MOLECULAR BIOSYSTEMS INC
10-Q/A, 1996-04-09
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                                    Form 10-Q

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                   (Mark One)

           [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                For the quarterly period ended December 31, 1995

                                       OR

          [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

        For the transition period from............... to ...............

                         Commission file number 1-10546


                           MOLECULAR BIOSYSTEMS, INC.
             (Exact name of registrant as specified in its charter)


                               Delaware 36-3078632
              (State of Incorporation) (I.R.S. Identification No.)


                            10030 Barnes Canyon Road
                           San Diego, California 92121
                                 (619) 452-0681
               (Address, including zip code, and telephone number,
              including area code, of principal executive offices)


Indicate by check mark whether the registrant (1) has filed all reports required
   to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934
 during the preceding 12 months (or for such shorter period that the registrant
  was required to file such reports), and (2) has been subject to such filing
                       requirements for the past 90 days.

                                    X Yes No

 The number of shares outstanding of the issuer's common stock, $.01 par value,
                 as of February 9, 1996 was 13,290,736 shares.
<PAGE>


                                         INDEX                              PAGE

PART I - FINANCIAL INFORMATION

        Item 1 - Financial Statements

        1. Consolidated Balance Sheets                                        3

           December 31, 1995
           March 31, 1995

        2. Consolidated Statements of Operations                              5

           Three Months Ended December 31, 1995 and 1994 
           Nine Months Ended December 31, 1995 and 1994

        3. Consolidated Statements of Cash Flows                              6

           Nine Months Ended December 31, 1995 and 1994

        4. Notes to Financial Statements                                      7

        Item 2 - Management's Discussion and Analysis of
        Financial Condition and Results of Operations                         8


PART II -OTHER INFORMATION

        Item 1 - Legal Proceedings                                           13

        Item 2 - Changes in Securities                                       13

        Item 3 - Defaults Upon Senior Securities                             13

        Item 4 - Submission of Matters to a Vote of Securities Holders       13

        Item 5 - Other Information                                           13

        Item 6 - Exhibits and Reports on Form 8-K                            13

           (a) Exhibits
           (b) Reports on Form 8-K

        Signatures                                                           14

<PAGE>
   
<TABLE>
<CAPTION>
                   MOLECULAR BIOSYSTEMS, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEETS

                                     ASSETS

                             (Dollars in thousands)

                                                                           December 31,
                                                                              1995            March 31,
                                                                          (Unaudited)           1995
                                                                        -----------------  ----------------
<S>                                                                              <C>               <C>   
CURRENT ASSETS:
     Cash and cash equivalents                                                    $2,231            $3,882
     Marketable securities, available-for-sale                                    18,889            15,836
     Accounts and notes receivable                                                   376             5,180
     Property held for sale                                                        6,476                 -  
     License rights                                                                2,700                 -
     Inventories                                                                     697             1,394
     Prepaid expenses and other assets                                               523               442
                                                                        -----------------  ----------------
          Total current assets                                                    31,892            26,734
                                                                        -----------------  ----------------

PROPERTY AND EQUIPMENT, at cost:
     Building and improvements                                                    14,171            18,125
     Equipment, furniture and fixtures                                             5,378             5,216
     Construction in progress                                                        609             2,253
                                                                        -----------------  ----------------
                                                                                  20,158            25,594
     Less:  Accumulated depreciation and amortization                              6,566             5,947
                                                                        -----------------  ----------------

                                                                                  13,592            19,647
                                                                        -----------------  ----------------

OTHER ASSETS:
     Patents and license rights, net                                                 341             1,724
     Other assets, net                                                             1,903             2,534
                                                                        -----------------  ----------------
                                                                                   2,244             4,258
                                                                        -----------------  ----------------

                                                                                 $47,728           $50,639
                                                                        =================  ================








</TABLE>

                             See accompanying notes.
<PAGE>
<TABLE>
<CAPTION>

                   MOLECULAR BIOSYSTEMS, INC. AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEETS

                      LIABILITIES AND SHAREHOLDERS' EQUITY

                             (Dollars in thousands)


                                                                           December 31,
                                                                              1995            March 31,
                                                                          (Unaudited)           1995
                                                                        -----------------  ----------------
<S>                                                                              <C>               <C>   
CURRENT LIABILITIES:
     Accounts payable and accrued liabilities                                     $5,238            $5,089
     Current portion of long-term debt                                               307               307
     Compensation accruals                                                           658               411
                                                                        -----------------  ----------------
          Total current liabilities                                                6,203             5,807
                                                                        -----------------  ----------------

LONG-TERM DEBT, net of current portion                                             8,183             8,408
                                                                        -----------------  ----------------

COMMITMENTS AND CONTINGENCIES (Note 2)

SHAREHOLDERS' EQUITY:
     Common stock, $.01 par value,
       20,000,000 shares authorized,
       13,290,736 and 11,999,561 shares
       issued and outstanding, respectively                                          133               120
     Additional paid-in capital                                                   91,432            78,422
     Retained deficit                                                            (57,769)          (41,472)
     Unrealized loss on available-for-sale securities                                 (6)             (118)
     Less notes receivable from sale of common stock                                (281)             (469)
     Less treasury stock, at cost                                                   (167)              (59)
                                                                        -----------------  ----------------

          Total shareholders' equity                                              33,342            36,424
                                                                        -----------------  ----------------

                                                                                 $47,728           $50,639
                                                                        =================  ================
                
</TABLE>


                            See accompanying notes.

<PAGE>
<TABLE>
<CAPTION>


                                             MOLECULAR BIOSYSTEMS, INC. AND SUBSIDIARIES

                                                CONSOLIDATED STATEMENTS OF OPERATIONS

                                         (Unaudited; in thousands, except per share amounts)


                                                            THREE MONTHS ENDED                NINE MONTHS ENDED
                                                               DECEMBER 31,                     DECEMBER 31,
                                                            1995             1994             1995            1994
                                                      --------------   --------------   --------------  --------------
<S>                                                   <C>              <C>              <C>             <C>          
REVENUES:
   Revenues under collaborative agreements            $       1,013    $       6,188    $       1,412   $      14,921
   Product revenues                                             232              720              506           1,267
   License fees                                                   -                -               25              40
                                                      --------------   --------------   --------------  --------------
                                                              1,245            6,908            1,943          16,228
                                                      --------------   --------------   --------------  --------------

RESEARCH AND DEVELOPMENT COSTS:
   Compensation                                               1,499            1,519            4,111           5,404
   Equipment and supplies                                       545            1,384            1,549           3,312
   Outside research, preclinical and clinical trials             75              345              564           1,512
   Legal, professional and consulting                           355              275            1,022           1,093
   Occupancy costs                                              359              237            1,128           1,011
   Other                                                        443              492            1,483           1,779
                                                      --------------   --------------   --------------  --------------
                                                              3,276            4,252            9,857          14,111

COST OF PRODUCTS SOLD                                           587              643            1,311             988

SELLING, GENERAL AND ADMINISTRATIVE
   EXPENSES                                                   1,066            1,338            4,178           4,278

OTHER EXPENSE                                                 3,110            3,000            3,110           3,350
                                                      --------------   --------------   --------------  --------------
        Total operating costs and expenses                    8,039            9,233           18,456          22,727
                                                      --------------   --------------   --------------  --------------

   LOSS FROM OPERATIONS                                      (6,794)          (2,325)         (16,513)         (6,499)

INTEREST EXPENSE                                               (195)            (193)            (596)           (496)
INTEREST INCOME                                                 344              283              812             930
                                                      --------------   --------------   --------------  --------------

NET LOSS                                              $      (6,645)   $      (2,235)   $     (16,297)  $      (6,065)
                                                      ==============   ==============   ==============  ==============

NET LOSS PER COMMON SHARE                             $       (0.50)   $       (0.19)   $       (1.30)  $       (0.51)
                                                      ==============   ==============   ==============  ==============
WEIGHTED AVERAGE COMMON SHARES
   OUTSTANDING                                               13,291           12,000           12,535          11,999
                                                      ==============   ==============   ==============  ==============






</TABLE>


                                               See accompanying notes.
<PAGE>
<TABLE>
<CAPTION>


                                             MOLECULAR BIOSYSTEMS, INC. AND SUBSIDIARIES

                                                CONSOLIDATED STATEMENTS OF CASH FLOWS

                                        FOR THE NINE MONTHS ENDED DECEMBER 31, 1995 AND 1994

                                                      (Unaudited; in thousands)

                                                                                            1995            1994
                                                                                        --------------  -------------
<S>                                                                                          <C>             <C>     
CASH FLOWS FROM OPERATING ACTIVITIES:
    Net loss                                                                                 ($16,297)       ($6,065)
    Adjustments to reconcile net loss to net cash
      used in operating activities:
       Depreciation and amortization                                                            1,868          2,455
       Write-down of property to be sold                                                          667              -
       Loss on write-off of license fees related to discontinued products                       1,025              -
       Forgiveness of note receivable from sale of common stock                                    56              -
       Changes in operating assets and liabilities:
        Receivables                                                                             4,748        (10,216)
        License Rights                                                                          2,700              -
        Inventories                                                                               697             49
        Prepaid expenses and other assets                                                         (80)          (242)
        Accounts payable and accrued liabilities                                                1,649          3,185
        Compensation accruals                                                                     247             50
                                                                                        --------------  -------------
              Cash used in operating activities                                                (8,120)       (10,784)
                                                                                        --------------  -------------

CASH FLOWS FROM INVESTING ACTIVITIES:
    Purchases of property and equipment                                                        (1,945)          (882)
    Additions to patents and license rights                                                       (45)          (500)
    Increase in other assets                                                                      (23)             -
    (Increase) decrease in marketable securities                                               (2,941)         6,502
                                                                                        --------------  -------------
              Cash provided by (used in) investing activities                                  (4,908)         5,120
                                                                                        --------------  -------------

CASH FLOWS FROM FINANCING ACTIVITIES:
    Net proceeds from issuance of common shares                                                11,602            183
    Long-term debt proceeds                                                                         -          5,000
    Principal payments on long-term debt                                                         (225)          (180)
                                                                                        --------------  -------------
              Cash provided by financing activities                                            11,377          5,003
                                                                                        --------------  -------------

DECREASE IN CASH AND CASH
    EQUIVALENTS                                                                                (1,651)          (661)

CASH AND CASH EQUIVALENTS, beginning of period                                                  3,882          1,557
                                                                                        --------------  -------------

CASH AND CASH EQUIVALENTS, end of period                                                       $2,231           $896
                                                                                        ==============  =============

SUPPLEMENTAL CASH FLOW DISCLOSURES:

    Interest income received                                                                     $804         $1,063
                                                                                        ==============  =============
    Interest paid                                                                                $592           $492
                                                                                        ==============  =============
</TABLE>

                                              See accompanying notes.
    

<PAGE>

NOTES TO FINANCIAL STATEMENTS
- -----------------------------

(1)      Basis of Presentation-
         ----------------------

         The  Notes  to the  Consolidated  Financial  Statements  of  Molecular
         Biosystems, Inc. (the "Company") were submitted with the Company's Form
         10-K  for  the  year  ended  March  31,  1995  and  should  be  read in
         conjunction with this Form 10-Q.

         These interim  Consolidated  Financial  Statements of the Company have
         not been audited by independent  public  accountants.  However,  in the
         opinion  of  the  Company,   all   adjustments   required  for  a  fair
         presentation  of the  financial  position of the Company as of December
         31, 1995,  and the results of its  operations  for the three- and nine-
         months ended  December 31, 1995 and 1994, and its cash flows for
         the  nine-month  periods  ended  December 31, 1995 and 1994,  have been
         made.  The  results of  operations  for these  interim  periods are not
         necessarily indicative of the operating results for the full year.

(2)      Contingencies-
         --------------

         In May 1993 the Company  entered into an exclusive  license  agreement
         with Bracco S.p.A.  of Milan,  Italy,  for the  distribution  rights in
         Europe and the former  Soviet Union to the Company's  proprietary  oral
         ultrasound agent for imaging the  gastrointestinal  tract. At that time
         Bracco  paid the  Company a license  fee of $2  million  and  undertook
         certain  developmental  obligations  in the  territory.  In March 1994,
         Bracco  notified the Company  that it desired to rescind the  agreement
         and  demanded  that the  Company  return the license  fee.  The Company
         denied that Bracco was  entitled  to rescind  the  agreement  or to the
         return of any portion of the license fee. In January 1995, Bracco filed
         a demand for arbitration claiming return of the $2 million license fee,
         in  addition to other  monetary  relief.  The Company  filed a response
         denying the material  allegations of Bracco's  demand.  On November 22,
         1995,  the  arbitrator  ruled in favor of MBI on two counts of Bracco's
         claim;  however,  he also awarded  Bracco $1.7  million plus  statutory
         interest on a legal theory not advanced by Bracco. MBI is appealing the
         award.  As a  result  of  the  arbitrator's  ruling,  the  Company  has
         recognized a charge to operations of  approximately  $2.4 million to
         reflect the amount of the award,  interest  accrued thereon and related
         attorneys'  fees.  Of  this  charge,  approximately  $1.4  million  was
         recorded  during the  quarter  ended  December  31,  1995.  Included in
         accounts  payable and  accrued  liabilities  at December  31, 1995 is a
         reserve of $2 million for the possible payment of this award.

(3)      Stock Settlement-
         -----------------

         In June  1994,  the  United  States  District  Court for the  Southern
         District of California  granted final approval to an agreement settling
         a class action complaint  against the Company,  certain of its officers
         and all of the members of its Board of Directors (Sherman v. Widder, et
         al., No. TS  92-1827-IEG  (M)) alleging  violations  of the  Securities
         Exchange  Act of  1934  and  California  securities  laws.  Part of the
         settlement  agreement provided for the Company to issue shares of MBI's
         common stock worth $1.5 million to  qualifying  class  members.  In May
         1995, the stock was transferred to the qualifying class members.
<PAGE>
   
(4)       Other Expense-
          --------------

         During the quarters  ended December 31, 1995 and December 31, 1994, the
         Company recorded the following charges:

<TABLE>

                                                              Three Months Ended      Nine Months Ended
                                                                 December 31,           December 31,
                                                                1995       1994        1995        1994
                                                             ---------- ----------  ---------- -----------
<S>                                                          <C>        <C>         <C>        <C>       

Legal settlement and related costs                           $   1,418  $       -   $   1,418  $      350
Write-off of license fees related to discontinued products       1,025                  1,025
Write-down of real estate to be sold                               667          -         667           -
Approval bonus paid by U.S. marketing partner                        -      3,000           -       3,000
                                                             ---------- ----------  ---------- -----------
    Total litigation and other                               $   3,110  $   3,000   $   3,110  $    3,350
                                                             ========== ==========  ========== ===========

</TABLE>

         The  arbitration  award and related  costs are discussed in note (2) on
         page 7.
    
         As a result  of the  Company's  decision  to  focus  its  research  and
         development  activities on its ultrasound  contrast agents, the Company
         wrote-off   approximately   $1  million  of  license  fees  related  to
         discontinued products which previously had been capitalized.


         Additionally, in November 1995, the Company entered into a contract for
         the sale of the two  buildings  and  underlying  land that the  Company
         purchased in December 1993. The sale of the buildings is expected to be
         completed in March 1996. As a result,  the Company has written-down the
         carrying  value of the  buildings  by  $667,000  to the net  amount  it
         expects to receive from this sale.


         Finally,  during the  quarter  ended  December  31,  1994,  the Company
         received a bonus from Mallinckrodt  Medical, its U.S. marketing partner
         of  approximately  $3 million related to the approval of ALBUNEX(R) for
         marketing in the United  States.  Under the terms of the  marketing and
         distribution agreement with Mallinckrodt,  this bonus was paid to MBI's
         employees. As a result, the Company accrued a liability for the payment
         of these bonuses in the quarter ended  December 31, 1994 of $3 million.
         The bonus was paid to employees in the quarter ended March 31, 1995.


<PAGE>



PART I - FINANCIAL INFORMATION


Item 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS

         The  following  management  discussion  and analysis  should be read in
conjunction with (1) the current  consolidated  financial statements and (2) the
Company's  consolidated  financial  statements and  management's  discussion and
analysis of financial  condition  and results of operations in its Annual Report
on Form 10-K for the year ended March 31, 1995.

Liquidity and Capital Resources

         On September 7, 1995, the Company  entered into an amended and restated
distribution  agreement and a related  investment  agreement  with  Mallinckrodt
Medical, Inc.  ("Mallinckrodt")  which will provide the Company with between $33
million and $47.5  million in new  financing  (includes  the $13 million  common
stock  investment   discussed   below).   Under  the  terms  of  the  agreement,
Mallinckrodt  will pay the  Company  $20  million  over  four  years to  support
clinical  trials of FS069 (the  Company's  second-generation  cardiac  perfusion
product),  related regulatory  submissions and associated  product  development.
These payments will be made in 16 quarterly  installments starting at $1 million
for the first four quarters,  $1.25 million for the following eight quarters and
$1.5  million  for the final  four  quarters.  The first  and  second  quarterly
payments were paid on October 1, 1995 and January 2, 1996.

         The amended  distribution  agreement  requires  the Company to spend at
least $10 million of this $20 million on clinical  trials to support  regulatory
filings  with the FDA for cardiac  indications  of FS069.  After the Company has
spent this $10 million, the amended distribution  agreement requires the Company
and Mallinckrodt to share equally in the cost of any additional  clinical trials
of FS069 in the United States, up to a maximum total of $5 million ($2.5 million
each).

         The amended distribution agreement also provides for potential payments
to the Company of up to $12 million upon the satisfaction of certain milestones.
(There can be no assurance, however, that all or any of these milestones will be
satisfied.)

         In connection with the amended distribution agreement, the Company also
entered  into  an  investment  agreement  whereby  the  Company  sold  1,118,761
unregistered  shares of its common stock to Mallinckrodt  for $13 million,  or a
price of $11.62 per share before related  costs.  With the 181,818 shares of the
Company's  common stock that  Mallinckrodt  acquired in December  1988 (under an
investment agreement which the Company and Mallinckrodt entered into at the same
time as they  entered into the original  distribution  agreement),  Mallinckrodt
owns approximately 9.8% of the Company's issued and outstanding shares.

   
          The  Company  expects  that the  funding  provided  under the  amended
distribution  agreement to be its major  source of funds for Company  operations
over the next several  years.  At December 31, 1995, the Company had net working
capital of $25.7 million  compared to $20.9 million at March 31, 1995.  Cash and
current  marketable  securities were $21.1 million at December 31, 1995 compared
to $19.7 million at March 31, 1995.
    

         For the next several years,  the Company  expects to incur  substantial
additional expenditures associated with product development. As discussed above,
funding  provided  under the amended  distribution  agreement  will be the major
source to fund the Company's operating costs and expenses. The Company will also
continue to utilize  product  revenues from sales of ALBUNEX(R) and its existing
cash and  marketable  securities  and the  interest  earned  thereon to fund its
operations  and  capital  spending  needs.  The  Company  may pursue a number of
options to raise additional funds,  including  borrowings;  lease  arrangements;
collaborative   research  and  development   arrangements  with   pharmaceutical
companies;  the  licensing of product  rights to third  parties;  or  additional
public and private financing,  as anticipated  capital  requirements change as a
result of strategic,  competitive,  technological and regulatory factors.  There
can be no assurance that funds from these sources will be available on favorable
terms, if at all.

Results of  Operations

         Revenues.  During the first year after the Company  received  clearance
for the  marketing  and sale of  ALBUNEX(R)  in the United  States,  the Company
recognized revenues both on its sales to Mallinckrodt (see "Product Revenues and
License Fees," below) and on Mallinckrodt's subsequent sales to the end users of
ALBUNEX(R) (see "Revenues Under Collaborative Agreements," below).

         Revenues Under Collaborative  Agreements.  Revenues under collaborative
agreements,  which have been the primary  source of revenues  for the Company in
the past,  were $1 million and $1.4 million for the  three-month  and nine-month
periods ended December 31, 1995,  compared to $6.2 million and $14.9 million for
both of the same periods in the prior year.

         For both the  three-month  and  nine-month  periods ended  December 31,
1995, $1 million of the revenues under collaborative agreements was attributable
to the  receipt of the first  quarterly  payment  from  Mallinckrodt  to support
clinical trials (discussed above under "Liquidity and Capital  Resources").  The
remaining $13,000 and $412,000 for the same periods were based on Mallinckrodt's
sales to its customers.  Under the original Mallinckrodt contract, for the first
twelve months after the Company received  clearance for ALBUNEX(R) in the United
States,  Mallinckrodt  agreed to pay a bonus to MBI equivalent to Mallinckrodt's
first year product sales at its sales price to the end users of the product. The
Company earned $757,000 based upon the first-year product sales of ALBUNEX(R) by
Mallinckrodt.  The bonus  payment  was  received in  December  1995.  Prior year
revenues consisted of milestone  revenues  recognized as a result of the Company
receiving  approval to market ALBUNEX(R) in the United States and the release of
ALBUNEX(R) to Mallinckrodt's sales force.

         Product Revenues and License Fees.  Revenues,  excluding revenues under
collaborative  agreements,  were $232,000 and $531,000 for the  three-month  and
nine-month  periods  ended  December  31,  1995,  compared to $720,000  and $1.3
million  for the same  periods in the prior year.  Product  sales are based upon
MBI's sales to Mallinckrodt and Shionogi and are recognized upon shipment of the
product.  The transfer  price for MBI's sales of ALBUNEX(R) to  Mallinckrodt  is
equal to 40% of  Mallinckrodt's  net sales price to its end users of the product
and the transfer price for MBI's sales of ALBUNEX(R) to Shionogi is equal to 30%
of Shionogi's net sales price to its end users of the product.

         Cost of Products Sold. Cost of products sold totaled  $587,000 and $1.3
million for the  three-month  and nine-month  periods ending  December 31, 1995,
resulting  in a negative  gross  profit  margin due to the current low levels of
production. Cost of products sold totaled $988,000 for the period ended December
31, 1994,  resulting  in a gross  profit  margin of 22%. The higher gross profit
margin  percentage  in  the  prior  year  was  due to  then  greater  levels  of
production.

         Research and  Development  Costs.  For the  three-month  and nine-month
periods ended December 31, 1995,  the Company's research and  development  costs
totaled  $3.3  million and $9.9  million,  as compared to $4.3 million and $14.1
million, respectively, for the same periods in 1994. This decrease of 30% in the
current  year is due in large part to the  decision the Company made in February
1995 to focus its research and development  efforts  primarily on its ultrasound
contrast agents and reduce its staffing by approximately twenty five percent.

   
         Selling,  General and Administrative  Expenses. For the three-month and
nine-month periods ended December 31, 1995, the Company's  selling,  general and
administrative  expenses  totaled $1.1 million and $4.3 million,  as compared to
$1.3 million and $4.6 million,  respectively, for the same periods in 1994. This
decrease in the current  year is also due to the  decision to reduce the
Company's staffing made in February 1995.
    

         Interest  Expense  and  Interest  Income.   Interest  expense  for  the
three-month and nine-month  periods ended December 31, 1995 and 1994 consists of
mortgage interest on the Company's buildings.  Interest expense is higher in the
current year due to a note payable which the Company entered into in May 1994 to
finance the purchase of two unimproved buildings and underlying land in December
1993.

         The  decrease  in interest  income in the current  year is due to lower
average cash and marketable securities balances.

         The Company's cash is invested primarily in short-term, fixed principal
investments,   such  as  U.S.   Government   agency  issues,   corporate  bonds,
certificates of deposit and commercial paper.

Prospective Information

         As noted  above,  on  September  7, 1995,  the Company  entered into an
amended and restated  distribution  agreement and a related investment agreement
with  Mallinckrodt.  This amended  distribution  agreement modifies the original
December 1988  distribution  agreement between the Company and Mallinckrodt in a
number of respects.  Under the amended distribution agreement,  the geographical
scope of  Mallinckrodt's  exclusive  right to market the  Company's  proprietary
contrast agent for transpulmonary  cardiac ultrasound imaging,  ALBUNEX(R),  the
Company's second generation  ultrasound  contrast agent,  FS069 (currently under
development),  and related products was expanded to include all of the countries
of the world other than those covered by the Company's  license  agreements with
Shionogi & Co.,  Ltd. and Nycomed AS. The duration of  Mallinckrodt's  exclusive
right was also  extended  from  October  1999 until the later of July 1, 2003 or
three years after the date that Company obtains  approval from the U.S. Food and
Drug  Administration  ("FDA")  to  market  FS069 for an  intravenous  myocardial
perfusion indication (use).

         The amended  distribution  agreement  requires  the Company to spend at
least $10  million of the $20  million it  receives  over four years on clinical
trials to support  regulatory  filings with the FDA for cardiac  indications  of
FS069. The Company's  expenditure of this $10 million will be made in accordance
with  the  directions  of a joint  steering  committee  which  the  Company  and
Mallinckrodt  will establish in order to expedite the development and regulatory
approval of FS069 by enabling the parties to share their  expertise  relating to
clinical  trials  and  the  regulatory   approval   process.   The  Company  and
Mallinckrodt  will each  appoint two of the four  members of the joint  steering
committee.

         After the Company has spent this $10 million,  the amended distribution
agreement  requires the Company and Mallinckrodt to share equally in the cost of
any  additional  clinical  trials of FS069 in the United  States which the joint
steering committee may direct to be performed,  up to a maximum of $5 million on
a combined basis.

         In addition,  the amended distribution agreement grants the Company the
option (at its own  discretion) to repurchase all of the shares of the Company's
common stock that Mallinckrodt  purchased under the investment agreement for $45
million,  subject to  various  price  adjustments.  This  option is  exercisable
beginning  the  later of July 1,  2000 or the  date  that  the  Company  obtains
approval from the FDA to market FS069 for an  intravenous  myocardial  perfusion
indication  and ending on the later of June 30,  2003 or three  years  after the
date that the  Company  obtains  approval  from the FDA to  market  FS069 for an
intravenous  myocardial  perfusion.  If the Company  exercises this option,  the
Company  may  co-market  ALBUNEX(R),  FS069 and  related  products in all of the
countries covered by the amended distribution agreement.

         Shares sold to Mallinckrodt under the related investment  agreement are
subject to certain  anti-dilution  and  registration  rights of Mallinckrodt and
certain first refusal and "standstill" rights of MBI.

         In October  1995,  the Company  entered  into an  agreement  whereby it
reaquired all rights to INFOSON (the European designation for ALBUNEX(R)), FS069
and related products from Nycomed, the Company's European licensee.  Nycomed has
received approval to market ALBUNEX(R) in Sweden, Finland and the United Kingdom
and has filed applications in several other European countries,  but has not yet
begun to market the  product.  The  Company is  currently  in  discussions  with
another  potential  licensee for Nycomed's  territory,  which  includes  Europe,
Africa,  parts of Asia and India.  Financial  terms will be disclosed at a later
date.

          Sales of  ALBUNEX(R) . In October  1993,  ALBUNEX(R)  was approved for
marketing in Japan and became the first  ultrasound  contrast agent available in
that country. As initial sales were below the Company's  expectations,  Shionogi
and the Company  engaged in an  intensive  cooperative  study of the  situation.
However, to increase the likelihood of improved sales performance in the future,
Shionogi,  with the Company's  concurrence,  decided during the first quarter of
fiscal 1995 to curtail  promotional  efforts and limit current Japanese sales to
selected  accounts  until these issues have been  resolved.  The Company has had
limited sales to Shionogi  since the second  quarter of fiscal 1995. The Company
and  Shionogi  have  recently  discussed  the  possibility  of  terminating  the
agreement between the companies. The Company believes that it is likely that the
relationship  with Shionogi will be terminated  within the next twelve months on
terms to be determined.

         In August 1994,  the Company  received  clearance for the marketing and
sale of  ALBUNEX(R)  in the United  States.  Product  sales from the  Company to
Mallinckrodt,  the  Company's  distributor  in the United  States,  totaled $1.4
million  for the first 15 months the  product  has been  marketed  in the United
States.

          President  and Chief  Operating  Officer.  In October 1995 the Company
appointed Mr. Bobba  Venkatadri as President and Chief  Operating  Officer.  Mr.
Venkatadri   most   recently   served  as  Executive   Vice   President  of  the
Pharmaceutical  Division of Centocor,  Inc.,  in Malvern,  Pennsylvania.  He was
instrumental  in  restructuring   Centocor  which  included  building  strategic
alliances, management of R&D, product approvals and scale-up of new products.

          Mr.  Venkatadri  was  appointed  to fill the  vacancy  created  by the
resignation of Vincent A. Frank.  Mr. Frank,  who served as MBI's  President and
Chief Operating Officer for 10 years, passed away in August 1995 after a lengthy
illness.

PART II - OTHER INFORMATION

Item 1-5 - The Company has nothing to report with  respect to these items during
the quarter ended December 31, 1995.
   
Item 6 - EXHIBITS AND REPORTS ON FORM 8-K

(a)Exhibits - 
     
   10.1  Amended and Restated Distribution Agreement dated September 11, 1995
         between the Company and Mallinckrodt Medical, Inc.

   10.2  Investment Agreement dated September 7, 1995 between the Company and
         Mallinckrodt Medical, Inc.

   10.3  Amendment No. 3 to License and Cooperative Development Agreement dated
         October 24, 1995 between the Company and Nycomed Imaging AS.
    
(b)Reports on Form 8-K

         A  Current  Report  on Form 8-K  dated  September  7,  1995,  was filed
     on September  25,  1995,  reporting a restated  distribution  agreement and
     a related investment agreement with Mallinckrodt Medical, Inc.

         A Current Report on Form 8-K  dated  November  22,  1995,  was filed on
     December 13, 1995, reporting that the arbitrator in arbitration proceedings
     between  Molecular  Biosystems,  Inc.  (the  "Company")  and Bracco  S.p.A.
     ("Bracco")  entered an award  refunding  a portion of the  license fee that
     Bracco paid to MBI in May 1993 in connection with the Company's  license to
     Bracco of MBI's oral ultrasound agent technology.

<PAGE>

SIGNATURES

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


MOLECULAR BIOSYSTEMS, INC.




/s/ Gerard A. Wills
- -------------------
Gerard A. Wills
Vice President Finance and
Chief Financial Officer


4/09/96
- -----------
Date


                   Amended and Restated Distribution Agreement



        This  Agreement  is entered  into as of September 7, 1995 by and between
Mallinckrodt  Medical,  Inc.,  a  Delaware  corporation  with an  address at 675
McDonnell   Boulevard,   Post  Office  Box  5840,  St.  Louis,   Missouri  63134
("Mallinckrodt"), and Molecular Biosystems, Inc., a Delaware corporation with an
address at 10030 Barnes Canyon Road, San Diego,  California 92121 ("MBI").  This
Agreement  is  effective  as of  December  7, 1988 except as provided in Section
16.15.

                                    Recitals

        A. Mallinckrodt and MBI are parties to a Distribution Agreement dated as
of  December  7, 1988,  as amended by an  Agreement  dated  November 7, 1989 (as
amended, the "Current Distribution Agreement").

        B. Mallinckrodt and MBI desire to amend and restate the Current 
Distribution Agreement as follows.

        Now, therefore,  in consideration of their mutual promises,  the parties
agree as follows:

                                    Article 1

                                   Definitions

        As used in this  Agreement,  the following terms shall have the meanings
specified below:

        1.01  Additional  Territory shall mean all of the countries of the world
except the countries  included in the Territory,  the Nycomed  Territory and the
Shionogi Territory.

        1.02 Affiliate  shall mean with respect to a  corporation,  association,
partnership,   individual,  trust  or  unincorporated  organization,  any  other
corporation,  association,  partnership,  individual,  trust  or  unincorporated
organization that, directly or indirectly,  controls,  is controlled by or under
common  control with such  corporation,  association,  partnership,  individual,
trust or unincorporated organization.

        1.03  Agreement  shall  mean  this  Amended  and  Restated  Distribution
Agreement, as amended from time to time.

        1.04 ALBUNEX shall mean any product for medical applications,  including
all modifications and improvements related thereto,  that is an in vivo contrast
agent for ultrasound  and  echocardiography  diagnostic  imaging and (a) that is
covered by or described in, or manufactured in accordance with a process covered
by or  described  in, any  patent or  pending  patent  application  included  in
Appendix 2, (b) that is functionally similar to a product included


<PAGE>


in (a) above and is  currently  in the  possession  or  control  (by  license or
otherwise) of MBI, (c) that could be made pursuant to any process referred to in
(a)  above,  whether  or not it is in fact  made by that  process,  or (d)  that
consists  of  microbubbles  or  hollow  microspheres  made  of  a  biocompatible
material.

        The term "ALBUNEX" includes (but is not limited to) products  consisting
of sonicated albumin  microspheres  containing a perfluorocarbon in gaseous form
and  specifically   includes  the  product   consisting  of  sonicated   albumin
microspheres containing perfluoropropane which MBI has code-named "FS069."

        1.05 Albunex  Product means each vial size of ALBUNEX  manufactured  for
commercial  sale for  which the  manufacturer  assigns  a  separate  identifying
number.  Each vial size of ALBUNEX  manufactured  for  commercial  sale shall be
assigned a separate  identifying  number for each country in which vials of that
size are sold or to be offered for sale.  If a particular  vial size is labelled
in a manner that permits vials of that size to be sold in more than one country,
a single identifying number shall be assigned in respect of all such countries.

        1.06 Average Selling Price means, for each Albunex Product which is sold
during any calendar quarter, the quotient obtained by dividing (i) the Net Sales
of that Albunex  Product  during the quarter by (ii) the number of vials of that
Albunex Product shipped to purchasers during the quarter  (including vials given
away in order to provide a discounted  purchase  price and vials  distributed as
samples,  but not  including  vials  shipped  at no charge for  preclinical  and
clinical  trials).  The Average  Selling Price for each Albunex Product which is
labelled in a manner that permits  vials of that product to be sold in more than
one country shall be determined on a sales-weighted basis by taking into account
the aggregate Net Sales of that Albunex Product in all such countries during the
quarter  (i.e.,  the Average  Selling Price shall not be determined by averaging
the Average Selling Price for each such country).

        1.07  Change in  Control  shall  mean with  respect  to MBI, a change of
control of a nature  that would be  required  to be reported in response to Item
6(e) of Schedule 14A of Regulation 14A promulgated under the Securities Exchange
Act of 1934, as amended  ("Exchange  Act").  Without  limiting the foregoing,  a
Change  in  Control  shall  be  deemed  to have  occurred  for  purposes  of the
Agreement, regardless of the provisions of the Exchange Act, if (a) any "person"
(as such term is used in Sections  13(d) and 14(d)(2) of the  Exchange  Act, and
including  any  "group" of  persons)  is or  becomes  the  beneficial  owner (as
determined in accordance  with Rule 13d-3  promulgated  under the Exchange Act),
directly or  indirectly,  of  securities  of MBI,  which when  combined with all
securities of MBI theretofore directly or indirectly  beneficially owned by such
person,  represent  40% or more of the  combined  voting  power  of  MBI's  then
outstanding securities; (b) at any election or series of elections,  persons not
proposed for  nomination  or nominated by the  management  of MBI are elected as
directors  of MBI,  and  together  constitute  50% or more of the MBI  board  of
directors;  or (c) any person or group  solicits and receives  valid proxies for
the  election of the MBI board of  directors  in  opposition  to the nominees of
management  of MBI  representing  an  aggregate  of 50% or more of the  combined
voting power of MBI's then outstanding securities.

        1.08  Confidential  Information  shall mean (a) any data or  information
relating to ALBUNEX that is competitively  sensitive material, and not generally
known to the public, such as, but not limited to, product planning  information,
marketing strategies, sales estimates,  business plans, and internal performance
results  relating to  ALBUNEX;  (b) any  scientific  or  technical  information,
design, process, procedure,  formula, or improvement relating to ALBUNEX that is
commercially  valuable and secret in the sense that its confidentiality  affords
the disclosing  party a competitive  advantage over its  competitors,  including
without limitation,  the manufacturing  techniques,  sources of raw material and
composition  of  matter  relating  to  ALBUNEX;  and  (c)  all  confidential  or
proprietary concepts, inventions, and information relating to ALBUNEX, including
but not limited to know-how and trade secrets relating to ALBUNEX.  Confidential
Information includes without limitation, all documents, inventions,  substances,
engineering  and  laboratory  notebooks,  drawings,  specifications,   bills  of
material,  equipment,  prototypes and models relating to ALBUNEX,  and any other
tangible manifestation of the foregoing which now exist or come into the control
or possession of the party.

        1.09 Damages is defined in Section 7.01(c)(2)(A).

        1.10 Effective Date is defined in Section 16.15.

        1.11 Exclusive Period is defined in Section 9.01.

        1.12 FDA shall mean the United States Food and Drug  Administration,  or
any successor agency thereto.

        1.13  Force  Majeure  shall  mean  any  act  or  occurrence  beyond  the
reasonable  control of a party that prevents its  performance of any covenant or
obligation under this Agreement  including  without  limitation:  (a) lightning,
storms,  earthquakes,  landslides,  flood,  washouts,  or other acts of God; (b)
fires, explosions,  or breakage of or accidents to plant, machinery,  equipment,
or storage; (c) shortage of necessary labor,  strikes,  lockouts, or other labor
disturbances; (d) civil disturbances,  sabotage, war, blockades,  insurrections,
vandalism,  riots, or epidemics; (e) acts of any governmental agency or military
authority; (f) unavailability of utilities or transportation;  or, (g) any other
cause, whether enumerated herein or otherwise, that is not reasonably within the
control  of  the  party  claiming  suspension,  which  by  the  exercise  of due
diligence, such party is unable to overcome.  Notwithstanding the foregoing, the
lack of finances for whatever reason shall in no event be, or be deemed to be, a
cause beyond the party's control.

        1.14 Forecast is defined in Section 2.05(b).

        1.15 [Omitted; filed separately with the Commission.]

        1.16 Joint Steering Committee is defined in Section 2.16.

        1.17  Know-how  shall  mean  complete  information  concerning  ALBUNEX,
including  but not limited to (a) all  Confidential  Information  of a technical
nature relating to ALBUNEX, (b) all useful pre-clinical, clinical and other data
respecting  the safety and  efficacy  of  ALBUNEX,  (c) all the  records of case
histories of use, medical  evaluations,  submissions to and correspondence  with
the FDA and  corresponding  foreign  agencies  relating to ALBUNEX,  and (d) all
useful  technical  data  and  information,  including  but  not  limited  to all
documents and prototypes and models  actually  provided to  Mallinckrodt by MBI,
relating  to formulas  for and the  manufacture,  use or sale of ALBUNEX  owned,
controlled  or  licensed by MBI which is  necessary  to or helpful to (x) enable
Mallinckrodt most efficiently to manufacture, use or sell ALBUNEX, or (y) obtain
any governmental approval to sell ALBUNEX.

        1.18 Launch Date shall mean  October 17,  1994,  which was the date that
Mallinckrodt first released ALBUNEX to its sales force for commercial sale after
the FDA issued its initial approval letter for ALBUNEX.

        1.19 Loss shall mean any liability, loss, cost, damage or actual expense
reasonably incurred (including,  without limitation,  reasonable and appropriate
attorneys' fees) sustained by the indemnified  party,  together with any related
interest and penalties.

        1.20 Mallinckrodt  shall mean Mallinckrodt  Medical,  Inc., a Delaware
corporation (which is the successor in interest to Mallinckrodt, Inc. as a 
party to this Agreement).

        1.21 MBI shall mean Molecular Biosystems, Inc., a Delaware corporation.

        1.22 MBI's  Manufacturing  Obligations  means  MBI's  manufacturing  and
delivery obligations and covenants in Sections 2.02, 2.03, 2.04(b), (c), (d) and
(e), 2.06, 2.07, 2.09(c), 2.13 and 6.02(i) and (j).

        1.23  MBI   Trademarks   shall  mean  the   trademarks,   including  the
registrations and applications  therefor listed in Appendix 1, together with any
other  trademarks,  registrations  or applications  similar to the  "ALBUNEX(R)"
mark.

        1.24 NDA shall mean with respect to any  formulation  or  indication  of
ALBUNEX a New Drug Application as required to be filed with the FDA.

        1.25 Net Sales shall mean, for each Albunex Product, the aggregate gross
sales of that Albunex  Product by  Mallinckrodt  or its Affiliates to purchasers
who  are  not  Affiliates  of  Mallinckrodt,  less  the  aggregate  related  (i)
allowances  for  spoiled,   damaged,   out-of-date   (under  Section   2.04(e)),
out-of-specification  (in respect of specifications required by this Agreement),
recalled  or returned  vials (if the  spoilage,  damage,  being  out-of-date  or
out-of-specification,  recall or return is due to the fault of MBI), (ii) trade,
quantity and cash discounts and rebates allowed, (iii) all sales, use and excise
taxes and duties paid, and (iv)  transportation  and handling  charges paid. For
any Net Sales in a currency other than United States dollars, the amount of such
Net Sales shall be computed  using the average of the daily  exchange  rates for
the month of sale,  as reported by Reuters  Ltd.  Money 2000 System or any other
exchange rate reporting  service or commercial  source  selected by Mallinckrodt
and  approved  by MBI (which  shall not  unreasonably  withhold  its  approval),
provided  that  Mallinckrodt  shall not  select  another  reporting  service  or
commercial  source  arbitrarily  or for the purpose of gaining an exchange  rate
more  favorable to it than the exchange rate reported by the Reuters Ltd.  Money
2000 System.

        1.26 1995 Investment  Agreement means the Investment  Agreement dated as
of September 7, 1995 between MBI and Mallinckrodt.

        1.27 [Omitted; filed separately with the Securities and Exchange 
              Commission ("Commission")]

        1.28 [Omitted; filed separately with the Commission.]

        1.29 [Omitted; filed separately with the Commission.]

        1.30 [Omitted; filed separately with the Commission.]

        1.31 [Omitted; filed separately with the Commission.]

        1.32 PMA shall mean with respect to any  formulation  or  indication  of
ALBUNEX a Pre-Market Approval submission as required to be filed with the FDA.

        1.33 Product  Literature  shall mean the product  literature for ALBUNEX
developed pursuant to Section 2.10.

        1.34 Product Specifications shall mean the specifications for ALBUNEX to
be supplied by MBI as in effect from time to time as provided in Section 2.02.

        1.35 Repurchasable Shares is defined in Section 9.02.

        1.36 [Omitted; filed separately with the Commission.]

        1.37 [Omitted; filed separately with the Commission.]

        1.38 [Omitted; filed separately with the Commission.]

        1.39 [Omitted; filed separately with the Commission.]

        1.40 [Omitted; filed separately with the Commission.]

        1.41 Start-Up Costs is defined in Section 7.01(c)(2)(A).

        1.42 Stock Repurchase Option is defined in Section 9.02.

        1.43 Technology Rights shall mean the following:

        (a) Those patents and patent applications, if any, in the Territory, the
Additional  Territory,  [omitted;  filed  separately  with the  Commission],  as
currently  set forth in Appendix 2, together with any patent which may be issued
thereunder,   and   any   divisional,   continuation   or   continuation-in-part
applications  based  thereon,  and  any  patents  resulting  from  any  of  said
applications  and any reissues or extensions  based on any of such patents,  and
any equivalent  patents and patent  applications  in countries of the Territory,
the Additional Territory, [omitted; filed separately with the Commission]; and

        (b) Any  other  patents  or  patent  applications  in  countries  of the
Territory,  the  Additional  Territory,  [omitted;  filed  separately  with  the
Commission],  or Know-how  presently  owned,  controlled  or licensed  by, being
developed or subsequently developed or acquired (under license or otherwise) by,
MBI which relate directly to ALBUNEX and its manufacture or use.

        1.42 Territory  shall mean all countries,  territories  and  possessions
located in North America, Central America or South America, excluding Greenland.

                                    Article 2

                             Manufacture of ALBUNEX

        2.01 Regulatory Matters.

        (a) All  applications  submitted to the FDA relating to ALBUNEX shall be
in  compliance  with  all  FDA  regulations  and  requirements.  All  activities
necessary for the  commercialization  of ALBUNEX under this Article 2, including
but not limited to pre-clinical  and clinical trials,  pre-marketing  activities
and pre-production  activities,  shall be conducted in a commercially reasonable
manner and in accordance with accepted industry  standards.  Clinical trials and
other studies shall be conducted in accordance with applicable FDA  requirements
and procedures, including but not limited to Good Laboratory Practices.

        (b) Timing of the  preparation  and  submission of all FDA  applications
shall be as mutually  agreed by  Mallinckrodt  and MBI.  All fees,  expenses and
charges  incurred  with  respect to all FDA or foreign  equivalent  applications
shall be borne by the party which has the responsibility under this Section 2.01
to perform the activities related to such application.

        (c)  Notwithstanding  the first sentence of Section 2.01(b) and Sections
2.01(d)  through  (g),  MBI shall  complete  the initial  Phase III of the Human
Clinical  Trials for the  indication  of ALBUNEX  specified  in  Appendix 4 (the
"Current  Product").  MBI  shall  file  with  the  FDA a NDA or PMA  application
relating  to the  Current  Product as soon as  practicable.  Mallinckrodt  shall
provide  reasonable  assistance  to  MBI  in  connection  with  the  NDA  or PMA
application  relating to the Current Product.  Mallinckrodt shall have the right
to review and approve the NDA or PMA  application  for the Current Product prior
to submission to the FDA, which approval shall not be  unreasonably  withheld or
delayed. MBI shall include Mallinckrodt as an alternative  manufacturing site in
all relevant submissions and applications to the FDA.

        (d) MBI  shall  be  responsible  for  obtaining  all FDA  approvals  and
conducting  any  activities  related  thereto,  including  but  not  limited  to
pre-clinical  and clinical  trials,  for (x) all cardiac  indications of ALBUNEX
listed on Appendix 3, and (y) any other cardiac  indication of ALBUNEX which MBI
determines,  in  its  judgment  after  consultation  with  Mallinckrodt,  has  a
reasonable  market  opportunity to support the anticipated  expenses  associated
with obtaining the FDA regulatory  approvals for such  indication.  Mallinckrodt
shall provide reasonable assistance to MBI in connection with any application or
submission  to the FDA by MBI  pursuant to this  Section  2.01(d).  Mallinckrodt
shall have the right to review and approve any  application or submission to the
FDA by MBI  pursuant to this Section  2.01(d)  prior to  submission  to the FDA,
which approval shall not be unreasonably  withheld or delayed. MBI shall include
Mallinckrodt as an alternative  manufacturing  site in all relevant  submissions
and applications to the FDA provided that Mallinckrodt's  manufacturing facility
is  reasonably  likely to satisfy all FDA  requirements  in respect of such site
which  must  be  satisfied  for  approval  of  the   particular   submission  or
application. At Mallinckrodt's request, MBI shall also promptly take appropriate
steps to enable  Mallinckrodt  to reference or otherwise have the benefit of all
approvals  and  applications  that MBI  obtains  or submits  under this  Section
2.01(d).

        (e)  Mallinckrodt  shall be responsible  for obtaining all FDA approvals
and  conducting  any activities  related  thereto,  including but not limited to
pre-clinical  and clinical  trials,  for any  indication of ALBUNEX  (other than
those  which MBI has or  undertakes  responsibility  for  pursuant  to  Sections
2.01(c)  or  (d))  which   Mallinckrodt   determines,   in  its  judgment  after
consultation  with MBI,  has a  reasonable  market  opportunity  to support  the
anticipated  expenses associated with obtaining the FDA regulatory approvals for
such  indication.  MBI shall provide  reasonable  assistance to  Mallinckrodt in
connection  with  any  application  or  submission  to the  FDA by  Mallinckrodt
pursuant to this Section 2.01(e). MBI shall have the right to review and approve
any  application  or  submission  to the FDA by  Mallinckrodt  pursuant  to this
Section  2.01(e)  prior to submission to the FDA,  which  approval  shall not be
unreasonably  withheld  or  delayed.   Mallinckrodt  shall  include  MBI  as  an
alternative  manufacturing site in all relevant  submissions and applications to
the FDA. At MBI's  request,  Mallinckrodt  shall also promptly take  appropriate
steps to enable MBI to reference or otherwise  have the benefit of all approvals
and applications that Mallinckrodt obtains or submits under this Section 2.01(e)
in respect of all ALBUNEX  developed by MBI, or jointly by MBI and Mallinckrodt,
if and when (i) MBI exercises  either of its options under Sections  9.01(a) and
(b) or (ii) MBI terminates this Agreement pursuant to Sections 14.02(b),  (d) or
(f).

        (f) Mallinckrodt shall be responsible for obtaining all approvals of any
foreign equivalent of the FDA in (i) any country in the Territory other than the
United  States of  America  and (ii) any  country in the  Additional  Territory,
[omitted;  filed separately with the Commission],  and conducting any activities
related  thereto,  including but not limited to preclinical and clinical trials,
for any  indication of ALBUNEX which  Mallinckrodt  determines,  in its judgment
after consultation with MBI, has a reasonable market opportunity in such country
to support the  anticipated  expense  associated  with  obtaining the applicable
regulatory  approvals for such indication.  [Omitted;  filed separately with the
Commission.]  MBI  shall  provide  reasonable   assistance  to  Mallinckrodt  in
connection  with  any  applicable  application  or  submission  by  Mallinckrodt
pursuant to this Section 2.01(f). MBI shall have the right to review and approve
any  application  or  submission  to  the  foreign  equivalent  of  the  FDA  by
Mallinckrodt pursuant to this Section 2.01(f) prior to submission to the foreign
equivalent of the FDA,  which  approval  shall not be  unreasonably  withheld or
delayed.  Mallinckrodt shall include MBI as an alternative manufacturing site in
all relevant  submissions and applications to the foreign equivalent to the FDA.
At MBI's request [omitted;  filed separately with the Commission],  Mallinckrodt
shall  also  promptly  take  appropriate  steps to enable  MBI to  reference  or
otherwise have the benefit of all approvals that Mallinckrodt obtains or submits
under  this  Section  2.01(f) in respect of all  ALBUNEX  developed  by MBI,  or
jointly by MBI and  Mallinckrodt,  if and when (i) MBI  exercises  either of its
options under  Sections  9.01(a) and (b) or (ii) MBI  terminates  this Agreement
pursuant to Sections 14.02(b), (d) or (f).

        (g) In the event that MBI, in its sole judgment,  decides to seek FDA or
any foreign  equivalent thereof approval for any indication of ALBUNEX for which
Mallinckrodt  determines  pursuant to  Sections  2.01(e) or (f) not to seek such
approval,  then MBI shall be  responsible  for obtaining all such  approvals and
conducting  any  activities  related  thereto,  including  but  not  limited  to
pre-clinical and clinical trials,  for such indication of ALBUNEX.  Mallinckrodt
shall have the right to review and approve any  application or submission by MBI
pursuant to this Section  2.01(g) prior to submission,  which approval shall not
be  unreasonably  withheld  or delayed.  MBI shall  include  Mallinckrodt  as an
alternative  manufacturing  site in all relevant  submissions  and  applications
provided that  Mallinckrodt's  manufacturing  facility is  reasonably  likely to
satisfy all  requirements  of the FDA or the  applicable  foreign  equivalent in
respect of such site which must be  satisfied  for  approval  of the  particular
submission or application.

        (h) MBI and Mallinckrodt  shall promptly make available to the other all
pharmacological,  toxicological,  and clinical data and reports, stability data,
and similar information relating to any formulation or indication of ALBUNEX now
or  hereafter  known to, or  possessed,  acquired or developed by MBI or jointly
developed by MBI and Mallinckrodt.

        (i)  Subject  to  the  consent  of  MBI,  which  consent  shall  not  be
unreasonably withheld,  Mallinckrodt shall have the right to participate in, and
assist MBI with, all activities MBI is required to take under this Section 2.01,
including,  but not limited to,  preclinical and clinical trials,  and to attend
and participate in MBI meetings with the FDA, consistent with the Joint Steering
Committee's directions.

        2.02 Products.  The products to be  manufactured by MBI pursuant to this
Article 2 may,  from time to time,  change as the  parties  agree to  additional
formulations of ALBUNEX to be manufactured by MBI pursuant to this Article 2, or
as the parties agree to modify the  specifications  of ALBUNEX then manufactured
by MBI pursuant to this Article 2 (collectively,  the "Specification  Changes").
MBI and  Mallinckrodt may make  Specification  Changes from time to time by both
parties  executing an  amendment to Appendix 5.  Appendix 5 contains the current
specifications for ALBUNEX to be manufactured pursuant to this Article 2.

        2.03 Manufacture.  Subject to Sections  2.14(d)(1)(A),  2.14(d)(2)(A) 
 and 7.01(c),  MBI shall  manufacture ALBUNEX  for, or supply  ALBUNEX to, 
 Mallinckrodt  under the terms and  conditions  of this  Agreement.  [Omitted;
filed separately with the Commission.]

        2.04 Duties of MBI.  MBI shall:

        (a)  Promptly  inform  Mallinckrodt  of any clinical  trials  reasonably
related to ALBUNEX approval and the results thereof and any problems in starting
production,  and  subject to the  consent  of MBI,  which  consent  shall not be
unreasonably  withheld  or  delayed,   Mallinckrodt  shall  have  the  right  to
participate in and assist MBI with any MBI pre-production activities;

        (b) Establish and maintain, with Mallinckrodt's assistance, current Good
Manufacturing  Practices  with  respect  to  the  manufacturing  of  ALBUNEX  in
compliance  with the  requirements of the FDA as such  requirements  shall be in
effect from time to time;

        (c) Ship the  quantities of Albunex  Products  ordered for the first two
calendar quarters of each Forecast that Mallinckrodt provides to MBI pursuant to
Section  2.05(b),  for  delivery  during  those  quarters  in a manner to assure
product  stability.  MBI shall use its best  efforts to deliver  the  quantities
ordered during the  particular  months of each of those quarters as specified in
the Forecast  (but in any event shall  deliver the  quantities  ordered for each
such quarter no later than the last day of the quarter). In addition,  MBI shall
use best efforts to deliver amounts ordered prior to the first Forecast provided
by Mallinckrodt;

        (d)  Prepare  and  deliver  to  Mallinckrodt  a  complete  and  accurate
documentation   package   (including   current  Good   Manufacturing   Practices
documentation  and copies of any filings with the FDA or  corresponding  foreign
agencies in the Territory  relating to ALBUNEX or MBI's  facilities or processes
used to manufacture  ALBUNEX)  concerning the development and  manufacturing  of
ALBUNEX,  name Mallinckrodt as an alternative  manufacturing site in any and all
appropriate  submissions or  applications,  and update such package whenever any
changes occur;

        (e)  Provide  with each  shipment  of  ALBUNEX  a quality  certification
substantially  in the form of Appendix 6  certifying,  among other  things,  the
purity  and  quality  of  materials,  compliance  of  ALBUNEX  with the  Product
Specifications  and  compliance of the  manufacturing  process with current Good
Manufacturing  Practices.  MBI shall also certify that all vials of each Albunex
Product included in the shipment will have a remaining shelf-life, from the date
of  receipt  by   Mallinckrodt  at  the  designated  site  for  delivery  (i.e.,
Mallinckrodt's  designated  warehouse),  at  least  equal to  two-thirds  of the
shelf-life  allowed by the FDA (or the foreign equivalent of the FDA) before the
product is considered out-of-date;

        (f) Promptly  forward to  Mallinckrodt  all inquiries and  complaints it
receives from customers for ALBUNEX and provide Mallinckrodt with any reasonable
assistance  requested by Mallinckrodt in connection with customer  complaints or
product recalls.  Mallinckrodt and MBI shall establish procedures to provide MBI
with the  opportunity to obtain direct  clinical  responses from  Mallinckrodt's
customers,  in the presence of  Mallinckrodt  representatives,  regarding  their
satisfaction with ALBUNEX,  understanding of and training in its use, perception
of its clinical utility, and utilization rates. Mallinckrodt shall provide these
opportunities  to MBI at a minimum of four times per year  through  (among other
possible means, and where considered appropriate by Mallinckrodt)  attendance at
meetings of  Mallinckrodt's  medical advisory  boards,  presence at Mallinckrodt
focus  groups  and  work in the  field  with  Mallinckrodt  sales  or  marketing
representatives.  MBI shall not contact Mallinckrodt's ALBUNEX customers for any
reason whatsoever without the prior written consent of Mallinckrodt, except with
respect to (i) products or services not  contemplated  by this  Agreement,  (ii)
MBI's contacts with  clinicians,  experts and  institutions  in connection  with
MBI's  preclinical  and  clinical  activities  and (iii) MBI's  market  research
studies authorized under and subject to the limitations of this Section 2.04(f).
In order to avoid  potential  confusion  among  customers  about  Mallinckrodt's
exclusive  distributorship,  MBI shall not be an exhibitor of ALBUNEX at medical
trade  shows (for  example,  meetings  of the  American  College of  Cardiology,
American  Heart  Association,  American  Institute of  Ultrasound  and Medicine,
American Society of Echocardiography, and Radiological Society of North America)
or regional  hospital/physician-sponsored  meetings.  MBI may be an exhibitor of
non-ALBUNEX products at these meetings (and its exhibit may indicate that MBI is
the developer of ALBUNEX and manufacturer of ALBUNEX for  Mallinckrodt),  and in
any case, MBI may attend these  meetings and present  papers.  In addition,  MBI
shall not conduct  any  advertising  or  promotional  activities  for ALBUNEX to
Mallinckrodt  customers.  Mallinckrodt  is responsible  for market  research for
ALBUNEX,  but MBI may undertake  limited  market  research  studies for the sole
purpose of identifying desirable additional  indications of ALBUNEX for clinical
development. MBI may conduct such studies subject to the conditions that (i) MBI
provides  Mallinckrodt with copies of all interim and final reports and (ii) MBI
does not single out known Mallinckrodt customers in conducting such studies;

        (g) Undertake to keep  Mallinckrodt  regularly and promptly  informed of
any and all significant medical,  technical,  legal, commercial or other matters
of which it shall gain  knowledge in connection  with the  manufacture or use of
ALBUNEX  or in  connection  with  the  sale of  ALBUNEX  in the  Territory,  the
Additional Territory, [omitted; filed separately with the Commission]. MBI shall
meet with Mallinckrodt periodically,  but not less frequently than quarterly, to
discuss such matters as well as any other  matters  related to ALBUNEX or MBI as
reasonably requested by Mallinckrodt;

        (h) Provide  Mallinckrodt (i) copies of all correspondence,  reports and
other  written  documents  received  by or  provided  by MBI under  the  License
Agreement dated November 5, 1986 between MBI and Steven B.  Feinstein,  M.D., as
amended,  and (ii) prompt notice of any claim,  controversy  or dispute  arising
under or related to such License  Agreement.  MBI shall provide  Mallinckrodt  a
copy of any proposed  amendment or  modification  to such License  Agreement not
less than 30 days prior to its disclosure to or oral  discussion  with Steven B.
Feinstein,   M.D.,  his  attorneys  or   representatives.   In  the  event  that
Mallinckrodt notifies MBI within 10 working days after receipt of such copy from
MBI that Mallinckrodt,  in its reasonable judgment, determines that the proposed
amendment or  modification  is detrimental to  Mallinckrodt,  then MBI shall not
amend or modify such  License  Agreement  without the prior  written  consent of
Mallinckrodt  which consent shall not be unreasonably  withheld.  MBI shall take
all action  necessary to preserve and maintain its rights and license under such
License Agreement;

        (i) Except after prior  consultation  with and the prior written consent
of Mallinckrodt,  which consent shall not be unreasonably withheld, not (a) take
official or formal steps or make any public  announcement to stop or suspend the
sale and  distribution  of ALBUNEX,  or (b) cancel or cause to be cancelled  any
necessary  government  authorizations  regarding  the  use and  distribution  of
ALBUNEX, in the Territory, the Additional Territory,  [omitted; filed separately
with the Commission];

        (j) Cause members of key  management of MBI to devote all necessary time
and effort to the performance of MBI's obligations under this Agreement; and

        (k) Assist Mallinckrodt,  upon its reasonable request, in complying with
applicable laws and government  regulations  affecting the sale and distribution
of ALBUNEX and which are not  otherwise  the  responsibility  of MBI as provided
herein,  provided that Mallinckrodt shall reimburse MBI for any fees paid to any
governmental agency by MBI pursuant to a request under this Section 2.04(k).

        2.05 Duties of Mallinckrodt.  Mallinckrodt shall:

        (a) Comply with applicable laws and governmental  regulations  affecting
the  sale  and  distribution  of  ALBUNEX,  with the  assistance  of MBI,  if so
requested by Mallinckrodt;

        (b) Provide MBI, no later than the first  business day of each  calendar
quarter,  with a  written  four-quarter  forecast  by  month (a  "Forecast")  of
Mallinckrodt's  purchases of ALBUNEX  during that calendar  quarter and the next
three  calendar  quarters.  Each Forecast  shall specify the  quantities of each
Albunex Product that  Mallinckrodt  estimates that it will purchase each quarter
of the Forecast,  by month, and the forecast for the first two calendar quarters
of each Forecast shall be a firm order for those  quarters,  for delivery by MBI
during  those  quarters  in  accordance  with  Section  2.04(c).   In  addition,
Mallinckrodt  shall  provide  MBI, no later than the first  business  day of the
second  and  third  months of each  calendar  quarter,  a written  update of its
forecast of  purchases  of ALBUNEX  for the next 12 months.  All  Forecasts  and
updates shall be made in good faith and with due regard to known demand,  market
conditions and competitive factors;

        (c)  Except as permitted by Section  7.01(c)(1),  during the term 
hereof,  neither  manufacture ALBUNEX nor purchase ALBUNEX from anyone other
than MBI.  [Omitted; filed separately with the Commission]; and

        (d) To the  extent  readily  available  to  Mallinckrodt  prior to MBI's
exercise of either of its options under  Sections  9.01(a) or (b),  Mallinckrodt
shall  provide MBI with (i)  appropriately  detailed  summaries  of internal and
independent market research and pharmacoeconomic  reports,  analyses and studies
relating to ALBUNEX and echocardiography generally and (ii) a yearly estimate of
ALBUNEX market size by Albunex Product (including the underlying assumptions and
the factors influencing such estimate).  This information may be provided at the
marketing meetings held in accordance with Section 3.07(a).

        (e)  Mallinckrodt  shall  promptly  forward to MBI  reasonably  detailed
notice of all  complaints  that  Mallinckrodt  receives  from its  customers for
ALBUNEX.

        2.06 Shipment.

        (a) MBI  shall  ship  ALBUNEX  in a  commercially  reasonable  manner to
Mallinckrodt  sites,  warehouses and freight  forwarders in the United States of
America  and  the  possessions  of the  United  States  of  America  within  the
Territory,  and, if  commercially  reasonable,  on an isolated basis directly to
Mallinckrodt  customers,  all as  Mallinckrodt  may from time to time designate.
[Omitted; filed separately with the Commission.]

        (b) MBI  shall  not  transport  or ship any  ALBUNEX  until  (i) MBI and
Mallinckrodt  shall  have  each  obtained  all  approvals,  authorizations,  and
licenses of any required  governmental  agency or  instrumentality  for shipment
(including, without limitation, any export or import licenses or approvals), and
(ii) MBI and Mallinckrodt have complied with all applicable laws and regulations
regarding  the export,  import,  shipment,  and labeling of ALBUNEX.  Each party
shall  provide  reasonable  assistance  to the  other  party  in  obtaining  the
necessary approvals, authorizations and licenses.

        2.07 F.O.B.  All shipments of ALBUNEX shall be F.O.B. destination.

        2.08  Rejection.  If any  shipment  of ALBUNEX is found by  Mallinckrodt
within  a  reasonable  time  after  delivery  to be  defective  in  material  or
workmanship or otherwise not in conformity  with the Product  Specifications  or
other requirements hereof,  Mallinckrodt,  in addition to any other rights which
it may have under any warranties in this Agreement or otherwise,  may reject and
return such ALBUNEX at MBI's expense,  which goods shall not be replaced without
Mallinckrodt's  prior written  authorization.  Payment for the ALBUNEX shall not
constitute  acceptance.  ALBUNEX  rejected by  Mallinckrodt  which  utilizes any
Mallinckrodt name, trade name, trademark, insignia, symbol, decorative design or
evidence of  Mallinckrodt's  purchase or inspection  shall have the same removed
prior to any  disposition  by MBI.  MBI shall  indemnify  Mallinckrodt  from any
claim, loss or damage arising out of any failure of MBI so to do.

        2.09 Mallinckrodt Trademarks.

        (a) MBI shall not have any right,  title or interest in or to, and shall
not in any respect use, the Mallinckrodt name or logo.

        (b)  Mallinckrodt  shall  have the  right  to  market  and sell  ALBUNEX
provided by MBI pursuant to this Article 2 under any trademark Mallinckrodt,  in
its discretion after consultation with MBI, deems appropriate.

        (c) The packaging for ALBUNEX  provided by MBI to Mallinckrodt  pursuant
to this Article 2 shall be consistent  with the packaging  provided by MBI as of
the  Effective  Date  and  shall  include  all  product  inserts.  MBI  shall be
responsible  for all costs of such  packaging  except  that  Mallinckrodt  shall
provide the artwork in connection  with such  packaging.  Mallinckrodt  shall be
responsible for all costs of additional  packaging or re-packaging,  if any, for
shipment to customers.

        (d) All final  packaging,  including  product inserts and labels,  shall
make  appropriate  reference to MBI  including  when  Mallinckrodt  manufactures
ALBUNEX.

        2.10 Product  Literature.  MBI shall provide to Mallinckrodt  technical,
performance  and  testing  information,  and any other such  information  as may
reasonably  be requested by  Mallinckrodt  to assist in the  production of sales
material,  product inserts,  packaging, user instructions or other similar items
for  ALBUNEX.  Mallinckrodt  shall  provide MBI with  representative  samples of
product promotional and sales literature prior to release.

        2.11 Insurance.

        (a)  Prior  to  the  Launch  Date,  MBI  shall  take  out  and  maintain
comprehensive   general  liability   insurance,   including  products  liability
insurance,  with minimum  limits of  $5,000,000  combined for bodily  injury and
property damage liabilities. Such insurance shall have both foreign and domestic
coverage  with the coverage  applying  worldwide  regardless of where a claim is
filed, except for the countries/territories of Cuba, Vietnam,  Campuchea,  Laos,
North Korea and Outer  Mongolia.  MBI shall have the option to  self-insure  its
obligations  under this  Agreement so long as MBI's net worth,  as determined in
accordance with generally acceptable accounting principles consistently applied,
exceeds  $50,000,000.  MBI  shall  furnish  a  certificate  of  insurance  or of
self-insurance  to Mallinckrodt  evidencing the foregoing  coverage and required
limits of liability prior to the Launch Date.

        (b) Prior to the Launch Date,  Mallinckrodt shall maintain comprehensive
general  liability  insurance,  including  products  liability  insurance,  with
minimum  limits of  $5,000,000  combined for bodily  injury and property  damage
liabilities.  Such insurance shall have both foreign and domestic  coverage with
the coverage applying worldwide regardless of where a claim is filed, except for
the  countries/territories  of Cuba, Vietnam,  Campuchea,  Laos, North Korea and
Outer  Mongolia.   Mallinckrodt   shall  have  the  option  to  self-insure  its
obligations  under this Agreement.  Mallinckrodt  shall furnish a certificate of
insurance or of  self-insurance  to MBI  evidencing  the foregoing  coverage and
required limits of liability prior to the Launch Date.

      2.12 Inspection and Payment for Samples and Research and Trial Quantities.

        (a)  Mallinckrodt  shall have the right during normal  business hours to
inspect  (x) upon not less  than 10  business  days  prior  notice  and not more
frequently than once during each calendar quarter,  MBI's business and financial
records  relating to the  manufacture,  use or sale of ALBUNEX in the Territory,
the Additional Territory, [omitted; filed separately with the Commission] or any
other  obligation  of MBI  under  this  Agreement,  and (y) upon not less than 5
business days prior  notice,  MBI's  facilities  and  operations,  and any other
scientific data and information relating to ALBUNEX, or the manufacture,  use or
sale of ALBUNEX in the Territory,  the  Additional  Territory,  [omitted;  filed
separately  with the  Commission],  in order to  insure  that  ALBUNEX  is being
manufactured  in compliance with current Good  Manufacturing  Practices and that
the other  terms and  conditions  of this  Agreement  are being  met,  provided,
however,  Mallinckrodt  shall have the right to conduct such inspection  without
prior  notice  to MBI  no  more  frequently  than  once  per  calendar  quarter.
Mallinckrodt's  right of  inspection  shall  not  extend to MBI's  business  and
financial records relating to the Nycomed Agreement or the Shionogi Agreement.

        (b) Mallinckrodt may, but shall not be obligated to, sample any shipment
of ALBUNEX to verify the  accuracy  of MBI's  certificate  described  in Section
2.04(e). In connection with the marketing and promotion of ALBUNEX, Mallinckrodt
may, but shall not be obligated to,  provide  samples of ALBUNEX to customers or
potential customers free of charge.

        (c) Mallinckrodt shall be obligated to pay MBI for any sample of ALBUNEX
used for the  purposes  described  in  Section  2.12(b) on the same basis as any
other ALBUNEX sold to Mallinckrodt under this Agreement.

        (d) Mallinckrodt shall pay MBI for ALBUNEX used for research, including,
but not limited to,  preclinical and clinical studies,  on the same basis as any
other ALBUNEX sold to Mallinckrodt under this Agreement, with the exception that
the  price of  ALBUNEX  consisting  of a  formulation  or  configuration  for an
indication  not yet  approved  for  sale  shall  be the sum of  [omitted;  filed
separately  with the  Commission],  all such  calculations  to be performed on a
per-vial basis in accordance with U.S. generally accepted accounting principles.
Within  the first 60 days  after the start of each MBI  fiscal  year,  MBI shall
calculate  the price under this  exception  on the basis of its costs during its
preceding  fiscal  year,  and the price thus  calculated  shall remain in effect
until MBI recalculates the price the next fiscal year. For the first fiscal year
in which MBI provides such ALBUNEX,  however,  MBI shall  calculate the price on
the basis of its  reasonable  estimate  of its costs  per vial  [omitted;  filed
separately with the Commission],  taking into account Mallinckrodt's  reasonable
estimate of its demand for such ALBUNEX  through the period ending 60 days after
the close of the current fiscal year (or if for any reason Mallinckrodt fails to
provide  such an  estimate  within  30  days  after  MBI's  request,  MBI's  own
reasonable estimate of Mallinckrodt's  demand).  Mallinckrodt shall have a right
of audit once each fiscal year regarding MBI's  calculation of the price similar
in scope to the right of audit afforded MBI under Section 2.14(c).  MBI will use
its best  efforts to meet  Mallinckrodt's  forecast  demand for ALBUNEX used for
research.

        2.13 Final Quality Control,  Testing and Release.  MBI shall perform the
final quality control testing, further processing, labeling of final containers,
and final release on ALBUNEX.

        2.14 Price.

        (a) Mallinckrodt shall deliver to MBI, within 60 days after the start of
each calendar  quarter,  a true and accurate report of the Average Selling Price
of each Albunex Product sold during the preceding calendar quarter.  This report
shall include all relevant details,  including gross sales, all adjustments used
to derive Net Sales and  number of vials  shipped to  purchasers.  In  addition,
Mallinckrodt  shall provide MBI with monthly sales reports no later than 30 days
after the end of each month. Each monthly sales report shall include, by Albunex
Product, (i) the total number of vials sold by package  configuration,  (ii) the
number of new  accounts,  (iii) the  number of repeat  orders and (iv) the total
United States dollar value of monthly end-user sales. Mallinckrodt may omit from
any monthly  sales  report the number of new  accounts  and the number of repeat
orders if that  information  is not readily  available to  Mallinckrodt  at that
time. If Mallinckrodt  omits any such information for this reason,  Mallinckrodt
shall  promptly  provide the  information  to MBI at its request if and when the
information becomes readily available to Mallinckrodt.

        (b)  Mallinckrodt  shall pay MBI for each  order of  ALBUNEX  shipped to
Mallinckrodt by MBI an amount equal to sum of the separately  calculated amounts
for each Albunex Product included in the shipment  determined by multiplying the
number of vials of each  such  Albunex  Product  in the  shipment  by 40% of the
Average  Selling  Price for that Albunex  Product  during the  calendar  quarter
preceding the calendar  quarter of shipment.  (If the Average  Selling Price for
that quarter is not yet known,  the Average  Selling  Price for second  calendar
quarter  preceding the calendar quarter of shipment shall be used.) With respect
to vials of an Albunex  Product  intended  for sale in a country  where vials of
that  product  have not  previously  been sold  (and for which  there is thus no
Average Selling Price for the preceding calendar quarter),  Mallinckrodt and MBI
shall consult in good faith regarding the price to be paid by Mallinckrodt until
an Average Selling Price is determined.  Payments shall be made in United States
dollars and shall be due no later that 60 days after the date of MBI's shipment.

        (c)  Mallinckrodt  shall keep full,  true and accurate  books of account
containing all particulars which may be necessary for the purpose of determining
the Average Selling Price of each Albunex Product.  Mallinckrodt  agrees, at the
request  of MBI  and at  MBI's  expense,  to  permit  an  independent  certified
accountant  selected by MBI and reasonably  acceptable to  Mallinckrodt,  access
upon at least 10  business  days  prior  notice and no more than once a calendar
quarter to such books of  account  for the  purpose  of  verifying  the  reports
described in Section 2.14(a).  Such accountant shall not be entitled to disclose
any  information  relating  to the  business of  Mallinckrodt  except that which
should be properly contained in any statement required in Section 2.14(a).

        (d)  Mallinckrodt  shall inform MBI of  Mallinckrodt's  proposed initial
pricing of each new Albunex  Product.  If the  proposed  intial price of any new
Albunex Product is less than [omitted;  filed  separately with the  Commission],
MBI may decline to manufacture that product for Mallinckrodt upon written notice
to Mallinckrodt. Similarly, if the Average Selling Price of any existing Albunex
Product is less than [omitted;  filed separately with the  Commission],  MBI may
decline to continue to manufacture that product for  Mallinckrodt  upon 60 days'
prior written notice to  Mallinckrodt.  If MBI declines to  manufacture  any new
Albunex Product,  Mallinckrodt may exercise any one of the options under Section
2.14(d)(1)  by  written  notice to MBI  delivered  not more  than 60 days  after
Mallinckrodt's  receipt of MBI's  notice that MBI declines to  manufacture  that
product.   If  MBI  declines  to  manufacture  any  existing   Albunex  Product,
Mallinckrodt  may exercise any one of the options under  Sections  2.14(d)(1) or
(2),  as  applicable,  by  written  notice  to MBI not more  than 60 days  after
Mallinckrodt's  receipt  of  MBI's  notice  that MBI  declines  to  continue  to
manufacture that product.

             (1) In the  case of a new  Albunex  Product,  or in the  case of an
        existing Albunex Product which is not described in Section 2.14(d)(2):

                  (A)  Mallinckrodt  may  manufacture  the  Albunex  Product  in
             question,  and,  with  respect to any calendar  quarter,  pay MBI a
             royalty equal to 40% of the amount  determined by multiplying  that
             product's Average Selling Price during the quarter by the number of
             vials  of  that  product  sold  during  that   quarter,   less  (i)
             Mallinckrodt's fully allocated  manufacturing cost for that Albunex
             Product  determined  using  U.S.   generally  accepted   accounting
             principles,   and  (ii)  until   fully   recovered,   one-half   of
             Mallinckrodt's  Start-up Costs not included in (i); but in no event
             shall such  royalty  be less than 5% or more than 10%.  On 90 days'
             notice to  Mallinckrodt at any time after the Average Selling Price
             of  that  Albunex  Product  has  been  at  least  [omitted;   filed
             separately with the Commission],  MBI may terminate  Mallinckrodt's
             right to  manufacture  under this Section  2.14(d)(1)(A)  and begin
             manufacturing  that Albunex Product itself as provided generally in
             this Agreement  (i.e.,  not as provided in Section  2.14(d)(1)(B)).
             Mallinckrodt  shall  pay the  royalty  described  in  this  Section
             2.14(d)(1)(A)  pursuant  to the  procedures  set forth in  Sections
             7.01(c)(2)(E)  (payment  terms)  and (F)  (currency).  Mallinckrodt
             agrees,  at the request of MBI and at MBI's  expense,  to permit an
             independent  certified  accountant  selected by MBI and  reasonably
             acceptable to Mallinckrodt,  access upon at least 10 business days'
             prior notice and no more than once a calendar quarter, to audit and
             verify  Mallinckrodt's  costs and  calculations  under (i) and (ii)
             above.  If  Mallinckrodt  exercises  its option  under this Section
             2.14(d)(1)(A),  it may not later  exercise its option under Section
             2.14(d)(1)(B)  but may later  exercise  its  option  under  Section
             2.14(d)(1)(C);

                  (B)  Mallinckrodt  may require MBI to manufacture  the Albunex
             Product in question  (notwithstanding  MBI's notice to Mallinckrodt
             that MBI declines to manufacture or to continue to manufacture that
             product),  and agrees that,  notwithstanding  Section 2.14(b),  the
             price to be paid by  Mallinckrodt  to MBI for that Albunex  Product
             shall  be  the  lesser  of  [omitted;  filed  separately  with  the
             Commission].  Mallinckrodt  shall pay this amount in United  States
             dollars no later than 60 days after the date of MBI's shipment, and
             MBI  shall  maintain  full,  true and  accurate  books  of  account
             containing all  particulars  which may be necessary for the purpose
             of determining  the  alternative  prices  described in this Section
             2.14(d)(1)(B). On 90 days' notice to Mallinckrodt at any time after
             the Average Selling Price of that Albunex Product has been at least
             [omitted; filed separately with the Commission],  MBI may terminate
             Mallinckrodt's  right to  require  MBI to  manufacture  under  this
             Section  2.14(d)(1)(B) and begin manufacturing that Albunex Product
             itself  as  provided  generally  in this  Agreement  (i.e.,  not as
             provided in this Section 2.14(d)(1)(B)). MBI agrees, at the request
             of  Mallinckrodt  and  at  Mallinckrodt's  expense,  to  permit  an
             independent  certified  accountant  selected  by  Mallinckrodt  and
             reasonably  acceptable  to MBI,  access  upon at least 10  business
             days'  prior  notice and no more than once a calendar  quarter,  to
             audit and verify MBI's costs. If Mallinckrodt  exercises its option
             under this Section  2.14(d)(1)(B),  it may later exercise either of
             its options under Sections 2.14(d)(1)(A) and (C); or

                  (C) If the  Albunex  Product  in  question  is a new  product,
             Mallinckrodt  may cancel or postpone  launch of the commercial sale
             of that  product,  and if the  Albunex  Product in  question  is an
             existing product, Mallinckrodt may cancel or suspend the commercial
             sale of that  Albunex  Product  (in either  case  without  being in
             breach or default under this  Agreement or losing  exclusivity as a
             result).  If  Mallinckrodt  exercises its option under this Section
             2.14(d)(1)(C),  it may later  exercise  either of its options under
             Sections 2.14(d)(1)(A) and (B).

             (2) In the case of an  existing  Albunex  Product  the Net Sales of
        which during each of [omitted;  filed separately with the Commission] in
        which its Average Selling Price was less than [omitted; filed separately
        with the Commission] represent less than [omitted; filed separately with
        the Commission] in the same territory of all identical  Albunex Products
        (except in respect of labelling):

                  (A)  Mallinckrodt  may  manufacture  the  Albunex  Product  in
             question,   and  pay  MBI  no  royalty.   On  90  days'  notice  to
             Mallinckrodt  at any time after the Average  Selling  Price of that
             Albunex Product has been at least [omitted;  filed  separately with
             the  Commission],   MBI  may  terminate   Mallinckrodt's  right  to
             manufacture   under   this   Section    2.14(d)(2)(A)   and   begin
             manufacturing  that Albunex Product itself as provided generally in
             this Agreement (i.e., not as provided in Section 2.14(d)(2)(B)). If
             Mallinckrodt exercises its option under this Section 2.14(d)(2)(A),
             it may not later exercise its option under  Sections  2.14(d)(2)(B)
             but may later exercise its option under Section 2.14(d)(2)(C);

                  (B)  Mallinckrodt  may require MBI to manufacture  the Albunex
             Product in question  (notwithstanding  MBI's notice to Mallinckrodt
             that MBI declines to continue to  manufacture  that  product),  and
             agrees that,  notwithstanding Section 2.14(b), the price to be paid
             by  Mallinckrodt  to MBI for that  product  shall be the  lesser of
             [omitted; filed separately with the Commission]. Mallinckrodt shall
             pay this  amount in United  States  dollars  no later  than 60 days
             after the date of MBI's shipment, and MBI shall maintain full, true
             and accurate books of account  containing all particulars which may
             be necessary for the purpose of determining the alternative  prices
             described  in this  Section  2.14(d)(2)(B).  On 90 days'  notice to
             Mallinckrodt  at any time after the Average  Selling  Price of that
             Albunex Product has been at least [omitted;  filed  separately with
             the Commission],  MBI may terminate Mallinckrodt's right to require
             MBI to  manufacture  under  this  Section  2.14(d)(2)(B)  and begin
             manufacturing  that Albunex Product itself as provided generally in
             this   Agreement   (i.e.,   not  as   provided   in  this   Section
             2.14(d)(2)(B)).  MBI agrees,  at the request of Mallinckrodt and at
             Mallinckrodt's   expense,   to  permit  an  independent   certified
             accountant  selected by Mallinckrodt  and reasonably  acceptable to
             MBI,  access  upon at least 10 business  days' prior  notice and no
             more than once a calendar quarter, to audit and verify MBI's costs.
             If   Mallinckrodt   exercises   its  option   under  this   Section
             2.14(d)(2)(B),  it may later  exercise  either of its options under
             Sections 2.14(d)(1)(A) and (C); or

                  (C)  Mallinckrodt may cancel or suspend the commercial sale of
             the Albunex product in question (without being in breach or default
             under  this  Agreement  or  losing  exclusivity  as a  result).  If
             Mallinckrodt exercises its option under this Section 2.14(d)(2)(C),
             it  may  later  exercise  either  of  its  options  under  Sections
             2.14(d)(2)(A) and (B).

        2.15 Funding of Further ALBUNEX Development.

        (a)  Mallinckrodt shall pay MBI $20 million for the further development
        of ALBUNEX, as follows:

             (1) $1 million on the first day of each of the four quarters  (each
        of three calendar  months),  beginning with the quarter  starting on the
        first day of the first  calendar  month  beginning  after the  Effective
        Date;

             (2)  $1.25  million  on the  first  day of each of the  next  eight
        quarters,  beginning with the quarter starting on the first  anniversary
        of the  first  day of the  first  calendar  month  beginning  after  the
        Effective Date; and

             (3)  $1.5  million  on the  first  day of  each  of the  next  four
        quarters,  beginning with the quarter starting on the third  anniversary
        of the  first  day of the  first  calendar  month  beginning  after  the
        Effective Date.

Consistent with the guiding principles  described in Section 2.16(b),  the Joint
Steering  Committee,  by a unanimous  vote of its members and written  notice to
Mallinckrodt,  may  direct the  acceleration  of these  payments  at any time by
increasing  the amount of the next  payment or  payments  that  Mallinckrodt  is
required to make and reducing the last  payment that  Mallinckrodt  is otherwise
required  to make by the  same  amount  as the  aggregate  increase  (and if the
aggregate  increase exceeds the amount of the last payment that  Mallinckrodt is
required to make,  reducing the amount of each prior payment in turn,  beginning
with  the  next-to-last  payment  that  Mallinckrodt  is  required  to make  and
proceeding in reverse  chronological order, until the aggregate reductions equal
the  aggregate  increase).  Payment shall be made by wire transfer to an account
designated by MBI. Mallinckrodt  representatives on the Joint Steering Committee
shall not be required to (but may) vote in favor of any acceleration proposed by
the MBI  representatives  on the Committee.  Any dispute regarding  acceleration
shall not be subject to Section 2.16(c).

        (b) MBI shall spend at least $10  million on clinical  trials to support
regulatory  filings in the United States for cardiac  indications of ALBUNEX and
the related compilation, analysis and presentation of clinical results and other
ancillary activities, as directed by the Joint Steering Committee.

        (c) After MBI has spent $10 million in accordance with Section  2.15(b),
as demonstrated by the submission of appropriate  cost reports to  Mallinckrodt,
MBI and  Mallinckrodt  shall share  equally in the costs,  up to a maximum of $5
million  on a  combined  basis  (i.e.,  $2.5  million  for each  party),  of any
additional  clinical  trials in the United  States for  cardiac  indications  of
ALBUNEX which the Joint Steering Committee,  by a unanimous vote of its members,
may direct to be performed.  MBI shall submit cost reports to  Mallinckrodt on a
monthly basis,  and  Mallinckrodt  shall reimburse MBI for one-half of the total
amount  shown on each cost  report no later  than 30 days  after  receipt of the
report  (up to a maximum  aggregate  reimbursement  of $2.5  million).  After $4
million has been spent on additional clinical trials, MBI and Mallinckrodt shall
consult with one another  regarding the  desirability  of increasing the maximum
amount to be spent under this Section  2.15(c).  Neither party shall be required
to agree to an increase in the maximum amount. Any dispute regarding an increase
in the maximum shall not be subject to Section 2.16(c).

        (d) MBI  shall  spend at  least  $10  million  on  ALBUNEX  development,
including,  but not limited  to, the  development  of new  ALBUNEX  indications,
products and processes,  related  preclinical  and clinical  studies and trials,
intellectual  property  protection,   ALBUNEX   manufacturing   maintenance  and
development (including manufacturing overhead) and compliance with FDA and state
regulatory   requirements   (including  required  filings  and  submissions  and
necessary validations, qualifications and other approvals and proceedings).

        (e) MBI  shall  keep  true  and  accurate  records  of its  expenditures
described in Sections 2.15(b),  (c) and (d).  Mallinckrodt shall have a right of
audit regarding these  expenditures  similar in frequency and scope to the right
of audit afforded MBI in Section 2.14(c).

        2.16 Joint Steering  Committee.  MBI and Mallinckrodt  shall establish a
joint  steering  committee  (the "Joint  Steering  Committee")  to review,  on a
quarterly  basis (or more  frequently  as requested by either  party),  clinical
trial programs  relating to the development and regulatory  approval of ALBUNEX,
with a  particular  emphasis  on  reviewing  the  design and  implementation  of
clinical trials and any Investigational  Device Exemption or Investigational New
Drug applications to the FDA (including  related  amendments and other ancillary
filings) and  corresponding  filings with  foreign  equivalents  of the FDA. The
Committee  is  intended  to provide a  mechanism  to enable the parties to share
their expertise and concerns relating to clinical  programs,  regulatory affairs
and  cost-effectiveness  and  reimbursement  issues,  and shall have significant
authority and  flexibility in determining  the  objectives,  number,  design and
other  features  of clinical  trials,  with a view to  maximizing  the return on
development costs and expediting commercialization.  The Committee shall consist
of  equal  numbers  of MBI and  Mallinckrodt  representatives  and  shall  adopt
procedures  to govern its  activities  substantially  in the form  described  on
Appendix 7.

        (a) The Joint Steering Committee shall have the authority to specify the
clinical  trials and other  activities  required to be performed  under  Section
2.15(b)  and the  additional  clinical  trials  required to be  performed  under
Section  2.15(c),  and MBI shall not make any expenditure  under either of those
Sections without the Committee's prior  authorization.  The Committee shall have
no authority regarding the allocation or expenditure of the $10 million that MBI
is required to spend under Section 2.15(d) (or any other expenditures by MBI).

        (b) The  Joint  Steering  Committee's  decisions  shall be guided by the
following principles, emphasizing both quality and speed:

             (1) it is very  important  to  bring a  product  to  market  in the
        shortest possible time consistent with the prevailing regulatory climate
        (but the quality of the clinical program, including clinical utility and
        cost-effectiveness, is equally important);

             (2)  it is important  that clinical  studies be conducted  and 
        their results  presented in a thorough, well-organized and professional
        manner; and

             (3)  the  Committee's  decisions  should  be made  with a sense  of
        urgency consistent with the prevailing regulatory climate,  applying the
        standard of a prudent  businessman  who has a lead over his  competitors
        and wants to maintain  that lead,  and with a view towards  operating by
        consensus  and in a  manner  intended  to  emphasize  partnership  and a
        commonality of interests.

        (c) In the event of a dispute  over a matter  within the Joint  Steering
Committee's  purview  that  cannot  be  resolved  by  the  Committee,   MBI  and
Mallinckrodt  shall  attempt to resolve the dispute  informally  in light of the
guiding  principles in Section  2.16(b).  If MBI and  Mallinckrodt are unable to
resolve the  dispute,  they shall each  designate  as a referee an  unaffiliated
person with senior-level  credentials in the medical,  scientific,  clinical and
administrative  areas  relevant  to the  Committee's  activities,  and  the  two
referees  shall  attempt to  resolve  the  dispute.  If they are unable to do so
within a  reasonable  period,  they shall  jointly  appoint a third  person with
similar  qualifications  to act as an  arbitrator.  In reaching a decision,  the
arbitrator shall take into account such matters as he considers appropriate, and
may require the parties to provide a written  statement or oral  presentation in
support  of their  respective  positions.  The  arbitrator's  decision  shall be
binding  on MBI and  Mallinckrodt.  During  the  pendency  of the  dispute,  (i)
Mallinckrodt  shall not withhold  (and  neither the referees nor any  arbitrator
appointed by them shall have authority to excuse or delay) any payments due from
Mallinckrodt to MBI under this Agreement and (ii) MBI shall deposit all payments
received from Mallinckrodt under Section 2.15 during the pendency of the dispute
in a  segregated  account  in  MBI's  name.  This  account  may be  invested  in
short-term  U.S.  Treasury  obligations  or in  any  other  manner  approved  by
Mallinckrodt (which shall not unreasonably  withhold its approval),  and MBI may
transfer the earnings to its general  operating  accounts.  MBI and Mallinckrodt
shall each pay the fees and expenses of its own referee and one-half of the fees
and expenses of any arbitrator that the two referees appoint.

        (d) The authority of the Joint Steering  Committee shall cease,  and the
Joint Steering  Committee shall be disbanded,  on the later of (i) the date that
the FDA approves an intravenous  myocardial  perfusion indication of ALBUNEX for
sale in the United States or (ii) that date that MBI has expended, in accordance
with the direction of the Joint  Steering  Committee (by a unanimous vote of its
members),  the $10 million that MBI is required to spend under  Section  2.15(b)
and the $5 million that MBI may be required to spend under  Section  2.15(c) (as
this latter amount may be increased by agreement of the parties).

        2.17 Additional Payments.  Mallinckrodt shall make the following 
payments to MBI:

        (a)  $3 million on the date when [omitted; filed separately with the 
              Commission];

        (b)  $4 million upon [omitted; filed separately with the Commission];

        (c)  $2 million upon the earlier of [omitted; filed separately with the
              Commission]; and

        (d)  $3 million upon [omitted; filed separately with the Commission].

                                    Article 3

                               Distribution Rights

        3.01 Appointment  as  Distributor  and  Sales  Representative.   MBI
  hereby  appoints  Mallinckrodt,   and
Mallinckrodt hereby accepts appointment, as:

        (a)  the exclusive distributor and exclusive sales representative for
ALBUNEX to be sold in and throughout the Territory;

        (b)  the exclusive distributor and exclusive sales representative for
ALBUNEX to be sold in and throughout the Additional Territory, subject to 
Section 3.02(a);

        (c)  [omitted; filed separately with the Commission]; and

        (d)  [omitted; filed separately with the Commission].

Subject to the limitations  contained in Sections  9.01(a) and (b) and 9.06, the
appointments  pursuant to this Section 3.01 are non-cancellable  during the term
of this Agreement.

        3.02  Qualifications  on Exclusivity.  Mallinckrodt's  appointment under
Sections 3.01(b),  (c), and (d) as the exclusive distributor and exclusive sales
representative  for ALBUNEX sold in the Additional  Territory,  [omitted;  filed
separately  with the  Commission],  respectively,  is subject  to the  following
qualifications:

        (a) At MBI's option, Mallinckrodt's appointment under Section 3.01(b) as
the exclusive distributor and exclusive sales representative for ALBUNEX sold in
the Additional  Territory shall become  co-exclusive  if  Mallinckrodt  fails to
achieve any of the non-monetary performance milestones listed on Appendix 8A;

        (b)  [Omitted; filed separately with the Commission]; and

        (c)  [Omitted; filed separately with the Commission].

MBI may exercise any of these options at any time after  Mallinckrodt's  failure
to achieve any of the applicable performance milestones within the time required
for  performance  (as that time may be extended in accordance  with the notes to
Appendices 8A, 8B and 8C), and if MBI does so, Mallinckrodt's appointment as the
exclusive distributor and exclusive sales representative for ALBUNEX sold in the
affected  territory  shall  become  co-exclusive  in (and only in) the  affected
territory  upon MBI's  written  notice to that effect to  Mallinckrodt.  In this
event,  MBI may (i)  directly,  or through an Affiliate of MBI,  make,  sell and
distribute ALBUNEX for its own account in the affected territory or (ii) license
its  right  to do so  to a  single  third  party,  in  either  case  subject  to
Mallinckrodt's continuing rights under this Agreement in the affected territory.
In either case:

             (w) MBI shall  continue  to sell to  Mallinckrodt  pursuant  to the
        terms of Article 2 a  reasonable  quantity  of  ALBUNEX  to ensure  that
        Mallinckrodt has adequate  inventories of ALBUNEX to satisfy  reasonably
        foreseeable demand in the affected territory;

             (x) all of Section 2.04(f) except the first sentence shall 
        terminate in respect of the affected territory;

             (y) the the following  provisions shall terminate in respect of the
        affected  territory on the date that Mallinckrodt  begins to manufacture
        ALBUNEX for  commercial  sale in the affected  territory:  the first two
        sentences of Section 2.03;  Sections 2.04(c),  (e), (g), (i)(a) and (j);
        Sections 2.05(b), (c) and (d); Section 2.06(a);  Sections 2.07 and 2.08;
        Section 2.09(c);  Sections 2.10 and 2.11; Sections 2.12(a), (b) and (c);
        Sections  2.13 and 2.14;  Sections  3.05,  3.06 and  Section  3.07;  and
        Sections 7.04 and 7.05; and

             (z) MBI shall be  relieved  of its  obligation  to sell  ALBUNEX to
        Mallinckrodt  for  sale  in the  affected  territory  on the  date  that
        Mallinckrodt  begins to  manufacture  ALBUNEX  for sale in the  affected
        territory.

        3.03 [Omitted; filed separately with the Commission.]

        (a)  [Omitted; filed separately with the Commission.]

        (b)  [Omitted; filed separately with the Commission.]

        (c)  [Omitted; filed separately with the Commission.]

        (d)  [Omitted; filed separately with the Commission.]

        (e)  [Omitted; filed separately with the Commission.]

        (f)  [Omitted; filed separately with the Commission.]

        3.04 [Omitted; filed separately with the Commission.]

        (a)  [Omitted; filed separately with the Commission.]

        (b)  [Omitted; filed separately with the Commission.]

             (1)  [Omitted; filed separately with the Commission.]

             (2)  [Omitted; filed separately with the Commission.]

             (3)  [Omitted; filed separately with the Commission.]

             (4)  [Omitted; filed separately with the Commission.]

             (5)  [Omitted; filed separately with the Commission.]

[Omitted; filed separately with the Commission.]

        (c)  [Omitted; filed separately with the Commission.]

        (d)  [Omitted; filed separately with the Commission.]

        3.05 Duties of MBI.In addition to its other duties hereunder, MBI shall:

        (a) Use  reasonable  efforts to assist in  Mallinckrodt's  promotion  of
ALBUNEX  throughout the Territory,  the Additional  Territory,  [omitted;  filed
separately  with  the  Commission],  in  support  of  Mallinckrodt's  respective
marketing plans for those territories;

        (b) Provide such technical  assistance to Mallinckrodt in the marketing,
sale and  distribution  of ALBUNEX in the Territory,  the Additional  Territory,
[omitted;  filed  separately with the  Commission],  as  Mallinckrodt  requests,
including  the  dedication  at  any  given  time  of up to a  maximum  of 10 MBI
employees as technical  sales  specialists.  Each such request shall specify the
nature and extent of the assistance required, and shall be reasonable in respect
of the type of assistance requested and the resources, time and cost required to
render  that  assistance.   MBI  shall  advise  Mallinckrodt  if  MBI  considers
Mallinckrodt's request unreasonable, and the parties shall attempt in good faith
to resolve their differences;

        (c) Provide  assistance as  reasonably  requested by  Mallinckrodt  with
respect to customer service activities  including technical support services and
sales administrative support services; and

        (d)  Provide   support  and   assistance   in   establishing   efficient
communications between Mallinckrodt and MBI for shipping information, invoicing,
complaints  and customer  relations  information  including  support of computer
communications systems for information flow.

        3.06 Duties of Mallinckrodt. In addition to its other duties hereunder, 
Mallinckrodt shall:

        (a) Treat  ALBUNEX as an important  contrast  product in the same manner
Mallinckrodt  traditionally  markets its important contrast line of products for
purposes of  Mallinckrodt's  pre-marketing,  marketing,  sales and  distribution
efforts  and  expenditures.  Mallinckrodt's  marketing,  sales and  distribution
efforts  regarding  ALBUNEX  shall  place  emphasis  on  all  relevant  clinical
indications of ALBUNEX, market segments and appropriate  geographical regions in
the Territory,  the Additional  Territory,  [omitted;  filed separately with the
Commission], and the recruitment of medical and scientific opinion leaders;

        (b) Provide an adequate  sales  organization  and  facilities  to assure
adequate  sales  representation,  prompt  handling of inquiries and orders,  and
attention  to  customer  service  requirements  for  ALBUNEX  in  support of the
activities described in Section 3.06(a);

        (c) Comply with applicable laws and governmental  regulations  affecting
the sale and distribution of ALBUNEX in the Territory, the Additional Territory,
[omitted; filed separately with the Commission],  with the assistance of MBI, if
so requested by Mallinckrodt;

        (d)  Provide   support  and   assistance   in   establishing   efficient
communications between Mallinckrodt and MBI for shipping information, invoicing,
complaints  and customer  relations  information  including  support of computer
communication systems for information flow;

        (e)  Provide sales order entry and technical assistance including
customer service; and

        (f) Provide  such  technical  assistance  to MBI in the  development  of
ALBUNEX as MBI  requests.  Each such request shall specify the nature and extent
of the  assistance  required,  and shall be reasonable in respect of the type of
assistance  requested and the  resources,  time and cost required to render that
assistance.  Mallinckrodt  shall  advise  MBI if  Mallinckrodt  considers  MBI's
request  unreasonable,  and the parties  shall  attempt in good faith to resolve
their differences.

        3.07 Marketing.

        (a) At least two senior level  representatives  designated by MBI and at
least two senior level representatives  designated by Mallinckrodt shall meet no
less  frequently  than quarterly to discuss  Mallinckrodt's  marketing plans and
strategy  for  ALBUNEX  and the  implementation  and  efficacy  of those  plans.
Promptly after the plan is approved  internally  each year,  Mallinckrodt  shall
provide MBI with an  appropriately  detailed  summary of  Mallinckrodt's  annual
marketing and sales plan for ALBUNEX for MBI's internal use.

        (b)  Mallinckrodt  shall,  from time to time and in its sole discretion,
establish  the prices at which  ALBUNEX  shall be sold by it or its  Affiliates.
Terms of all sales,  including but not limited to credit, billing and shipments,
shall be established by Mallinckrodt in its sole discretion.

                                    Article 4

                                    Payments

        4.01  Milestone  Payments.   Subject  to  the  limitations,   terms  and
conditions  contained in this Agreement,  Mallinckrodt  shall pay to MBI (i) the
sum of $6,000,000  United States dollars by cashier's  check or by wire transfer
in  immediately  available  funds upon  execution of this Agreement and (ii) the
following  amounts  by  cashiers'  check  or by  wire  transfer  in  immediately
available funds if, and only if, the particular  stated milestone is achieved by
MBI:

        (a) Phase III of Human Clinical  Trials.  $3,333,000 due in 4 successive
quarterly  installments of $833,250 each,  with the first quarterly  installment
payable  30 days  after  the  date  MBI  provides  Mallinckrodt  written  notice
accompanied by supporting documentation that MBI has commenced the initial Phase
III of the first Human  Clinical  Trials for ALBUNEX with an  indication  as set
forth in Appendix 4;

        (b)  FDA   Application.   $3,333,000  due  in  4  successive   quarterly
installments of $833,250 each, with the first quarterly  installment  payable 30
days after the date MBI provides  Mallinckrodt  written  notice  accompanied  by
supporting  documentation  that MBI has  submitted to the FDA either its initial
PMA application or its initial NDA application for ALBUNEX;

        (c)  FDA  Acceptance  of  Application.  $3,334,000  due in 4  successive
quarterly  installments of $833,500 each,  with the first quarterly  installment
payable  30 days  after  the  date  MBI  provides  Mallinckrodt  written  notice
accompanied by supporting  documentation  that the FDA has accepted either MBI's
initial PMA application or initial NDA application for ALBUNEX;

        (d) FDA Approval.  $8,000,000 due in 4 successive quarterly installments
of $2,000,000 each, with the first quarterly  installment  payable 30 days after
the date MBI provides  Mallinckrodt  written notice accompanied by a copy of the
FDA initial  approval letter that the FDA has issued its initial approval letter
for ALBUNEX with an indication as set forth in Appendix 4; and

        (e) First Commercial Shipment.  $3,000,000 due in 4 successive quarterly
installments of $750,000 each, with the first quarterly  installment  payable 30
days after the date  Mallinckrodt  accepts  MBI's first  commercial  shipment of
ALBUNEX under Article 2.

In no event shall Mallinckrodt be obligated to make payments except with respect
to the first instance in which a particular milestone is achieved.

        4.02 Initial Marketing Payment.

        (a) In addition to the other amounts due under  Article 4,  Mallinckrodt
shall  pay MBI an amount of United  States  dollars  equal to the  amount of Net
Sales of ALBUNEX in the  Territory  for the  365-day  period  commencing  on the
Launch Date.

        (b)  Mallinckrodt  shall  deliver to MBI within 60 days after the end of
such 365-day period,  as the case may be, a true and accurate  report,  covering
such period in sufficient  detail to accurately  account for gross sales and all
adjustments used to derive aggregate Net Sales subject to this Section 4.02.

        (c) Simultaneously  with the delivery of the report described in Section
4.02(b),  Mallinckrodt shall pay MBI the amount described in Section 4.02(a) for
such period  covered by the report.  The payment  shall be made in United States
dollars.

        (d)  Notwithstanding  anything  in this  Section  4.02 to the  contrary,
Mallinckrodt shall not be obligated to pay in excess of $30,000,000  pursuant to
this  Section  4.02  regardless  of the amount of Net Sales  during the  365-day
period commencing on the Launch Date.

        4.03 Feinstein Royalties.

        (a) Provided that MBI has timely made all prior royalty  payments to Dr.
Stephen B. Feinstein  pursuant to the License  Agreement dated November 5, 1986,
as amended  ("Feinstein  License"),  Mallinckrodt  shall pay to MBI in trust for
further  payment by MBI to Dr.  Stephen B. Feinstein an amount equal to one-half
of MBI's  royalty  obligations  to Dr.  Stephen  B.  Feinstein  pursuant  to the
Feinstein License attributable to Net Sales of ALBUNEX, up to a maximum of 3% of
Net Sales of ALBUNEX; provided,  however, that Mallinckrodt shall pay to MBI for
MBI's  account  a  royalty  of 3% on the  first  $66,666,666.67  of Net Sales of
ALBUNEX in the United  States,  and shall pay to MBI a royalty of 3% on the next
$33,333,333.33  of Net Sales of ALBUNEX in the United States, of which MBI shall
pay one-half to Dr.  Stephen B.  Feinstein and the other  one-half  shall be for
MBI's account.  As of the date that Mallinckrodt  begins to manufacture  ALBUNEX
for commercial  sale following the earlier of (i)  termination of this Agreement
pursuant to which the licenses  granted in this Agreement by MBI to Mallinckrodt
survive such  termination  pursuant to Section 14.03 or (ii) the exercise by MBI
of its rights  pursuant to Sections  9.01(a) or (b) and the  satisfaction of the
conditions  contained  in Section  9.03,  Mallinckrodt's  obligation  to pay MBI
pursuant to the  foregoing  sentence  shall  increase  (in the case of (ii),  in
respect of the affected territory only) to an amount equal to the total of MBI's
royalty obligation  pursuant to the Feinstein License  attributable to Net Sales
of ALBUNEX, up to a maximum of 6% of Net Sales of ALBUNEX. If Mallinckrodt loses
exclusivity in the Additional  Territory  [omitted;  filed  separately  with the
Commission],  Mallinckrodt's  obligation to pay MBI shall similarly  increase in
respect of the  affected  territory as of the date that  Mallinckrodt  begins to
manufacture  ALBUNEX for commercial sale in that territory.  All payments to MBI
pursuant  to this  Section  4.03(a)  (i) shall be made not later than 5 business
days  prior to the due date of the  payment  by MBI to Dr.  Steven B.  Feinstein
under  the  Feinstein  License,  (ii) to the  extent  payable  to Dr.  Steven B.
Feinstein,  shall  be held by MBI in a  segregated  trust  account  held for the
benefit of Dr. Steven B. Feinstein, and (iii) shall be remitted by MBI from such
trust  account  to Dr.  Steven B.  Feinstein  on or before  the due date of such
payment under the Feinstein License.

        (b) MBI understands that Mallinckrodt may wish to approach Dr. Steven B.
Feinstein  and  discuss  with  him  the  possibility  of  a  direct  license  to
Mallinckrodt  in the event  there is a  termination  of the  Feinstein  License.
Mallinckrodt  shall advise MBI in advance if it desires to hold such discussions
with Dr. Steven B.  Feinstein and MBI shall be permitted to  participate in such
discussions, provided, however, MBI shall not be obligated to pay any additional
consideration  to Dr. Steven B.  Feinstein or to undertake any other  additional
financial obligation.



                                    Article 5

                                 Confidentiality

        5.01  General.  At all  times  during  the  term of this  Agreement  and
thereafter,  MBI  and  Mallinckrodt  shall  keep  confidential,  not use and not
disclose to third  parties any and all of the  Confidential  Information  of the
other  party  (Mallinckrodt  Confidential  Information  in  MBI's  case  and MBI
Confidential Information in Mallinckrodt's case), except as expressly authorized
by prior  written  consent of the other party or as provided in this  Agreement,
and except to those of its  employees as necessary for the  performance  of this
Agreement  so long as such  employee  has signed a  confidentiality  and non-use
agreement with terms no less restrictive than set out herein.

        5.02 Exceptions to  Confidentiality.  The obligation of  confidentiality
and restriction on use imposed by Article 5 shall not apply to any  Confidential
Information that:

        (a) Was in the  public  domain  prior to the date of this  Agreement  or
subsequently came into the public domain through no fault of such party; or

        (b) Was  lawfully  received by such party from a third party free of any
obligation of confidence to such third party; or

        (c)  Was already in the possession of such party prior to receipt 
 thereof, directly or indirectly, from the other party; or

        (d)  Is  required  to  be  disclosed  in a  judicial  or  administrative
proceeding  after all reasonable legal remedies for maintaining such information
in confidence have been exhausted; or

        (e)  Is   subsequently   and   independently   developed  by  employees,
consultants  or  agents  of  the  disclosing  party  without  reference  to  the
Confidential Information disclosed.

        5.03  Regulatory.  MBI and  Mallinckrodt  are  permitted  to  provide to
governmental  personnel and agencies,  including but not limited to the FDA, all
materials required by such personnel or agency in conjunction with an inspection
of MBI's or Mallinckrodt's  facilities, or any governmental submission,  report,
license, application or similar item, by MBI or Mallinckrodt,  including but not
limited to all documentation  and test results relating to ALBUNEX,  and samples
of ALBUNEX.

        5.04  Consultants or  Laboratories.  MBI or Mallinckrodt  may employ the
services of consultants or  laboratories as part of the goods and services to be
provided  pursuant to this Agreement if each such consultant or laboratory signs
a  confidentiality  agreement no less restrictive than the  confidentiality  and
non-use  provisions in this  Agreement.  MBI and  Mallinckrodt  may disclose the
terms of this Agreement to their  respective  attorneys,  accountants,  lenders,
insurance brokers and underwriters,  and investment  bankers,  or as required by
law.

        5.05 Publications.  Each party (the "Disclosing  Party") shall submit to
the other  (the  "Receiving  Party")  at least 90 days  prior to  submission  or
disclosure to any third party, all manuscripts,  abstracts, articles, memorandum
or other  similar  documents  relating  to  ALBUNEX  proposed  to be  published,
disclosed or discussed in any scientific,  trade, industry or other publication,
meeting or forum.  The Reviewing Party shall notify the Disclosing  Party if, in
the reasonable  judgment of the Reviewing Party,  the proposed  disclosure would
violate the terms of this Article 5. Thereafter,  the Disclosing Party shall not
disclose,  publish or otherwise make public,  the proposed  disclosure and shall
take all reasonable steps to prevent such disclosure or publication.

                                    Article 6

                    Representations, Warranties and Covenants

        6.01 Representations,   Warranties  and  Covenants  of   Mallinckrodt. 
Mallinckrodt   hereby   covenants, represents and warrants to MBI that:

        (a) Neither the execution  and delivery by it of this  Agreement nor the
consummation  of the  transactions  contemplated  hereby will violate any law or
regulation,  or  conflict  with or result in a breach  of or  default  under any
agreement, license, instrument, judgment, decree or order to which it is a party
or by which it is bound.

        (b) No approval or consent of any governmental agency or instrumentality
is  required  for  the  authorization,  execution,  or  delivery  by it of  this
Agreement.

        (c) Neither this Agreement nor any document or certificate  furnished to
MBI by Mallinckrodt  pursuant to this Agreement contains any untrue statement of
a material fact or omits to state a material fact necessary in order to make the
statements contained herein and therein not misleading.

        (d) The execution and delivery of this Agreement and the  performance by
Mallinckrodt of its obligations  hereunder are within  Mallinckrodt's  corporate
power,  have been duly  authorized  by  proper  corporate  action on the part of
Mallinckrodt  and are not in violation of the  Certificate of  Incorporation  or
By-Laws of Mallinckrodt.

        (e) Except as  permitted  by this  Agreement  (as  provided  in Sections
7.01(c)),  during the term hereof Mallinckrodt shall neither manufacture ALBUNEX
nor purchase ALBUNEX from anyone other than MBI.

        6.02 Representations,  Warranties  and  Covenants  of  MBI.  MBI  
covenants, represents and warrants to Mallinckrodt that:

        (a) Neither the execution  and delivery by it of this  Agreement nor the
consummation  of the  transactions  contemplated  hereby will violate any law or
regulation,  or  conflict  with or result in a breach  of or  default  under any
agreement, license, instrument, judgment, decree or order to which it is a party
or by which it is bound.

        (b) No approval or consent of any governmental agency or instrumentality
is  required  for  the  authorization,  execution,  or  delivery  by it of  this
Agreement.

        (c) Neither this Agreement nor any document or certificate  furnished to
Mallinckrodt by MBI pursuant to this Agreement  contains any untrue statement of
a material fact or omits to state a material fact necessary in order to make the
statements contained herein and therein not misleading.  All product and testing
data,  and all  Know-how  and other data and  information  supplied  by MBI with
respect to or in  connection  with  ALBUNEX is and will be accurate and does not
and will not contain any untrue  statement of a material fact or omit to state a
material fact necessary in order to make it not misleading.

        (d) The execution and delivery of this Agreement and the  performance by
MBI of its  obligations  hereunder are within MBI's corporate  power,  have been
duly  authorized  by proper  corporate  action on the part of MBI and are not in
violation of the Certificate of Incorporation or By-Laws of MBI.

        (e) Except as provided  in Sections  3.01,  9.01(a),  (b) and 9.06,  (i)
Mallinckrodt  shall  have  the  exclusive  non-cancellable  distributorship  and
exclusive  non-cancellable sales representation of ALBUNEX in the Territory, the
Additional Territory,  [omitted;  filed separately with the Commission] and (ii)
MBI  has  not   appointed,   and  will  not  appoint   any  other   distributor,
representative  or agent to sell or  distribute  ALBUNEX in the  Territory,  the
Additional Territory, [omitted; filed separately with the Commission].

        (f) To the best of MBI's  knowledge,  ALBUNEX can now and  hereafter  be
manufactured,  used  and  sold  in  the  Territory,  the  Additional  Territory,
[omitted;  filed  separately with the Commission]  without  substantial  risk of
infringement of any right, interest, or patent of any third party.

        (g) MBI owns or controls the Technology Rights and, to the best of MBI's
knowledge,  the patents and patent  applications now contained in the Technology
Rights are of sufficient scope to protect ALBUNEX, its production, use and sale,
and any patents,  including patents issuing on any of such patent  applications,
are, or will be upon issuance, reasonably enforceable.

        (h) There is no claim, suit,  proceeding or other investigation  pending
or, to the best knowledge of MBI,  threatened against MBI in connection with the
research,  development,  manufacture,  sale, use or distribution of ALBUNEX,  or
which would prevent the performance of this Agreement.

        (i) All ALBUNEX sold by MBI to  Mallinckrodt  pursuant to Article 2 will
be manufactured or produced in a good and workmanlike manner, in compliance with
then-current FDA Good Manufacturing Practices, and shall be merchantable, and be
fit for the purposes for which it was produced.

        (j) All ALBUNEX sold by MBI to  Mallinckrodt  pursuant to Article 2: (i)
will be manufactured or produced in compliance with the Occupational  Safety and
Health Act, as amended, and the Fair Labor Standards Act, as amended;  (ii) will
not be adulterated  or misbranded  within the meaning of the Federal Food Drug &
Cosmetic Act, and will not be articles  which may not,  under the  provisions of
Sections  404 or 505 of such  Act,  or any  similar  state  or  local  laws,  be
introduced into interstate commerce; (iii) will comply with all other applicable
standards  which  are  necessary  for the  manufacture,  use or sale of  ALBUNEX
including, but not limited to, all rights in patents, trademarks, FDA approvals,
registrations  or  permits,  and all other  regulatory  permits,  approvals  and
licenses  necessary for the  manufacture,  use or sale of ALBUNEX;  and (iv) use
only  USP  Human  Serum  Albumin  that is 100%  tested  and  certified  AIDS and
Hepatitis B free.

                                    Article 7

                              License of Technology

        7.01 Technology Rights.

        (a) MBI hereby grants to Mallinckrodt a license of,  including the right
to sublicense  others under,  the  Technology  Rights and Know-how,  in order to
test,  evaluate and develop ALBUNEX covered thereby,  and to use, sell, offer to
sell and  otherwise  commercialize  ALBUNEX  in the  Territory,  the  Additional
Territory, [omitted; filed separately with the Commission].  Subject only to the
limitations  contained in Sections  9.01(a) and (b), 9.06 and 14.03(b) and MBI's
utilization  of the  Technology  Rights and Know-how to perform its  obligations
pursuant to this Agreement (including MBI's right to manufacture ALBUNEX),  this
license from MBI is exclusive, perpetual and non-cancellable:

             (1)  in the Territory;

             (2)  in the Additional Territory, subject to Section 3.02(a);

             (3)  [omitted; filed separately with the Commission]; and

             (4)  [omitted; filed separately with the Commission].

        (b)  MBI  hereby  grants  to  Mallinckrodt  and  to its  Affiliates  and
sublicensees the right to grant irrevocable licenses to end users of ALBUNEX, to
use ALBUNEX obtained directly or indirectly from Mallinckrodt, its Affiliates or
its sublicensees  for any purpose within the Technology  Rights or the Know-how.
Subject only to (i) the limitations  contained in Sections 9.01(a) and (b), 9.06
and 14.03(b),  (ii) MBI's  utilization of the Technology  Rights and Know-how to
perform its  obligations  pursuant to this Agreement  (including  MBI's right to
manufacture  ALBUNEX)  and (iii) the same  qualifications  described in Sections
7.01(a)(2)-(4),   this   license   from   MBI  is   exclusive,   perpetual   and
non-cancellable.

        (c) MBI hereby grants to Mallinckrodt a license of,  including the right
to sublicense  Affiliates  under, the Technology Rights and Know-how in order to
manufacture  and have  manufactured  ALBUNEX in the  Territory,  the  Additional
Territory, [omitted; filed separately with the Commission].  Subject only to (i)
the limitations  contained in Sections 9.01(a) and (b), 9.06 and 14.03(b),  (ii)
MBI's  utilization  of  the  Technology  Rights  and  Know-how  to  perform  its
obligations under this Agreement and (iii) the same qualifications  described in
Sections  7.01(a)(2)-(4),  this license  from MBI is  exclusive,  perpetual  and
non-cancellable.  Notwithstanding  the foregoing,  Mallinckrodt may not exercise
the license under this Section 7.01(c) except as provided in Sections 7.01(c)(1)
and (2).

             (1)Mallinckrodt    Manufacturing.    Mallinckrodt   may   use   the
        manufacturing  license  granted  pursuant  to this  Section  7.01(c)  to
        manufacture  ALBUNEX only under the following  circumstances and subject
        to the  conditions  and  limitations  set  forth  below  and in  Section
        7.01(c)(2):

                  (A) MBI  Co-Marketing.  If MBI exercises either of its options
             under Sections  9.01(a) and (b) in respect of any territory,  or if
             Mallinckrodt   loses  exclusivity  in  the  Additional   Territory,
             [omitted;  filed separately with the  Commission],  as the case may
             be, pursuant to Section 3.02 and MBI exercises its right under that
             Section  directly or  indirectly  to sell  ALBUNEX in the  affected
             territory for its own account or to license its right to do so to a
             third party, Mallinckrodt may manufacture ALBUNEX in any quantities
             for sale in that territory;  and no royalty shall be payable to MBI
             in respect of Net Sales in that  territory of ALBUNEX  manufactured
             after MBI's exercise of the option in question;

                  (B)   Mallinckrodt   Terminates.   If  Mallinckrodt   properly
             terminates  this Agreement  pursuant to Sections  14.02(b),  (c) or
             (e),  Mallinckrodt may manufacture ALBUNEX in any quantities.  With
             respect  to any  calendar  quarter,  Mallinckrodt  shall  pay MBI a
             royalty  in  respect  of  each  Albunex  Product   manufactured  by
             Mallinckrodt  after  the  date of  termination  equal to 40% of the
             product  determined by multiplying that Albunex  Product's  Average
             Selling  Price  during  the  quarter by the number of vials of that
             product sold during that  quarter,  less (i)  Mallinckrodt's  fully
             allocated manufacturing cost for such ALBUNEX determined using U.S.
             generally  accepted  accounting  principles,  and (ii) until  fully
             recovered,  one-half of Mallinckrodt's  Start-up Costs not included
             in (i).  Mallinckrodt  may also recover Damages  resulting from any
             breach or default of MBI which  occasions the  termination.  If and
             when any such Damages are awarded to  Mallinckrodt  in  arbitration
             proceedings  pursuant  to  Section  12.01 or are  agreed to by MBI,
             Mallinckrodt may recover such Damages  separately or as a deduction
             from  royalties  to MBI.  Mallinckrodt  shall not have any  royalty
             obligation under this Section  7.01(c)(1)(B) in respect of sales of
             Albunex  Products  after the later of the third  anniversary of the
             date that the FDA  approves  an  intravenous  myocardial  perfusion
             indication  of  ALBUNEX  for sale in the  United  States or July 1,
             2003.

                  (C) MBI Terminates.  If MBI properly terminates this Agreement
             pursuant  to  Section  14.02(b),   (d)  or  (f),  Mallinckrodt  may
             manufacture ALBUNEX in any quantities. With respect to any calendar
             quarter,  Mallinckrodt  shall pay MBI a royalty  in respect of each
             Albunex  Product  manufactured  by  Mallinckrodt  after the date of
             termination  equal to 20% of the product  determined by multiplying
             that Albunex  Product's Average Selling Price during the quarter by
             the  number  of vials of that  product  sold  during  the  quarter.
             Mallinckrodt's  royalty obligation under this Section 7.01(c)(1)(C)
             shall  continue  through  the  expiration  date of the last  patent
             relating to ALBUNEX,  on a  country-by-country  basis. MBI may also
             recover   Damages   resulting   from  any   breach  or  default  of
             Mallinckrodt which occasions the termination.  Notwithstanding  the
             authorization to manufacture under this Section  7.01(c)(1)(C),  if
             MBI has terminated this Agreement  pursuant to Sections 14.02(b) or
             (d) and if  Mallinckrodt  fails to make any royalty  payment due to
             MBI under this  Agreement  when due (and does not cure its  default
             within 10 days), the manufacturing  license granted to Mallinckrodt
             under this Section 7.01(c) shall automatically terminate.

                  (D) MBI Failure to Meet Orders.

                  (i)  General.  Notwithstanding  any  other  provision  of this
                  Agreement,  if as a result of manufacturing  problems, lack of
                  manufacturing  capacity,  Force Majeure,  or any other reason,
                  MBI  fails or  refuses  for each of two  consecutive  calendar
                  quarters to deliver at least 75% of the  required  quantity of
                  any  Albunex  Product   complying  with  MBI's   Manufacturing
                  Obligations  in timely  satisfaction  of  Mallinckrodt's  firm
                  orders for that product for those quarters,  Mallinckrodt  may
                  manufacture  that Albunex  Product in quantities  which,  when
                  added  to the  quantities  of  conforming  products  that  MBI
                  reasonably  may be expected to deliver in timely  satisfaction
                  of  Mallinckrodt's  firm  orders,   satisfies   Mallinckrodt's
                  requirements  for that  Albunex  Product as  disclosed  by its
                  Forecasts. After validation and FDA approval of Mallinckrodt's
                  manufacturing   facility   or   facilities,   in   order   for
                  Mallinckrodt  to become  entitled  to  manufacture  under this
                  Section 7.01(c)(1)(D),  it must begin manufacturing within six
                  months of the  occurrence  of the  condition  specified  above
                  (i.e.,  it  cannot  decline  to  manufacture  and  invoke  the
                  occurrence  of the  condition  specified  above as  permitting
                  manufacturing at a much later date).

                  (ii)  Procedures   Respecting   MBI's  Right  to  Resume  Full
                  Manufacturing.  Mallinckrodt  may continue to manufacture such
                  Albunex Product under this Section  7.01(c)(1)(D) until MBI is
                  able  once  again to  deliver  conforming  products  in timely
                  satisfaction of Mallinckrodt's  firm orders. No sooner than 10
                  days  prior  to the  end  of the  calendar  quarter  in  which
                  Mallinckrodt    becomes    authorized   under   this   Section
                  7.01(c)(1)(D)  to  manufacture  any Albunex  Product,  MBI may
                  certify  that it is able to  deliver  conforming  products  in
                  timely  satisfaction of what Mallinckrodt's firm orders to MBI
                  would  be if  Mallinckrodt  were  not  authorized  under  this
                  Section to manufacture  that Albunex  Product.  Following such
                  certification,  Mallinckrodt  may continue to manufacture that
                  Albunex  Product in quantities  consistent with the quantities
                  that it had  been  manufacturing  prior  to  receipt  of MBI's
                  certification (and consistent with  Mallinckrodt's firm orders
                  to  MBI  in  accordance   with  Section   7.01(c)(1)(D)(iii)).
                  Mallinckrodt  shall cease to be authorized to manufacture that
                  Albunex  Product  under this Section  7.01(c)(1)(D)  after the
                  last day of the calendar quarter after the calendar quarter in
                  which MBI gives its  certification  to  Mallinckrodt,  and the
                  parties  shall return to the status quo ante  regarding  their
                  respective  manufacturing  rights and duties.  Notwithstanding
                  the foregoing time  limitations  (which are intended to permit
                  Mallinckrodt  to operate  its  manufacturing  facility  for at
                  least two  consecutive  calendar  quarters  before MBI resumes
                  manufacturing   Mallinckrodt's  entire  ALBUNEX  demand),  the
                  parties may agree to permit MBI to resume  manufacturing at an
                  earlier date.

                  (iii) Procedures Respecting  Mallinckrodt's Forecasts and Firm
                  Orders.  During  the  period of  Mallinckrodt's  manufacturing
                  under this Section 7.01(c)(1)(D),  Mallinckrodt shall continue
                  to deliver  Forecasts  in  accordance  with  Section  2.05(b),
                  provided  that  these  Forecasts  shall  separately  state the
                  quantities of each Albunex Product that  Mallinckrodt  expects
                  to  manufacture  itself  and the  quantities  of each  Albunex
                  Product  that it expects to  purchase  from MBI each  calendar
                  quarter.  The quantities that Mallinckrodt expects to purchase
                  from MBI each  calendar  quarter  shall be the maximum  amount
                  that MBI can reasonably be expected under the circumstances to
                  deliver in timely  satisfaction of  Mallinckrodt's  firm order
                  for  the   quarter.   (As   provided   in   Section   2.05(b),
                  Mallinckrodt's  forecast  of its  purchases  from  MBI for the
                  first  two  calendar   quarters  of  each  Forecast  shall  be
                  considered firm orders for those quarters.)

                  (iv) Royalty. The royalty payable to MBI in respect of ALBUNEX
                  manufactured by Mallinckrodt under this Section  7.01(c)(1)(D)
                  shall be determined as follows:

                       (a) Low  Volume.  If  Mallinckrodt  manufactures  ALBUNEX
                       pursuant to this Section  7.01(c)(1)(D) for (1) no longer
                       than two  consecutive  full calendar  quarters and during
                       such  time  manufactures  50% or less of its  total  firm
                       orders  or for  (2)  longer  than  two  consecutive  full
                       calendar  quarters but in any given full calendar quarter
                       manufactures  less  than 25% of its firm  order  for that
                       quarter,  then, with respect to such  two-quarter  period
                       (plus any prior "stub"  period) or such  quarter,  as the
                       case may be,  Mallinckrodt  shall  pay MBI a  royalty  in
                       respect  of  each   Albunex   Product   manufactured   by
                       Mallinckrodt  during  such  period  equal  to  40% of the
                       product  determined by multiplying that Albunex Product's
                       Average  Selling  Price during the quarter of sale by the
                       number  of  vials  of  that   product   sold,   less  (i)
                       Mallinckrodt's  fully  allocated  manufacturing  cost for
                       such ALBUNEX  determined  using U.S.  generally  accepted
                       accounting  principles,  and (ii) until fully  recovered,
                       one-half of Mallinckrodt's Start-up Costs not included in
                       (i);  but in no event shall such  royalty be less than 5%
                       or more than 10%.

                       (b) High Volume.  In respect of ALBUNEX  manufactured  by
                       Mallinckrodt   pursuant  to  this  Section  7.01(c)(1)(D)
                       during any full calendar  quarter (or prior "stub period)
                       not    described    in   Section    7.01(c)(1)(D)(iv)(a),
                       Mallinckrodt  shall pay MBI a royalty  in respect of each
                       Albunex Product  manufactured by Mallinckrodt during such
                       period  equal  to  40%  of  the  product   determined  by
                       multiplying that Albunex  Product's Average Selling Price
                       during the quarter of sale by the number of vials of that
                       product  sold,   regardless   of  when  sold,   less  (i)
                       Mallinckrodt's  fully  allocated  manufacturing  cost for
                       such ALBUNEX  determined  using U.S.  generally  accepted
                       accounting  principles,  and (ii) until fully  recovered,
                       one-half of Mallinckrodt's Start-up Costs not included in
                       (i);  but in no event shall such royalty be less than 10%
                       or more than 20%.

                       (c)  "Three   Strikes."   Notwithstanding   the   royalty
                       provisions  of  Sections  7.01(c)(1)(D)(iv)(a)  and  (b),
                       Mallinckrodt  shall not be  required  to make any payment
                       described  in  those  Sections  to MBI  after  the  third
                       occurrence  of an  event  giving  rise to  Mallinckrodt's
                       manufacturing rights under this Section  7.01(c)(1)(D) (a
                       "Strike")  provided that, in addition to MBI's failure to
                       deliver at least 75% of Mallinckrodt's firm order for any
                       given two consecutive quarters, if with respect to either
                       of such quarters MBI nevertheless timely delivers 150% of
                       the amount of the  estimated  forecast  for such  quarter
                       appearing  in the  Forecast  provided to MBI on the first
                       day of the quarter starting six months prior to the start
                       of the quarter in question, then the occurrence shall not
                       count as one of the three Strikes excusing Mallinckrodt's
                       obligation   to  pay  a  royalty   under   this   Section
                       7.01(c)(1)(D). Only two consecutive quarters in which MBI
                       has both failed to deliver at least 75% of Mallinckrodt's
                       firm orders and failed to deliver 150% of the  applicable
                       forecasts  shall count as a Strike.  After a Strike,  the
                       next  Strike  cannot  occur  until  MBI has  again  begun
                       manufacturing   Mallinckrodt's   entire   ALBUNEX  demand
                       pursuant to Section 7.01(c)(1)(D)(ii).

                       Example:  On January 1, 1996,  Mallinckrodt  issues the 
                       following Forecast (only  quarters necessary to the 
                       example are provided):

                       Q1     January 1, 1996               1,000 (firm order)
                       Q2     April 1, 1996                 2,000 (firm order)
                       Q3     July 1, 1996                  3,000
                       Q4     October 1, 1996               8,000

                       On April  1,  1996,  Mallinckrodt  issues  the  following
                       Forecast:

                       Q2     April 1, 1996                 2,000 (firm order)
                       Q3     July 1, 1996                  8,000 (firm order)
                       Q4     October 1, 1996               10,000

                       On  July  1,  1996,  Mallinckrodt  issues  the  following
                       Forecast:

                       Q3     July 1, 1996                  8,000 (firm order)
                       Q4     October 1, 1996               20,000 (firm order)

                       MBI timely delivers:

                       Q1   1,000
                       Q2   1,800
                       Q3   5,000
                       Q4   11,000

                       With  respect to Q1, MBI has  delivered  100% of the firm
                       order.

                       With  respect  to Q2,  MBI has  delivered  1,800 of 2,000
                       ordered (90%).  It has therefore not failed to deliver at
                       least 75% of the firm order for that quarter. MBI has not
                       earned a quarter toward the entitlement to manufacture or
                       toward a Strike.

                       With  respect  to Q3,  MBI has  delivered  5,000 of 8,000
                       ordered  (62.5%).  It has therefore  failed to deliver at
                       least  75% of the firm  order for that  quarter.  It has,
                       however, delivered 5,000/3,000,  or 167%, of the forecast
                       for that quarter appearing in the Forecast  delivered six
                       months earlier. Therefore no Strike has occurred.

                       With  respect to Q4, MBI has  delivered  11,000 of 20,000
                       ordered  (55%).  It has  therefore  failed to  deliver at
                       least 75% of the firm order for that quarter. It has also
                       delivered  only  11,000/10,000,  or 110%, of the forecast
                       for that quarter appearing in the Forecast  delivered six
                       months earlier.

                       Thus,  Mallinckrodt  may  manufacture  makeup  quantities
                       under Section 7.01(c)(1)(D) because MBI failed to deliver
                       at  least  75% of the  firm  orders  for two  consecutive
                       months. A Strike has not occurred for purposes of Section
                       7.01(c)(1)(D)(iv)(c),  however,  because MBI did not fail
                       to  deliver  150%  of the  applicable  forecast  for  two
                       consecutive quarters.

                       If  MBI  had  delivered  4,000  in  Q3,  MBI  would  have
                       delivered 4,000/3,000,  or 133%, of the forecast for that
                       quarter  appearing in the Forecast  delivered  six months
                       earlier.  In that case, assuming Q4 orders and deliveries
                       as in the example,  by the end of Q4  Mallinckrodt  could
                       manufacture  makeup  quantities,  as before, and a Strike
                       would   have    occurred    for   purposes   of   Section
                       7.01(c)(1)(D)(iv)(c)  because  MBI would have  failed the
                       "150% test" in two consecutive quarters.

                  (v) Sole Remedy;  Damages.  With the exception of the recovery
                  of Damages,  Mallinckrodt's right to manufacture ALBUNEX under
                  the circumstances described in Section 7.01(c)(1) (D) shall be
                  its sole remedy for MBI's failure or refusal to supply ALBUNEX
                  pursuant to Mallinckrodt's firm orders.

                  (vi) Adjustments. If it is not clear during any period whether
                  the "low volume" or "high volume"  royalty  provisions of this
                  Section  7.01(c)(1)(D)  apply at the time payment is required,
                  Mallinckrodt  shall make its best estimate as to which applies
                  and make the  appropriate  payment.  If it  appears at a later
                  date that Mallinckrodt's estimate was incorrect,  Mallinckrodt
                  shall pay any  additional  amounts owed or receive a credit on
                  future payments due, as the case may be.

                  (E)  [Omitted; filed separately with the Commission.]

                  (F) Low Price.  If MBI declines to  manufacture or to continue
              to   manufacture   any  new  or  existing   Albunex   Product  and
              Mallinckrodt  elects  to  manufacture  that  product  pursuant  to
              Section  2.14(d)(1),  Mallinckrodt  may manufacture as provided in
              that Section (and to the extent  further  provided in this Section
              7.01(c)(1) and Section 7.01(c)(2)).

                  (G) Other Agreement. If MBI and Mallinckrodt execute a written
              agreement  which permits or requires  Mallinckrodt  to manufacture
              ALBUNEX,  Mallinckrodt  may manufacture  ALBUNEX in the quantities
              and on the terms  agreed on, and such written  agreement  shall be
              deemed an amendment of this Agreement.

             (2)  Other Conditions.  The  manufacturing  license granted to
             Mallinckrodt in this Section 7.01(c) is also subject to the
             following conditions and limitations:

                  (A)  Start-up  Costs.  As  used  in  Sections  7.01(c)(1)  and
             2.14(d)(1)(A), "Start-up Costs" means Mallinckrodt's reasonable and
             appropriate  pre-operating  and  start-up  costs  to  initiate  the
             manufacture  of  ALBUNEX,  including  "one-time"  costs  which  are
             incurred during the validation  process and "one-time"  costs which
             are incurred once the  validation  process is complete and prior to
             the point that each  production for commercial  sale begins.  These
             costs   include,   among  other  costs,   costs   associated   with
             qualification,    validation,    hiring   and   quality    control.
             Mallinckrodt's "Start-up Costs" shall also be considered to include
             amounts  reimbursed  to MBI pursuant to Section  7.01(c)(2)(H)  and
             Mallinckrodt's  reasonable and  appropriate  shut-down costs in the
             event that  Mallinckrodt  is  manufacturing  ALBUNEX under Sections
             7.01(c)(1)(D),  2.14(d)(1)(A) or 2.14(d)(2)(A) and then is required
             to shut  down its  ALBUNEX  manufacturing  line by  reason of MBI's
             resumption   of   full    manufacturing    pursuant   to   Sections
             7.01(c)(1)(D)(ii),  2.14(d)(1)(A) or 2.14(d)(2)(A), as the case may
             be. All Start-up Costs shall be determined in accordance  with U.S.
             generally accepted  accounting  principles.  The maximum cumulative
             Start-up  Costs  that may be taken into  account  for  purposes  of
             Sections 7.01(c)(1) and 2.14(d)(1) may not exceed $10 million..  To
             the extent that Start-up  Costs have been  deducted from  royalties
             owed under this  Section  7.01(c),  they may not  deducted a second
             time if Mallinckrodt later becomes entitled to manufacture owing to
             the  occurrence  of another (or a repeat of the same)  circumstance
             described in Section  7.01(c).  At MBI's option,  it may pay all or
             some of such Start-up Costs directly to  Mallinckrodt  at any time,
             and  Mallinckrodt  shall not be entitled to deduct  costs thus paid
             from royalties owed under this Section 7.01(c).

                  (B) Effect of Arbitration on Termination. This Agreement shall
             not be deemed terminated by a party pursuant to Sections  14.02(b),
             (c),  (d), (e) or (f) if the other party is disputing the propriety
             of  termination  (including  but not  limited to whether a cure has
             been effected or reasonable  steps have been taken to cure and have
             been  diligently  pursued,  where  applicable)  and such  party has
             timely  filed or served  the  appropriate  instrument  to invoke an
             arbitration proceeding under Section 12.01 of this Agreement.  Such
             filing or service  shall be deemed  timely if it takes place (i) in
             the case of a  14.02(b)  termination,  within 30 days of the notice
             described in the first clause of that Section,  or (ii) in the case
             of a Section  14.02(c),  (d), (e) or (f) termination,  prior to the
             expiration  of the  applicable  remedial  period.  In the case of a
             Section 14.02(b) termination in which the arbitrators rule in favor
             of the party seeking  termination,  if the  termination is based on
             dissolution,  ceasing  business  operations,  or  liquidation,  the
             agreement shall be deemed  terminated;  if the termination is based
             on any other  termination  event  described  in that  Section,  the
             unsuccessful  party shall have 60 days to dismiss the proceeding or
             discharge  the the  assignee,  as the case may be. In the case of a
             Section  14.02(c),  (d), (e), or (f) termination,  the unsuccessful
             party shall have the full applicable  remedial period from the date
             of the  arbitrators'  decision to effect a cure,  provided that any
             additional  arbitration  over whether the cure is effective in such
             case shall  stay  termination  for no more than 30 days  unless the
             arbitrators rule otherwise  before that period of time expires.  In
             the case of a Section  14.02(c) or (d)  termination,  following the
             arbitrators'  decision  the  unsuccessful  party  may  not  further
             forestall termination by claiming a good faith dispute.

                  (C) Damages. As used in this Section 7.01(c),  "Damages" means
             actual damages and does not include incidental,  consequential,  or
             punitive  damages,  but  (notwithstanding   this  limitation)  does
             include lost  profits on sales of ALBUNEX for the period  beginning
             with the  accrual  of  Mallinckrodt's  right to  manufacture  under
             Section  7.01(c)(1)  and  ending  with  the  time  it  is  lawfully
             permitted to operate an ALBUNEX  manufacturing  facility capable of
             producing  the Albunex  Product in question to meet  Mallinckrodt's
             requirements,  but in no event for a period  extending  beyond five
             years after the Effective Date.

                  (D) Parties' Respective Duties and Rights.  Mallinckrodt shall
             have the same duties and obligations in respect of the ALBUNEX that
             it  manufactures  under  this  Section  7.01(c)  that MBI has under
             Section 2.02,  Sections 2.04(a),  (b), (d), (i)(b) and (k), Section
             2.06(b),  and  Sections  6.02(i)  and (j) in respect of the ALBUNEX
             that it manufactures,  and MBI shall have the right,  upon not less
             than five  business  days' prior notice,  to inspect  Malinckrodt's
             facilities and operations, in order to insure that ALBUNEX is being
             manufactured  in compliance with Good  Manufacturing  Practices and
             that the other terms and  conditions  of this  Agreement  are being
             met.

                  (E) Payment Terms. No later than 45 days after the end of each
             calendar  quarter (except the fourth quarter),  Mallinckrodt  shall
             estimate its Net Sales for the quarter as  accurately as reasonably
             possible and make an estimated  royalty payment to MBI on the basis
             of its estimated  Net Sales for the quarter.  No later than 60 days
             after the end of each calendar year,  Mallinckrodt shall report its
             actual  Net  Sales  for the year to MBI and  calculate  the  actual
             royalty for the year payable to MBI.  Mallinckrodt shall pay to MBI
             with this  report the amount by which the  actual  royalty  for the
             year payable to MBI exceeds the aggregate amount of  Mallinckrodt's
             estimated  royalty  payments for the first three  quarters,  or, if
             Mallinckrodt has overpaid,  it shall receive an appropriate  credit
             against future amounts due.

                  (F)  Currency.  All royalty  payments  shall be made in United
             States  dollars.   Mallinckrodt's  reports  to  MBI  under  Section
             7.01(c)(2)(E) shall state the amount of all Net Sales by month. For
             Net Sales in a  currency  other than  United  States  dollars,  the
             amount of such Net Sales shall be computed using the average of the
             daily  exchange rates for the month of sale, as reported by Reuters
             Ltd.  Money 2000  System MBI shall have a right of audit  regarding
             the  royalties  payable by  Mallinckrodt  similar in frequency  and
             scope to the right of audit afforded MBI in Section 2.14(c).

              (G) MBI Retention of Manufacturing  Rights.  Except as provided in
            this Section  7.01(c) and Section  2.05(c),  during the term of this
            Agreement  MBI shall  retain,  as between it and  Mallinckrodt,  the
            exclusive  right  to  manufacture  ALBUNEX  in  the  Territory,  the
            Additional   Territory,   [omitted;   filed   separately   with  the
            Commission].

              (H) Reasonable Assistance.  MBI shall render reasonable assistance
            to Mallinckrodt in developing a manufacturing  capacity  pursuant to
            license granted in this Section  7.01(c).  MBI's assistance shall be
            provided at Mallinckrodt's sole expense,  including, but not limited
            to, reimbursement of MBI for travel expenses,  direct labor costs of
            MBI personnel, equipment and any other related expenses.

              (I) Limited Validation Manufacturing. Mallinckrodt may manufacture
            ALBUNEX  for the limited  purpose of  validating  its  manufacturing
            facility  or  facilities  and  producing  stability  studies  for or
            meeting other requirements of the FDA and foreign equivalents of the
            FDA.

              (J) Wrongful  Production of ALBUNEX by Mallinckrodt.  Mallinckrodt
            shall pay a royalty  of 40% of Net Sales of any and all  ALBUNEX  it
            manufactures and sells in violation of this Section 7.01(c).

              (K) Albumin. At Mallinckrodt's request after it becomes authorized
            to manufacture any Albunex Product under Sections  7.01(c)(1)(D)  or
            (F), or at  Mallinckrodt's  request in  connection  with the limited
            validation manufacturing authorized under Section 7.01(c)(2)(I), MBI
            shall  authorize  its  vendor  to  use a  portion  of  the  vendor's
            allocation of USP Human Serum Albumin to MBI to sell to Mallinckrodt
            to  manufacture  the Albunex  Product in question in the  authorized
            quantities  or to  manufacture  ALBUNEX as  reasonably  required  in
            connection with Mallinckrodt's limited validation manufacturing.

        7.02MBI Trademarks.

        (a)MBI  hereby  grants  to  Mallinckrodt   and  to  its  Affiliates  and
sublicensees  a  royalty-free  right and  license in  perpetuity  to use any MBI
Trademark on or in connection with the manufacture,  advertising,  distribution,
or sale of  ALBUNEX  made by or on behalf of  Mallinckrodt,  its  Affiliates  or
sublicensees  in  the  Territory,  the  Additional  Territory,  [omitted;  filed
separately  with the  Commission].  Prior to the  exercise  by MBI of its rights
under Sections 9.01(a) or (b) or 9.06, and subject to the limitations of Section
14.03 and the same  qualifications  described in Sections  7.01(a)(2)-(4),  this
license is non-cancellable and is exclusive with respect to all others including
MBI.

        (b)Mallinckrodt   hereby  grants  to  MBI  and  to  its  Affiliates  and
sublicensees a royalty-free right and license in perpetuity to use any trademark
other than the trademark  "Mallinckrodt"  that  Mallinckrodt  uses to market and
sell  ALBUNEX  in the  Territory,  the  Additional  Territory,  [omitted;  filed
separately with the  Commission].  MBI agrees not to utilize such license in the
Additional Territory,  [omitted;  filed separately with the Commission] prior to
Mallinckrodt's  loss of  exclusivity  in that  territory  pursuant  to  Sections
3.02(a),  (b) or (c), as the case may be, or  otherwise  to utilize such license
until the first to occur of (i) MBI's  exercise  of its  rights  under  Sections
9.01(a) or (b) or 9.06 or (ii) the occurrence of any of the conditions described
in Sections 14.03(b), (c) and (d).

        (c)Mallinckrodt  and MBI  undertake  that the  quality of goods sold and
offered for sale under the MBI Trademarks or trademarks licensed by Mallinckrodt
to MBI pursuant to Section 7.02(b) (collectively the "Trademarks") shall conform
to the  standards  approved by the  appropriate  regulatory  authorities  in the
Territory,  the  Additional  Territory,  [omitted;  filed  separately  with  the
Commission],  respectively.  Mallinckrodt  and  MBI  also  undertake  to use all
reasonable efforts to ensure that the said standards conform to the standards of
quality for said goods approved in writing by the other party.

        (d)The  licensor  party  shall  have the right of access  through a duly
authorized  agent  to the  licensee  party's  business  premises  at  reasonable
intervals  and during  ordinary  business  hours for the  purpose of  inspecting
and/or  testing  the goods sold or offered  for sale under the  Trademarks  upon
written request to Mallinckrodt or MBI, as the case may be.

        (e)The  Trademarks  shall  be used  only in  accordance  with  generally
accepted  trademark  practices.  Any usage by the licensee party in advertising,
promotional  materials or otherwise shall be submitted to the licensor party for
informational purposes.  Mallinckrodt or MBI, as the case may be, will take into
account the comments of the licensor party.

        (f)Mallinckrodt  or MBI,  as the  case  may be,  agrees  to  notify  the
licensor  party in  writing  of any  conflicting  uses of and  applications  for
registration  of the  Trademarks  or of any acts of  infringement  or of  unfair
competition  involving the Trademarks promptly after such matters are brought to
its attention or it has knowledge thereof.

        7.03Technology Transfer and Improvements.

        (a)MBI  shall from time to time  provide,  or cause to be  provided,  to
Mallinckrodt copies of all pharmacological, toxicological, and clinical data and
reports, stability data, manufacturing,  quality control, and other information,
Know-how,  technology  and  discoveries  of Know-how  relating to ALBUNEX now or
hereafter known to, or possessed,  acquired or developed by MBI which are needed
or  helpful  to  manufacture,  have  manufactured,  use or sell  ALBUNEX  in the
Territory,  the  Additional  Territory,  [omitted;  filed  separately  with  the
Commission].  All such items known to, possessed,  acquired or developed by MBI,
regardless if transferred to Mallinckrodt, shall be deemed to be included in the
licenses granted pursuant to Section 7.01 without any further action required by
MBI. All  information  described in this  Section  7.03(a)  shall be regarded as
Confidential Information.

        (b)MBI shall promptly notify and make available to  Mallinckrodt  all of
MBI's improvements to ALBUNEX (including additional indications),  its method of
use and its method of manufacture,  and all of such improvements,  regardless if
transferred  to  Mallinckrodt,  shall be deemed to be included  in the  licenses
granted pursuant to Section 7.01 without any further action required by MBI.

        7.04Ancillary Devices.  Mallinckrodt and MBI agree that any device, tool
or similar item related to or helpful in the sale, use or application of ALBUNEX
that  is not  covered  by the  Technology  Rights  or  Know-how  that  is now or
hereinafter owned or controlled by either of them (an "Ancillary  Device") shall
be discussed with the other party.  Prior to disclosure or discussion with third
parties,  each agrees to negotiate in good faith with the other the  opportunity
of marketing the Ancillary Device in connection with the sale of ALBUNEX and the
possibility of an economic  arrangement  similar to that for ALBUNEX established
pursuant to this Agreement.

        7.05Competing Products.

        (a)Mallinckrodt   shall  promptly  notify  MBI  of  an  opportunity  for
Mallinckrodt to acquire,  purchase, or license from a third party any technology
relating to products  described  in  Sections  1.04(c) or (d),  and which is not
covered by any Technology Rights, or which does not incorporate,  is not covered
by or is not made by the use of Know-how (the "Mallinckrodt  Purchased Competing
Technology").  Mallinckrodt shall license its rights to the Purchased  Competing
Technology  to MBI  upon  MBI's  satisfactory  undertaking  of 40% of all  past,
present and future  costs and  expenses  (including  future  royalties  or other
payments)  incurred or to be  incurred by  Mallinckrodt  in  connection  with or
arising  out  of the  acquisition,  purchase  or  license  of  the  Mallinckrodt
Purchased  Competing  Technology.  Such  license  shall  provide for an economic
arrangement similar to that for ALBUNEX established  pursuant to this Agreement.
If MBI does not satisfactorily  undertake within a reasonable time to pay 40% of
all such  costs  and  expenses,  Mallinckrodt  may  utilize  its  rights  to the
Mallinckrodt  Purchased  Competing  Technology in any manner whatsoever free and
clear of any  restraints  or  obligations  imposed  by this  Agreement;  without
limitation,  it may  manufacture  or purchase  from others any products  made by
using the Mallinckrodt Purchased Competing Technology.

        (b)MBI shall promptly  notify  Mallinckrodt of an opportunity for MBI to
acquire,  purchase,  or license from a third party of any technology relating to
products  described in Sections  1.04(c) or (d), and which is not covered by any
Technology  Rights,  or which does not incorporate,  is not covered by or is not
made by the use of Know-how  (the "MBI  Purchased  Competing  Technology").  MBI
shall  license  its  rights  to  the  MBI  Purchased  Competing   Technology  to
Mallinckrodt upon  Mallinckrodt's  satisfactory  undertaking of 60% of all past,
present and future  costs and  expenses  (including  future  royalties  or other
payments) incurred or to be incurred by MBI in connection with or arising out of
the acquisition,  purchase or license of the MBI Purchased Competing Technology.
Such  license  shall  provide  for an economic  arrangement  similar to that for
ALBUNEX  established  pursuant  to this  Agreement.  If  Mallinckrodt  does  not
satisfactorily  undertake  within a reasonable time to pay 60% of all such costs
and  expenses,  MBI  may  utilize  its  rights  to the MBI  Purchased  Competing
Technology  in any  manner  whatsoever  free  and  clear  of any  restraints  or
obligations imposed by this Agreement; without limitation, it may manufacture or
purchase  from others any  products  made by using the MBI  Purchased  Competing
Technology.

        (c)Mallinckrodt shall promptly notify MBI of Mallinckrodt's  development
through its own resources of any  technology  relating to products  described in
Sections  1.04(c) and (d),  which is not covered by any  Technology  Rights,  or
which  does  not  incorporate,  is not  covered  by or is not made by the use of
Know-how (the "Developed Competing  Technology").  Mallinckrodt shall either (i)
license the Developed Competing  Technology to MBI, or (ii) pay a royalty to MBI
of 10% of net sales of such products. Such license shall provide for an economic
arrangement similar to that for ALBUNEX established  pursuant to this Agreement,
provided,  however,  Mallinckrodt  and MBI shall  negotiate  in good faith as to
which party shall have the right to manufacture  any product  resulting from the
Developed Competing Technology.

        (d)Notwithstanding the foregoing,  Mallinckrodt shall have no obligation
under  this  Section  7.05  if  Mallinckrodt  does  not  use or  plan to use the
Mallinckrodt   Purchased   Competing   Technology  or  the  Developed  Competing
Technology,  or if MBI does not use or plan to use the MBI  Purchased  Competing
Technology,  to compete with ALBUNEX in the market for in vivo  contrast  agents
for ultrasound and echocardiography diagnostic imaging.

                                    Article 8

                                     Patents

        8.01Patent Expenses.

     (a)Mallinckrodt shall be responsible for the expenses of the maintenance of
(x) U.S.  Patent No.  4,573,203  entitled  "Contact  (sic) Agents for Ultrasound
Imaging" issued February 25, 1986, and (y) U.S.  Patent No.  4,572,203  entitled
"Contrast Agents for Ultrasonic Imaging" issued January 12, 1988, a continuation
in part of U.S. Patent No. 4,572,203, and any current continuing applications or
future  applications  thereof in the United States of America or Canada,  and of
the continuation  and maintenance of the 3 U.S.  pending patent  applications of
Dr. Kenneth Widder assigned to MBI in the United States of America or Canada.

        (b)With respect to any other patent filings,  Mallinckrodt and MBI shall
notify the other of any  potentially  patentable  invention  relating to ALBUNEX
covering  any  portion  of  the  Know-how  or  Technology  Rights.  The  parties
thereafter  shall meet and discuss the  appropriateness  and  strategy of filing
patent applications in any country of the Territory,  the Additional  Territory,
[omitted; filed separately with the Commission].

        (c)If MBI, in its reasonable  discretion,  determines to file any patent
application  in  the  Territory,  the  Additional  Territory,   [omitted;  filed
separately  with  the  Commission]  covering  any  portion  of the  Know-how  or
Technology  Rights,  MBI shall be responsible for prosecution and maintenance of
the patent application, but Mallinckrodt shall be responsible for the payment of
all maintenance fees for the resulting patent (if issued).  (If a third party is
contractually  required  by an  agreement  with MBI to pay any such  maintenance
fees,  however,  Mallinckrodt  shall have no  obligation  to pay them unless MBI
gives  Mallinckrodt  written  notice at least 30 days before payment is due that
the third party has not yet paid them, in which case Mallinckrodt  shall pay the
maintenance  fees on or  before  the date due if MBI  requests  (unless,  in the
meanwhile, the third party pays them).

        (d)If  MBI  does  not  file  a  particular  patent  application  in  the
Territory,  the  Additional  Territory,  [omitted;  filed  separately  with  the
Commission]   covering  any  portion  of  the  Know-how  or  Technology  Rights,
Mallinckrodt  may  request  MBI to do so,  and  if MBI  declines  Mallinckrodt's
request  (either  by  informing  Mallinckrodt  to that  effect or by  failing to
respond to Mallinckrodt's  request within 30 days after receipt of the request),
Mallinckrodt may file, prosecute and maintain that patent application. MBI shall
provide  Mallinckrodt  with  sufficient  information  (to the  extent  in  MBI's
possession  or under its control)  and other  cooperation  (including  necessary
signatures of MBI employees) to permit  Mallinckrodt  to do so. If  Mallinckrodt
does so, it shall be responsible for the payment of all maintenance  fees of the
resulting patent (if issued).

        (e)MBI and  Mallinckrodt  shall  each  cooperate  and render  reasonable
assistance to the other in connection  with the activities  contemplated by this
Section 8.01.

        8.02Patent Infringement.

        (a)Mallinckrodt's  Right To Enforce.  Mallinckrodt shall have the right,
with  respect to any injury or loss  suffered  or  threatened  to be suffered by
Mallinckrodt as a result of the infringement or threatened infringement of MBI's
patents  relating  to  ALBUNEX  in  the  Territory,  the  Additional  Territory,
[omitted;  filed  separately  with the  Commission],  to enforce MBI's  affected
patents and prosecute infringers,  if MBI elects not to bring suit covering such
injury or loss within 3 months after the earlier of (i) the date that MBI learns
of any such patent  infringement  other than by written notice from Mallinckrodt
or (ii) the date that  Mallinckrodt  gives MBI written notice of any such patent
infringement.

        (b)Cooperation. In the event either party hereto shall initiate or carry
on legal proceedings to enforce patents against an alleged infringer,  the other
party hereto shall fully cooperate with the party initiating or carrying on such
proceedings.

        (c)Litigation  Procedures.  Either party shall have the right during the
time that this Agreement is in effect, and subject to its terms (including,  but
not limited to,  Sections  8.01 and 8.02(a)),  to sue  infringers of patents and
either party shall permit the use of its name in all such suits,  shall sign all
necessary  papers,  take all rightful oaths,  and upon reasonable  request shall
assist the other party in such suits at its own expense.

        (d)Litigation by Mallinckrodt. In the event Mallinckrodt shall institute
suit or legal  proceedings  to enforce any  patent,  MBI shall be entitled to be
represented  by  counsel  of its own  choosing,  at its sole  expense.  From any
recovery  awarded  or  settlement  reached  as a  result  of such  suit or legal
proceedings,  Mallinckrodt  (i) may deduct the full  amount of its  expenses  of
prosecuting the same (including attorneys' fees and court costs); (ii) shall pay
to MBI, to the extent  possible  after payment of (i) above,  the full amount of
MBI's cost of  participating  in the same;  (iii)  shall pay to MBI,  after full
payment  of (i) and (ii)  above,  (A) 40% of any  remainder  to the  extent  the
recovery  relates to the period  prior to MBI's  exercise of its  options  under
Sections  9.01(a) or (b) or 9.06, and (B) 50% of any remainder to the extent the
recovery or settlement relates to any period thereafter in which  Mallinckrodt's
licenses under this Agreement had not  terminated  under Section  14.03(b) (with
the  exception in either case that to the extent that the recovery or settlement
is  in  respect  of   Mallinckrodt's   injuries  or  losses  regarding   ALBUNEX
manufactured by Mallinckrodt  [omitted;  filed  separately with the Commission],
the amount payable to MBI under this Section  8.02(d)(iii) shall be a percentage
of the remainder  determined in a manner  consistent with the royalty payable by
Mallinckrodt in respect of Net Sales of such ALBUNEX [omitted;  filed separately
with the  Commission],  as the case may be);  and (iv) may retain  the  balance.
Mallinckrodt  shall  not  discontinue  or settle  any such  suit or other  legal
proceedings  brought by it without obtaining the prior concurrence of MBI, which
shall not be  unreasonably  withheld  and  giving  MBI a timely  opportunity  to
continue such  proceedings  in its own name,  under its sole control at its sole
expense,  provided that Mallinckrodt's reasonable litigation expenses (including
attorneys fees and court costs) shall be reimbursed by MBI.

        (e)Litigation  by MBI.  In the event MBI shall  institute  suit or legal
proceedings  to enforce  any patent and the suit or legal  proceedings  are,  in
whole or in part,  in respect of any injury or loss suffered or threatened to be
suffered  by  Mallinckrodt  as  a  result  of  the  infringement  or  threatened
infringement  of  MBI's  patents  relating  to  ALBUNEX  in the  Territory,  the
Additional   Territory,   [omitted;   filed  separately  with  the  Commission],
Mallinckrodt shall be entitled to be represented by counsel of its own choosing,
at its sole expense. From any recovery awarded or settlement reached as a result
of such suit or legal  proceedings,  MBI (i) may deduct  the full  amount of its
expenses of prosecuting  the same  (including  attorneys' fees and court costs);
(ii) shall pay to  Mallinckrodt,  to the extent  possible  after  payment of (i)
above,  the full amount of  Mallinckrodt's  cost of  participating  in the same;
(iii) shall pay to  Mallinckrodt,  after full payment of (i) and (ii) above, (A)
60% of any  remainder  to the extent the recovery or  settlement  relates to the
period prior to MBI's exercise of its options under  Sections  9.01(a) or (b) or
9.06 and is in respect of Mallinckrodt's  injuries or losses, and (B) 50% of any
remainder  to the  extent  the  recovery  or  settlement  relates  to any period
thereafter  in  which  Mallinckrodt's  licenses  under  this  Agreement  had not
terminated under Section 14.03(b) and is in respect of  Mallinckrodt's  injuries
or  losses  (with the  exception  in either  case  that to the  extent  that the
recovery  or  settlement  is in respect  of  Mallinckrodt's  injuries  or losses
regarding ALBUNEX manufactured by Mallinckrodt  [omitted;  filed separately with
the  Commission],   the  amount  payable  to  Mallinckrodt  under  this  Section
8.02(e)(iii)  shall  be  the  remainder  less  a  percentage  of  the  remainder
determined in a manner  consistent  with the royalty  payable by Mallinckrodt in
respect  of Net  Sales  of such  ALBUNEX  [omitted;  filed  separately  with the
Commission], as the case may be); and (iv) may retain the balance. MBI shall not
discontinue  or settle any such suit or other  legal  proceedings  brought by it
without  obtaining the prior  concurrence  of  Mallinckrodt,  which shall not be
unreasonably  withheld, and giving Mallinckrodt a timely opportunity to continue
such  proceedings  in its own  name,  under  its sole  control,  and at its sole
expense, provided that MBI's reasonable litigation expenses (including attorneys
fees and court costs) shall be reimbursed by Mallinckrodt.

        8.03Payments to Third Parties. In the event that the manufacture, use or
sale of  ALBUNEX,  in  Mallinckrodt's  and  MBI's  reasonable  judgment  present
potential  infringement  problems  with  respect to any patent  owned by a third
party, and in  Mallinckrodt's  and MBI's reasonable  judgment it is commercially
reasonable to secure a license thereunder, Mallinckrodt and MBI shall attempt to
secure a license  thereunder for Mallinckrodt  and MBI. Any royalty  obligations
respecting such third party patents shall be paid 60% by Mallinckrodt and 40% by
MBI except if any claim of  infringement  by such third  party would fall within
the scope of Section 8.04(a),  in which event MBI shall pay 100% of such royalty
obligations.

        8.04Patent Indemnification.

        (a)MBI shall  indemnify and hold harmless  Mallinckrodt  against any and
all Losses based on and resulting from any claim of  infringement  of any patent
of a third  party in the  United  States of  America,  Canada,  [omitted;  filed
separately with the Commission], Australia or New Zealand and which claim arises
from  Mallinckrodt's  manufacture,  use or  sale  of  ALBUNEX  pursuant  to this
Agreement.

        (b)With  respect to any other  Losses  based on and  resulting  from any
claim  of  infringement  of  any  patent  in a  country  in the  Territory,  the
Additional  Territory,  [omitted;  filed separately with the Commission]  (other
than a country named or referred to Section  8.04(a)) and which claim arose from
Mallinckrodt's  manufacture,  use or sale of ALBUNEX pursuant to this Agreement,
Mallinckrodt  shall be  responsible  for 60% of any such  Loss and MBI  shall be
responsible  for 40% of any such Loss (with the exception  that if any such Loss
is in respect of ALBUNEX manufactured by Mallinckrodt [omitted; filed separately
with the  Commission],  MBI shall be  responsible  for a percentage  of the Loss
determined in a manner  consistent  with the royalty  payable by Mallinckrodt in
respect  of Net  Sales  of such  ALBUNEX  [omitted;  filed  separately  with the
Commission],  as the case may be and  Mallinckrodt  shall be responsible for the
remainder of the Loss).

        (c)In the event any third party  asserts  any claim with  respect to any
matter  as to which the  indemnities  in this  Section  8.04  relate,  the party
against whom the claim is asserted  shall give prompt notice to the other party.
The party who has the  responsibility  to pay the entire  potential  Loss or the
greatest  share of the  potential  Loss,  as the case may be (the  "Indemnifying
Party"),  shall  have the  right at its  election  to take over the  defense  or
settlement  of the third party claim at its own expense by giving  prompt notice
to the other party (the "Indemnified Party"). If the Indemnifying Party does not
give such  notice and does not proceed  diligently  so to defend the third party
claim within 30 days after  receipt of the notice of the third party claim,  the
Indemnifying  Party  shall  be  bound  by any  defense  or  settlement  that the
Indemnified  Party  may  make  as to  those  claims,  and  shall  reimburse  the
Indemnified  Party  for its  Losses  and  expenses  related  to the  defense  or
settlement of the third party claim.  The  Indemnifying  Party shall be bound by
any  settlement  that the  Indemnified  Party  may  make,  however,  only if the
Indemnified  Party gives the  Indemnifying  Party at least 15 days prior written
notice of the settlement and either (i) the  Indemnifying  Party does not object
to the proposed  settlement by written notice to the Indemnified Party within 10
days after receipt of the Indemnified Party's notice or (ii) if the Indemnifying
Party does timely object to the proposed settlement, the Indemnifying Party does
not at the same time agree to (A)  undertake  the  further  defense of the third
party claim,  (B) indemnify the Indemnified  Party for any Loss in excess of its
proposed  settlement and (C) reimburse the Indemnified  Party for its reasonable
expenses  related to the defense of the third party  claim.  Upon request of the
Indemnified  Party,  the Indemnified  Party shall be consulted from time to time
and be  informed  of the status of the third  party  claim.  The  parties  shall
cooperate in defending against any asserted third party claims.  For purposes of
this Section  8.04,  the  indemnification  of the  Indemnified  Party shall also
include  the  indemnification  of the  Indemnified  Party's  employees,  agents,
Affiliates, and third parties performing services for the Indemnified Party.

                                    Article 9

                            Rights To Acquire ALBUNEX

        9.01  Negotiations  to Acquire  ALBUNEX.  Except as  provided in Section
3.02, for a period (the  "Exclusive  Period")  commencing  with the execution of
this Agreement and ending on the earlier of:

             (1) the date  specified  for  closing  of MBI's  repurchase  of the
        Repurchasable  Shares if MBI (A) exercises the Stock  Repurchase  Option
        and (B) tenders the full purchase price of the  Repurchasable  Shares on
        that date  (regardless  of  whether  Mallinckrodt  or any  Affiliate  of
        Mallinckrodt fails to close the sale of its Repurchasable Shares), or

             (2) the later of (A) the third anniversary of the date that the FDA
        approves an intravenous  myocardial  perfusion indication of ALBUNEX for
        sale in the United States or (B) July 1, 2003,

MBI shall not sell or otherwise  dispose of (by license or otherwise) any of its
rights,  assets or  technology  relating  to  ALBUNEX or MBI's  interest  in any
Technology  Rights or  Know-How.  During  the  Exclusive  Period  either  MBI or
Mallinckrodt  may initiate good faith  discussions  regarding the acquisition by
Mallinckrodt  of any of the  foregoing.  If at the end of the  Exclusive  Period
Mallinckrodt and MBI have not agreed to such an acquisition,  MBI shall have the
following  options  separately  as to  each  of the  Territory,  the  Additional
Territory, [omitted; filed separately with the Commission]:

        (a) Subject to the right of  Mallinckrodt  to continue to distribute and
sell ALBUNEX in the same territory  pursuant to the licenses  granted in Article
7, MBI may co-market and distribute ALBUNEX in a particular  territory under the
MBI label and for its own account  and may do so in the same manner  (including,
but not  limited to, the use of  distributors  or sales  representatives),  on a
country-by-country  basis,  as  Mallinckrodt  from time to time may  market  and
distribute ALBUNEX in that territory;

        (b) Subject to the right of  Mallinckrodt  to continue to distribute and
sell ALBUNEX in the same territory pursuant to this Agreement and Mallinckrodt's
right of first refusal under Section 9.04:

        (1) If the  Exclusive  Period ends on the date  specified for closing of
        MBI's  purchase of the  Repurchasable  Shares,  as  described in Section
        9.01(1),  then until the later of the third anniversary of the date that
        the FDA  approves an  intravenous  myocardial  perfusion  indication  of
        ALBUNEX for sale in the United  States or July 1, 2003,  MBI may sell or
        dispose of (which sale or disposition  may take the form,  among others,
        of a  merger  or a  sale  of  all  of  the  stock  of  MBI or all of the
        ALBUNEX-related  assets,  but may not  take  the  form of a  license  or
        sublicense) to a single transferee, other than pursuant to an assignment
        permitted in Section 16.02(d), in a single transaction, all but not less
        than all, of MBI's rights,  assets and technology relating to ALBUNEX in
        all    territories    (i.e.,    the   transfer   may   not   be   on   a
        territory-by-territory  basis) and all,  but not less than all, of MBI's
        interest  in any  Technology  Rights or  Know-how  as it  relates to all
        territories,  and such transferee shall not be subject to the any of the
        limitations  and  restrictions  on MBI  under  this  Section  9.01 or to
        Mallinckrodt's right of first refusal under Section 9.04; or

        (2) If the Exclusive  Period ends on the later of the third  anniversary
        of the date that the FDA approves an  intravenous  myocardial  perfusion
        indication  of ALBUNEX for sale in the United States or July 1, 2003, as
        described in Section  9.01(2),  or if the Exclusive  Period ended on the
        date  specified  for closing of MBI's  repurchase  of the  Repurchasable
        Shares,  then as of the later of the third  anniversary of the date that
        the FDA  approves an  intravenous  myocardial  perfusion  indication  of
        ALBUNEX for sale in the United States or July 1, 2003,,  MBI may sell or
        dispose of (by license or otherwise) to a single transferee,  other than
        pursuant to an  assignment  permitted in Article  16.02(d),  in a single
        transaction,  all but not less than all,  of MBI's  rights,  assets  and
        technology  relating to ALBUNEX in a particular  territory  and all, but
        not less  than  all,  of MBI's  interest  in any  Technology  Rights  or
        Know-how as it relates to that territory,  and such transferee shall not
        be subject to the any of the limitations  and  restrictions on MBI under
        this  Section 9.01 or to  Mallinckrodt's  right of first  refusal  under
        Section 9.04; or

        (c)  MBI  may  continue  its  existing  relationship  with  Mallinckrodt
pursuant to the terms of this  Agreement in a particular  territory,  subject to
MBI's  option to exercise its rights  under  Sections  9.01(a) or (b) at a later
time.

        The exercise of option (a) by MBI at any time in respect of a particular
territory shall not preclude MBI from  exercising  option (b) at a later time in
respect of that territory.

        MBI's options under this Section 9.01 shall be in addition to its rights
under  Section  3.02 in respect of the  Additional  Territory,  [omitted;  filed
separately with the  Commission],  which MBI may exercise at any time during the
Exclusive Period in accordance with the terms of Section 3.02.

        9.02 Option To Repurchase Stock.  During the period beginning on (i) the
later of (A) July 1, 2000 or (B) the date that the FDA  approves an  intravenous
myocardial  perfusion  indication  of ALBUNEX for sale in the United  States and
ending on (ii) the later of (C) one day  prior to the third  anniversary  of the
date that the FDA approves an  intravenous  myocardial  perfusion  indication of
ALBUNEX for sale in the United  States or (D) June 30, 2003,  MBI shall have the
option (the "Stock  Repurchase  Option") to repurchase from Mallinckrodt and its
Affiliates  all (but not less than all) of the  following  MBI  securities  (the
"Repurchasable  Shares")  which  Mallinckrodt  and its Affiliates may own at the
time,  if any: (I) shares of Common  Stock (as "Common  Stock" is defined in the
1995 Investment  Agreement) and (II) MBI securities  issued in respect of shares
of Common Stock by reason of a stock split, stock dividend,  recapitalization or
similar event. The Stock Repurchase Option shall be exercisable as follows:

        (a) MBI may exercise the Stock Repurchase  Option only by written notice
of  exercise  to  Mallinckrodt  specifying  the date on which  closing  of MBI's
repurchase shall occur, which may not be less than 10 or more than 30 days after
the date of MBI's notice.  (Because the Stock  Repurchase  Option is intended to
permit MBI to terminate the  Exclusive  Period  earlier than it would  otherwise
terminate,  MBI may exercise the Stock Repurchase Option even if, at the time of
exercise,  Mallinckrodt and its Affiliates do not own any Repurchasable  Shares.
If MBI exercises the Stock Repurchase Option in this event,  Mallinckrodt  shall
have no obligations  under Section  9.02(c) other than its obligation to provide
MBI  with  Mallinckrodt's  certification  of the  amount  described  in  Section
9.02(b)(3).)

        (b)  The purchase price of the Repurchasable Shares shall be the sum of:

             (1)  $45,000,000; plus

             (2)  an amount (which shall not be less than zero) equal to:

                  (A) one-half of the aggregate amounts paid by Mallinckrodt to
              MBI pursuant to the Nycomed Territory Agreement (other than
              amounts in respect of ALBUNEX purchases or sales) for the purpose
              of acquiring rights in the Nycomed territory; minus

                  (B)  [omitted;  filed  separately  with  the  Commission]  (in
              respect of MBI's granting  Mallinckrodt its distribution and other
              rights  under  this  Agreement  in the  countries  other  than the
              People's  Republic  of  China,  Australia  and New  Zealand  which
              constitute the Additional Territory); minus

             (3) the aggregate net proceeds of sale realized by Mallinckrodt and
        its Affiliates from the sale of  Repurchasable  Shares prior to the date
        specified for closing of MBI's repurchase.

        (c) The closing of MBI's  repurchase of the  Repurchasable  Shares shall
take place at MBI's principal  office,  unless MBI and  Mallinckrodt  agree on a
different location. At closing, (i) MBI shall pay the full purchase price of the
Repurchasable Shares by certified or cashier's check or checks, wire transfer of
immediately available funds to an account or accounts designated by Mallinckrodt
at  least  two  business  days  prior  to the  closing  or  cancellation  of any
undisputed  indebtedness  of Mallinckrodt to MBI under this Agreement (or by any
combination  of  these  ways as MBI  determines),  and (ii)  Mallinckrodt  shall
deliver the stock  certificate or certificates  representing  the  Repurchasable
Shares,  duly  endorsed  for  transfer in blank or  accompanied  by  appropriate
instruments of assignment duly signed in blank. MBI and Mallinckrodt  shall also
provide customary and appropriate  representations  to one another regarding the
purchase and sale of the Repurchasable  Shares and any additional  documentation
reasonably  requested by the other party (for example,  Mallinckrodt may request
an opinion of counsel to MBI that MBI's purchase of the Repurchasable Shares has
been duly  authorized by MBI's board of directors and that MBI's  purchase is in
compliance with all applicable  laws). In addition,  Mallinckrodt  shall provide
MBI  with  Mallinckrodt's  certification  of the  amount  described  in  Section
9.02(b)(3).

      9.03  Prior  Notification.  If MBI  exercises  its  options  under  either
Sections  9.01(a)  or (b),  MBI shall  provide  to  Mallinckrodt,  at no cost to
Mallinckrodt and sufficiently in advance,  all necessary technical  information,
licenses,   patents,   permits  and   assistance  to  enable   Mallinckrodt   to
independently  manufacture,  use, produce and  commercially  sell ALBUNEX in the
affected  territory at a date not later than the earlier of the  commencement of
production or sale of ALBUNEX by MBI pursuant to Section 9.01(a),  or by a third
party purchasing under Section 9.01(b). In such an event:

        (w) MBI shall supply to Mallinckrodt  pursuant to the terms of Article 2
      a reasonable  quantity of ALBUNEX to ensure that Mallinckrodt has adequate
      inventories  of ALBUNEX to satisfy  reasonably  foreseeable  demand in the
      affected territory;

        (x) all of Section 2.04(f) except the first sentence shall terminate in
      respect  of the  affected territory;

        (y) the following  provisions shall terminate in respect of the affected
      territory  on the date  Mallinckrodt  begins to  manufacture  ALBUNEX  for
      commercial  sale in the  affected  territory:  the first two  sentences of
      Section  2.03;  Sections  2.04(c),  (e),  (g),  (i)(a)  and (j);  Sections
      2.05(b),  (c) and (d);  Section 2.06(a);  Sections 2.07 and 2.08;  Section
      2.09(c);  Sections 2.10 and 2.11; Sections 2.12(a),  (b) and (c); Sections
      2.13 and 2.14; Sections 3.05, 3.06 and Section 3.07; and Sections 7.04 and
      7.05; and

        (z)  MBI  shall  be  relieved  of its  obligation  to  sell  ALBUNEX  to
      Mallinckrodt  for  sale  in  the  affected  territory  on  the  date  that
      Mallinckrodt  begins  to  manufacture  ALBUNEX  for  sale in the  affected
      territory.

      9.04  Mallinckrodt's  Right of First  Refusal.  MBI grants  Mallinckrodt a
right of first refusal to purchase MBI's rights,  assets and technology relating
to ALBUNEX in each of the Territory,  the Additional Territory,  [omitted; filed
separately with the Commission],  and MBI's interest in any Technology Rights or
Know-how (collectively,  in respect of any particular territory,  the "Assets"),
as follows:

        (a) If MBI  proposes  to sell the  Assets,  MBI shall give  Mallinckrodt
written notice of MBI's intention (the "Sales  Notice"),  providing all relevant
details and copies of all relevant  documents,  including but not limited to any
letter of intent and any draft or executory sales agreement.

        (b)  Mallinckrodt  shall  have 45 days from the date it  receives  MBI's
Sales  Notice in which to exercise  its right of first  refusal to purchase  the
Assets  specified in the Sales  Notice,  at the purchase  price and on the terms
specified in the Sales Notice,  by giving MBI written notice to that effect.  If
Mallinckrodt  notifies MBI that  Mallinckrodt  declines to exercise its right of
first refusal,  or if Mallinckrodt  fails to exercise its right of first refusal
in a  timely  manner,  MBI may  proceed  to sell  the  Assets  to the  purchaser
identified  in the Sales  Notice  but only at a  purchase  price and on terms at
least as favorable to MBI as those  specified in the Sales Notice.  If MBI fails
to consummate  such sale within 75 days of the Sale Notice,  then the provisions
of  this  Section  9.04  shall  thereafter  apply  to  any  subsequent  proposed
disposition of the Assets.

        (c) If the purchase  price  specified  in the Sales Notice  includes any
property  other than money,  MBI and  Mallinckrodt  shall jointly  determine the
value of this other property. If they are unable to agree on its value within 45
days from the date  Mallinckrodt  receives  MBI's Sales Notice,  they shall each
promptly select a nationally or regionally recognized investment banking firm or
consulting  firm,  and  these 2  firms  shall  select  a third  such  firm  (the
"Valuation  Firm") to determine the value of this other property.  The Valuation
Firm's  determination shall be conclusive.  MBI and Mallinckrodt shall use their
best efforts to ensure that the Valuation Firm makes its determination not later
than 5 business days after its selection.  The period in which  Mallinckrodt may
exercise its right of first  refusal  shall be extended to 5 business days after
the Valuation Firm's determination. MBI and Mallinckrodt shall each pay the fees
of the firm that it selects and one-half of the fees of the Valuation Firm.

        (d) In the  case  of a  proposed  sale  of the  Assets  relating  to the
Territory, Mallinckrodt shall have a credit against the purchase price specified
in MBI's Sales Notice equal to:

             (1)  the sum of the payments by Mallinckrodt pursuant to Sections
        4.01 and 4.02 less

             (2) an amount equal to 40% of Net Sales in the  Territory  prior to
        the  date  of  Mallinckrodt's  receipt  of the  Sales  Notice  (if  such
        difference is less than zero, there shall be no credit).

        (e)  [Omitted; filed separately with the Commission]:

             (1)  [omitted; filed separately with the Commission]

             (2)  [omitted; filed separately with the Commission]

        (f)  [Omitted; filed separately with the Commission]:

             (1)  [omitted; filed separately with the Commission]

             (2)  [omitted; filed separately with the Commission]

        (g) If Mallinckrodt exercises its right of first refusal, closing of its
purchase shall take place on the date and at the location that the parties agree
on,  but no later than 75 days  after the date of  Mallinckrodt's  notice to MBI
exercising Mallinckrodt's right of first refusal.

        9.05 Mallinckrodt Abandonment of ALBUNEX.

        (a) Mallinckrodt shall be deemed to have abandoned ALBUNEX if all of the
following conditions occur after the Launch Date:

             (1) ALBUNEX may be lawfully sold in the United States of America in
        interstate  commerce,  without any threat of infringement upon any third
        party  rights,  any  threat  of any  action  by any  regulatory  agency,
        including  but not limited to the FDA, or any threat of product  recall,
        or any  danger  to the  safety  of the users of  ALBUNEX  or the  public
        generally;

             (2)  MBI has supplied and continues  to  offer to  supply, ALBUNEX
        in sufficient quantities to Mallinckrodt conforming to the Product
        Specifications; and

             (3)  Mallinckrodt  has failed to offer at least one Albunex Product
        for sale in the ordinary  course of business for a continuous  period of
        not less than 180 days.

        (b) Upon satisfaction of all the conditions described in Section 9.05(a)
and receipt by Mallinckrodt of the following:

             (1) Payment by cashier's  check or by wire transfer in  immediately
        available  funds  an  amount  equal  to  the  sums  previously  paid  by
        Mallinckrodt to MBI pursuant to Sections 4.01, 4.02 and 10.01; and

             (2) An  Unconditional  Waiver  and  Release  pursuant  to which MBI
        waives any and all rights,  claims,  damages or other  remedies  against
        Mallinckrodt   relating  to  or  out  of  this  Agreement,   in  a  form
        satisfactory to counsel for Mallinckrodt;

this Agreement shall terminate.

      9.06   Mallinckrodt Failure to Expend Adequate Resources.

        (a)  Mallinckrodt  shall be  deemed to have  failed  to commit  adequate
resources  to the  marketing,  sale or  distribution  of  ALBUNEX  if all of the
following conditions occur:

             (1) Prior to the Launch Date  Mallinckrodt  fails to spend at least
        $500,000 in out of pocket costs in the pre-marketing,  marketing, sales,
        distribution,  or  promotion  of ALBUNEX,  including  but not limited to
        advertising,  marketing  literature,  symposia,  focus  groups,  product
        promotion,  trade and industry shows, and the recruitment of medical and
        scientific opinion leaders;

             (2) During the first year  following  the Launch Date  Mallinckrodt
        fails  to  spend  at  least  $500,000  in out  of  pocket  costs  in the
        marketing,  sales, distribution,  or promotion of ALBUNEX, including but
        not  limited  to  advertising,  marketing  literature,  symposia,  focus
        groups, product promotion, trade and industry shows, and the recruitment
        of medical and scientific opinion leaders; and

             (3)  Mallinckrodt  fails to spend such  amounts  within the 180 day
        period  beginning on the date MBI notifies  Mallinckrodt in writing that
        Mallinckrodt has failed to spend the such amounts.

        (b) Upon satisfaction of all the conditions described in Section 9.06(a)
and receipt by Mallinckrodt of payment by cashier's check or by wire transfer in
immediately  available  funds  in an  amount  equal  to  one-half  of  the  sums
previously  paid by  Mallinckrodt  to MBI  pursuant to Sections  4.01,  4.02 and
10.01,  subject to the right of  Mallinckrodt to continue to distribute and sell
ALBUNEX in the Territory pursuant to this Agreement, the provisions of Article 2
shall  terminate and MBI may co-market and  distribute  ALBUNEX in the Territory
under  the MBI label and for its own  account  and may do so in the same  manner
(including,   but  not   limited   to,   the  use  of   distributors   or  sales
representatives),  on a  country-by-country  basis, as Mallinckrodt from time to
time may market and distribute ALBUNEX in the Territory.

                                   Article 10

                            Payments to Key Employees

      10.01  Key Employee Payments.

        (a) Subject to the terms and  conditions of this Section  10.01,  during
the 2 year period  commencing on the Launch Date of ALBUNEX by  Mallinckrodt  if
the first  commercial  sale of ALBUNEX  after the Launch Date  actually  occurs,
Mallinckrodt  shall,  at times to be  agreed  to by the  parties,  pay to MBI an
aggregate of  $2,500,000  upon  accomplishment  of the  milestones  described in
Section 10.01(b). Mallinckrodt and MBI agree that a minimum payment shall be due
by the due date of MBI's  tax  return  for  MBI's  tax year in which  the  first
commercial  sale of ALBUNEX  after the Launch Date  actually  occurs  (including
extensions  thereof as are actually  obtained by MBI) of an amount equal to that
which is certified by MBI's independent public accountants to be the increase in
MBI's actual federal and state income tax liability, if any, due on such date as
a  result  of  MBI's  accrual  into  income  of the  full  amount  to be paid by
Mallinckrodt  under this Section  10.01  provided  that no such minimum  payment
shall be due prior to the first  actual  commercial  sale of  ALBUNEX  after the
Launch Date. MBI shall advise  Mallinckrodt of this amount no later than 30 days
prior to the filing of MBI's return and shall afford  Mallinckrodt  a reasonable
opportunity  to  verify  the  accuracy  of  such  amount.  The  amounts  paid by
Mallinckrodt  to MBI shall be  distributed  by MBI to such  employees  of MBI as
shall be mutually agreed to by MBI and Mallinckrodt.

        (b) The portion of the $2,500,000  attributable to the accomplishment of
the applicable milestone shall be determined as follows:


                Amount                                       Milestone

               $400,000                       Commencement  of initial Phase III
                                              of the first Human Clinical Trials
                                              for   ALBUNEX  as   described   in
                                              Appendix 4 [Section 4.01(a)].

              $400,000                        MBI's submission to the FDA either
                                              its initial PMA application or its
                                              initial   NDA    application   for
                                              ALBUNEX [Section 4.01(b)].

              $400,000                        FDA's  acceptance  of either MBI's
                                              initial PMA application or initial
                                              NDA    application   for   ALBUNEX
                                              [Section 4.01(c)].

              $950,000                        FDA's   issuance  of  its  initial
                                              approval  letter for ALBUNEX  with
                                              the  specifications at least equal
                                              to those set forth in  Appendix  4
                                              [Section 4.01(d)].

              $350,000                        Mallinckrodt's acceptance of MBI's
                                              first commercial shipment of
                                              ALBUNEX  under Article 2 [Section
                                              4.01(e)].

The foregoing  amounts  relating to any  particular  milestone  shall be due and
payable  so  long as the  stated  milestone  is  achieved  by MBI and the  first
commercial  sale of  ALBUNEX  after the  Launch  Date  actually  occurs.  If any
particular milestone is not achieved, then Mallinckrodt shall have no obligation
to pay the amount related to such milestone.  In no event shall  Mallinckrodt be
obligated to make payments  except with respect to the first instance in which a
particular  milestone is achieved and then only if the first  commercial sale of
ALBUNEX after the Launch Date actually occurs.

        (c) As each  milestone  is achieved by MBI,  the amount  related to such
milestone  will accrue and bear  interest at the from time to time prime rate of
interest of Citibank,  N.A.  commencing  on the date the related  payment  under
Section 4.01 is due until the amount is paid.  Notwithstanding  anything in this
Section 10.01 to the contrary, Mallinckrodt shall have no obligation to make any
payments  under  this  Section  10.01,  including  interest,  unless  and  until
Mallinckrodt or its Affiliates  makes its first commercial sale of ALBUNEX after
the Launch Date.

        (d)  Notwithstanding  anything to the contrary in this Section 10.01, no
MBI employee shall be a third party  beneficiary to this Section 10.01 and shall
not be entitled to bring suit to enforce this Section 10.01.

      10.02 Supplemental  Payments.  In the event  Mallinckrodt  purchases MBI's
assets as described in the first paragraph of Section 9.01,  Mallinckrodt  shall
pay  an  aggregate  of   $2,500,000  to  key  MBI  employees  as  designated  by
Mallinckrodt  and MBI in portions upon  achievement of ALBUNEX  objectives to be
agreed  to  by  MBI  and  Mallinckrodt.   Furthermore,  upon  such  purchase  by
Mallinckrodt, Mallinckrodt agrees to employ the key employees of MBI on mutually
agreeable terms. Notwithstanding anything to the contrary in this Section 10.02,
no MBI employee  shall be a third party  beneficiary  to this Section  10.02 and
shall not be entitled to bring suit to enforce this Section 10.02.

                                   Article 11

                              Commercial Viability

      11.01 Determination of Commercial  Viability.  If the commercial viability
of ALBUNEX is  seriously  jeopardized  such that the  continued  development  of
ALBUNEX will not result in a commercially  viable product to Mallinckrodt,  then
Mallinckrodt  shall initiate good faith  discussions  with MBI to terminate this
Agreement  effective  with the date such  discussions  are  initiated,  provided
however,  that if such  discussions  do not result in  resolution of the matter,
they shall be subject  to  arbitration  under  Article  12 to  determine  if the
commercial viability of ALBUNEX is seriously jeopardized such that the continued
development  of ALBUNEX  will not  result in a  commercially  viable  product to
Mallinckrodt.  If such  arbitrators  determine that the commercial  viability of
ALBUNEX is so jeopardized,  then Mallinckrodt  shall have the immediate right to
terminate  this  Agreement   effective  with  the  date  such  discussions  were
initiated.  This  Section  11.01  shall be  effective  until the FDA permits the
marketing of ALBUNEX with the indications set forth in Appendix 4.

      11.02 Payments Pending  Resolution of Commercial  Viability.  Mallinckrodt
shall  continue to make any  quarterly  payments  for  milestones  described  in
Section  4.01  which  have  occurred  prior to the date that  discussions  under
Section  11.01  are  initiated.  Except  as  provided  in  this  Section  11.02,
Mallinckrodt,  at its sole  discretion,  may  suspend  all or any portion of the
payments due under Article 4 which are  attributable  to events  occurring on or
after the date that discussions  under Section 11.01 are initiated.  The parties
agree that a decision of the  arbitrators  required under Section 11.01 shall be
rendered  within 90 days after the  appointment of such  arbitrators and further
agree to instruct  the  arbitrators  accordingly  and act  expeditiously  in the
presentation of the dispute to the  arbitrator.  In the event that a decision of
the arbitrators is not rendered  within such 90 day period,  then upon execution
of a mutually  acceptable  escrow  agreement with an  independent  escrow agent,
Mallinckrodt  shall make all payments due under Article 4 which are attributable
to events  occurring on or after the date that  discussions  under Section 11.01
are  initiated to the  independent  escrow agent to be held in trust pending the
decision  of  arbitrators.  If the  arbitrators  determine  that the  commercial
viability  of  ALBUNEX  is  seriously   jeopardized   such  that  the  continued
development  of ALBUNEX  will not  result in a  commercially  viable  product to
Mallinckrodt,  then all amounts held in trust by the  independent  escrow agent,
together  with any  interest  earned  thereon,  shall be  promptly  returned  to
Mallinckrodt.  If the arbitrators do not determine that the commercial viability
of ALBUNEX is  seriously  jeopardized  such that the  continued  development  of
ALBUNEX will not result in a commercially  viable product to Mallinckrodt,  then
all amounts held in trust by the  independent  escrow  agent,  together with any
interest earned thereon, shall be promptly paid to MBI.

                                   Article 12

                               Dispute Resolution

      12.01  Arbitration.  Except as otherwise  provided in Sections 2.16(c) and
12.02, any claim, dispute, question or controversy arising out of or relating to
this  Agreement  or any  amendment or  modification  hereto,  or breach  thereof
("Dispute"),  shall be settled by binding  arbitration  in  accordance  with the
Commercial Arbitration Rules of the American Arbitration  Association ("AAA") in
the County of St.  Louis,  Missouri,  pursuant  to the award of a panel of three
arbitrators,  and  judgement  upon the award may be entered in any court  having
jurisdiction thereof. The Expedited Rules of the AAA shall apply.

      12.02  Injunctions.  The parties  recognize and agree that  arbitration is
inadequate to enforce (a) the confidential  restrictions  contained in Article 5
and the  provisions in Articles 2 or 6 regarding  compliance  with  governmental
health and safety laws and  regulations a breach of which would pose an imminent
danger to public health and safety,  (b) the provisions  requiring  arbitration,
(c) the sale of ALBUNEX  by  Mallinckrodt  in the  continents  of Europe,  Asia,
Africa or Australia  other than as and when permitted by this Agreement or (d) a
decision of the arbitrator  under Section  2.16(c) (an "Event"),  a violation of
which will cause irreparable harm and unascertainable damages. The parties agree
that an aggrieved  party shall be entitled as a matter of right to an injunction
from a court of  competent  jurisdiction  restraining  any actual or  threatened
Event.  The rights to injunctive  relief shall be in addition to and not in lieu
of the right to arbitrate Disputes.

      12.03 Costs and Missouri Courts.  The fees and expenses of the arbitrators
shall be shared equally by Mallinckrodt and MBI. Mallinckrodt and MBI consent to
the jurisdiction of the United States District Court for the Eastern District of
Missouri,  and if such District Court shall not have  jurisdiction in the matter
for any  reason,  to the  jurisdiction  of the  Circuit  Court  of the  State of
Missouri for the 21st Judicial Circuit, for all purposes in connection with this
Agreement, including entry of judgment relating to any award of the arbitrators.
The  arbitration and any award rendered  pursuant  thereto shall be governed by,
construed and enforced in accordance with the laws of the State of Missouri.

                                   Article 13

                                 Indemnification

      13.01  Indemnification  by MBI.  MBI  shall  indemnify  and hold  harmless
Mallinckrodt  against  any and all  Losses  based on or  resulting  from (a) any
breach of the  representations  and warranties of MBI contained herein;  (b) any
breach of any warranty by MBI (express or implied) relating to ALBUNEX;  (c) any
or all claims  arising from the use of ALBUNEX  provided by MBI to  Mallinckrodt
pursuant  to Article 2,  including,  but not  limited to, any claim for death or
personal  injury or damage or loss of  property  which shall have been caused or
alleged to have been caused by any  negligence on the part of MBI or its agents,
any  defect in design,  materials  or  workmanship  used in ALBUNEX or any claim
under a theory  of  strict  liability;  (d) any  inaccuracies  contained  in the
Product Literature based on information provided by MBI or any other information
supplied by MBI with ALBUNEX;  (e) any governmental  recall of ALBUNEX due to or
arising  out of an act or  omission  of MBI,  or, (f) in the event that  ALBUNEX
(other than  ALBUNEX  manufactured  by a party other than MBI or an Affiliate of
MBI) is found not to comply with any governmental regulations,  for any costs or
expenses  incurred by  Mallinckrodt  to bring ALBUNEX into  compliance with such
regulations after consultation with MBI, including,  but not limited,  any costs
and expenses of securing any required governmental permits.  Notwithstanding the
foregoing,  MBI shall not be liable for any of Mallinckrodt's  lost profits as a
result of a breach of Sections 6.02(i) or (j).

      13.02  Indemnification  by Mallinckrodt.  Mallinckrodt shall indemnify and
hold harmless MBI against any and all Losses  sustained by MBI  resulting  from,
arising  out  of  or  connected  with  (i)  any  inaccuracy  in,  breach  of  or
nonfulfillment of, any representation,  warranty, covenant or agreement made by,
or other obligation of, Mallinckrodt  contained in this Agreement or (ii) any or
all claims  arising  from the use of ALBUNEX  manufactured  by  Mallinckrodt  or
acquired  by  Mallinckrodt  from a third  party  (e.g.,  Hafslund  Nycomed  AS),
including,  but not limited to, any claim for death or personal injury or damage
or loss of property  which shall have been caused or alleged to have been caused
(with respect to ALBUNEX so  manufactured  or acquired) by (A) any negligence on
the part of  Mallinckrodt,  its agents or supplier or suppliers of ALBUNEX,  (B)
any defect in design,  materials or workmanship  used in such ALBUNEX or (C) any
claim under a theory of strict liability.

      13.03  Procedures.  In the event any third  party  asserts  any claim with
respect to any matter as to which the indemnities in this Agreement relate,  the
party  against whom the claim is asserted (the  "Indemnified  Party") shall give
prompt  notice  to  the  other  party  (the  "Indemnifying   Party"),   and  the
Indemnifying Party shall have the right at its election to take over the defense
or  settlement  of the third  party  claim at its own  expense by giving  prompt
notice to the Indemnified  Party. If the  Indemnifying  Party does not give such
notice and does not proceed diligently so to defend the third party claim within
30 days after receipt of the notice of the third party claim,  the  Indemnifying
Party shall be bound by any defense or settlement that the Indemnified Party may
make as to those claims and shall reimburse the Indemnified Party for its Losses
and expenses  related to the defense or settlement of the third party claim. The
parties shall  cooperate in defending  against any asserted  third party claims.
For purposes of this Article 13, the  indemnification  of the Indemnified  Party
shall also include the  indemnification  of the Indemnified  Party's  employees,
agents,  Affiliates,  and third parties performing  services for the Indemnified
Party, and the reference to this Agreement  includes any certificate,  schedule,
list,  summary or other  information  provided  or  delivered  to a party by the
Indemnifying  Party  or its  agents  and  affiliates  in  connection  with  this
Agreement.

                                   Article 14

                              Term and Termination

      14.01 Term.  Unless sooner  terminated  pursuant to the provisions of this
Agreement,  the term of this  Agreement  shall continue for the life of the last
patent relating to ALBUNEX to expire.

      14.02  Termination.  This Agreement may be terminated:

        (a)  At any time by mutual written consent of MBI and Mallinckrodt; or

        (b) By either party by notice to the other in the event such other party
shall  dissolve,  cease active  business  operations  or  liquidate  unless this
Agreement  shall have been  assigned to a successor  or  transferee  pursuant to
Section 16.02, or in the event such other party shall have been determined to be
insolvent by a court of competent jurisdiction,  or insolvency or reorganization
proceedings  shall have been commenced by such other party, or such  proceedings
shall have been brought against such other party and remained  undismissed for a
period of 60 days or such other party shall have made a general  assignment  for
the  benefit of  creditors,  or a receiver of all or  substantially  all of such
other  party's  assets shall have been  appointed and not  discharged  within 60
days; or

        (c) By  Mallinckrodt  if MBI  shall  fail to  timely  make  any  payment
required by this  Agreement  and such payment shall not have been made within 30
days after receipt of written demand therefore from Mallinckrodt  unless MBI is,
in good faith,  contesting or disputing its  obligation to make any such payment
or disputing the amount thereof; or

        (d) By MBI if  Mallinckrodt  shall  fail  to  timely  make  any  payment
required by this  Agreement  and such payment shall not have been made within 30
days after receipt of written demand therefore from MBI unless  Mallinckrodt is,
in good faith,  contesting or disputing its  obligation to make any such payment
or disputing the amount thereof; or

        (e) By Mallinckrodt by notice to MBI in the event of a breach or default
by  MBI  of   any   material   obligation,   covenant,   agreement,   condition,
representation or warranty in this Agreement (other than (i) a breach or default
covered  by  Section  14.02(c)  or (ii) a  breach  or  default  of any of  MBI's
Manufacturing  Obligations) if  Mallinckrodt  shall have given written notice to
MBI of such  breach or default  and such  breach or default  shall not have been
remedied  within 60 days  after  receipt  of such  written  notice  and,  if not
remedied by MBI within the 60 day period,  reasonable  steps shall not have been
undertaken  to remedy  such  breach or default  within such period and shall not
have been diligently pursued thereafter; or

        (f) By MBI by notice to Mallinckrodt in the event of a breach or default
by  Mallinckrodt  of any  material  obligation,  covenant or  agreement  in this
Agreement (other than (i) a breach or default covered by Section 14.02(d),  (ii)
a breach or default  under Section  7.01(c)(2)(D)  or (iii) a failure to achieve
any  non-monetary  performance  milestone  listed on Appendix 8A, Appendix 8B or
Appendix  8C) if MBI shall have given  written  notice to  Mallinckrodt  of such
breach or default and such breach or default shall not have been remedied within
60  days  after  receipt  of  such  written  notice  and,  if  not  remedied  by
Mallinckrodt  with the  60-day  period,  reasonable  steps  shall  not have been
undertaken  to remedy  such  breach or default  within such period and shall not
have been diligently pursued thereafter.

      14.03  Survival of Mallinckrodt Licenses and Right of First Refusal.

        (a) If this  Agreement  terminates  by the  expiration of its term under
Section 14.01, the licenses granted to Mallinckrodt by MBI under this Agreement,
and the license granted to MBI by Mallinckrodt in Section 7.02(b), shall survive
and continue as  perpetual,  irrevocable,  paid-up,  royalty-free  non-exclusive
licenses.

        (b) If this Agreement  terminates by the written  consent of the parties
pursuant to Section 14.02(a),  the licenses granted to Mallinckrodt by MBI under
this Agreement,  the license granted to MBI by Mallinckrodt in Section  7.02(b),
Mallinckrodt's  royalty obligations under Section 7.01(c),  Mallinckrodt's right
of first refusal under Section 9.04, and the other  provisions of this Agreement
shall survive as MBI and Mallinckrodt may agree.

        (c) If this  Agreement  terminates  following  notice from  Mallinckrodt
pursuant to Sections 14.02(b), (c) or (e):

        (1) the licenses  granted to  Mallinckrodt  by MBI under this  Agreement
        shall  survive and continue as perpetual  and  irrevocable  licenses but
        shall become non-exclusive as of the latest of (A) the third anniversary
        of the date that the FDA approves an  intravenous  myocardial  perfusion
        indication of ALBUNEX for sale in the United States, (B) July 1, 2003 or
        (C) the date of termination of this Agreement;

        (2) Mallinckrodt's right of first refusal under Section 9.04 shall
        survive;

        (3) Mallinckrodt's  royalty obligations under Sections 7.01(c) [omitted;
        filed  separately with the Commission]  shall survive and continue until
        the expiration of the last patent  relating to ALBUNEX to expire (except
        as otherwise provided in Section 7.01(c));

        (4)  MBI's Stock Repurchase Option shall terminate; and

        (5) the license  granted to MBI by Mallinckrodt in Section 7.02(b) shall
        survive and continue as a perpetual,  irrevocable, paid-up, royalty-free
        license.

        (d) If this Agreement  terminates  following notice from MBI pursuant to
Sections 14.02(b), (d) or (f):

        (1)  subject  to  Section   7.01(c)(1)(C)   the   licenses   granted  to
        Mallinckrodt  by MBI under this Agreement  shall survive and continue as
        perpetual and irrevocable licenses but shall become non-exclusive;

        (2) Mallinckrodt's right of first refusal under Section 9.04 shall
        terminate;

        (3) Mallinckrodt's  royalty obligations under Sections 7.01(c) [omitted;
        filed  separately with the Commission]  shall survive and continue until
        the expiration of the last patent relating to ALBUNEX to expire;

        (4) the license  granted to MBI by Mallinckrodt in Section 7.02(b) shall
        survive and continue as a perpetual,  irrevocable, paid-up, royalty-free
        license; and

             (5)  Sections 2.15, 2.16 and 2.17 shall survive.

      14.04 Effect of Termination. Warranty, confidentiality and indemnification
obligations of the parties,  Article 12, Sections 4.03(a),  7.02(c) through (f),
and 8.02 shall survive termination.

                                   Article 15

                                  Force Majeure

        The  obligations of each party to perform under this Agreement  shall be
subject to any delays caused by Force Majeure, if and only if the party affected
shall have used reasonable  efforts to avoid such Force Majeure and to remedy it
promptly if it shall have occurred.

                                   Article 16

                                  Miscellaneous

      16.01  Relationship of the Parties.  The relationship  hereby  established
between Mallinckrodt and MBI is solely that of independent  contractors and this
Agreement   shall  not  create  an  agency,   partnership,   joint   venture  or
employer/employee  relationship,  and  nothing  hereunder  shall  be  deemed  to
authorize  either  party to act for,  represent  or bind the other or any of its
Affiliates except as expressly provided in this Agreement.

      16.02 Assignment.  This Agreement shall be assignable by either party only
with the written  consent of the other  party  which  shall not be  unreasonably
withheld,  except that (a) either party may assign this Agreement,  without such
consent,  to the purchaser or transferee of all its assets, or of all the assets
of its business to which this Agreement  relates  subject to the  limitations on
transfer of MBI assets  described in Article 9, (b) Mallinckrodt may assign this
Agreement to an Affiliate with a net worth of not less than $10,000,000  without
the consent of MBI,  (c) if permitted  by the  substantive  laws of the State of
Missouri,  Mallinckrodt  may assign a limited  interest in this Agreement,  or a
part of this Agreement, as it relates to one or more countries in any territory,
to an Affiliate  organized under the laws of the country or one of the countries
in question,  and (d) MBI may assign this Agreement to a subsidiary all of whose
stock is owned by MBI. No  assignment  pursuant to clauses (b), (c) or (d) shall
relieve the assignor from any liability under this  Agreement,  and the assignor
shall  guarantee  the  assignee's  full  and  prompt  performance  of all of its
obligations.  MBI shall not  subcontract  or delegate  performance of all or any
part of the work  called for under this  Agreement  without  the  express  prior
written consent of Mallinckrodt which consent shall not be unreasonably withheld
except that it may subcontract its manufacturing  obligations under Article 2 to
Mallinckrodt.

      16.03 Notice. All notices,  communications,  demands and payments required
or  permitted  to be given or made  hereunder  or  pursuant  hereto  shall be in
writing and sent by receipt by certified or registered  mail,  postage  prepaid,
overnight messenger service, telecopier or personal delivery as follows:

        If to Mallinckrodt:

                       Mallinckrodt Medical, Inc.
                       675 McDonnell Blvd.
                       St. Louis, Missouri 63134
                       Attention:  Vice President - Ultrasound Imaging
                       Telecopier:  (314) 895-7281

             with a copy to:

                       Mallinckrodt Medical, Inc.
                       675 McDonnell Blvd.
                       St. Louis, Missouri 63134
                       Attention:  Vice President and General Counsel
                       Telecopier:  (314) 895-7181

             If to MBI:

                  Molecular Biosystems, Inc.
                       10030 Barnes Canyon Road
                       San Diego, California  92121
                       Attention:  Chief Operating Officer
                       Telecopier:  (619) 452-6187

             with a copy to:

                       Craig P. Colmar, Esq.
                       Johnson and Colmar
                       Suite 1000
                       300 South  Wacker Drive
                       Chicago, Illinois 60606
                       Telecopier:  (312) 922-9283

All notices sent by certified or  registered  mail shall be  considered  to have
been given two business days after being deposited in the mail. All notices sent
by  overnight  messenger  service,  telecopier  or  personal  delivery  shall be
considered to have been given when actually received by the intended  recipient.
Either party may change the address  designated  by notifying the other party in
writing.

      16.04 Governing Law. This Agreement is deemed to have been entered into in
the State of Missouri,  and its interpretation,  construction,  and the remedies
for its  enforcement  or breach are to be applied  pursuant to and in accordance
with the substantive laws of the State of Missouri.

      16.05  Validity of  Agreement.  If any  provision  of this  Agreement  is,
becomes,  or is  deemed  invalid  or  unenforceable  in any  jurisdiction,  such
provision  shall be deemed  amended  to conform  to  applicable  law so as to be
valid,  legal and  enforceable in such  jurisdiction  so deeming.  The validity,
legality and  enforceability  of such provision shall not in any way be affected
or impaired  thereby in any other  jurisdiction.  If such provision cannot be so
amended without  materially  altering the intention of the parties,  it shall be
stricken in the  jurisdiction  so deeming,  and the remainder of this  Agreement
shall remain in full force and effect.

      16.06 Waiver.  No waiver of any right under this Agreement shall be deemed
effective  unless  contained in a writing  signed by the party charged with such
waiver, and no waiver of any right arising from any breach or failure to perform
shall be deemed to be a waiver of any future  such  right or of any other  right
arising under this  Agreement.  No failure on the part of any party to exercise,
and no delay in exercising,  any right,  power or remedy hereunder shall operate
as a waiver thereof,  nor shall an single or partial exercise of any such right,
power or remedy by a party preclude any other or further exercise thereof or the
exercise  of any other  right,  power or  remedy.  All  remedies  hereunder  are
cumulative and are not exclusive of any other remedies provided by law.

      16.07 Entire  Agreement.  This Agreement  together with (i) the Investment
Agreement dated as of December 7, 1988 between MBI and Mallinckrodt and (ii) the
1995 Investment  Agreement set forth and constitute the entire agreement between
the parties hereto with respect to the subject matter hereof, and supersedes any
and all prior agreements, promises, understandings, promises and representations
made by either party to the other  concerning  the subject matter hereof and the
terms  applicable  hereto.  Mallinckrodt  shall  not be bound  by and  expressly
objects to any  provisions  additional  to or at variance  with the terms hereof
that may appear in MBI's quotation, acknowledgement, confirmation, invoice or in
any other  prior or later  communication  from MBI to  Mallinckrodt  unless such
provision is expressly  agreed to in writing by  Mallinckrodt  referring to this
Section  16.07  signed  by the  President,  Chief  Operating  Officer  or a Vice
President of  Mallinckrodt.  MBI shall not be bound by and expressly  objects to
any  provisions  additional  to or at  variance  with the terms  hereof that may
appear in Mallinckrodt's quotation, acknowledgement, confirmation, invoice or in
any other  prior or later  communication  from  Mallinckrodt  to MBI unless such
provision  is  expressly  agreed to in writing by MBI  referring to this Section
16.07 signed by the President of MBI.

      16.08 Headings and  References;  Incorporation  of Exhibits.  The headings
contained in this  Agreement are inserted for  convenience of reference only and
shall not be a part, control or affect the meaning hereof. All references herein
to Articles and Sections are to the Articles and Sections of this Agreement. All
references  herein to Appendices  are to the  Appendices  hereto,  each of which
shall be incorporated into and deemed a part of this Agreement.

      16.09 Counterparts.  This Agreement may be executed in counterparts,  each
of which shall be deemed to be an original,  but which together shall constitute
one and the same instrument.

      16.10 Time Is of the Essence.  Mallinckrodt  and MBI acknowledge  that the
successful  commercialization of ALBUNEX is dependent upon the expeditious entry
of ALBUNEX into the market, and consequently,  agree that time is of the essence
for purposes of this Agreement.

      16.11 Setoff. If within 30 days after receipt of written demand any amount
required  to be paid  hereunder  is not paid and  unless  the  payor is, in good
faith,  contesting  or  disputing  its  obligation  to make any such  payment or
disputing the amount thereof,  the payee may set-off any and all amounts owed by
the  payee to the payor  against  any and all  amounts  owed by the payor to the
payee.

      16.12 Interest on Late  Payments.  If any payment due under this Agreement
is not paid in full when due,  interest  shall accrue on the unpaid  amount from
the date due until  paid at a  fluctuating  rate  equal at all times to the rate
2.0% above the rate the First National Bank of Chicago publishes or announces as
its prime or equivalent rate of interest.

      16.13 Payment for Inventory.  As of the Effective Date, Mallinckrodt shall
pay MBI for Mallinckrodt's  inventory of ALBUNEX at the price of [omitted; filed
separately with the  Commission]  per vial for 10 ml. vials and [omitted;  filed
separately  with  the   Commission]  per  vial  for  20  ml.  vials.   The  term
"Mallinckrodt's  inventory" means all ALBUNEX, wherever located, which (i) as of
the  Effective  Date is in the  possession  of  Mallinckrodt  or an Affiliate of
Mallinckrodt,  in the possession of MBI, or in transit from MBI to  Mallinckrodt
or an  Affiliate,  which (ii) MBI  manufactured  for  Mallinckrodt  based on its
orders and  forecasts,  which (iii) has not yet been sold to a  purchaser  other
than Mallinckrodt or an Affiliate of Mallinckrodt and which (iv) conforms to the
Product  Specifications.  Mallinckrodt  shall not owe MBI any additional amounts
under Section 2.14 in respect of this inventory.

      16.14  HSR  Filings.  MBI and  Mallinckrodt  shall  each  comply  with the
Hart-Scott-Rodino   Antitrust   Improvements   Act  of  1976,  as  amended  (the
"Hart-Scott-Rodino  Act"),  by  filing a  premerger  notification  with the U.S.
Department  of Justice  and the U.S.  Federal  Trade  Commission  as promptly as
practicable  after signing this  Agreement,  and shall  respond  promptly to any
inquires from the  Department  of Justice or the Federal  Trade  Commission as a
result of these filings.

      16.15  Effective  Date. To the extent that this Agreement is a restatement
of the Current  Distribution  Agreement,  this Agreement shall be deemed to have
been  effective  since December 7, 1988. To the extent that this Agreement is an
amendment of the Current  Distribution  Agreement,  (i) Sections 16.14 and 16.15
shall be effective as of the date that this  Agreement is signed and (ii) all of
the other changes to the Current  Distribution  Agreement made by this Agreement
shall become  effective if and when all  applicable  waiting  periods  under the
Hart-Scott Rodino Act have expired or have otherwise  terminated (the "Effective
Date"),  without the necessity of any further  action by the parties.  Until the
occurrence of the Effective Date, the Current  Distribution  Agreement (with the
addition of Sections 16.14 and 16.15) shall remain in effect.  MBI  acknowledges
that  Mallinckrodt has previously made all of the payments that Mallinckrodt was
required to make under  Sections  4.01 and 10.01 and that  Mallinckrodt  has not
failed to commit  adequate  resources to the marketing,  sale or distribution of
ALBUNEX, as described in Section 9.06(a).

      IN WITNESS  WHEREOF,  the parties hereunto have executed this Agreement as
to be effective as of the date first written above.

THIS CONTRACT CONTAINS A BINDING ARBITRATION  PROVISION WHICH MAY BE ENFORCED BY
THE PARTIES.


                                                     Molecular Biosystems, Inc.


                                                     By  /s/ Kenneth J. Widder
                                                         Kenneth J. Widder, M.D.
                                                         Chairman and Chief
                                                         Executive Officer


                                                     Mallinckrodt Medical, Inc.



                                                     By  /s/ Robert G. Moussa
                                                         Name:Robert G. Moussa
                                                         Title:   President and
                                                         Chief Executive Officer
<PAGE>
<TABLE>
                                   APPENDIX 1
                                 TRADEMARK LOG   
<CAPTION>

- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
                                                                                                                1ST USE     
TRADEMARK            COUNTRY   MATTER   STATUS     SERIAL       FILING  PUB.      REG. NO.     REG.     FIRST   IN        RENEWAL
                               NUMBER              NUMBER       DATE    DATE                   DATE     USE     COMMERCE  DATE
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
<S>              <C>          <C>       <C>        <C>         <C>      <C>       <C>          <C>      <C>     <C>      <C>        

ALBUNEX          U.S.A        24008.00  Registered 73/622,872  05/26/87 03/29/88 1,492,866    06/21/88 1/22/87 1/22/87   06/21/08
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX          Japan        24008.40  Pending
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX          Taiwan       24008.41  Filing
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX          South Korea  24008.42  Pending    94/47609    12/31/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX          Japan (Engli 24008.43  Registered 63-142487   12/16/88 11/15/90 2,329,969    08/30/91                   08/30/2001
                 & Katakana)
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN United State 24018.00  Allowed    74/397,650           02/14/95
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Argentina    24018.40  Registered             06/24/93          1,512,708    03/31/94                   03/31/04
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Brazil       24018.41  Pending
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Canada       24018.42  Allowed    731,046              02/24/94              05/20/94
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Chile        24018.53  Pending    306,383     05/03/95
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Colombia     24018.43  Pending
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Costa Rica   24018.44  Pending                07/05/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Dominican    24018.45  Registered                                                                       09/14/2013
                 Republic
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Ecuador      24018.46  Pending                06/25/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN El Salvador  24018.47  Published              09/20/93 02/27/95
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Honduras     24018.48  Pending                06/15/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Mexico       24018.49  Pending                07/12/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Panama       24018.54  Pending    076237      06/30/95
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Peru         24018.50  Registered                               033661       12/17/93                   11/30/2003
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Venezuela    24018.51  Published  13116-94    07/20/93 01/09/95
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

ALBUNEX & DESIGN Guatemala    24018.52  Pending                12/20/93
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------
- ---------------- ------------ --------- ---------- ----------- -------- -------- ------------ -------- ------- --------- ----------

</TABLE>

<PAGE>
                                   APPENDIX 2
                                   PATENT LOG

<TABLE>
<CAPTION>
- ----------  --------  --------------  --------------  --------  ------------  ----------  ------------- --------  ------------------

INTEREST    FIRST    SUBJECT MATTER   COUNSEL       REFERENCE  COUNTRY OR         STATUS  APPLICATION   APPLI-    PATENT NO ISSUE/  
LICENSOR) INVENTOR   (PROJECT CODE)   DOCKET         NUMBER      REGION                      NUMBER     CATION    PUBL. NO. (PUBL.
                                                                                                        DATE                DATE)
- ----------  --------  --------------  --------------  --------  ------------  ----------  ------------- --------  -----------------
                    
ULTRASOUND  **   ULTRASOUND **     ULTRASOUND **   ULTRASOUND * *     ULTRASOUND * * * ULTRASOUND     **   ULTRASOUND **
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
<S>         <C>      <C>             <C>            <C>        <C>          <C>          <C>            <C>       <C>      <C>   

Licensee   Feinstein ALBUNEX (150)   24843-20029.00  ALB-1-US1 US            ISSUED      461,664        01/27/83 4,672,203 02/26/88 
(Feinstein                                                                                                                          
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20029.42  ALB-1-AT1 AUSTRIA       ISSUED      84/4A9004      01/26/84 397,034b  01/25/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-AU1 AUSTRALIA     ISSUED      84/26769       01/26/84  571863   08/16/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20029.44  ALB-1-BR1 BRAZIL        ABANDONED   P18404941      09/26/84
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20029.45  ALB-1-CA1 CANADA        ISSUED      446,243        01/27/84 1221759   05/12/87
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-.20029.47 ALB-1-DE1 GERMANY       ISSUED      P3490013.6     01/26/84 3490013   03/15/90
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-EP1 EUROPE        ISSUED      849003217      01/26/84 EP135563  08/29/90
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-FR1 FRANCE        ISSUED      8401207        01/26/84 2,541,108 04/03/92
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-28052.00  ALB-1-GB1 GREAT BRITIAN ISSUED (TER 8423446        01/26/84 2,143,327 10/22/86
                      GRANTED)                                               EXTENSION
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-IL1 ISRAEL        ISSUED      70784          01/26/84 70784     04/01/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-JP1 JAPAN         ISSUED (TER 84/501032      01/26/84 1598466   05/28/96
                      ALLOWED)                                               EXTENSION
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20029.50  ALB-1-NL1 NETHERLANDS   PENDING     8420041        01/26/84 191079    12/19/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-1           ALB-1-SE1 SWEDEN        ISSUED (TER 8404797-6      01/26/84 8404797-6 03/16/92
                      PENDING)                                               EXTENSION
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20029.40  ALB-1-WO1 PCT           PUBLISHED   US 84/00135    01/27/83 (84/02838)(08/02/84
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                                                                                    
                     ALBUNEX         UIA-2           ALB-1-US2 US            ISSUED(CIP  805,975        05/12/86 4,718,433 01/12/88 
                                                                             OF ALB-1-US                                            
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-2/3         ALB-1-AU2 AUSTRALIA     ISSUED      86/66097       12/05/86 575735    08/04/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20030.41  ALB-1-CA2 CANADA        ISSUED      524,419        12/03/86 1274773   10/02/90
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     UIA-2/3         ALB-1-EP2 EUROPE        ISSUED      86116943.1     12/05/86 (224934)  01/29/92)
                                                                             (IN OPPOSIT
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20030.42  ALB-1-JP2 JAPAN         ISSUED      86/289108      12/05/86 1677653   07/13/92
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                                     ALB-1-NL2 NETHERLANDS   ISSUED      86/16943.1     12/05/86 0224934
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                                                                                    
                     ALBUNEX         UIA-3           ALB-1-US3 US            ISSUED (CIP 103,807        10/01/87 4,774,968 10/04/88 
                                                                             OF ALB-1-US                                            
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                                                                                   
ASSIGNEE   WIDDER    ALBUNEX (150)   24843-20018.00  ALB-2-US1 US            ISSUED (TER  139,576        12/29/87 4,844,882 07/04/89
                                                                             EXTENSION                                              
                                                                             PE`NDING)                                              
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.52  ALB-2-AT1 AUSTRIA       ALLOWED     88/120371.5    12/06/88 0324938   11/18/93
                                                                             (IN OPPOSIT
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.40  ALB-2-AU1 AUSTRALIA     ISSUED      88/25581       11/30/88 603178    03/19/91
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.53  ALB-2-BE1 BELGIUM       PENDING     88120371.5     12/15/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.41  ALB-2-CA1 CANADA        ISSUED      581,985        11/02/88 1,325,590 12/28/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.61  ALB-2-CH1 SWITZERLAND   PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.42  ALB-2-CN1 CHINA         GRANTED     88105824.5     12/28/88 88105824.604/07/95
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.55  ALB-2-DE1 GERMANY       PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.43  ALB-2-DK1 DENMARK       PENDING     88/7216        12/23/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.44  ALB-2-EP1 EUROPE        ALLOWED     88120371.5     12/06/88 0 324 938 11/18/93 
                                                                             (IN OPPOSIT                                            
                                                                                                                                    
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.45  ALB-2-FI1 FINLAND       ISSUED (TER 886016         12/28/88 93698     04/05/95
                      PENDING)                                               EXTENSION
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.54  ALB-2-FR1 FRANCE        PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.56  ALB-2-GB1 GREAT BRITIAN PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.46  ALB-2-IE1 IRELAND       ISSUED      3127/88        10/14/88 61591     11/16/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.47  ALB-2-IL1 ISRAEL        ALLOWED?    88039          10/13/88 139,576?  10/16/92?
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.57  ALB-2-IT1 ITALY         PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.48  ALB-2-JP1 JAPAN         PUBLISHED   63-323826      12/23/88 (6-62445) (08/17/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.49  ALB-2-KR1 SOUTH KOREA   PENDING     88/17665       12/28/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.58  ALB-2-LU1 LUXEMBOURG    PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.59  ALB-2-NL1 NETHERLANDS   PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.50  ALB-2-NO1 NORWAY        PENDING     885796         12/28/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.60  ALB-2-SE1 SWEDEN        PENDING     88120371.5     12/06/88
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20018.51  ALB-2-TW1 TAIWAN        ISSUED      77109126       12/29/88 037100    02/01/90
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   WIDDER    ALBUENX (150)                   ALB-3-US1 US            ABANDONED   139,577        12/29/87                    
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   CERNY     ALBUNEX (150)   24843-20019.00  ALB-4-US1 US            ISSUED      244,844        09/14/88 4,957,656 09/18/90 
                                                                                                                                    
                                                                                                                                    
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.40  ALB-4-AU1 AUSTRALIA     ISSUED      41312          09/13/89 617,216   03/18/92
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.61  ALB-4-AT1 AUSTRIA       PENDING     89116982.3     09/13/89
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.52  ALB-4-BE1 BELGIUM       ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.41  ALB-4-CA1 CANADA        ALLOWED     610,631        09/07/89
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.62  ALB-4-CH1 SWITZERLAND   ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.54  ALB-4-DE1 GERMANY       ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.42  ALB-4-DK1 DENMARK       PENDING     89/4511        09/13/89
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.43  ALB-4-EP1 EUROPE        ISSUED      89116982.3     09/13/89 359,246 B103/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.60  ALB-4-ES1 SPAIN         ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.44  ALB-4-FI1 FINLAND       ISSUED      894335         09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.53  ALB-4-FR1 FRANCE        ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.55  ALB-4-GB1 GREAT BRITIAN ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.56  ALB-4-GR1 GREECE        ISSUED      89116982.3     09/13/89 9/0400599 03/26/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.45  ALB-4-IE1 IIRELAND      ISSUED      89/2837        09/04/89 62602     02/01/95
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.46  ALB-4-IL1 ISRAEL        ISSUED      91593          09/11/89 244,844   06/16/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.57  ALB-4-IT1 ITALY         ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.47  ALB-4-JP1 JAPAN         GRANTED     01-237390      09/12/89 7-20545   (03/08/95
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.48  ALB-4-KR1 SOUTH KOREA   PENDING     89/13246       09/12/89
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.58  ALB-4-LU1 LUXEMBOURG    ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.59  ALB-4-NL1 NETHERLANDS   ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.49  ALB-4-NO1 NORWAY        PENDING     893671         09/13/89
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.61  ALB-4-SE1 SWEDEN        ISSUED      89116982.3     09/13/89 359,246   03/24/93
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20019.50  ALB-4-TW1 TAIWAN        ISSUED      7810-6958      09/08/89 152186    02/21/91
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   LAMBERT   FS (880)        24843-20010.00  AGM-1-US1 US            ABANDONED F 08/086,717     07/02/93                    
                     (COMPOSITIONS)                                          AGM-1-US2                                              
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.41  AGM-1-EP1 EUROPE        PENDING     94304902.3     07/04/94 (633,030) (01/11/95
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.42  AGM-1-IL1 ISRAEL        PENDING     110185         07/01/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.43  AGM-1-MX1 MEXICO        PENDING     845069         07/01/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.46  AGM-1-TW1 TAIWAN        PENDING     83107084       08/01/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.40  AGM-1-WO1 PCT (DESIG. A PENDING     94/07533       07/01/94 (95/01187)(01/12/95
                                                               CONTRACT STAT
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

                                     24843-20010.44  AGM-1-ZA1 SOUTH AFRICA  PENDING     944810         07/04/94
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              PENDING 
                     FS              24843-20010.01  AGM-1-US2 US            (CON OF     08/220,264     03/30/94
                     (ADDED INVENTOR                                         AGM-1-US1
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              ALLOWED 
                     FS              24843-20010.20  AGM-1-US3 US            (CIP OF     08/187,656     01/26/94
                     (PROCESS)                                               AGM-1-US1
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                             PENDING
                     FS              24843-20010.21  AGM-1-US4 US            (CIP OF     08/290,024     08/12/94
                     (COMPOSITIONS)                                          AGM-1-US3
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                             PENDING          
                                     24843-20010.22  AGM-1-US5 US            (CIP OF     08/290,022     08/12/94
                                                                             AGM-1-US2
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              NOT TO BE         
                     FS              24843-20010.24  AGM-1-US6 US             FILED (CIP
                                                                             OF AGM-1-US
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              NOT TO BE 
                     FS              24843-20010.23  AGM-1-US7 US            FILED (CIP 
                                                                             AGM-1-US5
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              PENDING
                     FS (METHOD      24843-20010.10  AGM-1-US8 US             (DIV. OF                   06/06/95
                     (OF MAKING)                                              AGM-1-US
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              PENDING
                     FS (METHOD      24843-20010.11  AGM-1-US9 US            (DIV. OF                   06/06/95
                     OF IMAGING)                                             AGM-1-US
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   LOHRMANN  FS (880)        24843-20021.00  AGM-2-US1 US            PENDING     08/284,782     08/02/94                    
                     (FLUORINATED                                                                                                   
                      SHELLS)                                                                                                       
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              PENDING
                                     24843-20021.10  AGM-2-US2 US            (DIV. OF                   05/22/95
                                                                             AGM-2-US
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
                                                                              PENDING     
                                     24843-20021.11  AGM-2-US3 US            (DIV. OF                    05/22/95
                                                                             AGM-2-US
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   JABLONSKI FS              24843-30040.00  AGM-5-US1 US            PROVISIONAL                06/08/95                    
                     GAS EXCHANGE                                                                                                   
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASIGNEE    JABLONSKI FS              24843-20040.00  AGM-5-US1 US            PENDING                    06/07/95                    
                     (GAS EXCHANGE)                                                                                                 
                                                                                                                                    
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   HASHIMOTO FS (BLOCK       24843-20032.00  BCP-1-US1 US            PENDING                    06/0695
                     COPOLYMER SHELL
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------

ASSIGNEE   LOHRMANN  FS (HYDROPHOBIZ 24843-20036.00  DPM-1-US1 US            PENDING                    06/07/95
                     SHELL)
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
- ---------- --------- --------------- --------------- --------- ------------- ----------- -------------- -------- -------------------
</TABLE>

<PAGE>
                                   Appendix 3


                             MBI Cardiac Indications

                                (Section 2.01(d))



Intravenous Indication

Albunex  is  indicated  for IV  administration  to  enhance  image  contrast  in
diagnostic echocardiography.

Clinical Applications

1.       Cardiac Performance

         Albunex can enhance  visualization of endocardial borders enabling more
         reliable and complete  measurement of cardiac structure and calculation
         of performance  indices including stroke volume and ejection  fraction.
         Wall thickness and wall motion can be more easily evaluated.

2.       Detection of Physiological Defects

         Contrast  enhancement  can be utilized to examine the physical size and
         shape of the various  cardiac  structures  and their ability to perform
         intended physiological functions including:

         o         valvular performance including quantitation of regurgitant
                   fraction in conjunction with valvuloplasty particularly flow
                   distribution

         o         size and shape of the heart as well as individual chambers
                   and structures

         o         intracardiac shunts that permit leakage between the chambers

         o         dyskinetic regions of the heart wall; and

         o         enhancement of color flow doppler for low flow states and in
                   areas of turbulence.

3.       Assessment of Myocardial Perfusion

         Contrast  enhancement  of blood  flowing to the heart muscle may enable
ultrasonic evaluation of perfusion.





Intra Arterial Administration Indication

Albunex  is  indicated  for  the   intra-arterial   administration  in  contrast
ultrasound in patients requiring perfusion assessment of the myocardium.

Clinical Applications

To  evaluate  myocardial  perfusion  before  and  after  angioplasty,   coronary
thrombolysis, or intraoperatively during coronary by-pass grafting.


<PAGE>


                                   Appendix 4

                           Current ALBUNEX Indication

                    (Section 2.01(c), 4.01(a) and (d), 12.01)



         Opacification of right and left chambers of the heart after intravenous
administration.


<PAGE>


                                   Appendix 5

                         Current Product Specifications

                                 (Section 2.02)


                    STANDARD OPERATING PROCEDURE Page 1 of 10
                                  DOCUMENT: 195


- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              011                                195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

- -------------------------------------------------------------------------------
DISTRIBUTION                              IMMEDIATE CHANGE REQUEST (CR) ATTACHED

Normal
- --------------------------------------------------------------------------------
WRITTEN BY:                                  AUTHORIZATION SIGNATURES:

NAME:                                                            RESEARCH:
DATE:                                                                DATE:
                                                      PRODUCT DEVELOPMENT:
                                                                     DATE:
                                                        QUALITY ASSURANCE:
                                                                     DATE:

- --------------------------------------------------------------------------------
CR NUMBERS INCORPORATED IN THIS EDITION




- --------------------------------------------------------------------------------
SUMMARY OF CHANGES
New



- --------------------------------------------------------------------------------
INSTRUCTIONS



<PAGE>


                    STANDARD OPERATING PROCEDURE Page 2 of 10
                                  DOCUMENT: 195


- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                       195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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

SUBJECT

Albunex (TM), Echocardiography Contrast Microspheres For Investigational Use

         FINAL PRODUCT RELEASE PROTOCOL

PURPOSE

To Document the final product release testing  criteria  performed to assure the
safety and uniformity of the investigational agent.


<PAGE>


                    STANDARD OPERATING PROCEDURE Page 3 of 10
                                  DOCUMENT: 195


- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                        195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.0      Release Protocol

         Source and lot of Albumin (Human) used in this lot of Albunex(TM)

         Source:

         Lot No.:

         Exp. Date:

         Attach certificate of analysis from manufacturer.


<PAGE>


                    STANDARD OPERATING PROCEDURE Page 4 of 10
                                  DOCUMENT: 195


- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                       195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.1      Sterility (SOP 184)

         Performed by:

         Date Started:

         Result:  /       / Pass            /       / Fail


<PAGE>


                    STANDARD OPERATING PROCEDURE Page 5 of 10
                                  DOCUMENT: 195



- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                                195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.2      Pyrogenicity (SOP 183)

         Performed by:

         Date Started:

         Result:  /       / Pass            /       / Fail


<PAGE>


                    STANDARD OPERATING PROCEDURE Page 6 of 10
                                  DOCUMENT: 195



- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                                195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.3      General Safety (SOP 186)

         Performed by:

         Date Started:

         Result:  /       / Pass            /       / Fail


<PAGE>


                    STANDARD OPERATING PROCEDURE Page 7 of 10
                                  DOCUMENT: 195



- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                                195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.4      Physical Appearance

         After 8 hours undisturbed at room temperature:

         Describe:



         Free of extraneous particulate matter:

         /       / Yes              /       / No

         Observed by:                                              Date:

         After inverting vial 20 times:

         Describe:





<PAGE>


                    STANDARD OPERATING PROCEDURE Page 8 of 10
                                  DOCUMENT: 195



- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                     195
- --------------------------------------------------------------------------------
NAME
                         Final Product Release Protocol

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


3.5      pH

         Value:

         Specification:             (6.4 - 7.4)

         Performed:                                                    Date:


<PAGE>


                    STANDARD OPERATION PROCEDURE Page 9 of 10
                                  DOCUMENT: 195



- --------------------------------------------------------------------------------
EFFEC. DATE                         REV. NO.                  DOCUMENT NO.

1/1/88                              001                       195
- --------------------------------------------------------------------------------
NAME
                                         Final Product Release Protocol

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


3.6      Coulter Counter Analysis

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

         Test               Result           Specification        Pass/Fail
         -----------------------------------------------------------------------

         Concentration                      (3-5 x 108/mL)
         -----------------------------------------------------------------------

         Mean Diameter                      (3-5 microns)
         -----------------------------------------------------------------------

         Size Distribution                  (95% 10.1 microns)
         -----------------------------------------------------------------------

         Maximum Size                       (32 microns)
         -----------------------------------------------------------------------





         Performed by:                                                 Date:


<PAGE>


                                   Appendix 6

                                Quality Assurance

                                (Section 2.04(e))

                            Certificates of Analysis



Certificates of Analysis must contain the following information:

       1.    It must  identify  the  issuing  organization  and contain the
             signature  and  title  of the  person  authorized  to  release
             product to the market.  The site Quality Manager of first line
             designee is an appropriate level of signature.

       2.    It must clearly identify the product name, catalog or identifying 
             number, lot or batch number, and the date of issuance.

       3.    It must address each and every quality characteristic listed in the
             specification.

       4.    It  must   clearly  list  the  quality   characteristic,   the
             conformance  requirement,  and the  actual  results  obtained.
             Certificates  which only carry such  statements  as "a typical
             analysis  is...",  or refer to product  literature  for normal
             values with  statements as "this lot meets the nominal  values
             listed in product bulletin..." are not acceptable.

An acceptable visual layout example is attached.


<PAGE>



               * * * Example Certificate of Analysis Format * * *

                  [Prepare On Issuing Organization Letterhead]

                             Certificate of Analysis



         Product Name:                               Date:

         Catalog Number:                             Lot Number:

    QUALITY                CONFORMANCE
CHARACTERISTICS            REQUIREMENTS                       RESULTS


Appearance                 comparable to standard
                           (Conforms)

pH                         3.8 - 7.4

Reconstitution             suspends within 2 minutes
                           (conforms)

Radiochemical Purity       90% minimum                                  %

Supernatant                10% minimum activity                         %

Particle Size              90% between 10 - 90um                        %
                           0% greater than 150um                        %

Aggregated Albumin         1.75 - 2.25 mg/vial                    mg/vial
                                                                              

Soluble Albumin            0.6 +/- 0.2mg/vial                     mg/vial

Weight Variation           100 - 125 mg/vial                      mg/vial
                                                                      

Bacterial Endotoxins       not more than 175 USP 
                            endotoxin units/dose                  Eu/dose

Safety                     negative

Bio Assay                  90% minimum to lung                          %



Residual Moisture          10% minimum                                  %
Sterility                  negative

Expiration Date            1 year from date of manufacture



Signature of Authorized
Quality Department Representative
<PAGE>

                                                       
                                   Appendix 7


                       Joint Steering Committee Procedures

                                 (Section 2.16)


1.    The Joint Steering  Committee (the "Committee")  shall be composed of four
      members,  two  to  be  appointed  by  MBI  and  two  to  be  appointed  by
      Mallinckrodt.

2.    To be binding on the parties, all decisions of the Committee must be voted
      on by all four members of the Committee.

3.    Any member of the Committee may cast his or her vote by proxy given to
      another member of the Committee.

4.    The time and place of meetings of the  Committee  shall be  determined  by
      mutual agreement of MBI and Mallinckrodt.  In the event of a dispute,  the
      decision as to time and place will alternate  between the parties.  Formal
      notice of the meeting  shall be delivered to each member of the  Committee
      at least 10  business  days in advance  of the  meeting.  Meetings  of the
      Committee may be held by teleconference.

5.    Written minutes of each meeting of the Committee shall be kept by a member
      of the  Committee  to be elected  by all  members  of the  Committee.  All
      decisions  of the  Committee  shall be  recorded  in the  minutes  of each
      meeting. Minutes shall be approved by all members of the Committee.

6.    Each party shall bear the  expenses of its  representatives  with  respect
      to attendance at meetings of the Committee.

7.    Either MBI or  Mallinckrodt  can submit  proposals to the Committee.  Each
      proposal must be in detail and delivered at least five business days prior
      to the meeting at which the party  submitting the proposal  requests it to
      be considered.

8.    All protocols  for a clinical  trial for which the Committee has authority
      shall be  submitted  to all members at least 10  business  days before the
      meeting of the Committee at which the clinical trial will be discussed.

9.    The Committee shall have the authority to appoint working groups comprised
      of employees of one or both of the parties to accomplish specific tasks in
      furtherance of fulfilling the Committee's objectives.

10.   The  Committee  shall  develop  master  development  plans for the ALBUNEX
      currently being marketed by Mallinckrodt and for the product which MBI has
      currently  code-named  FS069,  and shall  update and amend  these plans as
      circumstances change.


<PAGE>
         
                                   Appendix 8A

               Performance Milestones for the Additional Territory

                                (Section 3.02(a))

a.    The Joint Steering  Committee (the  "Committee")  shall establish a master
      development  plan for  ALBUNEX in the major  countries  of the  Additional
      Territory,   which  shall  include  a  timetable   for  its   development.
      Mallinckrodt  shall  complete  such studies  according to that  timetable.
      Mallinckrodt  shall propose said  development  plan, which shall include a
      reasonable development timetable,  to the Committee within 9 months of the
      Effective  Date,  and  shall  support  the  development  plan  within  the
      Committee.

b.    Mallinckrodt will initiate meetings with appropriate  regulatory agencies,
      if any,  within 6 months of  formal  establishment  of master  development
      plan.

c.    Mallinckrodt  shall initiate the commercial launch of ALBUNEX in two major
      countries of the Additional Territory,  to be designated by the Committee,
      within three months of approval in each designated country, respectively.


                                   Appendix 8B

                [Omitted; filed separately with the Commission.]

                                   Appendix 8C

                [Omitted; filed separately with the Commission.]


                        Notes to Appendices 8A, 8B, & 8C

1.    Any delay caused by the FDA or its foreign equivalent will extend the time
      to complete the milestone in question by the time to remedy the regulatory
      situation.

2.    Mallinckrodt may opt to extend a given milestone one time only for up to 6
      months,  upon 10  days'  written  notice  to MBI  prior  to the  projected
      completion  date of the  milestone  and a concurrent  payment of [omitted;
      filed separately with the Commission] per month of the extension.

                              Investment Agreement



        This  Agreement  is entered  into as of  September  7, 1995 by Molecular
Biosystems,  Inc., a Delaware corporation with an address at 10030 Barnes Canyon
Road, San Diego,  California 92121 ("MBI"),  and Mallinckrodt  Medical,  Inc., a
Delaware corporation with an address at 675 McDonnell Boulevard, Post Office Box
5840, St.
Louis, Missouri 63134 ("Mallinckrodt").

                                    Recitals

        Concurrently with entering into this Agreement, MBI and Mallinckrodt are
entering into an Amended and Restated  Distribution  Agreement (the "Amended and
Restated  Distribution  Agreement")  amending  and  restating  the  Distribution
Agreement that they entered into as of December 7, 1988.

        In connection  with (and as a condition  of) the parties'  entering into
the Amended  and  Restated  Distribution  Agreement,  Mallinckrodt  will make an
additional  equity  investment in MBI on the terms and subject to the conditions
of this Agreement.

        Now, therefore,  in consideration of their mutual promises,  the parties
agree as follows:

                                    Article 1

                                   Definitions

        As used in this  Agreement,  the following terms shall have the meanings
specified below:

        1.01 Affiliate shall mean,  with respect to a corporation,  association,
partnership,   individual,  trust  or  unincorporated  organization,  any  other
corporation,  association,  partnership,  individual,  trust  or  unincorporated
organization  that,  directly or  indirectly,  controls,  is controlled by or is
under  common   control  with  such   corporation,   association,   partnership,
individual, trust or unincorporated organization.

        1.02 Agreement  shall mean this  Investment  Agreement,  as amended from
time to time.

        1.03 Balance Sheet shall mean the March 31, 1995 consolidated balance 
sheet of MBI.

        1.04 Balance Sheet Date shall mean March 31, 1995.

        1.05 business day shall mean any day of the week except Saturday, Sunday
and any legal holiday observed by a national  banking  association or one of the
parties.

        1.06 Closing shall mean the closing of the transaction contemplated by
this Agreement. The date of Closing shall be the "Effective Date" as defined in
Section 16.15 of the Amended and Restated Distribution Agreement, at such time 
and place as Mallinckrodt and MBI may agree.

        1.07 Commission  shall mean the Securities and Exchange  Commission,  or
any other federal agency at the time administering the Securities Act.

        1.08 Common Stock shall mean the shares of MBI common  stock,  par value
$.01 per share, issued to Mallinckrodt pursuant to this Agreement. Shares of MBI
common stock  constituting  shares of "Common Stock" shall cease to be shares of
Common Stock if and when they cease to be owned by  Mallinckrodt or an Affiliate
of Mallinckrodt.

        1.09 Distribution  Agreement shall mean the Distribution Agreement dated
as of December 7, 1988 between MBI and Mallinckrodt,  as amended and restated by
the Amended and Restated Distribution Agreement.

        1.10  Exchange Act shall mean the  Securities  Exchange Act of 1934,  as
amended, or any similar successor Federal statute, and the rules and regulations
of the Commission issued under such Act, as they each may, from time to time, be
in effect.

        1.11  Holder or Holders shall mean the owner or owners of Registrable
 Shares.

        1.12  Mallinckrodt shall mean Mallinckrodt Medical, Inc., a Delaware 
corporation.

        1.13  MBI shall mean Molecular Biosystems, Inc., a Delaware corporation.

        1.14 MBI Securities  shall mean shares of MBI common stock or securities
convertible into shares of MBI common stock. Stock options granted under a Stock
Option  Plan (or  under any other  stock  option  plan that MBI may adopt in the
future) shall not be considered "MBI Securities."

        1.15 1988 Investment Agreement shall mean the Investment Agreement dated
as of December 7, 1988  entered  into by MBI and  Mallinckrodt,  Inc.  (to which
Mallinckrodt  is the  successor  in  interest),  pursuant to which MBI issued to
Mallinckrodt 181,818 shares of MBI common stock.

        1.16 1995 Form 10-K shall mean MBI's annual  report on Form 10-K for the
fiscal year ended March 31, 1995, as filed with the Commission.

        1.17 Other  Common  Stock  shall mean (i) all MBI  Securities  issued in
respect of shares of Common Stock  (because of stock  splits,  stock  dividends,
reclassifications, recapitalizations or similar events), (ii) all MBI Securities
that Mallinckrodt acquires pursuant to Sections 6.02, 6.03 or 6.04 and (iii) all
MBI Securities  issued in respect of MBI Securities that  Mallinckrodt  acquires
pursuant  to  Sections  6.02,  6.03 or 6.04  (because  of  stock  splits,  stock
dividends,   reclassifications,   recapitalizations   or  similar  events).  MBI
Securities  constituting  "Other  Common  Stock"  shall cease to be Other Common
Stock if and when they  cease to be owned by  Mallinckrodt  or an  Affiliate  of
Mallinckrodt.

        1.18  Other  MBI  Securities   shall  mean  all  MBI   Securities   that
Mallinckrodt  acquires  other than shares of Common Stock or Other Common Stock.
MBI Securities  constituting  "Other MBI Securities" shall cease to be Other MBI
Securities if and when they cease to be owned by Mallinckrodt or an Affiliate of
Mallinckrodt.

        1.19  Person  shall  mean  a  corporation,   association,   partnership,
individual,  trust,  unincorporated  organization  and a  government  agency  or
political subdivision thereof.

        1.20 Registrable  Shares shall mean (i) all shares of Common Stock, (ii)
all shares of Other Common Stock and (iii) all Other MBI Securities.

        1.21  Registration Expenses shall mean the expenses described in Section
8.05 of this Agreement.

        1.22 Registration Statement shall mean a registration statement filed by
MBI with the Commission for a public offering and sale of MBI Securities  (other
than a registration  statement on Form S-8 or Form S-4, or their successors,  or
any other form for a limited  purpose,  or any registration  statement  covering
only  securities  proposed to be issued in exchange for  securities or assets of
another corporation).

        1.23  Securities  Act shall mean the Securities Act of 1933, as amended,
or any similar successor  Federal statute,  and the rules and regulations of the
Commission  issued  under such Act, as they each may,  from time to time,  be in
effect.

        1.24 Stock Option  Plans shall mean MBI's 1993 Stock  Option Plan,  1993
Outside  Directors  Stock Option Plan,  1984 Incentive  Stock Option Plan,  1984
Nonstatutory Stock Option Plan and Pre-1984 Nonstatutory Stock Option Plan, each
as amended to date and as it may be amended in the future.

        1.25 Subsidiary  shall mean as of a particular date any corporation more
than 50% of  whose  outstanding  stock  having  ordinary  voting  power  for the
election of directors  shall at the time be owned or controlled by  Mallinckrodt
or MBI or by a Subsidiary of either party.

                                    Article 2

                        Purchase and Sale of Common Stock

        2.01  Common Stock. At the Closing,  MBI will issue and sell, and
Mallinckrodt will purchase, the Common Stock subject to the terms and conditions
set forth in this Agreement.

        2.02 Purchase  Price.  The aggregate  purchase price of the Common Stock
shall be $13,000,000 United States dollars in immediately  available funds to be
delivered  by  Mallinckrodt  to  MBI  at  the  Closing.  The  number  of  shares
constituting the Common Stock shall be equal to the aggregate  purchase price of
the  Common  Stock  divided  by the  purchase  price  per  share  (ignoring  any
fractional share otherwise issuable).  The purchase price per share shall be the
greater of (i) $10.00 or (ii) the  product  determined  by  multiplying  (A) the
average  (mean) of the closing  price of MBI common  stock on the New York Stock
Exchange  on the  five  most  recent  trading  days  preceding  the date of this
Agreement by (B) 1.40.

        2.03 Stock Certificate.  At the Closing, MBI shall deliver to 
Mallinckrodt one stock certificate registered in Mallinckrodt's name 
representing the Common Stock.

                                    Article 3

                         Representations and Warranties

        In order to induce  Mallinckrodt  to purchase the Common Stock described
in Article 2, MBI  represents  and  warrants  to  Mallinckrodt  that,  except as
disclosed on any Appendix to this Agreement, as of the date of this Agreement:

        3.01 Organization,  Subsidiary.  MBI is a corporation legally organized,
validly  existing and in good  standing  under the laws of the State of Delaware
and has all necessary  corporate power and authority to carry on its business as
now  conducted  and as proposed to be conducted  and to own or lease and operate
its   properties.   MBI  has  two   Subsidiaries,   Syngene,   Inc.   and   Scan
Pharmaceuticals, Inc., each of which is a corporation legally organized, validly
existing  and in good  standing  under the laws of the State of Delaware and has
all  necessary  corporate  power and  authority  to carry on its business as now
conducted  and as proposed  to be  conducted  and to own,  lease and operate its
properties.  MBI owns all of the issued and outstanding  stock of Syngene,  Inc.
and Scan  Pharmaceuticals,  Inc. free and clear of all liens,  claims,  security
interest or  encumbrances.  MBI and its two  Subsidiaries  are duly  licensed or
qualified to do business and are in good standing in every jurisdiction in which
the nature of their business or the ownership of their  properties  require such
qualification.  Except for the stock of Syngene,  Inc. and Scan  Pharmaceuticals
and cash equivalents and marketable securities held for investment purposes, MBI
does not control,  or have any  contract or  commitment  to own or control,  any
capital  stock,  bonds or other  securities  of and does not have a  proprietary
interest in, any  corporation,  partnership,  proprietorship  or other  business
organization.  MBI has delivered to Mallinckrodt  complete and correct copies of
MBI's  Certificate of Incorporation  and By-Laws as amended and in effect on the
date hereof.

        3.02  Authorization  and Binding  Effect.  The execution and delivery of
this  Agreement  and the  performance  by MBI of its  obligations  hereunder are
within MBI's  corporate  power,  have been duly  authorized by proper  corporate
action on the part of MBI,  are not in  violation  of, or  constitute  a default
under,  any existing  law,  rule or  regulation  of any  governmental  agency or
authority,  any order or decision of any court, the Certificate of Incorporation
or By-Laws of MBI or the terms of any  agreement,  restriction or undertaking to
which MBI is a party or by which it is bound,  and except  for the  notification
required  by  the  Hart-Scott-Rodino  Antitrust  Improvements  Act of  1976,  as
amended, do not require the approval or consent of or notice to the shareholders
of MBI,  any  governmental  body,  agency or  authority  or any other  person or
entity.

        3.03  Consolidated  Financial Statements;  Other Information.  MBI has
previously delivered to Mallinckrodt true, accurate and complete copies of the 
following documents, including the exhibits and schedules thereto:

              (a) The 1995 Form 10-K, which  incorporates by reference (to MBI's
        1995 Annual Report to Shareholders, which was filed as Exhibit 13 to the
        1995 Form 10-K) the  audited  consolidated  balance  sheets of MBI as of
        March 31, 1995 and 1994,  and the  audited  consolidated  statements  of
        operations,  cash flows and  shareholders'  equity  for the years  ended
        March 31, 1995,  1994 and 1993 (together,  the "Financial  Statements"),
        certified by Arthur Andersen LLP, which were prepared in accordance with
        generally  accepted  principles  of  accounting   consistently   applied
        throughout  the periods  involved,  and, in all material  respects,  are
        correct and complete and fairly  present the financial  condition of MBI
        as of those dates and the results of its  operations  for the years then
        ended;

              (b) MBI's quarterly  report on Form 10-Q for the quarterly  period
        ended June 30, 1995,  as filed with the  Commission  (the "June 30, 1995
        Form  10-Q"),  which  includes  as Item 1 MBI's  unaudited  consolidated
        balance sheet dated June 30, 1995 and unaudited consolidated  statements
        of  operations  and cash flows for the three months ended June 30, 1995.
        These  financial  statements  were prepared in accordance with generally
        accepted accounting  principles consistent with the Financial Statements
        and, in all material respects,  fairly present the financial position of
        MBI as of June  30,  1995  and the  results  of its  operations  for the
        three-month period ended June 30, 1995; and

              (c) The proxy  statement in definitive  form for MBI's 1995 annual
        meeting of  shareholders  to be held on September 7, 1995, as filed with
        the Commission (the "1995 Proxy Statement").

        Except for the 1995 Form 10-K and the June 30,  1995 Form 10-Q,  MBI has
not filed any reports or registration statements with the Commission since March
31, 1995.  MBI has timely filed all reports and other  documents  required to be
filed by it under the Exchange Act, the Securities Act, and any applicable state
securities or  corporation  statutes and  regulations.  The  documents  provided
pursuant to this Section 3.03 did not contain at the time of filing  thereof any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements  therein,  in light of the
circumstances under which they were made, not misleading.

        3.04 Litigation.  Except as set forth in the 1995 Form 10-K and June 30,
1995  Form  10-Q,  there  are no  judicial  or  administrative  actions,  suits,
proceedings or, to the best of MBI's  knowledge,  investigations  pending or, to
the  best of MBI's  knowledge,  threatened,  against  MBI or in  respect  to the
business,  condition,  properties, assets or operations of MBI or which question
the validity of this Agreement or of any action taken or to be taken pursuant to
or in connection with the provisions of this Agreement, and to the best of MBI's
knowledge,  no facts exist which would  constitute  a basis for any such action,
suit,  proceeding or  investigation,  which if concluded  adversely  against MBI
would have a materially adverse effect on the business or financial condition of
MBI.

        3.05 Real and  Personal  Property.  Except as disclosed in Note 5 to the
Financial  Statements  and, in the case of real  property,  except for  recorded
covenants, conditions and restrictions existing at the time of MBI's acquisition
of the property,  all real and personal property that MBI owns is owned free and
clear  of  all  mortgages,   security   interests,   claims,   restrictions  and
encumbrances,  and there exists no restrictions on the use of such property . To
the best of MBI's  knowledge,  all material  contracts,  agreements,  leases and
commitments  with  respect to real or personal  property to which MBI is a party
are legally  valid and  binding  and in full force and effect,  and there are no
material defaults thereunder. None of the rights of MBI under any such leasehold
or  other  interest  in  such  property  will  be  materially  impaired  by  the
consummation  of the  transaction  contemplated  by this  Agreement.  MBI enjoys
peaceful and  undisturbed  possession  under all material  leases under which it
operates.

        3.06  Condition of Real and Personal  Property.  All buildings and other
structures and all machinery,  equipment, tools, dies, fixtures, vehicles, spare
parts  and other  properties  owned,  leased or used by MBI are,  to the best of
MBI's  knowledge,  in good  operating  condition and repair and are adequate and
sufficient  for all  material  operations  conducted by it. To the best of MBI's
knowledge,  none of the real or personal properties owned,  leased,  occupied or
operated by MBI, or the ownership,  leasing,  occupancy or operation thereof, is
in violation of any law or any zoning,  environmental or other ordinance,  code,
rule or regulation,  where such violation would have a materially adverse effect
on the  business  or  financial  condition  of  MBI,  and  no  notice  from  any
governmental  body or other  person has been  served upon MBI or, to the best of
MBI's knowledge,  upon any property owned, leased,  occupied or operated by MBI,
claiming  any  material  violation  of any such law,  ordinance,  code,  rule or
regulation  or  requiring,  or  calling  attention  to the need  for,  any work,
repairs, construction, alterations or installation on or in connection with such
property  which has not been complied  with,  where failure to comply  therewith
would have a materially adverse effect on the business or financial condition of
MBI.

        3.07 Material Contracts.  The contracts listed as Exhibits 10.1-10.52 on
the list of  exhibits  under Part II, Item  14(a)(3) of the 1995 Form 10-K,  and
filed as Exhibits  10.1-10.52  to the 1995 Form 10-K,  were all of the contracts
required  to be  listed  pursuant  to  the  Commission's  instructions  for  the
completion of Form 10-K and filed as exhibits pursuant to Item 601(b)(10) of the
Commission's  Regulation S-K. Except as disclosed in the June 30, 1995 Form 10-Q
and  except  for MBI's  employment  contract  with its new  president  and chief
operating  officer,  MBI has not entered into any contract  since March 31, 1995
which is required  to be filed as an exhibit to a quarterly  report on Form 10-Q
or an annual  report on Form 10-K.  To the best of MBI's  knowledge,  all of the
contracts  filed as exhibits to the 1995 Form 10-K or  disclosed in the June 30,
1995 Form 10-Q or  Appendix  3.07 are in full  force and  effect  and  except as
disclosed on Appendix 3.07, to the best of MBI's knowledge,  all parties to such
contracts  have  performed all  obligations  required to be performed by them to
date, are not in default and do not have a right of rescission.  No employees of
MBI are covered by any collective bargaining agreement.

        3.08 Taxes.  MBI has filed when due all federal,  state and local income
and other tax returns,  reports and declarations which are required to have been
filed by it and has, to the best of MBI's  knowledge,  paid all taxes which have
become  due  pursuant  thereto  and  all  other  taxes,  assessments  and  other
governmental  charges imposed by law upon it or any of its  properties,  assets,
income, receipts, payrolls, transactions, capital, net worth or franchises other
than those not delinquent.  All such tax returns are complete and correct in all
material respects as filed. To the best of MBI's knowledge, there is no tax lien
upon any property or asset of MBI, whether owned or leased, except for liens for
taxes not yet  payable.  To the extent that tax  liabilities  have accrued on or
before the Balance Sheet Date but have not become payable,  to the best of MBI's
knowledge,  they have been  adequately  reflected as  liabilities on the Balance
Sheet and adequate  provision for payment thereof has been made. There have been
no  examinations  by any  state or  federal  taxing  authority  of the books and
financial  statements  of MBI. The  accruals and reserves for federal,  state or
local taxes,  as shown on the Balance  Sheet are adequate in the opinion of MBI.
MBI has not granted any waiver of any statute of limitation  with respect to, or
any  extension of a period for the  assessment  of, any federal,  state or local
tax.  To the best of MBI's  knowledge,  MBI has  withheld  and duly  paid to the
appropriate  governmental  authority  all taxes  required  to be  withheld by it
pursuant to any ordinance, statute or other law.

        3.09 Capitalization. The total number of shares of capital stock, all of
which is voting  common  stock of one class and not  divided  into any series or
other  subdivisions,  and the par value thereof which MBI is authorized to issue
and the number of such shares  which are issued and  outstanding  as of July 17,
1995  (i.e.,  the record  date for  purposes  of  determining  the  shareholders
entitled to vote at MBI's 1995 annual meeting of shareholders) are as follows:

 Authorized Shares       Par Value Per Share       Issued and Outstanding Shares

  20,000,000                     $.01                            12,171,975

The issued and outstanding shares of MBI common stock have been duly and validly
issued and are fully paid and nonassessable,  and the Common Stock, when issued,
will be duly and validly issued and fully paid and  nonassessable.  MBI holds no
shares of its common stock in its  treasury.  Except for stock  options  granted
under a Stock Option Plan, there are no outstanding  options,  warrants or other
rights in existence, other than under this Agreement, to acquire from MBI any of
its shares of capital  stock.  Since the  Balance  Sheet Date there have been no
dividends  or other  distributions  declared or paid in respect of the shares of
capital stock of MBI.

        3.10 Compliance with Instruments, Laws; Governmental Authorizations. MBI
is  not:  (i) in  violation  of any  term or  provision  of its  Certificate  of
Incorporation  or By-Laws or, to the best of MBI's  knowledge,  any governmental
license or permit; or (ii) in violation or default under (and no act or omission
by MBI has  occurred  which,  with the giving of notice or the  passage of time,
would  constitute  a default  under) any material  contract,  agreement or other
instrument to which MBI is a party or by which it is bound; or (iii) to the best
of MBI's  knowledge,  subject  to  enforcement  or threat of  enforcement  or in
violation of any statute, law, ordinance,  rule,  regulation,  judgment,  order,
decree,  permit,  concession,  grant,  franchise,  license or other governmental
authorization  or approval  which is material to MBI's business or the penalties
or other  sanctions for the violation of which  reasonably  could be expected to
have a material  adverse  effect on MBI's business or financial  condition.  All
material  permits,   concessions,   grants,   franchises,   licenses  and  other
governmental  authorizations  and  approvals  necessary  for the  conduct of the
business of MBI have been duly  obtained and are in full force and effect,  and,
to the best of MBI's knowledge,  there are no proceedings  pending or threatened
which may result in the revocation,  cancellation or suspension,  or any adverse
modification,  of any permit,  concession,  grant,  franchise,  license or other
governmental  authorization  which would have a materially adverse effect on the
business or financial  condition of MBI. There have been no material  citations,
fines or  penalties  heretofore  assessed  against MBI and, to the best of MBI's
knowledge,  MBI has complied in all material  respects with any and all federal,
state or local laws,  including but not limited to laws relating to air or water
pollution,  solid waste disposal or other  environmental  protection matters, or
relating to occupation,  health or safety,  and, to the best of MBI's knowledge,
no such  citations,  fines or  penalties  which are material in amount have been
assessed or have been  threatened  since the Balance Sheet Date or are now being
threatened.

        3.11  Patents, Trademarks and Technology Rights.

        (a) All of MBI's United States and foreign  patents,  trademarks,  trade
names, service marks and copyrights relating to ALBUNEX (as "ALBUNEX" is defined
in Section 1.04 of the Amended and Restated Distribution Agreement),  and all of
MBI's pending United States and foreign  applications  for patents,  trademarks,
trade names,  service  marks,  trade  designations  and  copyrights  relating to
ALBUNEX, are described in Appendix 3.11.

        (b) To the best of MBI's  knowledge,  MBI and its successors and assigns
have a right (i) to practice all  ALUNEX-related  processes and process steps as
now practiced or planned to be practiced by MBI, and (ii) to make,  use and sell
throughout the world  ALBUNEX-related  intermediate and other products now made,
used or sold or planned to be made, used or sold by MBI without substantial risk
of infringement of any right, interest, or patent of any third party.

        (c)  MBI  owns  and  possesses,  or is  licensed  as  to,  all  patents,
trademarks,  copyrights  and  such  pending  applications  therefore  and  trade
secrets,   technologies,   know-how,  processes  and  other  proprietary  rights
necessary for conducting its ALBUNEX-related business operations.

        (d) MBI does not have  knowledge of, or any reason to believe that there
exists,  any contest,  litigation,  infringement,  fraud,  misappropriation,  or
misuse  pending or threatened in respect of any patent,  trademark,  trade name,
service  mark,  copyright,  application  therefor,  or any license or  agreement
therefor  (including,  but not  limited,  to the License  Agreement  dated as of
November 5, 1986 between MBI and Steven B. Feinstein, M.D., as amended) which is
necessary for the conduct of its ALBUNEX-related business.

        3.12 Certain Transactions.  To the best of MBI's knowledge, no Affiliate
of MBI owns or  controls,  directly  or  indirectly  in  whole  or in part,  any
property,  asset or right, tangible or intangible (including but not limited to,
any patent,  trademark,  service mark,  trade name,  brand name,  copyright,  or
pending  application  for any patent,  trademark,  service  mark,  or copyright,
invention,  process,  know-how,  formula,  design  or  trade  secret),  which is
associated  with  any  property,  asset or  right  owned by MBI or which  MBI is
presently operating or using or the use of which is necessary for its business.

        3.13  Absence  of  Changes.  Since the  Balance  Sheet  Date,  except as
disclosed in the 1995 Form 10-K,  the June 30, 1995 Form 10-Q or Appendix  3.13,
MBI has  conducted its  operations in the ordinary  course of business and there
has been no  material  adverse  change  in MBI's  financial  condition,  assets,
business, results of operations or prospects.

        3.14  Restrictions  on  Personnel.  No  officer or  employee  of MBI has
entered into any agreement which is now in effect with any person,  corporation,
partnership or business  organization  other than MBI (a) requiring such officer
or employee to assign any interest in any invention or trade  secrets  developed
while  employed by MBI or (b)  containing  any  prohibition  or  restriction  of
competition or solicitation of customers which if enforced  against such officer
or employee would have a materially  adverse affect on the business or financial
condition of MBI.

        3.15  Disclosure.  Neither this Article 3 (when read in conjunction with
the Appendices to this  Agreement) nor any Appendix to this  Agreement,  nor the
1995 Form 10-K,  June 30, 1995 Form 10-Q or 1995 Proxy  Statement,  contains any
untrue  statement of a material fact or omits to state a material fact necessary
in order to make the statements  contained  herein and therein in the context in
which they were made not misleading.

        3.16 Brokers.  This  Agreement  was not induced or procured  through any
person,  firm or  corporation  acting as a broker or finder  for MBI  except for
Vector Securities  International,  Inc. MBI agrees to hold Mallinckrodt harmless
from any loss,  damage,  cost or expense resulting from any claim by any person,
firm or corporation,  including Vector Securities International, Inc. and Lazard
Freres & Co., based upon any such person,  firm or corporation having acted as a
broker or finder for MBI in connection with the transaction contemplated by this
Agreement.

                                    Article 4

                Conditions Precedent to Purchase of Common Stock

        The obligation of Mallinckrodt to purchase the Common Stock described in
Article 2 is, at the option of Mallinckrodt,  subject to the satisfaction of the
following conditions:

        4.01 Opinion of Counsel.  Mallinckrodt  shall have  received an opinion,
addressed to Mallinckrodt and dated as of the Closing,  from Johnson and Colmar,
counsel for MBI,  satisfactory  in substance  and form to  Mallinckrodt  and its
counsel.

        4.02    Representations   and   Warranties   True   and   Correct.   The
representations  and warranties in Article 3 hereof shall be true and correct as
of the date of  Closing  as if they were  made on and as of the date of  Closing
(with the exception,  in the case of the  representation and warranty in Section
3.09  regarding  MBI's issued and  outstanding  shares of common stock,  for any
changes  since July 17,  1995  resulting  from the  issuance of shares of common
stock  pursuant to (i) the  exercise  of a stock  option  granted  under a Stock
Option  Plan or (ii) the  exercise  of a stock  purchase  warrant  described  in
Appendix  3.09).  Mallinckrodt  shall have received  from MBI's  Chairman of the
Board and Chief  Executive  Officer,  or its Vice  President - Finance and Chief
Financial  Officer or its Vice President - Legal Affairs and General  Counsel an
officer's certificate to the foregoing effect dated as of the Closing.

        4.03 Closing  Certificates.  Mallinckrodt  shall have  received  copies,
certified  by the  Secretary  or an  Assistant  Secretary  of MBI to be true and
correct and in full force and effect,  of (i) the  Certificate of  Incorporation
and  By-Laws  of  MBI;  (ii)  resolutions  of  the  Board  of  Directors  of MBI
authorizing the issuance of the Common Stock, the execution and delivery of this
Agreement and any other documents to be executed by or on behalf of MBI pursuant
to this Agreement;  and (iii) a statement containing the names and titles of the
officer or officers of MBI authorized to sign this Agreement and other documents
required by this Agreement, together with true signatures of such officers.

        4.04 Proceedings Satisfactory to Mallinckrodt.  All proceedings taken in
connection  with  the  transaction   contemplated  by  this  Agreement  and  all
instruments,  authorizations  and other  documents  applicable  thereto shall be
satisfactory in form and content to  Mallinckrodt  and  Mallinckrodt  shall have
received copies of all such documents reasonably required by it.

                                    Article 5

                              Affirmative Covenants

        During the term of this Agreement, MBI covenants that it will:

        5.01  Annual  Audited  Consolidated  Financial  Statements.  Furnish  to
Mallinckrodt  within 90 days after the end of each fiscal year of MBI an audited
consolidated  balance  sheet  of MBI as of the  close  of such  fiscal  year and
related  audited   consolidated   statements  of  operations,   cash  flows  and
shareholders'  equity for such year,  setting forth in each case in  comparative
form  corresponding  figures from the preceding  annual audit, all in reasonable
detail,  prepared in accordance with generally accepted principles of accounting
applied  on a  consistent  basis,  certified  with an  unqualified  opinion by a
nationally  recognized or major regional independent certified public accountant
selected by MBI. The annual audited  financial  statements shall be furnished in
consolidated form for MBI and all Subsidiaries which it may have at the time.

        5.02 SEC Reports. Furnish to Mallinckrodt,  promptly upon filing, copies
as filed with the  Commission  of (i) MBI's  annual  reports on Form 10-K,  (ii)
MBI's  quarterly  reports on Form 10-Q,  (iii) MBI's current reports on Form 8-K
and (iv) all other reports filed pursuant to the Exchange Act.

        5.03 Audit Reports. Furnish to Mallinckrodt,  promptly upon receipt, (i)
copies of all detailed audit reports submitted to MBI by independent accountants
in connection  with each annual audit of the books of MBI and (ii) copies of any
and  all  management  reports  and  recommendations  given  by  its  independent
accountants to MBI if such management reports and  recommendations  relate to or
question the viability of MBI to conduct its business as an on-going  concern or
indicate a material weakness in internal controls.

        5.04 Books and  Records.  Keep proper,  complete  and accurate  books of
record and account and, at Mallinckrodt's  request,  meet with Mallinckrodt from
time to time at a  reasonably  convenient  time and  place for both  parties  to
discuss the financial condition of MBI.

                                    Article 6

                Anti-Dilution Rights and Limitations on Ownership

        6.01  Anti-Dilution  Rights.  If at any  time  MBI  agrees  to sell  MBI
Securities in a private placement or a public offering,  Mallinckrodt shall have
the right, but not the obligation,  to acquire all or any portion of a number of
MBI  Securities  sufficient  for  Mallinckrodt  to  maintain  after the  private
placement  or public  offering  the same  percentage  of ownership of issued and
outstanding shares of MBI common stock that Mallinckrodt  possessed  immediately
prior  to  the  private   placement  or  public   offering  (the   "Pre-Offering
Percentage").  For this purpose:  (i) the issued and  outstanding  shares of MBI
common  stock shall be  determined  assuming  the  conversion  of all issued and
outstanding MBI Securities convertible into shares of MBI common stock; and (ii)
Mallinckrodt's  Pre-Offering Percentage shall be determined solely in respect of
shares of Common  Stock and Other  Common  Stock owned by  Mallinckrodt  and its
Affiliates  and shall  not take into  account  any  Other MBI  Securities  which
Mallinckrodt or an Affiliate of Mallinckrodt may own.

        6.02 Private Placement.  With respect to a private placement,  MBI shall
within five (5) business days after the closing of the private  placement notify
Mallinckrodt  in  writing  of  the  private  placement  and  the  number  of MBI
Securities which  Mallinckrodt is entitled to purchase under Section 6.01 (which
shall be of the  same  character  as the MBI  Securities  which  MBI sold in the
private  placement)  and  provide  Mallinckrodt  with  copies  of  all  relevant
documentation.  Mallinckrodt  shall have twenty (20) business days from the date
of receipt  of MBI's  notice in which to advise  MBI  whether or to what  extent
Mallinckrodt  elects to exercise its rights under Section 6.01. If  Mallinckrodt
does not respond,  or if  Mallinckrodt  indicates  that it will not exercise its
rights,  Mallinckrodt shall be considered  irrevocably to have waived its rights
under Section 6.01 with respect to the private placement. If Mallinckrodt timely
advises MBI that  Mallinckrodt  will  exercise  its rights under  Section  6.01,
Mallinckrodt shall have the right to acquire all or any portion of the number of
MBI Securities which it would be necessary for Mallinckrodt to purchase in order
to  maintain  Mallinckrodt's  Pre-Offering  Percentage,  at a price  per  share,
payable at the closing of Mallinckrodt's  purchase,  equal to the average (mean)
of the closing  price of MBI common stock on the New York Stock  Exchange on the
five most  recent  trading  days  preceding  the date of closing of the  private
placement (or if the MBI Securities  which  Mallinckrodt is entitled to purchase
are not  shares of MBI  common  stock,  at the price  specified  in the  private
placement  agreement  entered  into between MBI and the  purchaser).  Closing of
Mallinckrodt's  purchase shall take place at MBI's principal office,  unless MBI
and Mallinckrodt agree on a different  location,  at a mutually  convenient date
and time as soon as practicable after Mallinckrodt advises MBI that Mallinckrodt
will exercise its rights under Section  6.01. At closing,  Mallinckrodt  and MBI
shall provide customary and appropriate representations to one another regarding
the  purchase and sale of the MBI  Securities  being  purchased by  Mallinckrodt
(with MBI making substantially the same representations to Mallinckrodt that MBI
made to the  purchaser or purchasers  in the private  placement)  and shall also
provide any  additional  documentation  reasonably  requested by the other party
(for example, an appropriate opinion of counsel).

        6.03 Public  Offering.  If at any time MBI  proposes to register any MBI
Securities  under the Securities Act in connection with a public  offering,  MBI
shall notify  Mallinckrodt  no later than five (5)  business  days after MBI has
determined to do so, and shall provide Mallinckrodt with a copy of any letter of
intent.  Mallinckrodt  shall have  twenty  (20)  business  days from the date of
receipt of MBI's  notice in which to advise MBI whether  Mallinckrodt  elects to
exercise its rights under Section 6.01. If  Mallinckrodt  does not respond or if
Mallinckrodt indicates that it will not exercise its rights,  Mallinckrodt shall
be  considered  irrevocably  to have waived its rights  under  Section 6.01 with
respect  to the  public  offering.  If  Mallinckrodt  timely  advises  MBI  that
Mallinckrodt  desires to retain its rights  under  Section  6.01,  then when MBI
files a  registration  statement  containing a preliminary  prospectus  with the
Commission,  MBI shall  provide  Mallinckrodt  with  copies  of the  preliminary
prospectus and all subsequent  amendments.  Mallinckrodt  shall have twenty (20)
business  days  from  its  receipt  of the  preliminary  prospectus  in which to
exercise its rights under Section 6.01(b) by making an offer, based on the price
and the other terms  contained  in the final  prospectus,  to acquire all or any
portion of the MBI  Securities  to be offered  in the public  offering  which it
would  be  necessary  for   Mallinckrodt   to  purchase  in  order  to  maintain
Mallinckrodt's  Pre-Offering Percentage.  No such offer to buy shall be accepted
prior to the  time  that  the  registration  statement  becomes  effective.  The
registration statement shall indicate that Mallinckrodt has anti-dilution rights
to purchase MBI Securities on the terms offered to the public.

        6.04 Stock Options. With respect to the issuance of shares of MBI common
stock  pursuant to the exercise of stock  options  granted  under a Stock Option
Plan,  or  under  any  other  stock  option  plan or any  stock-based  incentive
compensation plan that MBI may adopt in the future,  Mallinckrodt shall have the
right,  in respect of each  fiscal  year of MBI  beginning  with its fiscal year
ending March 31, 1996,  to purchase from MBI all or any portion of the number of
shares of MBI common  stock  which it would be  necessary  for  Mallinckrodt  to
purchase in order to maintain  the same  percentage  of  ownership of issued and
outstanding  shares of MBI common  stock that  Mallinckrodt  possessed as of the
last day of that fiscal year without regard to shares of MBI common stock issued
pursuant  to the  exercise of stock  options  during that fiscal year (or in the
case of  MBI's  fiscal  year  ending  March  31,  1996,  after  the date of this
Agreement).  For this  purpose:  (i) the  issued and  outstanding  shares of MBI
common  stock  as of the  last  day of MBI's  fiscal  year  shall be  determined
assuming the conversion of all issued and outstanding MBI Securities convertible
into shares of MBI common stock; and (ii) Mallinckrodt's percentage of ownership
shall be determined solely in respect of shares of Common Stock and Other Common
Stock owned by  Mallinckrodt  and its Affiliates and shall not take into account
any Other MBI Securities which  Mallinckrodt or an Affiliate of Mallinckrodt may
own. MBI shall notify  Mallinckrodt no later than 20 business days after the end
of each fiscal year of MBI of the shares of MBI common stock which  Mallinckrodt
is entitled to purchase  under this Section 6.04 in respect of that fiscal year.
Mallinckrodt  shall have twenty (20)  business  days from the date of receipt of
MBI's  notice in which to advise  MBI  whether  or to what  extent  Mallinckrodt
elects to exercise its rights under this Section 6.04. If Mallinckrodt  does not
respond,  or if  Mallinckrodt  indicates  that it will not  exercise its rights,
Mallinckrodt  shall be  considered  irrevocably  to have waived its rights under
this Section 6.04 with respect to the fiscal year in question.  If  Mallinckrodt
timely  advises MBI that  Mallinckrodt  will  exercise its rights,  Mallinckrodt
shall  have the right to acquire  all or any  portion of the number of shares of
MBI common  stock which it is entitled to purchase at a price per share equal to
the market price on the date Mallinckrodt  advises MBI that it will exercise its
rights.  Closing shall be as soon as practicable after Mallinckrodt  advises MBI
that  it  will  exercise  its  rights  under  this  Section  6.04.  At  closing,
Mallinckrodt and MBI shall provide customary and appropriate  representations to
one  another  regarding  the  purchase  and sale of the MBI common  stock  being
purchased by  Mallinckrodt  and shall also provide any additional  documentation
reasonably  requested by the other party (for example, an appropriate opinion of
counsel)

        6.05  Limitations.  Notwithstanding  the  preceding  provisions  of this
Article 6, the number of MBI  Securities  or shares of MBI  common  stock  which
Mallinckrodt shall be entitled to purchase under Sections 6.01 and 6.04 shall be
a whole number  (obtained  by rounding up any fraction  equal to or greater than
one-half and rounding down any fraction less than  one-half),  and  Mallinckrodt
may exercise its rights under  Sections 6.01 and 6.04 only in respect of a whole
number  of MBI  Securities  or  shares  of MBI  common  stock.  MBI shall not be
required to transfer any MBI Securities to Mallinckrodt  under this Article 6 if
to do so  would  result  in  the  violation  of  any  applicable  law,  rule  or
regulation.  Mallinckrodt's  rights under Sections 6.01 and 6.04 shall terminate
if and when Mallinckrodt and Affiliates of Mallinckrodt at any time cease to own
in the  aggregate  at least 70% of the  largest  number of shares of MBI  common
stock and other MBI securities which, at any preceding time,  constituted shares
of Common Stock and Other Common Stock. Mallinckrodt's rights under Section 6.01
shall also terminate if and when, on each of any two consecutive occasions after
the  fourth  anniversary  of the date of this  Agreement  that  Mallinckrodt  is
entitled  to exercise  its rights  under  Section  6.01,  Mallinckrodt  fails to
purchase at least 50% of the MBI  Securities  which it is entitled to  purchase.
Mallinckrodt's  rights under  Section 6.04 shall also  terminate if and when, in
respect of each of any two consecutive fiscal years of MBI beginning on or after
April 1, 1999,  Mallinckrodt fails to purchase at least 50% of the shares of MBI
common  stock  which it is entitled to purchase  under  Section  6.04.  Any such
termination  of  Mallinckrodt's  rights  under  Sections  6.01 or 6.04 shall not
require notice or other action by MBI.

        6.06 Limitations on  Mallinckrodt's  Ownership.  During the term of this
Agreement  neither  Mallinckrodt  nor any of its  Affiliates  shall  directly or
indirectly  acquire any Other MBI Securities  (except by way of stock dividends,
stock splits, or similar events affecting  holders of MBI Securities  generally)
if the effect of the acquisition would be to increase the aggregate voting power
in the election of directors of all MBI Securities owned by Mallinckrodt and its
Affiliates to more than fifteen percent (15%) of the total combined voting power
of all MBI Securities then outstanding. Notwithstanding this limitation:

              (a) Mallinckrodt  or any of its  Affiliates  may acquire Other MBI
Securities if any of the following events occur:

                     (1) A tender or exchange offer is made by any Person or 13D
              Group (other than Mallinckrodt, an Affiliate of Mallinckrodt or an
              Affiliate of or Person acting in concert with  Mallinckrodt  or an
              Affiliate of Mallinckrodt) to acquire MBI Securities such that, if
              added to the MBI  Securities  already  owned by that Person or 13D
              Group,  would  represent  more than fifteen  percent  (15%) of the
              total  combined  voting  power of all MBI  Securities  issued  and
              outstanding; or

                     (2) There is public  disclosure or  Mallinckrodt  otherwise
              learns that MBI Securities  representing more than fifteen percent
              (15%) of the total  combined  voting  power of all MBI  Securities
              issued and  outstanding  have been  acquired or are proposed to be
              acquired by any Person or 13D Group; or

                     (3) Any  Person or 13D  Group  shall  beneficially  own MBI
              Securities  representing  more than fifteen  percent  (15%) of the
              total  combined  voting  power of all issued and  outstanding  MBI
              Securities.

              (b)  Neither  Mallinckrodt  nor  any of its  Affiliates  shall  be
        required to dispose of any shares of MBI  Securities if their  aggregate
        percentage ownership is increased as a result of MBI's  recapitalization
        or any other action taken by MBI.

As used herein, "13D Group" means any group of Persons formed for the purpose of
acquiring,  holding,  voting or disposing of  securities  that would be required
under Section  13(d) of the Exchange Act and the related  rules and  regulations
(as now in  effect,  and  based  on  present  legal  interpretations)  to file a
statement on Schedule 13D or 13G with the  Commission  as a "person"  within the
meaning of Section 13(d)(3) of the Exchange Act if the group  beneficially owned
common stock  representing  more than five  percent  (5%) of the total  combined
voting power of all MBI Securities then issued and outstanding.

        6.07 Receipt of Offer To Acquire Control.  In the event that MBI's board
of  directors  receives  an offer from a third  party to acquire  control of MBI
through the  acquisition  of voting MBI  Securities,  or in the event that MBI's
chief executive  officer or chief operating officer receives such an offer which
he intends to present to MBI's board, MBI shall promptly notify  Mallinckrodt of
the offer and disclose to  Mallinckrodt  all  material  details  concerning  the
offer.  To the extent  that  neither the third party nor MBI has made any public
disclosure  regarding the third party's offer or its terms,  Mallinckrodt  shall
treat all information about the offer that it receives from MBI as confidential.
If the  third  party has not set a  deadline  for  MBI's  response  to the third
party's offer, MBI shall permit  Mallinckrodt a reasonable  period of time under
the  circumstances  (but not more than 10 business days) in which to present MBI
with a  competitive  offer.  If the  third  party has set a  deadline  for MBI's
response, MBI may set a deadline for Mallinckrodt's response no earlier than (i)
48 hours prior to the deadline for MBI's  response if MBI's deadline is at least
10  business  days from the date of MBI's  notice to  Mallinckrodt  of the third
party's offer or (ii) 24 hours prior to the deadline for MBI's response if MBI's
deadline is less than 10 days from the date of MBI's notice to  Mallinckrodt  of
the third party's offer.  Mallinckrodt's offer to MBI in no event shall be for a
lesser  amount of voting MBI  Securities  or for a lower  value than that of the
third party's offer.

                                    Article 7

                             Rights of First Refusal

        7.01  General   Limitation   on  Transfer.   Except  for  (i)  sales  by
Mallinckrodt  and its Affiliates  under the  Commission's  Rule 144 which do not
exceed  25,000  shares  in the  aggregate  during  any  90-day  period  and (ii)
transfers to an Affiliate of Mallinckrodt pursuant to Section 7.06, Mallinckrodt
shall not  directly or  indirectly  offer for sale or transfer  any  Registrable
Shares without offering MBI a right of first refusal as provided in this Article
7. Mallinckrodt and its Affiliates may sell Registrable Shares under Rule 144 in
excess of 25,000-share limit on aggregate sales during any 90-day period if (and
only if) MBI does not  exercise  its right of first  refusal  in  respect of the
shares in excess of the limit.

        7.02  Transfer  Notice.  Mallinckrodt  shall give MBI written  notice of
Mallinckrodt's  intention to sell  Registrable  Shares (the "Transfer  Notice"),
specifying the number of Registrable  Shares  proposed to be sold or transferred
and whether the shares are to be sold under Rule 144, in a privately  negotiated
sale or in connection with a tender or exchange offer pursuant to Regulation 14D
of the Exchange Act. For this purpose,  Mallinckrodt's  request for registration
pursuant  to  Sections  8.01 or 8.02 shall be  considered  a Transfer  Notice in
respect of all of the Registrable  Shares that  Mallinckrodt has requested to be
registered.  If the shares are to be sold in a privately  negotiated  sale,  the
Transfer Notice shall also specify the proposed  purchaser or transferee and the
proposed price. The proposed price of a bona fide third party tender or exchange
offer pursuant to Regulation 14D shall be considered the cash price offered,  in
the case of a cash  offer,  or the cash  price  plus  the  value of the  offered
securities,  in the case of a partial cash and exchange  offer,  or the value of
the offered  securities in an exchange  offer,  without regard to any provisions
with respect to proration  or any  conditions  to the  offeror's  obligation  to
purchase.  If the  Transfer  Notice is in respect  of  Registrable  Shares  that
Mallinckrodt  has requested to be registered  pursuant to Sections 8.01 or 8.02,
the proposed  price shares shall be considered  (i) the price at which shares of
MBI common stock are sold to the underwriters  (net of  underwriters'  discounts
and  commissions),  in the  case  of a  Transfer  Notice  in  connection  with a
registration for an underwritten  public offering,  or (ii) the closing price of
MBI  common  stock on the New  York  Stock  Exchange  on the  last  trading  day
preceding the day that the registration  statement is declared  effective by the
Commission,  in the case of a Transfer  Notice in connection with a registration
which is not for an underwritten public offering.

        7.03 Exercise by MBI.  Except as qualified  under  Sections  7.04(b) and
7.05(a), MBI shall have fifteen (15) business days from the date of the Transfer
Notice (or sixty (60) days from the date of the Transfer  Notice if the Transfer
Notice discloses that Mallinckrodt  intends to sell or transfer more than 50% of
its  aggregate  Registrable  Shares)  in which to  exercise  its  right of first
refusal, by written notice to Mallinckrodt,  with respect to all (or in the case
of (i) a sale in the open market  pursuant to Rule 144 or (ii) a Transfer Notice
in  respect  of  Registrable  Shares  that  Mallinckrodt  has  requested  to  be
registered  pursuant  to  Sections  8.01  or  8.02,  all  or a  portion)  of the
Registrable Shares specified in the Transfer Notice. (In the case of a tender or
exchange  offer  pursuant to Regulation  14D,  however,  MBI shall have until no
later than 48 hours prior to the latest time by which Registrable Shares must be
tendered in order to be accepted or to qualify for any proration).  The purchase
price shall be the proposed price specified in Section 7.02 and shall be paid in
cash.

        7.04 Valuation.  Except where property or securities offered in exchange
for  Registrable  Shares has a readily  ascertainable  fair  market  value,  the
following  procedures  shall be followed with respect to a Transfer Notice which
includes any property other than cash:

              (a) The  value of the  offered  securities  or  property  shall be
        determined  by MBI and  Mallinckrodt  jointly,  or if they are unable to
        agree,  the  determination  shall be made by a nationally  or regionally
        recognized  investment  banking or consulting  firm selected by two such
        firms respectively chosen by MBI and Mallinckrodt, and its determination
        shall be conclusive.  MBI and Mallinckrodt  shall use their best efforts
        to cause this  determination  to be made no later than fifteen (15) days
        after the date of the Transfer Notice,  and MBI and  Mallinckrodt  shall
        each pay one-half of fees of the firm making the determination; and

              (b) The  period  in  which  MBI may  exercise  its  right of first
        refusal  shall be extended to the date five (5) business  days after the
        date that the value of the offered  securities or property is determined
        as provided in subparagraph (a).

        7.05  Closing.

              (a) If MBI  exercises its right of first  refusal,  the closing of
        its  purchase of the  Registrable  Shares  with  respect to which it has
        exercised its right of first refusal shall take place within thirty (30)
        calendar days after the date that MBI gives notice of its  exercise,  or
        within  10 days  after  the  price is  determined  (in the case of MBI's
        exercise of its right of first refusal in respect of Registrable  Shares
        that  Mallinckrodt  has requested to be registered  pursuant to Sections
        8.01 or  8.02),  or  within  twenty  (20)  calendar  days  after MBI has
        obtained any  necessary  government  approval or  nonobjection,  if any,
        whichever  is  later.  MBI  shall  make  application  for any  necessary
        governmental  approval as soon as practicable after exercising its right
        of first refusal; and

              (b) If MBI does not timely  exercise its right of first refusal in
        respect  of  shares  to be sold  in a  privately  negotiated  sale or in
        connection with a tender or exchange offer,  Mallinckrodt  shall be free
        during the ninety (90) days  following the  expiration of MBI's right of
        first refusal to sell the Registrable  Shares  specified in the Transfer
        Notice to the proposed purchaser or transferee  identified in the notice
        at the price  specified  in the notice or at any  greater  price.  MBI's
        right  of  first   refusal  shall  survive  with  respect  to  any  such
        Registrable  Shares that are not sold by  Mallinckrodt  to the  proposed
        purchaser  or  transferee  during  this 90-day  period.  If MBI does not
        timely  exercise  its right of first  refusal  in  respect of all of the
        Registrable Shares to be sold under Rule 144, Mallinckrodt shall be free
        to sell the remaining shares specified in its Transfer Notice under Rule
        144 at any  time  following  the  expiration  of  MBI's  right  of first
        refusal.  If MBI does not timely  exercise its right of first refusal in
        respect of all of the Registrable Shares that Mallinckrodt has requested
        to be registered in accordance with Sections 8.01 or 8.02, the remaining
        shares shall be subject to registration in accordance with Article 8.

        7.06 Survival.  MBI's right of first refusal  granted under Section 7.01
shall survive the term of this Agreement.

        7.07  Transfers  to  Affiliates.  Mallinckrodt  may  transfer all or any
shares of Common Stock or Other Common Stock to an Affiliate of Mallinckrodt if,
prior to the  transfer,  (i) the  Affiliate  provides  MBI with the  Affiliate's
written  acknowledgement  that it  will be  bound  by the  restrictions  in this
Article 7 as if it were Mallinckrodt and (ii) Mallinckrodt  provides MBI with an
opinion of counsel,  satisfactory  to MBI in its reasonable  discretion,  to the
effect that the shares may be transferred to the Affiliate without  registration
under the Securities Act or the securities laws of any state.

                                    Article 8

                               Registration Rights

        8.01  Piggy-back  Registration.  If at any time MBI proposes to register
any of its common stock under the Securities  Act in connection  with the public
offering of such securities on a form that would also permit the registration of
the  Registrable  Shares,  MBI shall,  at such time,  promptly  give the Holders
written  notice of such  determination.  Upon the written  request of any Holder
given  within 20 business  days after  receipt of any such notice by the Holder,
MBI shall use its best efforts  (subject to MBI's right to decide for any reason
not to proceed with the public offering and MBI's exercise of its right of first
refusal under Section 7.01) to cause to be registered  under the  Securities Act
all of the Registrable Shares that each such Holder has requested be registered.

        If the registration of which MBI gives notice is for a registered public
offering  involving an  underwriting,  then MBI shall so advise the Holders as a
part of  such  written  notice.  In such  event,  the  right  of any  Holder  to
registration  pursuant  to this  Section  8.01  shall be  conditioned  upon such
Holder's  agreeing to participate in such underwriting and the inclusion of such
Holder's  Registrable  Shares in the underwriting to the extent provided herein.
All Holders  proposing to distribute their securities  through such underwriting
shall  (together with MBI and the other holders  distributing  their  securities
through such  underwriting)  enter into an  underwriting  agreement in customary
form, and upon the terms agreed upon between MBI and the  underwriter,  with the
underwriter  selected for such  underwriting by MBI.  Notwithstanding  any other
provision of this Section 8.01, if the  underwriter  reasonably  determines that
inclusion of such shares will  jeopardize the success of the offering,  then the
underwriter  may exclude some or all Registrable  Shares from such  registration
and  underwriting  in accordance  with the  provisions of this Section 8.01. MBI
shall so advise all Holders and the other holders  distributing their securities
through  such  underwriting,  and the  number of  Registrable  Shares  and other
securities that may be included in the registration  and  underwriting  shall be
allocated  among  the  Holders  and  the  other  holders   (excluding  MBI),  in
proportion,  as nearly as practicable,  to the respective  amounts of securities
proposed  for  inclusion  in such  registration  by each such  Holder  and other
holders at the time of filing the Registration Statement;  provided, however, in
no event shall the number of  Registrable  Shares  included  in the  offering be
reduced below 25% of the aggregate number of Registrable Shares that all Holders
request  MBI to  include  in  the  offering.  If  any  Holder  or  other  holder
disapproves of the terms of any such underwriting, then he may elect to withdraw
therefrom by written notice to MBI and the underwriter.  Any securities excluded
or withdrawn from such underwriting  shall be withdrawn from such  registration.
Subject to the foregoing, MBI and the underwriter selected by MBI shall make all
determinations with respect to the timing, pricing and other matters relating to
the offering.

        8.02  Demand Registration.

              (a) At any time after the fourth  anniversary  of the date of this
        Agreement, Holders of Registrable Shares shall have the right to request
        MBI to use its best  efforts to effect a  registration  of the  Holders'
        Registrable  Shares under the  Securities Act on the  Commission's  Form
        S-3,  subject  to the  following  limitations  and  conditions  and  the
        limitation in Section 8.02(c):

                     (1) Each request for  registration  shall be in writing and
              shall specify the number and character of the  Registrable  Shares
              requested to be registered and the intended  method of disposition
              of those shares.

                     (2)   MBI shall not be  required to effect more than three
              registrations under this Section 8.02.

                     (3) MBI shall  not be  required  to  effect a  registration
              pursuant to this  Section  8.02  unless the number of  Registrable
              Shares requested to be registered (taking into account Registrable
              Shares  requested to be registered  following  MBI's notice to all
              Holders in accordance  with Section  8.02(b))  constitute at least
              10% of the outstanding Registrable Shares.

                     (4) MBI shall  not be  required  to  effect a  registration
              pursuant to this Section 8.02 within 180 days after the  effective
              date of the last registration pursuant to this Section 8.02.

                     (5) MBI shall not be required to effect a registration  for
              the period (not exceeding 120 days)  specified in the  certificate
              signed by the  president of MBI and  delivered  to the  requesting
              Holder or Holders  stating  that,  in the good faith  judgment  of
              MBI's Board of Directors,  it would be  detrimental to MBI and its
              shareholders for a registration statement to be filed prior to the
              expiration  of the  specified  period.  MBI may not exercise  this
              deferral  right more  frequently  than once  during  any  12-month
              period.

              If for any reason MBI cannot qualify for registration on Form S-3,
              MBI shall effect the registration on Form S-1 or other appropriate
              form,  in which  case  this  Section  8.02(a)  shall  apply in all
              respects as if the term "Form S-3" were replaced by the term "Form
              S-1" or the designation of the other form.

              (b) MBI shall give  written  notice to all Holders of  Registrable
        Shares of the receipt of a request for registration  pursuant to Section
        8.02(a) and shall provide a reasonable opportunity for all other Holders
        to participate in the registration.

              (c) The sale or other disposition of Registrable Shares registered
        under this Section 8.02 shall be subject to the  limitation  that during
        each  calendar  month  beginning  with the  calendar  month in which the
        registration  statement  covering those  Registrable  Shares is declared
        effective  by the  Commission,  each  Holder  may not sell or  otherwise
        dispose of more than  one-twelfth  (1/12) of the  Holder's  Registrables
        Shares which were covered by that registration statement.

        8.03 Obligations of MBI.  Whenever  required under Sections 8.01 or 8.02
that MBI use its best  efforts to effect  the  registration  of any  Registrable
Shares, MBI shall, as expeditiously as possible:

              (a) Prepare and file with the Commission a Registration  Statement
        with  respect to such  Registrable  Shares  and use its best  efforts to
        cause such Registration Statement to become and remain effective;

              (b)  Prepare  and file with the  Commission  such  amendments  and
        supplements to such  Registration  Statement and the prospectus  used in
        connection  with such  Registration  Statement  as may be  necessary  to
        comply with the  provisions  of the  Securities  Act with respect to the
        disposition of all securities covered by such Registration Statement;

              (c) Furnish to the Holders such numbers of copies of a prospectus,
        including a preliminary prospectus,  in conformity with the requirements
        of the Securities  Act, and such other  documents as they may reasonably
        request in order to facilitate the  disposition  of  Registrable  Shares
        owned by them;

              (d) Use its best  efforts to register  and qualify the  securities
        covered by such  Registration  Statement under such other  securities or
        Blue Sky laws of such  jurisdictions as shall be reasonably  appropriate
        for the  distribution  of the  securities  covered  by the  Registration
        Statement,  provided  that  MBI  shall  not be  required  in  connection
        herewith or as a condition  thereto to qualify to do business or to file
        a  general  consent  to  service  of  process  in  any  such  states  or
        jurisdictions.  The Holders  shall pay all of the expenses of qualifying
        in   jurisdictions   where  MBI's   underwriters   have  not   requested
        qualification; and

              (e)  Furnish,  at the request of the Holders on the date that such
        Registrable  Shares are delivered to the  underwriters for sale pursuant
        to such  registration or, if such Registrable  Shares are not being sold
        through  underwriters,  on the  date  the  Registration  Statement  with
        respect to such  Registrable  Shares becomes  effective (i) an a opinion
        dated  such  date,  of  independent  counsel  representing  MBI  for the
        purposes of such  registration,  addressed to the underwriters,  if any,
        and to the Holders stating that such  Registration  Statement has become
        effective under the Securities Act and covering  substantially  the same
        matters with respect to the  Registration  Statement (and the prospectus
        included  therein)  as are  customarily  covered  (at  the  time of such
        registration)  in  the  opinions  of  issuer's   counsel   delivered  to
        underwriters  in  connection  with  underwritten   public  offerings  of
        securities;  and (ii) a letter  dated  such  date  from the  independent
        certified public accountant of MBI,  addressed to the  underwriters,  if
        any, and the Holders, stating that they are independent certified public
        accountants  within the meaning of the  Securities  Act and that, in the
        opinion  of  such  accountants,   the  financial  statements  and  other
        financial  data of MBI  included in the  Registration  Statement  or the
        prospectus, or any amendment or supplement thereto, comply as to form in
        all material respects with the applicable accounting requirements of the
        Securities  Act. Such opinion of counsel shall  additionally  cover such
        other legal matters with respect to the registration in respect of which
        such opinion is being given as the Holders may reasonably request.  Such
        letter  from  the  independent   certified  public   accountants   shall
        additionally cover such other financial matters  (including  information
        as to the period  ending not more than five  business  days prior to the
        day of such letter) with respect to the registration in respect of which
        such letter is being given as the Holders may reasonably request.

        8.04 Holders' Obligation to Furnish Information. It shall be a condition
precedent to the obligation of MBI to take any action pursuant to this Article 8
that the Holders  shall  furnish to MBI such  information  regarding  them,  the
Registrable  Shares held by them and the intended  method of disposition of such
securities  as  MBI  shall  reasonably  request  and as  shall  be  required  in
connection with the action to be taken by MBI.

        8.05 Expenses of Registration.  All expenses incurred in connection with
all registrations  pursuant to Section 8.01 (excluding  underwriters'  discounts
and  commissions),   including,   without   limitation,   all  registration  and
qualification fees, printers' and accounting fees, and fees and disbursements of
counsel for MBI shall be borne by MBI. All expenses  incurred in connection with
all registrations pursuant to Section 8.02, including,  without limitation,  all
registration  and  qualification  fees,   printers'  and  accounting  fees,  and
reasonable  fees and  disbursements  of  counsel  for MBI  shall be borne by the
Holders whose Registrable Shares are included in the registration (in proportion
to such shares).

        8.06  Indemnification. In the event any Registrable Shares are included
in a Registration Statement under this Article 8:

              (a) To the extent  permitted by law, MBI shall  indemnify and hold
        harmless each Holder  requesting or joining in a registration,  and each
        person,  if any,  who  controls  such  Holder  within the meaning of the
        Securities  Act,  against any losses,  claims,  damages or  liabilities,
        joint or  several,  (including  reasonable  counsel  fees) to which such
        person may become  subject under the  Securities  Act, the Exchange Act,
        state  securities  laws, or otherwise,  insofar as such losses,  claims,
        damages or liabilities  (or actions in respect  thereof) arise out of or
        are based on any untrue or alleged untrue statement of any material fact
        contained in such  Registration  Statement,  including  any  preliminary
        prospectus or final  prospectus  contained  therein or any amendments or
        supplements  thereto,  or arise out of or are based upon the omission or
        alleged  omission to state therein a material fact required to be stated
        therein or necessary to make the statements  therein not misleading,  or
        arise out of any violation by MBI of any rule or regulation  promulgated
        under the Securities Act applicable to MBI and relating to any action or
        inaction required of MBI in connection with any such  registration;  and
        MBI will reimburse each such Holder or controlling  person for any legal
        or  other  expenses  reasonably  incurred  by  them in  connection  with
        investigating or defending any such loss,  claim,  damage,  liability or
        action;  provided,  however,  that the indemnity  agreement contained in
        this  Section  8.06  shall not apply to any such  loss,  claim,  damage,
        liability or action to the extent that it arises out of or is based upon
        an untrue  statement or alleged untrue  statement or omission or alleged
        omission  made  in   connection   with  such   Registration   Statement,
        preliminary prospectus,  final prospectus,  or amendments or supplements
        thereto,  in reliance  upon and in conformity  with written  information
        furnished  expressly for use in connection with such registration by any
        such Holder or controlling person;

              (b) To the extent  permitted  by law,  each Holder  requesting  or
        joining in a registration  will indemnify and hold harmless MBI, each of
        its  directors,  each of its officers  who have signed the  Registration
        Statement,  each person,  if any, who controls MBI within the meaning of
        the Securities  Act, and each agent and any  underwriter for MBI (within
        the meaning of the Securities Act) against any losses,  claims,  damages
        or liabilities  (including reasonable counsel fees), to which MBI or any
        such director,  officer,  controlling person,  agent, or underwriter may
        become  subject  under the  Securities  Act,  the  Exchange  Act,  state
        securities laws or otherwise, insofar as such losses, claims, damages or
        liabilities (or actions in respect thereto) arise from or are based upon
        any untrue  statement or alleged  untrue  statement of any material fact
        contained in such  Registration  Statement,  including  any  preliminary
        prospectus  or final  prospectus  contained  therein or any amendment or
        supplement  thereto,  or arise out of or are based upon the  omission or
        alleged  omission to state therein a material fact required to be stated
        therein or necessary to make the statements  therein not misleading,  in
        each  case to the  extent,  but only to the  extent,  that  such  untrue
        statement or alleged  untrue  statement or omission or alleged  omission
        was  made  in  such   Registration   Statement,   preliminary  or  final
        prospectus, or any amendment or supplement thereto, in reliance upon and
        in  conformity  with  written  information   furnished  by  such  Holder
        expressly for use in connection  with such  registration;  and each such
        Holder will reimburse any legal or other expenses reasonably incurred by
        MBI or  any  such  director,  officer,  controlling  person,  agent,  or
        underwriter in connection with investigating or defending any such loss,
        claim, damage, liability or action; and

              (c)  Promptly  after  receipt by an  indemnified  party under this
        Section  8.06  of  notice  of  the  commencement  of  any  action,  such
        indemnified  party  will,  if a claim in  respect  thereof is to be made
        against any  indemnifying  party  under this  Section  8.06,  notify the
        indemnifying  party in  writing  of the  commencement  thereof,  and the
        indemnifying  party shall have the right to participate  in, and, to the
        extent  the  indemnifying  party so  desires,  jointly  with  any  other
        indemnifying party similarly noticed, to assume the defense thereof with
        counsel mutually  satisfactory to the parties.  The failure to notify an
        indemnifying  party  promptly  of the  commencement  of any  action,  if
        prejudicial  to his ability to defend such  action,  shall  relieve such
        indemnifying  party of any liability to the indemnified party under this
        Section 8.06, but the omission so to notify the indemnifying  party will
        not relieve  him of any  liability  that he may have to any  indemnified
        party otherwise than under this Section 8.06.

        8.07 Reports Under Exchange Act. With a view to making  available to the
Holders the benefits of Rule 144  promulgated  under the  Securities Act and any
other rule or regulation of the Commission  that may at any time permit a Holder
to sell securities of MBI to the public without registration,  MBI agrees to use
its best efforts to:

              (a) File with the  Commission  in a timely  manner all reports and
        other  documents  required  of MBI  under  the  Securities  Act  and the
        Exchange Act; and

              (b)  Furnish  to any  Holder  so  long  as such  Holder  owns  any
        Registrable  Shares upon request at any time a written  statement by MBI
        that it has complied with the reporting  requirements of Rule 144 and of
        the  Securities  Act and the  Exchange  Act,  a copy of the most  recent
        annual or  quarterly  report of MBI on Form 10-K or Form 10-Q,  and such
        other  reports  and  documents  so  filed  by MBI  as may be  reasonably
        requested  availing  any  Holder  of  any  rule  or  regulation  of  the
        Commission  permitting  the  selling  of  any  such  securities  without
        registration.

        8.08  Certain   Limitations   in   Connection   with  Future  Grants  of
Registration Rights; Priority with Other Shares Entitled to Registration Rights.
MBI shall not enter into any agreement with any holder or prospective  holder of
any securities of MBI providing for the granting to such holder of  registration
rights unless such agreement  includes a provision that, in the case of a public
offering involving an underwritten registered offering,  protects the Holders if
marketing  factors  require  a  limitation  on the  number of  securities  to be
included in the  underwriting  in the manner in which the Holders are  protected
under Section 8.01.

                                    Article 9

                         Representations of Mallinckrodt

        To  induce  MBI to  sell  the  Common  Stock  described  in  Article  2,
Mallinckrodt represents and warrants to MBI as follows:

        9.01 Investment Purpose.  Mallinckrodt is acquiring the shares of Common
Stock issued  pursuant to this Agreement for purposes of investment and not with
a view to the sale or other  distribution  thereof as such terms are  defined in
the  Securities  Act,  as  amended,   and  the  regulations  of  the  Commission
promulgated thereunder. Mallinckrodt acknowledges that (i) these shares have not
been registered under the Securities Act, as amended,  or the securities laws of
any state and that (ii) the  transfer  of any of these  shares is subject to the
restrictions and limitations of this Agreement.

        9.02  Authorization  and Binding  Effect.  The execution and delivery of
this Agreement and the performance by Mallinckrodt of its obligations  hereunder
are within  Mallinckrodt's  corporate power, have been duly authorized by proper
corporate  action on the part of  Mallinckrodt,  are not in violation  of, or in
default under, any existing law, rule or regulation of any  governmental  agency
or  authority,   any  order  or  decision  of  any  court,  the  Certificate  of
Incorporation  or  By-Laws  of  Mallinckrodt  or the  terms  of  any  agreement,
restriction or undertaking  to which  Mallinckrodt  is a party or by which it is
bound,  and  except  for  the  notification  required  by the  Hart-Scott-Rodino
Antitrust  Improvements Act of 1976, as amended,  do not require the approval or
consent of or notice to the shareholders of Mallinckrodt, any governmental body,
agency or authority or any other person or entity.

        9.03 Brokers.  This  Agreement  was not induced or procured  through any
person,  firm or  corporation  acting as a broker or  finder  for  Mallinckrodt.
Mallinckrodt  agrees to hold MBI harmless from any loss, damage, cost or expense
resulting from any claim by any person,  firm or corporation based upon any such
person,  firm or corporation having acted as a broker or finder for Mallinckrodt
or any other Person in  connection  with the  transaction  contemplated  by this
Agreement.

                                   Article 10

                                  Miscellaneous

      10.01 Survival of Representations  and Warranties.  MBI's  representations
and  warranties  contained in Article 3 hereof  shall  survive the Closing for a
period  of  2  years  from  the  date  of  Closing,  provided,   however,  MBI's
representations and warranties contained in Sections 3.02 and 3.09 shall survive
indefinitely.

      10.02   Amendment of 1988 Investment Agreement. The 1988 Investment
Agreement is amended as  ollows, effective as of Closing:

              (a) Sections 1.08 ("Common Stock"),  1.13 ("Holder" or "Holders")
      and 1.19 ("Registrable  Shares") of the 1988 Investment Agreement are
      amended to read the same as Sections 1.08.  1.11 and 1.20,  respectively,
      of this Agreement;

              (b)   Provisions   reading  the  same  as   Sections   1.14  ("MBI
      Securities"),   1.17   ("Other   Common   Stock")  and  1.18  ("Other  MBI
      Securities") of this Agreement are added to the 1988 Investment  Agreement
      as Sections 1.26, 1.27 and 1.28, respectively;

              (c) Articles 5 ("Affirmative Covenants"), 6 ("Anti-Dilution Rights
      and  Limitations  on  Ownership"),  7 ("Rights  of First  Refusal")  and 8
      ("Registration  Rights") of the 1988  Investment  Agreement are amended to
      read the same as Articles 5, 6, 7 and 8,  respectively,  of this Agreement
      (with the exception that the reference to the 1988 Investment Agreement in
      Section  6.06 of this  Agreement  shall be  considered a reference to this
      Agreement); and

              (d) A provision reading the same as Section 10.11 ("Term")of this
      Agreement is added to the 1988 Investment Agreement as Section 10.12.

      10.03 Assignment.  This Agreement shall be assignable by either party only
with the written consent of the other party, except that either party may assign
this Agreement,  without such consent, to the purchaser of all its assets, or of
all the assets of its business to which the Distribution  Agreement relates, and
Mallinckrodt  may assign this Agreement or its rights hereunder to any Affiliate
of Mallinckrodt.

      10.04 Notice. All notices,  communications,  demands and payments required
or permitted to be given or made  hereunder or pursuant  hereto shall be sent by
certified or registered mail,  postage prepaid,  overnight  messenger  services,
telecopier or personal delivery as follows:

              If to Mallinckrodt:

                     Mallinckrodt Medical, Inc.
                     675 McDonnell Boulevard
                     St. Louis, Missouri 63134
                     Attention: Vice President - Ultrasound Imaging
                     Telecopier:  (314) 895-7281

              with a copy to:

                     Mallinckrodt Medical, Inc.
                     675 McDonnell Boulevard
                     St. Louis, Missouri 63134
                     Attention: Vice President and General Counsel
                     Telecopier:  (314) 895-7181

              If to MBI:

                     Molecular Biosystems, Inc
                     10030 Barnes Canyon Road
                     San Diego, California 92121
                     Attention: Chief Operating Officer
                     Telecopier:  (619) 452-6187

              with a copy to:


                     Craig P. Colmar, Esq.
                     Johnson and Colmar
                     300 South Wacker Drive
                     Suite 1000
                     Chicago, Illinois 60606
                     Telecopier:  (312) 922-9283

All notices sent by certified or  registered  mail shall be  considered  to have
been given two business days after being deposited in the mail. All notices sent
by  overnight  messenger  service,  telecopier  or  personal  delivery  shall be
considered to have been given when actually received by the intended  recipient.
Either party may change the address  designated  by notifying the other party in
writing.

      10.05 Governing Law. This Agreement is deemed to have been entered into in
the State of Missouri,  and its interpretation,  construction,  and the remedies
for its  enforcement  or breach are to be applied  pursuant to and in accordance
with the laws of the State of Missouri.

      10.06  Validity of  Agreement.  If any  provision  of this  Agreement  is,
becomes,  or is  deemed  invalid  or  unenforceable  in any  jurisdiction,  such
provision  shall be deemed  amended  to conform  to  applicable  law so as to be
valid,  legal and  enforceable in such  jurisdiction  so deeming.  The validity,
legality and  enforceability  of such provision shall not in any way be affected
or impaired  thereby in any other  jurisdiction.  If such provision cannot be so
amended without  materially  altering the intention of the parties,  it shall be
stricken in the  jurisdiction  so deeming,  and the remainder of this  Agreement
shall remain in full force and effect.

      10.07 Waiver.  No waiver of any right under this Agreement shall be deemed
effective  unless  contained in a writing  signed by the party charged with such
waiver, and no waiver of any right arising from any breach or failure to perform
shall be deemed to be a waiver of any future  such  right or of any other  right
arising under this Agreement.

      10.08 Entire  Agreement.  This Agreement,  together with the  Distribution
Agreement and the 1988 Investment Agreement, set forth and constitute the entire
agreement  between the parties hereto with respect to the subject matter hereof,
and  supersede  any and  all  prior  agreements,  understandings,  promises  and
representations  made by either party to the other concerning the subject matter
hereof and the terms applicable hereto.

      10.09 Headings and  References;  Incorporation  of Exhibits.  The headings
contained in this  Agreement are inserted for  convenience of reference only and
shall not be a part, control or affect the meaning hereof. All references herein
to Articles and  Sections  are to the  Articles  and Sections of this  Agreement
(unless  specifically  referring to Articles or Sections of the 1988  Investment
Agreement or the Distribution  Agreement).  All references  herein to Appendices
are to the  Appendices  hereto,  each of which  shall be  incorporated  into and
deemed a part of this Agreement.  An exception in any Appendix to any particular
representation and warranty in Article 3 shall be considered an exception to all
other applicable representations and warranties in Article 3.

      10.10 Counterparts.  This Agreement may be executed in counterparts,  each
of which shall be deemed to be an original,  but which together shall constitute
one and the same instrument.

      10.11  Legends.  The  stock  certificate   delivered  at  the  Closing  in
accordance with Section 2.03, and each stock certificate representing any shares
of Other  Common  Stock which MBI may issue to  Mallinckrodt  or an Affiliate of
Mallinckrodt,  shall bear a legend  substantially  to the effect that the shares
represented by the  certificate  have not been  registered  under the Securities
Act, as amended,  or the securities laws of any state and that (ii) the transfer
of any of these shares is subject to the  restrictions  and  limitations of this
Agreement. MBI shall remove the former legend if and when the shares represented
by the certificate  have been registered  under the Securities Act in accordance
with Article 8 or become freely salable under the Commission's Rule 144(k). Each
such stock  certificate  shall also bear a legend to the effect  that the shares
represented  by the  certificate,  while owned of record by  Mallinckrodt  or an
Affiliate  of  Mallinckrodt,  constitute  "Repurchasable  Shares"  as defined in
Section 9.02 of the Amended and Restated Distribution Agreement.

      10.12 Term. The term of this  Agreement  shall continue until the later of
(i) the date that MBI exercises  either of its options under Sections 9.01(a) or
(b) of the Distribution  Agreement in respect of each affected territory or (ii)
the date that  Mallinckrodt and its Affiliates cease to own any shares of Common
Stock or Other Common Stock.


                                                 Molecular Biosystems, Inc.


                                                 By  /s/ Kenneth J. Widder
                                                         Kenneth J. Widder, M.D.
                                                         Chairman and Chief
                                                         Executive Officer


                                                 Mallinckrodt Medical, Inc.


                                                 By  /s/ Robert G. Moussa
                                                         Name: Robert G. Moussa
                                                         Title:President and 
                                                         Chief Executive Officer


<PAGE>





                                  Appendix 3.07

                              (Material Contracts)



No exceptions.


<PAGE>


                                  Appendix 3.13

                              (Absence of Changes)



No exceptions.


                               Amendment No. 3 to

                  License and Cooperative Development Agreement



        This  Amendment  (the  "Amendment")  made as of October 24, 1995, by and
between Nycomed Imaging AS, a Norwegian corporation  ("Nycomed"),  and Molecular
Biosystems, Inc., a Delaware corporation ("MBI"), to the License and Cooperative
Development  Agreement  dated as of December 31, 1987 between MBI and  Nycomed's
predecessor  in  interest,  Nycomed  AS, as amended by (i) the  Amendment  dated
February 16, 1989 and (ii) the  Amendment  dated June 15, 1989 (as amended,  the
"License Agreement").

                                Witnesseth that:

        WHEREAS,   Nycomed  desires  to  transfer  back  to  MBI,  by  means  of
terminating,  all of  Nycomed's  rights  under the  License  Agreement  to test,
evaluate  and develop  Licensed  Products and to make,  have made,  use and sell
Licensed  Products in the Territory,  except for certain rights retained for the
limited  purposes  described  in the  following  recital,  and  MBI  desires  to
reacquire  these  rights,  on the terms and  subject to the  conditions  of this
Amendment; and

        WHEREAS,  the  parties  contemplate  that MBI will seek a new  strategic
partner to act as its  licensee in the  Territory.  The parties have agreed that
while MBI seeks such a partner (and in the subsequent transition),  Nycomed will
continue the clinical trials,  product  registrations and other development work
currently in progress in connection with Licensed Products which it undertook in
the License  Agreement.  The parties  have also agreed  that,  at MBI's  option,
Nycomed will manufacture  certain Licensed Products for sale in the Territory by
MBI or its licensees under a separate supply agreement.

        NOW,  THEREFORE in consideration  of the covenants  contained herein and
other good and valuable consideration,  the receipt and sufficiency of which are
hereby acknowledged, the parties agree as follows:

       1.    Effect of this Amendment.

             Except as  specifically  terminated or modified by this  Amendment,
the  provisions of the License  Agreement  shall  continue in effect;  provided,
however,  that in the event of any inconsistency or conflict between the License
Agreement and this  Amendment,  the provisions of this  Amendment  shall govern.
Capitalized terms which are used in this Amendment without definition shall have
the same meanings that they have in the License Agreement.

       2. Termination of License.  Except for continuing on a nonexclusive basis
for the limited purpose and limited  duration of (i) enabling Nycomed to perform
its obligations  under Section 4 of this Amendment and (ii) enabling  Nycomed to
manufacture  Infoson in  accordance  with the Supply  Agreement  (as  defined in
Section 5 of this Amendment), the license granted in Section II.A of the License
Agreement is terminated as of the date of this Amendment.



       3.    Payments by MBI.  MBI shall pay Nycomed as follows:

             3.1 Fixed Payment Upon Execution. Upon execution of this Amendment,
       MBI shall pay to Nycomed $700,000.

             3.2  Additional   Fixed  Payment.   MBI  shall  pay  an  additional
       $2,000,000  to Nycomed upon the earlier of (i) March 31, 1996 or (ii) the
       execution by MBI of a definitive  agreement  with a licensee or strategic
       partner  covering  the grant by MBI of rights  to the  Technology  Rights
       and/or Licensed  Products  ("License  Rights") in a portion or all of the
       Territory.

             3.3 Additional Payment. In addition to the foregoing fixed payments
       aggregating  $2,700,000,  MBI shall pay to Nycomed  45% of any amounts in
       excess of  $2,700,000  received by MBI in either  up-front,  milestone or
       similar payments from third parties in  consideration  for MBI's grant of
       License Rights in a portion or all of the Territory at any time after the
       date of this  Amendment.  MBI shall make each such payment within 30 days
       of its  receipt of the  payment  from the third  party and shall  furnish
       Nycomed with a copy of the relevant  provisions of the agreement pursuant
       to which  such  third  party  has made the  payment  to MBI;  if  Nycomed
       requests,  MBI shall furnish a copy of such  agreement to an  independent
       third party  acceptable to both MBI and Nycomed for purposes of verifying
       the  amount of MBI's  payments.  If  payments  are made to MBI by a third
       party  which has  rights  to  Licensed  Products  in other  countries  in
       addition to the  Territory  and such  payments  are  contingent  upon the
       transfer to such third party of License Rights in a portion or all of the
       Territory,  an appropriate  portion of any such contingent  payments that
       are not specified as payment for License Rights in the Territory shall be
       characterized  as  payments  for  License  Rights  in the  Territory  for
       purposes of sharing  45% with  Nycomed,  taking  into  account the market
       value of the  portion of the  Territory  in which  such  third  party has
       License Rights in relation to the market value of all other  countries in
       which such third party has such rights.

             3.4  Change of Control Payment.

                  3.4.1If  prior  to the  execution  of a  definitive  agreement
             between  MBI and a  strategic  partner  for  License  Rights in the
             Territory  to  both  (i)  Albunex(R)   (including  the  formulation
             developed by Nycomed and known as "Infoson")  ("Albunex")  and (ii)
             the product consisting of sonicated albumin microspheres containing
             perfluoropropane which MBI has code-named "FS069" ("FS069"),  there
             is a "Change of  Control"  of MBI (as  defined in Section  3.4.4 of
             this Amendment,  MBI shall pay to Nycomed, within 30 days after the
             Change of Control,  [omitted; filed separately with the Commission]
             (to  reflect  the value of the two  products as part of the overall
             value of MBI) if such  Change of  Control  occurs on or before  the
             second  anniversary  of the date of this  Amendment,  or  [omitted;
             filed  separately  with the  Commission]  if such Change of Control
             occurs thereafter.

                  3.4.2If  License  Rights to either  Albunex  or FS069 (but not
             both) have been granted by MBI to a strategic  partner and a Change
             of Control then takes place on or before the second  anniversary of
             the date of this  Amendment,  MBI shall pay to  Nycomed,  within 30
             days after the Change of Control,  [omitted;  filed separately with
             the Commission] for the product which was not previously licensed.

                  3.4.3If  License  Rights to either  Albunex  or FS069 (but not
             both) have been granted by MBI to a strategic  partner and a Change
             of Control  then takes  place after the second  anniversary  of the
             date of this  Amendment,  MBI shall pay to Nycomed,  within 30 days
             after the Change of Control,  [omitted;  filed  separately with the
             Commission] for FS069 if FS069 is the remaining unlicensed product,
             or [omitted;  filed  separately with the Commission] for Albunex if
             Albunex is the remaining unlicensed product.

                  3.4.4A  "Change of Control"  for  purposes of this Section 3.4
             shall  mean the  acquisition  by any  corporation  (or by any other
             person or group) of more than 50% of the  combined  voting power of
             MBI's outstanding Common Stock and its other outstanding securities
             ordinarily  entitled to vote in elections of directors  (whether by
             MBI's   issuance  or   repurchase   of  its  capital   stock,   any
             reorganization, recapitalization, reclassification or similar event
             with respect to MBI's capital stock,  any transfer by  stockholders
             of MBI of shares of capital  stock held by such  stockholders,  any
             merger or consolidation of MBI into or with another entity,  or any
             transfer or sale of substantially all the assets of MBI).

                  3.5  Royalty.   During  the  remaining  term  of  the  License
       Agreement,  MBI shall pay to  Nycomed a royalty  equal to 2.5% of the Net
       Selling  Price of Licensed  Products  sold in the Territory by MBI or its
       licensees on sales of up to (and  including) $30 million in any one year,
       and 3.5% of the Net Selling Price of Licensed Products on sales above $30
       million in any one year. A separate  royalty  shall be payable in respect
       of each Licensed Product.

                  3.5.1Definition  of Net Selling  Price.  For  purposes of this
             Amendment,  "Net Selling  Price" shall mean the gross selling price
             of any Licensed Product sold by MBI, its Affiliates,  sublicensees,
             distributors,  representatives,  or  agents to an  unrelated  third
             party  for  use in  the  Territory  less  allowances  for  spoiled,
             damaged,  outdated or returned products,  and less trade,  quantity
             and cash  discounts  allowed,  and less all sales and excise taxes,
             duties paid,  transportation and handling charges.  Notwithstanding
             the  foregoing,  discounts in excess of a  commercially  reasonable
             discount for the distribution of a Licensed Product  independent of
             the  distribution of other products will be disregarded  regardless
             of whether the Licensed Product is distributed  independently or in
             connection with another product.

                  3.5.2Reporting;   Payment.  During  any  period  that  MBI  is
             obligated to pay  royalties to Nycomed  under this Section 3.5, MBI
             shall  calculate  and pay the royalties  quarterly,  within 60 days
             after the end of each  calendar  quarter.  MBI shall  also  provide
             Nycomed,  within such 60-day period, with a written report for that
             quarter  with  adequate  detail to support the  calculation  of the
             royalty.  Royalties  hereunder shall be paid in U.S.  Dollars,  and
             calculations based on sales in other currencies shall be made based
             on the exchange rates published in The Wall Street Journal (the New
             York  foreign  exchange  selling  rates for trading  among banks in
             amounts  of $1 million  or more) for the last  business  day in the
             applicable calendar quarter.

                  3.5.3MBI Records; Accounting Review. MBI shall keep full, true
             and accurate books of account  containing all particulars which may
             be necessary  for the purpose of showing the  royalties  payable to
             Nycomed pursuant to this Section 3.5. Said books and the supporting
             data shall be open and  accessible at all  reasonable  times during
             the  term of the  Agreement  to the  inspection  of an  independent
             certified   accountant  or  other  appropriately   certified  agent
             retained  by  Nycomed  and  reasonably  acceptable  to MBI  for the
             purpose of verifying MBI's royalty statements,  or MBI's compliance
             in other respects with the royalty  provisions of this Section 3.5.
             MBI may take reasonable steps to provide  Nycomed's agent only such
             information  as is necessary for such  verification,  and Nycomed's
             agent shall report to Nycomed only such  information as is required
             by  Nycomed  to  confirm  MBI's  compliance  with the terms of this
             Section 3.5.  Nycomed and its agent shall keep any  information  so
             obtained confidential.

                  3.6 Certain  Proprietary  Rights. As provided below in Section
             8.7.3 of this Amendment,  Section VI.J is being  terminated by this
             Amendment.  As  additional  consideration  for the  termination  of
             Nycomed's  license and other amendments to the Agreement  described
             herein, MBI hereby  acknowledges that as a result of the settlement
             in this  Agreement,  it has no rights to receive or license any New
             Developments,  Assisted New Developments or Joint Developments from
             Nycomed,  and MBI waives and releases any claims related to (i) the
             failure, if any, of Nycomed to develop or provide New Developments,
             Assisted New Developments or Joint  Developments  prior to the date
             of this Amendment, and (ii) any such New Developments, Assisted New
             Developments or Joint  Developments that may have been developed or
             provided by Nycomed.

       4.    Continuing Development Work by Nycomed.

             4.1 Nycomed shall  continue the product  registration  work for the
       Licensed  Products in the Territory  specifically  listed in Exhibit A to
       this  Amendment  (Summary of  Registration  Status of July 1, 1995) for a
       period which shall terminate on the first to occur of (i) the approval by
       the regulatory authority in each of the respective  countries,  as to the
       work in that  country,  or (ii)  Nycomed's  receipt of notice from MBI to
       terminate all such  registration  activities.  Nycomed shall use its best
       efforts  to obtain the  regulatory  approvals  promptly  but shall not be
       obligated to undertake  any new  regulatory  filings in addition to those
       listed in Exhibit  A. In  addition,  Nycomed  shall not be  obligated  to
       initiate  any  new  studies  which  may be  requested  by any  regulatory
       authorities as a condition to regulatory approval.

             4.2 Nycomed  shall  continue the specific  clinical  trials for the
       Licensed  Products  in the  Territory  which are  described  in detail in
       Exhibit B to this  Amendment,  for a period  which will  terminate on the
       earlier of (i) the completion of the clinical  trials listed in Exhibit B
       or (ii)  Nycomed's  receipt  of  notice  from MBI to  terminate  all such
       activities. Nycomed shall use its best efforts to complete such trials on
       the time  schedule  listed  for each  trail in Exhibit B but shall not be
       obligated to undertake any trials in addition to those so listed.
             4.3 Nycomed's retained license for this continuing development work
       shall terminate when its obligations under this Section 4 are completed.

             4.4  Additionally,  Nycomed  shall  immediately  provide to MBI all
       information (or appropriate  summaries  thereof) in Nycomed's  possession
       related to mean size and/or  concentration of microspheres used or useful
       in manufacturing Infoson and intended to increase Infoson's efficacy.

             4.5 Nycomed  shall take all  necessary  or  appropriate  actions to
       permit MBI or any licensee or assignee of rights through MBI to reference
       or  otherwise  receive  the  benefit  of  all  regulatory   applications,
       registrations or approvals filed or obtained by Nycomed.

       5. Supply  Agreement.  At MBI's option,  exercisable at any time from the
date of this Amendment  through March 31, 1996, MBI and Nycomed shall enter into
a supply agreement for Infoson substantially in the form of the supply agreement
attached as Exhibit C to this  Amendment (the "Supply  Agreement"),  on economic
terms to be negotiated.

       6.  Trademark  Assignment.  Upon the  effective  date of this  Amendment,
Nycomed shall assign to MBI all of Nycomed's  rights to the trademark  "Infoson"
(the " Trademark") and agrees to execute and file, if necessary, all appropriate
Trademark assignment documentation in all relevant jurisdictions. MBI will grant
a limited  license to Nycomed to use the Trademark to the extent that use of the
Trademark by Nycomed is necessary or helpful for  Nycomed's  performance  of its
activities pursuant to Section 4 of this Amendment.

       7. Other Agreements.  Nycomed and MBI agree that the Investment Agreement
dated  December 31, 1987 between  Nycomed AS and MBI, as amended by an Amendment
dated  February  16, 1989 (as  amended,  the  "Investment  Agreement"),  and the
related  Registration  Agreement  dated  December  31,  1987 (the  "Registration
Agreement") are hereby terminated and of no further force or effect.

       8.    Other  Provisions of the License  Agreement.  Nycomed and MBI agree
that the following provisions of the License Agreement shall be terminated or 
modified as of the date of this Amendment as follows:

             8.1 Section II.A.  Nycomed's retained license under Section II.A of
       the License  Agreement for the purpose of enabling Nycomed to manufacture
       Infoson in accordance  with the Supply  Agreement  shall terminate on the
       earlier of (i) the  expiration  without  having been  exercised  of MBI's
       option under Section 5 of this Amendment to require Nycomed to enter into
       the Supply Agreement or (ii) if MBI exercises its option,  the expiration
       or  termination  of the  Supply  Agreement  (as the  term  of the  supply
       agreement may be renewed or extended).

             8.2  Section II.E. Section II.E of the License Agreement("Trademark
      License") is terminated.

             8.3  Section   II.F.   Section   II.F  of  the  License   Agreement
       ("Technology  Transfer")  is  terminated  except to the  extent  that any
       Technical  Data is necessary or helpful for Nycomed's  performance of its
       activities pursuant to Section 4 of this Amendment or for the manufacture
       of Infoson in  accordance  with the Supply  Agreement.  MBI shall have no
       obligation to transfer  Technical  Data for the latter purpose unless and
       until MBI and Nycomed enter into the Supply Agreement.

             8.4  Article III. Article III of the License Agreement ("Other
       Territories") is terminated.

             8.5  Article IV.  Article IV of the License Agreement ("Payments")
       is terminated.

             8.6  Article V.  Article V of the License Agreement ("Royalties, 
       Records and Reports") is terminated.

             8.7  Article  VI.  Article  VI of  the  License  Agreement  ("Joint
       Development,  Product  Specification  and  Labeling")  is  terminated  as
       follows:

                  8.7.1 Sections  VI.A, VI.C, VI.D, VI.E and VI.F.of the License
             Agreement ("Clinical Trials," "Access to Clinical Centers," "Mutual
             Assistance" and "Revisions to  Specifications,"  respectively)  are
             terminated  except to the extent that the parties'  performance  of
             their respective  obligations  under those sections is necessary or
             helpful for Nycomed's  performance  of its  activities  pursuant to
             Section 4 of this Amendment.

                  8.7.2 Sections VI.B,  VI.G,  VI.H  and  VI.I  of  the  License
             Agreement   ("MBI   Product    Development,    Pre-Marketing    and
             Pre-Production Activities;  Access to Clinical Data and Benefits of
             Pre-marketing  Activities,"  "Changes  in  the  LICENSED  PRODUCT,"
             "Identification  of MBI,"  "Interruption  in  NYCOMED's  Ability to
             Supply"  and  "Assistance  in  Addressing  Insufficient  Capacity,"
             respectively) are terminated.

                  8.7.3 Section VI.J of the License Agreement("Improvements")is
             terminated.

             8.8  Section IX.A. Section IX.A of the License Agreement is amended
             to read as follows:

                       This  Agreement,  unless  earlier  terminated as provided
                       herein,  shall  expire  in  accordance  with  the  period
                       specified in Article VIII, above.

             8.9  Section IX.D. Section IX.D of the License Agreement is amended
             to read as follows:

                       The   termination   of  this   License  and   Cooperative
                       Development  Agreement  shall  terminate all  sublicenses
                       made by NYCOMED  hereunder,  and the  termination  of any
                       license  granted to Nycomed  under this  Agreement  shall
                       terminate  all  sublicenses  made by  NYCOMED  under that
                       license.

             8.10 Section IX.E. Section IX.E of the License Agreement is amended
             to read as follows:

                       MBI's  responsibilities  and  obligations  to  report  to
                       Nycomed  and  to  pay  royalties  to  NYCOMED  as to  any
                       Licensed Product sold by MBI or sublicensees or to pay to
                       Nycomed any  outstanding  amounts,  due and payable under
                       this License Agreement prior to termination hereof, shall
                       survive such termination.

             8.11 Section IX.F. Section IX.F of the License Agreement is 
             terminated.

             8.12 Article XI.Article XI of the License Agreement("Infringement")
             is terminated as follows:

                  8.12.1 Sections XI.A, XI.B, XI.C, XI.D and XI.F of the License
             Agreement ("NYCOMED's Right to Enforce," "Cooperation," "Litigation
             Procedures," "Litigation by NYCOMED" and "Infringement; Invalidity;
             Competitive Third-Party Marketing," respectively) are terminated.

                  8.12.2 Section XI.E of the License Agreement ("Indemnification
             by MBI") is terminated in respect of all infringement claims except
             infringement  claims arising from Nycomed's  manufacture of Infoson
             in accordance  with the Supply  Agreement (if MBI and Nycomed enter
             into the Supply Agreement).

             8.13 Article XII. Article XII of the License Agreement ("NYCOMED's
             Efforts") is terminated.

             8.14 Article XIV. Article XIV of the License Agreement ("Scope of
             Agreement") is amended to read as follows:

                       This  Agreement  shall include and shall not be effective
                       without  Appendices  I and  II,  which  are  incorporated
                       herein by reference.

       9. Waiver of Claims.  MBI and  Nycomed  each waive and release any claims
that it may have  against  the other as of the date of this  Amendment  under or
relating  to the License  Agreement  (including,  but not limited to,  claims in
respect of New  Developments  developed  by the other party prior to the date of
this Amendment),  the Investment  Agreement or the Registration  Agreement.  The
parties acknowledge that MBI's waiver and release in this Section 9 is provided,
in  addition  to the  payments  that MBI is  required  to make to Nycomed  under
Sections 3.1, 3.2 and 3.3 of this Amendment,  in  consideration of the covenants
and agreements of Nycomed set forth herein.

       10. Confidentiality.  MBI and  Nycomed  agree to consult with the other
as to the content of any public announcement of this Amendment prior to such 
announcement.

       IN WITNESS  WHEREOF,  the parties have hereunto set their hands and seals
and duly executed this Amendment as of the day and year first written above.

                                                   NYCOMED IMAGING AS



                                               By: /s/ T. Talseth
                                                   Name:   T. Talseth
                                                   Title:  President


                                                   MOLECULAR BIOSYSTEMS, INC.


                                               By: /s/ Kenneth J. Widder
                                                   Name: Kenneth J. Widder, M.D.
                                                   Title: Chairman and Chief
                                                   Executive Officer


<PAGE>


                                                      EXHIBIT A


INFOSON (Albunex)

REGULATORY STATUS

                                                          1 July  1995
                                                          Page 1 of 1
<TABLE>
<CAPTION>

============================ ----------------------- ------------------------ ------------------------- ====================
COUNTRY                      SUBMITTED               APPROVED                 AUTHORIZED                MARKETED
============================ ----------------------- ------------------------ ------------------------- ====================
<S>                          <C>                     <C>                      <C>                        <C>
Austria                      01.07.93
Finland                      17.12.92                16.01.95                 16.01.95
Norway                       29.03.94
Sweden                       03.11.92                28.01.94                 28.01.94
Switzerland                  01.12.92
UK                           11.09.92                25.02.93                 21.07.94
============================ ======================= ======================== ========================= ====================
Belgium                      27.09.94
Denmark                      21.09.94
France                       22.09.94
Germany                      20.09.94
Greece                       22.09.94
Ireland                      27.09.94
Italy                        27.09.94
Luxembourg                   26.09.94
The Netherlands              22.09.94
Spain                        22.09.94
============================ ======================= ======================== ========================= ====================
The Multi-State Procedure started 15.10.94 in the EEC countries listed above
============================ ======================= ======================== ========================= ====================
USA                          14.09.90                                         05.08.94
============================ ======================= ======================== ========================= ====================
</TABLE>


<PAGE>

<TABLE>
<CAPTION>

===================================================================================================================================
                                                        CENTRAL CLINCIAL TRIALS-NOT INCLUDED IN 1st FILE INFOSON          EXHIBIT B
====================================================================================================================================
                                                              ONGOING TRIALS
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
Trial No. Indication/Application                        No. of Patents      No of Patients          Estimated date   Estimated Date
                                                        Enrolled            Planned to be Enrolled  patent inclusion Final Report
                                                                                                    complete                        
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
<S>       <C>                                           <C>                 <C>                     <C>              <C>
IAXH026   Myocardial Contrast Enhancement, I.C.         11                  25                      Terminated        IQ96
          Injection
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
IAXH032   Heart Chamber Opacification and I.V. Safety   20                  20                      Complete         IQ96

========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXU033b   Fallopian Tube Patency                        Tot. 033b/048 221   Tot. 033b/048 221       Complete         Oct. 95
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXH038    Heart Chamber Opacification and I.V. Safety   30                  30                      Complete         IQ96
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXH041    Heart Chamber Opacification and I.V. Safety   24                  67                      Terminated       IIQ96
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXV042    Cardia Doppler/Mitral Regurgitation           45                  45                      Complete         Oct. 95
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXH044    Heart Chamber Opacification and I.V. Safety   9                   50                      IQ96             IIIQ96
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXV045    Arterial Stenosis and Organ Perfusion         10                  10                      Complete         IV95
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXU057    Bladder Reflux                                2                   10                      IVQ95            IQ96
========= --------------------------------------------- ------------------- ----------------------- ---------------- ===============
AXU048    Fallopian Tube Patency                        See AXU033b
========= ============================================= =================== ======================= ================ ===============
AXH049    Heart Chamber Opacification and I.V. Safety   13                  50                      Terminated       IQ96
          Cardiac Doppler
========= ============================================= =================== ======================= ================ ===============
</TABLE>
<PAGE>
<TABLE>

                             CENTRAL CLINICAL TRIALS-NOT INCLUDED IN 1st FILE INFOSON
                                                       ONGOING TRIALS



<CAPTION>
============ ------------------------------------- ---------------- -------------------------- ---------------------- ==============
Trial No.    Indication/Application                No. of Patents   No. of Patens Planned to   Estimate Date Patent   Estimate date
                                                   Enrolled         be Enrolled                Inclusion Complete     Final Report
============ ------------------------------------- ---------------  -------------------------- ---------------------  ==============
<S>                                                <C>              <C>                        <C>                    <C>
AX11050      Heart Chamber Opacification and       30               30                         Complete               IVQ95
             I.V. Safety Stress-Echocardiography
============ ------------------------------------- ---------------- -------------------------- ---------------------- ==============
AXH051       Arterial Stenosis and Organ           3                18                         IVQ95                  IIQ96
             Perfusion
============ ------------------------------------- ---------------- -------------------------- ---------------------- ==============
AXH055       Myocardia Contract Enhancement,       10               10                         Complete               Oct. 95
             I.V. Injection
============ ===================================== ================ ========================== ====================== ==============
AXU056       Fallopian Tube Patency                16               Max. 120                   Dec. 95                March 96
============ ===================================== ================ ========================== ====================== ==============


</TABLE>
<PAGE>
<TABLE>
<CAPTION>
                                         LOCAL CLINICAL TRIALS INFOSON
                                               ONGOING TRIALS
          
============== ------------------------------------- ----------------- ---------------------- --------------------- ==============
Trial No.      Indication/Application                No. of Patents    No. of Patents Planned Estimate Date Patent  Estimate Date 
                                                     Enrolled          to be Enrolled         Inclusion Complete    Final Report
============== ------------------------------------- ----------------- ---------------------- --------------------- ==============
<S>            <C>                                   <C>               <C>                    <C>                      <C> 
AXH01          Mammary Graft, I.V. Injection         30                30                     Complete              4Q95
============== ------------------------------------- ----------------- ---------------------- --------------------- ==============
AXH003         Heart Chamber Opacification, LV       73                120                    Terminated            2Q96
               Function, I.V. Inj.
============== ------------------------------------- ----------------- ---------------------- --------------------- ==============
AXH004         Lad, Cor. Sinus, I.V. Inj./Tee        9                 30                     IQ96                  2Q96
============== ------------------------------------- ----------------- ---------------------- --------------------- ==============
AXH06          Heart Chamber Opacification, L.V.     5                 30                     2Q96                  4Q96
               Function I.V. Inj.
============== ===================================== ================= ====================== ===================== ==============
AXH501         Heart Chamber Opacification, L.V.     35                50                     4Q96                  IQ96
               Function, I.V., Inj.
============== ===================================== ================= ====================== ===================== ==============

</TABLE>
<PAGE>


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




                                                                       EXHIBIT C

                                     FORM OF
                                SUPPLY AGREEMENT

       This Supply Agreement (the "Agreement") is made as of ,1995by and between
Nycomed Imagining A.S., a Norwegian Corporation ("Nycomed"), and Molecular 
Biosystems, Inc., a Delaware Corporation ("MBI").

       WHEREAS,  Nycomed  and MBI  are  parties  to a  License  and  Cooperative
Development  Agreement  dated  December  31,  1987,  as  amended  (the  "License
Agreement")  pursuant to which  Nycomed has engaged in  development  work on the
Licensed  Products  as defined  therein  (including  ALBUNEX),  and  Nycomed has
developed a manufacturing capability for the Licensed Products;

       WHEREAS,  the License  Agreement has been amended by an Amendment of even
date  herewith,  pursuant  to  which  Nycomed  has  transferred  back to MBI the
marketing  rights for the Licensed  Products in the  Territory,  but the parties
desire that Nycomed  manufacture and supply the Licensed  Products to MBI or its
licensee in the Territory, on the terms provided in this Supply Agreement;

       NOW,  THEREFORE,  in consideration  of the mutual covenants  contained in
this  Agreement and for other good and valuable  consideration,  the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

       1.    Definitions.

      1.1.   "Agreement" shall mean this Supply Agreement, as it may be amended
 from time to time.

      1.2.   "License  Agreement"  shall mean the License and Cooperative 
 Development  Agreement date December 31, 1987, as amended by an Amendment dated
June 15, 1989 and by Amendment No. 2 of even date herewith.

      1.3.  "Licensed  Product"  shall mean the product for  ultrasound  imaging
contrast covered by, or sold for use in, or manufactured  according to a process
covered by any pending claim in any pending patent application or by, a claim in
any unexpired patent which claim, or a claim corresponding  thereto in any other
patent,  has not been  declared  invalid by a court of  competent  jurisdiction,
which patent application or patent is included in the Technology Rights and that
meets the  specifications  for the  Albunex  product  described  by  Nycomed  as
"Infoson.' For purposes of this Agreement,  "Licensed Products" does not include
FS069.

      1.4.   "Technology Rights" shall mean the following:

             1. those patents and patent  applications as currently set forth in
Appendix I to the  License  Agreement,  together  with any  patent  which may be
issued  thereunder,  and any divisional,  continuation  or  continuation-in-part
applications  based  thereon,  and  any  patents  resulting  from  any  of  said
applications and any reissues or extensions based on any of such patents;
                                                  
             2. any foreign patent applications claiming subject matter embodied
in the  aforesaid  patents and patent  applications,  which have been or will be
filed in the countries of the Territory as hereinafter defined together with any
patent  which  may  be  issued  thereunder,  any  divisional,   continuation  or
continuation-in-part  applications based thereon, and any patents resulting from
any of said  applications  and any reissues or  extensions  based on any of such
patents;

             3. any other  patents or patent  applications,  or trade secrets or
know-how  presently  owned by,  being  developed  or  subsequently  developed or
acquired  by MBI which  relate  directly to the  design,  manufacture  or use of
microspheres for ultrasound imaging contract in vascular applications.

      1.5.  "Territory"  shall mean those  countries set forth in Appendix II to
the License Agreement,  their Territories and Possessions,  as amended from time
to time pursuant to Article VIII of the License Agreement.

      2.     Term of this Agreement. This Agreement shall commence on the
effective date hereof and shall continue for an initial term ending on the 
second anniversary of the first commercial sale of the Licensed Products in the
Territory.  [Renewal provisions to be discussed.]

      3. Supply of Licensed  Products.  MBI shall  purchase  from  Nycomed,  and
Nycomed shall supply to MBI, all MBI's requirements of the Licensed Products for
use or sale in the Territory, including quantities for research, development and
clinical trials as well as for commercial  purposes after approval for marketing
the Licensed Products has been obtained,  and including all quantities  required
by any licensees of MBI in the Territory.

In the event of any significant  interruption in Nycomed's ability to supply the
Licensed  Products  to  MBI  hereunder,   Nycomed  shall,  promptly  after  such
interruption,  use reasonable  efforts to provide all necessary  information and
appropriate raw materials to permit MBI to manufacture the Licensed Products for
its requirements in the Territory so long as such interruption  continues.  When
Nycomed can once again supply MBI's requirements,  MBI shall once again purchase
such requirements from Nycomed.

      4. Price.  The price of the License Product to MBI shall be Nycomed's full
manufacturing cost plus %. Nycomed shall prepare and submit to MBI no later than
the  time  Licensed  Products  are  first  supplied  under  this  Agreement,   a
calculation  of its  full  manufacturing  cost,  including  [definition  of full
manufacturing cost to be discussed].

In the event of increases or decreases  in Nycomed's  full  manufacturing  cost,
Nycomed  shall provide MBI with notice of not less than 30 days of such increase
or  decrease,  along with an  explanation  of the  reasons  for the  increase or
decrease and a calculation of the new full manufacturing cost figures.

      5. Specifications.  The Licensed Products to be supplied by Nycomed to MBI
hereunder shall conform to the specifications established by mutual agreement of
Nycomed and MBI, as modified from time to time to meet the  requirements  of the
relevant governmental  authorities.  The Licensed Products shall also conform to
the  specifications  set forth in applicable  regulatory filings relating to the
Licensed Products in the countries included in the Territory. Once the necessary
governmental  approvals  are  obtained,  the parties  shall set forth the agreed
specifications  in an  Exhibit  A to be  attached  to this  Agreement,  entitled
"Specifications for Licensed Products".  Exhibit A shall also contain any agreed
quality  control tests and inspection  procedures and shall be amended from time
to time to reflect any change in the mutual  agreements of the parties or in the
regulatory requirements.

      6. Non-Conforming Substances. MBI may reject and shall not be obligated to
pay for,  or if payment has been made then MBI shall  receive a credit for,  any
substances   that  do  not  conform  to  the   specifications   and  performance
requirements  set forth in Exhibit A. MBI shall  promptly  notify Nycomed of any
substances that MBI is rejecting as  non-conforming  or defective  substances to
Nycomed at Nycomed's  expense.  Any such notice of rejection shall be in writing
and shall specify the lot number of the nonconforming or defective mature of the
substance.  MBI shall be deemed to have accepted any substances  delivered to it
unless it gives notice of rejection within 90 days of receipt.

Notwithstanding the provisions of the foregoing paragraph,  if the nonconformity
or defect is not readily  apparent by physical  inspection or is not revealed by
applicable  acceptance  tests at the time the substance is delivered to MBI, MBI
may revoke its acceptance by giving Nycomed prompt notice upon discovery of such
nonapparent  nonconformity  or defect.  Any such notice  shall be in writing and
shall specify the nonconforming or defective nature of the substance.

Nycomed  shall  promptly  deliver to MBI a quantity of Licensed  Products  which
conform  to the  specifications  and  which is equal in  amount  to he amount of
substance that has been rejected.

MBI shall have the option at any time to take batch specimens and to conduct its
own tests and confirm that the substance conforms to the specifications prior to
shipment by Nycomed.

In the event that Nycomed and MBI disagree as to the conformity of substances to
the  specifications  and  performance  requirements  set forth in Exhibit A, the
dispute  shall be  referred  for a final  resolution  to a  mutually  acceptable
independent laboratory.

      7.  Facility  Access.  Upon  request  by MBI  from  time to time  and upon
reasonable notice and during normal business hours, Nycomed will grant access to
its  facilities  and  records  to  MBI's  manufacturing,   quality  control  and
compliance  inspectors.  Nycomed  shall  allow such  inspectors  to inspect  the
manufacturing and quality control testing operations,  compliance procedures and
records  relating to the  Licensed  Products,  as well as inventory  levels,  to
insure  that  Nycomed  can meet MBI's  reasonable  future  requirements  for the
Licensed  Products,  is manufacturing  the Licensed  Products in conformity with
applicable  laws and  regulations,  and is otherwise  satisfying its obligations
under  this  Agreement.  Such  inspections  shall  be  conducted  so as  not  to
unreasonably interfere with Nycomed's operations and after notice of at least 30
business days.

      8.  Orders  and  Deliveries.  At least 90 days  before  the  start of each
calendar  quarter,  MBI shall  provide  Nycomed  with a written  estimate of the
amounts of the Licensed Products it will desire for shipment during such quarter
and during each of the next five quarters (each such six-quarter  estimate after
the first one shall  contain a revision  of the  estimate  previously  made with
respect to the first five quarters).

MBI shall submit firm orders for the Licensed Products at least 90 days prior to
requested  shipment  date. If the total of MBI's firm orders for shipment in any
quarter  exceeds % of its original  estimate for the quarter or exceeds % of the
total of its order for shipment during the preceding quarter, Nycomed may extend
the  shipment  date for the excess by such  reasonable  period as is required by
Nycomed for the manufacture thereof.

The terms of all sales of Licensed Products hereunder shall be F.O.B.  Nycomed's
place of manufacture,  and MBI shall  reimburse  Nycomed for the cost of freight
and  insurance  and  shall  bear  the  cost of  customs  duty  with  respect  to
importation of Licensed Products into any designated country for shipment.

      9.     Terms of Payment. Payment for all quantities of Licensed  Products 
supplied hereunder shall be made by MBI within 30 days after receipt of 
Nycomed's invoice.  Nycomed shall invoice MBI for Licensed Products supplied 
hereunder upon the date of shipment.

     10.     Taxes.  MBI shall be  responsible  for the  payment of all taxes,
imports, levies and  assessments  based upon its sale of  distribution  of the
Licensed  Products in the Territory,  including  obtaining  authorization  for,
and paying all the fees associated  with, the export and  transshipment  of the
Licensed Products.

Nycomed  shall  be  responsible  for  the  payment  of  all  taxes,  levies  and
assessments  based upon its manufacture and delivery of the Licensed Products to
MBI, and all taxes based upon Nycomed's  revenue or income  associated  with the
transactions contemplated by this Agreement.

In the event that either party is required to pay any taxes, imports,  levies or
assessments  for  which the  other is  responsible  under  this  Agreement,  the
responsible party shall promptly reimburse the other party for such payment upon
request.

     11.   Manufacturing   Practices.   Nycomed  shall  comply  with  all  laws,
regulations,  standards and practices  required in the countries  where MBI will
market and sell the  Licensed  Products  supplied  hereunder,  and the  Licensed
Products  shall  not  be  adulterated  or  misbranded  when  delivered  to  MBI.
Authorized   representatives  of  any  government  agency  or  safety  standards
organization shall be allowed access to Nycomed's  facilities for the purpose of
inspection   during  normal  business  hours  pursuant  to  applicable  law  and
regulations.

     12. Force Majeure.  Nycomed and MBI shall not be liable for failure to make
or take, or delay in making or taking,  any delivery due to war, strikes,  labor
trouble,  floods, fires shortages or interruption or transportation or any other
cause  beyond  their  respective  control,  but they shall make every  effort to
remove any such cause of their failure or delay as soon as possible.

     13.     Royalty.  MBI shall pay to Nycomed  royalties  as provided in the
Amendment to the License  Agreement  with respect to MBI's sale of all Licensed
Products supplied by Nycomed.

     14.  Arbitration.  If any dispute  arises and cannot be resolved after good
faith  efforts  between  the  parties  with  respect  to the  interpretation  or
implementation  of any provision in this  Agreement,  then the parties agrees to
submit to arbitration in order to resolve such  differences;  provided,  however
that disputes concerning the conformity of substances to specifications shall be
resolved as provided in Section 6 above. Any such arbitration shall be conducted
in London,  England, UK, in accordance with the arbitration rules there and then
obtaining of the International Chamber of Commerce.

     15.  Default.  If either  party fails or neglects to perform  covenants  or
provisions of this  Agreement and if such fault is not corrected  within 60 days
after  receiving  written  notice  form the other  party  with  respect  to such
default,  such other party shall have the right to terminate  this  Agreement at
any time by giving written notice to the party in default.

     16. Bankruptcy.  Either party may terminate this Agreement if, at any time,
the other  party  shall file in any court  pursuant to any statute of the United
States or of any individual state of foreign  country,  a petition in bankruptcy
or insolvency or for reorganization or for an arrangement or for the appointment
of a receiver  or trustee of the party or of its  assets,  or if the other party
shall be served with an involuntary  petition against it filed in any insolvency
proceeding,  and such petition  shall not be dismissed  within 60 days after the
filing  thereof,  or if the  other  party  shall  propose  to be a party  to any
dissolution or  liquidation,  or if the other party shall make an assignment for
the benefit of creditors.

     17.     General Provisions.

           17.1.  Amendment.  All amendments or modifications of this Agreement
shall be in writing and shall be signed by each of the parties hereto.

           17.2. Waiver.  Any waiver of any right, power or privilege  hereunder
must be in writing and signed by the party  being  charged  with the waiver.  No
delay on the part of any  party  hereto  in  exercising  any  right,  power,  or
privilege  hereunder  shall  operate  as a wavier of any other  right,  power or
privilege  hereunder,  nor shall nay  single or partial  exercise  of any right,
power or privilege  hereunder  preclude any other or further exercise thereof or
the exercise of any other right, power, or privilege.

           17.3.  Notices.  Any notice required or permitted to be given by this
Agreement shall be given in writing and shall be delivered personally or sent by
overnight  courier,  by facsimile with  confirmation  by first class mail, or by
certified mail, return receipt requested.  Notices delivered  personally or sent
by overnight courier or by facsimile with confirmation by first class mail shall
be effective on the date received,  while notices sent by certified mail, return
receipt requested shall be deemed to have been received and to be effective five
business  days  after  deposit  into the  mails.  Notices  shall be given to the
parties at the following  respective addresses or to such other addresses as any
parties shall designate in writing:

If to Nycomed:         Postal Address:
                                Nycomed Imagining A.S.
                                Post Office Box 4220 Torshov
                                N-0401 Oslo, Norway
                                Attention:  Tore Talseth, President




                                Address:
                                Nycovein 1-2
                                Oslo, Norway

If to MBI:                  Molecular Biosystems, Inc.
                                10030 Barnes Canyon Road
                                San Diego, California  92121
                                USA
                                Attention:  Kenneth Widder, Chairman

           17.4.  Successors  and  Assigns.  This  Agreement  and  each  of  its
provisions  shall be binding  upon and shall inure to the benefit of the parties
hereto and their respective  successors or to any assignee of substantially  all
of the  goodwill  and  business  and  assets  of a party  hereto  and  shall  be
assignable by MBI without  Nycomed's consent to a purchaser or licensee of MBI's
rights to sell Licensed Products in the Territory.

           17.5.  Governing Law.  This Agreement shall be governed by and shall
 be construed in accordance with the laws of the State of California, USA.

           17.6.  Severability.  In the event that any provision of this 
Agreement is held unenforceable or in conflict with the law of any jurisdiction,
it .is the intention of the parties that the validity of the remaining 
provisions hereof shall not be effected by such holding./

           17.7.  Counterparts.  This Agreement may be executed in two or more 
counterparts, all of which together shall constitute a single instrument.


MOLECULAR BIOSYSTEMS, INC.        NYCOMED IMAGING, A.S.



By:                                                           By:


<TABLE> <S> <C>

<ARTICLE>                                                                 5
<LEGEND>
     This schedule  contains summary  financial  information  extracted from the
consolidated  financial statements of Molecular Biosystems,  Inc. dated December
31,  1995  and is  qualifed  in its  entirety  by  reference  to such  financial
statements.
</LEGEND>
<MULTIPLIER>                                                          1,000
       
<S>                                                       <C>
<PERIOD-TYPE>                                                         9-mos
<FISCAL-YEAR-END>                                               MAR-31-1996
<PERIOD-END>                                                    DEC-31-1995
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<SECURITIES>                                                         18,889
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                                                     0
                                                               0
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<SALES>                                                                 506
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</TABLE>


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