rights Certificate has been
        deposited with a bank, trust company, or member firm of the New
        York Stock Exchange, American Stock Exchange or National
        Association of Securities Dealers, Inc., and the Rights Agent has
        received a notice, by mail, telegraph or telefax from such bank,
        trust company or member firm that:  (i) sets forth the name of the
        holder of the Rights Certificate(s), the serial number(s) of the
        Rights Certificate(s) being exercised, and the number of Units
        represented by the Rights Certificate to be purchased, (ii)
        specifies the number of Units, if any, for which Oversubscription
        Rights are exercised, (iii) guarantees payment of the full Rights
        Exercise Price for all Units subscribed, including the
        Oversubscription Units, and (iv) states that the Rights
        Certificate has been properly completed and signed and has been or
        will be promptly forwarded to the Rights Agent by such bank, trust
        company, or member firm.  Rights exercised in this manner will be
        included in the Rights Offering only if the properly completed
        Rights Certificate(s) and full payment are received within three
        Business Days after the Rights Expiration Date.

                                       - 2 -<PAGE>




             (c)  The Rights Agent will date and time stamp, upon receipt,
        all documents received by it as Rights Agent.  The Rights Agent
        shall examine the Rights Certificates and other documents
        delivered or mailed to the Rights Agent by or for shareholders of
        the Company to ascertain whether (i) the Rights Certificates are
        properly completed and duly executed in accordance with the
        instructions set forth herein, (ii) the proper payment accompanies
        the Rights Certificates, (iii) any other necessary documents are
        properly completed and duly executed.  The Rights Agent need not
        pass on the legal sufficiency of any signature or verify any
        signature guarantee.    The Rights Agent is authorized, upon
        consultation with the Company or one or more of its
        representatives, to request from any person exercising Rights such
        additional undertakings as the Rights Agent may deem appropriate.
        The Rights Agent is not authorized to accept any alternative,
        conditional or contingent purchase, or any purchase of fractional
        Units.

             (d)  Once a registered holder of Rights has delivered or
        mailed a completed Rights Certificate, the exercise of the Rights
        represented thereby is not revocable for any reason.

             1.5. Oversubscription Procedures

             (a)  If less than all Units are subscribed for through
        exercise of the Rights represented by the Rights Certificates, the
        Rights Agent shall allocate the unsubscribed Units among those
        Eligible Rights Holders who in the exercise of their Rights
        elected to purchase additional Units by completing the
        Oversubscription election. Within five Business Days after
        expiration of the Rights Exercise Period, the Rights Agent shall
        notify those Eligible Rights Holders who exercised
        Oversubscription Rights of the additional number of Units
        allocated to them.  All such subscribers shall have until 5:00
        p.m. Eastern Time on the tenth Business Day after expiration of
        the Rights Exercise Period to make full payment of the
        subscription price for each Unit subscribed for pursuant to the
        Oversubscription Rights in the same manner as for Rights
        represented by the Rights Certificate under Section 1.4(b) hereof.  

             (b)  Only an Eligible Rights Holder shall be eligible to
        exercise Oversubscription Rights.

             (c)  If the aggregate number of Units subscribed for through
        the exercise of Oversubscription Rights is more than the number of
        Units available for purchase, the available Units will be
        apportioned among the Eligible Rights Holders who exercised the
        Oversubscription Rights in proportion to the number of basic
        Rights originally issued by the Company to, and exercised by, each
        through repeated application of the proration procedure described
        in the next paragraph.  Each time the procedure is applied, the
        "Number of Available Units" shall mean the number of Units not
        apportioned by prior applications of the procedures described
        therein.

                                       - 3 -<PAGE>




             (d)  The Number of Available Units shall be apportioned among
        all those Eligible Rights Holders who have not yet been
        apportioned (through previous applications of this procedure) the
        full number of Units subscribed for by them in their respective
        exercises of Oversubscription Rights.  Apportionment among them
        shall be based on the ratio of the number of basic Rights
        originally issued by the Company to, and exercised by, each;
        provided however, that if the number of Units so apportioned to
        any Eligible Rights Holder exceeds the number of Units subscribed
        for by that Eligible Rights Holder's exercise of Oversubscription
        Rights, then the excess shall not be apportioned, and that
        Eligible Rights Holder shall thereafter not be apportioned any
        additional Units should there be further applications of this
        procedure.  This procedure shall be repeated until either (i) the
        Number of Available Units is zero, or (ii) a sufficient number of
        Units has been apportioned to all Eligible Rights Holders to
        satisfy all of their exercised Oversubscription Rights, whichever
        occurs first.

             (e)  Notwithstanding the preceding proration procedures, in
        no event shall any Eligible Rights Holder be able to purchase
        through the exercise of Oversubscription Rights a number of Units
        greater than the number which would result in that person owning
        of record a number of shares of Common Stock equal to fifteen
        percent (15%) of the total of (i) the number of shares of Common
        Stock outstanding on the last day of the Rights Exercise Period,
        plus (ii) the shares included in the Units purchased in the Rights
        Offering (but before taking into account shares issuable upon
        exercise of the Warrants), plus (iii) the number of shares
        reserved for issuance under options which are outstanding as of
        the last day of the Rights Exercise Period, unless the limitation
        is waived by Aquila.  Any Eligible Rights Holder whose
        subscription would otherwise cause it to exceed the fifteen
        percent (15%) limitation shall have its subscription treated as
        having been for a number sufficient only to bring it to fifteen
        percent (15%).

             1.6  Rules Applicable to Exercise

             (a)  The Rights Agent shall direct the Transfer Agent to
        issue certificates for the Shares and Warrants purchased in the
        Rights Offering not later than the Closing Date specified in
        Section 2.3, provided that the Rights Agent shall have previously
        received good funds in the amount of the Rights Exercise Price
        therefor.  No Rights holder, as such, shall be a shareholder with
        respect to such Shares and no such Shares shall be deemed to be
        outstanding until such Shares are issued in accordance herewith.

             (b)  The Company shall not issue any fractional Rights nor
        any fractional Units upon exercise of a Rights Certificate.  In
        the event that payment is submitted in an amount less than the
        Rights Exercise Price for the Rights intended to be exercised,
        only the number of whole Units for which payment was received will
        be issued.  If a holder of Rights exercises for fewer than all of

                                       - 4 -<PAGE>




        the Units to which his Rights Certificate applies, the Rights
        Agent shall issue a new Rights Certificate representing the
        balance of the unsubscribed Rights, to the extent that there is
        sufficient time to do so prior to the expiration of the applicable
        Rights Exercise Date.

             (c)  The Company shall pay all federal and state transfer
        taxes required to be paid on the issuance of Rights or of Units,
        Common Stock or Warrants upon exercise of Rights.

             (d)  The Rights Agent shall promptly notify the Company of
        any irregularities in any documents related to exercise of Rights
        received by the Rights Agent.  All questions as to the validity,
        form, eligibility (including times of receipt and matters
        pertaining to the beneficial ownership) and the acceptance of
        subscriptions and payment of the Rights Exercise Price will be
        determined by the Company, which determinations will be final and
        binding.  No alternative, conditional or contingent exercises of
        Rights will be accepted.  The Company reserves the absolute right
        to reject any or all exercises of Rights not properly submitted or
        the acceptance of which would, in the opinion of the Company's
        counsel, be unlawful.  The Company also reserves the right to
        waive any irregularities or conditions, and the Company's
        interpretations of the terms and conditions of the Rights Offering
        shall be final and binding.  Any irregularities in connection with
        exercises of Rights must be cured within such time as the Company
        shall determine, unless waived.  Rights will not be deemed to have
        been exercised until such irregularities have been cured or
        waived.  Rights Certificates received by the Rights Agent that are
        not properly submitted and as to which the irregularities have not
        been cured or waived shall be returned by the Rights Agent to the
        appropriate holder of the Rights, to the extent there is
        sufficient time to do so prior to the expiration of the applicable
        Rights Exercise Period; and funds submitted with such Rights
        Certificates shall be returned without interest by the Rights
        Agent to such holder.

             (e)  The Rights Agent will follow and act upon any
        amendments, modifications or supplements to these instructions,
        and upon any further information in connection with the terms of
        the Rights Offering, any of which may be given to the Rights Agent
        by the Company or by its legal counsel, including instructions
        with respect to (i) any extension or other modifications of the
        Rights Offering, (ii) the amount or manner of payment for any
        Units purchased, and (iii) the cancellation of the Rights
        Offering.

             (f)  If the Company determines to reduce the Rights Exercise
        Price as permitted by the Plan, to the extent practicable and
        permissable under applicable rules, including those of the
        Depository Trust Company, the Rights Agent shall recalculate the
        number of Units purchasable at the reduced price with subscription
        monies received on Rights already exercised and shall issue any
        resulting additional share certificates or Warrants in accordance

                                       - 5 -<PAGE>




        with the terms hereof; otherwise it will return the extra funds
        without interest to the exercising Rights Holder.

             1.7. Subdivision and Transfer of Rights.  

             (a)  Subject to any provisions to the contrary contained in
        this Agreement, Rights Certificates may be subdivided into other
        Rights Certificates representing an equal aggregate number of
        Rights.  Rights Certificates to be subdivided shall be surrendered
        to the Rights Agent, and the Rights Agent shall deliver in
        exchange therefor in denominations of 100 Rights (or multiples
        thereof), as requested by the registered holder thereof, Rights
        Certificates representing the Rights which the registered holder
        making the exchange shall be entitled to receive; provided,
        however, that the Rights Agent may issue, in response to requests
        for subdivision, two but not more than two Rights Certificates of
        a denomination that is not a multiple of 100.

             (b)  Rights may be transferred in whole by endorsing the
        Rights Certificate for transfer.  Rights may be transferred in
        part by delivering to the Rights Agent a Rights Certificate which
        has been properly endorsed for transfer, with instructions to
        reissue the Rights in part in the name of the transferee and
        reissue the balance to the registered holder thereof or an
        additional transferee.  The Rights Certificate must be received by
        the Rights Agent by the close of business on the second Business
        Day prior to the expiration of the applicable Rights Exercise
        Period for a Rights Certificate to be reissued upon transfer or
        subdivision.

             (c)  Prior to due presentment for registration of transfer
        thereof, the Company and the Rights Agent may deem and treat the
        registered holder of any Rights Certificate as the absolute owner
        thereof and of each Right represented thereby (notwithstanding any
        notation of ownership or writing thereon made by anyone other than
        the Company or the Rights Agent) for all purposes and shall not be
        affected by any notice to the contrary.

             1.8. Mutilated or Missing Rights Certificates.  In case any
        of the Rights Certificates shall be mutilated, lost, stolen or
        destroyed, the Company may, in its discretion, issue and the
        Rights Agent shall countersign and deliver in exchange and
        substitution for and upon cancellation of the mutilated Rights
        Certificate, or in lieu of and in substitution for the Rights
        Certificate lost, stolen or destroyed, a new Rights Certificate of
        like tenor and representing an equivalent right or interest, but
        only upon receipt of evidence satisfactory to the Company and the
        Rights Agent of such loss, theft or destruction and, in case of a
        lost, stolen or destroyed Rights Certificate, indemnity, if
        requested, also satisfactory to them.  Applicants for such
        substitute Rights Certificates shall also comply with such other
        reasonable regulations and pay such reasonable charges as the
        Company or the Rights Agent may prescribe.


                                       - 6 -<PAGE>




             1.9. Information Provided to the Company.  

             (a)  The Rights Agent will record and hold all Rights
        Certificates received by it and promptly notify the Company by
        facsimile after the close of business on each Business Day as to
        the total number of Units covered by Rights exercised on such day
        and the cumulative number of Units exercised and funds received
        through the time of such call.  The Company's facsimile number for
        such reports is 508-751-5585.

             (b)  In addition, the Rights Agent will also provide, and
        will cooperate in making available to the Company, upon oral
        request made from time to time, such other information as the
        Company may reasonably request.


                                ARTICLE II - ESCROW

             2.1. Establishment of Escrow Account.  On or prior to the
        date of commencement of the Rights Offering, the Company shall
        establish an interest-bearing escrow account with State Street
        Bank & Trust Company, as  Escrow Agent, which escrow account shall
        be entitled "Aquila Biopharmaceuticals, Inc. Rights Offering
        Escrow Account" (the "Escrow Account").  Subscribers in the Rights
        Offering shall be directed to make checks for subscriptions
        payable to the order of the Rights Agent.

             2.2. Escrow Period.  The period during which funds shall
        remain in escrow (the "Escrow Period") with respect to the Rights
        Exercise Period shall begin with the commencement of the Rights
        Offering and shall terminate upon the earlier to occur of the
        following dates:

             (a)  The date which shall not be later than ten Business Days
        after (i) the last day of the Rights Exercise Period, or (ii) the
        later expiration of the Oversubscription Period in Section 1.5
        above, on which the Rights Agent directs the Transfer Agent to
        issue the certificates for shares and Warrants purchased under
        Sections 1.4 and 1.5 hereof and release the purchase price for
        such certificates to the Company ("Closing Date"); or

             (b)  The date upon which the Rights Offering is cancelled.

             During the Escrow Period, the Company shall not be entitled
        to any funds received into escrow and no amounts deposited in the
        Escrow Account shall become the property of the Company or any
        other entity, or be subject to the debts of the Company or any
        other entity.

             2.3. Collection Procedure.  If the Rights Agent rejects any
        Rights exercise (including any Oversubscription) for which the
        Escrow Agent has already collected funds, the Escrow Agent shall
        promptly issue a refund check to the rejected subscriber.  If the
        Rights Agent rejects any Rights exercise for which the Escrow

                                       - 7 -<PAGE>




        Agent has not yet collected funds but has submitted the
        subscriber's check for collection, the Escrow Agent shall promptly
        issue a check in the amount of the subscriber's check to the
        rejected subscriber after the Escrow Agent has cleared such funds.
        If the Escrow Agent has not yet submitted a rejected subscriber's
        check for collection, the Escrow Agent shall promptly remit the
        subscriber's check directly to the subscriber.

             2.4.  Cancellation of Rights Offering; Return of Funds.  In
        the event the Rights Offering is withdrawn for any reason, upon
        the Company's direction, the Rights Agent shall direct the Escrow
        Agent to refund to each subscriber the amount received from the
        subscriber.


                            ARTICLE III - WARRANT AGENT

             3.1. Appointment As Warrant Agent.  The Company hereby
        appoints the FNBB to act as Warrant Agent for the Company in
        accordance with the instructions hereinafter set forth, and FNBB
        hereby accepts such appointment.

             3.2. Form of Warrant.  

             (a)  The text of the Warrants and of the form of election to
        purchase Common Stock to be printed on the reverse thereof shall
        be substantially as set forth in Exhibit B attached hereto.  

             3.3. Issuance of Warrants; Registration.

             (a)  Warrants shall be dated as of the date of issuance by
        the Warrant Agent, either upon initial issuance or upon transfer
        or exchange.  The Warrants shall be executed on behalf of the
        Company by the manual or facsimile signature of the present
        Chairman of the Board or Vice Chairman of the Board or any future
        President or Vice President of the Company, attested to by the
        manual or facsimile signature of the present or any future
        Secretary or Assistant Secretary of the Company.

             (b)  The Warrant Agent shall maintain books for the transfer
        and registration of Warrants.  Upon the initial issuance of the
        Warrants, the Warrant Agent shall issue and register the Warrants
        in the names of the respective holders thereof.  The Warrants
        shall be countersigned manually or by facsimile by the Warrant
        Agent (or by any successor to the Warrant Agent then acting as
        warrant agent under this Agreement) and shall not be valid for any
        purpose unless so countersigned. Warrants may, however, be so
        countersigned by the Warrant Agent (or by its successor as Warrant
        Agent) and be delivered by the Warrant Agent, notwithstanding that
        the persons whose manual or facsimile signatures appear thereon as
        proper officers of the Company shall have ceased to be such
        officers at the time of such countersignature or delivery.

             3.4. Exercise of Warrants.

                                       - 8 -<PAGE>




             (a)  Subject to the provisions of this Agreement, each
        registered holder of Warrants shall have the right, which may be
        exercised commencing on the date of issuance and continuing until
        the Warrant Expiration Date, to purchase from the Company (and the
        Company shall issue and sell to such registered holder of
        Warrants) the number of fully paid and non-assessable shares of
        Common Stock specified in such Warrants upon surrender of such
        Warrants to the Company at the office of the Warrant Agent, with
        the form of election to purchase on the reverse thereof duly
        filled in and signed, and upon payment to the Company of the
        Warrant Exercise Price for the number of shares of Common Stock in
        respect of which such Warrants are then exercised.   Payment of
        the Warrant Exercise Price shall be made in cash or by certified
        check or bank draft to the order of the Company.  

             (b)  Subject to Section 3.7 and any applicable Federal or
        state securities law restrictions, upon surrender of Warrants and
        payment of the Warrant Exercise Price, the Company shall issue and
        cause to be delivered with all reasonable dispatch to or upon the
        written order of the registered holder of such Warrants and in
        such name or names as such registered holder may designate, a
        certificate or certificates for the number of full shares of
        Common Stock so purchased upon the exercise of such Warrants.
        Such certificate or certificates shall be deemed to have been
        issued and any person so designated to be named therein shall be
        deemed to have become a holder of record of such shares of Common
        Stock as of the date of the surrender of such Warrants and payment
        of the Warrant Exercise Price as aforesaid. 

             (c)  The rights of purchase represented by the Warrants shall
        be exercisable, at the election of the registered holders thereof,
        either as an entirety or from time to time for a portion of the
        shares of Common Stock specified therein and, in the event that
        any Warrant is exercised in respect of less than all of the shares
        of Common Stock specified therein at any time prior to the Warrant
        Expiration Date, a new Warrant or Warrants will be issued to the
        registered holder for the remaining number of shares of Common
        Stock specified in the Warrant so surrendered, and the Warrant
        Agent is hereby irrevocably authorized to countersign and to
        deliver the required new Warrants pursuant to the provisions of
        this Section and of Section 3.3 of this Agreement and the Company,
        whenever requested by the Warrant Agent, will supply the Warrant
        Agent with Warrants duly executed on behalf of the Company for
        such purpose.

             3.5. Transfers and Exchanges.  The Warrant Agent shall
        transfer on and after the Closing Date any outstanding Warrants
        upon the books to be maintained by the Warrant Agent for that
        purpose, upon surrender thereof for transfer properly endorsed or
        accompanied by appropriate instructions for transfer.  Upon any
        such transfer, a new Warrant shall be issued to the transferee and
        the surrendered Warrant shall be cancelled by the Warrant Agent.
        Warrants so cancelled shall be delivered by the Warrant Agent to
        the Company from time to time upon request.  Warrants may be

                                       - 9 -<PAGE>




        exchanged at the option of the holder thereof, when surrendered at
        the office of the Warrant Agent, for another Warrant, or other
        Warrants of different denominations of like tenor and representing
        in the aggregate the right to purchase a like number of shares of
        Common Stock.

             3.6. Mutilated or Missing Warrants.  In case any of the
        Warrants shall be mutilated, lost, stolen or destroyed, the
        Company may, in its discretion, issue and the Warrant Agent shall
        countersign and deliver in exchange and substitution for and upon
        cancellation of the mutilated Warrant, or in lieu of and in
        substitution for the Warrant lost, stolen or destroyed, a new
        Warrant of like tenor and representing an equivalent right or
        interest, but only upon receipt of evidence satisfactory to the
        Company and the Warrant Agent of such loss, theft or destruction
        and, in case of a lost, stolen or destroyed Warrant, indemnity, if
        requested, also satisfactory to them.  Applicants for such
        substitute Warrants shall also comply with such other reasonable
        regulations and pay such reasonable charges as the Company or the
        Warrant Agent may prescribe.

             3.7. Payment of Taxes.  The Company will pay any documentary
        stamp taxes attributable to the initial issuance of Common Stock
        issuable upon the exercise of Warrants; provided, however, that
        the Company shall not be required to pay any tax which may be
        payable in respect of any transfer involved in the issue or
        delivery of any certificates of shares of Common Stock in a name
        other than that of the registered holder of Warrants in respect of
        which such shares are issued, and in such case, neither the
        Company nor the Warrant Agent shall be required to issue or
        deliver any certificate for shares of Common Stock or any Warrant
        until the person requesting the same has paid to the Company the
        amount of such tax or has established to the Company's
        satisfaction that such tax has been paid.

             3.8. Reservation of Common Stock.  There have been reserved,
        and the Company shall at all times keep reserved, out of the
        authorized and unissued shares of Common Stock, a number of shares
        of Common Stock sufficient to provide for the exercise of the
        rights of purchase represented by the Warrants, and the transfer
        agent for the shares of Common Stock and every subsequent transfer
        agent for any shares of the Company's Common Stock issuable upon
        the exercise of the Warrants are irrevocably authorized and
        directed at all times to reserve such number of authorized and
        unissued shares of Common Stock as shall be required for such
        purpose.  The Company agrees that all shares of Common Stock
        issued upon exercise of the Warrants shall be, at the time of
        delivery of the certificates for such shares, validly issued and
        outstanding, fully paid and nonassessable and shall be listed on
        any national securities exchange or automated stock trading system
        upon which the other shares of Common Stock are then listed.  The
        Company will keep a copy of this Agreement on file with the
        transfer agent for the shares of Common Stock and with every
        subsequent transfer agent for any shares of the Company's Common

                                      - 10 -<PAGE>




        Stock issuable upon the exercise of the rights of purchase
        represented by the Warrants.  The Warrant Agent is irrevocably
        authorized to requisition from time to time from such transfer
        agent stock certificates required to honor outstanding Warrants.
        The Company will supply such transfer agent with duly executed
        stock certificates for that purpose.  All Warrants surrendered in
        the exercise of the rights thereby evidenced shall be cancelled by
        the Warrant Agent and shall thereafter be delivered to the
        Company, and such cancelled Warrants shall constitute sufficient
        evidence of the number of shares of Common Stock which have been
        issued upon the exercise of such Warrants.  Promptly after the
        Warrant Expiration Date, the Warrant Agent shall certify to the
        Company the total aggregate amount of Warrants then outstanding,
        and thereafter no shares of Common Stock shall be subject to
        reservation in respect of such Warrants which shall have expired.

             3.9. Warrant Exercise Price Adjustments.

                  (a)  Price Adjustment.  The Warrant Exercise Price shall
        be subject to adjustment from time to time as follows:

                       (i)  In case the Company shall at any time after
        the date hereof pay a dividend in shares of Common Stock or make a
        distribution in shares of Common Stock, then upon such dividend or
        distribution the Warrant Exercise Price in effect immediately
        prior to such dividend or distribution shall forthwith be reduced
        to a price determined by dividing:

                            (A)  an amount equal to the total number of
        shares of Common Stock outstanding immediately prior to such
        dividend or distribution multiplied by the Warrant Exercise Price
        in effect immediately prior to such dividend or distribution, by

                            (B)  the total number of shares of Common
        Stock outstanding immediately after such issuance or sale.  

             For the purposes of any computation to be made in accordance
        with the provisions of this clause (i), Common Stock issuable by
        way of dividend or other distribution on any stock of the Company
        shall be deemed to have been issued immediately after the opening
        of business on the date following the date fixed for the
        determination of stockholders entitled to receive such dividend or
        other distribution.

                       (ii) In case the Company shall at any time
        subdivide or combine the outstanding Common Stock, the Warrant
        Exercise Price shall forthwith be proportionately decreased in the
        case of subdivision or increased in the case of combination to the
        nearest one cent.  Any such adjustment shall become effective at
        the time such subdivision or combination shall become effective.


                  (b)    Share Adjustment.  In the event that the number
        of outstanding shares of Common Stock is increased by a stock

                                      - 11 -<PAGE>




        dividend payable in Common Stock or by a subdivision of the
        outstanding Common Stock, then, from and after the time at which
        the adjusted Warrant Exercise Price becomes effective pursuant to
        paragraph (a) of this Section by reason of such dividend or
        subdivision, the number of shares of Common Stock issuable upon
        the exercise of each Warrant shall be increased in proportion to
        such increase in outstanding shares.   In the event that the
        number of shares of Common Stock outstanding is decreased by a
        combination of the outstanding Common Stock, then, from and after
        the time at which the adjusted Warrant Exercise Price becomes
        effective pursuant to paragraph (a) of this Section by reason of
        such combination, the number of shares of Common Stock issuable
        upon the exercise of each Warrant shall be decreased in proportion
        to such decrease in the outstanding shares of Common Stock.

                  (c)       Reorganization.  In the case of any
        reorganization or reclassification of the outstanding Common Stock
        (other than a change in par value, or from par value to no par
        value, or as a result of a subdivision or combination), or in case
        of any consolidation of the Company with, or merger of the Company
        into, another corporation, or in case of any sale or conveyance to
        another corporation of the property of the Company as an entirety
        or substantially as an entirety, the holder of each Warrant then
        outstanding shall thereafter have the right to purchase the kind
        and amount of shares of Common Stock and other securities and
        property receivable upon such reorganization, reclassification,
        consolidation, merger, sale or conveyance by a holder of the
        number of shares of Common Stock which the holder of such Warrant
        shall then be entitled to purchase; such adjustments shall apply
        with respect to all such changes occurring between the date of
        this Agreement and the date of exercise of such Warrant.  If, at
        any time, as a result of an adjustment made pursuant to this
        paragraph, the holders of a Warrant or Warrants shall become
        entitled to purchase any securities other than shares of Common
        Stock, thereafter the number of such securities so purchasable
        upon exercise of each Warrant and the Warrant Exercise Price for
        such shares shall be subject to adjustment from time to time in a
        manner and on terms as nearly equivalent as practicable to the
        provisions with respect to the Common Stock contained in
        paragraphs (a) and (b).

                  (d)  Calculation of Adjustments.  The following
        provisions shall apply with respect to any adjustments under
        paragraphs (a)-(c) above:

                       (i)  Within a reasonable time after the close of
        each quarterly fiscal period of the Company during which the
        Warrant Exercise Price has been adjusted as provided in paragraph
        (a), the Company shall file with the Warrant Agent a certificate
        signed by the President, Vice President, the Treasurer or
        Assistant Treasurer or the Secretary or an Assistant Secretary of
        the Company, showing in detail the facts requiring all such
        adjustments occurring during such period and the Warrant Exercise
        Price after each such adjustments.

                                      - 12 -<PAGE>




                       (ii) The Company may retain a firm of independent
        public accountants (who may be any such firm regularly employed by
        the Company) to make any computation required under this Section,
        and any certificate setting forth such computation signed by such
        firm shall be conclusive evidence of the correctness of any
        computation made under this Section.

                       (iii)     Notwithstanding anything contained herein
        to the contrary, no adjustment of the Warrant Exercise Price shall
        be made if the amount of such adjustment shall be less than $.10,
        but in such case any adjustment that would otherwise be required
        then to be made shall be carried forward and shall be made at the
        time and together with the next subsequent adjustment which,
        together with any adjustment so carried forward, shall amount to
        not less than $.10.

                       (iv) The Warrant Agent shall have no duty with
        respect to any such certificate filed with it except to keep the
        same on file and available for inspection by holders of Warrants
        during reasonable business hours, and the Warrant Agent may
        conclusively rely upon the latest certificate furnished to it
        hereunder.  The Warrant Agent shall not at any time be under any
        duty or responsibility to any holder of a Warrant to determine
        whether any facts exist which may require any adjustment of the
        Warrant Exercise Price, or with respect to the nature or extent of
        any adjustment of the Warrant Exercise Price when made, or with
        respect to the method employed in making any such adjustment, or
        with respect to the nature or extent of the property or securities
        deliverable hereunder.  In the absence of a certificate having
        been furnished, the Warrant Agent may conclusively rely upon the
        provisions of the Warrants with respect to the Common Stock
        deliverable upon the exercise of the Warrants and the applicable
        Warrant Exercise Price thereof.

                  (e)  Any adjustment pursuant to this Section 3.9 shall
        be made on the basis of the number of shares of Common Stock which
        the holder of the Warrant would have been entitled to acquire by
        the exercise of the Warrant immediately prior to the event giving
        rise to such adjustment.

                  (f)  Irrespective of any adjustments in the Warrant
        Exercise Price or the number or kind of shares purchasable upon
        exercise of the Warrants, Warrants previously or thereafter issued
        may continue to express the same price and number and kind of
        shares as are stated in the similar Warrants initially issuable
        pursuant to this Agreement.

                  (g)  Dissolution. In case of the dissolution,
        liquidation or winding up of the Company, all rights under the
        Warrants shall terminate on a date fixed by the Company, such date
        to be no earlier than ten (10) days prior to the effectiveness of
        such dissolution, liquidation or winding up and not later than
        five (5) days prior to such effectiveness.  Notice of such
        termination of purchase rights shall be given to the last

                                      - 13 -<PAGE>




        registered holder of the Warrants, as the same shall appear on the
        books of the Company maintained by the Warrant Agent, by
        registered mail at least thirty (30) days prior to such
        termination date.

                  (h)  Subscription Offering.  In case the Company shall,
        at any time prior to the expiration of the Warrants and prior to
        the exercise thereof, offer to the holders of its Common Stock any
        rights to subscribe for additional shares of any class of the
        Company (other than the Rights under Article I hereof), then the
        Company shall give written notice thereof to the last registered
        holder of the Warrants not less than ten (10) days prior to the
        date on which the books of the Company are closed or a record date
        is fixed for the determination of the stockholders entitled to
        such subscription rights.  Such notice shall specify the date as
        which the books shall be closed or the record date fixed with
        respect to such offer of subscription and the right of the holder
        of the Warrant to participate in such offer of subscription shall
        terminate if the Warrant shall not be exercised on or before the
        date of such closing of the books or such record date.

             3.10.  Fractional Interest.  The Warrants may only be
        exercised to purchase full shares of Common Stock and the Company
        shall not be required to issue fractions of shares of Common Stock
        on the exercise of Warrants.  However, if a Warrant holder
        exercises all Warrants then owned of record by him and such
        exercise would result in the issuance of a fractional share, the
        Company will pay to such Warrant holder, in lieu of the issuance
        of any fractional share otherwise issuable, an amount of cash
        based on the Daily Market Price on the last trading day prior to
        the Warrant Exercise Date.

             3.11.  Notices to Warrantholders.

             (a)  Upon any adjustment of the Warrant Exercise Price and
        the number of shares of Common Stock issuable upon exercise of a
        Warrant, then and in each such case, the Company shall give
        written notice thereof to the Warrant Agent, which notice shall
        state the Warrant Exercise Price resulting from such adjustment
        and the increase or decrease, if any, in the number of shares
        purchasable at such price upon the exercise of a Warrant, setting
        forth in reasonable detail the method of calculation and the facts
        upon which such calculation is based.  The Company may also mail
        such notice to the holders of the Warrants at their addresses
        appearing in the Warrant register.  Failure to give or mail such
        notice, or any defect therein, shall not affect the validity of
        the adjustments.

             (b)  In case at any time:

                       (i)  the Company shall pay dividends payable in
        stock upon its Common Stock or make any distribution (other than
        regular cash dividends) to the holders of its Common Stock; or


                                      - 14 -<PAGE>




                       (ii) the Company shall offer for subscription pro
        rata to the holders of its Common Stock any additional shares of
        stock of any class or other rights; or

                       (iii)     there shall be any capital reorganization
        or reclassification of the capital stock of the Company, or
        consolidation or merger of the Company with, or sale of
        substantially all of its assets to another corporation; or

                       (iv) there shall be a voluntary or involuntary
        dissolution, liquidation or winding up of the Company;

        then in any one or more of such cases, the Company shall give
        written notice in the manner set forth in Section 3.11(a) of the
        date on which (A) a record shall be taken for such dividend,
        distribution or subscription rights, or (B) such reorganization,
        reclassification, consolidation, merger, sale, dissolution,
        liquidation or winding up shall take place, as the case may be.
        Such notice shall also specify the date as of which the holders of
        Common Stock of record shall participate in such dividend,
        distribution or subscription rights, or shall be entitled to
        exchange their Common Stock for securities or other property
        deliverable upon such reorganization, reclassification,
        consolidation, merger, sale, dissolution, liquidation or winding
        up as the case may be.  Such notice shall be given at least ten
        (10) days prior to the action in question and not less than ten
        (10) days prior to the record date in respect thereof. Failure to
        give such notice, or any defect therein, shall not affect the
        legality or validity of any of the matters set forth in this
        Section 3.11.

             (c)  The Company shall cause copies of all financial
        statements and reports, proxy statements and other documents that
        are sent to its stockholders to be sent by first-class mail,
        postage prepaid, on the date of mailing to such stockholders, to
        each registered holder of Warrants at his address appearing in the
        warrant register as of the record date for the determination of
        the stockholders entitled to such documents.

             3.12.     Redemption of Warrants.

             (a)  The then outstanding Warrants may be redeemed, at the
        option of the Company, at a price of $.10 per Warrant at any time
        prior to Warrant Expiration Date; provided, however, that they may
        not be so redeemed unless the Daily Market Price per share of the
        Common Stock for twenty consecutive Business Days shall have
        equaled or exceeded 150% of the then current Warrant Exercise
        Price as a result of adjustments in the Warrant Exercise Price
        under Section 3.9.  The Daily Market Price of the Common Stock
        shall be determined by the Company as of the end of each Business
        Day (or, if no trading occurred in the Common Stock on such day,
        as of the end of the immediately preceding day in which trading
        occurred) and verified by the Warrant Agent before the Company may
        give notice of redemption.  All outstanding Warrants must be

                                      - 15 -<PAGE>




        redeemed if any are redeemed, and any right to exercise an
        outstanding Warrant shall terminate at 5:00 p.m. (Eastern time) on
        the Business Day immediately preceding the date fixed for
        redemption.  A trading day shall mean a day in which trading of
        securities occurred on the New York Stock Exchange.

             (b)  The Company may exercise its right to redeem the
        Warrants by giving the notice set forth in the following sentence
        by the end of the tenth Business Day after the provisions of
        Section 3.12(a) hereof have been satisfied.  In case the Company
        shall exercise its rights to redeem, it shall give notice to the
        Warrant Agent and the registered holders of the outstanding
        Warrants, by mailing to such registered holders a notice of
        redemption, first class, postage prepaid, at their address as
        shall appear on the records of the Warrant Agent.  Any notice
        mailed in the manner provided herein shall be conclusively
        presumed to have been duly given whether or not the registered
        holder actually receives such notice.

             (c)  The notice of redemption shall specify the redemption
        price, the date fixed for redemption (which shall be not sooner
        than on the thirtieth (30th) Business Day after such notice is
        mailed), the place where the Warrant certificate shall be
        delivered and the redemption price shall be paid, and that the
        right to exercise the Warrant shall terminate at 4:00 p.m.
        (Central time) on the Business Day immediately preceding the date
        fixed for redemption.

             3.13.     Disposition of Proceeds on Exercise of Warrants.

                  (a)  The Warrant Agent shall promptly forward to the
        Company all monies received by the Warrant Agent for the purchase
        of shares of Common Stock through the exercise of such Warrants.

                  (b)  The Warrant Agent shall keep copies of this
        Agreement available for inspection by holders of Warrants during
        normal business hours.


                            ARTICLE IV - MISCELLANEOUS

             4.1. Definitions. 

             (a)  As used herein, the following terms shall have the
        following meanings, unless the context shall otherwise require:

                  "Common Stock" means the Company's Common Stock, $.01
        par value per share.

                  "Closing Date" has the meaning specified on Section 2.3.

                  "Daily Market Price" means (i) if the Common Stock is
        traded in the over-the-counter market and not in the Nasdaq
        National Market nor on any national securities exchange, the

                                      - 16 -<PAGE>




        closing bid price of the Common Stock on the trading day in
        question, as reported by Nasdaq or an equivalent generally
        accepted reporting service, or (ii) if the Common Stock is traded
        in the Nasdaq National Market or on a national securities
        exchange, then the closing sale price of the Common Stock in the
        Nasdaq National Market or on the principal stock exchange on which
        it is listed on the trading day in question, as the case may be.
        For purposes of clause (i) above, if trading in the Common Stock
        is not reported by Nasdaq, the bid price referred to in said
        clause shall be the lowest bid price as reported in the "pink
        sheets" published by National Quotation Bureau, Incorporated or
        the NASD Electronic Bulletin Board.  The closing price referred to
        in clause (ii) above shall be the last reported sale price or, in
        case no such reported sale takes place on such day, the average of
        the reported closing bid and asked prices, in either case in the
        Nasdaq National Market or on the national securities exchange on
        which the Common Stock is then listed.

                  "Initial Distribution Date" means the date on which the
        Rights Certificates were initially issued as provided in the Plan.

                  "Oversubscription Rights" means the right to elect to
        purchase additional Units beyond the number represented by the
        Rights Certificate from among all of the Units not purchased by
        holders of Rights, as provided in Section 1.5.

                  "Plan" means the Plan of Reorganization confirmed by
        order of the Bankruptcy Court for the District of Massachusetts in
        Case No. 94-43054-SFQ.

                  "Rights" means the rights to purchase Units in
        accordance with the terms of the Rights Offering approved by the
        Board of Directors of the Company.

                  "Rights Certificate" means a certificate evidencing
        Rights.

                  "Rights Exercise Period" has the meaning specified in
        the Plan.

                  "Rights Exercise Price" means the price at which Rights
        may be exercised to acquire Units, which price shall be specified
        in the Plan and set forth on the Rights Certificate.

                  "Shares" means shares of Common Stock included within
        the Units.

                  "Unit" means the right to purchase one share of Common
        Stock and one Warrant to purchase a share of Common Stock, as
        described in the Plan.

                  "Warrants" means the common stock purchase warrants
        included in the Units.


                                      - 17 -<PAGE>




                  "Warrant Exercise Date" means the date on which a
        Warrant is surrendered to the Warrant Agent for exercise in
        accordance with the terms hereof.

                  "Warrant Exercise Price" means the price at which Common
        Stock shall be purchasable upon the exercise of the Warrants, as
        specified in the Plan and as set forth in the Warrant Certificate,
        subject to adjustment as provided in Section 3.9.

                  "Warrant Expiration Date" means the date upon which the
        Warrants expire, which date shall be 5:00 p.m., Eastern time on
        the third anniversary of the Initial Distribution Date.  In the
        event the Warrant Expiration Date falls on a Saturday or Sunday,
        or on a legal holiday on which the New York Stock Exchange is
        closed, then the Warrants shall expire at 5:00 p.m. Eastern time
        on the next succeeding Business Day.

             (b)  `Any capitalized term used in this Agreement and not
        defined herein shall have the meaning specified in the Plan.

             4.2. Duties of FNBB.  FNBB, as Rights Agent and Warrant
        Agent, undertakes the duties and obligations imposed by this
        Agreement upon the following terms and conditions, by all of which
        the Company and the holders of Rights and Warrants, by their
        acceptance thereof, shall be bound:

             (a)  The statements of fact and recitals contained herein and
        in the Rights and Warrants shall be taken as statements of the
        Company, and FNBB assumes no responsibility for the correctness of
        any of the same except such as describe FNBB or action taken or to
        be taken by it.  FNBB assumes no responsibility with respect to
        the distribution of the Rights or Warrants except as herein
        expressly provided.

             (b)  FNBB shall not be responsible for any failure of the
        Company to comply with any of the covenants in this Agreement or
        in the Rights or Warrants to be complied with by the Company.

             (c)  FNBB may consult at any time with counsel satisfactory
        to it (who may be counsel for the Company) and shall incur no
        liability or responsibility to the Company or to any holder of any
        Right or Warrant in respect of any action taken, suffered or
        omitted by it hereunder in good faith and in accordance with the
        reasonable opinion or advice of such counsel.

             (d)  FNBB shall incur no liability or responsibility to the
        Company or to any holder of any Right or Warrant for any action
        taken in reliance on any notice, resolution, waiver, consent,
        order, certificate or other instrument believed by it to be
        genuine and to have been signed, sent or presented by the proper
        party or parties.

             (e)  The Company agrees to reimburse FNBB in the execution of
        this Agreement, to reimburse FNBB for all expenses, taxes and

                                      - 18 -<PAGE>




        governmental charges and other charges incurred by FNBB in the
        execution of this Agreement and to indemnify FNBB and save it
        harmless against any and all liabilities, including judgments,
        costs and reasonable counsel fees, for anything done or omitted by
        FNBB in the execution of this Agreement except as a result of
        FNBB's negligence, willful misconduct or bad faith.

             (f)  FNBB, in its capacity as Rights Agent or Warrant Agent
        shall be under no obligation to institute any action, suit or
        legal proceeding or to take any other action likely to involve
        expenses unless the Company or one or more registered holders of
        Rights or Warrants shall furnish it with reasonable security and
        indemnity for any costs and expenses which may be incurred, but
        this provision shall not affect the power of FNBB to take such
        action as it may consider proper, whether with or without any such
        security or indemnity.  All rights of action under this Agreement
        or under any of the Rights or Warrants may be enforced by FNBB
        without the possession of any of the Rights or Warrants or the
        production thereof at any trial or other proceeding, and any such
        action, suit or proceeding instituted by FNBB shall be brought if
        FNBB, in its capacity as Rights Agent or Warrant Agent as the case
        may be, and any recovery of judgment shall be for the ratable
        benefit of he registered holders of the Rights or Warrants, as
        their respective rights and interests may appear.

             (g)  FNBB and any stockholder, director, officer, partner or
        employee of FNBB may buy, sell or deal in any of the Rights or
        Warrants or other securities of the Company or become pecuniarily
        interested in any transaction in which the Company may be
        interested, or contract with or lend money to or otherwise act as
        fully and freely as though it were not FNBB under this Agreement.
        Nothing herein shall preclude FNBB from acting in any other
        capacity for the Company or for any other legal entity.

             (h)  FNBB shall act hereunder solely as agent and its duties
        shall be determined solely by the provisions hereof.

             (i)  FNBB may execute and exercise any of the rights or
        powers hereby vested in it or perform any duty hereunder either
        itself or by or through its attorneys or agents, and it shall not
        be answerable or accountable for any such attorneys or agents or
        for any loss to the Company resulting from such neglect or
        misconduct, provided reasonable care had been exercised in the
        selection and continued retention thereof.

             (j)  Any request, direction, election, order or demand of the
        Company shall be sufficiently evidenced by an instrument signed in
        the name of the Company by its President or a Vice President or
        its Secretary or an Assistant Secretary or its Treasurer or an
        Assistant Treasurer (unless other evidence in respect thereof be
        herein specifically prescribed); and any resolution of the Board
        of Directors may be evidenced to FNBB by a copy thereof certified
        by the Secretary or a  Assistant Secretary of the Company.


                                      - 19 -<PAGE>




             4.3. Merger or Consolidation or Change of Name of FNBB. 

             (a)  Any corporation or company which may succeed to the
        corporate trust business of FNBB by any merger or consolidation or
        otherwise shall be the successor to it as Rights Agent and Warrant
        Agent hereunder without the execution or filing of any paper or
        any further act on the part of any of the parties hereto, provided
        that such corporation would be eligible for appointment as a
        successor Warrant Agent, and Rights Agent under the provisions of
        this Agreement.  In case, at the time such successor shall succeed
        to the agency created by this Agreement, any of the Rights or
        Warrants shall have been countersigned but not delivered, any such
        successor to FNBB may adopt the countersignature of the original
        Warrant Agent and deliver such Warrants or Rights so
        countersigned.

             (b)  In case at any time the name of the Rights Agent or
        Warrant Agent, shall be changed and at such time any of the
        Warrants or Rights shall have been countersigned but not
        delivered, the Warrant Agent or the Rights Agent may adopt the
        countersignature under its prior name and deliver Warrants or
        Rights so countersigned.  In all such cases such Warrants or
        Rights shall have the full force provided in the Warrants and in
        the Agreement.

             4.4. Change of Warrant Agent.  FNBB may resign as Warrant
        Agent and be discharged from its duties under this Agreement by
        giving to the Company notice in writing, and to the holders of the
        Warrants notice by mailing such notice to the holders at their
        addresses appearing on the Warrant register, of such resignation,
        specifying a date when such resignation shall take effect.  FNBB
        may be removed by like notice to FNBB from the Company and the
        like mailing of notice to the holders of the Warrants.  If FNBB
        shall resign or be removed or shall otherwise become incapable of
        acting in any of those capacities, the Company shall appoint a
        successor to the Warrant Agent.  If the Company shall fail to make
        such appointment within a period of thirty (30) days after such
        removal or after it has been notified in writing of such
        resignation or incapacity or after the Company has received such
        notice from a registered holder of a Warrant (who shall, with such
        notice, submit his Warrant for inspection by the Company), then
        the registered holder of any Warrant may apply to any court of
        competent jurisdiction for the appointment of a successor to the
        Warrant Agent.  Any successor Warrant Agent, whether appointed by
        the Company or by such a court, shall be a bank or trust company,
        in good standing, incorporated under federal law or the laws of
        the Commonwealth of Massachusetts.  After appointment, the
        successor Warrant Agent shall be vested with the same powers,
        rights, duties and responsibilities as if it had been originally
        named as Warrant Agent without further act or deed and the former
        Warrant Agent shall deliver and transfer to the successor Warrant
        Agent all cancelled Rights or Warrants, records and property at
        the time held by it hereunder, and execute and deliver any further
        assurance or conveyance necessary for the purpose.  Failure to

                                      - 20 -<PAGE>




        file or mail any notice provided for in this Section, however, or
        any defect therein, shall not affect the validity of the
        resignation or removal of the Warrant Agent or the appointment of
        the successor Warrant Agent, as the case may be.

             4.5. Identity of Transfer Agent.  Forthwith upon the
        appointment of any transfer agent for the shares of Common Stock
        or of any subsequent transfer agent for the shares of Common Stock
        or other shares of the Company's Common Stock issuable upon the
        exercise of the rights of purchase represented by the Rights or
        Warrants, the Company will file with the Rights Agent and Warrant
        Agent a statement setting forth the name and address of such
        transfer agent.

             4.6. Legal Counsel.  FNBB may consult with legal counsel, and
        the opinion of such counsel shall be full and complete
        authorization and protection to FNBB as to an action taken or
        omitted by it in accordance with such opinion.

             4.7. Compensation for Services.  The Company agrees to pay
        FNBB for its services hereunder and reimburse it for its
        reasonable expenses hereunder, all in accordance with the fee
        agreements attached as Exhibit C hereto and made a part hereof by
        this reference.

             4.8. Notices.  Any notice pursuant to this Agreement to be
        given by FNBB, or by the registered holder of any Right or Warrant
        to the Company, shall be sufficiently given if sent by first-class
        mail, postage prepaid, addressed (until another is filed in
        writing by the Company with the Warrant Agent) as follows:

                  Aquila Biopharmaceuticals, Inc.
                  365 Plantation Street
                  Worcester, MA  01605
                  Attn:  General Counsel

        and a copy thereof to:

                  Joseph F. Ryan
                  Brown, Rudnick, Freed & Gesmer
                  One Financial Center
                  Boston, MA  02111

             Any notice pursuant to this Agreement to be given by the
        Company or by the registered holder of any Right or Warrant to the
        Rights Agent or Warrant Agent shall be sufficiently given if sent
        by first-class mail, postage prepaid, addressed (until another
        address is filed in writing by such agent with the Company) as
        follows:

                  The First National Bank of Boston
                  P.O. Box 1889
                  Mail Stop 42-02-53
                  Boston, MA  02105

                                      - 21 -<PAGE>




             4.9. Supplements and Amendments.  The Company and FNBB may
        from time to time supplement or amend this Agreement in order to
        cure any ambiguity or to correct or supplement any provision
        contained herein which may be defective or inconsistent with any
        other provision herein, or to make any other provisions in regard
        to matters or questions arising hereunder which the Company and
        FNBB may deem necessary or desirable and which shall not be
        inconsistent with the provisions of the Rights or Warrants and
        which shall not adversely affect the interest of the holders of
        Rights or Warrants.

             4.10.     Governing Law.  This Agreement shall be deemed to
        be a contract made under the laws of the State of Delaware and
        shall be construed in accordance with the laws of Delaware
        applicable to agreements to be performed wholly within Delaware.

             4.11.     Benefits of this Agreement.  Nothing in this
        Agreement shall be construed to give to any person or corporation
        other than the Company, the Rights Agent or Warrant Agent and the
        registered holders of the Rights or Warrants any legal or
        equitable right, remedy or claim under this Agreement; but this
        Agreement shall be for the sole and exclusive benefit of the
        Company, the Rights Agent, Warrant Agent and the registered
        holders of the Rights or Warrants.

             4.12.     Successors.  All the covenants and provisions of
        this Agreement by or for the benefit of the Company or FNBB shall
        bind and inure to the benefit of their respective successors and
        assigns hereunder.


             IN WITNESS WHEREOF, the parties have entered into this
        Agreement on the date first above written.

                                      AQUILA BIOPHARMACEUTICALS, INC.


                                      By:  ______________________________
                                           Name: 
                                           Title:


                                      THE FIRST NATIONAL BANK OF BOSTON, 
                                      as Rights Agent and Warrant Agent


                                      By:  ______________________________
                                           Name:
                                           Title:






                                      - 22 -<PAGE>




                                     EXHIBITS


        Exhibit A - Form of Rights Certificate

        Exhibit B - Form of Warrant Certificate

        Exhibit C - Fee Agreement















































                                      - 23 -





                                     EXHIBIT A

        THE RIGHTS EVIDENCED HEREBY WILL EXPIRE AT 5:00 P.M., EASTERN
        TIME, ON AUGUST ___, 1996 (UNLESS EXTENDED PRIOR TO THAT DATE) AND
        WILL BE VALUELESS THEREAFTER
                               (See Reverse hereof)

                                RIGHTS CERTIFICATE
                                    Certificate
                                        for

               Units, Each Comprising One Share of Common Stock and
                  a Warrant to Purchase One Share of Common Stock
                                        of

                       AQUILA BIOPHARMACEUTICALS, INC.    
                      Incorporated under the laws of Delaware
        No. ____________                   Certificate for _______ Rights

        THIS CERTIFIES THAT


        or registered assigns, is the registered owner of the number of
        Rights set forth above, each of which entitles the owner to
        subscribe to purchase one Unit of Aquila Biopharmaceuticals, Inc.,
        a Delaware corporation (the "Company") in exchange for each Right
        held.  The price to be paid to exercise each Right is $________.
        ________.  If the number of Rights exercised results in a fraction
        of a cent, the holder should make payment that has been rounded
        downward to the nearest cent.

             Each Unit consists of one share of the Company's Common Stock
        and one Warrant to purchase an additional share of Common Stock
        for $___________.  _______________ during the period from the
        issue date to August ____, 1999.  Certificates representing the
        shares of Common Stock and the Warrants purchased will be issued
        to holders exercising their Rights within ten Business Days after
        the expiration of the Rights Exercise Period or after the later
        expiration of the Oversubscription allotment period, provided full
        payment has been made.

             The Rights are exercisable until 5:00 p.m., Eastern Time, on
        August ____, 1996 unless prior to that date the Company extends
        the Rights Exercise Period to not later than 5:00 p.m., Eastern
        Time on September ____, 1996.  The Rights are only exercisable
        upon the terms specified herein and in the Rights, Warrants and
        Escrow Agreement between the Company and the Rights Agent dated
        July ____, 1996.  The exercise of all of the Rights represented by
        this certificate shall also entitle the holder to exercise
        Oversubscription Rights to purchase Units not purchased by the
        other holders of Rights, as more fully described in the Rights,
        and Warrants Agreement.<PAGE>




             The holder of this Rights Certificate, as such, shall not be
        entitled to vote or receive dividends or be deemed for any purpose
        the holder of the Common Stock, Warrants or of any other
        securities of the Company which may at any time be issuable on the
        exercise hereof, nor shall anything contained herein, be construed
        to confer upon the holder hereof, as such, any of the rights of a
        stockholder of the Company or any right to vote for the election
        of directors or upon any matter submitted to stockholders at any
        meeting of the Company, or to give or withhold consent to any
        corporate action, or, to receive notice of meetings or other
        actions affecting stockholders, or otherwise, until all or a
        portion of the Rights evidenced by this Rights Certificate have
        been exercised and the shares of Common Stock and Warrants have
        been issued.

             This Certificate shall not be valid for any purpose unless
        countersigned by the Rights Agent.

             WITNESS the facsimile seal of the Company and facsimile
        signature of the proper officers thereof.

        DATED:                        AQUILA BIOPHARMACEUTICALS, INC.


        COUNTERSIGNED:                By:
                                                President

        The First National Bank of Boston                           
           as Rights  Agent                     

        By                            
                                      Attest:
        Authorized Signature                    Secretary










        Please mail, deliver cash, check or money order payable to The
        First National Bank of Boston for $_______ for each Unit
        subscribed for pursuant to the exercise of Basic Rights only to
        the following:

        By Overnight of Express Delivery:  By Facsimile Transmissions:
        The First National Bank of Boston  The First National Bank of 
        Shareholder Services Division      Boston
        150 Royall Street                  Corporate Reorganization
        Mail Stop:  45-02-53               Dept.
        Canton, MA  02021                  (617) 774-4519

                                       - 2 -<PAGE>




        By Hand Delivery:             By First Class Mail:
        BancBoston Trust Company      The First National Bank of Boston
         of New York                  P.O. Box 1889
        55 Broadway, 3rd Floor        Mail Stop:  45-02-53
        New York, NY                  Boston, MA  02105

        ___________________________________________________________________

                              FORM 1 - BASIC EXERCISE

        TO EXERCISE THE RIGHTS, complete the following section and return
        this Rights Certificate, with your check, to The First National
        Bank of Boston:

             Upon the terms and conditions set forth in the Disclosure
        Statement, I hereby exercise the number of Rights set forth below.

        Number of Rights Exercised:                                       
                  (Note:  No fractional Rights may be exercised)
        Payment Required*:  No. of basic Rights exercised x ______ per
        Right = $___________.
        (*Make your check payable to The First National Bank of Boston.
        If the number of Rights exercised results in a fraction of a cent,
        you should round downward to the nearest cent.  If the
        subscription  price per Unit is for any reason reduced, the
        corporation reserves the right to accept your subscription  and
        either treat your subscription as one to buy the increased number
        of Units purchasable for the aggregate payment amount, or return
        the difference.)

                  Payment in Full Must Accompany this Certificate
                           to Exercise the Basic Rights

        Authorized Signature of Subscriber:                               
        Print Name:                                                       
        Telephone Number(s): (_____)  _________________ (_____)           
        Social Security No.:                                              
        If you have any questions, call: (617) 575-3100


        ___________________________________________________________________

                        FORM 2 - OVERSUBSCRIPTION EXERCISE

        IF YOU WISH TO EXERCISE OVERSUBSCRIPTION RIGHTS, complete the
        following form as well as Form 1 above.  You may not exercise
        Oversubscription Rights unless you  have exercised the basic
        Rights in full (or, in the case of securities held in street name,
        the particular beneficial owner has exercised its basic Rights in
        full).

        Upon the terms and conditions set forth in the Disclosure
        Statement, I hereby irrevocably elect to purchase the additional
        number of Units set forth below, to the extent such Units are

                                       - 3 -<PAGE>




        available for purchase.  I understand that the actual number
        available for purchase will depend upon the number of basic Rights
        exercised by all holders hereof, and is subject to proration as
        set forth in the Rights and Warrants Agreement and described in
        the Disclosure Statement.

        Payment Required:_____________ x ___________ = __________   
                  No. of Units elected     per Unit    Total price
                  for purchase

        I hereby irrevocably promise to make payment of the purchase price
        for the Units actually allotted to me in cash, by bank certified
        or bank cashier's check or by wire transfer of funds within ten
        Business Days after expiration of the Rights Exercise Period.

        I hereby certify that I have been provided with a copy of the Plan
        and the Disclosure Statement.

        Date:____________, 1996                                           
                                      Authorized Signature

        If you have any questions call (617) 575-3100

        ___________________________________________________________________

                        FORM 3 -TO SELL OR TRANSFER RIGHTS

        For value received, _____ hereby sell, assign and transfer unto
        ________________________________ Rights to purchase Units
        represented by the within Certificate , and do hereby irrevocably
        constitute and appoint _____________________ to transfer said
        Rights on the books of the within corporation with full power of
        substitution in the premises.

        Holder's Signature                                                
        (Your signature must appear exactly as your name appears on the
        other side of this Certificate.)

        Dated:                                                            
        Signature Guaranteed by:                                          
        (To be guaranteed by your bank, your broker, etc.  See
        instructions in the Rights Offering Description and Subscription
        Instructions.)


                               DELIVERY INSTRUCTIONS

        (Fill out ONLY if delivery is to be made to an address not shown
        on the other side of this Certificate.)

        Name:                                                             

        Address:                                                          


                                       - 4 -




                                     EXHIBIT B

        WARRANT NO.                             Number of Shares: _______
        W-______________    


             VOID AFTER 5:00 P.M., EASTERN TIME, ON ____________, 1999

                                      WARRANT
                                    TO PURCHASE
                             SHARES OF COMMON STOCK OF

                          AQUILA BIOPHARMACEUTICALS, INC.

               Incorporated Under the Laws of the State of Delaware

        This certifies that

        or registered assigns (the "Holder"), is entitled to purchase from
        Aquila Biopharmaceuticals, Inc., a Delaware corporation (the
        "Company"), at any time after 9:00 a.m. Eastern time on the date
        of issuance and before 5:00 p.m., Eastern time, on ______________,
        1999, at the purchase price per share of $______ (the "Warrant
        Exercise Price"), the number of shares of Common Stock, $.01 par
        value, of the Company set forth above (the "Shares").  This
        Warrant is subject to redemption by the Company at a redemption
        price of $.10 per Share of Common Stock purchasable upon exercise
        hereof at any time prior to expiration of the Warrant; provided,
        that the Warrant is not subject to redemption unless the Warrant
        is then exercisable and the Daily Market Price per share of the
        Company's Common Stock for 20 consecutive Business Days shall have
        equaled or exceeded $_______ (the "Redemption Trigger Price"),
        ending within 10 Business Days prior to the date of the notice of
        redemption.  The number of Shares purchasable upon exercise of
        this Warrant, the Warrant Exercise Price per Share and the
        Redemption Trigger Price shall be subject to adjustment from time
        to time as set forth in the Rights and Warrants Agreement referred
        to below.

             This Warrant is one of a duly authorized issue of Common
        Stock Purchase Warrants with rights to purchase an aggregate of up
        to 5,000,000 shares of Common Stock, $.01 par value, of the
        Company and is issued under and in accordance with a Rights and
        Warrants Agreement dated as of _____________, 1996, between the
        Company and The First National Bank of Boston (the "Warrant
        Agent"), and is subject to the terms and provisions contained in
        such agreement, to all of which the Holder of this Warrant by
        acceptance hereof consents.  A copy of the Rights and Warrants
        Agreement may be obtained for inspection by the Holder hereof upon
        written request to the Warrant Agent.

             This Warrant may be exercised in whole or in part by
        presentation of this Warrant with the Purchase Form on the reverse
        side hereof duly executed (with a signature guarantee as provided<PAGE>




        in the Rights and Warrants Agreement) and simultaneous payment of
        the Warrant Exercise Price at the principal office of the Warrant
        Agent in Boston, Massachusetts.  Payment of such price shall be
        made at the option of the Holder in cash or by certified or bank
        check, all as provided in the Rights and Warrants Agreement.

             Upon any partial exercise of this Warrant, there shall be
        countersigned and issued to the Holder a new Warrant in respect of
        the Shares as to which this Warrant shall not have been exercised.
        This Warrant may be exchanged at the office of the Warrant Agent
        by surrender of this Warrant properly endorsed (with a signature
        guarantee) either separately or in combination with one or more
        other Warrants for one or more new Warrants to purchase the same
        aggregate number of Shares as here evidenced in the Warrant or
        Warrants exchanged.  No fractional Shares will be issued upon the
        exercise of rights to purchase hereunder, but the Company shall
        pay the cash value of any fraction upon the exercise of one or
        more Warrants.  This Warrant is transferable at the office of the
        Warrant Agent in the manner and subject to the limitations set
        forth in the Rights and Warrants Agreement.

             The Holder hereof may be treated by the Company, the Warrant
        Agent and all other persons dealing with this Warrant as the
        absolute owner hereof for all purposes and as the person entitled
        to exercise the rights represented hereby, or to the transfer
        hereof on the books of the Company, any notice to the contrary
        notwithstanding, and until such transfer is entered on such books,
        the Company may treat the Holder hereof as the owner for all
        purposes.

             This Warrant does not entitle the Holder hereof to any of the
        rights of a stockholder of the Company.

             This Warrant shall not be valid or obligatory for any purpose
        until it shall have been countersigned by the Warrant Agent.

        WITNESS the facsimile seal of the Company and the proper officers
        thereof

        Dated ____________, 1996















                                       - 2 -<PAGE>




        COUNTERSIGNED:

        The First National Bank of Boston,      AQUILA BIOPHARMACEUTICALS,
        as Warrant Agent                        INC.



        By:                                     By: ______________________
              Authorized Signature                   President

                                                Attest:   


                                                By:_______________________
                                                     Treasurer

                       [REVERSE SIDE OF WARRANT CERTIFICATE]

        By Overnight or Express Delivery:
        The First National Bank of Boston
        Shareholder Services Division 
        150 Royal Street    
        Mail Stop 45-02-53
        Canton, MA  02021

        By Facsimile Transmission:
        The First National Bank of Boston
        Corporate Reorganization Dept.
        (617)575-2233 or 2232

        By Hand Delivery:
        BancBoston Trust Company of New York
        55 Broadway, 3rd Floor
        New York, NY

        By First Class Mail:
        The First National Bank of Boston
        P.O. Box 1889
        Mail Stop: 45-02-53
        Boston, MA 02105


        FORM 1 - TO EXERCISE THE WARRANT, complete the following section
        and return this Certificate, with your check, to The First
        National Bank of Boston:

             I hereby exercise the number of Warrants set forth below.

        Number of Warrants Exercised:                                     
                            (Note: No fractional shares)

        Payment Required*: No. of Warrants Exercised x then current
        Warrant Exercise Price = $___________


                                       - 3 -<PAGE>




        (*Make your check payable to " The First National Bank of Boston".
        If the number of Warrants exercised results in a fraction of a
        cent, you should round downward to the nearest cent.)

                  Payment in Full Must Accompany this Certificate
                              to Exercise the Warrant

        Signature of Recordholder: _______________________________________

        Print Name: ___________________________________________

        Telephone Number(s): (_____) ____________________      (_____)
        ________________

        Social Security No.: _____________________________

                  ______________________________________________

                    If you have questions, call:(617) 575-3100

                  ______________________________________________


        FORM 2 - TO SELL OR TRANSFER A WARRANT, you should contact your
        broker, or if you have questions on how to complete this section,
        call(617) 575-3100.

             For Value Received, ______ hereby sell, assign and transfer
        unto _____________________


        Warrants to purchase shares of the capital stock represented by
        the within Certificate, and do hereby irrevocably constitute and
        appoint __________________________________________________ to
        transfer the said Warrant on the books of the within named
        Corporation with full power of substitution in the premises.

             Dated ______________ 199_     ___________________________
                                           Signature
             Signature Guaranteed


             ________________________












                                       - 4 -                                  
                                   EXHIBIT G
                                   (Assumed)

Employment                      Description                     Cost to Cure*
Agreements                      Date Signed                     Amount (in
                                                                Dollars)

Alison Taunton-Rigby            Employment Agmt. 4/6/95         0.00
Gerald A. Beltz                 Employment Agmt. 8/21/95        0.00
Deborah Grabbe                  Employment Agmt. 8/21/95        0.00
Robert Kammer                   Employment Agmt. 8/21/95        0.00
Rebecca Leaper                  Employment Agmt. 5/1/95         0.00
Stephen J. DiPalma              Employment Agmt. 3/1/96         0.00













































* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 1 
                                  EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
*Consulting Agreement           Date Signed                     Amount

Frederick Casselman             Consulting Agmt. 6/14/1994      0.00
Elliott Hillback                Consulting Agmt. 11/10/95       0.00
Keystone Consulting             Consulting Agmt. 11/9/1995      0.00
Science Regulatory Service      Consulting Agmt. 10/29/92       0.00
Inter.
Arthur Hurvitz                  Consulting Agmt. 1/1/95         0.00
John David                      Consulting Agmt. 1/1/95         0.00
Takis Papas                     Consulting Agmt. 1/1/95         0.00
Mary-Lou Clements               Consulting Agmt. 1/1/95         0.00
Richard J. Whitley              Consulting Agmt. 1/1/95         0.00
Michael Hawkins                 Consulting Agmt. 1/1/95         0.00
William Goodger                 Consulting Agmt. 1/27/95        0.00
Edwin C. Allen                  Consulting Agmt. 11/1/94        0.00
Musket Research Associates,     Consulting Agmt. 5/25/95        0.00
Inc.





































* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 2<PAGE>
                                EXHIBIT G
                                   (Assumed)

Leases                          Description                     Cost to Cure*
Real Estate & Equipment         Date Signed                     Amount

Worcester Business Development  Lease - 1/1/87, & all           148,841.51
Corporation                     amendments (365 Plantation St.
                                Worcester, MA)

Shrewsbury Central Park Assoc.  Entension and Amendment of      15,298.00
                                Lease for Unit 2 at 840 Boston
                                Turnpike Road - 8/10/93

1 Taft Court                    Lease between Dyncorp & CBC     0.00
Rockville, MD                   4/6/95

3 Taft Court                    Lease between CBC and           0.00
Rockville, MD                   BTRL contracts & Services Inc.
                                6/30/92

Pitney Bowes Credit Corporation Equipment Leasing               288.00

General DATA Comm Leasing       11/1/95-10/31/96                0.00
                                Data Training Equipment
                                Rockville & Worcester

AT&T Leasing                    Communication and Equipment     0.00
                                Leasing

Norwest Equipment Finance, Inc. Equipment Lease Contract No.    962.00
                                001-0007911-700


























* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 3<PAGE>
                                 EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
Insurance                       Date Signed                     Amount

Glen Falls Insurance            Property/Boiler                 0.00
                                11/1/95-11/1/96
Glen Falls Insurance            Commercial General Liability    0.00
                                11/1/95-11/1/96
Glen Falls Insurance            Out of State Automobile         0.00
                                11/1/95-11/1/96
Glen Falls Insurance            Umrella LIability               0.00
                                11/1/95-11/1/96
Glen Falls Insurance            Mass Auto                       0.00
                                11/1/95-11/1/96
Firemand Fund                   Inland Marine/Ocean Cargo       0.00
                                11/1/95-11/1/96
Chubb                           Crime/Kidnap & Ransom           0.00
                                11/1/95-11/1/96
MEDMARC/National Union Fire     Product Liability               0.00
Ins. Co.                        5/1/95-5/1/96

Fidelity & Casulty Co. of NY/   Foreign Liabilty/Foreign Auto/  0.00
Continental
                                Foreign Workers Compensation
                                11/1/95-11/1/96
Injured Workers' Insurance Fund Maryland Workers Compensation   0.00
                                open effective 7/7/94
Continental/National Ben        Illinoise Workers Compensation  0.00
Franklin
                                2/28/95-2/28/96
Atlantic Employers              New Jersey Workers Compensation 0.00
                                10/31/95-10/31/96
Mass Biotech SIG c/o Chubb      Mass Workers Compensation       0.00
Services
                                1/1/95-1/1/96
Continental                     Florida & Texas Workers Comp.   0.00
                                6/4/95-6/4/96
The Travelers                   Georgia Workers Compensation    0.00
                                6/4/95-6/4/96
State Compensation Insurance    California Workers Compensation 0.00
Fund
                                open effective 7/7/94
U.S. Fire Ins. Co./Crum &       Excess Umbrella                 0.00
Forster
                                11/1/95-11/1/96
Pacific Ins. Co./Continental    Product Liability - Adjuvants   0.00
Excess 
& Select                        12/1/95-12/1/96
Reliance Standard Life          Business Travel Accident        0.00
                                2/11/95-2/11/96






* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 4
                                EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
GRANTS                          Date Signed                     Amount

National Institute of Health    A135193                         0.00
                                7/1/95 - 6/30/96
National Institute of Health    A130837                         0.00
                                9/1/95 - 8/31/96
World Health Organization       EBA-175                         0.00
                                3/1/95-2/28/96














































* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 5
                                 EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
BIOPHARM General                Date Signed                     Amount

American Cyanamid               Supply Agmt.  4/27/93           0.00
American Cyanamid License Agmt. License Agmt. - 4/27/93         0.00
AXIS Genetics Limited           Collaborative research and      0.00
                                development agreement 3/28/94
Bell Flavors and Fragrances,    Agmt. 3/17/1994                 0.00
Inc.
Berghausen Corp                 Agmt. 3/2/1994                  0.00
Genentech                       License Agmt. - 12/31/89        27,535.00
Genentech                       License and Supply Agmt. -      0.00
                                6/29/92
Immucell Corp.                  Research & Evaluation and Tech. 0.00
                                Transfer Agmt. (7/22/92)
Inserm                          Research Agmt.                  0.00
Leland Stanford Junior          License Agmt. 8/1/88            76,359.00
University

Mallinckrodt Veterinary, Inc.   Agmt. 10/16/1991all amendments, 0.00
                                and all agmt. referred therein
                                or thereto

Mallinckrodt Veterinary, Inc.   Confidential Disclosure Agmt.   0.00
                                12/17/1993 all amendments, and
                                all agmt. referred therein or
                                thereto
Mallinckrodt Veterinary, Inc.   Agmt. 10/16/1991                0.00

Memorial Sloan Kettering        Research Agmts. - 9/24/92       0.00
New York Medical College        Memorandum of Agmt. for
                                Research Contract 12/5/91, as
                                amended

Pasteur Merieux Serums &        Agmt. - 3/30/92, all            0.00
Vaccins. S.A.                   amendments, and
                                all agmt. referred therein or
                                thereto
Pasteur Merieux Serums &        Agmt. - 9/28/1992               0.00
Vaccins, S.A.
SmithKline Beecham, P.L.C.      Dated  9/11/92                  0.00
                                License, Dvlp. and Supply Agmt
                                as amended, and all associated
                                Agmts. referenced therein &
                                thereto
Univax Biologics, Inc.          License and Supply Agmt.        0.00
                                4/20/93
                                as amendments & all associated 
                                Agmts. referenced therein &
                                thereto
The Regents of theUnivercity of License - 10/5/92               0.00
California



* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 6
                                 EXHIBIT G
                                   (Assumed)

University of Wisconsin-Madison Standard Research Agmt.         0.00
                                - 3/13/95
                                as may be amended from time to
                                time, & all referenced therein
                                & thereto

Virbac S.A.                     Agmt. between Virbac S.A. and   0.00
                                CBC, dated XXXas of June 1983,
                                all amendments thereto and all
                                associated agmts.

                                referenced therein and thereto.
Virbac S.A.                     Agmt. between Virbac S.A. and   0.00
                                CBC, dated as of June 1991, all
                                amendments thereto and all
                                associated agmts.
                                referenced therein and thereto.

Virbac Inc.                     Agmt. between Virbac S.A. and   0.00
                                CBC, dated as of May 1989, all
                                amendments thereto and all
                                associated agmts. referenced
                                therein and thereto.

Alfa-Laval Agri International   Agmt. dated as of 11/16/92 by   0.00
AB/CBC                          and between CBC and Alfa-Laval
                                Agri Int. AB, as amended from
                                time to time and all associated
                                Agmts. referenced therein or
                                thereto.

Virbac S.A.                     Agmt. dated as of 9/30/93, as   0.00
                                amended from time to time and
                                all associated Agmts.
                                referenced threin or thereto.

Walter Reed Army Instit. of     Agmt. 10/23/90                  0.00
Research
GRF Corporation                 Joint Venture Agmt. - 7/23/1992 0.00
                                among CBC, OT Company, 
                                BioNebraska, Inc., & GRF
                                Corporation and all associated
                                agmts. referred therein.












* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 7
                                 EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
Scientific Cooperation          Date Signed                     Amount
Agreements

Affymax                         MTA - 7/26/93                   0.00
British Bio-technology Ltd.     MTA - 6/2/94                    0.00
Imclone                         MTA - 6/23/93                   0.00
Inselburg, Joseph               MTA- 5/23/94                    0.00
Max-Planch Institut for         MTA  -  5/19/94                 0.00
Biologic
Medimmune                       MTA  - 2/2/94                   0.00
Therion Biologic Corporation    MTA  8/25/94                    0.00
Univercity of California        MTA  10/5/94                    0.00
Johns Hopkin                    MTA dated as of:                0.00
                                     a)   6/17/94
                                     b)   8/16/93
University of Kentucky          MTA - 5/13/94                   0.00
Ludwig Institute                MTA. - 5/25/94                  0.00
BioMira Inc.                    8/2/93                          0.00
BioMira Inc.                    8/2/93                          0.00
Escola Paulista De Medicina     11/30/93                        0.00
Leonard Wood Memorial American  4/23/93                         0.00
Leprosy Foundation
Medical Universitats Klinik     7/9/93                          0.00
Perseptive Biosystems           2/22/93                         0.00
Pharmakon Research              8/6/93                          0.00
International Inc.
The Wistar Institute            4/25/93                         0.00
"USAID" U.S. Agency for         11/24/93                        0.00
International Dev./"NYU"/CBC
U.S. Army Medical Research      6/30/93                         0.00
Institute of Infectious
Diseases
University of Rhode Island of   8/26/93                         0.00
Kingston ("URI")
British Bio-technology Limited  6/3/94                          0.00
Lyophilization Technology       1/5/94                          0.00
St. Louis University            3/22/94                         0.00
Ulfik, Lawrnece A.              2/16/94                         0.00
University of Connecticut       4/5/94                          0.00
Health Center
University of Kentucky          5/13/94                         0.00
University of Kentucky          5/13/94                         0.00
University of Oxford            1/7/94                          0.00
University of Oxford            3/1/94                          0.00
Cornell University School of    1/18/90                         0.00
Veterinary Medicine
University of Washington School 11/10/92                        0.00
of Medicine
University of Kentucky /        5/13/94                         0.00
Chandler Medical Ctr

NCI, Frederick Cancer Research  9/6/94                          0.00
Ctr

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 8
                                   EXHIBIT G
                                   (Assumed)

Harvard University School of    1/19/93                         0.00
Public Health
Stanford University School of   5/7/92                          0.00
Medicine
Centers for Disease Control     7/13/93                         0.00
The Scripps Institute           6/3/92                          0.00
Dartmouth University Medical    7/14/93                         0.00
School
US Army Medical R&D Command     7/20/93                         0.00
Memorial Sloan-Kettering Cancer 9/12/89                         0.00
Center
Memorial Sloan-Kettering Cancer 9/24/92                         0.00
Center
University of Alabama at        6/24/92                         0.00
Birmingham
Johns Hopkins Univ. School of   8/17/93                         0.00
Medicine
Walter Reed Army Institute of   6/7/91                          0.00
Research
State Veterinary Inst. for      6/25/91                         0.00
Virus Research
MedImmune, Inc.                 2/3/94                          0.00
Therion Biologics               8/26/94                         0.00
Max-Planck Institute            5/20/94                         0.00
Dartmouth Medical School        5/23/94                         0.00
Britsh Bio-Technology           6/6/94                          0.00
Novo Nordisk A/S                NDA - 10/29/92                  0.00
St. Louis University School of  3/22/94                         0.00
Medicine
New York Univ. School of        5/11/95                         0.00
Medicine
NCI-NIH                         9/12/94                         0.00
UCLA                            4/3/95                          0.00
US Army Inst. of Research       11/4/94                         0.00
New York Medical College        10/17/94                        0.00
NIAID-NIH                       4/6/95                          0.00
Newcastle Mater Hospital,       4/4/95                          0.00
Australia
Johns Hopkins Univ.             6/20/94                         0.00
Univ. of California - Irvine    6/14/94                         0.00
Roswell Park Cancer Institute   7/27/95                         0.00
Harvard School of Public Health 11/14/94                        0.00
Thomas Jefferson Univ. Medical  3/21/95                         0.00
School
MD Anderson Cancer Ctr, Univ.   12/20/95                        0.00
of Texas
NIAID-NIH                       4/6/95                          0.00
Univ. of Rochester              4/6/95                          0.00
Univ. of Virginia               7/27/95                         0.00
Dana Farber Cancer Institute                                    0.00
The Immune Response Corporation 2/13/95                         0.00
Hawaii Biotechnology Group      3/17/95                         0.00
Georgia State University        3/30/95                         0.00
PHRI, New York, NY              6/29/95                         0.00

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                          Page 9
                                  EXHIBIT G
                                   (Assumed)

MicroCarb                       1/16/95                         0.00
National Cancer Institute-NIH   8/31/94                         0.00
Tulane Univ. Medical Center     11/28/94                        0.00
New Jersey Medical School       10/24/94                        0.00
Wishard Memorial Hospital       10/14/94                        0.00
Univ. of Tennessee Medical      4/19/95                         0.00
Center
Int'l Center for Med. Res. &    11/2/95                         0.00
Training - Columbia
der Technischen Universitat     6/6/95                          0.00
Munchen - Germany
National Institutes of Health   7/27/95                         0.00
Montana State Univ.             7/27/95                         0.00
Fox Chase Cancer Center         11/28/95                        0.00
University of London - England  10/18/95                        0.00
M. D. Anderson Cancer Center,   8/25/95                         0.00
Univ. of Texas
Statens Seruminstitut - Denmark 12/7/95                         0.00
Frederick Cancer Research &     10/26/95                        0.00
Development Center - NCI
Universidad Nacional de         8/4/95                          0.00
Colombia
Queen Elizabeth II Medical      12/1/95                         0.00
Center
Ludwig Institute for Cancer                                     0.00
Research
National Institute of Allergy & 8/24/95                         0.00
Infectious Diseases - NIH
Yale University                 8/9/95                          0.00
University of Newcastle         12/7/95                         0.00

























* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 10
                                   EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
DIAGNOSTIC AGREEMENTS           Date Signed                     Amount

Abbott Laboratories             Sublicense Agmt. - 12/2/88      0.00
Abbott Laboratories             Sublicense Agmt. - 6/30/92      0.00
Baxter International, Inc.      Sublicense Agmt. 6/21/89        0.00
Becton, Dickinson and Company   Sublicense Agmt. 1/4/89         0.00
Behringwerke Aktiengesellschaft Sublicense Agmt. 9/30/89        0.00
Biochem International Inc.      Sublicense Agmt. - 6/26/91      0.00
Calypte Biomedical Corporation  Sublicense Agmt. 3/31/92        0.00
Chiron Corporation              Cross License Agmt. - Among     0.00
                                Chiron Corp. the President &
                                Fellows of Harvard College, &
                                CBC as of  9/23/91
Chiron Corporation              Agmt. - 8/21/1992               0.00
Diagnostics Pasteur             Agmt's among Diagnostic         38,450.00
                                Pasteur, CBC, the Fellows of
                                Harvard college, dated 10/89,
                                and any amendments thereto, and
                                all associated agmts.
                                referenced therein or thereto.

Genentech                       Sublicense Agmt. - 9/30/91      0.00
Murex Diagnostics Ltd.          License & Supply 6/30/92        0.00

President & Fellows of Harvard  License Agmt. - 5/1/87          59,026.00
College
Pasteur Merieux Serums &        Amended License Agmt.           0.00
Vaccins, S.A.                    12/14/1990
Pasteur Merieux Serums &        Termination Agmt. - 12/14/90    0.00
Vaccins, S.A.
Pharmacia                       AGMT 12/29/1989                 0.00
President & Fellows of Harvard  License Agmt.                   0.00
College
                                10/29/93

Progenics Pharmaceuticals, Inc. Sublicense - 3/17/95            0.00
Repligen Corporation            Sublicense Agmt. - 4/4/90       0.00
SmithKline Beecham              Sublicense 6/30/89              0.00
Syva                            Sublicense - 6/29/92            0.00
Carter Wallace                  Sublicense Agmt. - 4/1/1989     0.00
MicroGeneSys Inc.               Sublicense Agmt. - 2/29/1996    0.00













* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 11
                                   EXHIBIT G
                                   (Assumed)

Diagnostic Agreements           Description                     Cost to Cure*
General                         Date Signed                     Amount

Hugh Cottingham                 License Agmt.  2/15/82          17,198.00
                                between Cottingham & Angenics
                                and all amendments
Center for Disease Control      License Agmt. - 11/15/93        7,273.00
Hoffman-La Roche Inc.           Agmts. dated 7/23/86-8/19/86-   0.00
                                3/29/91 Hoffman-LaRoche,
                                Angneics Inc, & CBC and all
                                agmts, & all associated 
                                agmts. referred therein &
                                thereto
Massachusetts Institute of      License Agmt. - 11/1/85         31,130.00
Technology
MIT Development Corporation     Nondisclosure Agmt. - 11/19/91  0.00
MITEST Ltd.                     License Agmt. - 12/15/93        0.00
National Technical Information  License Agmt. 6/1/84            137,431.50
Service

National Technical Information  2/1/89                          137,431.50
Service
National Technical Information  License Agmt.                   105,137.00
Service
                                6/15/88
Ortho/Chiron/CBC                Among Ortho Diag. Inc.; Chiron  0.00
                                Corp. & CBC; dated 3/30/93 &
                                any amendts & all associated
                                agmts. referrenced therein &
                                thereto.
Ortho/Chiron/CBC                Among Ortho Diag. Inc.; Chiron  0.00
                                Corp. & CBC; dated 6/10/93 &
                                any amendts & all associated
                                agmts. referrenced therein &
                                thereto.
Ortho/Chiron/CBC                Among Ortho Diag. Inc.; Chiron  0.00
                                Corp. & CBC; dated 11/15/93 &
                                any amendts & all associated
                                agmts. referrenced therein &
                                thereto.
Otsuka Pharmaceutical           Nondisclosure Agmt. 9/17/1992   0.00
SelfCare Inc.                   Purchase & Sale of the          0.00
                                Authorized Share
                                Capital of Ordinary Shares of
                                Cambridge
                                Biotech Limited, by CBC to
                                Selfcare, Inc.
                                dated as of 11/30/94, and any 
                                amendments and all assciated
                                Agreements referenced therein &
                                thereto.
Sienna Biotech Inc.             Option Agmt. 11/12/1992         0.00
Gary Pearson & Biotech Research                                 0.00
Laboratories, Inc.

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 12
                                   EXHIBIT G
                                   (Assumed)

Syva Company                    License Agmt. - 6/29/1992       147,297.00
                                between Syva Co., Syntex
                                (U.S.A.) Inc.
                                and CBC
The Regents of the Univ. of     10/26/84                        1,070.00
California
The Regents of the Univ. of     Research Agmt. - 10/5/1992      0.00
California
Univ. of Alabama at Birmingham  Contract Services Agmt. -       0.00
                                11/18/1992
University of Massachusetts     License Agmt. 6/17/1988         6,411.00
University of Massachusetts     License Agmt. 11/1/1984         42,358.00
Virginia Tech Intellectual      Licensing Agmt. 4/19/1990       21,379.00
Properties, Inc.
Toray Fuji                      Distribution Agmt. 11/1/1987    0.00
                                Stock Purchase and Transfer
                                Agmt. btwn. CBC and BioMira,    0.00
                                Inc. - 2/28/1994
                                Transfer  Agmt. btwn. CBC and
                                ADI
                                Diagnostics, Inc. - 2/28/1994   0.00
                                CBC-BioMira Licence Agmt. -     0.00
                                2/28/1994
                                BioMira-CBC Licence Agmt. -     0.00
                                2/28/1994
                                CBC-ADI License Agmt. -         0.00
                                2/28/1994
                                ADI-CBC License Agmt. - 
                                2/28/1994


























* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 13
                                   EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
Miscellaneous                   Date Signed                     Amount

Sepragen Corp.                  10/2/92                         0.00
Actigen Incorporated            9/7/93                          0.00
BioChem ImmunoSystems           3/25/93                         0.00
Children's Hospital             5/14/93                         0.00
CSL Limited                     3/18/93                         0.00
Diamond Associates              11/17/93                        0.00
Direct Access Diagnostics       11/10/93                        0.00
Empyrean Diagnostics, Inc.      11/29/93                        0.00
Hunneman Commercial Company     11/5/93                         0.00
Immunetics, Inc.                9/24/93                         0.00
NYU Medical Center              4/6/93                          0.00
Serex International, Inc.       4/30/93                         0.00
University of Alabama at        9/9/93                          0.00
Birmingham ("UAB Research
Foundation")
University of PA                2/24/93                         0.00
University of Pennsylvania      3/16/93                         0.00
Boston BioMedical Consultants   2/28/94                         0.00
Ciba Corning Diagnostics        2/9/94                          0.00
Corporation
Genelabs Diagnostics Ptd. Ltd   2/15/94                         0.00
Meridian Diagnostics, Inc.      6/27/94                         0.00
Riverside Partners              6/29/94                         0.00
Therion Biologics Corporation   4/15/94                         0.00
Tulane University Medical       6/22/94                         0.00
Center
Wampole Laboratories            6/27/94                         0.00

























* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 14
                                   EXHIBIT G
                                   (Assumed)

                                Description                     Cost to Cure*
Post Petition Agreements        Date Signed                     Amount

Alexon                          8/4/94                          0.00
Amvax, Inc.                     7/15/94                         0.00
Anonymous Test Services, Inc.   9/12/94                         0.00
BASF Bioresearch Corporation    12/13/94                        0.00
Becton Dickinson Microbilogy    11/1/94                         0.00
Systems (Div.of Bec. Dick. &
Co)
Biochem Pharma Inc.             8/30/94                         0.00
Bio-Rad Laboratories, Inc.,     10/17/94                        0.00
Boehringer Mannheim             9/23/94                         0.00
International SA
Boston Biomedica, Inc.          7/25/94                         0.00
Capricorn Products              7/14/94                         0.00
Capricorn Products              7/24/94                         0.00
ChemTrak                        9/20/94                         0.00
Ciba Corning Diagnostics        9/20/94                         0.00
Corporation
Department of Health & Human    8/30/94                         0.00
Services
Department of Health & Human    8/30/94                         0.00
Services
Department of The Army          11/10/94                        0.00
Dynagen, Inc.                   9/22/94                         0.00
F.J.D. Enterprises, Inc.        11/18/94                        0.00
Focus/MRL, Inc.                 9/28/94                         0.00
Genzyme Diagnostics             9/23/94                         0.00
Grayson & Associates            9/16/94                         0.00
Gull Laboratories               8/31/94                         0.00
Harvard University School of    11/14/94                        0.00
Public Health
Hemagen Diagnostics, Inc.       7/27/94                         0.00
Manuso, Alexander & Associates, 10/18/94                        0.00
Inc.
Medicorp Inc.                   7/26/94                         0.00
Dr. Frans W.H.M. Merkus         10/29/94                        0.00
Microcarb, Inc.                 10/7/94                         0.00
Microbiology Reference          9/6/94                          0.00
Laboratory
Organon Teknika Corporation     12/15/94                        0.00
Quidel                          8/30/94                         0.00
Roche Diagnostics               7/12/94                         0.00
Sanofi Diagnostics Pasteur,     10/13/94                        0.00
Inc.
S R Technologies, Inc.          9/26/94                         0.00
Syva Company                    7/22/94                         0.00
T. Cell Sciences, Inc.          8/9/94                          0.00
Allergenics, Inc.               12/19/95                        0.00
Alcon Laboratories, Inc.        7/21/95                         0.00
Allen & Company Incorporated    2/2/95                          0.00
Alza Corporation                7/10/95                         0.00
Alza Corporation                11/20/95                        0.00

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 15
                                   EXHIBIT G
                                   (Assumed)

American Cyanamid Company       10/2/95                         0.00
American Standard Inc.          6/26/95                         0.00
Analytical Biosystems           1/25/95                         0.00
Auerbach, Pollak & Richardson,  7/17/95                         0.00
Inc.
BancBoston State Street         10/1/95                         0.00
Investor Services
Benchmark Consulting Group,     8/10/95                         0.00
Inc.
BioMerieux Vitek                5/3/95                          0.00
Booth, Melvin D.                2/9/95                          0.00
Boston Biomedica, Inc.          5/16/95                         0.00
Boston University School of     11/8/95                         0.00
Medicine
Calypte Biomedical              3/4/95                          0.00
Centers for Disease Control     4/17/95                         0.00
("CDC")
Chemsyn Science Laboratories    10/24/95                        0.00
Clinetics Corporation           9/29/95                         0.00
Clinetics Corporation           12/28/95                        0.00
Davos Chemical Corp. / Plasto   12/21/95                        0.00
SA (Synkem Division)
Davos Chemical Corp. / Separex  10/23/95                        0.00
Division Chromatographie
Diamedix Corporation            8/17/95                         0.00
Fox Chase Cancer Center         11/14/95                        0.00
Fox Chase Cancer Center         11/14/95                        0.00
Genzyme Diagnostics             2/1/95                          0.00
Great American Insurance Co.    3/15/95                         0.00
Intracel Corp.                  7/14/95                         0.00
Klaud, Stephen                  4/7/95                          0.00
Lane, Richard J.                2/9/95                          0.00
Levy, Nelson L.                 1/6/95                          0.00
Macrochen Corporation           12/12/95                        0.00
MedTech Capital                 8/10/95                         0.00
Mehta and Isaly                 9/22/95                         0.00
Michelene Powers                3/22/95                         0.00
MicroCarb, Inc.                 1/16/95                         0.00
National Cancer Institute       9/29/95                         0.00
National Institutes of Health   10/13/95                        0.00
Nelson, John                    4/5/95                          0.00
NERAC, Inc.                     12/19/95                        0.00
The Ohio State University       12/20/95                        0.00
Organon Teknika Corporation     1/24/95                         0.00
Pharmacia Inc.                  10/16/95                        0.00
Pharmakon Research              12/19/95                        0.00
INternational, Inc.
Pharm-Eco Laboratories, Inc.    11/15/95                        0.00
Poorman-Douglas                 9/20/95                         0.00
Presidio Life Sciences Group    8/31/95                         0.00
Prochrom Lab                    2/14/95                         0.00
REAADS Medical Products, Inc.   8/7/95                          0.00
SAF Bulk Chemicals              10/23/95                        0.00
Sanborn, Henry N.               4/7/95                          0.00

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 16
                                   EXHIBIT G
                                   (Assumed)

Scheer Partners, Inc.           5/17/95                         0.00
Scheer Partners, Inc.           8/1/95                          0.00
Scumaci, Robert F.              2/22/95                         0.00
Selfcare, Inc.                  6/28/95                         0.00
Separex Division                10/23/95                        0.00
Chromatographie / Davos
Chemical Corp.
Seradyne, Inc.                  6/30/95                         0.00
Stanford University School of   6/23/95                         0.00
Medicine/Perimmune, Inc.
Strategic Diagnostics Inc.      9/5/95                          0.00
Statens Seruminstitut           11/30/95                        0.00
Statens Seruminstitut           11/30/95                        0.00
Sullivan, Charles               4/7/95                          0.00
Svrluga, Richard                1/6/95                          0.00
TM Capital Corp. (Michael       6/16/95                         0.00
Goldman)
TSI Washington Laboratories     3/13/95                         0.00
U.S. Army Medical Research      10/27/95                        0.00
Insitiute of Infectious
Diseases
University of Newcastle         12/7/95                         0.00
University of Newcastle         11/30/95                        0.00
University of Texas             8/23/95                         0.00
University of Texas             8/25/95                         0.00
Walter Reed Army Institute of   10/21/95                        0.00
Research
Whitlow, M. Blanton             1/6/95                          0.00
WHO Collaborative Center for    11/6/95                         0.00
Rickettsial Reference and
Research
WHO Collaborative Center for    10/31/95                        0.00
Rickettsial Reference and
Research
Willis Cornoon Corp. of Mass    3/15/95                         0.00
***Institut Pasteur             1/15/96                         0.00



















* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 17
                                   EXHIBIT G
                                   (Assumed)

Allergenics, Inc.               1/15/96                         0.00
Bayer Diagnastics               2/19/96                         0.00
Carter-Wallace, Inc./Immune     1/19/96                         0.00
Probe Inc.
Carter-Wallace, Inc./JDL        1/19/96                         0.00
Associates
IncStar Corporation             1/9/96                          0.00
Ohio State University           1/29/96                         0.00
Perlmmune, Inc.                 1/2/96                          0.00
Perlmmune, Inc.                 1/2/96                          0.00
Pharmakon Research              1/25/96                         0.00
International, Inc.
Remel Limited Partnership       1/19/96                         0.00
UF/USAD/SADC Heartwater         1/29/96
Research Project, Veterinary
Research Lab
UF/USAD/SADC Heartwater         1/24/96                         0.00
Research Project, Veterinary
Research Lab
Unisyn Technologies, Inc.       2/14/96
U.S. Naval Medical Research     2/21/96                         0.00
Unit, No. 3
U.S. Naval Medical Research     2/21/96                         0.00
Unit, No. 3
The University of Alabama at    1/19/96                         0.00
Birmingham
The University of Alabama at    1/19/96                         0.00
Birmingham
Viral and Rickettsial Disease   1/4/96                          0.00
Laboratory
Diatech Diagnostics             3/12/96                         0.00
Microbiological Associates,     Agmt. No. 2311 2/29/96          0.00
Inc.
Naples, John                    Letter Agmt. 1/23/96            0.00
Swigs Tropical Institute        Agmt. signed 1/19/96 and 2/22/
                                96
Carter-Wallace, Inc.            Asset Purchase Agreement dated
                                as of 5/1/96
                                and related Escrow Agreement    0.00
                                and Supply Agreement















* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 18
                                   EXHIBIT G
                                   (Assumed)

Employee                        Description                     Cost to Cure
Confidentiality Agmts           Date Signed                     Amount

Amsden, Jennifer A.             11/1/93                         0.00
Anderson, Christine A.          12/18/90                        0.00
Anderson, David A>              12/11/91                        0.00
Anderson, Robert C.             7/24/89                         0.00
Austin-Ritchie, Tammy L.        10/30/94                        0.00
Ayers, June G.                  9/17/90                         0.00
Balkovic, Edward S.             11/1/93                         0.00
Baronouskas, Loriann            8/14/95                         0.00
Barbon, Jeffrey                 9/26/95                         0.00
Barbosa, Arnoldo                3/13/95                         0.00
Barton, Sandra L.               8/3/92                          0.00
Beaver, Jeffrey T.              6/20/94                         0.00
Beltz, Gerald A.                8/18/83                         0.00
Bille, Curtis G.                1/14/93                         0.00
Bagosian, Laura A.              4/24/87                         0.00
Breen, Susan                    2/8/94                          0.00
Bulger, Patrice A.              11/2/87                         0.00
Caron, Jr., Kenneth A.          11/25/91                        0.00
Cassaneli, Paula A.             3/6/89                          0.00
Chan, Teresa H.                 6/24/91                         0.00
Chiavoloni, Jose R.             11/28/89                        0.00
Chin, Rena S.L.                 10/28/91                        0.00
Chioda, John P.                 10/31/89                        0.00
Cloufier, Penny A.              10/8/85                         0.00
Conrad, David I.                2/14/95                         0.00
Cooper, Jeff K.                 4/25/89                         0.00
Corbo, Joanne                   10/19/92                        0.00
Corey, Maria P.                 3/10/95                         0.00
Coughlin, Richard T.            4/11/87                         0.00
Cox, Daniel E.                  9/27/89                         0.00
Cusson, Nancy A.                8/8/88                          0.00
Davis, Kathryn R.               6/15/92                         0.00
Dean, Angela K.                 12/15/87                        0.00
Denogean, Luis Alex             3/14/95                         0.00
Dixson, Mark S.                  3/29/93                        0.00
Duncan, Cynthia E. Brown        3/1/95                          0.00
Dvorak, Gillian I.              6/29/87                         0.00
Ekinci, Fatma J.                4/1/92                          0.00
Enyim, Koff                     8/19/91                         0.00
Feigelman, Rhonda E.            12/7/92                         0.00
Finn, Mary                      2/1/90                          0.00
Foxhan, Daniel P.               3/10/94                         0.00
Foulkrod, Paul, M.              8/22/94                         0.00
Freeman, Bente                  7/24/89                         0.00
Fumonavicius, Maria C.          7/10/94                         0.00
Gagne, Linda L.                 11/17/89                        0.00
Ganley, Mellyn                  10/2/95                         0.00
Gallagher, Kathleen E.          2/28/94                         0.00
Gardner, Bonnie H.              9/18/89                         0.00
Gilles, David W.                1/14/94                         0.00
Gingrich-Hicker, Cindy A.       3/23/87                         0.00

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 19
                                   EXHIBIT G
                                   (Assumed)

Grabbe, Deborah B.              4/14/93                         0.00
Green, Karen T.                 10/15/87                        0.00
Greer, Cynthia A.               9/24/87                         0.00
Hallaron, Paul F.               10/16/89                        0.00
Harte, Karen M.                 8/27/89                         0.00
Hawthorne, Rita L.              4/15/91                         0.00
Hay, Stephen                    10/23/95                        0.00
Hoang, Han Viet                 ????                            0.00
Hogan, Cheryl M.                2/28/94                         0.00
Hollender, Norma A.             1/3/95                          0.00
James, Duane L.                 5/30/91                         0.00
Kammer, Robert                  5/18/93                         0.00
Kashala, Lukemena O.            8/23/92                         0.00
Kelly, Jr., Thomas H.           1/31/92                         0.00
Kensil, Charlotte A.            12/5/85                         0.00
Kilmer, Richard H.              1/31/95                         0.00
Kissiday, Stephanie             5/4/87                          0.00
Kohl, John H.                   3/1/93                          0.00
Kozberg, Patricia M.            6/13/89                         0.00
Lachapelle, Nelson              12/26/95                        0.00
Larkham, Louie                  8/4/95                          0.00
Lazarus, Gary                   11/30/95                        0.00
Listenwilk, Suzel D.            8/13/93                         0.00
Li, Joice X.                    4/19/95                         0.00
Long, Gary E.                   3/23/89                         0.00
Lord, John A.                   8/29/92                         0.00
Mard, Shawn                     1/15/96                         0.00
Marshall, Jay R.                5/25/93                         0.00
Mason, Lori J.                  9/15/89                         0.00
Meenan, Karen F.                7/14/92                         0.00
Melady, Wendy A.                2/17/89                         0.00
Mesale, Jr., Albert D.          12/12/88                        0.00
Munroe, Kenneth J.              11/12/90                        0.00
Murphy, Cheryl J.               6/25/87                         0.00
Murphy, Matthew R.              3/23/93                         0.00
Nelson, Rosemary                7/6/95                          0.00
Obeg, Mark P.                   ??????                          0.00
Odom, Kevin A.                  4/14/93                         0.00
Osowski, Barbara J.             12/6/91                         0.00
Oslowski, Jean                  12/12/87                        0.00
Packard, Kevin M.               2/21/95                         0.00
Parousis, Christina             3/9/92                          0.00
Parousis, Christos              4/18/94                         0.00
Percorelli, Marlee              3/6/95                          0.00
Pelken, Loreta M.               ???                             0.00
Pelletier, James R.             4/1/91                          0.00
Plume, Sharry A.                6/13/88                         0.00
Quinn, William P.               3/23/92                         0.00
Radcliff, Wilfred               9/28/89                         0.00
Rarick, RIsa Marie              11/30/94                        0.00
Recchia, Joanne                 11/1/86                         0.00
Reidy, Thomas J.                11/22/93                        0.00
Richert, Linda A.               4/12/94                         0.00
Rich, Linda E.                  2/16/95                         0.00

* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 20
                                   EXHIBIT G
                                   (Assumed)

Robert, Roxanne M.              7/30/90                         0.00
Robinson, Lisa M.               11/10/93                        0.00
Seals, Jonathan R.              7/16/87                         0.00
Shaffer, Douglas J.             6/17/91                         0.00
Sillman, Deborah                3/3/93                          0.00
Simms, Karen E.                 9/27/89                         0.00
Soltysik, Sean                  9/13/90                         0.00
Stone, Carol A.                 4/6/87                          0.00
Storey, James R.                7/29/84                         0.00
Sullivan, Debra Lee             1/3/95                          0.00
Tounton-Rigby, Alison           4/6/95                          0.00
Warren, Susan P.                2/13/89                         0.00
Weissman, Bruce A.              3/14/95                         0.00
Wendler, Paul B.                9/6/90                          0.00
Wheeler, Deborah A.             8/14/91                         0.00
Wheeler, James J.               10/31/94                        0.00
White, Abbie C.                 5/23/89                         0.00
Wilson, Mary-Jane               8/12/87                         0.00
Wu, Jia-Yan                     7/22/89                         0.00




































* If Cost to Cure is listed at 0.00, there are no defaults;
if an amount greater than 0.00 is listed, such amount is maximum
amount due on account of any and all defaults.                         Page 21

                                     EXHIBIT H
                                    (Rejected)



        Employment                       Description
        Agreements                       Date Signed
        James C. Bass                    Employment Agmt. 7/20/93
        Thomas T. Broomall               Agmt.  3/16/94
        Patrick J. Leonard               Employment Agmt. 7/1/93
                                         Description
















































                                      Page 1<PAGE>
                                     EXHIBIT H
                                    (Rejected)


        *Consulting Agreement            Date Signed
        Thomas Li                        Employment Consulting Agmt.
                                         5/1/90
        Jack Cassorla                    Consulting Agmt. 12/4/92
        Jiri Vystyd                      Consulting Agmt. 10/4/93


















































                                      Page 2<PAGE>
                                     EXHIBIT H
                                    (Rejected)


        Diagnostic Agreements            Description
        General                          Date Signed
        Dynagen                          License & Supply - 12/14/92
        E.I. duPont deNemours and        Distribution Agmt. - 10/15/92
        Company
        Liveris, John                    Consulting Agmt.
        Murex Diagnostics Ltd.           HIV-1 AP Western Blot - 5/28/92
        Gary Pearson Letter Agreement    Gary Pearson Letter Agreement -
                                         11/3/91
        Saudi Arabia                     Distribution Agmt. 1/7/1994
                                         Contract of Agency
        Syva Company                     Dev./Supply Agmt. - 6/29/1992

        Swaebe International Corporation Consult., and Comp. Agmt.
                                         12/22/93
        Uganda Virus Research Institute  Memo of Understanding 3/20/1992
        Porex Technologies Corp. of      Confidentiality of Information
        Georgia                          Agmt.; Addendums 5/1/1989
        TSI Mason Laboratories           Terms and Conditions of Quotation
                                         Performance of Services Agmt.
                                         7/30/93 Description


































                                      Page 3<PAGE>
                                     EXHIBIT H
                                    (Rejected)


        Miscellaneous                    Date Signed
        Codiapharm, SA                   12/20/91
        Codiapharm, SA                   Cancellation Agmt.
                                         1/21/93
        Demetriou Realty, Inc.           11/15/90
        ABE Qjimica Internacional de     4/3/93
        Venezuela
        AHSECO Peru S.A.                 4/12/93
        Arquisa                          5/17/93
        Chem-Lab. S.A.                   4/12/93
        Commercial Mersal S.A.           4/12/93
        Daewong Pharmaceutical           4/13/93
        Daewong Pharmaceutical           Distribution and Sales 
                                         Representation Agmt.  -
                                         4/13/1993
        First National Bank of Boston    Rights of Shareholder to purchase
                                         Common Stock prusuant to &
                                         subject to the conditions of the
                                         Shareholders Rights Agreement
                                         between CBC & The First National
                                         Bank of Boston, as Rights Agmt. -
                                         3/17/89
        H.S. Biosystem Produtos          6/9/93
        Hospitalares Ltda.
        Immunotech LTDA                  5/11/93
        Labhospy                         5/11/93
        Labtec Asociados Ltda.           5/17/93
        O.B.R.A 16 S.R.L.                6/9/93
        ADI                              Distribution Agmt 3/30/92


























                                      Page 4<PAGE>
                                     EXHIBIT H
                                    (Rejected)


        Capricorn Products               8/24/94
        Thomas LaMont, M.D.
        Thomas LaMont, M.D. / Harry      Letter dated 9/10/84
        Pothovlakis



















































                                      Page 5




                                     EXHIBIT I

                           Contracts Assigned to Aquila


        Employment                        Description
        Agreements                        Date Signed    

        Alison Taunton-Rigby              Employment Agmt. 4/6/95

        Gerald A. Beltz                   Employment Agmt. 8/21/95

        Deborah Grabbe                    Employment Agmt. 8/21/95

        Robert Kammer                     Employment Agmt. 8/21/95

        Stephen J. DiPalma                Employment Agmt. 3/1/96


                                          Description
        Consulting Agreement              Date Signed    

        Frederick Casselman               Consulting Agmt. 6/14/94

        Elliott Hillback                  Consulting Agmt. 11/10/95

        Keystone Consulting               Consulting Agmt. 11/9/95

        Science Regulatory Service Inter. Consulting Agmt. 10/29/92

        Arthur Hurvitz                    Consulting Agmt. 1/1/95

        John David                        Consulting Agmt. 1/1/95

        Takis Papas                       Consulting Agmt. 1/1/95

        Mary-Lou Clements                 Consulting Agmt. 1/1/95

        Richard J. Whitley                Consulting Agmt. 1/1/95

        Michael Hawkins                   Consulting Agmt. 1/1/95

        William Goodger                   Consulting Agmt. 1/27/95

        Edwin C. Allen                    Consulting Agmt. 11/1/94

        Musket Research Associates, Inc.  Consulting Agmt. 5/25/95<PAGE>




        Leases                            Description
        Real Estate & Equipment           Date Signed    

        Worcester Business Development    Lease - 1/1/87, & all amendments
        Corporation                       (365 Plantation St. Worcester,
                                          MA)

        Shrewsbury Central Park Assoc.    Extension and Amendment of Lease
                                          for Unit 2 at 840 Boston
                                          Turnpike Road - 8/10/93

        Pitney Bowes Credit Corporation   Equipment Leasing

        AT&T Leasing                      Communication and Equip. Leasing

        3 Taft Court                      Lease between CBC and BTRL 
        Rockville, MD                     Contracts& Services, Inc.
                                          6/30/92

        General DataCom Leasing           11/1/95 - 10/31/96
                                          Data Training Equipment 
                                          (Worc. and Rockville)


                                       Description
        Insurance                      Date Signed                  

        Glen Falls Insurance           Property/Boiler
                                       11/1/95-11/1/96

        Glen Falls Insurance           Commercial General Liability
                                       11/1/95-11/1/96

        Glen Falls Insurance           Out of State Automobile
                                       11/1/95-11/1/96

        Glen Falls Insurance           Umbrella Liability
                                       11/1/95-11/1/96

        Glen Falls Insurance           Mass Auto
                                       11/1/95-11/1/96

        Fireman's Fund                 Inland Marine/Ocean Cargo
                                       11/1/95-11/1/96

        Chubb                          Crime/Kidnap & Ransom
                                       11/1/95-11/1/96

        Fidelity & Casualty Co. of     Foreign Liabilty/Foreign Auto/
        NY/Continental                 Foreign Workers Compensation
                                       11/1/95-11/1/96

        Continental/National Ben       Illinois Workers Compensation
        Franklin                       2/28/95-2/28/96

                                       - 2 -<PAGE>




        Atlantic Employers             New Jersey Workers Compensation
                                       10/31/95-10/31/96

        Mass Biotech SIG c/o Chubb     Mass Workers Compensation
        Services                       1/1/95-1/1/96

        Continental                    Florida & Texas Workers Comp.
                                       6/4/95-6/4/96

        The Travelers                  Georgia Workers Compensation
                                       6/4/95-6/4/96

        State Compensation Insurance   California Workers Compensation 
        Fund                           open effective 7/7/94

        U.S. Fire Ins. Co./Crum &      Excess Umbrella
        Forster                        11/1/95-11/1/96

        Pacific Ins. Co./Continental   Product Liability - Adjuvants
        Excess & Select                12/1/95-12/1/96

        Reliance Standard Life         Business Travel Accident 
                                       2/11/95-2/11/96


                                       Description
        GRANTS                         Date Signed                  

        National Institute of Health   A135193
                                       7/1/95 - 6/30/96

        National Institute of Health   A130837
                                       9/1/95 - 8/31/96

        World Health Organization      EBA-175
                                       3/1/95-2/28/96


                                       Description
        BIOPHARM General               Date Signed                  

        American Cyanamid              Supply Agmt. - 4/27/93

        American Cyanamid License      License Agmt. - 4/27/93
        Agmt.

        AXIS Genetics Limited          Collaborative research and
                                       development agreement 3/28/94

        Bell Flavors and Fragrances,   Agmt. - 3/17/94
        Inc.

        Berghausen Corp                Agmt. - 3/2/94


                                       - 3 -<PAGE>




        Genentech                      License Agmt. - 12/31/89

        Genentech                      License and Supply Agmt. - 6/29/92

        Immucell Corp.                 Research & Evaluation and Tech.
                                       Transfer Agmt. (7/22/92)

        Inserm                         Research Agmt.

        Leland Stanford Junior         License Agmt. - 8/1/88
        University

        Mallinckrodt Veterinary,       Agmt. - 10/16/91, all amendments 
        Inc.                           and all agmts. referenced therein 

        Mallinckrodt Veterinary, Inc.  Confidential Disclosure Agmt. - 
                                       12/17/93 all amendments, and all
                                       agmts. referenced therein 

        Mallinckrodt Veterinary, Inc.  Agmt. - 10/16/91 

        Memorial Sloan Kettering       Research Agmts. - 9/24/92

        New York Medical College       Memorandum of Agmt. for Research
                                       Contract - 12/5/91, as amended

        Pasteur Merieux Serums &       Agmt. - 3/30/92, all amendments, 
        Vaccins, S.A.                  and all agmts. referenced therein 

        Pasteur Merieux Serums &       Agmt. - 9/28/92
        Vaccins, S.A.

        SmithKline Beecham, P.L.C.     License, Dvlp. and Supply Agmt. -
                                       9/11/92 as amended, and all
                                       associated agmts. referenced 
                                       therein 

        Univax Biologics, Inc.         License and Supply Agmt. - 4/20/93
                                       as amended and all associated 
                                       Agmts. referenced therein 

        The Regents of the University 
        of California                  License - 10/5/92

        University of Wisconsin-       Standard Research Agmt. - 3/13/95, 
        Madison                        as amended and all agmts.
                                       referenced therein 

        Virbac S.A.                    Agmt. - 6/83, all amendments
                                       thereto and all associated agmts.
                                       referenced
                                       therein



                                       - 4 -<PAGE>




        Virbac S.A.                    Agmt. - 6/91, all amendments
                                       thereto and all associated agmts.
                                       referenced therein

        Virbac Inc.                    Agmt. - 5/89, all amendments
                                       thereto and all associated agmts.
                                       referenced therein 

        Alfa-Laval Agri International  Agmt. - 11/16/92, as amended and
        AB/CBC                         all associated agmts. referenced
                                       therein

        Virbac S.A.                    Agmt. - 9/30/93, as amended and all 
                                       associated Agmts. referenced threin

        Walter Reed Army Instit.       Agmt. - 10/23/90
        of Research

        GRF Corporation                Joint Venture Agmt. - 7/23/92 among
                                       CBC, OT Company, BioNebraska, Inc.,
                                       and GRF Corporation and all
                                       asociated agmts. referenced therein


                                       Description
        SCIENTIFIC COOPERATION AGMTS.  Date Signed                  

        Affymax                        7/26/93

        British Bio-technology Ltd.    6/2/94

        Imclone                        6/23/93

        Inselburg, Joseph              5/23/94

        Max-Planch Institut for        5/19/94
        Biologic

        Medimmune                      2/2/94

        Therion Biologic Corporation   8/25/94

        University of California       10/5/94

        Johns Hopkin                   dated as of:
                                         a)   6/17/94
                                         b)   8/16/93

        University of Kentucky         5/13/94

        Ludwig Institute               5/25/94

        BioMira Inc.                   8/2/93


                                       - 5 -<PAGE>




        BioMira Inc.                   8/2/93

        Escola Paulista De Medicina    11/30/93

        Leonard Wood Memorial American 
        Leprosy Foundation             4/23/93

        Medical Universitats Klinik    7/9/93

        Perseptive Biosystems          2/22/93

        Pharmakon Research
        International Inc.             8/6/93

        The Wistar Institute           4/25/93

        U.S. Agency for International 
        Dev./"NYU"/CBC                 11/24/93

        U.S. Army Medical Research 
        Institute of Infectious
        Diseases                       6/30/93

        University of Rhode Island
        of Kingston                    8/26/93

        British Bio-technology Limited 6/3/94

        Lyophilization Technology      1/5/94

        St. Louis University           3/22/94

        Ulfik, Lawrence A.             2/16/94

        University of Connecticut
        Health Center                  4/5/94

        University of Kentucky         5/13/94

        University of Kentucky         5/13/94

        University of Oxford           1/7/94

        University of Oxford           3/1/94

        Cornell University School of 
        Veterinary Medicine            1/18/90

        University of Washington 
        School of Medicine             11/10/92

        University of Kentucky /
        Chandler Medical Ctr           5/13/94


                                       - 6 -<PAGE>




        NCI, Frederick Cancer Research
        Ctr                            9/6/94

        Harvard University School of 
        Public Health                  1/19/93

        Stanford University School of 
        Medicine                       5/7/92

        Centers for Disease Control    7/13/93

        The Scripps Institute          6/3/92

        Dartmouth University Medical
        School                         7/14/93

        US Army Medical R&D Command    7/20/93

        Memorial Sloan-Kettering Cancer
        Center                         9/12/89

        Memorial Sloan-Kettering Cancer
        Center                         9/24/92

        University of Alabama at
        Birmingham                     6/24/92

        Johns Hopkins Univ. School
        of Medicine                    8/17/93

        Walter Reed Army Institute
        of Research                    6/7/91

        State Veterinary Inst. for Virus 
        Research                       6/25/91

        MedImmune, Inc.                2/3/94

        Therion Biologics              8/26/94

        Max-Planck Institute           5/20/94

        Dartmouth Medical School       5/23/94

        Britsh Bio-Technology          6/6/94

        Novo Nordisk A/S               NDA - 10/29/92

        St. Louis University School
        of Medicine                    3/22/94

        New York Univ. School
        of Medicine                    5/11/95


                                       - 7 -<PAGE>




        NCI-NIH                        9/12/94

        UCLA                           4/3/95

        US Army Inst. of Research      11/4/94

        New York Medical College       10/17/94

        NIAID-NIH                      4/6/95

        Newcastle Mater Hospital,
        Australia                      4/4/95

        Johns Hopkins Univ.            6/20/94

        Univ. of California - Irvine   6/14/94

        Roswell Park Cancer Institute  7/27/95

        Harvard School of Public
        Health                         11/14/94

        Thomas Jefferson Univ. Medical
        School                         3/21/95

        MD Anderson Cancer Ctr, Univ.
        of Texas                       12/20/95

        NIAID-NIH                      4/6/95

        Univ. of Rochester             4/6/95

        Univ. of Virginia              7/27/95

        Dana Farber Cancer Institute

        The Immune Response
        Corporation                    2/13/95

        Hawaii Biotechnology Group     3/17/95

        Georgia State University       3/30/95

        PHRI, New York, NY             6/29/95

        MicroCarb                      1/16/95

        National Cancer Institute-NIH  8/31/94

        Tulane Univ. Medical Center    11/28/94

        New Jersey Medical School      10/24/94

        Wishard Memorial Hospital      10/14/94

                                       - 8 -<PAGE>




        Univ. of Tennessee Medical
        Center                         4/19/95

        Int'l Center for Med. Res. & 
        Training - Columbia            11/2/95

        der Technischen Universitat
        Munchen - Germany              6/6/95

        National Institutes of Health  7/27/95

        Montana State Univ.            7/27/95

        Fox Chase Cancer Center        11/28/95

        University of London - England 10/18/95

        M. D. Anderson Cancer Center, 
        Univ. of Texas                 8/25/95

        Statens Seruminstitut -
        Denmark                        12/7/95

        Frederick Cancer Research & 
        Development Center - NCI       10/26/95 

        Universidad Nacional de
        Colombia                       8/4/95

        Queen Elizabeth II Medical
        Center                         12/1/95

        Ludwig Institute for Cancer Research

        National Institute of Allergy & 
        Infectious Diseases - NIH      8/24/95

        Yale University                8/9/95

        University of Newcastle        12/7/95


                                       Description
        DIAGNOSTIC AGREEMENTS          Date Signed                  

        Pasteur Merieux Serum and      Termination Agrmnt 12/14/90 
        Vaccines S.A.








                                       - 9 -<PAGE>




        Diagnostic Agreements          Description
        General                        Date Signed                  

        MIT Development Corporation    Nondisclosure Agmt. - 11/19/91

        Ortho/Chiron/CBC               Material Transfer Agmt. - 6/10/93
                                       and any amendts and all associated
                                       agmts. referrenced therein 

        Gary Pearson and Biotech Research 
        Laboratories, Inc.             Agreement - 9/20/87          

        Sienna Biotech Inc.            Option Agmt. - 11/12/92

        Univ. of Alabama at            Contract Services Agmt. - 11/18/92
        Birmingham

        The Regents of the Univ.
        of California                  7/30/93

        The Regents of the Univ.
        of California                  10/26/84


                                       Description
        Miscellaneous                  Date Signed                  

        Sepragen Corp.                 10/2/92

        Actigen Incorporated           9/7/93

        BioChem ImmunoSystems          3/25/93

        Children's Hospital            5/14/93

        CSL Limited                    3/18/93

        Diamond Associates             11/17/93

        Direct Access Diagnostics      11/10/93

        Empyrean Diagnostics, Inc.     11/29/93

        Hunneman Commercial Company    11/5/93

        Immunetics, Inc.               9/24/93

        NYU Medical Center             4/6/93

        Serex International, Inc.      4/30/93

        University of Alabama at
        Birmingham                     9/9/93


                                      - 10 -<PAGE>




        University of Pennsylvania     2/24/93

        University of Pennsylvania     3/16/93

        Boston BioMedical Consultants  2/28/94

        Ciba Corning Diagnostics
        Corporation                    2/9/94

        Genelabs Diagnostics Ptd. Ltd  2/15/94

        Meridian Diagnostics, Inc.     6/27/94

        Riverside Partners             6/29/94

        Therion Biologics Corporation  4/15/94

        Tulane University Medical
        Center                         6/22/94

        Wampole Laboratories           6/27/94


                                       Description
        ADI                            Date Signed                  

                                       Stock Purchase and Transfer
                                       Agreement btwn CBC and Bio Mira
                                       Inc.- 2/28/94 
                                       Transfer Agmt. between CBC and 
                                       ADI Diagnostics, Inc. - 2/28/94



        Post Petition Contracts        
        SIGNED AGMTS FROM JULY 7, 1994 Description
        FORWARD                        Date Signed                  

        Alexon                         8/4/94

        Amvax, Inc.                    7/15/94

        Anonymous Test Services, Inc.  9/12/94

        BASF Bioresearch Corporation   12/13/94

        Becton Dickinson Microbilogy Systems 
        (Div.of Bec. Dick. & Co)       11/1/94

        Biochem Pharma Inc.            8/30/94

        Bio-Rad Laboratories, Inc.,    10/17/94



                                      - 11 -<PAGE>




        Boehringer Mannheim
        International SA               9/23/94

        Boston Biomedica, Inc.         7/25/94

        Capricorn Products             7/14/94

        Capricorn Products             7/24/94

        ChemTrak                       9/20/94

        Ciba Corning Diagnostics
        Corporation                    9/20/94

        Department of Health & Human
        Services                       8/30/94

        Department of Health & Human
        Services                       8/30/94

        Department of The Army         11/10/94

        Dynagen, Inc.                  9/22/94

        F.J.D. Enterprises, Inc.       11/18/94

        Focus/MRL, Inc.                9/28/94

        Genzyme Diagnostics            9/23/94

        Grayson & Associates           9/16/94

        Gull Laboratories              8/31/94

        Harvard University School of
        Public Health                  11/14/94

        Hemagen Diagnostics, Inc.      7/27/94

        Manuso, Alexander &
        Associates, Inc.               10/18/94

        Medicorp Inc.                  7/26/94

        Dr. Frans W.H.M. Merkus        10/29/94

        Microcarb, Inc.                10/7/94

        Microbiology Reference
        Laboratory                     9/6/94

        Organon Teknika Corporation    12/15/94

        Quidel                         8/30/94

                                      - 12 -<PAGE>




        Roche Diagnostics              7/12/94

        Sanofi Diagnostics Pasteur,
        Inc.                           10/13/94

        S R Technologies, Inc.         9/26/94

        Syva Company                   7/22/94

        T. Cell Sciences, Inc.         8/9/94

        Allergenics, Inc.              12/19/95

        Alcon Laboratories, Inc.       7/21/95

        Allen & Company Incorporated   2/2/95

        Alza Corporation               7/10/95

        Alza Corporation               11/20/95

        American Cyanamid Company      10/2/95

        American Standard Inc.         6/26/95

        Analytical Biosystems          1/25/95

        Auerbach, Pollak & Richardson,
        Inc.                           7/17/95

        BancBoston State Street Investor 
        Services                       10/1/95

        Benchmark Consulting Group,
        Inc.                           8/10/95

        BioMerieux Vitek               5/3/95

        Booth, Melvin D.               2/9/95

        Boston Biomedica, Inc.         5/16/95

        Boston University School of
        Medicine                       11/8/95

        Calypte Biomedical             3/4/95

        Centers for Disease Control    4/17/95

        Chemsyn Science Laboratories   10/24/95

        Clinetics Corporation          9/29/95

        Clinetics Corporation          12/28/95

                                      - 13 -<PAGE>




        Davos Chemical Corp./ 
        Plasto SA (Synkem Division)    12/21/95

        Davos Chemical Corp./Separex 
        Division Chromatographie       10/23/95

        Diamedix Corporation           8/17/95

        Fox Chase Cancer Center        11/14/95

        Fox Chase Cancer Center        11/14/95

        Genzyme Diagnostics            2/1/95

        Great American Insurance Co.   3/15/95

        Intracel Corp.                 7/14/95

        Klaud, Stephen                 4/7/95

        Lane, Richard J.               2/9/95

        Levy, Nelson L.                1/6/95

        Macrochen Corporation          12/12/95

        MedTech Capital                8/10/95

        Mehta and Isaly                9/22/95

        Michelene Powers               3/22/95

        MicroCarb, Inc.                1/16/95

        National Cancer Institute      9/29/95

        National Institutes of Health  10/13/95

        Nelson, John                   4/5/95

        NERAC, Inc.                    12/19/95

        The Ohio State University      12/20/95

        Organon Teknika Corporation    1/24/95

        Pharmacia Inc.                 10/16/95

        Pharmakon Research 
        International, Inc.            12/19/95

        Pharm-Eco Laboratories, Inc.   11/15/95

        Poorman-Douglas                9/20/95

                                      - 14 -<PAGE>




        Presidio Life Sciences Group   8/31/95

        Prochrom Lab                   2/14/95

        REAADS Medical Products, Inc.  8/7/95

        SAF Bulk Chemicals             10/23/95

        Sanborn, Henry N.              4/7/95

        Scheer Partners, Inc.          5/17/95

        Scheer Partners, Inc.          8/1/95

        Scumaci, Robert F.             2/22/95

        Selfcare, Inc.                 6/28/95

        Separex Division Chromatographie/ 
        Davos Chemical Corp.           10/23/95

        Seradyne, Inc.                 6/30/95

        Stanford University School of 
        Medicine/Perimmune, Inc.       6/23/95

        Strategic Diagnostics Inc.     9/5/95

        Statens Seruminstitut          11/30/95

        Statens Seruminstitut          11/30/95

        Sullivan, Charles              4/7/95

        Svrluga, Richard               1/6/95

        TM Capital Corp.
        (Michael Goldman)              6/16/95

        TSI Washington Laboratories    3/13/95

        U.S. Army Medical Research Insitiute 
        of Infectious Diseases         10/27/95 

        University of Newcastle        12/7/95

        University of Newcastle        11/30/95

        University of Texas            8/23/95

        University of Texas            8/25/95

        Walter Reed Army Institute
        of Research                    10/21/95

                                      - 15 -<PAGE>




        Whitlow, M. Blanton            1/6/95

        WHO Collaborative Center for 
        Rickettsial Reference and
        Research                       11/6/95 

        WHO Collaborative Center for 
        Rickettsial Reference and
        Research                       10/31/95 

        Willis Cornoon Corp. of Mass   3/15/95

        Allergenics, Inc.              1/15/96

        Bayer Diagnastics              2/19/96

        Carter-Wallace, Inc./Immune
        Probe Inc.                     1/19/96

        Carter-Wallace, Inc./JDL
        Associates                     1/19/96

        IncStar Corporation            1/9/96

        Ohio State University          1/29/96

        Perlmmune, Inc.                1/2/96

        Perlmmune, Inc.                1/2/96

        Pharmakon Research
        International, Inc.            1/25/96

        Remel Limited Partnership      1/19/96

        UF/USAD/SADC Heartwater Research 
        Project, Veterinary Research
        Lab                            1/29/96                      

        UF/USAD/SADC Heartwater Research 
        Project, Veterinary Research
        Lab                            1/24/96                      

        Unisyn Technologies, Inc.      2/14/96

        U.S. Naval Medical Research 
        Unit, No. 3                    2/21/96

        U.S. Naval Medical Research 
        Unit, No. 3                    2/21/96

        The University of Alabama at
        Birmingham                     1/19/96


                                      - 16 -<PAGE>




        The University of Alabama at
        Birmingham                     1/19/96

        Viral and Rickettsial Disease
        Laboratory                     1/4/96

        Diatech Diagnostics            3/12/96

        Microbiological Associates,
        Inc.                           Agmt. No. 2311 2/29/96

        Naples, John                   Letter Agmt. 1/23/96

        Swigs Tropical Institute       Agmt. - 1/119/96 and 2/22/96

        Carter-Wallace, Inc.           Asset Purchase Agreement dated as 
                                       of 5/1/96 and related Escrow
                                       Agreement and Supply Agt.

        Meridian Diagnostics, Inc.     Asset Purchase Agreement - 6/24/96
                                       and related Supply Agmt. and Escrow
                                       Agmt.

        Advanced BioScience
        Laboratories, Inc.             5/21/96

        Advanced BioScience
        Laboratories, Inc.             5/21/96

        Bergen Community Regional
        Blood Center                   4/25/96

        bioMerieux Vitek/Aquila
        Biopharmaceuticals             4/4/96

        bioMerieux Vitek, Inc.         5/23/96

        Calypte Biomedical
        Corporation                    4/12/96

        Calypte Biomedical
        Corporation                    4/12/96

        Carter-Wallace, Inc.           5/3/96

        Cottingham, Hugh               5/3/96

        Diatech Diagnostics, Inc.      3/12/96

        Eisenwinter, Ronald Keith      5/18/96

        Hale and Dorr                  4/11/96



                                      - 17 -<PAGE>




        Institut Fur Med. Mikrobiologie
        and Hygiene, Der Technischen
        universitat Munchen            4/9/96

        Kemp Biotechnologies           5/20/96

        Knox College                   4/4/96

        Knox College                   4/4/96

        Mallinckrodt Veterinary, Inc.  3/20/96

        Mallinckrodt Veterinary, Inc.  5/15/96

        Mallinckrodt Veterinary, Inc.  5/15/96

        New York Medical College       5/3/96

        Prochrom, Inc.                 5/1/96

        Statistics Unlimited, Inc.     5/13/96

        Stroock & Stroock & Lavan      5/3/96

        Swiss Tropical Institute       3/18/96

        University of Massachusetts
        - Lowell                       5/16/96

        University of Washington       4/1/96

        Viral Technologies, Inc.       4/26/96



        Employmee                      Description
        Confidentiality Agreements     Date Signed                  

        Amsden, Jennifer A.            11/1/93

        Anderson, Christine A.         12/18/90

        Anderson, David A.             12/11/91

        Anderson, Robert C.            7/24/89

        Austin-Ritchie, Tammy L.       10/30/94

        Ayers, June G.                 9/17/90

        Balkovic, Edward S.            11/1/93

        Baronouskas, Loriann           8/14/95


                                      - 18 -<PAGE>




        Barbon, Jeffrey                9/26/95

        Barbosa, Arnoldo               3/13/95

        Barton, Sandra L.              8/3/92

        Beaver, Jeffrey T.             6/20/94

        Beltz, Gerald A.               8/18/83

        Bille, Curtis G.               1/14/93

        Bagosian, Laura A.             4/24/87

        Breen, Susan                   2/8/94

        Bulger, Patrice A.             11/2/87

        Caron, Jr., Kenneth A.         11/25/91

        Cassaneli, Paula A.            3/6/89

        Chan, Teresa H.                6/24/91

        Chiavoloni, Jose R.            11/28/89

        Chin, Rena S.L.                10/28/91

        Chioda, John P.                10/31/89

        Cloufier, Penny A.             10/8/85

        Conrad, David I.               2/14/95

        Cooper, Jeff K.                4/25/89

        Corbo, Joanne                  10/19/92

        Corey, Maria P.                3/10/95

        Coughlin, Richard T.           4/11/87

        Cox, Daniel E.                 9/27/89

        Cusson, Nancy A.               8/8/88

        Davis, Kathryn R.              6/15/92

        Dean, Angela K.                12/15/87

        Denogean, Luis Alex            3/14/95

        Dixson, Mark S.                3/29/93


                                      - 19 -<PAGE>




        Duncan, Cynthia E. Brown       3/1/95

        Dvorak, Gillian I.             6/29/87

        Ekinci, Fatma J.               4/1/92

        Enyim, Koff                    8/19/91

        Feigelman, Rhonda E.           12/7/92

        Finn, Mary                     2/1/90

        Foxhan, Daniel P.              3/10/94

        Foulkrod, Paul, M.             8/22/94

        Freeman, Bente                 7/24/89

        Fumonavicius, Maria C.         7/10/94

        Gagne, Linda L.                11/17/89

        Ganley, Mellyn                 10/2/95

        Gallagher, Kathleen E.         2/28/94

        Gardner, Bonnie H.             9/18/89

        Gilles, David W.               1/14/94

        Gingrich-Hicker, Cindy A.      3/23/87

        Grabbe, Deborah B.             4/14/93

        Green, Karen T.                10/15/87

        Greer, Cynthia A.              9/24/87

        Hallaron, Paul F.              10/16/89

        Harte, Karen M.                8/27/89

        Hawthorne, Rita L.             4/15/91

        Hay, Stephen                   10/23/95

        Hoang, Han Viet                ????

        Hogan, Cheryl M.               2/28/94

        Hollender, Norma A.            1/3/95

        James, Duane L.                5/30/91


                                      - 20 -<PAGE>




        Kammer, Robert                 5/18/93

        Kashala, Lukemena O.           8/23/92

        Kelly, Jr., Thomas H.          1/31/92

        Kensil, Charlotte A.           12/5/85

        Kilmer, Richard H.             1/31/95

        Kissiday, Stephanie            5/4/87

        Kohl, John H.                  3/1/93

        Kozberg, Patricia M.           6/13/89

        Lachapelle, Nelson             12/26/95

        Larkham, Louie                 8/4/95

        Lazarus, Gary                  11/30/95

        Listenwilk, Suzel D.           8/13/93

        Li, Joice X.                   4/19/95

        Long, Gary E.                  3/23/89

        Lord, John A.                  8/29/92

        Mard, Shawn                    1/15/96

        Marshall, Jay R.               5/25/93

        Mason, Lori J.                 9/15/89

        Meenan, Karen F.               7/14/92

        Melady, Wendy A.               2/17/89

        Mesale, Jr., Albert D.         12/12/88

        Munroe, Kenneth J.             11/12/90

        Murphy, Cheryl J.              6/25/87

        Murphy, Matthew R.             3/23/93

        Nelson, Rosemary               7/6/95

        Obeg, Mark P.                  ??????

        Odom, Kevin A.                 4/14/93


                                      - 21 -<PAGE>




        Osowski, Barbara J.            12/6/91

        Oslowski, Jean                 12/12/87

        Packard, Kevin M.              2/21/95

        Parousis, Christina            3/9/92

        Parousis, Christos             4/18/94

        Percorelli, Marlee             3/6/95

        Pelken, Loreta M.              ???

        Pelletier, James R.            4/1/91

        Plume, Sharry A.               6/13/88

        Quinn, William P.              3/23/92

        Radcliff, Wilfred              9/28/89

        Rarick, RIsa Marie             11/30/94

        Recchia, Joanne                11/1/86

        Reidy, Thomas J.               11/22/93

        Richert, Linda A.              4/12/94

        Rich, Linda E.                 2/16/95

        Robert, Roxanne M.             7/30/90

        Robinson, Lisa M.              11/10/93

        Seals, Jonathan R.             7/16/87

        Shaffer, Douglas J.            6/17/91

        Sillman, Deborah               3/3/93

        Simms, Karen E.                9/27/89

        Soltysik, Sean                 9/13/90

        Stone, Carol A.                4/6/87

        Storey, James R.               7/29/84

        Sullivan, Debra Lee            1/3/95

        Tounton-Rigby, Alison          4/6/95


                                      - 22 -<PAGE>




        Warren, Susan P.               2/13/89

        Weissman, Bruce A.             3/14/95

        Wendler, Paul B.               9/6/90

        Wheeler, Deborah A.            8/14/91

        Wheeler, James J.              10/31/94

        White, Abbie C.                5/23/89

        Wilson, Mary-Jane              8/12/87

        Wu, Jia-Yan                    7/22/89








































                                      - 23 -





                                     EXHIBIT J

                              SUMMARY OF STOCK PLANS


             1996 Stock Award and Option Plan.  The first plan is a new
        1996 Stock Award and Option Plan (the "Employee Plan") to replace
        the previously existing CBC plan.  The purposes of the 1996 Plan,
        which is substantially similar to the prior CBC plan, are to
        provide long-term incentives and rewards to those key employees of
        Aquila and its subsidiaries and any other persons who are in a
        position to contribute to the long-term success and growth of
        Aquila and its subsidiaries, to assist Aquila in retaining and
        attracting executives and key employees of requisite experience
        and ability and to associate more closely the interests of such
        executives and key employees with those of Aquila's stockholders.

             Under the Employee Plan, Aquila may grant (i) options
        intended to qualify under Section 422 of Code as incentive stock
        options, (ii) other options which are not qualified as incentive
        stock options ("nonqualified stock options"), (iii) Stock
        Appreciation Rights, either alone or in tandem with options
        ("SARs"), (iv) discounted stock options, (v) deferred stock
        awards, and (vi) restricted stock awards.  Incentive stock options
        may only be granted to persons who are employees of Aquila at the
        time of grant, which may include officers who are also employees.
        All of the other types of options and awards may be granted to
        persons who are officers or employees of Aquila are eligible for
        incentive stock options and they are approximately fewer than 5
        consultants are eligible for other options and awards under the
        Employee Plan.

             Administration of the Employee Plan will be delegated by the
        Board of Directors to the Compensation Committee.  Subject to the
        terms of the Employee Plan, the Compensation Committee will
        determine the persons to whom options or awards are granted, the
        number of shares covered by the option or award, the term of any
        option or award and the time during which any option is
        exercisable.  In the discretion of the Compensation Committee,
        options or shares acquired by exercise of an option may be
        forfeitable if the recipient does not continue as an employee of
        Aquila for a specified period.

             Incentive stock options under the Employee Plan may not be
        granted after ten years after the Consummation Date and may not be
        exercised subsequent to ten years from the date of grant (five
        years after the date of grant for incentive stock options granted
        to holders of more than 10% of Aquila's New Common Stock).

             No incentive stock option granted pursuant to the Employee
        Plan may be exercised more than three months after the option
        holder ceases to be an employee of Aquila, except that in the
        event of death or permanent and total disability of the option<PAGE>




        holder, the option may be exercised by the holder of his estate
        for a period of up to one year after the date of such death or
        permanent and total disability.

             Discounted stock options may be granted at an exercise price
        equal to a stated percentage of the fair market value of the New
        Common Stock on the date of the grant, in the discretion of the
        Compensation Committee.  Incentive stock options and non-qualified
        stock options may not be granted at less than the fair market
        value of the New Common Stock, and incentive stock options may be
        granted to those persons holding more than 10% of the New Common
        Stock only at an exercise price of at least 110% of the fair
        market value of the New Common Stock on the date of grant.

             In order to assist an optionee in the acquisition of shares
        of New Common Stock pursuant to the exercise of an option granted
        under the Employee Plan, the Compensation Committee may authorize
        payment (i) in cash, (ii) by delivery of shares of New Common
        Stock having a fair market value equal to the purchase price of
        the shares, (iii) by the exercise of SARs, or (iv) any combination
        of the foregoing or any other means the Compensation Committee
        approves.

             A total of 2,000 shares of New Common Stock will be available
        for issuance under the Employee Plan (subject to adjustment for
        any recapitalization, reclassification, stock split, stock
        combination, stock dividend or certain other corporate
        reorganizations).  The shares issued may include either authorized
        but unissued shares of New Common Stock or treasury shares.
        Shares subject to any option that ceases to be exercisable for any
        reason will be available for subsequent option grants.  Options or
        awards that will be granted under the Employee Plan in the future
        are not presently determinable.

             The Board of Directors may amend, suspend or terminate the
        Employee Plan; provided, however, that without stockholder
        approval, neither the Board of Directors nor the Compensation
        Committee may modify the Employee Plan to increase the number of
        shares available for issuance, change the class of persons
        eligible to receive awards, or make any other modification
        requiring the approval of the stockholders under Section 424 of
        the Internal Revenue Code for incentive stock options or under
        Rule 16b-3 under the Securities Exchange Act of 1934 in order to
        continue to qualify for exemption under that rule.

             1996 Director Stock Award and Option Plan.  The second plan
        in a 1996 Director Stock Award and Option Plan (the "Directors
        Plan").  The purpose of the Directors Plan is to attract and
        retain the services of experienced and knowledgeable directors of
        Aquila for the benefit of Aquila and its stockholders and to
        provide additional incentives for such independent directors to
        continue to work for the best interests of Aquila and its
        stockholders through continuing ownership of the New Common Stock.


                                       - 2 -<PAGE>




             Under the Directors Plan, Aquila may grant the same types of
        awards, subject to the same limitations as are described above
        under the Employees Plan, except that SARs under the Directors
        Plan may only be granted during a ten day period beginning on the
        third business day following release of annual or quarterly
        earnings reports and SARs may not be settled earlier than six
        months after the date of grant.

             Each director of Aquila or any of its subsidiaries (presently
        four persons) will be eligible to receive awards under the
        Directors Plan, although only directors who are also employees
        (one person) will be eligible for incentive stock options.

             Under the Directors Plan, each eligible director will receive
        an initial grant on or about the Initial Distribution Date, one-
        fourth vesting on that date and an additional one-fourth vesting
        on each of the next three anniversaries thereafter.  Directors
        will also receive an annual automatic grant of an option for up to
        2,500 shares on the 1st day of July, at fair market value on the
        date of the grant.

             A total of 200,000 shares of New Common Stock has been
        reserved for issuance under the Directors Plan (subject to
        adjustment for any recapitalization, reclassification, stock
        split, stock combination, stock dividend or certain other
        corporate reorganizations).  The shares issued may include
        treasury shares, authorized but unissued shares, and shares
        previously reserved for issuance upon exercise of options which
        have expired or terminated.  Shares subject to an option that
        ceases to be exercisable for any reason will be available for
        subsequent option grants.

             The Board of Directors may amend, suspend or terminate the
        Director Plan; provided, however, that without stockholder
        approval, neither the Board of Directors nor the Compensation
        Committee may modify the Directors Plan to increase the number of
        shares available for issuance, change the class of persons
        eligible to receive awards, decrease the exercise price of
        options, or materially increase benefits in any manner requiring
        the approval of the stockholders under Section 424 of the Internal
        Revenue Code for incentive stock options or under Rule 16b-3 under
        the Securities Exchange Act of 1934 in order to continue to
        qualify for exemption under that rule.

             1996 Employee Stock Purchase Plan.  The third Plan is a 1996
        Employee Stock Purchase Plan (the "Stock Purchase Plan").  The
        Stock Purchase Plan is intended to provide employees of Aquila
        with additional incentives by permitting them to acquire a
        proprietary interest in Aquila through the purchase of shares of
        Aquila's New Common Stock.  The Stock Purchase Plan will be
        administered by the Compensation Committee.  

             The Stock Purchase Plan provides that all employees of Aquila
        (including officers and directors) who work more than twenty hours

                                       - 3 -<PAGE>




        per week and more than five months in any calendar year who are
        employed on or before the first day of the applicable Purchase
        Period are eligible to participate.  However, no employee who
        holds five percent (5%) or more of the total combined voting power
        of Aquila's capital stock will be eligible to participate.  At
        present, approximately 56 persons are eligible to participate in
        the Stock Purchase Plan.  Further, no employee may be granted an
        option pursuant to which the employee's right to purchase New
        Common Stock under the Stock Purchase Plan accrues at a rate which
        exceeds $25,000 of fair market value of such stock per year.

             An eligible employee of Aquila may elect to participate in
        the Stock Purchase Plan by giving notice to Aquila and instructing
        Aquila to withhold a specified amount equal to a whole percentage
        of his or her Compensation from the employee's salary during the
        following "Purchase Period", running from a date specified by the
        Compensation Committee within the first fifteen days of January
        and ending twelve months later.  On the last business day of the
        Purchase Period, the amount withheld will be used to purchase New
        Common Stock at a price equal to the lesser of 85% of the fair
        market value of the New Common Stock on either the first day (the
        "Date of Offering") or on the last day of the Purchase Period,
        whichever is less (the "Option Exercise Price").  For this
        purpose, fair market value is the public market price, if any, or
        a value determined in good faith by the Board of Directors.
        Aquila technically will grant an option to each participant on the
        Date of Offering, to purchase, on the last day of the Purchase
        Period, at the Option Exercise Price, that number of shares of New
        Common Stock that his or her accumulated payroll deductions on the
        last day of the Purchase Period will pay for at such price with a
        maximum number of shares equal to three times the number of shares
        calculated by dividing the estimated contribution amounts during
        the Payment Period by fair market value of the New Common Stock on
        the first day of the Payment Period.  The option is automatically
        deemed to be exercised if the employee is still a participant on
        the last day of the Purchase Period.  Participation will end
        automatically on termination of employment with Aquila.

             A participating employee may authorize a payroll deduction of
        an even percent (i.e., 1%, 2%, etc.), equal to not more than ten
        percent (10%) of his or her Compensation (defined as the rate of
        salary in effect for an employee on the Date of Offering).
        Deductions from any employee's Compensation may not be increased
        or decreased during a Purchase Period.

             An employee may withdraw from the Stock Purchase Plan, and
        withdraw all of the payroll deductions credited to his or her
        account under the Stock Purchase Plan, at any time prior to the
        last regular payroll deduction of any Purchase Period.  Aquila
        will refund without interest the entire remaining balance of the
        Employee's deductions.

             The maximum number of shares of New Common Stock which may be
        purchased by employees under the Stock Purchase Plan is 200,000

                                       - 4 -<PAGE>




        shares (subject to adjustments for stock splits, stock dividends
        and similar transactions).  Such shares may be authorized but
        unissued shares of New Common Stock or shares of New Common Stock
        reacquired by Aquila, including shares purchased in the open
        market.

             The Stock Purchase Plan may be amended by the Board of
        Directors from time to time in any respect; provided, however,
        that without stockholder approval no amendment shall be effective
        to increase the number of shares under the plan, decrease the
        purchase price per share other than as provided in the plan,
        withdraw administration from the Committee, or change the
        subsidiaries eligible to participate.

             The Stock Purchase Plan is intended to qualify as an
        "employee stock purchase plan" under Section 423 of the Internal
        Revenue Code.  Provided that certain conditions are met, an
        employee will not recognize income on the grant or exercise of an
        option under the Stock Purchase Plan, and Aquila will not have a
        deduction.



































                                       - 5 -




                          UNITED STATES BANKRUPTCY COURT
                         FOR THE DISTRICT OF MASSACHUSETTS

                                         
                                         )
        In re:                           )      Chapter 11
                                         )
        CAMBRIDGE BIOTECH CORPORATION,   )      Case No. 94-43054-JFQ
                                         )
             Debtor                      )
                                         )

                 MOTION OF CAMBRIDGE BIOTECH CORPORATION PURSUANT
                    TO SECTION 1127 OF THE BANKRUPTCY CODE AND
          FED. R. BANKR. PROC. 3019 FOR APPROVAL OF MODIFICATIONS TO PLAN

             Cambridge Biotech Corporation, debtor and debtor-in-

        possession ("CBC"), submits this motion with respect to certain

        modifications (as set forth below) (the "Modifications") to

        Amended (May 17, 1996) Reorganization Plan of Cambridge Biotech

        Corporation as Further Amended As of May 20, 1996 (the "Plan").

        Because the Modifications do not adversely change the treatment of

        the claim of any creditor or the interest of any equity security

        holder, CBC requests that the Court find and order the

        Modifications deemed accepted by all creditors and equity security

        holders who have previously accepted the Plan.  As grounds

        therefore and in support thereof, CBC states as follows:

             1.   CBC has filed the Plan with the Court, and the

        Disclosure Statement with respect to Amended (May 17, 1996)

        Reorganization Plan of Cambridge Biotech Corporation as Further

        Amended As of May 20, 1996 ( the "Disclosure Statement"), was

        approved by the Court in all respects on or about May 17, 1996

        (the "Disclosure Statement Approval Order").






                                       - 1 -<PAGE>




             2.   Pursuant to the Disclosure Statement Approval Order, the

        Disclosure Statement (and Plan) were mailed to, among others, all

        holders of Claims and Interests.  The Plan was overwhelmingly

        accepted by all impaired Classes of creditors and equity security

        holders, with the exception of Class 4 (Non-Convenience Class

        General Unsecured Claims).  The Court has scheduled a confirmation

        hearing on the Plan for July 15, 1996.



             3.   Since the Disclosure Statement was mailed, CBC has had

        continuing negotiations with the Equity Committee in an effort to

        resolve the Equity Committee's objections to the Plan.  Moreover,

        CBC has reviewed the Plan and determined that certain

        modifications are necessary to correct scrivenor`s errors and

        clarify certain issues including, without limitation, in

        connection with corporate mechanics of the stock exchange between

        CBC and Aquila Biopharmaceuticals, Inc. ("Aquila") and the

        mechanics of the Rights Offering which is a part of the Plan.

        None of the Modifications modify the Plan so that it fails to meet

        the requirements of Sections 1122 and 1123 of the Bankruptcy Code.

        Accordingly, pursuant to Section 1127(a) of the Bankruptcy Code,

        upon CBC's filing of this motion (with the Modifications), the

        Plan, as modified, becomes the Plan.

             A.   Amendments to the Plan

                  Amend the Plan as follows:

             1.   Amend Article I.B.7 to read:

                  7.  "Aquila Certificate of Incorporation" means Aquila's

             amended and restated certificate of incorporation in effect


                                       - 2 -<PAGE>




             under the laws of the State of Delaware substantially in the

             form attached as Exhibit B-1 hereto.

             2.   Amend Article I.B.32 to read:

                  32.  "Disbursing Agent" means the Person(s) designated

             by CBC to serve as Disbursing Agent under Section VII of the

             Plan.  CBC may designate Aquila as Disbursing Agent.  The

             Disbursing Agent shall be deemed to include The First

             National Bank of Boston in its capacity as the transfer

             agent, exchange agent, rights agent, warrant agent, registrar

             or any similar function for either CBC or Aquila.

             3.   Amend Article I.B.36 to read:

                  36. "Eligible Rights Holder" means a holder of Rights

             (or in the case of Rights held in street name, each

             beneficial owner) who has subscribed for all of the Units to

             which he is entitled under his basic Rights.

             4.   Amend Article I.B.67 to read:

                  67. "Record Date" means the record date for purposes of

             making distributions under the Plan to holders of Old Common

             Stock on account of Allowed Interests, which date shall be

             the Consummation Date.

             5.   Amend the third sentence of the first paragraph of

             Article IV.E.1 to read:

                  In addition, each holder of a Right (or in the case of

             securities held in street name, each beneficial owner) who

             has fully exercised his basic Right to purchase one Unit for

             each Right received (an "Eligible Rights Holder") also has

             the right to purchase any desired number of Units that have


                                       - 3 -<PAGE>




             not been subscribed for by the holders of other Rights (the

             "Oversubscription Rights"), subject to proration if

             oversubscribed.

             6.   Amend Article IV.F by adding the following to the end

             thereof:

                  John Nelson and Elliot Hillback shall serve as Class I

             Directors; Alison Taunton-Rigby shall serve as a Class II

             Director; and Jeffrey Beaver shall serve as a Class III

             Director (as such Classes are described in the Aquila

             Certificate of Incorporation).  The Aquila Board of Directors

             shall appoint as a fifth director Mr. Keith J. Dorrington, a

             candidate nominated by the Equity Committee, who shall serve

             as a Class III Director.  Mr. Dorrington shall be one of the

             members of the Nominating Committee established under the

             Aquila By-Laws.

                  7.   Amend the second sentence of the second paragraph

             of Article IV.I to read:

                  On the Consummation Date, the Old Common Stock Interests

             shall be transferred to Aquila in exchange for the interests

             in Aquila to which Class VI Claimants are entitled under this

             Plan and Reorganized CBC shall issue a single certificate for

             100 shares of common stock (which shall constitute all

             outstanding capital stock of Reorganized CBC) to Aquila, and

             the stock certificates for the Old Common Stock shall be

             deemed canceled and of no force and effect without further

             action on the part of the Bankruptcy Court or any Person.




                                       - 4 -<PAGE>




             8.   Amend the second sentence of the second paragraph of

             Article IV.I to read:

                  Pending such surrender, the certificates for the Old

             Common Stock shall be deemed canceled and shall represent

             only the right to receive the distributions to which the

             holder is entitled under the Plan.

             9.   Amend IV.I by adding the following to the end thereof:

                  On the Consummation Date, the certificates for the

             initial Aquila common stock held by CBC will be automatically

             canceled.

             B.   Certificate of Incorporation

                  Amend the Certificate of Incorporation of Aquila

             Biopharmaceuticals, Inc. which is Exhibit B-1 to the Plan as

             follows:

             10.  Amend Article FIFTH, Paragraph A, first paragraph, to

             change the number of shares of preferred or special stock

             authorized to be issued  from 1,500,000 to 5,000,000 shares.

             11.  Amend Article FIFTH, Paragraph C, the first clause of

             the first paragraph to read:

                  "Subject to any limitation prescribed by law or by

             Paragraph D of this Article FIFTHd Article FIFTH by adding a

             new Paragraph D to read as follows:

                  D.   Limitations on Issuance of Preferred Stock During

             Initial Period








                                       - 5 -<PAGE>




                  The authority of the board of directors to establish a

             class or series of preferred stock under Paragraph C above is

             subject to the following limitations:

                  (a)  Prior to the conclusion of the Initial Special

             Meeting described in Paragraph E of Article SIXTH, no class

             or series of preferred stock shall be established or shares

             thereof issued unless approved either (i) by a unanimous vote

             of the board of directors, or (ii) by vote of a majority of

             the shares of capital stock represented in person or by proxy

             at a meeting of stockholders.

                  (b)  From the conclusion of the Initial Special Meeting

             until the conclusion of the corporation's 1997 annual

             meeting, no class or series of preferred stock shall be

             established or shares thereof issued unless (i) if there are

             then five directors, it was approved by at least three

             directors, and (ii) if there are then six or seven directors,

             it was approved by a majority of the directors present and

             voting, including a majority of all of the "approved

             directors."  For purposes of this Paragraph D, an approved

             director means any director who either (i) was elected at the

             Initial Special Meeting or (ii) was nominated for director

             pursuant to Section IV.F of the Reorganization Plan (as

             defined below) by the Equity Committee defined in the

             Reorganization Plan.  The Reorganization Plan means Cambridge

             Biotech Corporation's reorganization plan confirmed by the

             Bankruptcy Court in the Chapter 11 proceeding filed by

             Cambridge Biotech Corporation in the United States Bankruptcy


                                       - 6 -<PAGE>




             Court for the District of Massachusetts, Case No. 94-43054-

             JFQ (the "Chapter 11 Case").

             13.  Amend the first sentence of Article SIXTH, Paragraph E,

             third paragraph, to read as follows:

                  The corporation shall call a special meeting of

             stockholders for the later of (i) December  15, 1996, or (ii)

             the  date which is  ninety (90) days after the Consummation

             Date  established pursuant to the Reorganization Plan, or if

             such date is not a business day, then on the next business

             day (the "Initial Special Meeting").

             14.  Amend the fourth paragraph of Article SIXTH, paragraph E

             by adding two additional sentences at the end thereof to read

             as follows:

                  The number of directors may not be increased to more

             than seven prior to the conclusion of the 1997 annual meeting

             of stockholders.  Any additional directors appointed by the

             board of directors or elected by stockholders prior to the

             1997 annual meeting of stockholders shall be "independent

             directors" as defined by the Council of Institutional

             Investors.

             15.  Amend the first line of Article SEVENTH, second

             paragraph, by adding the phrase "or Article SIXTH" after the

             word "law."

             16.  Amend Articles FIFTH, SIXTH, and NINTH to correct cross-

             references and conform defined terms as a result of the

             foregoing changes.




                                       - 7 -<PAGE>




             C.   Amendments to Bylaws

                  Amend the Bylaws of Aquila which are Exhibit B-2 to the

             Plan as follows:

             17.  Amend Article I, Section 10 to read as follows:

                  Section 10.    Action at Meetings.  When a quorum is

             present at any meeting, a plurality of the votes properly

             cast for election to any office shall elect to such office,

             and a majority of the votes properly cast shall decide any

             other question brought before such meeting, unless the

             question is one upon which by express provision (whether of

             law, the certificate of incorporation or these by-laws) a

             different vote is required, in which case such express

             provision shall govern and control the decision of such

             question.

             18.  Amend Article II, Section 1 to read as follows:

                  Section 1.     Number, Election, Tenure and

             Qualification.  The number of directors which shall

             constitute the whole board shall be not less than one.

             Except as otherwise fixed pursuant to the provisions of

             Articles FIFTH or SIXTH of the certificate of incorporation,

             the number of directors of the corporation shall be fixed by

             resolution duly adopted from time to time by the board of

             directors.  The directors, other than those who may be

             elected by the holders of any class or series of preferred

             stock, shall be classified, with respect to the term for

             which they severally hold office, into three classes, as

             nearly equal in number as possible as determined by the board


                                       - 8 -<PAGE>




             of directors.  Except as provided in Section 4 of this

             Article or Article SIXTH of the certificate of incorporation,

             the directors shall be elected at the annual meeting of the

             stockholders, and each director elected shall hold office

             until his successor is elected and qualified or until his

             earlier death, resignation or removal.  Directors need not be

             stockholders.

             19.  Amend Article II, Section 2 by adding to the beginning

             thereof the phrase, "Subject to the provisions of Article

             SIXTH of the Certificate of Incorporationd Article II,

             Section 3, first paragraph, first sentence, clause (a) by

             deleting the phrase "the board of directors or a subcommittee

             thereof" and inserting in lieu thereof the phrase "the

             nominating committee established pursuant to Section 14 of

             this Article II."

             21.  Amend Article II, Section 3, second paragraph, both the

             first and the last sentences thereof, by deleting the phrase

             "board of directors or a committee thereof" and inserting in

             lieu thereof the phrase "the nominating committee".

             22.  Amend Article II by renumbering Section 15 as Section 16

             and inserting a new Section 15 to read as follows:

                  Section 15.    Nominating Committee.  The board of

             directors shall appoint a nominating committee which shall be

             responsible for selecting the nominees of the board of

             directors for election as directors of the corporation.  The

             nominating committee shall consist of not less than three nor

             more than five members.


                                       - 9 -<PAGE>




             23.  Amend Exhibit F, the Rights and Warrants Agreement and

             the form of the Rights Certificate which is an exhibit

             thereto, to the extent required to conform to any of the

             foregoing amendments to the Plan.

             D.   Amendments to Plan Exhibits

                  Amend Exhibits G (Assumed Contracts) and I (Assumed and

             Assigned Contracts) to include those items listed on Exhibit

             A hereto (which generally represent additional post-petition

             contracts to be assumed by CBC and assigned to Aquila).

             4.   Because the Modifications do not adversely change the

        treatment of the claim of any creditor or the interests of any

        equity security holder, pursuant to Fed. R. Bankr. Proc. 3019, the

        Court should deem the Modifications accepted by all creditors and

        equity security holders who have previously accepted the Plan.

             WHEREFORE, CBC respectfully requests that the Court:

             1.   Enter an order in the form attached hereto finding that

        the Modifications do not adversely change the treatment of the

        claim of any creditor or the interest of any equity security

        holder and deeming the Modifications accepted by all creditors and

        equity security holders who have previously accepted the Plan; and

             2.   Grant to CBC such other relief as appropriate and just

        under the circumstances.












                                       - 10 -<PAGE>




        Dated:  July 15, 1996          Respectfully submitted,

                                       CAMBRIDGE BIOTECH CORPORATION,

                                       By its attorneys,


                                       
                                       Joseph F. Ryan
                                       Jeffrey L. Jonas
                                       Anthony L. Gray
                                       BROWN, RUDNICK, FREED & GESMER,
                                       P.C.
                                       One Financial Center
                                       Boston, MA  02111
                                       617-856-8200


        #497396 v1 - JONASJL - @nsk01!.DOC - 18017/1




































                                       - 11 -<PAGE>




                                     EXHIBIT A

                      (Additions to Exhbiits G and I to Plan)


        Agreements                                         Date     Cost
        to Cure

        Advanced BioScience Laboratories, Inc.            5/21/96     0
        Advanced BioScience Laboratories, Inc.            5/21/96     0
        Bergen Community Regional Blood Center            4/25/96     0
        bioMerieux Vitek/Aquila Biopharmaceuticals        4/4/96      0
        bioMerieux Vitek, Inc.                            5/23/96     0
        Calypte Biomedical Corporation                    4/12/96     0
        Calypte Biomedical Corporation                    4/12/96     0
        Carter-Wallace, Inc.                              5/3/96      0
        Cottingham, Hugh                                  5/3/96      0
        Diatech Diagnostics, Inc.                         3/12/96     0
        Eisenwinter, Ronald Keith                         5/18/96     0
        Hale and Dorr                                     4/11/96     0
        Institut Fur Med. Mikrobiologie und Hygiene,      4/9/96      0
         Der Technischen universitat Munchen       
        Kemp Biotechnologies                              5/20/96     0
        Knox College                                      4/4/96      0
        Knox College                                      4/4/96      0
        Mallinckrodt Veterinary, Inc.                     3/20/96     0
        Mallinckrodt Veterinary, Inc.                     5/15/96
        Mallinckrodt   Veterinary, Inc.                   5/15/96     0
        New York Medical College                          5/3/96      0
        Prochrom, Inc.                                    5/1/96      0
        Statistics Unlimited, Inc.                        5/13/96     0
        Stroock & Stroock & Lavan                         5/3/96      0
        Swiss Tropcial Institute                          3/18/96     0
        University of Massachusetts - Lowell              5/16/96     0
        University of Washington                          4/1/96      0
        Viral Technologies, Inc.                          4/26/96     0



        Any executory contracts entered into by CBC on or after 5/31/96
        (except that certain Agreement dated 6/9/96 with Direct
        Diagnostics which will be assumed but not assigned).













                                       - 12 -




                          UNITED STATES BANKRUPTCY COURT
                         FOR THE DISTRICT OF MASSACHUSETTS

                                         
                                         )
        In re:                           )      Chapter 11
                                         )
        CAMBRIDGE BIOTECH CORPORATION,   )      Case No. 94-43054-JFQ
                                         )
             Debtor                      )
                                         )


                       ORDER APPROVING MODIFICATIONS TO PLAN
                          PURSUANT TO SECTION 1127 OF THE
                   BANKRUPTCY CODE AND FED. R. BANKR. PROC. 3019


             On the Motion of Cambridge Biotech Corporation Pursuant to

        Section 1127 of the Bankruptcy Code and Fed. R. Bankr. Proc. 3019.

        For Approval of Modifications to Plan (the "Modification Motion"),

        after notice and hearing as appropriate under the circumstances,

        it is hereby FOUND, ORDERED, ADJUDGED and DECREED that the

        Modifications (as defined (and described) in the Modification

        Motion) do not modify the Plan (as defined in the Modification

        Motion) so that it fails to meet the requirements of Sections 1122

        and 1123 of the Bankruptcy Code and do not adversely change the

        treatment of the claim of any creditor or the interest of any

        equity security holder.  Accordingly, the Modifications are deemed

        accepted by all creditors and equity security holders who have

        previously accepted the Plan.



        Dated:                        July ____, 1996                    
                                      James F. Queenan
                                      United States Bankruptcy Judge




        #497398 v1 - JONASJL - @nsm01!.DOC - 18017/11

                                       - 1 -


                       CAMBRIDGE BIOTECH CORPORATION
                          (Debtor-In-Possession)
                        Consolidated Balance Sheets
                               (Unaudited)
                              (In Thousands)

Assets                               6/30/96       12/31/95       
                                     --------      --------
Current Assets:
  Cash and cash equivalents          $13,876       $ 6,856
  Restricted Cash                      1,000             0
  Marketable Securities                    0           216
  Accounts receivable                                                 
   -trade (net of allowance
    for doubtful accounts)             2,828         2,638
  Other receivables                      131           126
  Inventories                          4,856         4,368
  Prepaid expenses & other
    current assets                       455           695
                                      ------        ------
  Total Current Assets                23,146        14,899

Investments                              300             0

Property, plant, and equipment, 
  net                                  5,613         6,986
Patents and purchased 
  technology, net                        503         1,055
Other assets                             105           105
                                      ------        ------
Total Assets                        $ 29,667       $23,045
                                     =======       ======= 
Liabilities & Shareholders' 
  Equity

Current Liabilities:
   Accounts payable                 $    626           850
   Accrued royalties                     776         1,192
   Accrued professional fees           1,142           753
   Accrued incentive 
     compensation                      1,226         1,458
   Accrued restructuring costs           211           257
   Other accrued expenses              2,791         2,001
   Deferred revenue                    3,156           411
                                      ------         -----
    Total Current Liabilities          9,928         6,922
                                   
   Deferred Revenue                    1,879         2,287
                                                                
   Liabilities subject to                   
    Chapter 11 proceedings             9,886         9,880
                                      ------         -----
    Total Liabilities                 21,693        19,090

    Minority Interest                     10             9
    
    Shareholders' Equity:
       Preferred Stock, par value:
       $.01 per share, authorized:
       5,000,000 shares, none issued       0             0
      Common stock, par value: 
       $.01 per share, authorized: 
       40,000,000 shares, issued:                                         
       26,057,006 shares                 261           261
      Additional paid in 
        capital                      120,382       120,382
      Unearned compensation             (138)         (138)
      Deficit                       (112,541)     (116,559)
                                     -------       -------
    Total Shareholders'Equity          7,964         3,946
                                     -------         -----
    Total Liabilities and 
      Shareholder's Equity           $29,667       $23,045
                                     =======       ========

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















































                                     














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