MIRAVANT MEDICAL TECHNOLOGIES
10-Q, 1998-08-14
PHARMACEUTICAL PREPARATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q


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



                  For the quarterly period ended June 30, 1998

                                       OR

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

                         Commission File Number: 0-25544
                          Miravant Medical Technologies
- --------------------------------------------------------------------------------
             (Exact name of Registrant as specified in its charter)


          Delaware                                          77-0222872
- --------------------------------------------------------------------------------
(State or other jurisdiction of               (IRS Employer Identification No.)
incorporation or organization)

             7408 Hollister Avenue, Santa Barbara, California 93117
- --------------------------------------------------------------------------------
          (Address of principal executive offices, including zip code)

                                 (805) 685-9880
- --------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)


         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. Yes |X| No |_|

         Indicate  the  number of  shares  outstanding  of each of the  issuer's
classes of common stock, as of the latest practicable date.

         Class                                   Outstanding at July 31, 1998
         -----                                   ----------------------------
Common Stock, $.01 par value                           13,980,683






<PAGE>





                                TABLE OF CONTENTS


                          PART I. FINANCIAL INFORMATION
<TABLE>
<CAPTION>
                                                                                               Page
                                                                                               ----

<S>                                                                                            <C>    
                                                          

Item 1.        Consolidated Financial Statements
               Consolidated balance sheets as of June 30, 1998 and
                    December 31, 1997..........................................................3
               Consolidated statements  of operations for the three months ended
                    June  30, 1998  and  1997,  and  for  the six  months  ended
                    June 30, 1998 and 1997.....................................................4
               Consolidated statements of cash flows for  the six  months  ended
                    June 30, 1998 and 1997.....................................................5
               Notes to consolidated financial statements .....................................6


Item 2         Management's Discussion and Analysis of Financial
                    Condition and Results of Operations .......................................9


                           PART II. OTHER INFORMATION


Item 4.        Submission of Matters to a Vote of Security Holders.............................14


Item 5.        Other Information...............................................................14


Item 6.        Exhibits and Reports on Form 8-K................................................14

               Signatures......................................................................15
                  
</TABLE>


<PAGE>


PART I. FINANCIAL INFORMATION




ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS

                                              MIRAVANT MEDICAL TECHNOLOGIES
                                               CONSOLIDATED BALANCE SHEETS
<TABLE>
<CAPTION>
                                                                                     June 30,           December 31,
                                                                                        1998                 1997
                                                                                 ------------------   ------------------
                                                                                     (Unaudited)
<S>                                                                             <C>                   <C>    

                                   Assets
Current assets:
   Cash and cash equivalents...............................................      $     26,909,000     $     55,666,000
   Investments in short-term marketable securities.........................            26,596,000           27,796,000
   Accounts receivable.....................................................               473,000            1,833,000
   Prepaid expenses and other current assets...............................               550,000              772,000
                                                                                 ------------------   ------------------
Total current assets.......................................................            54,528,000           86,067,000

Property, plant & equipment:
   Vehicles................................................................                28,000               28,000
   Furniture and fixtures..................................................             1,705,000            1,578,000
   Equipment...............................................................             4,274,000            3,752,000
   Leasehold improvements..................................................             4,059,000            3,071,000
   Capital lease equipment.................................................               184,000              184,000
                                                                                 ------------------   ------------------
                                                                                       10,250,000            8,613,000
   Accumulated depreciation and amortization...............................             4,129,000            2,886,000
                                                                                 ------------------   ------------------
                                                                                        6,121,000            5,727,000

Investments in affiliates..................................................             4,476,000              895,000
Loan to affiliate, net of reserve of $500,000 at June 30, 1998.............                    --                   --
Patents and other assets...................................................               987,000              342,000
                                                                                 ------------------   ------------------        
Total assets...............................................................      $     66,112,000     $     93,031,000
                                                                                 ==================   ==================

                   Liabilities and shareholders' equity 
Current liabilities:
   Accounts payable........................................................      $      3,883,000     $      4,290,000
   Accrued payroll and expenses............................................               724,000            1,022,000
   Current portion of capital lease obligations............................                 5,000               21,000
                                                                                 ------------------   ------------------
Total current liabilities..................................................             4,612,000            5,333,000

Shareholders' equity:
   Common stock, 50,000,000 shares authorized; 
   14,056,172 and 13,952,847 shares
   issued and outstanding at June 30, 1998 and 
   December 31, 1997, respectively........................................            164,129,000          170,451,000          
   Notes receivable from officers..........................................            (1,178,000)                  --
   Deferred compensation...................................................            (3,616,000)          (1,899,000)
   Accumulated deficit.....................................................           (97,835,000)         (80,854,000)
                                                                                 ------------------   ------------------
Total shareholders' equity.................................................            61,500,000           87,698,000
                                                                                 ------------------   ------------------         
Total liabilities and shareholders' equity.................................      $     66,112,000     $     93,031,000
                                                                                 ==================   ==================

See accompanying notes.
</TABLE>

<PAGE>




                          MIRAVANT MEDICAL TECHNOLOGIES
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

<TABLE>
<CAPTION>


                                                         Three months ended June 30,                Six months ended June 30,
                                                         1998                 1997                  1998               1997
                                                   ------------------- -----------------     -----------------  -----------------
<S>                                                <C>                 <C>                   <C>                <C>    

Revenues:
   Grants, licensing and royalty income........    $      1,331,000    $        433,000       $     1,966,000     $      724,000   
                                                   -----------------   -----------------      -----------------   -----------------
                                                          1,331,000             433,000             1,966,000            724,000
Costs and expenses:
   Research and development....................           8,346,000           4,364,000            14,664,000          8,230,000
   Selling, general and administrative.........           2,535,000           2,006,000             5,582,000          4,270,000
   Loss in investment in affiliate.............             441,000             240,000               895,000            472,000
                                                  -------------------   -----------------     -----------------  -----------------
Total costs and expenses.......................          11,322,000           6,610,000            21,141,000         12,972,000

Loss from operations...........................          (9,991,000)         (6,177,000)          (19,175,000)       (12,248,000)

Interest and other income (expense):
   Interest and other income...................             927,000             443,000             2,195,000          1,079,000
   Interest expense............................                  --              (2,000)               (1,000)            (4,000)
                                                  -------------------   -----------------      ----------------  ----------------- 
Total interest and other income................             927,000             441,000             2,194,000          1,075,000
                                                  -------------------   -----------------     -----------------  -----------------
Net loss.......................................   $      (9,064,000)    $    (5,736,000)          (16,981,000)    $  (11,173,000)  
                                                  ===================   =================      ================  ================= 
Net loss per share - basic and diluted.........   $           (0.64)    $         (0.46)                (1.20)    $        (0.90)  
                                                  ===================   =================      ================  =================
Shares used in computing net loss per share....          14,104,004          12,365,451            14,102,940         12,368,328
                                                  ===================   =================     =================  =================



See accompanying notes.
</TABLE>





<PAGE>


                                              MIRAVANT MEDICAL TECHNOLOGIES
                                          CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                       (Unaudited)

<TABLE>
<CAPTION>


                                                                                 Six months ended June 30,
Operating activities:                                                           1998                    1997
                                                                        -------------------   -----------------------
<S>                                                                     <C>                   <C>   
   Net loss..........................................................    $   (16,981,000)      $        (11,173,000)
   Adjustments to reconcile net loss to net cash used by operating
   activities:
      Depreciation and amortization..................................          1,309,000                    450,000
      Amortization of deferred compensation..........................          1,507,000                    611,000
      Reserve for loan receivable from affiliate.....................            500,000                         --
      Changes in operating assets and liabilities:
         Accounts receivable.........................................          1,360,000                  1,593,000
         Prepaid expenses and other assets...........................           (489,000)                  (676,000)
         Accounts payable and accrued payroll and expenses...........           (705,000)                  (138,000)
                                                                        -------------------   -----------------------          
   Net cash used in operating activities.............................        (13,499,000)                (9,333,000)

Investing activities:
   Purchases of marketable securities ...............................         (8,700,000)               (25,727,000)
   Sales of marketable securities ...................................          9,900,000                 25,000,000
   Investments in affiliates.........................................         (2,105,000)                   472,000
   Purchases of property, plant and equipment........................         (1,637,000)                  (586,000)
                                                                        -------------------   -----------------------
   Net cash used in investing activities.............................         (2,542,000)                  (841,000)

Financing activities:
   Proceeds from issuance of Common Stock, less issuance costs.......          2,930,000                    612,000
   Purchases of Common Stock.........................................        (13,952,000)                (4,316,000)
   Payments of executive officer notes...............................         (1,178,000)                        --
   Payments of loan to affiliate.....................................           (500,000)                        --
   Payments of capital lease obligations.............................            (16,000)                   (22,000)
   Payments of long term obligations.................................                  --                   (28,000)
                                                                       -------------------   -----------------------
   Net cash used in financing activities.............................        (12,716,000)                (3,754,000)

   Net decrease in cash and cash equivalents.........................        (28,757,000)               (13,928,000)
   Cash and cash equivalents at beginning of period..................         55,666,000                 31,498,000            
                                                                        -------------------   -----------------------         
   Cash and cash equivalents at end of period........................    $    26,909,000       $         17,570,000
                                                                        ===================   =======================

Supplemental disclosures:
   Cash paid for: 
                                
     State taxes.....................................................    $       111,000       $             80,000
                                                                        ===================   =======================              
     Interest .......................................................    $         1,000       $              5,000
                                                                        ===================   =======================
   Non-cash investing activities:

    Investment in affiliate from issuance of Common Stock............    $     1,476,000       $                 --
                                                                        ===================   =======================

See accompanying notes.

</TABLE>







<PAGE>








                          MIRAVANT MEDICAL TECHNOLOGIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS



1.    Basis of Presentation

      The information contained herein has been prepared in accordance with Rule
      10-01 of Regulation  S-X. The  information  at June 30, 1998,  and for the
      three and six month periods ended June 30, 1998 and 1997, is unaudited. In
      the  opinion of  management,  the  information  reflects  all  adjustments
      necessary to make the results of operations for the interim periods a fair
      statement  of  such  operations.  All  such  adjustments  are of a  normal
      recurring  nature.  Interim  results  are not  necessarily  indicative  of
      results for a full year.  For a  presentation  including  all  disclosures
      required by generally  accepted  accounting  principles,  these  financial
      statements  should be read in  conjunction  with the audited  consolidated
      financial  statements for the year ended December 31, 1997 included in the
      Miravant  Medical  Technologies  Annual Report on Form 10-K filed with the
      Securities and Exchange Commission.

2.    Accounting Policies

      Investments in Affiliates

      Investments in  affiliates,  owned more than 20% but not in excess of 50%,
      where  the  Company  is not  deemed  to be  able to  exercise  controlling
      influence,   are  recorded  under  the  equity   method.   Investments  in
      affiliates, owned less than 20% where the Company is not deemed to be able
      to exercise  controlling  influence,  are recorded  under the cost method.
      Under the equity method,  investments are carried at acquisition  cost and
      adjusted  for the  proportionate  share  of the  affiliates'  earnings  or
      losses. Under the cost method, investments are carried at acquisition cost
      and written  down only to the extent  dividends  received are in excess of
      cumulative  share of  earnings or if a  significant  decline in the market
      value of the investment is determined to be other than temporary.

      In December  1996,  the Company  purchased a 33% equity  interest in Ramus
      Medical  Technologies  ("Ramus") for $2 million.  The Company has recorded
      100% of Ramus' loss to the extent of the  investment  made by the Company.
      Under the accounting  policy noted above, the investment in Ramus has been
      fully  offset by their  losses  as of June 30,  1998 and was  $895,000  at
      December 31, 1997.

3.    Investments in Affiliates

      In June  1998,  the  Company  purchased  a 9%  equity  interest  in Xillix
      Technologies Corp.  ("Xillix") for $5 million.  The investment was made in
      the form of $3  million  in cash and $2  million  in  restricted  Miravant
      Common Stock at a premium price to current market. The investment recorded
      in the consolidated  financial  statements of $4.5 million represents cash
      of $3 million and the fair market  value on the date of the  agreement  of
      58,909  shares of Common  Stock of $25.06 per share or $1.5  million.  The
      investment  will be accounted  for under the cost method.  In  conjunction
      with the investment,  the Company also entered into an exclusive strategic
      alliance   agreement  with  Xillix  to  co-develop   proprietary   systems
      incorporating  PhotoPoint(TM) and Xillix's fluorescence imaging technology
      for diagnosing and treating early stage cancer and pre-malignant  tissues.
      The agreement provides that both companies will own co-developed  products
      and will share the  research and  development  costs  associated  with the
      development  program.  Xillix will  receive  drug  royalty  payments  from
      Miravant based on the sale of the Company's drugs used in conjunction with
      the co-developed technology.

 4.   Loan to Affiliate

      In April 1998, the Company entered into a revolving  credit agreement with
      its  affiliate,  Ramus,  pursuant to which the Company,  at the request of
      Ramus,  shall  from  time to time  make  loans to  Ramus  in an  aggregate
      outstanding principal amount not exceeding at any one time $2 million. The
      unpaid principal amount of the loans,  which are to be used to fund Ramus'
      clinical trial and operating  costs,  accrues  interest at a variable rate
      (7.35% as of June 30, 1998) based on the Company's  bank rate, and matures
      approximately  one and a half years after the  completion  by Ramus of its
      first surgical implant in a human involving coronary artery bypass surgery
      in a formally  conducted  clinical  trial.  The loans are  evidenced  by a
      promissory  note, the balance of which shall be convertible  under certain
      circumstances  at the option of the Company  into  shares of Ramus  stock.
      Additionally,  under the terms of the revolving  credit agreement and upon
      the  occurrence of specified  milestones,  the Company issued a warrant to
      purchase  10,000  shares  of the  Company's  Common  Stock  to  the  Chief
      Executive  Officer of Ramus at a price equal to the average  closing price
      of the Common Stock over the twenty  consecutive  trading days immediately
      prior to the date of  issuance.  As of June 30,  1998,  Ramus had borrowed
      $500,000 under the revolving credit agreement. The Company has established
      a reserve for the entire  outstanding  balance of the loan  receivable  at
      June 30, 1998.

5.    Shareholders' Equity

      Effective June 30, 1998, the Company  entered into an Amendment  Agreement
      with the  purchasers  of  900,000  shares  under the  Securities  Purchase
      Agreement dated  September 22, 1997.  Included among the provisions of the
      Amendment  Agreement is a change in the price protection  provisions which
      originally  required the Company to issue additional shares or pay cash to
      the purchasers to the extent that the 30 day average  closing price of the
      Company's  Common  Stock  prior to  September  22,  1998 was less than the
      original $50.00 per share purchase price.  Under the Amendment  Agreement,
      the Company's obligation under the price protection provisions relating to
      the 900,000 shares is now spread out over an eight month period  beginning
      August  1,  1998  and  ending  March 1,  1999,  and is  determined  by the
      difference  between  the  original  purchase  price and the 30 day average
      closing  bid price of the  Common  Stock on the  first  day of each  month
      beginning  August 1 and ending March 1 (each a  "measurement  date").  The
      total number of additional shares that can be issued to fulfill this price
      protection  obligation  has  been  limited  to  900,000  shares  with  any
      remaining balance to be paid in cash.  Additionally,  the Company also has
      the option to repurchase  all or a part of the  purchasers'  shares at the
      original  closing price of $50.00 per share and thus  eliminate all of the
      purchasers' rights, including the price protection provisions,  under both
      the Amendment Agreement and the Securities Purchase Agreement.

      Under the Amendment Agreement, the exercise price of the original warrants
      issued to these  purchasers  under the Securities  Purchase  Agreement has
      been  reduced  to $35.00  and under  certain  limited  circumstances,  the
      Company  has the right to redeem the  warrants.  Furthermore,  the lock-up
      agreement was amended to provide that,  if the Company does not repurchase
      the Common Stock,  1/8th of the shares and original warrant shares will be
      released from the lock up on each  measurement  date. In addition,  if the
      Company does not repurchase all of the purchasers' original 900,000 shares
      within  sixty (60) days of the  closing of the  Amendment  Agreement,  the
      Company  has  agreed  to  issue  an  additional  450,000  warrants  to the
      purchasers  at an exercise  price of $35.00 per share within five business
      days of March 1, 1999 or the earlier termination of the lock-up agreement.

6.    Per Share Data

      The Company has adopted  Statement of Financial  Accounting  Standards No.
      128 "Earnings per Share" ("SFAS No.  128"),  which  supersedes  Accounting
      Principles  Board  Opinion No. 15 and which is  effective  for all periods
      ending after December 31, 1997. SFAS No. 128 replaced the  presentation of
      primary  and fully  diluted  earnings  per share  with  basic and  diluted
      earnings per share.  Unlike primary earnings per share, basic earnings per
      share excludes any dilutive  effects of options,  warrants and convertible
      securities.  Diluted  earnings per share is very similar to the previously
      reported  fully  diluted  earnings per share and  reflects  the  potential
      dilution that would occur if securities or other contracts to issue common
      stock were exercised or converted to common stock. Common stock equivalent
      shares  from stock  options  and  warrants  have been  excluded  from this
      computation  as  their  effect  is  antidilutive.  All  previously  stated
      earnings per share amounts conform to the new SFAS No. 128 requirements.

      Basic loss per common share for the quarters  ended June 30, 1998 and 1997
      were  computed by dividing  the net loss by the  weighted  average  shares
      outstanding  during the period in accordance  with SFAS No. 128. Since the
      effect of the  assumed  exercise of stock  options  and other  convertible
      securities was antidilutive, basic and diluted loss per share as presented
      on the consolidated statements of operations are the same.

7.    Subsequent Events

      Common Stock Purchase Commitment

      On July 28, 1998, in accordance  with the Amendment  Agreement  dated June
      30, 1998, the Company  repurchased the 225,000 shares subject to the price
      protection provisions of the Amendment Agreement for both the August 1 and
      September  1, 1998  measurement  dates.  This  repurchase  eliminated  the
      Company's  obligation  to issue  additional  shares or pay cash  under the
      amended  price  protection  provisions  with  respect  to the  repurchased
      shares.  Although  the  Company  maintains  the  right,  it  is  under  no
      obligation nor has it notified the parties of its intent to repurchase any
      or all of the remaining shares.  The repurchased shares will be retired by
      the Company.

      Lease Commitment

      In July 1998, the Company  entered  into a lease for approximately  27,400
      square feet of  primarily  office  space.  The current  base rent for this
      lease is  approximately  $34,250 per month.  The lease  expires in October
      2003 and provides for rent to be adjusted  annually  based on increases in
      the  consumer  price index.  The lease also  provides the Company with the
      ability to sublet all or a portion of the property. The leased property is
      located in a business park and is subject to a master lease.


<PAGE>



ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
         CONDITION AND RESULTS OF OPERATIONS

         The  following  discussion  should  be read  in  conjunction  with  the
consolidated  financial  statements and notes thereto.  This Quarterly Report on
Form 10-Q may be deemed to include forward looking statements within the meaning
of Section 27A of the  Securities  Act of 1933 and Section 21E of the Securities
Exchange  Act of 1934 that involve risk and  uncertainty,  including  financial,
clinical, business environment and trend projections.  Although Miravant Medical
Technologies  (the  "Company")  believes  that  its  expectations  are  based on
reasonable  assumptions,  it can  give  no  assurance  that  its  goals  will be
achieved.  The  important  factors  that could  cause  actual  results to differ
materially from those in the forward looking statements herein include,  without
limitation, the early stage of development of both the Company and its products,
the timing and uncertainty of results of both research and regulatory processes,
the extensive government  regulation  applicable to the Company's business,  the
unproven  safety and efficacy of the  Company's  drug and device  products,  the
Company's  significant  additional  financing  requirements,  the uncertainty of
future capital funding, the highly competitive  environment of the international
pharmaceuticals  and medical  device  industries and the presence of a number of
competitors with significantly greater financial,  technical and other resources
and extensive operating  histories,  the Company's potential exposure to product
liability or recall,  uncertainties  relating to patents and other  intellectual
property,  including  whether the Company will obtain  sufficient  protection or
competitive advantage therefrom,  the Company's dependence upon a limited number
of key personnel and consultants,  the Company's  significant  reliance upon its
collaborative  partners for achieving its goals,  and other factors  detailed in
the Company's report on Form 10-K for the year ended December 31, 1997.

General

         Since its inception,  the Company has been  principally  engaged in the
research  and  development  of drugs  and  medical  device  products  for use in
PhotoPoint, the Company's proprietary technologies for photodynamic therapy. The
Company has been  unprofitable  since its founding and has incurred a cumulative
net loss of approximately $97.8 million as of June 30, 1998. The Company expects
to continue to incur  substantial and increasing  operating  losses for the next
several  years  due  to  continued  and  increased   spending  on  research  and
development  programs,  the  funding of  preclinical  and  clinical  testing and
regulatory  activities  and  the  costs  of  manufacturing,   marketing,  sales,
distribution and administrative activities.

         The Company's revenues  generally  primarily reflect income earned from
licensing  agreements,  grants and  license  royalties  from the sale of medical
device  products.  For the quarter ended June 30, 1998,  the Company's  revenues
were generated  from clinical  reimbursements,  royalties from device  licensing
agreements and revenue from grants. To date, the Company has received no revenue
from the sale of drug  products,  and the Company is not  permitted to engage in
commercial  sales of drugs or devices  until such time,  if ever, as the Company
receives  requisite  regulatory  approvals.  As a result,  the Company  does not
expect to record significant product sales until such approvals are received.

         Until the Company  commercializes  its product(s),  the Company expects
revenues to continue to be  attributable  to  licensing  agreements,  grants and
license  royalties  from  the  sale of  medical  device  products.  The  Company
anticipates  that future  revenues  and results of  operations  may  continue to
fluctuate  significantly  depending  on,  among  other  factors,  the timing and
outcome of applications for regulatory approvals, the continued support from its
collaborative  partners,  the  Company's  ability to  successfully  manufacture,
market and distribute its drug and device products and/or the  establishment  of
collaborative arrangements for the manufacturing,  marketing and distribution of
its products.  The Company  anticipates its operating  activities will result in
substantial net losses for several more years.


<PAGE>


         The Company is  currently  conducting  clinical  trials in oncology and
ophthalmology. In dermatology, the Company is investigating topical formulations
of its photoselective drugs. Based upon the outcome of these studies and various
economic  and  development  factors,   including  cost,  reimbursement  and  the
available  alternative  therapies,  the  Company may or may not elect to further
develop PhotoPoint procedures in oncology, ophthalmology,  dermatology or in any
other indications.

         In June 1998,  the Company and Pharmacia & Upjohn,  Inc.  ("Pharmacia &
Upjohn")  amended the  development  and funding  provisions of their  previously
executed  Purlytin(TM)  license  agreements  discussed below.  Under the amended
ophthalmology  agreement,  the Company  will  conduct all  preclinical  and U.S.
clinical   trials  and  will  be  reimbursed  by  Pharmacia  &  Upjohn  for  all
out-of-pocket  expenses  incurred,  provided  that the trials are  conducted  in
accordance with the agreement. Pharmacia & Upjohn will conduct all international
clinical trials in ophthalmology.  Under the amended agreement for the fields of
oncology and urology,  the Company  will  conduct all  preclinical  and clinical
trials and will  receive up to $20 million  over the next two years,  to be paid
quarterly,  for the  reimbursement of direct and indirect costs incurred and the
achievement  of  specified  milestones.  Under both of the  amended  agreements,
Pharmacia & Upjohn will also pay the Company royalties on product sales.

         The Company has  awarded,  and may award in the future,  stock  options
that  vest  upon  the  achievement  of  certain  milestones.   Under  Accounting
Principles  Board Opinion No. 25 ("APB No. 25"),  such options are accounted for
as variable  stock options.  As such,  until the milestone is achieved (but only
after it is determined to be probable),  deferred compensation is recorded in an
amount equal to the difference between the fair market value of the Common Stock
on the date of determination less the option exercise price and is adjusted from
period to period to reflect  changes in the  market  value of the Common  Stock.
Deferred  compensation,  as it relates to a particular  milestone,  is amortized
over the period between when  achievement of the milestone  becomes probable and
when the  milestone  is  estimated  to be  achieved.  Amortization  of  deferred
compensation could result in significant  additional  compensation expense being
recorded in future  periods  based on the market  value of the Common Stock from
period to period.

         Effective  June 21, 1996,  the  Compensation  Committee of the Board of
Directors adjusted the future vesting periods of variable stock options covering
400,000  shares of Common Stock.  These  variable stock options were adjusted to
change the vesting periods to specific dates as opposed to the original  vesting
periods which were based upon the achievement of milestones;  no change was made
to the  exercise  prices of these  variable  stock  options.  This change in the
vesting  periods  provides for the options to be accounted  for as  non-variable
options and therefore alleviates the impact of deferred compensation fluctuating
in future  periods based on changes in the per share market value from period to
period.  As of June 30, 1998,  options  covering 302,500 shares with an exercise
price of $34.75 per share have vested and options  covering  75,000  shares have
been canceled. The remaining unvested shares will vest in the years 1998 through
2000.

         In  December  1997,  the  Company  provided  equity  loans  to  certain
executive  officers  to be used to  exercise  options to acquire  the  Company's
Common Stock and pay for the related  option  exercise  price and payroll taxes.
The notes  accrue  interest at a fixed  rate,  are payable in five years and are
collateralized by the underlying shares acquired upon exercise. Under APB No. 25
and related  interpretations,  such notes are  required to be  accounted  for as
deferred compensation. The deferred compensation is determined as the difference
between the fair market value of the Common  Stock on the date of exercise  less
the option exercise price. As of June 30, 1998, the deferred  compensation  will
be amortized over the five-year term of the notes at $135,000 per quarter.



<PAGE>


Results of Operations

         The following table provides a summary of  the  Company's  revenues for
the three and six months ended June 30, 1998 and 1997:

<TABLE>
<CAPTION>

                                        Three months ended June 30,                 Six months ended June 30,
                                        1998                1997                    1998                 1997
                                   -----------------   ------------------      -----------------    -----------------
<S>                                <C>                 <C>                     <C>                  <C>    

Consolidated Revenues
- ---------------------                                                                            
                        
Grants and contracts...........    $      197,000      $            --          $     338,000       $         --               
Royalties......................            84,000               58,000                133,000            124,000
License........................         1,050,000              375,000              1,495,000            600,000
                                   -----------------   -----------------        -----------------   -----------------  
                                            
Total revenue.................     $    1,331,000      $       433,000          $   1,966,000       $    724,000               
                                   =================   =================        =================   =================

</TABLE>


         Revenues.  For the three months ended June 30, 1998, revenues increased
to $1.3  million from  $433,000 for the three months ended June 30, 1997.  Total
revenues  for the six months  ended June 30, 1998  increased  to $2.0 million as
compared to $724,000  for the same period in 1997.  The increase in revenues for
both the three and six month  periods  ending  June 30,  1998 is  related  to an
increase in license  revenues  which  represents  the  billing for the  specific
reimbursement of clinical costs in connection with the license agreement entered
into in July 1995 with  Pharmacia & Upjohn.  In addition,  the Company  recorded
$197,000 and $338,000 for the three and six month  periods  ended June 30, 1998,
respectively,  associated  with two on-going  grants  initially  received in the
third quarter of 1997.  There were no active  grants or grant  revenue  recorded
during  the first six  months of 1997.  Under  the  amended  license  agreements
entered into in June 1998 with  Pharmacia  and Upjohn,  the Company  anticipates
recording  license  income for the  specific  reimbursement  of  clinical  costs
throughout 1998 and beyond. The level of such license,  grant and royalty income
is likely to  fluctuate  materially  from  period  to period  and in the  future
depending  on the amount of  clinical  costs  incurred  and/or  reimbursed,  the
achievement  of milestones and the extent of  development  activities  under the
amended  Pharmacia  & Upjohn  license  agreements,  the  amount of grant  income
awarded  and  expended  and the amount of device  products  sold by  Laserscope,
pursuant to a license  agreement  entered into in 1992 which provides  royalties
from the sale of the Company's previously designed device products.

         Research  and  Development.  The  Company's  research  and  development
expenses for the three months ended June 30, 1998 increased to $8.3 million from
$4.4 million for the three months ended June 30, 1997.  Research and development
expenses for the six months ended June 30, 1998  increased to $14.7 million from
$8.2 million for the six months  ended June 30,  1997.  The increase in research
and  development  expenses  relates  primarily  to  costs  associated  with  the
screening,  treatment and monitoring of qualified  individuals  participating in
clinical trials,  the preparation of the documentation for clinical trials,  and
the  preclinical  work  associated  with the  development  of  existing  and new
compounds,  formulations  and  clinical  programs.  In  addition,  research  and
development  expenses  continue to increase in  conjunction  with the  Company's
progression  through the various stages of preclinical  and clinical  trials and
the increased  costs  associated with the purchase of raw materials and supplies
for the  production of clinical  devices and drugs for use in these trials.  The
Company anticipates future research and development  expenses to increase as the
Company  continues its clinical trials in ophthalmology and oncology and expands
its research and development  programs,  which includes the increased  hiring of
personnel and  continued  expansion of  preclinical  and clinical  testing.  See
"--General."


         Selling, General and Administrative. The Company's selling, general and
administrative  expenses for the three  months ended June 30, 1998  increased to
$2.5 million  from $2.0 million for the three months ended June 30, 1997.  Total
selling,  general  and  administrative  costs for the  first six  months of 1998
increased  to $5.6  million as compared  to $4.3  million for the same period in
1997. The increase in selling,  general and administrative expenses for both the
three and six month periods ending June 30, 1998 as compared to the same periods
in 1997 are a result of (i) the increase in costs  associated with  professional
services received from financial  consultants,  attorneys,  and public and media
relations  and  (ii)  payroll  and  overhead   costs  due  to  the  addition  of
administrative  and corporate  personnel.  The Company  expects future  selling,
general  and  administrative  expenses  to  continue  to grow as a result of the
increased support required for research and development  activities,  continuing
corporate development and professional services, compensation expense associated
with stock options and financial  consultants and general corporate matters,  as
well as the other factors described above.

         Loss in Investment  in  Affiliate.  For the three months ended June 30,
1998  and  1997,  the  Company   recorded  as  expense  $441,000  and  $240,000,
respectively,  in connection  with its investment in Ramus in December 1996. For
the six months  ended June 30,  1998 the  Company  recorded  $895,000 as expense
related to Ramus as compared to $472,000 for the six months ended June 30, 1997.
The amounts  recorded as expense in 1998 and 1997  represent  the full amount of
the  affiliate's  losses  for  the  respective  periods  to  the  extent  of the
investment  made in Ramus.  Ramus'  losses from  operations  are  expected to be
ongoing throughout 1998 and beyond, and the level of such losses are expected to
fluctuate  depending on research and development  activities and preclinical and
clinical trial progress. However, as the investment in Ramus has been completely
reduced as of June 30, 1998, under the equity method of accounting,  the Company
will  not  record  any  further  losses  incurred  by  Ramus  unless  additional
investments are made.

         Interest  and Other  Income.  For the three months ended June 30, 1998,
net interest and other income increased to $927,000 compared to net interest and
other income of $441,000  for the three  months  ended June 30, 1997.  Total net
interest and other  income for the six months  ended June 30, 1998  increased to
$2.2  million as  compared  to $1.1  million  for the same  period in 1997.  The
increase  in net  interest  and  other  income  for both the three and six month
periods in 1998 resulted primarily from the investment of proceeds received from
the Company's private equity offering in September 1997.  Additionally,  for the
six month period in 1998, the Company also recorded as other income  $152,000 as
a  transaction  fee for the  guaranty  of a loan  to one of its  directors.  The
transaction fee was paid in the form of the Company's Common Stock which will be
retired.

         The Company does not believe that  inflation has had a material  impact
on its results of operations.


Liquidity and Capital Resources

         Since  inception  through June 30, 1998, the Company has  accumulated a
deficit  of  approximately  $97.8  million  and  expects  to  continue  to incur
substantial  and increasing  operating  losses for the next several  years.  The
Company has financed its  operations  primarily  through  private  placements of
common and preferred stock,  private  placements of convertible  notes and short
term notes, its initial public offering, Pharmacia & Upjohn's purchase of Common
Stock and a secondary  public  offering.  As of June 30,  1998,  the Company had
received  proceeds from the sale of equity  securities and convertible  notes of
approximately $181.5 million. The Company has available a $1.0 million bank line
of credit which has a variable rate of interest based on the bank's lending rate
(7.35%  as of June  30,  1998),  which  expires  on  January  31,  1999,  and is
collateralized by the Company's cash balances. The credit agreement subjects the
Company  to certain  customary  restrictions,  including  a  prohibition  on the
payment of dividends.  The Company presently has no outstanding borrowings under
the bank line of credit.

         In connection with the licensing agreement with Pharmacia & Upjohn, the
Company has recorded as license  income the  reimbursement  of clinical costs of
$1.5 million for the six months ended June 30, 1998.  Under the amended  license
agreements  entered  into with  Pharmacia  & Upjohn in June  1998,  the  Company
anticipates recording license income for the specific  reimbursement of clinical
costs throughout the remainder of 1998 and beyond.


         In June 1998, the Company purchased a 9% equity interest in Xillix. The
investment  was made in the form of $3 million cash and $2 million in restricted
shares of the Company's  Common Stock valued at a premium to market.  The shares
(58,909) had a fair market value of $1.5 million on the date the  investment was
made.  In  addition to the  investment,  the  Company  entered  into a strategic
alliance agreement with Xillix to co-develop  proprietary systems  incorporating
the technology of each company and to share the research and development costs.

         Under the revolving  credit  agreement  entered into in April 1998 with
its  affiliate,  Ramus,  the Company has provided  Ramus with $500,000 of the $2
million  credit limit as of June 30, 1998. At the request of Ramus,  the Company
will continue, from time to time, to provide Ramus with additional amounts under
this agreement.

         For the  first  six  months  of 1998,  the  Company  required  cash for
operations of approximately  $13.5 million compared to $9.3 million for the same
period in 1997.  The increase in cash used in operations was primarily due to an
increase in operating  activities  associated  with the  continued  expansion of
preclinical  and clinical  testing,  the  increase in research  and  development
programs and  personnel,  the reduction of accounts  payable and the increase in
general  corporate  activities.  For the first six months of 1998,  the  Company
required cash from its financing  activities of  approximately  $12.7 million as
compared to $3.8 million for the same period in 1997.  The increase is primarily
related to the  repurchase  by the  Company  of its Common  Stock as well as the
issuance of executive  equity notes during the first three months of 1998.  This
increase was partially offset by proceeds  received from the exercise of options
and warrants.

         The Company  invested a total of $1.6  million in  property,  plant and
equipment  during the first six months of 1998  compared to $586,000  during the
same period in 1997. The increase is directly  related to costs incurred for the
expansion of the Company's  laboratory  and office space as well as the purchase
of  equipment  for this  space.  The  Company  expects to  continue  to purchase
property and equipment in the future as it expands its preclinical, clinical and
research and development  activities.  Since inception,  the Company has entered
into  capital  lease  agreements  for   approximately   $184,000  of  equipment,
consisting primarily of laboratory equipment. The Company expects to continue to
lease  equipment  from time to time as needed,  when and if financing  resources
become available at acceptable terms to the Company.

         The  Company's  capital  funding  requirements  will depend on numerous
factors,  including  the progress and  magnitude of the  Company's  research and
development  programs  and  preclinical  testing and clinical  trials,  the time
involved in  obtaining  regulatory  approvals,  the cost  involved in filing and
maintaining  patent  claims,  technological  advances,   competitor  and  market
conditions,  the ability of the Company to establish and maintain  collaborative
arrangements,  the cost of manufacturing scale-up and the cost and effectiveness
of commercialization activities and arrangements.

         The Company may require  substantial  funding to continue  its research
and development activities,  preclinical and clinical testing and manufacturing,
marketing,  sales,  distribution and  administrative  activities.  Additionally,
under the Amendment  Agreement  dated June 30, 1998 to the Company's  Securities
Purchase  Agreement  dated  September  22, 1997,  the Company may be required to
expend  substantial  funds to fulfill its obligations under the price protection
provisions.  Furthermore,  the Company may expend  significant  additional  cash
resources  to  repurchase  shares of it Common  Stock  under  the  Common  Stock
repurchase program  previously  approved by the Company's Board of Directors and
if it  exercises  its  option to  repurchase  its  shares  under  the  Amendment
Agreement.  The  Company  has  raised  funds in the past  through  the public or
private sale of securities,  and may raise funds in the future through public or
private  financings,  collaborative  arrangements  or from  other  sources.  The
success of such efforts will depend in large part upon  continuing  developments
in the Company's  preclinical  and clinical  testing.  The Company  continues to
explore  and,  as  appropriate,  enter into  discussions  with  other  companies
regarding  the  potential  for equity  investment,  collaborative  arrangements,
license  agreements or development or other funding programs with the Company in
exchange for manufacturing,  marketing, distribution or other rights to products
developed by the Company.  However,  there can be no assurance that  discussions
with other companies will result in any investments, collaborative arrangements,
agreements or funding, or that the necessary  additional  financing through debt
or equity financing will be available to the Company on acceptable  terms, if at
all.  Further,  there can be no assurance that any  arrangements  resulting from
these discussions will successfully  reduce the Company's funding  requirements.
If additional  funding is not available to the Company when needed,  the Company
will  be  required  to  scale  back  its  research  and  development   programs,
preclinical and clinical testing and administrative activities and the Company's
business and  financial  results and  condition  would be  materially  adversely
affected.



<PAGE>




PART II. OTHER INFORMATION

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

On June 10,  1998,  the Company  held its Annual  Meeting of  Stockholders.  The
following individuals were elected to the Board of Directors:

                                         Votes               Votes 
                                          For              Withheld
                                    ---------------      ---------------
      Charles T. Foscue               10,875,964             23,848
      Gary S. Kledzik, Ph.D.          10,875,964             23,848
      David E. Mai                    10,875,964             23,848
      Donald K. McGhan                10,430,731            469,081
      Raul E. Perez, M.D.             10,877,526             22,286
      Jonah Shacknai                  10,877,526             22,286

In addition, the shareholders also approved the following proposal:
<TABLE>
<CAPTION>



                                                            Votes               Votes                                   Broker
                                                            For                 Against          Abstained            Non-Votes
                                                       --------------      --------------      --------------      ----------------
<S>                                                    <C>                 <C>                 <C>                 <C>    
1.   Proposal  to  ratify  the   selection  of
     the  Company's independent auditors.                10,882,997             1,315              15,500                 0
     

</TABLE>

ITEM 5.  OTHER INFORMATION

                  Notice of any shareholder proposal intended to be presented at
                  the Company's 1999 Annual Meeting of Shareholders  that is not
                  submitted  to the  Company  pursuant to SEC Rule 14a-8 will be
                  considered  untimely  if not  received  by the  Company  on or
                  before March 24, 1999.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

                  (a)      Exhibits.
                           See Exhibit Index on page 16.


                  (b)      Reports on Form 8-K.

                           Form 8-K dated June 30, 1998,  Other Events - Item 5:
                           announcing   that  the   Company   had   amended  the
                           Securities  Purchase  Agreement  dated  September 22,
                           1997.



<PAGE>




                                   SIGNATURES

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


                                   Miravant Medical Technologies





Date:    August 13, 1998           By:  /S/ John M. Philpott
                                        ------------------------
                                        John M. Philpott
                                        Chief Financial Officer and Controller
                                        (on behalf of the Company and as
                                        Principal Financial Officer and
                                        Principal Accounting Officer)




<PAGE>


<TABLE>
<CAPTION>


                                                    INDEX TO EXHIBITS
                                                                                                           Incorporating
Exhibit                                                                                                    Reference
Number                                                Description                                          (if applicable)
- ------                                                -----------                                          ---------------
<S>                                                                                                        <C>    


3.1           Certificate  of Amendment of the Restated  Certificate of  Incorporation  of the Registrant
              filed with the Delaware Secretary of State on September 12, 1997.                            [E][3.1]
3.2           Certificate  of Amendment of the Restated  Certificate of  Incorporation  of the Registrant  [C][3.11]
              filed with the Delaware Secretary of  State on  July 24, 1995.
3.3           Restated  Certificate of Incorporation of the Registrant filed with the Delaware  Secretary  [B][3.1]
              of State on December 14, 1994.
3.4           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.2]
              the Delaware Secretary of State on March 17, 1994.
3.5           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.3]
              the Delaware Secretary of State on October 7, 1992.
3.6           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.4]
              the Delaware Secretary of State on November 21, 1991.
3.7           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.5]
              the Delaware Secretary of State on September 27, 1991.
3.8           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.6]
              the Delaware Secretary of State on December 20, 1989.
3.9           Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.7]
              the Delaware Secretary of State on August 11, 1989.
3.10          Certificate of Amendment of the Certificate of  Incorporation  of the Registrant filed with  [A][3.8]
              the Delaware Secretary of State on July 13, 1989.
3.11          Certificate of Incorporation  of the Registrant filed with the Delaware  Secretary of State  [A][3.9]
              on June 16, 1989.
3.12          Amended and Restated Bylaws of the Registrant.                                               [E][3.12]
4.1           Specimen Certificate of Common Stock.                                                        [B][4.1]
4.2           Form of Convertible Promissory Note.                                                         [A][4.3]
4.3           Form of Indenture.                                                                           [A][4.4]
4.4           Special Registration Rights Undertaking.                                                     [A][4.5]
4.5           Undertaking Agreement dated August 31, 1994.                                                 [A][4.6]
4.6           Letter Agreement dated March 10, 1994.                                                       [A][4.7]
4.7           Form of $10,000,000 Common Stock and Warrants Offering Investment Agreement.                 [A][4.8]
4.8           Form of $55 Common Stock Purchase Warrant.                                                   [D][4.1]
4.9           Form of $60 Common Stock Purchase Warrant.                                                   [D][4.2]
4.10          Form of $35 Amended and Restated Common Stock Purchase Warrant.                              [F][4.1]
4.11          Form of Additional $35 Common Stock Purchase Warrant.                                        [F][4.2]
4.12          Warrant to Purchase  10,000  Shares of Common Stock between the  Registrant  and Charles S.
              Love.*
10.1          Amended  and  Restated  Development  and  Commercial  Supply  Agreement  dated June 8, 1998
              between the Registrant and Pharmacia & Upjohn Co.*
10.2          Amended and  Restated  Development  and License  Agreement  dated June 8, 1998  between the
              Registrant and Pharmacia & Upjohn S.p.A.*
10.3          Amended and Restated  Ophthalmology  Development  and License  Agreement dated June 8, 1998
              between the Registrant and Pharmacia & Upjohn AB.*
10.4          Right of First Refusal  Agreement dated June 8, 1998 between the Registrant and Pharmacia &
              Upjohn, Inc.*
10.5          Credit   Agreement   dated  April  1,  1998  between  the   Registrant  and  Ramus  Medical
              Technologies.*
10.6          Convertible  Promissory  Note dated April 1, 1998 between the  Registrant and Ramus Medical
              Technologies.*
10.7          Strategic  Alliance  Agreement  dated  June 2,  1998  between  the  Registrant  and  Xillix
              Technologies Corp.*
10.8          Subscription  Agreement  relating  to the  Registrant's  Common  Stock  dated  June 2, 1998
              between the Registrant and Xillix Technologies Corp.
10.9          Subscription  Agreement  relating to Xillix's  Common  Stock dated June 2, 1998 between the
              Registrant and Xillix Technologies Corp.
11.1          Statement regarding computation of net loss per share.
27.1          Financial Data Schedule.

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

[A]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained  in the  Registrant's  Registration  Statement  on Form S-1
           (File No. 33-87138).
[B]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained  in  Amendment  No.  2  to  the  Registrant's  Registration
           Statement on Form S-1 (File No. 33-87138).
[C]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained in the  Registrant's  Form 10-Q for the quarter  ended June
           30, 1995, as amended on Form 10-Q/A dated  December 6, 1995 (File No.
           0-25544).
[D]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained  in the  Registrant's  Registration  Statement  on Form S-3
           (File No. 333-39905).
[E]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained  in the  Registrant's  Form  10-Q  for  the  quarter  ended
           September 30, 1997 (File No. 0-25544).
[F]        Incorporated  by reference  from the exhibit  referred to in brackets
           contained in the Registrant's  Form 8-K dated June 30, 1998 (File No.
           0-25544).
*          Confidential  portions  of this exhibit  have  been deleted and filed  
           separately  with the  Commission  pursuant to Rule  24b-2  under  the  
           Securities Exchange Act of 1934.

</TABLE>





                                    EXHIBIT C

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933 OR QUALIFIED  UNDER THE SECURITIES  LAWS OF ANY STATE, IN
RELIANCE ON EXEMPTIONS FROM SUCH  REGISTRATION AND  QUALIFICATION  FOR NONPUBLIC
OFFERINGS.  ACCORDINGLY,  THE  SALE,  TRANSFER  OR  OTHER  DISPOSITION  OF  SUCH
SECURITIES OR ANY PORTION  THEREOF MAY NOT BE  ACCOMPLISHED IN THE ABSENCE OF AN
EFFECTIVE   REGISTRATION  STATEMENT  UNDER  SUCH  ACT  AND  QUALIFICATION  UNDER
APPLICABLE STATE  SECURITIES LAWS, OR AN OPINION OF COUNSEL  SATISFACTORY TO THE
COMPANY TO THE EFFECT THAT SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.


WARRANT NO. ___                                                    _______, 19__

                WARRANT TO PURCHASE 10,000 SHARES OF COMMON STOCK
                        OF MIRAVANT MEDICAL TECHNOLOGIES


     Miravant  Medical  Technologies,  a Delaware  corporation  (the "Company"),
hereby  certifies that Charles S. Love (the "Holder"),  is entitled to purchase,
on the terms and  conditions  contained  herein,  10,000  shares  (the  "Warrant
Shares")  of the  Company's  common  stock,  $0.01 par value per share  ("Common
Stock"),  at the Fair Market  Value on the date hereof  ***** per Warrant  Share
(the  "Warrant  Purchase  Price")  at any time and from time to time  during the
Exercise Period (as such term is defined below).

         This Warrant is subject to the following terms and conditions:

***** Confidential Treatment Requested
<PAGE>



1. DEFINITIONS. For the purposes of this Warrant, the following terms shall have
the respective meanings set forth below:

     "Common  Stock"  shall have the meaning  set forth in the  preamble of this
     Warrant.
    
     "Company" shall have the meaning set forth in the preamble of this Warrant.
                 
     "Current  Market  Price" per share of Common  Stock shall  mean,  as of any
     specified date on which the Common Stock is publicly traded, the average of
     the  daily  market  prices of  the  Common  Stock over  the 20  consecutive
     trading days  immediately  preceding  (and not  including)  such date.  The
     "daily  market  price" for each such  trading  day shall be (i) the closing
     price on such day on the principal stock exchange on which the Common Stock
     is then listed or admitted to trading or on NASDAQ as  applicable,  (ii) if
     no sale takes place on such day on any such exchange or system, the average
     of the closing bid and asked prices  regular way on such day for the Common
     Stock as  officially  quoted on any such  exchange or system,  (iii) if the
     Common  Stock is not then  listed  or  admitted  to  trading  on any  stock
     exchange or system,  the last  reported  sale price regular way on such day
     for the Common Stock, or if no sale takes place on such day, the average of
     the  closing  bid and asked  prices  for the Common  Stock on such day,  as
     reported by NASDAQ or the National Quotation Bureau,  (iv) in the event the
     Common  Stock is not then listed or  admitted to trading on any  securities
     exchange  and if no such  reported  sale price or bid and asked  prices are
     available,  the average of the  reported  high bid and low asked  prices on
     such day, as reported by a reputable  quotation service,  or a newspaper of
     general  circulation  in the City of Los Angeles  customarily  published on
     each Business  Day. If the daily market price cannot be determined  for the
     20 consecutive  trading days immediately  preceding such date in the manner
     specified  in the  foregoing  sentence,  then the Common Stock shall not be
     deemed to be publicly traded as of such date.

     "Designated  Office"  shall  have  the  meaning  set  forth in  Section  2.

     "Exercise  Period"  shall  mean the period  commencing  on the date of this
     Warrant and ending on the Expiration Date. 

     "Expiration Date" shall mean ***** from the date of this Warrant.
                 

     "Fair  Market  Value" per share of Common  Stock as of any  specified  date
     shall mean (i) if the Common  Stock is  publicly  traded on such date,  the
     Current  Market Price per share or (ii) if the Common Stock is not publicly
     traded  on such  date,  the fair  market  value  per share of Common  Stock
     as  determined  in good faith by the Board of  Directors of the Company and
     set  forth in a written  notice  to the  Holder.  "Holder"  shall  have the
     meaning set forth in the preamble of this Warrant.

     "NASDAQ"  shall  mean  the  National  Association  of  Securities  Dealers'
     Automatic Quotation System, or any successor reporting system.
                 
     "Person" shall  mean  any  individual, sole  proprietorship,   partnership,
     joint   venture,   trust,   unincorporated    organization,    association,
     corporation,  limited liability  company,  limited  liability  partnership,
     institution,  public  benefit  corporation,  entity or government  (whether
     Federal,  state, county, city, municipal or otherwise,  including,  without
     limitation,  any instrumentality,  political  subdivision,  agency, body or
     department thereof).

     "Warrant  Purchase  Price" shall have the meaning set forth in the preamble
     of this Warrant (as adjusted in accordance with the terms of this Warrant).

     "Warrant"  shall  mean  this  Warrant,  any  amendment  of such  original
     Warrant, and any Warrant issued upon transfer,  division or combination of,
     or in  substitution  for, such original  Warrant or any other such Warrant.
     All Warrants shall at all times be identical as to terms and conditions and
     date,  except as to the  number of  Warrant  Shares  for which  they may be
     exercised.

     "Warrant  Shares"  shall have the meaning set forth in the preamble of this
     Warrant.

***** Confidential Treatment Requested
<PAGE>

 2. EXERCISE.

     2.1 Exercise;  Delivery of Certificates.  This Warrant may be exercised, at
the option of the Holder,  at any time and from time to time during the Exercise
Period, for all or any part of the Warrant Shares. This Warrant may be exercised
by  delivering  the  payment  of the  Warrant  Purchase  Price for the number of
Warrant Shares being purchased and concurrently surrendering this Warrant to the
Company at its principal  office (the  "Designated  Office"),  together with the
Form of Exercise  Subscription  attached  hereto duly completed and signed.  The
Warrant Shares purchased under this Warrant shall be and are deemed to be issued
to the Holder as the record  owner of such shares as of the close of business on
the date on which this  Warrant  shall have been  surrendered  and payment  made
therefor. Certificates for Warrant Shares so purchased shall be delivered to the
Holder within three Business Days after this Warrant has been exercised, and, in
case of a  purchase  of less than all of the  Warrant  Shares  purchasable  upon
exercise of this  Warrant,  the Company  shall cancel this  Warrant and,  within
three  Business  Days,  shall execute and deliver to the Holder a new Warrant of
like tenor for the  balance of the Warrant  Shares.  Each stock  certificate  so
delivered  shall be  registered  in the name of the Holder or such other name as
shall be designated by the Holder.

     2.2 Payment of Warrant Price.  Payment of the Warrant Purchase Price may be
made, at the option of the Holder (i) by certified or official bank check,  (ii)
by wire  transfer,  (iii) by  instructing  the Company to withhold  and cancel a
number of Warrant  Shares  then  issuable  upon  exercise of this  Warrant  with
respect to which the excess of the Fair Market  Value over the Warrant  Purchase
Price  for  such  cancelled  Warrant  Shares  is at least  equal to the  Warrant
Purchase Price for the shares being purchased,  (iv) by surrender to the Company
of shares of Common Stock  previously  acquired by the Holder with a Fair Market
Value equal to the Warrant  Purchase Price for the shares being purchased or (v)
by any combination of the foregoing.

     2.3 No  Fractional  Shares.  The  Company  shall not be  required  to issue
fractional  shares of Common  Stock upon the  exercise of this  Warrant.  If any
fraction of a share of Common Stock  would,  except for the  provisions  of this
paragraph,  be issuable on the  exercise of this Warrant (or  specified  portion
thereof),  the Company shall pay to Holder an amount in cash calculated by it to
be equal to the then Fair Market Value per share of Common Stock  multiplied  by
such fraction computed to the nearest whole cent.

3.  ADJUSTMENTS  TO THE NUMBER OF WARRANT  SHARES  AND TO THE  WARRANT  PURCHASE
PRICE.  The number of Warrant Shares for which this Warrant is  exercisable  and
the Warrant  Purchase Price shall be subject to adjustment  from time to time as
set forth in this Section 3.

     3.1 Stock  Dividends,  Subdivisions  and  Combinations.  If at any time the
Company shall:
                  (a) pay a dividend or other  distribution  on its Common Stock
in  shares of Common  Stock or  shares of any other  class or series of  capital
stock,

                  (b)  subdivide its  outstanding  shares of Common Stock into a
larger number of shares of such Common Stock, or

                  (c) combine  its  outstanding  shares of Common  Stock  into a
smaller number of shares of such Common Stock, then the number of Warrant Shares
purchasable upon exercise of this Warrant  immediately  prior to the record date
for such dividend or distribution  or the effective date of such  subdivision or
combination  shall  be  adjusted  so  that  the  Holder  of this  Warrant  shall
thereafter  be entitled to receive  upon  exercise of this  Warrant the kind and
number of shares of Common  Stock that such Holder would have owned or have been
entitled to receive  immediately  after such record date or  effective  date had
this Warrant been exercised  immediately  prior to such record date or effective
date.  An  adjustment  made  pursuant to this Section 3 shall  become  effective
immediately  after the effective  date of such event,  but be retroactive to the
record date, if any, for such event. 3.2 Rights;  Options;  Warrants.  If at any
time the  Company  shall issue  (without  payment of any  consideration)  to all
holders of outstanding Common Stock rights, options or warrants to subscribe for
or  purchase  shares  of  Common  Stock  or  securities   convertible   into  or
exchangeable  for Common  Stock,  then the Company  shall also  distribute  such
rights,  options,  warrants or  securities  to the Holders of this Warrant as if
this Warrant had been  exercised  immediately  prior to the record date for such
distribution.

4.       MISCELLANEOUS.

     4.1 Restrictive Legend.  This Warrant,  any warrant issued upon transfer of
this Warrant and any Warrant  Shares issued upon exercise of this Warrant or any
portion thereof shall be imprinted with the following legend, in addition to any
legend required under applicable state securities laws:

          THE  SECURITY  REPRESENTED  HEREBY HAS NOT BEEN  REGISTERED  UNDER THE
          SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES
          LAW. THIS SECURITY MAY NOT BE SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED
          OR OTHERWISE  ASSIGNED,  EXCEPT IN  COMPLIANCE  WITH THE  REGISTRATION
          REQUIREMENTS OF SUCH ACT AND ALL APPLICABLE STATE SECURITIES LAWS.

          The  legend  shall  be   appropriately   modified   upon  issuance  of
          certificates for shares of Common Stock.

          Upon request of the Holder of such a  certificate,  the Company  shall
          issue to such Holder a new certificate  free of the foregoing  legend,
          if, with such request, the Holder provides the Company with an opinion
          of counsel stating that the securities  evidenced by such  certificate
          can be sold  under  Rule  144 or a  similar  Rule  permitting  resales
          without  restriction. 

     4.2 Other Covenants.  The Company covenants and agrees that, as long as any
Warrant  Shares are issuable with respect to outstanding  Warrants,  the Company
will  perform all of the  following  covenants  for the  express  benefit of the
Holder of the Warrant Shares:  (a) the Warrant Shares shall,  upon issuance,  be
duly authorized,  validly issued,  fully paid and nonassessable shares of Common
Stock;  (b) each  Holder  of a  Warrant  shall,  upon the  exercise  thereof  in
accordance  with the terms  hereof,  receive  good and  marketable  title to the
Warrant  Shares,  free and clear of all voting and other trust  arrangements  to
which the Company is a party or by which it is bound,  preemptive  rights of any
stockholder, liens, encumbrances, equities and claims whatsoever; and (c) at all
times prior to the Expiration Date, the Company shall have reserved for issuance
a sufficient  number of authorized but unissued shares of Common Stock, or other
securities or property for which this Warrant may then be exercisable, to permit
this Warrant (or if this Warrant has been divided, all outstanding  Warrants) to
be exercised in full. 

     4.3 No Voting  Rights;  Limitation  Of  Liability.  Except as expressly set
forth in this Warrant,  nothing  contained in this Warrant shall be construed as
conferring  upon the Holder (i) the right to vote or to consent as a stockholder
in respect of meetings of  stockholders  for the  election of  directors  of the
Company or any other matter,  (ii) the right to receive  dividends except as set
forth in Section 3, or (iii) any other rights as a  stockholder  of the Company.
No  provisions  hereof,  in the absence of  affirmative  action by the Holder to
purchase shares of Common Stock, and no mere enumeration herein of the rights or
privileges  of the Holder,  shall give rise to any  liability of such Holder for
the Warrant  Purchase  Price or as a  stockholder  of the Company,  whether such
liability is asserted by the Company or by its creditors.

     4.4 Modification  And Waiver.  This Warrant and any provision hereof may be
changed,  waived,  discharged  or  terminated  only by an  instrument in writing
signed by the party against which enforcement is sought.
       
     4.5 Notices. All notices,  requests, demands and other communications which
are required or may be given under this Warrant shall be in writing and shall be
deemed  to have  been duly  given if  transmitted  by  telecopier  with  receipt
acknowledged,  or  upon  delivery,  if  delivered  personally  or by  recognized
commercial courier with receipt acknowledged, or upon the expiration of 72 hours
after  mailing,  if mailed by  registered  or  certified  mail,  return  receipt
requested, postage prepaid, addressed as follows:

                  (a)      If to the Holder, at:

                           Charles S. Love
                           346-B Bollay Drive
                           Santa Barbara, California 93117
                           Telephone:       (805) 961-1424
                           Facsimile:       (805) 961-1434

                  (b)      If to the Company, at:

                           Miravant Medical Technologies
                           7408 Hollister Avenue
                           Goleta, California  93117
                           Attention:  David E. Mai, President
                           Telephone:       (805) 685-9880
                           Facsimile:       (805) 685-2959

or at such other  address or addresses as the  Holders,  or the Company,  as the
case may be, may specify by written notice given in accordance with this Section
4.5.

     4.6  Successors  and Assigns.  Holder may assign all or any portion of this
Warrant at any time or from time to time with the prior  written  consent of the
Company.  Each  assignment  of this  Warrant,  in  whole  or in  part,  shall be
registered on the books of the Company to be maintained  for such purpose,  upon
surrender of this Warrant at the Designated  Office,  together with  appropriate
instruments of assignment,  duly filled in and executed. Upon such surrender and
delivery,  the Company  shall,  at its own expense,  within three  Business Days
execute and  deliver a new  Warrant or  Warrants in the name of the  assignee or
assignees  specified  in  such  assignment  and in the  denominations  specified
therein and this Warrant shall  promptly be cancelled.  In the event any portion
of this Warrant is not being  assigned,  the Company shall,  at its own expense,
within  three  Business  Days issue to the Holder a new Warrant  evidencing  the
portion not so  assigned.  This  Warrant  shall be binding upon and inure to the
benefit of the  Company  and the Holder of this  Warrant,  and their  respective
successors and permitted assigns.

     4.7  Descriptive   Headings.   The  descriptive  headings  of  the  several
paragraphs  of this Warrant are for  convenience  of  reference  only and do not
constitute a part of this Warrant and are not to be  considered in construing or
interpreting this Warrant.

     4.8 Lost  Warrant Or  Certificates.  Upon  receipt of  evidence  reasonably
satisfactory  to the Company of the loss,  theft,  destruction  or mutilation of
this Warrant or of a stock  certificate  evidencing  Warrant  Shares and, in the
case of any such  loss,  theft or  destruction,  upon  receipt  of an  indemnity
reasonably  satisfactory to the Company or, in the case of any such  mutilation,
upon  surrender  and  cancellation  of such  Warrant or stock  certificate,  the
Company shall make and deliver to Holder,  within three Business Days of receipt
by the Company of such  documentation,  a new Warrant or stock  certificate,  of
like tenor, in lieu of the lost, stolen, destroyed or mutilated Warrant or stock
certificate.

     4.9 Termination Of this Warrant.  This Warrant shall terminate and shall no
longer be exercisable after the Expiration Date.

     4.10 Governing Law. In all respects, including all matters of construction,
validity and  performance,  this Warrant and the rights and obligations  arising
hereunder  shall be governed by, and construed and enforced in accordance  with,
the laws of the State of California  applicable to contracts  made and performed
in such state, without regard to principles thereof regarding conflicts of laws.

     IN WITNESS WHEREOF,  the Company has caused this Warrant to be executed and
issued by its duly authorized representative on the date first above written.

                                             MIRAVANT MEDICAL TECHNOLOGIES,
                                             a Delaware corporation


                                             By:
                                                   Gary S. Kledzik, Chairman


                                             By:
                                                   Joseph E. Nida, Secretary


<PAGE>







                          FORM OF EXERCISE SUBSCRIPTION

                (To be signed only upon exercise of this Warrant)


     The  undersigned,  the holder of the  within  Warrant,  hereby  irrevocably
elects       to       exercise       such       Warrant       to       purchase,
_______________________________________  (_____________)  shares of Common Stock
for an aggregate  Warrant  Purchase  Price of  _________________________________
Dollars  ($____________________),  such  Warrant  Purchase  Price  to be paid as
follows  (check as  applicable):  |_|  certified  or official  bank check in the
amount  of   $____________________;   |_|  wire   transfer   in  the  amount  of
$___________________;  |_|  cancellation  of  _________________________  Warrant
Shares;  or |_|  surrender of  __________________  shares of Common  Stock.  The
undersigned requests that a certificate(s) for such shares be issued in the name
of  ____________________________________,  and  delivered to, , whose address is
________________________________________ .

     The undersigned represents that it is acquiring such shares of Common Stock
for its own account for  investment  purposes only and not with a view to or for
sale in connection with any distribution thereof.


Dated: ___________________                ______________________________________
                                          Name  of  the  Holder  (must   conform
                                          precisely to  the  name  specified  on
                                          the face of the Warrant)

                                          
                                          ______________________________________
                                          Signature of authorized representative
                                          of the Holder

                                          ______________________________________
                                          Print  or  type  name  of   authorized
                                          representative

                                          ______________________________________
                                          Social Security Number  of the Holder:

                                          Address of the Holder:
                                          ______________________________________
                                          ______________________________________
                                          ______________________________________


     

                              AMENDED AND RESTATED



                   DEVELOPMENT AND COMMERCIAL SUPPLY AGREEMENT



                                     between



                             PHARMACIA & UPJOHN CO.



                                       and

                          MIRAVANT MEDICAL TECHNOLOGIES





                                  June 8, 1998

<PAGE>



                              AMENDED AND RESTATED

                   DEVELOPMENT AND COMMERCIAL SUPPLY CONTRACT



     THIS AGREEMENT, effective as of June 8, 1998 (the "Effective Date"), by and
among PHARMACIA & UPJOHN CO., a Delaware  corporation having a place of business
in Clayton,  North  Carolina  ("P&U");  and  MIRAVANT  MEDICAL  TECHNOLOGIES,  a
Delaware  corporation  having its principal  place of business in Santa Barbara,
California ("Miravant").

                              W I T N E S S E T H:

     WHEREAS,  P&U (successor by merger to Pharmacia,  Inc.) and Miravant (f/k/a
PDT,  Inc.) entered into a Development  and  Commercial  Supply  Agreement as of
August 31, 1994 (the "Original Supply Agreement"),  to develop and manufacture a
certain emulsion product;

     WHEREAS,  the development of this emulsion  product is nearly complete and,
in  anticipation  of entering the commercial  manufacturing  phase,  the parties
desire to make certain amendments to the Original Agreement;

     WHEREAS,  P&U plans to transfer its production  facility in Clayton,  N.C.,
and,  in  anticipation  of such  transfer,  the parties  desire to make  further
amendments,  and the  parties  have  therefore  agreed to amend and  restate the
Original Agreement in its entirety as set forth below;

                  NOW, THEREFORE, the parties agree as follows:

SECTION 1. -  DEFINITIONS

     1.1 Definitions.  The terms set forth in Exhibit 1 shall have the indicated
meanings for purposes of this Agreement.
                                                     

SECTION  2. -  DEVELOPMENT WORK

     2.1 Description.  As part of the Development  Work, P&U will, in accordance
with  applicable   GLP/GMP   requirements  for  injectibles,   use  commercially
reasonable  efforts  to: (a) perform  such  additional  formulation  work as the
parties  shall agree to  perform,  (b) produce  stability  lots and  supplies of
Emulsions  containing the Agent for use in the preclinical and clinical studies,
(c) establish quality assurance,  cleaning and manufacturing  procedures for the
manufacture  of the  Emulsions  and the Product in  accordance  with GMP and the
Specifications,   (d)  perform  process  scale-up  for  regulatory   filing  and
commercial  distribution,  and (e) obtain such engineering and other services as
may be required to enable P&U to comply with  applicable  environmental  laws in
the manufacture of Emulsions  containing the Agent.  Miravant (or its Affiliates
or licensees) will conduct all preclinical and clinical studies.

     2.2 Efforts of the Parties. Both parties shall use commercially  reasonable
efforts in carrying out their roles. The foregoing notwithstanding,  the parties
acknowledge  that no assurance  can be given that the Products can be developed,
or that, if developed,  such Products will have  commercial  utility or that FDA
regulatory approval can be obtained.

     2.3 Location.  Except as otherwise provided in Section 5.4, all Development
Work to be  performed  by P&U under this  Agreement  shall be performed at P&U's
research and  development  facilities  or its plant in Clayton,  North  Carolina
("Clayton Facility").

     2.4 Development Work Data Collection. P&U shall maintain records and retain
samples of all raw  materials  and  Emulsions  and the  Product,  including  all
FDA-required  records and samples,  in accordance with FDA  requirements  and in
sufficient  detail and in good  scientific  and patent  manner as will  properly
reflect all work done and results achieved in the performance of the Development
Work.  Except  to the  extent  disclosing  P&U  Technology,  all Data  produced,
generated  or  procured  by P&U or its  employees  during the  Development  Work
(including  Development Work done prior to the Effective Date) shall be owned by
and shall be Proprietary Information of Miravant. Upon the reasonable request of
Miravant, (a) Miravant may examine and review such Data at reasonable times, and
(b) P&U shall deliver to Miravant copies of such Data. P&U shall not be required
to  retain  any Data or  samples  beyond  the  later  of *****  from the date of
completion  of the  Development  Work or the  period  for which  applicable  FDA
regulations require such Data and samples to be retained.

***** Confidential Treatment Requested
<PAGE>
     2.5 Regulatory  Filings;  Drug Master File. P&U will provide  Miravant,  at
Miravant's request,  with all chemistry,  manufacturing and controls information
required to be submitted in an IND,  NDA or  amendment  or  supplement  thereto,
except such information  described on Exhibit 5 (the "DMF  Information") The DMF
Information  shall not be submitted to Miravant,  but all such information shall
be submitted in a drug master file  ("DMF")  prepared and promptly  submitted by
P&U. In respect to such DMF:

          (c)  the  contents  and  format  shall  comply  with   applicable  FDA
     requirements,  including  21 C.F.R.  ss.314.420  (or, if  appropriate,  the
     equivalent government authority in the applicable country);

          (d) P&U shall maintain such DMF in a current status at all times,  and
     Miravant  shall be  informed  of the  making of all  changes  to the DMF in
     accordance with applicable FDA regulations and guidelines;

          (e) P&U shall  authorize  Miravant to cross  reference any information
     contained in such DMF in connection with  Miravant's  submittal of the IND,
     NDA or amendment or supplement thereto for use with Product manufactured by
     P&U or under the licenses expressly granted to Miravant hereunder; and

          (f) a letter authorizing  Miravant to cross-reference  the DMF will be
     submitted to the FDA on behalf of Miravant by P&U.

All FDA filing or user fees  associated  with the IND, NDA, DMF or amendments or
supplements thereto shall be borne by Miravant.

     2.6 Quality Assurance; Access to P&U Technology.

          (a) Product Testing.  P&U shall assume  responsibility for all quality
     assurance  testing,  including  raw material  testing,  in-process  control
     testing and final product release testing, in connection with the Emulsions
     and the Product in accordance with all applicable FDA regulations. Miravant
     shall  have the right to also  have an  independent,  qualified  laboratory
     perform such testing  periodically  when Miravant  deems it necessary to do
     so.  Subject to  appropriate  confidentiality  undertakings,  P&U agrees to
     disclose  to  such  third  party  such   analytical   methods  and  product
     specifications as may be required to conduct such testing.

          (b)  Inspection  Rights.  To assure  satisfaction  with the applicable
     quality  control  procedures in connection  with the  Development  Work and
     commercial  production of the Product, upon reasonable prior notice, and at
     reasonable  times with a  representative  of P&U present,  P&U shall permit
     Miravant  or its  representatives  to  periodically  review  P&U's  quality
     control procedures and records. To the extent reasonably required to comply
     with GLP/GMP  requirements or to the extent a review of such records is not
     adequate to assure  satisfaction  with such quality  control  requirements,
     Miravant's  regulatory  personnel may visit P&U's production  facility upon
     reasonable  prior  notice.  Such visits  shall be conducted in a reasonable
     manner and shall be limited to the  equipment,  records or production  area
     relating  to P&U's  performance  under this  Agreement.  In addition to the
     foregoing  rights,  Miravant shall have the right to inspect and audit such
     facilities for compliance with GMP requirements. Miravant shall provide P&U
     at least five (5) days notice of its  intention to conduct such  inspection
     and audit, and such inspection and audit shall in no way interfere with the
     manufacturing,  packaging or control of the Product or any other  products.
     None of the foregoing rights shall apply to the DMF  Information,  to which
     Miravant may have access solely as provided in Section 2.5(d) below.

          (c) Site Visit  Restrictions.  Miravant  personnel  shall  observe all
     safety  regulations of P&U when on P&U's  premises.  Miravant  acknowledges
     that P&U considers  that such facility  (including its equipment and manner
     of use) embodies Proprietary Information,  all of which shall be subject to
     the  provisions of Section 10 below.  To the extent any such  inspection or
     audit cannot be reasonably  performed due to the unavoidable  observance of
     confidential  information of any third party which has imposed restrictions
     on P&U's  disclosure of such  information,  the parties shall  determine in
     good  faith   alternative   procedures  to  assure   compliance   with  GMP
     requirements (including using an independent third party).

          (d) Access to P&U Technology. Notwithstanding anything to the contrary
     in this  Agreement,  Miravant shall not have access to or the right to use:
     (a) any P&U Technology described in subsection (a) of the definition of P&U
     Technology  (Paragraph  1.20 of Exhibit  1);  and (b)  except as  otherwise
     expressly  provided in this  Agreement,  any other P&U  Technology.  To the
     extent  Miravant  needs to review P&U  Emulsion  Technology  not  otherwise
     available  to it under this  Agreement  to confirm  that an Emulsion or the
     Product is manufactured in accordance with all applicable GMP  requirements
     and Product  Specifications,  P&U shall  disclose  such  information  as is
     required to comply with such  requirements  to an  independent  third party
     consultant  selected  by  Miravant  and to which  P&U  does not  reasonably
     object. Such consultant shall be directed not to submit any report or other
     information  to Miravant  prior to providing P&U an  opportunity  to review
     such information and expunge any of P&U's Proprietary Information embodying
     P&U Technology.  P&U shall complete promptly its review of such reports and
     other   information.   To  the  extent  Miravant's  chief  medical  officer
     reasonably  requires to review any  expunged P&U  Technology  to assure the
     safety of an  Emulsion  or the  Product or to assure  that an  Emulsion  or
     Product is manufactured in accordance with all applicable GMP  requirements
     and Product Specifications, and notifies P&U of such requirement, P&U shall
     allow only such  individual to review the original  version of such reports
     solely for such purpose.

SECTION 3. - DEVELOPMENT WORK MANAGEMENT

     3.1 Project  Leaders.  The parties  designate the following  individuals as
their respective Project Leaders:

                  For P&U:              Lynn Collins-Gold

                  For Miravant:         Jan Guerrero

The Project  Leaders (and their  staffs)  shall meet at least once each calendar
quarter,  or from time to time as agreed by the parties,  to exchange scientific
information and progress reports summarizing the Development Work completed, the
results  obtained  during that quarter and the  Development  Work expected to be
performed in the next quarter.  Either party may change its Project  Leader upon
prior notice to the other party.

     3.2  Administrative  Responsibility.  The  technical  personnel  and  other
representatives  at any time furnished by either party to the other or otherwise
performing  services  pursuant to this  Agreement  shall at all times remain the
employees or representatives  of the party furnishing such personnel.  Except as
otherwise expressly provided in Section 4 below, each party shall be responsible
for  and  shall  pay  all  salaries,  living  allowances,  insurance  coverages,
traveling expenses, any withholding required for tax or other purposes and other
remunerations and expenses to which its own employees or representatives  may be
entitled.  Notwithstanding  the foregoing,  such employees or representatives of
either party, while on the property of the other party or its designee, shall be
at all times subject to the  reasonable  rules and  regulations  adopted by such
other party with respect to the conduct of its own employees or representatives.

SECTION 4. - DEVELOPMENT WORK COMPENSATION

     4.1  Initial  Fee.  In  consideration  of P&U's  commitment  to develop the
Emulsions  and the Product in  accordance  with the terms  hereof and the use of
P&U's Technology for the development of the Emulsions and the Product,  Miravant
paid P&U an initial fee of $600,000.

     4.2 Hourly Rates.  P&U shall  provide the services  required to perform the
Development  Work  after the  Effective  Date at the  hourly  rates set forth in
Exhibit 2 hereto.  It is assumed  that all  standard  laboratory  equipment  and
instrumentation  procurement  and usage are included in the hourly charge,  with
the exception of dedicated  equipment  used solely for the  Development  Work as
provided in Section 4.4 herein.

     4.3 Travel and Supplies.  Subject to its prior written  approval for travel
outside the United  States,  Miravant  shall also  reimburse P&U for its actual,
reasonable and necessary  out-of-pocket travel expenses incurred specifically in
connection  with  providing  the  services  hereunder  (exclusive  of  commuting
expenses),  including,  but not limited to, coach air and ground transportation,
reasonable  lodging  and  meals.  Miravant  shall  also  reimburse  P&U  for its
out-of-pocket  expenses for courier  services,  outside  reproduction  services,
laboratory  chemicals  (except  the Agent  which  shall be  provided by Miravant
pursuant to Section 5.5), other laboratory  supplies,  and outside analytical or
other testing work, and other purchased items which are not presently  available
at the P&U site and which are required to produce  Emulsions for the Development
Work  (including any  replacement  items).  P&U may,  without  Miravant's  prior
approval,  procure any item of  laboratory  or other  equipment  with a purchase
price less than ***** without the prior approval by Miravant,  which is required
for P&U to perform its obligations  hereunder,  and is not now available for use
at the facility where the equipment is needed. All equipment  purchased pursuant
to this Section 4.3 by P&U shall be owned by P&U.

     4.4 Purchased Equipment.  P&U shall not acquire any laboratory equipment or
other item with a purchase  price  greater than ***** without  Miravant's  prior
consent.  Upon  receipt  of such  consent,  P&U shall  then  have the  option to
purchase  such item  itself.  All such items  purchased by P&U shall be owned by
P&U, and P&U may charge Miravant for the pro rata allocable depreciation on such
equipment  based  upon five  year  straight  line  depreciation.  All  equipment
purchased  pursuant to this Section 4.4 by Miravant  shall be owned by Miravant.
Title to and risk of loss of any  equipment  purchased  under this  Section  4.4
shall be in P&U if  purchased  by P&U, and in Miravant if purchased by Miravant.
Miravant may, at its option,  furnish P&U the use of any such equipment Miravant
possesses or to which it may have access,  in which case  Miravant  shall retain
title  to and  risk of loss  of such  equipment.  P&U  shall,  upon  request  by
Miravant,  plainly  mark  any  equipment  owned  by  Miravant  which is in P&U's
possession.

***** Confidential Treatment Requested
<PAGE>
     4.5 Invoicing.  During the  Development  Work after the Effective Date, P&U
shall submit monthly  invoices to Miravant which shall include:  (a) total hours
expended by each person in a category listed on Exhibit 2 for whom reimbursement
is  sought,  and (b)  itemized  list of all  reimbursable  expenses.  Miravant's
payment  shall be due thirty (30) days after its  receipt of each such  invoice,
except  for  amounts  that  Miravant  reasonably  disputes.  P&U shall  maintain
accurate  records of time charges and travel and equipment  expenses,  and shall
maintain  accurate  supporting  documents to verify all of the  foregoing.  Such
records and  documents  shall be available  for audit by Miravant  during normal
business  hours and on  reasonable  notice,  but not  later  than the end of the
calendar year in which the invoice is rendered.

SECTION 5. - COMMERCIAL SUPPLY

     5.1  Purchase  and Sale.  During the term of this  Agreement,  (a) Miravant
shall purchase, and P&U shall manufacture and supply, all of Miravant's (and its
Affiliates')  worldwide  requirements  of  Emulsions  containing  the  Agent for
commercial use; and (b) to the extent not purchased by Miravant,  Miravant shall
cause its licensees to purchase from P&U, and P&U shall  manufacture and supply,
all of their worldwide requirements of such Emulsions for commercial use. Except
as set forth in Section  5.2 below,  P&U shall not be  obligated  to supply more
than  *****  Units  per  year  of the  Product.  The  Initial  Facility  will be
configured  to produce up to ***** Units per year.  P&U's main  production  line
will be modified to produce  the Product in excess of such  quantity.  P&U shall
not be required to produce the Product for commercial use above such level until
***** further notice from Miravant that its requirements will exceed such level,
plus the amount of time required for internal and FDA validation and approval of
such modified production facility.

     5.2 Expanded Capacity.

          (a) Miravant's Right to Manufacture. As soon as practicable,  Miravant
     shall notify P&U in writing when it expects its aggregate  annual worldwide
     requirements  of Product to exceed ***** Units  ("Notice to  Expand").  P&U
     shall  then  have  the  right to  produce  all  such  additional  worldwide
     requirements of Product if the parties negotiate mutually  acceptable terms
     amending this Agreement (including  construction time periods and extension
     of the  term of this  Agreement  for the  construction  of a  dedicated  or
     multipurpose  production line ("Expanded  Production  Line")).  In no event
     shall P&U be  obligated  to supply  Product  manufactured  in the  Expanded
     Production  Line sooner than ***** after entering into a written  agreement
     with Miravant to construct the Expanded Production Line, plus the amount of
     time  required  for  internal  and  FDA  validation  and  approval  of such
     production  facility.  If the parties  fail to agree upon such terms for an
     Expanded  Production Line, (a) P&U shall continue to produce,  and Miravant
     shall  continue  to  purchase,  Product  from P&U up to ***** Units or such
     higher quantity as P&U may then commit in writing to provide for so long as
     this  Agreement  shall  continue  pursuant to Section 13; and (b)  Miravant
     shall have the right to manufacture (or have manufactured) its requirements
     of the  Products in excess of the  quantity so committed by P&U as provided
     in Section 5.2(b) below.

          (b)  Standby   License;   Supply  of  *****.  If  Miravant  elects  to
     manufacture  or  have  manufactured  by a  third  party  Miravant's  excess
     requirements  for the  Product as  provided  in Section  5.2(a) and if then
     requested by Miravant, P&U and Miravant shall enter into a separate license
     agreement providing Miravant with a non-exclusive  license (with a right to
     sublicense  as  provided  below)  under  the  P&U  Emulsion  Technology  to
     manufacture  the Product (the  "Standby  License  Agreement").  The Standby
     License   Agreement   shall  provide,   among  other  customary  terms  and
     conditions,   the   following:   (i)  the  license  grant  shall   continue
     indefinitely,  subject to  termination  for breach of such Standby  License
     Agreement;  (ii)***** (iii) Miravant may grant to one or more third parties
     (other  than an  Emulsion  Competitor,  unless  Miravant  terminates  under
     Section  13.2 for a material  breach by P&U, in which case there will be no
     such  restrictions) a sublicense under the P&U Emulsion  Technology for the
     purpose of  producing  the Product  and  supplying  it to Miravant  and its
     Affiliates  and  licensees.  An "Emulsion  Competitor"  means a third party
     which, at the time of entering into the applicable  licensing  arrangement,
     is manufacturing or selling  pharmaceutical  emulsion products  competitive
     with  those  manufactured  or  sold  by P&U or  any of its  Affiliates.  In
     addition,  P&U shall  agree to supply  its ***** for use in  producing  the
     Product;  provided,  that  such  ***** is then  used in the  Product.  Such
     material shall be supplied upon commercially  reasonable terms, including a
     supply  price  equal to the amount  referred to in Exhibit 4 hereto and P&U
     may not terminate such supply agreement, other than for specified causes to
     be set forth therein, without providing written notice of at least *****

***** Confidential Treatment Requested
<PAGE>
     5.3 Packaging. Unless otherwise specified by Miravant, all Product supplied
hereunder  shall be in  finished  dosage  form,  i.e.,  packaged,  labeled,  and
suitable  for  shipment  to  end  users  in   accordance   with  the   Packaging
Specifications.

     5.4  Manufacturing  Location.  All  Product  shall be  manufactured  at the
Clayton  Facility,  except that,  at P&U's  option,  P&U shall have the right to
manufacture and supply such Product from one or more production facilities owned
by P&U or any of its Affiliates on the following conditions:

          (a) Such  other  production  facility  or  facilities  shall have been
     approved  by the FDA (and,  if  appropriate,  the  equivalent  governmental
     authority in the applicable country) for manufacturing the Product;

          (b) Miravant shall have access to such facility and related records to
     the same extent as it does to the Clayton Facility; and

          (c) The  Production  Cost will not  exceed the  Production  Cost which
     would have  applied  if such  Products  were  manufactured  at the  Clayton
     Facility,  and there will not be any additional  costs for Development Work
     as a result of using such other facility.

     5.5 Supply of Agent.  Within thirty (30) days after submitting any purchase
order for the Product, Miravant shall use its best efforts to deliver at no cost
to P&U, DDP to P&U's manufacturing plant (INCOTERMS 1990), sufficient quantities
of the Agent and  other  active  therapeutic  ingredients  necessary  for P&U to
manufacture  the Product  thereunder.  The Agent shall be shipped in  containers
adequate to prevent  losses or breakage from all  reasonably  expected  handling
procedures.  In the event  Miravant  is unable  to  provide  the Agent and other
active  therapeutic  ingredients  within any such 30 day period, the "lead time"
period for the  manufacture  of the  Product  referred  to in  Paragraph  5.1 of
Exhibit 2 hereof  under the  affected  purchase  order shall be extended for the
period of time P&U is delayed by such inability.  Miravant shall retain title to
all Agent and other active  therapeutic  ingredients  supplied to P&U. Except as
provided  in Section  7.5 below,  P&U shall bear the risk of loss for such Agent
and other active therapeutic ingredients while they are in the care, custody and
control of P&U. Such Agent and other active  therapeutic  ingredients shall meet
the specifications therefor.

     5.6 *****

          (a) *****

          (b) *****

          (c) *****

          (d) *****

SECTION 6. - ADDITIONAL TERMS AND CONDITIONS

     6.1  Additional  Terms.  The supply and  purchase of the  Product  shall be
governed by the terms of this Agreement,  including the terms and conditions set
forth in Exhibit 3.

     6.2  Agreement  Governs.  The  terms  and  conditions  of  this  Agreement,
including  all Exhibits  hereto,  constitute  the entire  agreement  between the
parties  with  respect to all  purchase  orders  issued to P&U for the supply of
Product.  Acceptance  by P&U of  Miravant's  orders is expressly  limited to and
conditioned  upon  acceptance  of these terms and  conditions,  which may not be
changed or waived except in a writing  signed by the parties.  Any additional or
inconsistent  terms and conditions  contained in Miravant's  purchase  orders or
other documents  supplied by Miravant or in  acknowledgments  or other documents
supplied by P&U are hereby expressly rejected.

SECTION 7. - COMPENSATION

     7.1 Supply  Price.  Subject to adjustment as provided in Section 7.3 below,
the purchase price for each Unit of Product  supplied by P&U during any year for
commercial sale ("Supply  Price") ***** units annually during the ***** from the
Effective Date without a price  limitation,  and,  thereafter,  the Supply Price
*****  and  ***** . The  Production  Cost  shall  be  determined  in the  manner
described in Exhibit 4 hereto.


***** Confidential Treatment Requested
<PAGE>



     7.2  *****

          *****

          *****

     7.3 Adjustments. If P&U can demonstrate its Production Costs have increased
due to changes  in GMP or other  legal  requirements  or  manufacturing  methods
outside of P&U's control, then the parties will agree on an equitable adjustment
to the  Supply  Price,  and if they  fail  to  agree  within  ***** , it will be
resolved as provided in Article 14 hereof.

     7.4 INTENTIONALLY DELETED.

     7.5 Agent Yield.  To the extent P&U's  consumption of the Agent exceeds the
amount  permitted  by the yield rate  determined  as provided  below,  P&U shall
credit  Miravant  for the amount of  Miravant's  actual  costs to  procure  such
excessive consumption of the Agent. After the ***** of commercial production (so
long as at least ***** commercial  batches of the Product were produced in P&U's
Initial Facility),  the parties shall determine an appropriate yield rate of the
Agent. In making such determination the parties shall apply customary production
standards and take into account all relevant factors, including the actual yield
losses during such commercial production,  likely effect of contemplated changes
to the production  methods,  container size and  configuration,  and anticipated
production  schedules.  In no event shall such yield rate exceed the lower limit
of a ***** confidence  interval  containing the mean of the actual yields during
such commercial  production.  The parties shall establish reasonable  procedures
for measuring the actual yields,  calculating Miravant's actual costs to procure
Agent,  adjusting  such yield  rate to account  for the effect of changes to the
Specifications, GMP and other legal requirements and other conditions beyond the
reasonable  control  of  P&U.  The  foregoing  procedure,   including  *****  of
commercial  operation,  shall be applied  each time the  production  facility is
transferred to a different  capacity  batch size. All Agent used  (including all
production  losses not resulting from P&U's gross  negligence)  during each such
***** period shall be Miravant's responsibility.

     7.6 Payment. P&U shall submit invoices upon each shipment for the number of
Units so  shipped.  Miravant  shall pay all  invoices,  plus all  proper  taxes,
freight and other transportation charges stated thereon, within thirty (30) days
after its receipt.



***** Confidential Treatment Requested
<PAGE>



SECTION 8. - INVENTIONS AND LICENSES

     8.1 P&U Technology.  P&U shall retain the entire right,  title and interest
in all P&U Technology,  and except as otherwise  provided in Sections 5.2(b) and
13.7,  nothing in this  Agreement  shall give  Miravant  any  ownership or other
rights in or to any P&U Technology.

     8.2 Miravant Technology.  Miravant shall retain the entire right, title and
interest in all Miravant  Technology,  and nothing in this Agreement  shall give
P&U any ownership rights in or to any Miravant Technology.

     8.3 Development Technology.  Miravant shall own the entire right, title and
interest  in  all  Development  Technology,  whether  conceived  solely  by  its
employees or  consultants  or conceived  solely by or jointly with  employees or
consultants of P&U or its Affiliates  and employees or  consultants.  P&U hereby
assigns and agrees to assign, and shall cause its Affiliates to assign and agree
to  assign,  to  Miravant  all right,  title and  interest  in such  Development
Technology  conceived  by  employees or  consultants  of P&U or its  Affiliates,
either solely or jointly with others.

     8.4 P&U License.  Miravant  hereby  grants and agrees to grant to P&U *****
license to use Miravant's  Patents,  Know-How and the Development  Technology to
manufacture  Emulsions  and  the  Product  exclusively  for  Miravant  (and  its
licensees and Affiliates) and to perform its other obligations  hereunder.  Such
license shall include the right to grant  sublicenses  only to P&U Affiliates to
the extent necessary for the performance of this Agreement. Miravant also grants
and  agrees  to  grant  to P&U and  its  Affiliates  an  *****  (subject  to the
confidentiality  provisions  contained in Section 10 below),  worldwide  license
(with right to sublicense and assign) to use the Development  Technology for the
manufacture,  use and  sale of any  emulsion  product  suitable  for  parenteral
nutritional  purposes or as a delivery system for compounds other than compounds
for photodynamic therapeutic uses.

     8.5 Patent Applications.  If a patentable  invention embodying  Development
Technology is conceived in the course of and within the scope of the Development
Work and reduced to practice during the term hereof or within *****  thereafter,
Miravant  shall  have  the  sole  right  to  determine  whether  to file  patent
applications  covering the  invention  and shall bear all  expenses  incurred in
connection with the prosecution of all  applications  and the maintaining of all
patents.  P&U  shall  cooperate  in the  filing  and  prosecution  of  any  such
applications and patents.

     8.6 Patent Infringement.

          (a) Miravant  Indemnity.  Miravant  shall defend and indemnify P&U and
     its  Affiliates  from any  claims or  actions  brought  against  P&U or its
     Affiliates alleging that the manufacture, use or sale by or for Miravant or
     P&U of the Product or any Emulsion infringes any claim of any United States
     or foreign  patent or other  proprietary  right of a third party;  provided
     that  Miravant  shall have no  obligation  to so defend or indemnify to the
     extent  such  infringement  results  from  the  use  of P&U  Technology  or
     Development  Technology  invented solely by P&U or its Affiliates,  in each
     case,  other  than  uses  where  the  presence  of  the  Agent  causes  the
     infringement.  P&U shall have the right to advisory  counsel in such action
     at its own  expense.  Miravant  shall have the right to settle or otherwise
     terminate said actions;  provided,  the settlement does not obligate P&U in
     any way.

          (b) P&U  Indemnity.  P&U shall defend and  indemnify  Miravant and its
     Affiliates  from any  claims or actions  brought  against  Miravant  or its
     Affiliates alleging that the manufacture, use or sale by or for Miravant or
     P&U of the Product or any Emulsion  manufactured by P&U infringes any claim
     of any United  States or  foreign  patent or other  proprietary  right of a
     third party, to the extent such  infringement  results only from the use of
     P&U  Technology or  Development  Technology  invented  solely by P&U or its
     Affiliates,  in each case,  other than uses where the presence of the Agent
     causes the infringement.  Miravant shall have the right to advisory counsel
     in such  action at its own  expense.  P&U shall have the right to settle or
     otherwise  terminate  said  actions;  provided,  the  settlement  does  not
     obligate Miravant in any way.

SECTION 9. - TRADEMARKS.

     9.1 Trademark  Selection.  Miravant shall have the sole authority to select
and use trademarks for the Product and shall bear all the costs  associated with
such selection.  Miravant shall defend, indemnify and hold P&U harmless from and
against all claims, demands, liabilities, damages, costs and expenses (including
attorneys' reasonable fees) in respect to the alleged infringement of trademark,
trade name or other similar rights of third parties  arising out of the sale and
marketing of Product by or for Miravant.

***** Confidential Treatment Requested
<PAGE>


SECTION 10. - CONFIDENTIALITY

     10.1  Non-Disclosure.  Except as otherwise  provided in Section 10.2 below,
during the duration of this  Agreement and  thereafter:  (a) neither party shall
use  or  disclose  to  third  parties  any  of  the  other  party's  Proprietary
Information,  and (b) neither  party  shall use or  disclose  to third  parties,
except as  permitted  by, or  reasonably  necessary  to perform its  obligations
under, this Agreement, any Development Technology or any Data unless or until it
becomes part of the public domain or is lawfully received by the receiving party
from a third party under no  obligation  to the  disclosing  party with  respect
thereto, it being expressly understood, however, that Miravant shall be entitled
to file  patent  applications  with  respect to any  inventions  embodied in the
Development  Technology  and  shall  be  entitled  to  license  the  Development
Technology  to a third  party  manufacturer  of the Product in  accordance  with
Section 5.2(b) and 13.7 hereof.  Both parties shall take all reasonable steps to
minimize the risk of disclosure  of any  Proprietary  Information  of the other,
including without limitation:

          (i) limiting  access to such  information to only those  employees and
     consultants  approved  by the other  party  whose  duties  require  them to
     possess  same  (which   consultant   approval  shall  not  be  unreasonably
     withheld);

          (ii)  requiring  such  employees and  consultants to execute a written
     agreement   obligating  such  employees  or  consultants  to  maintain  the
     confidentiality  of the  information  to at least  the same  extent  as his
     employer is obligated;  copies of such agreements  shall be provided to the
     other party on request;

          (iii) exercising at least the same degree of care that it uses for its
     own Proprietary Information; and

          (iv)  providing   proper  and  secure  storage  for  the   Proprietary
     Information.

     10.2   Permitted   Disclosure.   Either  party  may  disclose   Proprietary
Information  of the other pursuant to a lawful  request,  order or demand of any
governmental agency or judicial authority or, to the extent reasonably necessary
for a  party  to  perform  its  obligations  hereunder,  to  any  Affiliates  or
subcontractors;   provided,  that  protective  orders  or  other  assurances  of
confidentiality  are  received  to the  extent  reasonably  available  from such
agency,  authority or third party;  and provided,  further,  that the disclosing
party (a) gives the other party  notice of the  request or order and  reasonable
time to object, (b) follows any proper instructions of the other party regarding
such disclosure or objections;  and (c) prior notice of any intended  disclosure
to such Affiliate or subcontractor which shall have entered into a nondisclosure
agreement substantially equivalent to the terms of this Section 10.

     10.3 Duties Upon Termination. Except to the extent reasonably necessary for
exercising its rights which survive termination of this Agreement,  upon request
by the disclosing party after such termination, the receiving party shall return
all  Proprietary  Information  of the other in its  possession and shall make no
further use of such Proprietary Information.

     10.4 Disclosure of Agreement.  Any public disclosure of this Agreement, the
terms  hereof,  the  transactions  contemplated  hereby or the results  obtained
hereunder   (including,   without  limitation,   press  releases,   advertising,
governmental  filings,  discussions  with lenders,  investment  bankers,  public
officials and the media and other statements made available generally by a party
hereto to the public) will be reviewed  and  consented to by each party prior to
such  disclosure,  and neither  party  hereto  shall  disclose the terms of this
Agreement  to any third party  without the prior  written  consent of the other.
Such  consents  shall not be untimely or  unreasonably  withheld by either party
hereto.  In addition,  if either party is required to make public  disclosure of
this Agreement,  or of any provision hereof or of the transactions  contemplated
hereby  pursuant  to any  law,  rule or  regulation  of any  government  agency,
including   without   limitation  the  United  States  Securities  and  Exchange
Commission or any  securities  exchange on which  securities  of the  disclosing
party are then listed, then in each case, the disclosing party shall endeavor to
obtain  confidential  treatment of the Agreement and  transactions  contemplated
hereby to the extent reasonably requested by the other party.

     10.5  Technical  Publication.   No  technical  paper,  abstract,   article,
publication,  or  announcement  of advances  generated  in  connection  with the
Development Work,  whether during the period of performance of this Agreement or
thereafter,  shall be made by either  party  without the written  consent of the
other party.

     10.6 Injunctive  Relief.  Both parties  acknowledge that either party would
not have an adequate remedy at law for breach of any of the covenants  contained
in  this  Section  10 and  hereby  consent  to the  enforcement  of  same by the
non-breaching party by means of temporary or permanent  injunction issued by any
court  having  jurisdiction  thereof and  further  agrees that it be entitled to
assert  any  claim it may have for  damages  resulting  from the  breach of such
covenants in addition to seeking injunctive or other relief.
<PAGE>


SECTION 11. - EXCLUSIVITY

     11.1 P&U. P&U agrees that during the term of this  Agreement,  its services
and activities in developing  and  manufacturing  the Emulsions,  the Product or
***** shall be exclusive to and only for Miravant, its licensees and Affiliates.
Notwithstanding the foregoing, P&U may ***** to any third party.

     11.2 Miravant.  Except as otherwise  provided herein,  Miravant agrees that
during the term of this Agreement it shall purchase from P&U all of its (and its
Affiliates')  worldwide  requirements  of the Emulsions,  and, to the extent not
purchased by Miravant,  it shall cause its licensees to purchase from P&U all of
their worldwide requirements of Emulsions.

SECTION 12. - REPRESENTATIONS AND WARRANTIES

     Each party hereby warrants and represents as follows:

     12.1 It has full power and authority to execute and deliver this  Agreement
and to consummate the transactions  contemplated  herein. This Agreement and the
provisions hereof constitute the valid and legally binding obligations of it and
do not require the consent,  approval or authorization of any person,  public or
governmental authority or other entity;

     12.2  The  execution  and  delivery  of  this  Agreement  by  it,  and  the
performance of its obligations hereunder, are not in violation or breach of, and
will not  conflict  with or  constitute  a default  under,  its  Certificate  of
Incorporation  or Bylaws,  or any material  agreement,  contract,  commitment or
obligation to which it is a party or by which it is bound, and will not conflict
with or violate any applicable law, rule, regulation,  judgment, order or decree
of any governmental agency or court having jurisdiction over it or its assets or
properties; and

     12.3 In the case of Miravant  only, it represents  and warrants that it has
the  exclusive  right to exploit the Agent for all medical  uses,  and no rights
thereto have been granted to any third party.

SECTION 13. - TERMINATION.

     13.1 Term of Agreement.  Unless terminated  earlier as provided in Sections
13.2 through 13.5 or 16.2 below, this Agreement shall continue in full force and
effect indefinitely,  except that either party may terminate this Agreement upon
or after the tenth anniversary of the first commercial sale of the Products,  by
giving  written notice of its intent to so terminate at least ***** prior to the
effective date of termination.

     13.2  Termination for Cause.  Without  prejudice to any other rights it may
have hereunder or at law or in equity, either party may terminate this Agreement
immediately  by written  notice to the other party upon the occurrence of any of
the following:

          (a) the other party becomes insolvent,  an order for relief is entered
     against the other party under any bankruptcy or insolvency  laws or laws of
     similar import, or fails generally to pay its debts as they become due;

          (b) the  other  party  makes  an  assignment  for the  benefit  of its
     creditors or a receiver or  custodian is appointed  for it, or its business
     is placed  under  attachment,  garnishment  or other  process  involving  a
     significant portion of its business;

          (c) the other party fails to maintain  operations as a going  business
     for more than twenty days; or

          (d) after sixty days' written notice from the terminating party (which
     notice  shall state the intent to so  terminate),  the other party fails to
     remedy any material breach of this Agreement.

     13.3  Termination  by P&U. P&U may  terminate  this  Agreement  ***** after
written  notice to Miravant if ***** In either of such events,  Miravant and P&U
shall meet  together  within the thirty (30) day notice  period to consider  the
causes for delay and alternatives to termination of this Agreement.

     13.4 Termination by Either Party. Either party may terminate this Agreement
upon  written  notice at any time if:  (a)  Miravant  permanently  abandons  the
further  development  of  Emulsions  containing  the Agent or the  Product,  (b)
neither party is able to obtain, after expending commercially reasonable efforts
in good faith,  a stable viable  formulation of Emulsion to submit in an NDA; or
(c) Miravant stops sales of Product at any time.

***** Confidential Treatment Requested
<PAGE>
     13.5 Right to Withdraw.  Miravant may permanently withdraw the Product from
the market  because such Product:  (a) is subject to a recall not involving only
isolated lots; (b) is recalled or withdrawn in any country in the world;  or (c)
is otherwise  reasonably  believed to have material  adverse risks not affecting
only isolated lots. If Miravant so withdraws the Product, it shall then have the
right to terminate this Agreement.

     13.6 Rights and Duties Upon Termination. Termination of this Agreement, for
whatever  reason,  shall not affect any rights or obligations  accrued by either
party prior to the effective date of termination  including a purchase order for
Product.  Without limiting the generality of the foregoing,  upon termination of
this Agreement after commencement of manufacturing:

          (a) Provided that Miravant provides  adequate  assurances for payment,
     P&U shall sell to Miravant at the Supply  Price  (Miravant  shall then have
     the obligation to purchase)  P&U's inventory of Product and/or to return to
     Miravant  its  existing  inventory  of the Agent,  in whole or in part,  by
     notice to Miravant within thirty (30) days following termination.

          (b) Upon any termination by Miravant,  P&U shall continue to cooperate
     with Miravant in respect of all  requirements of the FDA and this Agreement
     regarding previously produced Product.

          (c) Upon any termination,  both parties shall  immediately cease using
     the other party's Proprietary Information,  except as permitted by Sections
     8.3, 8.4, and 13.7

     13.7 Miravant License.  In the event of termination of this Agreement:  (i)
by either party under  Section  13.1,  (ii) by Miravant  under  Section 13.2, or
(iii) by P&U under  Section 13.3,  and the request of Miravant,  P&U shall grant
Miravant a  non-exclusive  license to practice  the P&U Emulsion  Technology  to
manufacture,  or have  manufactured  by a third  party  (other  than an Emulsion
Competitor), Emulsions (including the Product). Miravant shall pay P&U a royalty
on its Net Sales of  Emulsions  containing  the Agent or the  Product  for *****
years  following  termination of this Agreement or for ***** years following the
first commercial sale, whichever is later. The royalty per Unit of Product shall
be equal to the following percentages of the Product:

          (a) *****, if terminated by P&U under Section 13.1;

               (b) *****, for the ***** following such first commercial sale and
          ***** for ***** , if terminated by Miravant under Section 13.1 (and no
          royalty  shall be  payable  on Net  Sales  after  ***** of such  first
          commercial sale);

          (c) *****, if terminated by Miravant under Section 13.2; and

          (d) *****, if terminated by P&U under Section 13.3.

     13.8 Miravant's Books and Records.  Miravant shall maintain  adequate books
and records to verify the  calculation  and  derivation of royalties  payable by
Miravant.  Such books and records shall be available for inspection and audit by
P&U and its  representatives  at reasonable times and on reasonable  notice, but
not later than the end of the second  calendar  year after the year in which the
records are  generated,  for the purpose of  verifying  reports and payments due
hereunder.  In the event such inspection and audit should show an understatement
of the royalties  payable by Miravant,  Miravant  shall  promptly pay to P&U any
additional amounts due hereunder, and if such understatement should be more than
five percent (5%) of the royalties for the  respective  period,  Miravant  shall
also bear the expenses incurred for said audit.

     13.9 Disagreements. In the event of a disagreement which cannot be resolved
in respect of the  calculation  of the  royalties  referred  to in Section  13.7
herein, the matter shall be submitted for dispute resolution pursuant to Section
14 and at least one neutral arbitrator shall be a certified public accountant.

     13.10  Survival.  The following  Sections  survive any  termination of this
Agreement: 1, 2.4, 4, 5.2(b), 8, 9, 10, 12, 13.6, 13.7, 13.8, 15, and Paragraphs
2, 3, and 12 of Exhibit 2 and any other  provisions  which by their terms extend
beyond termination.

***** Confidential Treatment Requested
<PAGE>
SECTION 14. - DISPUTE RESOLUTION

     14.1  Mediation.  If a dispute arises under this Agreement  which cannot be
resolved by the personnel directly involved, either party may invoke the dispute
resolution  procedure set forth in this Section 14 by giving  written  notice to
the other party,  designating an executive officer with appropriate authority to
be its representative in negotiations  relating to the dispute.  Upon receipt of
such notice, the other party shall, within ten (10) business days,  designate an
executive  officer  with  similar  authority  to  be  its  representative.   The
designated executive officers shall, following whatever investigation each deems
appropriate,  promptly enter into  discussions  concerning  the dispute.  If the
dispute is not resolved as a result of such discussion  within 60 days after the
date of such  notice,  either  party may  commence  arbitration  as  provided in
Section 14.2 below.

     14.2 Arbitration.  Subject to the terms of Section 14.1 above, any dispute,
controversy or claim arising out of or in connection with this Agreement, or the
breach,  termination or invalidity  thereof,  shall be settled by arbitration in
Raleigh,  North Carolina  before a panel of three (3)  arbitrators in accordance
with the Commercial  Arbitration Rules of the American Arbitration  Association.
The parties agree that the  arbitrators  shall have the power to award  damages,
injunctive relief and reasonable attorneys' fees and expenses to either party in
such  arbitration.  The  decision  reached  by  such  arbitrators  in  any  such
proceeding  shall be final and  binding  upon the parties  thereto.  The parties
shall,  however, in addition to the rights provided in Section 10.6, remain free
to apply  to any  competent  judicial  authority  for  interim  or  conservatory
measures,  even after the  transmittal of the file to the aforesaid  arbitrators
and even if there are no exceptional circumstances.

SECTION 15. - LIMITATION OF LIABILITY

     IN NO EVENT SHALL  EITHER  PARTY NOR ANY OF ITS  RESPECTIVE  AFFILIATES  BE
LIABLE  TO THE  OTHER  PARTY OR ANY OF ITS  AFFILIATES  FOR  SPECIAL,  INDIRECT,
INCIDENTAL  OR  CONSEQUENTIAL  DAMAGES,  WHETHER IN  CONTRACT,  WARRANTY,  TORT,
NEGLIGENCE,  STRICT LIABILITY OR OTHERWISE,  including, but not limited to, loss
of profits (except for Profit) or revenue, loss of use of any equipment, cost of
capital, down time costs, delays, or claims of customers of any of them or other
third parties for such or other damages.

SECTION 16. - MISCELLANEOUS

     16.1 Choice of Law. This Agreement shall be governed and  interpreted,  and
all rights and  obligations  of the parties shall be  determined,  in accordance
with the laws of the State of North  Carolina,  excluding  its  conflicts of law
rules.

     16.2 Force Majeure.

          (a) P&U and  Miravant  shall  not be deemed  to be in  default  nor be
     liable  for  loss,  damage,  or for delay in  performance,  when and to the
     extent due to causes beyond its  reasonable  control or from fire,  strike,
     labor  difficulties,   act  or  omission  of  any  governmental  authority,
     compliance  with  governmental  regulations,   noncompliance  with  GLP/GMP
     requirements  despite  such  party's  good faith  efforts and  adherence to
     procedures  consistent with past practice,  insurrection or riot,  embargo,
     delays or shortages in transportation.

          (b) Each party agrees to give the other party prompt written notice of
     the occurrence of any such condition, the nature thereof, and the extent to
     which the affected  party will be unable  fully to perform its  obligations
     hereunder.  Each party further agrees to use reasonable  efforts to correct
     the  condition  as quickly as possible  and to give the other party  prompt
     written notice when it is again fully able to perform such obligations.  In
     the event such  condition is not  corrected  within six (6) months from the
     original  notification under this Section 16.2, the party whose performance
     was not affected by the condition may terminate this Agreement.

          16.3  Notices.  All notices,  requests,  demands,  waivers,  consents,
     approvals  or  other  communications  to any  party  hereunder  shall be in
     writing and shall be deemed to have been duly given if delivered personally
     to such  party  or  sent to such  party  by  facsimile  transmission  or by
     registered  or certified  mail,  postage  prepaid,  to its address as shown
     below:

Miravant:
                  Miravant Medical Technologies
                  7408 Hollister Avenue
                  Santa Barbara, CA 93117
                  Attention:  Dr. Gary S. Kledzik
                  Fax: 805-685-2959

with a copy, in the case of notices  expressly  provided for in this  Agreement,
to:

                  Joseph E. Nida
                  Nida & Maloney, P.C.
                  800 Anacapa Street
                  Santa Barbara, CA 93101
                  Fax: (805) 568-1195

P&U:              Pharmacia &Upjohn Inc.
                  8484 U.S. 70 West
                  Clayton, NC 27520
                  Attention:
                  Fax: 919-553-3601

with copies,  in the case of notices  expressly  provided for in this Agreement,
to:

                  James F. Farrington, Jr.
                  Wiggin & Dana
                  301 Tresser Blvd.
                  Stamford, CT 06901
                  Fax: (203) 363-7676

or to such other  address as the  addressee  may have  specified  in notice duly
given to the sender as provided herein. Such notice,  request,  demand,  waiver,
consent,  approval or other  communications will be deemed to have been given as
of the date so delivered, telegraphed, telexed, or five days after so mailed.

     16.4 Severability. In the event that any provision of this Agreement, which
is not a  material  part of the  consideration  thereof,  shall  be found in any
jurisdiction to be illegal or unenforceable in law or equity, such finding shall
in  no  event   invalidate  any  other  provision  of  this  Agreement  in  that
jurisdiction,  and this Agreement  shall be deemed amended to the minimum extent
required to comply with the law of such jurisdiction.

     16.5 Entire Contract.  This instrument  states the entire agreement reached
between the parties hereto with respect to the transactions  contemplated hereby
and may not be amended or modified except by written instrument duly executed by
the parties hereto. Any and all previous  agreements and understandings  between
the parties  regarding the subject matter hereof,  whether  written or oral, are
superseded by this  Agreement.  The failure of either party hereto to enforce at
any time, or for any period of time, any provision of this  Agreement  shall not
be  construed  as a waiver  of such  provision  or of the  right  of such  party
thereafter to enforce each and every provision.

     16.6 Assignment,  Binding Effect. Neither party shall assign this Agreement
or any of their respective rights or obligations hereunder,  by operation of law
or otherwise,  without the prior written consent of the other party (which shall
not be unreasonably  withheld),  and any such attempted  assignment without such
consent shall be void. Notwithstanding the foregoing,  either party shall assign
this Agreement to a third party (and shall then be released from all liabilities
hereunder arising  thereafter) without such consent upon thirty (30) days' prior
notice,  if such  third  party (a)  acquires  (by  purchase  or  merger)  all or
substantially  all of such  party's  business and assets or, in the case of P&U,
the production  facility at Clayton,  N.C., and  substantially  all of the P&U's
assets  relating  thereto,  (b)  assumes  all of the  obligations  of such party
hereunder,  and (c) Miravant is provided reasonable assurances of performance of
all  obligations   hereunder  by  the  successor  to  P&U,  including,   without
limitation, protections that include P&U control of analytical methods, a direct
supply arrangement for Emulsions between such assignee and P&U or one or more of
its Affiliates (to the extent P&U or any of its Affiliates  then have any rights
under separate  agreements  with Miravant to sell the Emulsion) and for Emulsion
also to be provided  to  Miravant  and other  assurances  commensurate  with the
release of liability of P&U as set forth  above.  In no event shall  Miravant so
assign this  Agreement to a third party which is an Emulsion  Competitor  at the
time of such  assignment.  No assignment  shall be effective  until the assignee
shall have unconditionally  assumed in writing all of the assignor's obligations
hereunder and a written  notice of such  assignment is given to the other party.
When duly assigned in accordance  with the foregoing,  this  Agreement  shall be
binding  upon and inure to the  benefit of P&U,  Miravant  and their  respective
successors and permitted assignees.

     16.7 Independent Contractor.  Each party shall be and shall endeavor to act
as the  independent  contractor  of the other party.  Neither party shall be the
legal agent of the other for any purpose  whatsoever  and therefore has no right
or authority to make or underwrite any promise,  warranty or representation,  to
execute any contract or otherwise to assume any obligation or  responsibility in
the name of or in behalf of the other party,  except to the extent  specifically
authorized in writing by the other party. Neither of the parties hereto shall be
bound by or liable to any third  persons  for any act or for any  obligation  or
debt  incurred  by the other  toward  such  third  party,  except to the  extent
specifically agreed to in writing by the party so to be bound.

     16.8  Headings.  All section  headings  contained in this Agreement are for
convenience  of reference  only, do not form a part of this  Agreement and shall
not affect in any way the meaning or interpretation of this Agreement.

     16.9 Future  Modifications.  The parties acknowledge that the non-financial
terms hereof relating to the manufacturing of the Product,  including  delivery,
storage,  manufacturing  method and quality  control,  are based on the parties'
current best estimates of expected conditions, which estimates were derived from
laboratory test results and P&U's commercial  experience with other fat emulsion
products.   After  filing  the  first  NDA,  the  parties   shall  discuss  such
non-financial  terms and  appropriate  changes as may be reasonably  required in
view of the actual commercial manufacturing requirements. In no event shall such
adjustments apply to Miravant's compensation obligations.



                                        PHARMACIA & UPJOHN CO.



                                        By: /S/
                                            ------------------------------------

                                        Name:  _________________________________

                                        Title:   _______________________________



                                        MIRAVANT MEDICAL TECHNOLOGIES



                                        By: /S/
                                            ------------------------------------

                                        Name:  Gary S. Kledzik

                                        Title: Chairman of the Board and

                                               Chief Executive Officer





<PAGE>


               
                                                                       EXHIBIT 1

                                  DEFINED TERMS



1.1 "Act" means the United States  Federal Food,  Drug & Cosmetic Act (21 U.S.C.
Section 301 et seq.), or any successor act, as the same may be amended from time
to time, and the regulations promulgated thereunder.

1.2  "Affiliate"  means any  person,  firm or  corporation  which,  directly  or
indirectly,  through one or more intermediaries,  controls, is controlled by, or
is under common  control  with, a party,  but only so long as such  relationship
exists.  "Control"  means the legal or  beneficial  ownership of more than fifty
percent (50%) of the voting or equity  interests or the power or right to direct
the  management  and affairs of the  business  (including  acting as the general
partner of a limited partnership).

1.3 "Agent"  means  Miravant's  tin ethyl  etiopurpurin  compound  suitable  for
intravenous administration in a lipid emulsion formulation.

1.4 "Compound"  means any  photosensitizing  agent (other than the Agent),  or a
derivative or ***** of such photosensitizing  agent or the Agent, which Miravant
has the right to use and which is suitable for intravenous  administration  in a
lipid emulsion formulation.

1.5 "Data" means all books,  records,  reports, lab notebooks,  charts,  graphs,
computations,   analyses,   recordings,   photographs,   computer  programs  and
documentation  thereof,  computer information storage means and other graphic or
written data generated in the performance of the Development Work, including any
data required to be maintained pursuant to applicable FDA regulations.

1.6 "Development  Technology" means all Inventions,  to the extent embodying the
composition or manufacture of any Emulsion,  conceived or reduced to practice by
P&U, Miravant and their respective Affiliates, or any of them, either separately
or  jointly  with one  another,  during  the  course of the  performance  of the
Development Work.

1.7 "Development Work" means the program of work previously undertaken by P&U on
behalf of  Miravant in  connection  with the  development  of  formulations  for
Emulsions suitable for intravenous  administration of a photodynamic therapeutic
compound and the additional work described in Section 2.1.

1.8 "Emulsion" means a lipid emulsion suitable for intravenous administration of
the Agent.

1.9 "FDA" means the United States Food and Drug  Administration or any successor
agency having the administrative  authority to regulate the approval for testing
or marketing of human  pharmaceutical or biological  therapeutic products in the
United States (or, where appropriate,  the equivalent  governmental authority in
any foreign country).

1.10     "FDA Approval" means approval by the FDA of Miravant's NDA.

1.11 "GLP" means the applicable  current good laboratory  practices  promulgated
from time to time by the FDA in  accordance  with the Act,  including  those set
forth in 21 CFR Part 58.

1.12 "GMP" means the applicable current good manufacturing practices promulgated
from time to time by the FDA in  accordance  with the Act,  including  those set
forth in 21 CFR Parts 210 and 211.

1.13 "IND" means an  investigational  new drug application  submitted to the FDA
under  21 CFR 312 for the  purpose  of  conducting  clinical  investigations  of
Emulsions containing the Agent (or the equivalent in any foreign country).

1.14 "Invention"  means any invention which may be protectable by patents in the
country in which the invention was made, whether or not patent  applications are
filed.

1.14A  "Initial  Facility"  means the small  batch  production  facility  at the
Clayton  Facility used for the production of clinical  materials of the Emulsion
and which shall be used to produce the initial  requirements of the Product,  up
to ***** Units.

***** Confidential Treatment Requested
<PAGE>


1.15 "Know-How" means all inventions (whether or not patentable), trade secrets,
technical  and  other  information  and  data,  including,  without  limitation,
formulae; compositions;  processes; controls; systems (including QA systems) and
procedures;  apparatus;  correlations; flow sheets; reports; operating, test and
performance data; and process, mechanical, material and product specifications.

1.16 "NDA" means a New Drug Application or other premarket approval  application
to sell the Product,  and any  supplement or  abbreviated  application  relating
thereto,  submitted to the FDA by or on behalf of Miravant (or the equivalent in
any foreign country).

1.17  "Packaging  Specifications"  means the  packaging,  labeling  and shipping
specifications for the Product determined by Miravant and approved by P&U.

1.18 "Patents" means patents of all countries,  including  improvement  patents,
patents of addition, patents of importation,  certificates of invention, utility
model and design patents, and all reissues, renewals and extensions thereof; and
applications for such patents, including original, divisional,  continuation and
continuation-in-part applications pending before any patent office.

1.19 "Miravant  Technology"  means all Patents and Know-How owned or licensed by
Miravant or any of its Affiliates  relating to the composition or manufacture of
the Agent and any Compounds,  including,  to the extent Miravant is permitted to
grant a sublicense  to P&U, any Patents or Know-How  licensed by Miravant from a
third party.

1.20 "P&U  Technology"  means all Patents and Know-How  (other than  Development
Technology)  owned or licensed by P&U or any of its Affiliates which: (a) relate
to the  composition  or  manufacture  of  phospholipid,  soybean  oil  or  other
proprietary raw materials;  or (b) are used by P&U to manufacture  (including to
sterilize) any Emulsion or other emulsion product,  including,  in each case, to
the extent P&U is permitted to grant a  sublicense  to Miravant,  any Patents or
Know-How licensed by P&U from a third party (the Patents and Know-How  described
in subsection (b) are referred to as "P&U Emulsion Technology").

1.21  "Product"  means the  injectible  formulation  in final dosage form of the
Agent suspended in an Emulsion described in the Product Specifications.

1.22 "Product Specifications" means the specifications for the Product specified
by Miravant in its NDA and approved by the FDA and P&U, and any modifications or
changes thereto specified by Miravant and approved by the FDA and P&U.

1.23 "Project Leaders" means the individual designated by P&U and the individual
designated by Miravant having the authority,  obligations  and  responsibilities
referenced in Section 3.2 hereto.

1.24  "Proprietary  Information"  means all  Know-How or other  confidential  or
proprietary information:

     (a)  relating  to the  composition,  manufacture  or use of the Agent,  any
Compound, any Emulsion, the Product or P&U's other emulsion products;

     (b) designated in writing by either party as  confidential,  proprietary or
not  to be  disclosed,  whether  by  letter  or by  the  use  of an  appropriate
proprietary  stamp or  legend,  prior to or at the  time  any such  Know-How  or
confidential or proprietary  information is disclosed by one party to the other;
or

     (c) which is orally or visually  disclosed  (including  the  observation of
process equipment at the Clayton  Facility),  or is disclosed in writing without
an appropriate  letter,  proprietary  stamp or legend,  and which:  (1) would be
apparent  to  a  reasonable   person  familiar  with  the   pharmaceutical   and
biotechnology   industries  that  such  information  is  of  a  confidential  or
proprietary  nature, or (2) the disclosing party,  within thirty (30) days after
such  disclosure,  delivers  to the  recipient a written  document or  documents
describing  such  information  and  referencing the place and date of such oral,
visual or written  disclosure  and the names of the employees or officers of the
recipient to whom such disclosure was made.

Proprietary  Information shall not include any Know-How or other confidential or
proprietary information which:

         (A) either before or after the date of the  disclosure to the receiving
         party  becomes  published or generally  known to the public  through no
         fault  or  omission  on the  part  of the  receiving  party,  but  such
         inapplicability  applies  only after such  information  is published or
         becomes generally known;

         (B) was  known  or used by the  receiving  party  prior  to its date of
         disclosure to the receiving party by the disclosing party, as evidenced
         by the prior written records of the receiving party;

         (C) either before or after the date of the  disclosure to the receiving
         party is lawfully  disclosed to the receiving  party by an independent,
         unaffiliated  third party  rightfully in possession of the  proprietary
         information; or

         (D) is independently developed by the receiving party without reference
         to or  reliance  upon any  proprietary  information  of the  disclosing
         party.

1.25  "Reprocessing"  means the  performance  of any  procedures or processes in
connection  with the  manufacture  of the Product not  normally  required in the
manufacture  of the Product which would  require a regulatory  submission to the
FDA or the initiation of additional stability studies.

1.26  "Specifications"  means  the  Product  Specifications  and  the  Packaging
Specifications.

1.27  "Unit"  means a  container  having a volume of ***** of Product  (emulsion
containing  ***** of  emulsion),  or such other volumes as the parties may agree
from to time.

1.28  "Other  Definitions"  The  following  terms are  defined in the  indicated
Sections of the Agreement:

               Term                               Section

               Clayton Facility                   2.4

               DMF                                2.5

               Initial Facility                   2.2

               Supply Price                       7.1



***** Confidential Treatment Requested
                               


<PAGE>


                                                                              

                                                                       EXHIBIT 2



                          DEVELOPMENT WORK COMPENSATION


                                                          1998
         Personnel                                     Hourly Rate

Laboratory Technician                                  $*****
and Junior Scientist

Senior Scientist and                                   $*****
Project Manager

Such rates shall be subject to escalation on *****, and annually thereafter,  at
a rate not to exceed the percentage increase for the preceding twelve (12) month
period in the Consumer Price Index for All Urban Consumers  (U.S.  South Region)
issued by the Bureau of Labor Statistics, or comparable successor index.



***** Confidential Treatment Requested



<PAGE>
                                                                         
                                                                       EXHIBIT 3

                          TERMS AND CONDITIONS OF SALE

1. Storage Requirements. P&U shall maintain at all times during the term of this
Agreement adequate  inventories of all raw materials and packaging components in
a quantity sufficient so that delivery of all Product to the marketplace will be
made in a timely  manner.  Such  storage  requirements  shall be  limited by the
purchase forecasts furnished by Miravant pursuant to Section 5.1 hereof.  Unless
the parties  otherwise  agree,  P&U shall not be required to store any  finished
Product after  completion  of the release  tests  therefor or at other than room
temperature.  After successful  completion of release testing, P&U has the right
to ship the Product ordered by Miravant to Miravant in a commercially reasonable
manner.

2.  Samples.  P&U shall  retain at all times  during the term of this  Agreement
samples of each lot of active  ingredient and final dosage forms with respect to
the Product for time periods which are in accordance with GMP.

3. Product Recalls. In the event (i) any government  authority issues a request,
directive  or  order  that  Product  be  recalled,  (ii) a  court  of  competent
jurisdiction orders such a recall or (iii) Miravant reasonably  determines after
consultation  with P&U that Product  should be recalled,  the parties shall take
all  appropriate  corrective  actions.  Except  to the  extent  such  recall  is
attributable  to P&U's gross  negligence  or willful  misconduct  or a breach of
P&U's  warranties  under Section 11.1 hereof,  Miravant shall be responsible for
the cost of  notifying  end users  and costs  associated  with  shipment  of any
recalled  Product from end users.  To the extent such recall is  attributable to
P&U's gross  negligence or willful  misconduct  or a breach of P&U's  warranties
under Section 11.1 hereof,  P&U shall be  responsible  for the cost of notifying
end users and costs  associated  with shipment of any recalled  Product from end
users.  P&U and Miravant shall fully  cooperate with one another and provide all
reasonable  assistance  in conducting  any recall under this Section;  provided,
that P&U shall have no financial  obligation for recall expenses unless any such
recall is attributable to P&U under the above conditions.

4. General Obligations of P&U and Miravant.

     4.1 Except as  provided  in Section  5.5 of the  Agreement  and Section 8.2
hereof, all other materials required to manufacture,  test,  package,  label and
release the Product shall be supplied by P&U.

     4.2 P&U shall  manufacture the Product in accordance with, and conduct such
quality  assurance and other testing which  demonstrates that the Product meets,
the Specifications  and GMP. P&U shall not conduct  Reprocessing with respect to
the  Product  without the prior  written  approval  of  Miravant.  P&U shall not
release or distribute any Product to any third party,  or use the Product in any
way not  expressly  permitted in the  Agreement,  except with  Miravant's  prior
written consent.

     4.3  In  the  event   P&U's   manufacturing   facility  is   inspected   by
representatives  of any federal,  state or local regulatory agency in connection
with P&U's manufacture of the Product, P&U shall notify Miravant immediately (by
telephone and, if possible,  in writing) upon learning of such  inspection,  and
shall  supply  Miravant  with  copies  of  any  correspondence  or  portions  of
correspondence which relate to the Product. Miravant may send representatives to
the  manufacturing  facility  and may  participate  fully in any portion of such
inspection  relating to the Product (and shall do so, at P&U's request).  In the
event P&U receives any regulatory  letter or written  comments from any federal,
state or local  regulatory  agency in  connection  with its  manufacture  of the
Product  requiring  a response  or action by P&U,  including  but not limited to
receipt of a Form 483 (Inspectional  Observations) or a Warning Letter, Miravant
promptly  will  provide  P&U  with any data or  information  required  by P&U in
preparing any response  relating to P&U's  manufacture of the Product,  and will
cooperate fully with P&U in preparing such response.  P&U shall provide Miravant
with a copy of each such response for  Miravant's  review prior to submission of
the response.

     4.4  Miravant  shall  promptly  notify P&U of, and shall  provide  P&U with
copies of, any  correspondence and other  documentation  received or prepared by
Miravant  in  connection  with any of the  following  events:  (1)  receipt of a
regulatory  letter  from  the FDA in  connection  with  the  manufacture  of the
Product;  (2) any recall of the Product;  (3) the withdrawal of the Product from
the  market;  (4) any  change in  Miravant's  formulation  of, or  manufacturing
process for, the Agent,  (5) any change in Miravant's  labeling for the Product;
(6) any regulatory comments relating to the manufacture of the Product requiring
a response or action by Miravant.

     4.5  Miravant  shall  maintain  complaint  files  in  accordance  with  GMP
regulations.  P&U shall  promptly  provide to Miravant  copies of all complaints
received with respect to the Product as well as responses sent, if any. Miravant
shall  promptly  provide  P&U with  copies  of any  complaints  relating  to the
manufacture   of  the  Product   received  by  Miravant.   Miravant  shall  have
responsibility for reporting all complaints  relating to the Product,  including
complaints relating to the manufacture of the Product, to the FDA.

     4.6 P&U shall  maintain  all  manufacturing  and  analytical  records,  all
records of shipments of the Product from P&U, and all  validation  data relating
to the Product for the time periods  required by applicable laws and regulations
and shall  make such data  available  to the FDA upon  Miravant's  request or if
required by law.

5. Orders.

     5.1 Forecasts.  Beginning  with the first day of the quarter  following the
quarter in which  Miravant's  NDA for the Product is  approved,  Miravant  shall
provide  quarterly its estimated  forecast of  requirements  for the Product for
each of the *****  following  the end of the  quarter in which such  forecast is
submitted  (each a  "Forecast").  The  monthly  sales  quantities  shown  in the
Forecast for the ***** shall be considered a firm purchase order.  All Forecasts
under this Agreement and updates thereof for any period after the ***** shall be
for the sole purpose of assisting P&U in its planning and will not constitute an
obligation  of  Miravant  to  purchase  the  quantities  of  Product  indicated;
provided, however, that the total quantity of Product ordered by Miravant in any
quarter shall not exceed Miravant's most recent estimated  quantity by more than
***** without P&U's prior written consent. Miravant and P&U shall each cooperate
to attempt to meet each others  needs in  connection  with the  manufacture  and
supply of Product for  Miravant's  launch and the months  following FDA Approval
before the Forecasts are applicable.  As soon as  practicable,  P&U and Miravant
shall agree upon actual  delivery  times based upon  scheduling  and  production
results determined during the Development Work.

     5.2 Purchase  Orders.  Except to the extent the parties may otherwise agree
with respect to a particular shipment,  the Product shall be ordered by Miravant
pursuant to written  purchase  orders,  which shall be sent to P&U with not less
than the number of days "lead  time" prior to  delivery  dates  agreed on by the
parties for delivery times based on scheduling and production results determined
during the  Development  Work,  as  provided  in Section  5.1 above.  Subject to
Section 5.1, upon receipt of each purchase order hereunder, P&U shall supply the
Product,  in such  quantities  and  within  the time  period  specified  in such
purchase order.  During the period of time that the Initial Facility is used for
commercial  use, P&U may produce up to ***** Units in each  production run of up
to *****  duration.  Miravant's  order  requirements  shall be  subject  to such
production  limits.  When the Initial Facility is modified or another production
line or facility is used to produce  larger  quantities (as described in Section
5.1 of the Agreement),  the parties shall establish other  production  limits to
allow efficient utilization of such larger facility.

     5.3  Emergency  Orders.  In the event  Miravant  experiences  an  emergency
backorder or other emergency situation,  Miravant may place one or more purchase
orders for  amounts of Product  exceeding  the amounts  P&U would  otherwise  be
obligated to supply under this  Agreement,  or  specifying a "lead time" of less
than the "lead time"  agreed to by the  parties  pursuant to Section 5.1 hereof.
P&U shall use all  reasonable  efforts to accommodate  such  emergency  purchase
orders  according  to their terms;  and in the event P&U does supply  Product in
accordance with the terms of such an emergency  purchase  order,  any additional
costs  incurred and  documented  by P&U in  connection  with the filling of such
emergency purchase order shall be reimbursed by Miravant.

6.  Shipment.  Product  shall  be  shipped  in the  manner  and to the  location
specified by Miravant. All Products shall be delivered Ex Works Clayton Facility
(INCOTERMS 1990), or as otherwise agreed to by the parties.

7. Claims.

     7.1 In the event that any of the Product delivered to Miravant by P&U shall
fail to conform with the permissible quantity requirements of any purchase order
or warranties  set forth in Section 11.1 hereof,  Miravant  shall be entitled to
reject  such  Product by giving  written  notice to P&U within  thirty (30) days
after  Miravant's  receipt of such  Product.  Any notice given  hereunder  shall
specify  the  manner in which the  Product  fails to  conform  to such  quantity
requirements or warranties.  If it is determined that the  nonconformity  (i) is
due to damage to the Product caused by (a) Miravant or (b) any carrier,  or (ii)
results  from the Agent  supplied by  Miravant,  P&U shall have no  liability to
Miravant  with respect  thereto.  If such  nonconformity  is caused in any other
manner,  P&U shall  credit  Miravant's  account for the price  invoiced for such
nonconforming  Products and Miravant's cost for the Agent supplied therefor.  If
payment  therefor has previously been made by Miravant,  P&U shall at Miravant's
option  pay  Miravant  the amount of such  credit or offset  the amount  thereof
against other amounts then due P&U. Except to the extent otherwise  specified in
Sections 11.1 and 12.1 hereof,  the foregoing  remedy  constitutes the exclusive
remedy  against P&U,  and the entire  liability  of P&U in  connection  with any
shipment.

     7.2 In any case where  Miravant  expects to make a claim  against  P&U with
respect to  nonconforming  Product,  Miravant  shall not dispose of such Product
without written  authorization  and instructions of P&U either to dispose of the
Product or to return the Product to P&U.

***** Confidential Treatment Requested
<PAGE>


8. Packaging.

     8.1 Containers.  P&U shall supply  containers  meeting FDA requirements and
Packaging Specifications for each Unit of Product, which Product shall be filled
into these containers and appropriately  sterilized and packaged for shipment to
Miravant pursuant to GMP and the Packaging Specifications.

     8.2 Labels.  Miravant shall supply in a timely manner all necessary  labels
(or label copy for  procurement  of labels by P&U) and  package  inserts for the
containers for each Unit of Product as well as for the shipping container, which
labels and package  inserts shall comply with  applicable FDA  requirements  and
shall be the only labels and package inserts used by P&U for Product. All labels
and labeling produced by P&U, including in terms of packaging layout, design and
color, shall be consistent with artwork supplied or approved by Miravant and P&U
shall  comply  with  Miravant's  requirements  concerning  labels and  labeling;
provided,  however,  that Miravant  shall consider in good faith any requests by
P&U as to  physical  dimensions  and  specifications  relating to the methods of
handling and affixing on containers.  In no event shall P&U be  responsible  for
the content of any label or otherwise  liable for any failure to supply adequate
warnings or to comply with the  requirements  of 21 CFR Part 201 relating to the
content of labels or package inserts.

9. Taxes. The actual amount of sales, use, excise, value-added and similar taxes
levied upon the  transfer of Product to Miravant  are payable by  Miravant.  Any
such tax may be contested with any assessing  governmental  authority so long as
Miravant agrees in advance to indemnify P&U therefor.  Property,  franchise, and
other business privilege-type taxes are not reimbursable by Miravant,  except as
they may be a  component  of  overhead.  P&U shall pay any  taxes  imposed  by a
government  on the income  resulting  from the sale of Product or the receipt of
payments  from  Miravant  hereunder,  including but not limited to gross income,
adjusted gross income,  supplemental net income, gross receipts,  excess profits
taxes or other similar taxes.

10. Late  Payments.  If payments are not made within  thirty (30) days after the
date when due, unless  contested in good faith,  Miravant shall pay, in addition
to the overdue payment, a late charge equal to the lesser of 1-1/2% per month or
the highest  applicable rate allowed by law on all such overdue amounts.  If, in
the reasonable  judgment of P&U, the financial condition of Miravant at any time
does not justify  continuation of such terms of payment,  P&U may demand full or
partial payment in advance.

11. Product Warranty.

     11.1  Product  Warranty.  P&U  warrants  that the  Product,  at the time of
shipment to Miravant, (a) will comply with the Specifications;  and (b) will not
be  products  that have been  adulterated  within the meaning of the Act, or any
applicable  state or local law  substantially  similar to the Act.  Product sold
hereunder shall have been manufactured, packaged, labeled, stored and shipped in
conformity with all applicable GMP requirements and with the Specifications; and
Product  sold  hereunder  shall have been  manufactured,  packaged and stored in
facilities  which  are  approved  by the FDA at the  time  of such  manufacture,
packaging  and  storage,  to the extent such  approval  is required by law.  The
foregoing  warranties  shall  not  apply  to  any  Product  to  the  extent  the
nonconformity or adulteration results from the Agent or other materials provided
by  Miravant  or was  manufactured,  packaged,  labeled,  stored and  shipped in
accordance with practices or other specifications  stipulated by Miravant. Title
to all Product sold hereunder shall pass to Miravant as provided herein free and
clear of any security interest, lien or other encumbrance.

     11.2 Remedy.  Should any failure to conform with the  foregoing  warranties
appear prior to the expiration date of the Product,  and if given prompt written
notice by Miravant,  P&U shall correct such nonconformity by, at its option, (1)
replacing  promptly  the  nonconforming  Product or (2)  refunding  promptly the
payments by Miravant for such nonconforming Product.

     11.3 Exclusive Warranties and Remedies.

          (a) No Other Warranties.  Except as expressly  provided for in Section
     11.1, P&U makes no  representations  or warranties of any nature whatsoever
     with respect to the Product,  any  Emulsions  or other  materials  supplied
     hereunder by it to Miravant or its licensees or  Affiliates,  and ALL OTHER
     WARRANTIES,   EXPRESS  OR  IMPLIED,   INCLUDING   IMPLIED   WARRANTIES   OF
     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED
     BY PHARMACIA AND ITS AFFILIATES AND THEIR SUBCONTRACTORS.

          (b)  Exclusive  Remedy.  Except as  otherwise  expressly  provided  in
     Section  12.1,  correction  of  nonconformities  in the  manner and for the
     period of time provided in Section 11.2 shall be the  exclusive  remedy and
     shall constitute fulfillment of all obligations to Miravant, its Affiliates
     and other  purchasers  of Product  directly  or  indirectly  from P&U,  its
     Affiliates  and their  subcontractors  (including any liability for direct,
     indirect,   special,  incidental  or  consequential  damages),  whether  in
     warranty,  contract,  negligence, tort, strict liability, or otherwise with
     respect to any  nonconformance of or defect or deficiency in the Product or
     other materials supplied hereunder by P&U or its Affiliates.

12. Indemnification.

     12.1  Indemnification  by P&U.  Subject to Miravant's  compliance  with its
obligations set forth in Section 12.4 below, P&U agrees to indemnify, defend and
hold  Miravant and its  Affiliates,  their  shareholders,  directors,  officers,
employees  and agents  harmless  from and against  any and all losses,  damages,
liabilities,  claims,  demands,  judgments,   settlements,  costs  and  expenses
(including,  without limitation,  reasonable  attorneys' fees and other costs of
defense) (collectively  "Losses") attributable to, or arising out of, any claim,
lawsuit or other action by a third party for personal  injury or property damage
to the extent caused by a breach of any P&U warranty or representation hereunder
or the gross  negligence or willful  misconduct of P&U in the manufacture of the
Product or any Emulsion.

     12.2  Indemnification  by Miravant.  Subject to P&U's  compliance  with its
obligations  set forth in Section  12.4  below,  Miravant  agrees to  indemnify,
defend and hold P&U and its Affiliates, their shareholders, directors, officers,
employees and agents  harmless from and against any and all Losses  attributable
to, or arising  out of (a) any claim,  lawsuit or other  action by a third party
for personal injury or property damage, arising out of or connected with the use
or sale of the Product or an Emulsion  (except for Losses  caused by P&U's gross
negligence or willful misconduct in the manufacture of the Product or Emulsion),
(b) Miravant's  negligence or willful misconduct,  or (c) breach of any Miravant
representation or warranty hereunder.

     12.3 Employees.  Except as otherwise provided in Section 12.1 or 12.2, each
party shall  indemnify  and hold the other party  harmless,  and hereby  forever
releases and discharges the other party,  from and against all claims,  demands,
liabilities, damages and expenses (including reasonable attorney's fees) arising
out of personal injury (including death) or property damage incurred or suffered
by the  indemnifying  party,  its  Affiliates,  contractors  or their  employees
(regular or contract)  arising out of or in connection  with the work  performed
hereunder,  except to the  extent  caused by the sole  negligence  of such other
party, its employees or agents.

     12.4 Notice and  Assistance.  A party (the  "indemnitee")  which intends to
claim  indemnification  under this  Section 12 shall  promptly  notify the other
party (the  "indemnitor")  in writing of any  action,  claim or other  matter in
respect of which the  indemnitee  or any of its  employees  or agents  intend to
claim such  indemnification.  The indemnitee  shall permit,  and shall cause its
employees and agents to permit, the indemnitor, at its discretion, to settle any
such action,  claim or other  matter and agrees to the complete  control of such
defense or settlement by the indemnitor; provided, however, that such settlement
does not  adversely  affect  the  indemnitee's  rights  hereunder  or impose any
obligations on the indemnitee in addition to those set forth herein in order for
it to exercise  such  rights.  No such  action,  claim or other  matter shall be
settled  without the prior written  consent of the indemnitor and the indemnitor
shall not be  responsible  for any legal fees or other costs incurred other than
as provided herein.

     12.5 Unenforceability.  The foregoing indemnity obligations of this Section
12 shall not be deemed to extend to any type of claim, act or omission by P&U or
Miravant for which the  indemnity  obligation  would be void,  unenforceable  or
otherwise not  permitted by applicable  law, and if any are deemed to so extend,
it shall be interpreted and restricted to the extent to which it is permitted by
applicable law.

13. Compliance with Law.

     13.1 Scope.  P&U and  Miravant  shall comply with all  applicable  federal,
state and local laws,  regulations and executive orders insofar as applicable to
the performance of their respective obligations  hereunder.  Notwithstanding the
foregoing,  Miravant  shall  be  solely  responsible  for  compliance  with  all
applicable regulatory  requirements  relating to the registration,  advertising,
sale,  adverse reaction  reporting and other activities  concerning the Product,
including,  but not  limited  to,  compliance  with  applicable  FDA  and  other
regulatory  authorities'  requirements;  provided,  that P&U shall  comply  with
applicable GLP/GMP  requirements as provided in Section 2.1 of the Agreement and
Section 12.1 hereof.

     13.2  Assistance  by Miravant.  Miravant  and P&U shall  furnish each other
reasonable  assistance for compliance with Section 13.1 above to the extent such
compliance  involves the  composition,  toxicity,  safety and other  chemical or
physical  characteristics  of the  Agent  or any  Emulsion,  including,  but not
limited to, furnishing to the extent  reasonably  available to it, the technical
data required by all environmental, health, safety and fire laws.
<PAGE>


14. Insurance.

     14.1 Scope.  Both parties shall maintain  insurance during the term of this
Agreement  with policy  limits and coverage as are  customary in the  respective
party's  business  and  reasonably  adequate  to cover  all  perils  customarily
protected against in performing their respective  obligations hereunder or while
visiting any facility in connection with this  Agreement.  Subject to reasonable
self-insurance  limits,  such  insurance  shall  include the  following  minimum
coverage and policy limits:  (a) Workers'  Compensation  in accordance  with all
applicable  statutory  requirements;  (b) Employer's  Liability in an amount not
less than *****; (c)  Comprehensive  General  Liability,  including  Independent
Contractor's   Liability,   Contractual   Liability  and  Products  -  Completed
Operations  Liability,  as well as coverage on all  equipment  (other than motor
vehicles  licensed for highway use) owned,  hired or used in performance of this
Agreement  in an amount  not less than  *****  combined  single  limit;  and (d)
Automobile  Liability,  covering all motor vehicles owned,  hired or used, in an
amount not less than ***** bodily  injury and property  damage  combined  single
limit each occurrence;  provided, that the limit of the insurance referred to in
clause (c) may be ***** prior to commencing  *****.  In the event such insurance
or the specified  limits  thereof are not  commercially  available at reasonable
premiums,  the parties shall discuss alternate forms of protection and shall not
withhold consent to any reasonable alternative.

     14.2  Evidence of  Insurance.  Both parties  shall  furnish the other party
certificates of insurance evidencing the foregoing coverage,  which certificates
shall  provide:  (a) that the insurer will provide  thirty days' written  notice
prior to any  cancellation;  and (b) without  limiting either party's  indemnity
obligations  hereunder,  that the other  party  shall be named as an  additional
insured for the original insured's acts or omissions.


***** Confidential Treatment Requested



<PAGE>




                                                                       EXHIBIT 4
*****

(b)  Accounting Standards and Procedures.

     (1)  Except as  otherwise  stated  herein,  the  Production  Cost  shall be
          determined  in accordance  with  generally  accepted  cost  accounting
          principles   applied  on  a   consistent   basis  in  the  country  of
          manufacture.  *****,  the parties shall determine the variance between
          the  aggregate  of  the  actual  Production  Cost  and  the  aggregate
          Production  Cost paid by Miravant  for Product  purchased  during such
          year.  If such  variance is positive,  Miravant  shall pay such amount
          within  thirty  days of receipt of  invoice;  and if such  variance is
          negative,  P&U shall issue Miravant a credit.  Production Cost for the
          succeeding  ***** shall be based on the actual  Production  Cost *****
          with  appropriate  standard cost  adjustments for Miravant's  purchase
          forecasts,  planned  manufacturing  efficiencies,  and  expected  cost
          variations in raw materials, labor and overhead.

     (2)  Any method of allocating a particular  cost under this Agreement shall
          be consistent  with the method of  allocating  that cost for any other
          product  manufactured  at that same location.  For any materials which
          are purchased by P&U for both its own products and for Product, except
          with respect to emulsifier and other materials  manufactured by P&U or
          any of its Affiliates, the cost to Miravant shall not be more than for
          P&U's own products.

     (3)  As used herein,  "cost" for purchased  materials or services means the
          actual  amount  paid  therefor  including  the  benefit  of any  price
          reductions, payment or terms discounts, or other reimbursements,  such
          as volume discounts,  which may be applicable to such purchases by any
          arrangement with the supplier.

     (4)  In no event shall reimbursement for costs or overhead be duplicated in
          any manner.

     (5)  Overhead  shall be  allocated  in a  manner  consistent  with  similar
          Clayton  Facility  products and in accordance with generally  accepted
          cost accounting methods applied on a consistent basis.

(c)  Books and Records.  P&U shall maintain adequate books and records to verify
     the calculation  and derivation of Production  Cost. Such books and records
     shall  be  available  for   inspection   and  audit  by  Miravant  and  its
     representatives at reasonable times and on reasonable notice, but not later
     than the end of the  second  calendar  year  after  the  year in which  the
     records are  generated,  for the purpose of verifying  reports and payments
     due  hereunder.  In the event  such  inspection  and audit  should  show an
     variance with the Production Cost actually paid by Miravant,  such variance
     shall be paid promptly by payments by P&U or Miravant, as the case many be,
     and if such variance should be more than five percent (5%) of the aggregate
     Production Costs paid during the respective period, P&U shall also bear the
     expenses incurred for said audit.


***** Confidential Treatment Requested

<PAGE>


                                                                       EXHIBIT 5

*****




***** Confidential Treatment Requested

    
                              RESTATED AND AMENDED





                        DEVELOPMENT AND LICENSE AGREEMENT


                                     between


                            PHARMACIA & UPJOHN S.p.A.


                                       and


                          MIRAVANT MEDICAL TECHNOLOGIES


                                  June 8, 1998




<PAGE>


                              RESTATED AND AMENDED
                        DEVELOPMENT AND LICENSE AGREEMENT


     THIS  RESTATED AND AMENDED  DEVELOPMENT  AND LICENSE  AGREEMENT is made and
entered into as of the 8th day of June,  1998 by and between  PHARMACIA & UPJOHN
S.p.A., an Italian  corporation  organized and existing under the laws of Italy,
with its head offices at via Robert Koch 1.2,  20152 Milan,  Italy  (hereinafter
referred  to  as  "P&U"),  and  MIRAVANT  MEDICAL  TECHNOLOGIES,  a  corporation
organized  and existing  under the laws of the State of Delaware,  with its head
offices at 7408  Hollister  Avenue,  Santa  Barbara,  California  93117,  U.S.A.
(hereinafter referred to as "MRVT").

                                WITNESSETH THAT:

     WHEREAS,  P&U is a pharmaceutical  company doing research,  development and
marketing of pharmaceutical products;

     WHEREAS,  MRVT is a pharmaceutical  and medical device company which, using
its  proprietary  technology  and  know-how,  has developed and will continue to
develop, on its own or in collaboration with third parties,  photoreactive drugs
and related  light  devices for the diagnosis and treatment of a wide variety of
diseases;

     WHEREAS,  P&U and MRVT are parties to a Development  and License  Agreement
dated July 1, 1995, as amended (the "License Agreement").

     WHEREAS,  the  experience  of the  parties  over  the  term of the  License
Agreement has given rise to the need to modify the License Agreement in order to
expedite  development and meet P&U's desire to be involved only in the Fields of
Oncology and Urology.

     WHEREAS,  the parties have agreed that, in lieu of the cumbersome structure
contemplated in the License Agreement,  MRVT will have full and complete control
of the  Development  Program for SnET2 for indications in the Fields of Oncology
and Urology and will pay for all expenses,  subject to payment by P&U to MRVT of
a  significant  portion  of the  expected  costs of the  Development  Program in
Oncology and Urology through June 30, 2000.

     WHEREAS, P&U's affiliate,  Pharmacia & Upjohn AB, will continue to have the
rights in the  Ophthalmology  Field pursuant to a mutually  agreeable  agreement
entered into on the date hereof.

     NOW,  THEREFORE,  in  consideration of the above premises and the covenants
contained herein, the parties hereto agree as follows:



<PAGE>



                             ARTICLE I - DEFINITIONS

     1.01  Affiliate.  "Affiliate"  shall mean,  with  respect to any  specified
party,  any person or entity  that  directly or  indirectly  through one or more
intermediaries,  controls,  or is controlled by, or is under common control with
the party specified.  For purposes of this definition,  "Control" including with
correlative meanings,  the terms "controlled by" and "under common control with"
means  ownership  directly or indirectly of more than fifty percent (50%) of the
equity  capital  having the right to vote for election of  directors  (or in the
case  of  an  entity  other  than  a  corporation,   the  equivalent  management
authority).

     1.02   Agreement.   "Agreement"   shall  mean  this  Restated  and  Amended
Development  and License  Agreement.  The term  "Ancillary  Agreements," as used
herein,  shall  mean the  following  related  agreements:  SnET2  Device  Supply
Agreement,  dated July 1, 1995, as amended,  and the Product  Supply  Agreement,
dated July 1, 1995, as amended.

     1.03 Clinical  Tests.  "Clinical  Tests" shall mean any tests  performed on
humans in preparation and support of regulatory submissions.

     1.04  Development   Program.   "Development   Program"  shall  *****.

     1.05 Effective Date. The term "Effective Date" shall mean January 1, 1998.

     1.06  FDA.  The term  "FDA"  shall  mean the  United  States  Food and Drug
Administration  or any successor agency having the  administrative  authority to
regulate  the  approval  for testing or  marketing  of human  pharmaceutical  or
biological medical products and/or medical devices in the United States or where
appropriate, the equivalent governmental authority in any foreign country.

     1.07  Fields.  The term  "Fields"  shall  mean the fields of  Oncology  and
Urology.

     1.08 Gross Sales.  "Gross Sales" shall mean the final gross  invoiced price
from the sale of Product by P&U and its  Affiliates or  Sublicensees;  provided,
however, that Gross Sales shall exclude sales of Products which are intended for
resale between P&U entities, its Affiliates and Sublicensees.

     1.09 GCP. "GCP" shall mean current "good  clinical  practices" for carrying
out clinical  studies in humans as set forth in  regulations  promulgated by the
FDA as such  may be  amended  from  time  to time  or,  where  appropriate,  the
equivalent regulations  promulgated by the equivalent  governmental authority in
any foreign country.

     1.10  GLP.  "GLP"  shall  mean  current  "good  laboratory  practices"  for
conducting  nonclinical  laboratory  studies as set forth in regulations (21 CFR
Part 58)  promulgated  by the FDA as such may be  amended  from time to time or,
where  appropriate,  the  equivalent  regulations  promulgated by the equivalent
governmental authority in any foreign country.

     1.11 GMP.  "GMP" shall mean  current  "good  manufacturing  practices"  for
preparation of drug products as set forth in  regulations  (21 CFR Parts 210 and
211)  promulgated  by the FDA as such may be amended from time to time or, where
appropriate,   the   equivalent   regulations   promulgated  by  the  equivalent
governmental authority in any foreign country.

     1.12  Light  Devices.  "Light  Devices"  shall  mean the  instruments  that
produce, deliver or measure light for use with the Product.

     1.13 Major Countries. "Major Countries" shall mean the ***** and *****.

     1.14 Net Sales.  "Net  Sales"  shall mean Gross  Sales less the  following:
trade, cash and quantity  discounts;  returns,  normal trade allowances,  normal
charge-backs,  federal,  state, or other  governmental  rebates and adjustments;
taxes  on the  sale or  transportation  absorbed  by P&U;  and  sales  to  P&U's
Affiliates or third parties of Product not for resale in the Territory

     1.15 New SnET2.  "New  SnET2"  shall  mean the  Photodynamic  Therapy  drug
designated by MRVT as tin ethyl  etiopurpurin  in any  formulation  or strength,
other than SnET2, as defined in Section 1.21.

     1.16 NDA.  "NDA"  shall mean a "New Drug  Application"  or other  premarket
approval  application for Product and any supplement or abbreviated  application
relating thereto, submitted to the FDA or its equivalent in any foreign country.

***** Confidential Treatment Requested
<PAGE>


     1.17  Patent  Rights.  "Patent  Rights"  shall mean all  United  States and
foreign   patent   applications,   as  well  as   continuation,   divisional  or
continuation-in-part  applications,  and all patents issuing therefrom including
reissue or reexamination patents containing at least one claim covering Product,
its use or sale,  and only to the extent  such  Patent  Rights are  directed  to
Product,  which Patent Rights are now or hereafter  owned or acquired by MRVT or
any of its  Affiliates,  or  licensed to MRVT or any of its  Affiliates.  Patent
Rights  licensed to MRVT will only be granted to P&U to the extent  permitted by
MRVT's license agreement and P&U will do nothing to disturb such agreement. 1.18
Photodynamic  Therapy.  "Photodynamic  Therapy"  shall  mean  the  technique  of
diagnosis  and/or  treatment  of  abnormal  or  normal   biological  or  medical
conditions, either in-vivo or ex-vivo, through the use of drugs activated by any
type of electromagnetic radiation or magnetic field.

     1.19 Preclinical Tests.  "Preclinical  Tests" shall mean any nonhuman tests
performed in preparation and support of regulatory submissions.

     1.20 Product. "Product" shall mean pharmaceutical products for Photodynamic
Therapy  containing tin ethyl  etiopurpurin as the active drug substance and any
isomers and derivatives thereof, in any formulation, whether SnET2 as defined in
Section 1.21 or New SnET2 as defined in Section 1.15.

     1.21 SnET2.  "SnET2" shall mean the Photodynamic Therapy drug designated by
MRVT as tin ethyl  etiopurpurin  in the injectable  lipid  emulsion  formulation
being tested in clinical trials as of the Effective Date, regardless of the vial
or other container size.

     1.22  Sublicensee.  "Sublicensee"  shall mean a third party to whom P&U has
granted,  in whole or in part,  the right to market or co-market  the Product in
one or more countries in the Territory and who performs selling  activities such
as invoicing customers in one or more countries in the Territory.

     1.23  Technology.   "Technology"   shall  mean  all  information  and  data
including,  but not limited to,  technical,  pharmacological,  toxicological and
clinical information, know-how, inventions and improvements possessed by MRVT as
of the  Effective  Date or generated or obtained by MRVT during the term of this
Agreement relating to the registration, manufacture, use, or sale of Product, in
each case to the extent MRVT has the right to provide the same to P&U hereunder,
provided however,  that  "Technology"  shall not include any such information or
data regarding the design or manufacture of any Light Device.

     1.24 Territory. "Territory" shall mean the entire world.

     1.25  Unit.  "Unit"  shall  mean *****.

                              ARTICLE II - NOT USED


                   ARTICLE III - LICENSE, GRANT AND ROYALTIES

     3.01 License. Subject to the terms of this Agreement. MRVT hereby grants to
P&U and P&U's Affiliates an exclusive worldwide, royalty-bearing,  license under
the Patent  Rights and  Technology,  to use,  distribute  and sell  Product  for
diagnosis  or  treatment  in the Fields in the  Territory.  P&U may  sublicense,
totally  or in part,  the  license  rights  granted  under  this  Section  3.01,
provided,  however, (i) P&U must notify MRVT, in writing, of any such sublicense
at least thirty (30) days in advance;  (ii) P&U remains  responsible to MRVT for
all contractual  obligations of the Sublicensee  including,  but not limited to,
payment of  royalties,  keeping of records  and  reporting  of sales,  as if the
Sublicensee's  sales were  P&U's  sales and (iii) the  Sublicensee  agrees to be
bound by the terms of this  Agreement  to the same  extent as P&U to the  extent
applicable to the Sublicensee.


     3.02 Term of License.  The license  rights granted under Section 3.01 shall
remain in effect in each country in the Territory for the duration of the Patent
Rights  or for a period of ten (10)  years  from the  first  commercial  sale of
Product in such country, whichever shall be longer. After this period, P&U shall
have an irrevocable, fully paid-up, nonexclusive license under the Technology in
such country.

     3.03 *****

          (a) *****

          (b) *****

          (c) *****

***** Confidential Treatment Requested
<PAGE>


     3.04  Development  Prograam - Expense.  P&U shall reimburse MRVT its actual
direct and indirect costs and expenses  incurred to perform the *****,  up to an
aggregate of Twenty Million Dollars (US)  ($20,000,000).  Such payments shall be
made in advance in quarterly  calendar  installments of Two Million Five Hundred
Thousand Dollars (US) ($2,500,000), commencing on July 1, 1998. *****.

     3.05 Royalties. P&U shall, for the term of the license specified by Section
3.02, pay MRVT royalties on Net Sales of Product to third parties at the rate of
***** on total Net Sales of Product of *****, per calendar year and a royalty of
***** on the part of total Net Sales of Product ***** per calendar year, subject
to the  provisions  of Section  6.03.  In a number of  countries  in *****,  P&U
operates through distributors, which are local companies appointed to manage the
importation,  distribution,  promotion and sale of P&U's products. Royalties due
to MRVT by P&U under this  Agreement on sales of Product in countries  where P&U
operates through  distributors shall be calculated on the F.O.B. prices at which
the Product is invoiced to distributors by P&U.

     3.06 Sublicense  Fees. P&U shall pay MRVT ***** of any up-front or lump-sum
fees received by P&U in consideration of the grant of a sublicense to Product.

     3.07 Payment of Royalties. The royalties due pursuant to Section 3.05 shall
be reported quarterly within thirty (30) days after March 31, June 30, September
30,  and  December  31.  Such  royalties  shall be paid to MRVT or its  designed
Affiliate  semi-annually within sixty (60) days after June 30 and December 31 of
each calendar year.  Each payment to MRVT or its designated  Affiliate  shall be
accompanied by a report containing sufficient  information to enable MRVT or its
designated  Affiliate to verify the accuracy of the  calculation of Net Sales on
which such payment was based during the payment period, including a statement of
Gross Sales and Net Sales and a  reconciliation  of the credits,  allowances and
rebates contemplated by Section 1.14 to calculate Net Sales from Gross Sales.

     3.08  Payment of  Royalties  and Fees.  For the purpose of  converting  and
paying  royalties and sublicense  fees specified by Section 3.06 herein,  monies
shall be first  computed in the  currency  of the  country  where the sales took
place or the  expense  was  incurred,  and  then,  unless  another  currency  is
designated  by MRVT,  converted  into US  dollars at the most  favorable  buying
exchange  rates  prevailing  on the day P&U converts the local  currency into US
dollars for payment to MRVT.

     3.09 P&U Ceases to Market or Sell  Product.  Subject to the  provisions  of
Section 5.06,  unless  otherwise  mutually agreed to by the parties and provided
that a  particular  Product  is sold or is to be sold in a Major  Country by one
party  only,  be it P&U or its  Affiliate  or a  Sublicensee,  should P&U or its
Affiliates  or  Sublicensee  cease to  market or sell a  Product  in that  Major
Country or fail to launch a  particular  Product in that  Major  Country  within
***** from the  occurrence  of the latest to occur of the  following  events (if
applicable  in such Major  Country):  (i) issuance of Product's  NDA approval in
that Country,  (ii)  governmental  price approval,  (iii)  reimbursement  of the
social  security  payment (if any),  and (iv) NDA approval of all relevant Light
Devices,  P&U shall have no further  rights to the  Product in that  country nor
shall P&U have any further  obligations for the Product in that country,  except
such  obligation  that  accrued  prior to  divestment  from P&U of rights to the
Product.  Subject to MRVT's  responsibility for regulatory matters, in the event
rights to Product are  divested  from P&U pursuant to this Section 3.09 and upon
MRVT's request,  P&U shall immediately transfer the NDA approval in that country
to MRVT or to an appointee of MRVT, provide to MRVT all data in P&U's possession
or control  relating  to that  Product  and take all such  other  actions as are
necessary  or useful to permit  MRVT to obtain  regulatory  approvals  to market
Product in such country. If P&U fails to comply with the foregoing within thirty
(30) business days after Miravant's notice, P&U hereby irrevocably appoints MRVT
as its attorney-in-fact to secure the transfer of the NDA approval to MRVT. MRVT
shall market the Product  under its own  tradenames  or brands and shall not use
P&U's  tradenames or brands.  Failure by P&U to launch a Product or interruption
of  marketing  or sale of a Product  pursuant to this  Section 3.09 shall not be
considered a breach of this  Agreement  within the meaning of Article X. For the
avoidance  of  doubt  it is  understood  between  the  parties  hereto  that the
provisions  of this  Section  3.09  shall not apply in the event that P&U or its
Affiliates or Sublicensees  cease to sell a Product or fails to launch a Product
in a Major  Country as described  above,  for reasons  related to the safety and
efficacy of a Product.

***** Confidential Treatment Requested
<PAGE>

     3.10 Books and Records.  P&U shall keep, and shall cause its Affiliates and
Sublicensees  to keep,  full,  true and  accurate  books of  accounts  and other
records, for a period of ***** containing  sufficient detail as may be necessary
for MRVT to properly  ascertain and verify the royalties payable to it hereunder
in  accordance  with  generally  accepted  accounting  principles.  Upon  MRVT's
request,  P&U shall permit an independent  certified accountant selected by MRVT
(except one to whom P&U has some reasonable  objection) to have access once each
year during  ordinary  business hours to such P&U records as may be necessary to
determine the  correctness of any report and payment made under this  Agreement.
If the audit shows that P&U has  underpaid any royalties by ten percent (10%) or
more, for any period covered by the audit, P&U shall, in addition to immediately
remitting to MRVT the amount of underpayment, pay for the cost of such audit. In
the event the audit shows that P&U has  overpaid any  royalties  due pursuant to
Section 3.05, P&U shall be allowed to deduct the amount of such overpayment from
the next semiannual royalty payment due to MRVT.


                        ARTICLE IV - DEVELOPMENT PROGRAM

     4.01  Development.  *****

     4.02  Preparation  of Regulatory  Filings.  MRVT shall be  responsible  for
preparing  and  filing  in its own name any  regulatory  filings  necessary  for
conducting Clinical Tests.

     4.03 MRVT  Responsibility.  MRVT shall be  responsible  for  conducting all
necessary  Preclinical  Tests  and  Clinical  Tests  for SnET2 to be used in any
indications  within the Fields,  and shall pay all costs and expenses to perform
such work, *****.

     4.04 New SnET2 for Any Indication. MRVT shall be responsible for conducting
all necessary  Development  Program work for any New SnET2 for any indication in
the Fields.  The Development  Program Expenses  associated with such Preclinical
Tests and Clinical  Tests shall be paid by P&U so long as such work is performed
in accordance  with the  development  plan accepted by P&U and such expenses are
incurred in accordance with the budget accepted by P&U.

     4.05  Submission  of NDA.  MRVT shall be  responsible  for  assembling  the
information  to prepare each NDA for a Product and to submit it to the concerned
health  authorities in the  Territory.  All such NDAs shall be filed in the name
of, and shall remain the sole and exclusive  property of, MRVT;  provided,  that
P&U shall have the right to control  all pricing  and  reimbursement  approvals.
MRVT shall be responsible for all reporting and other actions required to comply
with any  regulatory  requirements  applicable  to the holder of an NDA.  If P&U
markets  Product  for an  indication,  MRVT will file any  necessary  regulatory
notices to support  P&U's  marketing,  including in any country,  where  legally
required,   transferring   an  NDA  into  the  name  of  P&U.  *****  After  due
consideration of P&U's views and good pharmaceutical  practices, MRVT shall make
the final decisions on any NDA, other than pricing and reimbursement matters.

                        ARTICLE V - DUTIES OF THE PARTIES

     5.01  Promotion  and Customer  Service.  As MRVT's  exclusive  licensee for
Product in the Territory, P&U agrees to use all reasonable efforts to introduce,
promote,  market and sell  Product in the  Territory  for the Fields.  P&U shall
maintain adequate  facilities,  Product inventory and personnel to ensure prompt
handling and  servicing of customers'  inquiries and orders and prompt  shipment
and servicing of Product.

     5.02 Care of  Product.  P&U shall  comply  with all  applicable  regulatory
requirements  regarding  acceptable  methods  for care,  handling,  storage  and
shipment of Product. Each party hereby agrees that it shall promptly provide the
other, on request,  all information known to it that is necessary for compliance
with the applicable law and regulations concerning the care, handling,  storage,
labeling, packaging and shipment of Product.

     5.03 Exclusive.  During the term of this Agreement, unless otherwise agreed
to by MRVT, P&U shall not either directly, or indirectly,  develop or sell other
Photodynamic  Therapy  drugs in the Fields.  P&U agrees that it shall secure the
same  agreement  from its  Affiliates  and  Sublicensees.  P&U's  United  States
Affiliate's  rights under Section XI of the  Development  and Commercial  Supply
Agreement, between such Affiliate and Miravant, dated as of August 31, 1994 (the
"Clayton Agreement"), are expressly excluded from the provisions of this Section
5.03.

***** Confidential Treatment Requested
<PAGE>
     5.04  Authorization.  P&U and  MRVT  each  warrant  that  it has the  legal
capacity to enter into this  Agreement  and that it has  secured  all  necessary
approvals.

     5.05  Obligations  to  MRVT's   Licensor.   P&U  agrees  to  undertake  all
sublicensee  obligations  set forth in any license  agreement  MRVT entered into
relating to Patent Rights or Product as of the Effective  Date.  MRVT represents
and warrants  that it has fully  disclosed to P&U all such licenses in effect as
of the Effective Date.

     5.06 Sale of Product by MRVT. Subject to the terms of this Agreement,  MRVT
agrees,  while the license  granted to P&U under Article III hereof with respect
to any  Product  is in effect in any  country in the  Territory,  not to license
and/or appoint any other licensee, distributor or marketing representative in or
for such  country for such  Product,  not to sell such  Product in or for use in
such  country,  and not to accept  orders for such Product  from the  purchasers
located within such country or from  purchasers  MRVT has reason to believe will
sell such Product within or for use in such country,  except as provided in this
Section  5.06.  *****.

     5.07 Right to License Patent Rights,  Product and  Technology.  MRVT hereby
represents  and warrants  that it owns or has rights to use the  Technology  and
Patent Rights described  herein,  and that it has the right to grant sublicenses
under any license to SnET2 or covering Product held by MRVT.

     5.08  Compliance  with  Applicable  Law. In exercising  the rights,  and in
carrying out the duties and obligations set forth in this Agreement,  each party
represents and warrants that it shall comply with all applicable state,  federal
and country laws or rules.  Each party further  represents  and warrants that it
shall  comply  with  all  applicable   rules  and   regulations   governing  the
manufacture,  distribution,  promotion,  marketing  and sale of  Product  in the
Territory and that it shall  specifically  comply with GLPs, GCPs, GMPs or other
equivalent regulatory requirements of that country.

     5.09 Duty to  Develop  Product.  MRVT shall use all  reasonable  efforts to
develop Product in the Fields in accordance with the MRVT Development Plan.

     5.10 Patent Filing, Prosecution and Maintenance.  MRVT shall be responsible
for all decisions  relating to and all costs associated with preparing,  filing,
prosecuting  and  maintaining  the Patent  Rights.  MRVT shall timely notify P&U
about each patent  application  filed that relates to Product,  its progress and
subsequent disposition. MRVT shall not voluntarily abandon or forfeit any Patent
Rights,  without the prior approval of P&U, such approval not to be unreasonably
withheld or delayed.

     5.11 MRVT's Representations. MRVT hereby represents and warrants that:

          (a) It is not party to any  agreement,  arrangement  or  understanding
     with any third party that in any material way conflicts with its ability to
     fulfill any of its obligations under this Agreement.

          (b) It will not knowingly  commit any material act or fail to take any
     act which would cause a material  omission or permit any acts or  omissions
     to  occur  that  would  be in  conflict  with its  obligations  under  this
     Agreement or diminish in any material  respect the  potential  scope of the
     grant of rights to P&U under this Agreement.

          (c) It has no knowledge  that the license  rights  granted to P&U with
     respect to the Product shall be subject to any material  retained  right of
     any state, federal or foreign government or governmental entity, except for
     the rights of the United  States  government  under the  Bayh-Dole  Act and
     except as disclosed to P&U.

          (d) It has no  knowledge  that  making,  using or selling any Products
     (along or in  combination  with any Light  Devices) may infringe the patent
     rights of any third  party  nor does it have any  knowledge  that any third
     party is infringing the Patent Rights.

          (e) Other than as  disclosed  to P&U prior to July 1, 1995,  it has no
     agreement,  understanding or undertakings  with any third parties regarding
     ownership or disposition of tin ethyl etiopurpurin, isomers and derivatives
     thereof, or any Product.

***** Confidential Treatment Requested
<PAGE>
     5.12 Access to Information  Relating to Light  Devices.  MRVT shall provide
P&U with access to  information  or data  relating to Light Devices that P&U may
need to perform its  obligations  and exercise its rights  hereunder,  including
compliance  with any regulatory  requirements  and the marketing and sale of the
Products.

     5.13 Access to Light  Devices.  The parties  mutually  acknowledge  that an
essential  feature of the  development  of Product for  marketing  hereunder  is
access  by P&U to  Light  Devices.  MRVT  agrees  that it  shall  undertake  all
necessary  action to enable P&U to access  Light  Devices and to insure that P&U
has  continued  access to Light  Devices  during the term of the license  rights
specified by Section 3.02 and in accordance with the Ancillary Agreements.

                         ARTICLE VI - SUPPLY OF PRODUCT

     6.01 Commercial  Supply of Product.  P&U shall purchase from MRVT, and MRVT
shall supply P&U, all of P&U's  requirements  of Product in finished  form to be
sold by P&U in the Territory. P&U acknowledges that MRVT's obligations to supply
P&U with Product are dependent upon P&U's United States Affiliate fulfilling its
obligations to MRVT under the Clayton Agreement.

     6.02 Commercial  Transfer Price.  The "Transfer Price" for Product supplied
to P&U by MRVT shall be equal to the sum of the following:

          (a) *****

          (b) *****

     6.03 *****

*****

     6.04  Ownership of  Trademarks.  ***** The parties shall jointly select all
trademarks  to be used in  connection  with  the  Products  in the  Fields,  and
Miravant  shall not grant  rights to use such marks  outside the Fields  without
P&U's prior consent,  which consent shall not be  unreasonably  withheld if such
use is not likely to adversely affect the sales and marketing of the Products in
the Fields.  All  trademarks  related to SnET2 will be the property of MRVT, and
MRVT  will  indemnify  and  hold  harmless  P&U  from  and  against  any and all
infringement claims related to the trademarks.

                    ARTICLE VII - *****

     7.01*****

     7.02*****

     7.03  Limitation  of  Section  7.1.  Section  7.1  shall  not  apply to any
non-Photodynamic  Therapy drug or any product other than a New Product developed
by Miravant  and  Miravant's  grant of rights or licenses  with  respect to such
non-Photodynamic  Therapy drug or other  product shall not be limited by Section
7.01. Transfer of all or substantially all of the business or assets of Miravant
to a third party,  whether by merger,  acquisition  or  otherwise,  shall not be
deemed a grant to a third  party of a right or  license  with  respect  to a New
Product nor give rise to any right or  obligation  under  Section  7.01  herein.
Section  7.01 shall not apply to a New  Product  unless at the time the right of
first  negotiation  is offered the New Product is being  developed,  or Miravant
expects to develop, for an indication within the Fields.

***** Confidential Treatment Requested
<PAGE>

                   ARTICLE VIII - REGULATORY RESPONSIBILITIES

     8.01  Complaints.  MRVT and P&U shall  share  with  each  other all data on
complaints in respect of Product  subject to this Agreement  including,  but not
limited to,  complaints or information  regarding  performance or allegations or
reports of any effects on a patient  from use of such  Product,  as soon as such
data is available. To the extent that it has knowledge thereof, each party shall
promptly  notify the other in writing of any defect in, or condition of, Product
subject  to this  Agreement  that may  cause any such  Product  to  violate  the
applicable  laws and  regulations  of any  country in the  Territory  where such
Product  is  being  sold by  P&U.  As the  holder  of the  NDA,  MRVT  shall  be
responsible  for  complying  with all  regulatory  requirements  relating to the
reporting and processing of complaints and adverse events.

     8.02 Recall.  In the event of a total or partial  recall of Product sold by
MRVT to P&U under this  Agreement,  whether  voluntary  or mandated by law,  the
parties agree to cooperate fully to effect the recall.  In the event such recall
results from the gross negligence or willful misconduct of MRVT, MRVT shall bear
all the expenses  associated with such recall.  In the event such recall results
from the gross  negligence or willful  misconduct of P&U, P&U shall bear all the
expenses  associated  with such  recall.  If any recall  results  without  gross
negligence  or  willful  misconduct  of  either  party,  then MRVT and P&U shall
equally bear the expenses of such recall.  P&U agrees to maintain adequate sales
and service  records to enable it to carry out any Product recall and to conduct
such recall.

     8.03 Adverse  Reactions.  Each party shall be responsible  for  maintaining
such records and making such reports as may be required in  connection  with any
regulatory  approval held by the party. Each party shall immediately  inform the
other of all adverse drug experience  reports and other information  relating to
the safety or effectiveness of Product which come to its attention.

                  ARTICLE IX - PUBLICATION AND CONFIDENTIALITY

     9.01 Publication.  Each party hereto shall give ten (10) days prior written
notice to the other party of all SEC filings and public  announcements  relating
to the contractual  relationship  between the parties,  which will be subject to
reasonable  approval of the other party,  and if there is a dispute,  it will be
resolved by the opinion of the disclosing  party's counsel in their  discretion,
except that the other party shall resolve all disclosure issues relating to such
party's confidential information.

     9.02 Disclosure. MRVT shall disclose to P&U all information relating to the
Patent  Rights,  Technology  and Product for the Fields that has not  previously
been disclosed;  provided, however, that MRVT shall only be required to disclose
such  information  to P&U as is  necessary  or  useful  for P&U to  fulfill  its
obligations under this Agreement.  All information disclosed by one party to the
other under this Section  9.02 shall be deemed  "Confidential  Information"  and
treated as provided in Section 9.03 hereof.  P&U shall disclose to MRVT, or MRVT
shall have access to, information developed by P&U related to Product including,
but  not  limited  to,  all  regulatory   data   including   clinical  data  and
investigators' reports, applications and licenses.

     9.03 Confidential  Information.  Unless otherwise mutually agreed to by the
parties,   the  parties  agree  to  maintain  in  confidence  all   Confidential
Information  disclosed  to the other  pursuant  to  Section  9.02 and shall not,
during the term of this Agreement and for a period of five (5) years thereafter,
use such  Confidential  Information,  except as permitted  by this  Agreement or
disclose  the  same to  anyone  other  than  those of its  officers,  directors,
employees,  Affiliates and  Sublicensees  to the extent  necessary in connection
with either party's  activities as contemplated  in this  Agreement.  Each party
shall  use its  reasonable  efforts  to  ensure  that its  officers,  directors,
employees,  Affiliates and Sublicensees do not disclose or make any unauthorized
use of such Confidential Information.

     9.04  Limitations on  Confidentiality.  The  obligation of  confidentiality
contained  in Section  9.03  shall not apply to the  extent  that (i) a party is
required  to  disclose  information  by  applicable  law,  such as  pursuant  to
Securities  and  Exchange  Commission  rules  and  regulations,  or  order  of a
governmental  agency  or a court of  competent  jurisdiction;  (ii) a party  can
demonstrate  that the  disclosed  information  was,  at the time of  disclosure,
already in the public domain other than as a result of actions or failure to act
of a party, its officers, directors,  employees,  Affiliates and Sublicensees in
violation  hereof;  (iii) the disclosed  information  was rightfully  known by a
party or its Affiliates or Sublicensees  (as shown by its written records) prior
to the date of disclosure to the other party in connection  with this Agreement;
or (iv) the disclosed  information  was received by a party or its Affiliates or
Sublicensees on an unrestricted  basis from a third party source that is not the
other  party  or an  Affiliate  of the  other  party  and  not  under  a duty of
confidentiality, and that was rightfully known to said source.
<PAGE>


                        ARTICLE X - TERM AND TERMINATION

     10.01 Term.

          (a) Subject to the  provisions of Section 3.02 and this Article X, the
     term of this Agreement shall continue for so long as P&U is required to pay
     royalties.   Unless  terminated  earlier,  commencing  July  1,  2000,  and
     continuing every two years  thereafter,  the parties shall agree in writing
     upon their  respective  share of the funding for development of the Product
     in the  Fields  for the  following  24 months in  accordance  with the MRVT
     Development Plan.

          (b) *****

     10.02  Termination for Breach.  In the event either party shall  materially
breach any of the terms,  conditions and agreements contained herein to be kept,
observed and performed by it, then the other party may terminate this Agreement,
at its option and  without  prejudice  to any of its other  legal and  equitable
rights and remedies,  by giving the party which  committed the breach sixty (60)
days' notice of its intent to  terminate,  particularly  specifying  the breach,
unless the notified party within such sixty (60) day period shall have cured the
breach.  The sixty (60) day period may be extended for a period not exceeding an
additional ninety (90) days for breaches which cannot be reasonably cured within
the sixty (60) day period if the party has  commenced to cure the breach  within
that period.

     10.03  Termination  by  Bankruptcy.  In the event either party shall file a
voluntary petition or any answer admitting the jurisdiction of the Court and the
material  allegations of, or shall consent to, an involuntary  petition pursuant
to or purporting to be pursuant to any  reorganization  or insolvency law of any
jurisdiction, or shall make an assignment of substantially all of its assets for
the benefit of creditors,  or shall apply for or consent to the appointment of a
receiver or trustee of a substantial part of its property (such party,  upon the
occurrence of any such event, a "Bankrupt Party"),  then to the extent permitted
by law  the  other  party  hereto  may  thereafter  immediately  terminate  this
Agreement by giving  notice of  termination  to the Bankrupt  Party,  unless the
proceeding is dismissed within ninety (90) days of its filing.

     10.04  *****

     10.05  Effect  of  Termination.  It  is  understood  and  agreed  that  the
termination of this Agreement  shall not affect the rights or obligations of the
parties which (i) by the terms hereof,  continue  after the  termination of this
Agreement,  or (ii) have accrued prior to such  termination  including,  but not
limited to, the rights of MRVT to receive  any  amounts  then owing from P&U for
royalties  due  hereunder,  all of which amounts  shall be  immediately  due and
payable on such termination date. Upon termination of this Agreement, other than
under Section 10.01(a),  the Ancillary Agreements will also terminate in respect
to the  Fields.  Articles  VIII,  IX and XII shall  survive  the  expiration  or
termination of this Agreement.

***** Confidential Treatment Requested
<PAGE>

                        ARTICLE XI - PATENT INFRINGEMENT

     11.01 Infringement by Third Parties. If, during the term of this Agreement,
either MRVT or P&U shall acquire  knowledge or have reasonable  cause to believe
that any of the Patent  Rights,  as such Patent Rights cover  Product,  shall be
infringed or used without  authorization  by any other person in the  Territory,
either party shall  promptly  notify the other of such  knowledge.  MRVT and P&U
shall  promptly  meet to  discuss  the  commercial  impact of such  third  party
infringement  and the most efficient and  expeditious  manner to proceed against
said third party.

     11.02  Initiation  of Action by MRVT or P&U. MRVT may take all steps in its
name  which are  necessary  or  advisable  including,  without  limitation,  the
institution  of any action or  proceeding  for the  obtaining  of damages or the
enjoinment  of any such  infringement  and to prosecute,  settle,  compromise or
otherwise  dispose of the same.  MRVT shall be entitled to the full  recovery of
any money or other property  collected by way of judgment,  settlement  (whether
prior to or after the  institution of any action or proceedings) or otherwise on
any action  initiated by MRVT.  If MRVT does not commence  such an action within
one hundred  eighty  (180) days,  after a request to do so by P&U,  then P&U may
initiate an action or proceeding  for the obtaining of damages or the enjoinment
of any such  infringement  and to  prosecute,  settle,  compromise  or otherwise
dispose of the same.  P&U shall be entitled to the full recovery of any money or
other  property  collected by way of judgment,  settlement  (whether prior to or
after the  institution  of any action or  proceeding) or otherwise on any action
initiated by P&U. Each party agrees to reasonably cooperate with the other party
in any legal  proceeding  and to pay all its own costs  taken  pursuant  to this
Section 11.02.

     11.03 Claims  Against P&U or MRVT.  If any claim is made or action  brought
against P&U or MRVT based on the claim that P&U or MRVT is infringing  any third
party  patent  rights  by  virtue  of the  manufacture,  use or sale of  Product
hereunder,  P&U or MRVT shall  promptly so notify the other.  The parties  shall
then consult with each other as to the most efficient and  reasonable  course of
action to take  relative to such third party claim.  Each party hereto shall pay
its own expenses in defending  any such third party claim.  MRVT shall solely be
responsible  for any trademark  infringement  claims and for all damages claimed
against P&U and its Affiliates by any third party.

     11.04  Damages  Paid to Third  Party.  If, in any such action  described in
Section 11.03, a court of competent jurisdiction  determines that P&U or MRVT is
obligated  to pay  damages  to any third  person  (excluding  trademark  claims)
because  P&U or MRVT's  manufacture,  use or sale of a Product was held to be an
infringement of a third party right, the parties shall equally share such costs.

     11.05 Reduction of Royalties.  In the event the legal proceedings described
in Section 11.03 result in a settlement or other final action which requires P&U
to pay a royalty to a third party in order to  continue to use or sell  Product,
the royalty paid by P&U to MRVT for such  Product  shall be reduced by an amount
equal to one-half  (1/2) of the rate of the royalty  that P&U is required to pay
to such third party,  not to exceed fifty percent  (50%) of the  royalties  that
would be payable to MRVT.

                          ARTICLE XII - INDEMNIFICATION

     12.01  Indemnification.  Except for matters relating to indemnification for
infringement of intellectual property rights, as to which Article X shall be the
sole and exclusive provisions,  each party to this Agreement shall indemnify and
hold the other party  hereto  harmless  from and  against  any and all  actions,
causes of action, claims,  demands,  suits,  controversies,  damages,  verdicts,
judgments,  executions  and all  costs  and  expenses  in  connection  therewith
including,  but not limited to, reasonable  attorneys' fees, whether or not well
founded in fact or in law, brought or claimed by any third persons, which and to
the extent  thereof shall arise from any breach of this Agreement by or from the
negligent  acts or omissions of the  indemnifying  party under this Agreement (a
"Liability").  Except to the extent P&U is required to indemnify  MRVT under the
foregoing  sentence and to the extent  P&U's  Affiliate is required to indemnify
MRVT under the Clayton Agreement, MRVT shall defend, indemnify and hold harmless
P&U and its  Affiliates  and each of their  directors,  officers,  employees and
agents  against any and all claims,  costs,  liabilities,  damages and  expenses
(including  reasonable attorneys' fees) arising out of or incurred in connection
with the practice of the  licenses  granted  hereunder or the clinical  testing,
manufacture,  handling, ingestion,  distribution, sale, administration, or other
use  (including  any failure to warn or comply with any regulatory or applicable
legal requirements) of any Product or Light Device.

     12.02 Notice of Defense of Actions.  Each party shall give the other prompt
notice  of any  potential  Liability,  and  promptly  after  receipt  by a party
claiming  indemnification under this Section 12.02 of notice of the commencement
of any action,  such indemnified party will notify the indemnifying party of the
commencement of the action and generally summarize such action. The indemnifying
party shall have the right to  participate  in and to assume the defense of such
action with counsel of its choosing.  An  indemnifying  party shall not have the
right to direct the defense of such an action of an indemnified party if counsel
to such  indemnified  party has reasonably  concluded that there may be defenses
available to it that are different from or additional to those  available to the
indemnifying  party;  provided,  however,  that in such event,  the indemnifying
party  shall  bear  the  fees  and  expenses  of  separate  counsel   reasonably
satisfactory to the  indemnifying  party.  The failure to notify an indemnifying
party  promptly of the  commencement  of any such action if  prejudicial  to the
ability to defend such  action  shall  relieve  such  indemnifying  party of any
liability to the indemnified party under this Section 12.02, but the omission to
so notify the  indemnifying  party will not relieve such party of any  liability
that such  party may have to any  indemnified  party  otherwise  than under this
Section. No settlement of any claim or action may be made without the consent of
the indemnifying party (which shall not be unreasonably withheld or delayed).

                      ARTICLE XIII - RESOLUTION OF DISPUTES

     13.01  Arbitration.  Any and all disputes  arising out of or in  connection
with the  performance of this Agreement  shall be finally settled by arbitration
in accordance  with the rules of the American  Arbitration  Association,  except
that each party will be  entitled to select one (1)  arbitrator  and the two (2)
arbitrators  so  selected  shall  select a third  arbitrator  and if they cannot
agree,  then the third  arbitrator,  who shall  not be a citizen  of the  United
States or Italy, will be selected by the American Arbitration  Association.  The
arbitration  shall be held in New York,  New York.  The award  rendered shall be
final and binding upon the parties.  Judgment on any award may be entered in any
court having  jurisdiction  over the parties or their assets.  To the extent any
claims  relate  to  the  validity,   construction,   scope,   enforceability  or
infringement  of any Patent  Rights,  such  claim  shall not be  required  to be
submitted to arbitration hereunder and shall be resolved by a court of competent
jurisdiction.  The  costs of the  arbitration  shall be  shared  equally  by the
parties.

                           ARTICLE XIV - MISCELLANEOUS

     14.01 Force  Majeure.  Neither P&U nor MRVT shall be in default  under this
Agreement  nor  liable for any  failure  to perform or for delay in  performance
resulting from any cause beyond its reasonable control or due to compliance with
any regulations,  orders or act of any federal,  provincial,  state or municipal
government,  or any department or agency thereof,  civil or military  authority,
acts of God, fires, floods or weather,  strikes or lockouts,  factory shutdowns,
embargoes, wars, hostilities or riots.

     14.02 Taxes.  Each of the parties hereto shall be  responsible  for its own
taxes imposed as a result of the  performance by such party under this Agreement
including,  but not  restricted to, any sales tax, any tax on or measured by any
royalty or other payment  required to be made by it hereunder,  any registration
tax,  any tax imposed with respect to the granting of or transfer of licenses or
other rights hereunder or the payment or receipt of royalties hereunder. For the
avoidance  of any  doubt,  it is agreed  that any  withholding  tax  levied on a
payment  required  to  be  made  pursuant  to  this  Agreement,   shall  be  the
responsibility of the party receiving such payment.  The parties shall cooperate
fully with each other in obtaining  and filing all  requisite  certificates  and
documents with the  appropriate  authorities and shall use their best efforts to
take such further  action as may  reasonably be necessary to avoid the deduction
of any  withholding or similar taxes from any remittance of funds by P&U to MRVT
hereunder,  provided,  however,  that P&U may  withhold  tax it is  required  to
collect or pay on behalf of MRVT.

     14.03 Notices.  All notices,  proposals,  submissions,  offers,  approvals,
agreements, elections, consents, acceptances, waivers, reports, plans, requests,
instructions and other communications  required or permitted to be made or given
hereunder  (all  of  the  foregoing  hereinafter  collectively  referred  to  as
"Communications")  shall be in writing,  in the English  language,  and shall be
deemed  to have  been  duly made or given  when (i)  delivered  personally  with
receipt acknowledged,  (ii) mailed in any post office,  enclosed in a registered
or certified  postage-paid  envelope,  return receipt  requested,  (iii) sent by
facsimile,  telex or cablegram  (which shall  promptly be confirmed by a writing
sent by registered or certified mail, return receipt  requested) or (iv) sent by
a recognized courier (e.g., DHL, Federal Express,  etc.), in each case addressed
or sent to the parties at the following  addresses  and facsimile  numbers or to
such  other or  additional  address  or  facsimile  number  as any  party  shall
hereafter specify by Communication to the other party:

         P&U:                               Pharmacia & Upjohn S.p.A.
                                            via Robert Koch 1.2
                                            20152 Milan
                                            Italy
                                            Attn: President
                                            Fax #:   39 2 4838 2734

         With a copy to:                    Pharmacia & Upjohn S.p.A.
                                            via Robert Koch 1.2
                                            20152 Milan
                                            Italy
                                            Attn: General Counsel
                                            Fax #:   39 2 4838 2734

         MRVT:                              Miravant Medical Technologies
                                            7408 Hollister Avenue
                                            Santa Barbara, California 93117
                                            U. S. A.
                                            Attn: President
                                            Fax #: 805 685 2959



<PAGE>


         With a copy to:                    Nida & Maloney, P.C.
                                            800 Anacapa Street
                                            Santa Barbara, California 93101
                                            U. S. A.
                                            Attn: Joseph E. Nida
                                            Fax #: 805 568 1955

Notice of a change of address shall be deemed given when actually received.  All
other Communications  shall be deemed to have been given,  received and dated on
the  earlier  of:  (i) when  actually  received  or on the date  when  delivered
personally or (ii) one (1) day after being sent by facsimile, cable, telex (each
promptly  confirmed by a writing as aforesaid) or courier and seven (7) business
days after mailing.

     14.04 Relationship.  The relationship between the parties shall be governed
by the  terms of this  Agreement  and  shall  not  extend  to other  activities,
transactions  or  contracts.  Neither  party  hereto  is in any way  the  agent,
venturer or partner of the other party.

     14.05  Governing Law. The provisions of this Agreement shall be governed in
all  respects  by the laws of New  York  without  regard  to  conflicts  of laws
principles.

     14.06 Other  Instruments.  The parties hereto  covenant and agree that they
will  execute  such other and further  instruments  and  documents as are or may
become  reasonably  necessary  or  convenient  to  effectuate  and carry out the
provisions of this Agreement or may be reasonably requested by the other party.

     14.07  Legal  Construction.  In  case  anyone  or  more  of the  provisions
contained in this Agreement  shall be invalid or  unenforceable  in any respect,
the validity and  enforceability  of the remaining  provisions  contained herein
shall not in any way be  affected  or  impaired  thereby  and the  parties  will
attempt  to  agree  upon a valid  and  enforceable  provision  which  shall be a
reasonable  substitute for such invalid and unenforceable  provision in light of
the tenor of this  Agreement  and,  upon so  agreeing,  shall  incorporate  such
substitute provision in this Agreement.

     14.08 Entire Agreement, Modification,  Consents and Waivers. This Agreement
contains the entire  agreement of the parties with respect to the subject matter
hereof and no interpretation,  change,  termination or waiver of or extension of
time for performance under any provision of this Agreement shall be binding upon
any  party,  unless in  writing  and  signed by the party  intended  to be bound
thereby. In addition to this Agreement,  the parties have entered into two other
agreements,  namely,  the  Product  Supply  Agreement,  dated July 1,  1995,  as
amended,  and the SNET2 Device Supply  Agreement,  dated July 1, 1995. It is the
intent of the parties that the terms of these  Agreements be read as a whole and
as being  consistent  with one  another.  Receipt by any party of money or other
consideration  due under this  Agreement,  with or without  knowledge of breach,
shall not constitute a waiver of such breach or any provision of this Agreement.
Except as otherwise provided in this Agreement, no waiver of or other failure to
exercise any right under or default or extension of time for  performance  under
any provision of this Agreement  shall affect the right of any party to exercise
any subsequent right under any provision of this Agreement or otherwise  enforce
said provision or any other provision  hereof or to exercise any right or remedy
in the event of any other default, whether or not similar.

     14.09  Section  Headings:  Construction.  The section  headings  and titles
contained  herein are each for reference  only and shall not be deemed to affect
the meaning or interpretation of this Agreement.  The singular shall include the
plural,  the conjunctive  shall include the disjunctive and the masculine gender
shall  include  the  feminine  and neuter,  and vice  versa,  unless the context
otherwise requires.

     14.10  Amendment.  This  Agreement  may only be  amended  in  writing by an
agreement  designated as an amendment and executed by the parties hereto.  14.11
Limitation of Damages.  IN NO EVENT SHALL EITHER PARTY NOR ANY OF ITS RESPECTIVE
AFFILIATES  BE LIABLE TO THE OTHER PARTY OR ANY OF ITS  AFFILIATES  FOR SPECIAL,
INDIRECT,  INCIDENTAL OR CONSEQUENTIAL DAMAGES,  WHETHER IN CONTRACT,  WARRANTY,
TORT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE,  including, but not limited to,
loss of profits or revenue, loss of use of any equipment,  cost of capital, down
time costs, delays, or claims of customers of any of them or other third parties
for such or other damages.

                     ARTICLE XV - BINDING EFFECT: ASSIGNMENT

     15.01 Binding  Effect and  Assignment.  This  Agreement  shall inure to the
benefit of and be binding upon each of the parties  hereto and their  respective
successors  and  assigns.  Neither  this  Agreement,  nor any of the  right  and
obligations  under this  Agreement,  may be assigned,  transferred  or otherwise
disposed of by either party without the prior consent of the other party, unless
such assignment,  transfer or disposition is to a successor to substantially all
the business or assets of the transferor,  provided that such successor shall in
any event  agree in  writing  with the other  party to  specifically  assume all
obligations of the transfer or under this Agreement in a manner  satisfactory to
the other party.  Subject to the foregoing  limitations,  the Agreement shall be
binding upon and inure to the benefit of the  respective  successors and assigns
of the parties.

     15.02 Right to Seek Assurance. In the event all or substantially all of the
assets of either P&U or MRVT are  acquired by a third  party,  the  non-acquired
party  shall have the  absolute  right  pursuant  to Section  15.01 to receive a
binding written  assurance and undertaking  from such party that the third party
intends to faithfully  perform all of the duties and obligations of the acquired
party set for in this  Agreement.  The  acquired  party  shall  take all  action
necessary to enable the non-acquired party to obtain such written assurance.


<PAGE>



                  ARTICLE XVI - APPROVAL OF BOARD OF DIRECTORS

     Each party  warrants and  represents to the other party that, to the extent
legally required, this Agreement has been approved by its Board of Directors.

     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed in duplicate by their respective  officer thereunder duly authorized as
of the date first hereinabove written.


MIRAVANT MEDICAL TECHNOLOGIES                PHARMACIA & UPJOHN S.p.A.



By:      /S/                                 By: /S/
         -------------------------               -------------------------------
         Gary S. Kledzik,                    Title:_____________________________
         Chairman of the Board and
         Chief Executive Officer




                       

                       AMENDED AND RESTATED OPHTHALMOLOGY
                        DEVELOPMENT & LICENSE AGREEMENT



                                    between



                             PHARMACIA & UPJOHN AB



                                      and



                         MIRAVANT MEDICAL TECHNOLOGIES



                                  June 8, 1998

<PAGE>

     THIS AMENDED and RESTATED  OPHTHALMOLOGY  DEVELOPMENT AND LICENSE AGREEMENT
(the  "Agreement")  is made and entered into as of June 8, 1998,  by and between
PHARMACIA  & UPJOHN  AB, a  company  organized  and  existing  under the laws of
Sweden,   (hereinafter   referred  to  as  "P&U  AB"),   and  MIRAVANT   MEDICAL
TECHNOLOGIES, INC., a company organized and existing under the laws of the state
of Delaware,  with its head offices at 7408  Hollister  Avenue , Santa  Barbara,
California 93117, U.S.A. (hereinafter referred to as "Miravant")

                                WITNESSETH THAT:

     WHEREAS, P&U AB is a pharmaceutical company doing research, development and
marketing of pharmaceutical products;

     WHEREAS,  Miravant is a  pharmaceutical  and medical  device  company that,
using its proprietary  technology and know-how,  has developed and will continue
to develop,  on its own or in  collaboration  with third parties,  photoreactive
drugs and  related  light  devices for the  diagnosis  and  treatment  of a wide
variety of diseases;

     WHEREAS, Pharmacia & Upjohn S.p.A., an Italian corporation and affiliate of
P&U AB ("P&U SpA"),  and Miravant  entered  into that  certain  Development  and
License Agreement, dated July 1, 1995 (the "SPA License Agreement"), under which
P&U SpA was granted certain licenses under Miravant's  technology for use in the
Field of oncology,  dermatology and urology;  and the SPA License  Agreement was
amended on July 10, 1996 to include a sublicense  to P&U AB for use in the field
of ophthalmology;

     WHEREAS,  on the date  hereof,  P&U SpA and  Miravant  have amended the SPA
License Agreement,  under which, among other changes,  P&U SpA's license will be
limited to the Field of  oncology  and  urology;  and  Miravant  and P&U AB have
agreed to continue  such  arrangement  directly by entering  into this  separate
Agreement for the field of ophthalmology;

     NOW,  THEREFORE,  in  consideration of the above premises and the covenants
contained herein, the parties hereto agree as follows:



<PAGE>



                             ARTICLE 1 - DEFINITIONS



The  following  capitalized  terms used herein shall have the meanings set forth
below:

     1.1 Affiliate. "Affiliate" shall mean, with respect to any specified party,
any  person  or  entity  that  directly  or  indirectly   through  one  or  more
intermediaries,  controls, or is controlled by, or is under common control with,
the party specified.  For purposes of this definition,  "Control" including with
correlative meanings,  the terms "controlled by" and "under common control with"
means  ownership  directly or indirectly of more than fifty percent (50%) of the
equity  capital  having the right to vote for election of  directors  (or in the
case  of  an  entity  other  than  a  corporation,   the  equivalent  management
authority).

     1.2 Agreement. "Agreement" shall mean this Amended and Restated Development
and License Agreement.

     1.3 Clinical  Tests.  "Clinical  Tests" shall mean any tests,  performed on
humans in preparation and support of regulatory submissions.

     1.4 Development Program. "Development Program" shall mean the program to be
conducted by Miravant and P&U AB to develop Product (as hereinafter defined) and
obtain  regulatory  approvals  for the  sale of  Product  in the  Territory  (as
hereinafter defined) in accordance with the provisions of Article 4 hereof.

     1.5 Effective Date. The term "Effective Date" shall mean May 19, 1998.

     1.6 FDA. "FDA" shall mean the United States Food and Drug Administration or
the equivalent  governmental  authority in any other  country,  or any successor
agency having the administrative  authority to regulate the approval for testing
or marketing of human  pharmaceutical  or  biological  medical  products  and/or
medical devices.

     1.7 Field. "Field" shall mean the field of Ophthalmology.

     1.8 Gross Sales.  "Gross Sales" shall mean the final gross  invoiced  price
from the sale of Product by P&U AB and its Affiliates or Sublicensees; provided,
that Gross Sales shall exclude sales of Product  intended for resale between P&U
AB and its Affiliates and Sublicensees. Gross Sales from the sale of the Product
in Eastern Europe,  the Middle East,  Africa and Central America by Sublicensees
which are not  Affiliates  of P&U AB shall be  measured  by the F.O.B.  invoiced
price from P&U AB or one of its Affiliates to such distributors.

     1.9 GCP.  "GCP" shall mean current "good  clinical  practices" for carrying
out clinical  studies in humans as set forth in  regulations  promulgated by the
FDA,  as such may be  amended  from  time to time  or,  where  appropriate,  the
equivalent regulations  promulgated by the equivalent  governmental authority in
any other country.

     1.10  GLP.  "GLP"  shall  mean  current  "good  laboratory  practices"  for
conducting  nonclinical  laboratory  studies as set forth in regulations (21 CFR
Part 58)  promulgated  by the FDA, as such may be amended  from time to time or,
where  appropriate,  the  equivalent  regulations  promulgated by the equivalent
governmental authority in any other country.

     1.11 GMP. "GMP" shall mean current "good  manufacturing  practices" for the
preparation of drug products as set forth in  regulations  (21 CFR Parts 210 and
211)  promulgated by the FDA, as such may be amended from time to time, or where
appropriate,   the   equivalent   regulations   promulgated  by  the  equivalent
governmental authority in any other country.

         1.12 IND.  "IND"  shall mean all  governmental  approvals  required  to
commence  clinical  testing in humans,  including an  "investigational  new drug
application"  submitted  to the FDA  under  21 CFR  ss.312  for the  purpose  of
conducting  clinical  investigations  of Product or the  equivalent in any other
country.

     1.13  Light  Devices.  "Light  Devices"  shall  mean the  instruments  that
produce, deliver or measure light for use with Product.

     1.14 Major Countries. "Major Countries" shall mean the ***** and *****.

     1.15 Major Indication. "Major Indication" shall mean the indications in the
Field as set forth in Schedule 1.15.

     1.16 Minor Indication. "Minor Indication" shall mean the indications in the
Field as set forth in Schedule 1.16.

***** Confidential Treatment Requested
<PAGE>

     1.17 Net Sales.  "Net  Sales"  shall mean Gross  Sales less the  following:
trade,  cash  and  quantity   discounts;   returns,   normal  trade  allowances,
charge-backs,  federal,  state, or other  governmental  rebates and adjustments;
taxes on the sale or transportation of the Products absorbed by P&U AB.

     1.18 *****

     1.19 New SnET2.  "New  SnET2"  shall  mean the  Photodynamic  Therapy  drug
designated by Miravant as tin ethyl etiopurpurin in any formulation or strength,
other than SnET2 (as defined in Section 1.28).

     1.20 NDA.  "NDA" shall mean all  approvals  (including,  where  applicable,
pricing and  reimbursement)  to sell a  pharmaceutical  product in any  country,
including a "New Drug Application" or other premarket  approval  application for
Product,  and  any  supplement  or  abbreviated  application  relating  thereto,
submitted to the FDA or the equivalent in any other country.

     1.21 Operating  Committee.  "Operating  Committee" shall mean the committee
appointed pursuant to the provisions of Section 4.2 hereof.

     1.22 Other Indications.  "Other  Indications" shall mean the indications in
the Field set forth in Schedule 1.22.

     1.23  Out-of-Pocket  Expenses.  "Out-of Pocket  Expenses" shall mean actual
expenses,  including expenses for outside  consultants and CRO's, in relation to
Product paid after the  Effective  Date by Miravant or its  Affiliates  to third
parties who are not Affiliates of Miravant.

     1.24 Patent Rights. "Patent Rights" shall mean all patent applications,  as
well as continuation,  divisional or continuation-in-part  applications, and all
patents  issuing   therefrom,   including  reissue  or  reexamination   patents,
containing at least one claim covering Product, its use or sale, and only to the
extent such Patent  Rights are  directed to Product,  which are now or hereafter
owned or acquired by Miravant or any of its Affiliates,  or licensed to Miravant
or any of its  Affiliates,  and  all  extensions  and  supplementary  protection
certificates  relating thereto.  Patent Rights licensed to Miravant will only be
granted to P&U AB to the extent  permitted by Miravant's  license  agreement and
P&U AB will do nothing to disturb such agreement.

     1.25 Photodynamic Therapy.  "Photodynamic Therapy" shall mean the technique
of  diagnosis  and/or  treatment  of  abnormal or normal  biological  or medical
conditions, either in-vivo or ex-vivo, through the use of drugs activated by any
type of electromagnetic radiation or magnetic field.

     1.26 Preclinical Tests.  "Preclinical  Tests" shall mean any nonhuman tests
performed in preparation and support of regulatory submissions.

     1.27 Product. "Product" shall mean pharmaceutical products for Photodynamic
Therapy  containing tin ethyl  etiopurpurin as the active drug substance and any
isomers and derivatives  thereof, in any formulation,  whether SnET2 (as defined
in Section 1.28) or New SnET2 (as defined in Section 1.19).

     1.28 SnET2.  "SnET2" shall mean the Photodynamic Therapy drug designated by
Miravant as tin ethyl etiopurpurin in the injectable lipid emulsion formulation,
strength  and unit  dosage  form  being  tested  in  clinical  trials  as of the
Effective Date.

     1.29 Steering  Committee.  "Steering  Committee" shall have the meaning set
forth in Section 4.2.

     1.30 Sublicensee.  "Sublicensee" shall mean a third party to whom P&U AB or
any of its Affiliates  has granted,  in whole or in part, the right to market or
comarket the Product in one or more  countries in the Territory and who performs
selling  activities such as invoicing  customers in one or more countries in the
Territory.

     1.31  Technology.   "Technology"  shall  mean  all  information  and  data,
including,  but not limited to,  technical,  pharmacological,  toxicological and
clinical  information,   know-how,  inventions  and  improvements  possessed  by
Miravant as of the  Effective  Date or generated or obtained by Miravant  during
the term of this Agreement  relating to the  registration,  manufacture,  use or
sale of Product,  in each case to the extent  Miravant  has the right to provide
the same to P&U AB hereunder;  provided, that "Technology" shall not include any
such  information  or data  regarding  the  design or  manufacture  of any Light
Device.

     1.32 Territory. "Territory" shall mean the entire world.

     1.33  Unit.  "Unit"  shall  mean   *****

***** Confidential Treatment Requested
<PAGE>

     1.33  Schedules.  The  Schedules  which are attached to this  Agreement and
which are herein incorporated, are as follows:

                  Schedule                        Description

                  1.15                            Major Indications
                  1.16                            Minor Indications
                  1.22                            Other Indications
                  3.3                             Key Countries


                        ARTICLE 2 - INTENTIONALLY OMITTED

                     ARTICLE 3 - LICENSE GRANT AND ROYALTIES

     3.1 License. Subject to the terms of this Agreement, Miravant hereby grants
to P&U AB and P&U  AB's  Affiliates  an  exclusive  worldwide,  royalty-bearing,
license under the Patent Rights and the Technology, not to mean devices, to use,
distribute  and sell  Product for  diagnosis  or  treatment  in the Field in the
Territory. P&U AB may sublicense, totally or in part, the license rights granted
under this  Section  3.1;  provided,  that (i) P&U AB must  notify  Miravant  in
writing of any such sublicense at least thirty (30) days in advance; (ii) P&U AB
remains  responsible  to  Miravant  for  all  contractual   obligations  of  the
Sublicensee,  including,  but not limited to,  payment of royalties,  keeping of
records and  reporting  of sales,  as if the  Sublicensee's  sales were P&U AB's
sales;  and  (iii)  the  Sublicensee  agrees  to be bound  by the  terms of this
Agreement  to  the  same  extent  as  P&U AB to  the  extent  applicable  to the
Sublicensee.

     3.2 Term of License.  With respect to Product,  the license  rights granted
under  Section 3.1 shall remain in effect in each country in the  Territory  for
the  duration  of the  Patent  Rights or for a period of ten (10) years from the
first commercial sale of Product on a country-by-country  basis, whichever shall
be longer.  After this period, P&U AB shall have an irrevocable,  fully paid-up,
nonexclusive license under the Technology in such country.

     3.3 Milestone Payments.  For Major and Minor Indications,  P&U AB shall pay
Miravant only the following sums upon achievement of the stated milestones:

     (i)  if, after  conducting  ***** for any Major and Minor  Indication,  the
          Operating  Committee decides to proceed with ***** for such indication
          *****, P&U AB shall pay Miravant: ***** for each Major Indication (or,
          in the case of *****; and ***** for each Minor  Indication;  provided,
          that in the event ***** are not  required for any  indication  and the
          Operating  Committee  decides to proceed with *****,  P&U AB shall not
          owe Miravant a ***** milestone payment for each such indication;

     (ii) for each  Major and Minor  Indication,  at ***** in one or more of the
          Key Countries  listed in Schedule 3.3, P&U AB shall pay Miravant *****
          for each  Major  Indication  so  approved,  and *****  for each  Minor
          Indication so approved.

     (iii)P&U AB  shall  not owe  Miravant  any  milestone  payments  for  Other
          Indications in Ophthalmology.

     3.4  Royalties.  P&U AB shall,  for the term of the  license  specified  by
Section  3.2,  pay  Miravant  royalties  on Net Sales of such  Products to third
parties  at the rate of ***** on total Net Sales of Product  ***** per  calendar
year,  and a royalty  of ***** on the part of total  Net Sales of such  Products
***** per calendar year, *****

     3.5  Sublicense  Fees.  P&U AB shall pay Miravant  ***** of any up-front or
lump-sum fees received by P&U AB in  consideration  of the grant of a sublicense
to Product, other to an Affiliate.

     3.6 Payment of Milestone Payments and Out-of- Pocket Expenses.  All amounts
of money due  pursuant  to  Section  3.4 and for the  payment  of  Out-of-Pocket
Expenses  described  in Article 4 shall be paid to  Miravant  or its  designated
Affiliate  within  thirty  (30)  days  from  receipt  by P&U AB of the  relevant
Miravant invoice.

     3.7 Payment of  Royalties.  The royalties due pursuant to Section 3.4 shall
be reported quarterly within thirty (30) days after March 31, June 30, September
30 and December 31. Such  royalties  shall be paid to Miravant or its designated
Affiliate  semi-annually within sixty (60) days after June 30 and December 31 of
each calendar year.  Each payment to Miravant or its designated  Affiliate shall
be accompanied by a report containing sufficient  information to enable Miravant
or its  designated  Affiliate to verify the accuracy of the  calculation  of Net
Sales on which such  payment was based  during the payment  period,  including a
statement  of Gross  Sales and Net Sales and a  reconciliation  of the  credits,
allowances,  rebates  and  other  deductions  contemplated  by  Section 1 .14 to
calculate Net Sales from Gross Sales.

***** Confidential Treatment Requested
<PAGE>

     3.8 Payment of  Royalties,  Fees,  and  Expenses.  The  milestone  payments
specified by Section 3.3 herein shall be paid to Miravant in US dollars. For the
purpose  of  converting  and  paying  royalties,   Out-of-Pocket   Expenses  and
sublicense fees specified by Section 3.5 herein,  monies shall be first computed
in the  currency  of the  country  where the sales took place or the expense was
incurred, and then, unless another currency is designated by Miravant, converted
into US dollars at the most favorable  buying  exchange rates  prevailing on the
day P&U AB converts the local currency into US dollars for payment to Miravant.

     3.9 P&U AB  Ceases to Market or Sell  Product.  Unless  otherwise  mutually
agreed to by the parties and provided that a particular Product is sold or is to
be sold in a Major  Country by one entity only, be it P&U AB or its Affiliate or
a Sublicensee,  should P&U AB or its Affiliates or Sublicensees  cease to market
or sell a Product in that Major Country or fails to launch a particular  Product
in that Major Country within ***** from the occurrence of the latest to occur of
the  following  events (if  applicable in such Major  Country):  (i) issuance of
Product's NDA approval in that country, (ii) governmental price approval,  (iii)
reimbursement  of the social  security  (if any),  and (iv) NDA  approval of all
relevant  Light  Devices,  P&U AB shall have no further rights to the Product in
that  country nor shall P&U AB have any further  obligations  for the Product in
that country, except such obligations which accrued prior to divestment from P&U
AB of rights to the Product.  In the event rights to a Product are divested from
P&U AB in any country pursuant to this Section 3.09 and upon Miravant's request,
P&U AB shall  immediately  transfer the NDA approval in that country to Miravant
or to an  appointee  of  Miravant,  provide  to  Miravant  all  data in P&U AB's
possession  or control  relating to that Product and take all such other actions
as are necessary or useful to permit Miravant to obtain regulatory  approvals to
market  Product in such  country.  If P&U AB fails to comply with the  foregoing
within  thirty (30) business  days after such  Miravant  request,  P&U AB hereby
irrevocably  appoints Miravant as its attorney-in-fact to secure the transfer of
the NDA approval to Miravant.  Miravant  shall market the Product  under its own
tradenames or brands and shall not use P&U AB's tradenames or brands. Failure by
P&U AB to launch a Product or  interruption  of  marketing  or sale of a Product
pursuant to this Section 3.09 shall not be considered a breach of this Agreement
within the meaning of Article 10. For the  avoidance of doubt,  it is understood
between the parties  hereto that the  provision  of this  Section 3.09 shall not
apply in the even that P&U AB or its Affiliates or Sublicensees  cease to sell a
Product in a Major Country for reasons  related to the safety and efficancy of a
Product.


     3.10 Books and Records.  P&U AB shall keep,  and shall cause its Affiliates
and  Sublicensees  to keep,  complete and  accurate  books of accounts and other
records,  for a period of ***** from the relevant  sale,  containing  sufficient
detail as may be  necessary  for Miravant to properly  ascertain  and verify the
royalties  payable  to  it  hereunder  in  accordance  with  generally  accepted
accounting  principles.   Upon  Miravant's  request,  P&U  AB  shall  permit  an
independent certified accountant selected by Miravant (except one to whom P&U AB
has some  reasonable  objection)  to have access once each year during  ordinary
business  hours to such P&U AB  records as may be  necessary  to  determine  the
correctness  of any report and payment made under this  Agreement.  If the audit
shows that P&U AB has underpaid any royalties by ten percent (10%) or more,  for
any period  covered by the  audit,  P&U AB shall,  in  addition  to  immediately
remitting  to  Miravant  the  amount of  underpayment,  pay for the cost of such
audit.  In the event the audit shows that P&U AB has overpaid any  royalties due
pursuant  to Section  3.4,  P&U AB shall be allowed to deduct the amount of such
overpayment from the next semiannual royalty payment due to Miravant.

     3.12  Reimbursement.  Prior to the date hereof, P&U AB paid to Miravant the
sum of Five Hundred Thousand US Dollars  ($500,000),  as reimbursement for prior
expenses incurred by Miravant in the development of SnET2 for the Field.

***** Confidential Treatment Requested
<PAGE>



               ARTICLE 4 - STRATEGIC PLAN, DEVELOPMENT AND FUNDING

     4.1 Strategic Plan. The parties have developed a written plan in respect to
the Field of Ophthalmology,  dated as of January 1998. This plan shall be called
the " Strategic Plan".

     4.2  Operating  Committee.  The  details  of the  planning,  direction  and
activities to be conducted  under the Strategic Plan are under the  coordination
of an  Operating  Committee  consisting  of *****  members.  *****.  Each of the
parties  shall  have  *****   representatives   on  the   Operating   Committee.
Responsibilities  of the Operating  Committee shall be limited to recommendation
of additions and deletions to the indications to the Strategic  Plan,  amendment
and  approval  of the  Development  Program  including  schedules  and  budgets,
approval  of  protocols  for  Clinical   Tests,   and  review  and  approval  of
publications and presentations  related to Product.  If the Operating  Committee
recommends to add any indication, it shall also determine whether it is a Major,
Minor or Other Indication, based on criteria including but not limited to, *****
and *****.  Any  addition  or  deletion  of an  indication  shall be made by the
parties as an  amendment  of this  Agreement.  Each party may replace any of its
respective  members  without the consent of the other party.  In addition to the
Operating  Committee,  there will be a steering committee which will be composed
of *****  members,  *****  from  Miravant  and  *****  from  P&U (the  "Steering
Committee").  The Steering Committee will be convened in the event of a deadlock
between the members of the Operating  Committee.  In the event that the Steering
Committee  is  deadlocked,  then P&U will have the deciding  vote.  The Steering
Committee will include senior executives from both P&U and Miravant.

     4.3 Voting.  Each member of the Operating Committee shall have one (1) vote
and all decisions of the Operating Committee shall require a majority vote.

     4.4 Reporting of Results. Within ten (10) days after March 31 and September
30 of each  year,  each  party  shall  provide  the other  party with a detailed
progress  report  on  its  implementation  of  the  Strategic  Plan,   including
experimental results and Phase I, Phase II and Phase III Clinical Test data. The
parties shall also consult  periodically  and at such times as determined by the
Operating Committee

     4.5  Preparation of IND.  Miravant  shall be responsible  for preparing and
filing in its own name any IND necessary  for  conducting  Clinical  Tests to be
performed under the Strategic Plan; provided,  that in the event Miravant cannot
hold an IND in its own name in a country,  the parties shall  mutually agree how
to proceed.

     4.6 SnET2 for  Ophthalmology.  Unless otherwise  determined by the parties,
Miravant shall be responsible for conducting all necessary Preclinical Tests and
Phase I and Phase II Clinical  Tests for SnET2 to be used in any  indications in
the Field. The Out-of-Pocket Expenses associated with Preclinical Tests, Phase I
and Phase II Clinical Tests being  conducted by Miravant on the Effective  Date,
or conducted by Miravant  thereafter,  shall be reimbursed by P&U AB;  provided,
that these studies were  conducted in  accordance  with the protocols and budget
approved  by  the  Operating  Committee.   Miravant  shall  be  responsible  for
conducting  Phase III Clinical Tests of SnET2 in the United  States,  and P&U AB
shall reimburse  Miravant for all Out of Pocket Expenses so incurred;  provided,
that these studies were  conducted in accordance  with the protocols and budgets
approved by the Operating  Committee.  P&U AB will be responsible for conducting
Phase  III  Clinical  Tests of SnET2 in the rest of the  world.  P&U AB shall be
responsible for conducting all post-NDA approval studies which may be necessary.
The Operating Committee has the right to determine,  in its reasonable judgment,
whether to proceed to Phase III Clinical  Tests for any indication in the Field.
All Clinical Tests shall be conducted in accordance with the protocols  approved
by the  Operating  Committee.  Miravant  shall  supply to P&U AB SnET2 and Light
Devices to enable P&U AB to carry out such Phase III Clinical Tests conducted by
it. The actual  costs of SnET2 and Light  Devices for all  Clinical  Test phases
shall be shared equally by the parties hereto.

     4.7 New  SnET2  for any  Indication.  Miravant  shall  be  responsible  for
conducting  all  necessary  Preclinical  Tests and Phase I and Phase II Clinical
Tests for any New SnET2  for any  indication  in the  Field.  The  Out-of-Pocket
Expenses  associated  with  such  Preclinical  Tests  and  Phase I and  Phase II
Clinical Tests shall be reimbursed by P&U AB; provided,  that these studies have
been  conducted  in  agreement  with the  Operating  Committee.  P&U AB shall be
responsible for conducting,  and shall bear all cost associated  with, Phase III
Clinical  Tests of New SnET2  for any  indication,  as well as for all  post-NDA
approval studies which may be necessary;  provided, that the Operating Committee
has the right to determine,  in its reasonable  judgment,  whether to proceed to
Phase III Clinical Tests of New SnET2 for any indication.  Miravant shall supply
to P&U AB New SnET2 and Light  Devices  to enable  P&U AB to carry out Phase III
Clinical Tests required to support an NDA for New SnET2. The actual costs of New
SnET2 and Light Devices for all Clinical  Test phases will be shared  equally by
the parties hereto.

***** Confidential Treatment Requested
<PAGE>

     4.8  Submission  of NDA. P&U AB shall be  responsible  for  assembling  the
information supplied by Miravant to prepare each NDA for a Product and to submit
it to the concerned health authorities of the Territory.  All such NDAs shall be
filed in the name of, and shall remain the sole and  exclusive  property of, P&U
AB,  subject to Section 3.9 hereof.  Before an NDA is submitted to the concerned
health  authorities,  it  shall  be  reviewed  and  approved  by  the  Operating
Committee.  If P&U AB does not file an NDA for the United States within nine (9)
months after its receipt of all investigator  reports,  clinical data, and other
information required to be submitted in an NDA, Miravant may prepare the NDA and
submit it under P&U AB's name,  unless  such delay was not caused by the lack of
diligent efforts by P&U AB.

     4.9 Audit of  Out-of-Pocket  Expenses.  Miravant  shall keep,  or cause its
Affiliates to keep,  complete and accurate records of Out-of-Pocket  Expenses in
sufficient detail for P&U AB to verify the accuracy of any invoices submitted to
P&U AB by Miravant for payment of Out-of-Pocket Expenses pursuant to Section 4.6
and 4.7. P&U AB shall have the right to audit such  records on an annual  basis,
using an  independent  certified  accountant,  at a date and time  acceptable to
Miravant  during  normal  business  hours.  If as a result of the  audit,  it is
determined  that P&U AB has been  overcharged by Miravant during a calendar year
by more than ten percent (10%) of the actual  expenses,  Miravant  shall pay for
the cost of the audit,  and P&U AB shall, at its  discretion,  either deduct the
amount of the  overcharge  from the next  semiannual  royalty  payment or take a
credit against payment of future invoices for Out-of-Pocket Expenses.



                        ARTICLE 5 - DUTIES OF THE PARTIES

     5.1 Promotion and Customer Service.  As Miravant's  exclusive  licensee for
Product  in the  Territory,  P&U AB  agrees  to use all  reasonable  efforts  to
introduce,  promote,  market  and sell  Product in the  Territory.  P&U AB shall
maintain adequate  facilities,  Product inventory and personnel to ensure prompt
handling and  servicing of customers'  inquiries and orders and prompt  shipment
and servicing of Product.

     5.2 Care of Product.  P&U AB shall  comply with all  applicable  regulatory
requirements  regarding acceptable methods for the care,  handling,  storage and
shipment of Product.  Each party hereby agrees that it shall promptly provide to
the other,  on  request,  all  information  known to it which is  necessary  for
compliance  with  the  applicable  laws and  regulations  concerning  the  care,
handling, storage, labeling, packaging and shipment of Product.

     5.3 Exclusive.  During the term of this Agreement,  unless otherwise agreed
to by Miravant, P&U AB shall not, directly, or indirectly, develop or sell other
Photodynamic  Therapy  drugs for use in the Field.  P&U AB agrees  that it shall
secure the same agreement from its Affiliates and Sublicensees. Clayton's rights
under Section XI of the  Clayton/Miravant  Contract,  dated 31st August 1994 (as
such  terms are  defined  in  Section  7.1),  are  expressly  excluded  from the
provisions of this Section 5.3.

     5.4  Authorization.  P&U AB and Miravant each warrant that it has the legal
capacity to enter into this  Agreement  and that it has  secured  all  necessary
approvals.

     5.5  Obligations to Miravant's  Licensor.  To the extent relating to Patent
Rights or  Products in the Field,  P&U AB agrees to  undertake  all  sublicensee
obligations  set  forth in any  license  agreement  between  Miravant  and third
parties which was fully disclosed to P&U AB on or prior to July 10, 1996.

     5.6 Sale of Product by  Miravant.  Subject to the terms of this  Agreement,
while the license granted to P&U AB under Article III hereof with respect to any
Product is in effect in any country in the Territory, Miravant shall not license
or appoint any other licensee, distributor or marketing representative in or for
such country for such  Product in the Field,  sell such Product in or for use in
such country,  nor accept orders for such Product from purchasers located within
such  country or from any  purchasers  Miravant  has reason to believe will sell
such Product within or for use in such country except as provided for in Section
3.9.

     5.7 Right to License Patent Rights, Product and Technology. Miravant hereby
represents  and warrants  that it owns or has rights to use the  Technology  and
Patent Rights described  herein,  and that it has the right to grant sublicenses
under any license to SnET2 or covering Product held by Miravant.

     5.8 Access to Information Relating to Light Devices.  Both parties agree to
provide the other with access to  information  or data relating to Light Devices
which either  party may need for  regulatory  approval to market  Product in the
Field and which  Miravant may need for  regulatory  purposes for products  other
than Product in the Field.
<PAGE>


     5.9 Access to Light  Devices.  The  parties  mutually  acknowledge  that an
essential  feature of the  development  of Product for  marketing  hereunder  is
access by P&U AB to Light Devices.  Miravant  agrees that it shall undertake all
necessary action to enable P&U AB to access Light Devices and to insure that P&U
AB has continued access to Light Devices during the term of the license rights
specified by Section 3.2.

     5.10  Compliance  with  Applicable  Law.  In  exercising  the rights and in
carrying out the duties and obligations set forth in this Agreement,  each party
represents and warrants that it shall comply with all applicable state,  federal
and country laws or rules.  Each party further  represents  and warrants that it
shall  comply  with  all  applicable   rules  and   regulations   governing  the
manufacture,  distribution,  promotion,  marketing  and sale of  Product  in the
Territory  and that it shall  specifically  comply with GLP's,  GCP's,  GMP's or
other  equivalent  regulatory  requirements  of any  country.  Unless  otherwise
disclosed,  Miravant  represents  and warrants  that all studies which were done
prior to the  Effective  Date and  which are  included  in the IND or NDA for KS
and/or BCC have been conducted in accordance with GLP's,  GCP's, and GMP's where
applicable.

     5.11  Duty  to  Develop  Product.  Each  party  agrees  that it  shall  use
reasonable  efforts  to  develop  Product  in the Field in  accordance  with the
Strategic Plan.

     5.12  Patent  Filing,  Prosecution  and  Maintenance.   Miravant  shall  be
responsible  for  all  decisions  relating  to and  all  costs  associated  with
preparing,  filing,  prosecuting and maintaining  Patent Rights.  Miravant shall
timely  notify P&U AB about  each  patent  application  filed  which  relates to
Product, its progress and subsequent disposition. Miravant shall not voluntarily
abandon or forfeit any Patent Rights, without the prior approval of P&U AB, such
approval shall not be unreasonably withheld or delayed.

     5.13 Miravant's  Representations.  Miravant hereby  represents and warrants
that:

     (i)  It is not party to any agreement,  arrangement or  understanding  with
          any third party which in any material way  conflicts  with its ability
          to fulfill any of its obligations under this Agreement.

     (ii) It will not knowingly  commit any material act or fail to take any act
          which would cause a material  omission or permit any acts or omissions
          to occur which would be in conflict  with its  obligations  under this
          Agreement or diminish in any material  respect the potential  scope of
          the grant of rights to P&U AB under this Agreement.

     (iii)It has no  knowledge  that the license  rights  granted to P&U AB with
          respect to the Product  shall not be subject to any material  retained
          rights of any state,  federal or foreign  government  or  governmental
          entity,  except for the rights of the United States  government  under
          the  Bayh-Dole Act and except as disclosed to P&U AB prior to July 10,
          1996.

     (iv) It has no knowledge that making,  using or selling any Products (alone
          or in  combination  with any Light  Devices)  may  infringe the patent
          rights of any  third  party  nor does it have any  knowledge  that any
          third party is infringing the Patent Rights.

     (v)  It has no  agreement,  understanding  or  undertaking,  with any third
          parties   regarding  the  ownership  or   disposition   of  tin  ethyl
          etiopurpurin, isomers and derivatives thereof or any Product.



                     ARTICLE 6 - *****

     6.1 *****

     6.2 *****

     6.3 *****

     6.4 *****

***** Confidential Treatment Requested
<PAGE>



                          ARTICLE 7 - SUPPLY OF PRODUCT

     7.1 Commercial Supply of Product. P&U AB shall purchase from Miravant,  and
Miravant  shall  supply  P&U AB,  all of P&U AB's  requirements  of  Product  in
finished form to be sold by P&U AB in the Territory.  P&U AB  acknowledges  that
Miravant has a Development  and  Commercial  Supply  Contract  with  Pharmacia &
Upjohn Co., which has a production  facility at Clayton,  N.C.  ("Clayton"),  to
manufacture   certain   formulations  of  Product  (the  "Clayton   Agreement").
Miravant's  obligations to supply P&U AB with Product are dependent upon Clayton
fulfilling its obligations to Miravant.

     7.2 Commercial Transfer Price. The "Transfer Price" for Product supplied to
P&U AB by Miravant shall be equal to the sum of the following:

     (i)  *****

     (ii) *****

     7.3 *****

     (i)  *****

     (ii) *****

          a.   *****

          b.   *****

*****

     7.4  Clinical  Supply of Product.  Miravant  shall supply P&U AB all of P&U
AB's  requirements of Product for use in Clinical Tests. The parties shall share
equally the costs of such Product.

     7.5 Ownership of Trademarks. P&U AB shall own all trademarks,  logos and/or
trade dress which it registers  for use or  otherwise  uses in  connection  with
Product.



                     ARTICLE 8 - REGULATORY RESPONSIBILITIES

     8.1 Complaints. Miravant and P&U AB shall share with each other all data on
complaints in respect of Product  subject to this Agreement  including,  but not
limited to,  complaints or information  regarding  performance or allegations or
reports of any effects on a patient  from use of such  Product,  as soon as such
data is available. To the extent that it has knowledge thereof, each party shall
promptly  notify the other in writing of any defect in, or condition of, Product
subject  to this  Agreement  which may cause any such  Product  to  violate  the
applicable  laws and  regulations  of any  country in the  Territory  where such
Product is being sold by P&U AB.

     8.2 Recall.  In the event of a total or partial  recall of Product  sold by
Miravant to P&U AB under this Agreement,  whether  voluntary or mandated by law,
the parties  agree to  cooperate  fully to effect the recall.  In the event such
recall  results from the gross  negligence  or willful  misconduct  of Miravant,
Miravant shall bear all the expenses  associated with such recall.  In the event
such recall results from the gross  negligence or willful  misconduct of P&U AB,
P&U AB shall bear all the expenses  associated  with such recall.  If any recall
results  without gross  negligence or willful  misconduct of either party,  then
Miravant  and P&U AB shall  equally  bear the  expenses of such  recall.  P&U AB
agrees to maintain  adequate sales and service records to enable it to carry out
any Product recall and to conduct such recall.

     8.3 Adverse Reactions. Each party shall be responsible for maintaining such
records  and making  such  reports as may be  required  in  connection  with any
regulatory  approval held by the party. Each party shall immediately  inform the
other of all adverse drug experience  reports and other information  relating to
the safety or effectiveness of product which come to its attention.

***** Confidential Treatment Requested
<PAGE>




                   ARTICLE 9 - PUBLICATION AND CONFIDENTIALITY

     9.1  Publication.  At least thirty (30) days prior to the time either party
submits any data or articles related to Product or Technology for publication or
presentation,  the  proposed  publication  or  presentation  must be sent to the
Operating  Committee for review and  clearance.  If the  Operating  Committee so
decides, such publication or presentation can be delayed as long as necessary to
preserve US or foreign patent or other property rights.

     9.2  Disclosure.  Miravant  shall  disclose to P&U AB from time to time all
information relating to the Patent Rights,  Technology and Product for the Field
which was not  previously  disclosed;  provided,  that  Miravant  shall  only be
required to disclose  such  information  to P&U AB as is necessary for P&U AB to
fulfill its obligations under this Agreement.  All information  disclosed by one
party  to the  other  under  this  Section  9.2  shall be  deemed  "Confidential
Information"  and  treated as  provided  in  Section  9.3  hereof.  P&U AB shall
disclose to Miravant, or Miravant shall have access to, information developed by
P&U AB related to Product  including,  but not  limited  to, the NDA's and other
regulatory data including clinical data and investigators' reports, applications
and licenses.

     9.3 Confidential  Information.  Unless otherwise  mutually agreed to by the
parties,   the  parties  agree  to  maintain  in  confidence  all   Confidential
Information disclosed to the other pursuant to Section 9.2 and shall not, during
the term of this  Agreement and for a period of five (5) years  thereafter,  use
such Confidential Information, except as permitted by this Agreement or disclose
the same to anyone  other  than  those of its  officers,  directors,  employees,
Affiliates and  Sublicensees to the extent  necessary in connections with either
party's  activities as contemplated in this Agreement.  Each party shall use its
reasonable efforts to ensure that its officers, directors, employees, Affiliates
and  Sublicensees  do  not  disclose  or  make  any  unauthorized  use  of  such
Confidential Information.

     9.4  Limitations  on  Confidentiality.  The  obligation of  confidentiality
contained  in  Section  9.3 shall not  apply to the  extent  that (i) a party is
required  to  disclose  information  by  applicable  law,  such as  pursuant  to
Securities  and  Exchange  Commission  rules  and  regulations,  or  order  of a
governmental  agency  or a court of  competent  jurisdiction,  (ii) a party  can
demonstrate  that the  disclosed  information  was,  at the time of  disclosure,
already in the public domain other than as a result of actions or failure to act
of a party, its officers, directors,  employees,  Affiliates and Sublicensees in
violation  hereof;  (iii) the disclosed  information  was rightfully  known by a
party or its Affiliates or sublicensees  (as shown by its written records) prior
to the date of disclosure to the other party in connection  with this Agreement;
or (iv) the disclosed  information  was received by a party or its Affiliates or
Sublicensees on an unrestricted basis from a third party source which is not the
other  party  or an  Affiliate  of the  other  party  and  not  under  a duty of
confidentiality, and which was rightfully known to said source.



                        ARTICLE 10 - TERM AND TERMINATION

     10.1 Term.  Subject to the  provisions of this Article 10, the term of this
Agreement  shall  continue so long as P&U AB shall be obligated to pay royalties
on the sale of any Product in the Territory.

     10.2  Termination  for Breach.  In the event either party shall  materially
breach any of the terms,  conditions and agreements contained herein to be kept,
observed and performed by it, then the other party may terminate this Agreement,
at its option and  without  prejudice  to any of its other  legal and  equitable
rights and remedies,  by giving the party which  committed the breach sixty (60)
days' notice of its intent to  terminate,  particularly  specifying  the breach,
unless the notified party within such 60 day period shall have cured the breach.
The 60 day period  shall be extended for a period not  exceeding  an  additional
ninety (90) days for breaches which cannot be reasonably cured within the 60 day
period if the party has commenced to cure the breach within that period.

     10.3  Termination  by  Bankruptcy.  In the event  either party shall file a
voluntary petition or any answer admitting the jurisdiction of the Court and the
material  allegations of, or shall consent to, an involuntary  petition pursuant
to or purporting to be pursuant to any  reorganization  or insolvency law of any
jurisdiction, or shall make an assignment of substantially all of its assets for
the benefit of creditors,  or shall apply for or consent to the appointment of a
receiver or trustee of a substantial part of its property (such party,  upon the
occurrence of any such event, a "Bankrupt Party"),  then to the extent permitted
by law  the  other  party  hereto  may  thereafter  immediately  terminate  this
Agreement by giving  notice of  termination  to the Bankrupt  Party,  unless the
proceeding is dismissed within ninety (90) days of its filing.

     10.4  Effect  of  Termination.   It  is  understood  and  agreed  that  the
termination of this Agreement  shall not affect the rights or obligations of the
parties which (i) by the terms hereof,  continue  after the  termination of this
Agreement,  or (ii) have accrued prior to such  termination  including,  but not
limited to, the rights of Miravant to receive any amounts then owing from P&U AB
for royalties due hereunder,  all of which amounts shall be immediately  due and
payable on such date.



                        ARTICLE 11 - PATENT INFRINGEMENT

     11.1 Infringement by Third Parties.  If, during the term of this Agreement,
either Miravant or P&U AB shall acquire  knowledge or have  reasonable  cause to
believe  that  any of the  Patent  Rights  claiming  a  Product,  or its  use or
manufacture,  shall be  infringed  or used  without  authorization  by any other
person in the  Territory,  such party  shall  promptly  notify the other of such
knowledge.  Miravant and P&U AB shall  promptly  meet to discuss the  commercial
impact of such third party  infringement  and the most efficient and expeditious
manner to proceed against said third party.

     11.2  Initiation  of Action by  Miravant or P&U AB.  Miravant  may take all
steps  in  its  name  which  are  necessary  or  advisable  including,   without
limitation,  the  institution  of any action or proceeding  for the obtaining of
damages or the  enjoinment of any such  infringement  and to prosecute,  settle,
compromise or otherwise  dispose of the same.  Miravant shall be entitled to the
full  recovery  of any money or other  property  collected  by way of  judgment,
settlement  (whether  prior  to or  after  the  institution  of  any  action  or
proceeding) or otherwise on any action  initiated by Miravant.  If Miravant does
not commence such an action within one hundred eighty (180) days after a request
to do so by P&U AB,  then P&U AB may  initiate an action or  proceeding  for the
obtaining  of  damages  or  the  enjoinment  of  any  such  infringement  and to
prosecute,  settle, compromise or otherwise dispose of the same. P&U AB shall be
entitled to the full recovery of any money or other property collected by way of
judgment, settlement (whether prior to or after the institution of any action or
proceeding) or otherwise on any action initiated by P&U AB. Each party agrees to
reasonably cooperate with the other party in any legal proceeding and to pay all
of its own costs taken pursuant to this Section 11.2.

     11.3  Claims  Against  P&U AB or  Miravant.  If any claim is made or action
brought against P&U AB or Miravant based on the claim that P&U AB or Miravant is
infringing  any third party patent rights by virtue of the  manufacture,  use or
sale of Product  hereunder,  P&U AB or  Miravant  shall  promptly  so notify the
other.  The parties shall then consult with each other as to the most  efficient
and reasonable course of action to take relative to such third party claim. Each
party hereto shall pay its own expenses in defending any such third party claim.
P&U AB shall solely be responsible for any trademark infringement claims and for
all damages claimed against P&U and its Affiliates by any third party.

     11.4  Damages  Paid to Third  Party.  If, in any such action  described  in
Section  11.3,  a court  of  competent  jurisdiction  determines  that P&U AB or
Miravant is obligated to pay damages to any third  person  (excluding  trademark
claims) because P&U AB or Miravant's  manufacture,  use or sale of a Product was
held to be an  infringement  of a third party right,  *****.

     11.5 Reduction of Royalties.  In the event the legal proceedings  described
in Section 11.3 result in a settlement or other final action which  requires P&U
AB to pay a  royalty  to a third  party  in  order  to  continue  to use or sell
Product,  the  royalty  paid by P&U AB to  Miravant  for such  Product  shall be
reduced by an amount  equal to ***** of the rate of the  royalty  that P&U AB is
required to pay to such third party,  not to exceed ***** of the royalties which
would otherwise be payable to Miravant.



                          ARTICLE 12 - INDEMNIFICATION

     12.1  Indemnification.  Except for matters relating to indemnification  for
infringement of intellectual  property  rights,  as to which Article 11 shall be
the sole and exclusive provisions,  each party to this Agreement shall indemnify
and hold the other party  hereto  harmless  from and against any and all action,
causes of action, claims,  demands,  suits,  controversies,  damages,  verdicts,
judgments,  executions  and  all  cost  and  expenses  in  connection  therewith
including,  but not limited to, reasonable  attorneys' fees, whether or not well
founded in fact or in law, brought or claimed by any third persons, which and to
the extent thereof shall arise from any breach of this Agreement by, or from the
negligent acts or omissions of, the  indemnifying  party under this Agreement (a
"Liability").

***** Confidential Treatment Requested
<PAGE>
     12.2 Notice of Defense of Actions.  Each party shall give the other  prompt
notice  of any  potential  Liability,  and  promptly  after  receipt  by a party
claiming  indemnification  under this Section 12.2 of notice of the commencement
of any action,  such indemnified party will notify the indemnifying party of the
commencement of the action and generally summarize such action. The indemnifying
party shall have the right to  participate  in and to assume the defense of such
action with counsel of its choosing.  An  indemnifying  party shall not have the
right to direct the defense of such an action of an indemnified party if counsel
to such  indemnified  party has reasonably  concluded that there may be defenses
available to it that are different from or additional to those  available to the
indemnifying party;  provided,  that in such event, the indemnifying party shall
bear the fees and expenses of separate  counsel  reasonably  satisfactory to the
indemnifying  party. The failure to notify an indemnifying party promptly of the
commencement  of any such action,  if  prejudicial to the ability to defend such
action,   shall  relieve  such  indemnifying  party  of  any  liability  to  the
indemnified  party under this  Section  12.2,  but the omission so to notify the
indemnifying  party will not relieve such party of any liability that such party
may  have to any  indemnified  party  otherwise  than  under  this  Section.  No
settlement  of any  claim or  action  may be made  without  the  consent  of the
indemnifying party (which shall not be unreasonably withheld or delayed).



                       ARTICLE 13 - RESOLUTION OF DISPUTES

     13.1 Resolution of Disputes by Parties'  Presidents.  The parties recognize
that a bona fide  dispute  as to  certain  matters  may from time to time  arise
during  the term of this  Agreement  which  relate to either  party's  rights or
obligations hereunder.  In the event of the occurrence of such a dispute, either
party may, by written notice to the other,  have such dispute  referred to their
respective  officer   designated  below  or  their  successors,   for  attempted
resolution by good faith  negotiations  within sixty (60) days after such notice
is received. Said designated officers are as follows:

     For Miravant - President

     For P&U - Managing Director

     In the event the  designated  officers are not able to resolve such dispute
within  such sixty (60) day  period,  any party may  invoke  the  provisions  in
Section  13.2 below,  other than for matters  within the scope of the  Operating
Committee or the Steering Committee.

     13.2 Arbitration. Except as expressly provided in Section 13.1, any and all
disputes  arising out of or in connection with the performance of this Agreement
shall be finally  settled by  arbitration  in  accordance  with the rules of the
American  Arbitration  Association,  except  that each party will be entitled to
select one (1) arbitrator and the two (2) arbitrators so selected shall select a
third  arbitrator and if they cannot agree,  then the third arbitrator who shall
not be a citizen of the  United  States or of Sweden,  will be  selected  by the
American Arbitration Association. The arbitration shall be held in New York, New
York. The award  rendered shall be final and binding upon the parties.  Judgment
on any award may be entered in any court having jurisdiction over the parties or
their assets.  To the extent any claims  relate to the  validity,  construction,
scope, enforceability or infringement of any Patent Rights, such claim shall not
be required to be submitted to arbitration  hereunder and shall be resolved by a
court of  competent  jurisdiction.  The  costs of  arbitration  shall be  shared
equally by the parties.



                           ARTICLE 14 - MISCELLANEOUS

     14.1 Force  Majeure.  Neither P&U AB nor Miravant shall be in default under
this Agreement nor liable for any failure to perform or for delay in performance
resulting from any cause beyond its reasonable control or due to compliance with
any  regulations,  order or act of any federal,  provincial,  state or municipal
government,  or any department or agency thereof,  civil or military  authority,
acts of God, fires, floods or weather;  strikes or lockouts;  factory shutdowns,
embargoes, wars, hostilities or riots.

     14.2 Taxes.  Each of the parties  hereto shall be  responsible  for its own
taxes imposed as a result of the  performance by such party under this Agreement
including,  but not  restricted to, any sales tax, any tax on or measured by any
royalty or other payment  required to be made by it hereunder,  any registration
tax,  any tax imposed with respect to the granting of or transfer of licenses or
other rights hereunder or the payment or receipt of royalties hereunder. For the
avoidance  of any  doubt,  it is agreed  that any  withholding  tax  levied on a
payment  required  to  be  made  pursuant  to  this  Agreement,   shall  be  the
responsibility of the party receiving such payment.  The parties shall cooperate
fully with each other in obtaining  and filing all  requisite  certificates  and
documents with the  appropriate  authorities and shall use their best efforts to
take such further  action as may  reasonably be necessary to avoid the deduction
of any  withholding  or similar taxes from any  remittance of funds by P&U AB to
Miravant hereunder; provided, that P&U AB may withhold any tax it is required to
collect or pay on behalf of Miravant.

     14.3  Notices.  All notices,  proposals,  submissions,  offers,  approvals,
agreements, elections, consents, acceptances, waivers, reports, plans, requests,
instructions and other communications  required or permitted to be made or given
hereunder  (all  of  the  foregoing  hereinafter  collectively  referred  to  as
"Communications")  shall be in writing,  in the English  language,  and shall be
deemed  to have  been  duly made or given  when (i)  delivered  personally  with
receipt acknowledged,  (ii) mailed in any post office,  enclosed in a registered
or certified  postage-paid  envelope,  return receipt  requested,  (iii) sent by
facsimile,  telex or cablegram  (which shall  promptly be confirmed by a writing
sent by registered or certified mail, return receipt  requested) or (iv) sent by
a recognized  courier (e.g. DHL, Federal Express,  etc.), in each case addressed
or sent to the parties at the following  addresses  and facsimile  numbers or to
such  other or  additional  address  or  facsimile  number  as any  party  shall
hereafter specify by Communication to the other party:



<PAGE>




         P&U AB:                                     Pharmacia & Upjohn AB
                                                     Lindhagensgatan 133
                                                     S-112 87  STOCKHOLM
                                                     SWEDEN
                                                     Attention: General Counsel
                                                     Fax: +46 8 695 47 08

         With a copy to:                             James F. Farrington, Jr.
                                                     Wiggin & Dana
                                                     301 Tresser Blvd.
                                                     Stamford, CT 06901
                                                     USA
                                                     Fax: +1 203 363 7676

         Miravant:                                   Miravant, Inc.
                                                     7408 Hollister Avenue
                                                     Santa Barbara, CA  93117
                                                     U.S.A.
                                                     Attn: President
                                                     Fax # 805-685-2959

         With a copy to:                             Nida & Maloney, P.C.
                                                     800 Anacapa Street
                                                     Santa Barbara, CA  93101
                                                     U.S.A.
                                                     Attn: Joseph E. Nida
                                                     Fax # 805-568-1955

Notice of a change of address shall be deemed given when actually received.  All
other Communications  shall be deemed to have been given,  received and dated on
the  earlier  of:  (i) when  actually  received  or on the date  when  delivered
personally or (ii) one (1) day after being sent by facsimile, cable, telex (each
promptly  confirmed by a writing as aforesaid) or courier and seven (7) business
days after mailing.

     14.4 Relationship.  The relationship  between the parties shall be governed
by the  terms of this  Agreement  and  shall  not  extend  to other  activities,
transactions  or  contracts.  Neither  party  hereto  is in any way  the  agent,
venturer of partner of the other party.

     14.5 Governing  Law. The provisions of this Agreement  shall be governed in
all  respects  by the laws of New  York  without  regard  to  conflicts  of laws
principles.

     14.6 Other  Instruments.  The parties  hereto  covenant and agree that they
will  execute  such other and further  instruments  and  documents as may become
reasonably necessary or convenient to effectuate and carry out the provisions of
this Agreement or may be reasonably requested by the other party.

     14.7  Legal  Construction.  In  case  any  one or  more  of the  provisions
contained in this Agreement  shall be invalid or  unenforceable  in any respect,
the validity and  enforceability  of the remaining  provisions  contained herein
shall not in any way be  affected  or  impaired  thereby  and the  parties  will
attempt  to  agree  upon a valid  and  enforceable  provision  which  shall be a
reasonable  substitute for such invalid and unenforceable  provision in light of
the tenor of this  Agreement  and,  upon so  agreeing,  shall  incorporate  such
substitute provision in this Agreement.

     14.8 Entire Agreement,  Modification,  Consents and Waivers. This Agreement
contains the entire  agreement of the parties with respect to the subject matter
hereof and no interpretation,  change,  termination or waiver of or extension of
time for performance under any provision of this Agreement shall be binding upon
any  party,  unless in  writing  and  signed by the party  intended  to be bound
thereby.  Receipt  by any party of money or other  consideration  due under this
Agreement, with or without knowledge of breach, shall not constitute a waiver of
such breach or any provision of this Agreement.  Except as otherwise provided in
this  Agreement,  no waiver of or other  failure to exercise  any right under or
default  or  extension  of time for  performance  under  any  provision  of this
Agreement  shall affect the right of any party to exercise any subsequent  right
under any provision of this Agreement or otherwise enforce said provision or any
other  provision  hereof or to exercise  any right or remedy in the event of any
other default, whether or not similar.

     14.9  Agreements  Read as a Whole.  In order to accomplish the objective of
the  Strategic  Plan as outlined in Section 4.1 the parties  have  entered  into
three (3) agreements which are:

     Amended and Restated Ophthalmology Development and License Agreement, dated
the date hereof.

     Product Supply Agreement, dated July 1, 1995, as amended; and

     SNET2 Device Supply Agreement for Ophthalmology, dated December 20, 1996.

It is the intent of the parties that the terms of these  Agreements be read as a
whole and as being consistent with one another. In the event of an inconsistency
between  the terms of any of the  Agreements,  which  significantly  impacts the
parties'  ability to carry out the Strategic Plan, such  inconsistency  shall be
resolved by the Operating Committee. In the event the Operating Committee cannot
resolve  such  inconsistent  term,  the matter shall be referred to the Steering
Committee for resolution pursuant to Section 4.2.

     14.10  Section  Headings;  Construction.  The section  headings  and titles
contained  herein are each for reference  only and shall not be deemed to affect
the meaning or interpretation of this Agreement.  The singular shall include the
plural,  the conjunctive  shall include the disjunctive and the masculine gender
shall  include  the  feminine  and neuter,  and vice  versa,  unless the context
otherwise requires.

     14.11  Amendment.  This  Agreement  may only be  amended  in  writing by an
agreement designated as an amendment and executed by the parties hereto.

     14.12  Survival.  Articles  9  and  12  shall  survive  the  expiration  or
termination of this Agreement.
                 


                     ARTICLE 15 - BINDING EFFECT: ASSIGNMENT

     15.1  Binding  Effect and  Assignment.  This  Agreement  shall inure to the
benefit of and be binding upon each of the parties  hereto and their  respective
successors  and  assigns.  Neither  this  Agreement,  nor any of the  rights and
obligations  under this  Agreement,  may be assigned,  transferred  or otherwise
disposed of by either party without the prior consent of the other party, unless
such assignment,  transfer or disposition is to a successor to substantially all
the business or assets of the transferor;  provided,  that, such successor shall
in any event agree in writing with the other party to assume all  obligations of
the transferor under this Agreement in a manner satisfactory to the other party.
Subject to the foregoing  limitations,  the Agreement  shall be binding upon and
inure to the benefit of the respective successors and assigns of the parties.

     15.2 Right to Seek Assurance.  In the event all or substantially all of the
assets  of  either  P&U AB or  Miravant  are  acquired  by a  third  party,  the
non-acquired  party shall have the right  pursuant to Section  15.1 to receive a
written  assurance  from such  third  party  that the  third  party  intends  to
faithfully  perform all of the duties and  obligations of the acquired party set
forth in this Agreement.  The acquired party shall take all action  necessary to
enable the non-acquired party to obtain such written assurance.



     IN WITNESS  WHEREOF,  the parties  hereto have caused this  Agreement to be
executed in duplicate by their respective  officer thereunder duly authorized as
of the date first hereinabove written.

MIRAVANT MEDICAL TECHNOLOGIES                     PHARMACIA & UPJOHN AB


By:  /S/                                          By:  /S/
     ---------------------------------                 -------------------------
     Gary S. Kledzik, Chairman of the Board       Title: _______________________
     Officer and Chief Executive Officer

                                                  By:  /S/
                                                       -------------------------
                                                  Title: _______________________



<PAGE>



                                  SCHEDULE 1.15



                               Major Indications.



                                      *****


***** Confidential Treatment Requested
<PAGE>





                                  SCHEDULE 1.16





                               Minor Indications.





                                      *****





***** Confidential Treatment Requested
<PAGE>



                                  SCHEDULE 1.22



                               Other Indications.



                                     *****



***** Confidential Treatment Requested
<PAGE>



                                  SCHEDULE 3.3







                                 Key Countries.



                                  *****

***** Confidential Treatment Requested


                                                                    

                                                                    June 8, 1998

Miravant Medical Technologies
7408 Hollister Avenue
Santa Barbara, CA  93117
U.S.A.

Attn:   Gary S. Kledzik, Ph.D.

         Re: Pharmacia & Upjohn ("P&U")/
             Miravant Medical Technologies ("Miravant") - Right of First Refusal

Dear Gary:

     We have  today  agreed to amend that  certain  Development  and  Commercial
Supply Agreement,  dated as of August 31, 1994, between Miravant and Pharmacia &
Upjohn & Co. (successor to Pharmacia,  Inc.) (such agreement,  as amended on the
date hereof, is referred to as the "Clayton  Agreement").  Under Section 16.6 of
the Clayton  Agreement,  P&U has the right to assign the Clayton  Agreement to a
third party which  acquires its production  facility in Clayton,  North Carolina
(the "Clayton  Facility").  As you were previously  informed by P&U, Pharmacia &
Upjohn Inc. has now entered into an agreement  with *****,  under which P&U will
***** its entire  worldwide  parenteral  nutrition and fluids therapy  business,
including the Clayton Facility and other production plants.

         We understand  that Miravant  consents to our assignment of the Clayton
Agreement  and  releases  P&U from all  liabilities  and  obligations  under the
Clayton Agreement from and after the effective date of such assignment,  subject
to the following:

1.   P&U shall  retain  rights to all  information  relating  to the  analytical
     methods in the DMF  relating  to the  Miravant  ***** being  developed  and
     produced at the Clayton Facility *****;

2.   ***** shall  assume in writing to Miravant all of P&U's  obligations  under
     the Clayton Agreement;

3.   ***** and P&U shall also negotiate toward a separate supply agreement under
     which ***** will supply P&U directly  its  commercial  requirements  of the
     Miravant  Product,  to the extent P&U or one or more of its  Affiliates has
     the right to sell the Miravant  Product.  If we conclude such an agreement,
     (a) Miravant will continue to supply the ***** to ***** under the terms set
     forth in the Clayton Agreement;  and (b) Miravant will continue to have all
     other  rights  and  obligations  it now has  under the  Clayton  Agreement,
     including  participation  in  the  development  of the  formulation  of the
     Miravant Product,  purchase clinical supplies,  and purchase its commercial
     requirements  of the  Miravant  Product for uses  outside of any fields for
     which P&U has marketing rights.

4.   *****

Please  indicate your consent to the assignment of the Clayton  Agreement on the
terms set forth above by signing and returning a copy of this letter.

                                           Very truly yours,

                                           PHARMACIA & UPJOHN, INC.

                                           By:/S/
                                              ----------------------------------
                                           Title:_______________________________

AGREED TO:

MIRAVANT MEDICAL TECHNOLOGIES

By:/S/
   --------------------------------------------
         Gary S. Kledzik, Chairman of the Board
         and Chief Executive Officer

***** Confidential Treatment Requested

 

                            CREDIT AGREEMENT
                               

         This Credit Agreement (the "Credit Agreement"),  is made as of April 1,
1998 (the "Effective Date"),  between Ramus Medical  Technologies,  a California
corporation  (the  "Company"),  and Miravant  Medical  Technologies,  a Delaware
corporation (the "Lender").


                               R E C I T A L S :

     A. The Company and a subsidiary  of the Lender are parties to an Investment
Agreement  dated  as of  December  27,  1996  (the  "Investment  Agreement"),  a
Co-Development  Agreement  dated as of December  27,  1996 (the  "Co-Development
Agreement"),  a Series A Preferred Stock Registration  Rights Agreement dated as
of December  27, 1996 (the  "Registration  Rights  Agreement")  and an Option to
Purchase Ramus Medical Technologies Agreement dated as of December 27, 1996 (the
"Option  Agreement"  and,  collectively  with  the  Investment  Agreement,   the
Co-Development  Agreement and the Registration  Rights Agreement,  the "Existing
Agreements").

     B. The Company desires to borrow from the Lender, and the Lender desires to
lend  to  the  Company,  Two  Million  Dollars  ($2,000,000)  on the  terms  and
conditions set forth herein.

     C. On March 11, 1998 the Lender  received  written  notice from the Company
that as of such date the Company had completed the first  surgical  procedure to
implant the Company's  initial  product in a radial artery in a human subject in
accordance with the definition of "Milestone  Date" as set forth in Section 1 of
this Credit Agreement.

NOW, THEREFORE, the parties agree as follows:

1. Definitions.

     "Borrowing" shall mean the borrowing of Loans on a given date.

     "Commitment" shall mean,  initially,  Two Million Dollars  ($2,000,000) and
     shall be reduced by the dollar amount of each Loan.

     "Common Stock" shall have the meaning provided in Subsection 7.2(b).

     "Credit Documents" shall mean this Credit Agreement and the Note.

     "Credit Event" shall mean the making of any Loan.

     "Default" shall mean any event, act or condition which with notice or lapse
     of time, or both, would constitute an Event of Default.

     "Disbursement Date" shall have the meaning provided in Subsection 2.4. 

     "Events of  Default"  shall have the  meaning  provided in Section 6 of the
     Note.

     *****

     "Expiration  Date"  shall  have the  meaning  provided  in Section 2 of the
     Option Agreement.

***** Confidential Treatment Requested
<PAGE>



     "Fair Market Value" shall have the meaning provided in Subsection 7.2(c).

     "Initial Borrowing Date" shall mean the date on which the initial Borrowing
     occurs.

     "Lien" shall have the meaning provided in Subsection 4.2.

     "Loan" shall have the meaning provided in Subsection 2.1.

     "Maturity  Date"  shall mean a date that is twelve  (12)  months  after the
     Expiration Date.

     "Milestone  Date" shall mean a date that is three (3) months  after the day
     on which the Lender receives  written notice that the Company has completed
     the first surgical  procedure to implant the Company's initial product in a
     radial artery in a human subject in its formally  conducted clinical trials
     supervised  by the  United  States  Food  and Drug  Administration,  or the
     regulatory  equivalent  in the country in which  treatment  is  undertaken,
     provided  that such  human  subject  suffers no  Serious  Adverse  Event or
     Serious Adverse Device Effect during said three-month period.  

     "Note" shall have the meaning provided in Subsection 2.5.
     
     "Notice of  Borrowing"  shall have the meaning  provided in Subsection 2.3.

     *****

     "Person" shall mean any  individual,  partnership,  joint venture,  limited
     liability  company,  firm,   corporation,   association,   trust  or  other
     enterprise  or any  government  or  political  subdivision  or any  agency,
     department or instrumentality  thereof.

     *****
    
     "Serious  Adverse Event or Serious  Adverse  Device Effect" shall mean with
     respect to any such first implant which is the subject of a Milestone Date,
     an event or effect,  as  applicable,  which is recorded  by the  applicable
     investigator  which results in death,  is life  threatening,  is disabling,
     gives rise to a malignant tumor, is a congenital  anomaly in the offspring,
     fetal distress or death,  requires  hospitalization  (initial or prolonged)
     (but does not include planned hospitalization) and requires intervention to
     prevent permanent impairment or damage.

     "Total Consideration" shall have the meaning provided in Subsection 7.2(b).
                 
     "Unutilized  Commitment" shall mean at any time the Commitment at such time
     less the  aggregate  principal  amount of all Loans  made by the  Lender to
     date.

     "Warrant" shall have the meaning provided in Subsection 7.1.

2.   Amount and Terms of Credit.

     2.1 The Loan.  Subject to the terms and  conditions  set forth herein,  the
Lender agrees,  at any time and from time to time prior to the Maturity Date, to
make loans (any loan made by the Lender a "Loan") to the Company.  The aggregate
principal  amount of Loans  shall not at any time  exceed  Two  Million  Dollars
($2,000,000).

     2.2 Maximum Amount and Frequency of Each Borrowing. The aggregate principal
amount of each Loan hereunder  shall not be more than the Unutilized  Commitment
at such time.  After the initial  Borrowing  hereunder,  the  Company  shall not
request  additional  Loans pursuant to this Agreement more  frequently  than one
such Loan  request  during each thirty (30) day interval  following  the Initial
Borrowing Date.

     2.3 Notice of Borrowing.  Whenever the Company  desires to make a Borrowing
hereunder, it shall give the Lender at least two (2) business days prior written
notice of each Loan to be made  hereunder.  Each such notice  (each a "Notice of
Borrowing") shall be in the form of Exhibit A appropriately completed to specify
the  aggregate  principal  amount  of the  Loan  to be  made  pursuant  to  such
Borrowing,  and the date of such  Borrowing  (which shall be no earlier than the
next business day).

     2.4  Disbursement  of  Funds.  On the  date  specified  in each  Notice  of
Borrowing  (each such date a  "Disbursement  Date"),  the  Lender  will make the
amount of such Loan  available *****.

***** Confidential Treatment Requested
<PAGE>

     2.5 Note.  The  Company's  obligation to pay the principal of, and interest
on, the Loans shall be evidenced by a convertible  promissory note duly executed
and delivered by the Company  substantially in the form of Exhibit B with blanks
appropriately  completed in conformity herewith (the "Note"). The Note shall (i)
be payable to the order of the Lender and be dated the date hereof, (ii) be in a
stated  principal  amount equal to the original  amount of the Commitment and be
payable in the principal  amount of the Loans  evidenced  thereby,  (iii) to the
extent not prepaid,  mature, with respect to each Loan evidenced thereby, on the
Maturity Date, (iv) be entitled to the benefits of this Credit Agreement and (v)
bear  interest  on  the  outstanding  principal  of the  Loans  as  provided  in
Subsection 2.6.

     2.6 Interest.  The unpaid  principal  amount of each Loan from the date the
proceeds  thereof are made  available to the Company until the Maturity Date, or
until  prepaid by the Company,  shall bear interest at a rate equal to such rate
available  for an  equivalent  loan  to the  Lender  from  *****  Bank  on  such
Disbursement Date; provided,  however,  that such interest rate shall not exceed
ten percent (10%) per annum.  Interest  payable through the Expiration Date will
accrue and be added to the  principal on that date.  After the  Expiration  Date
interest will be payable quarterly until the Maturity Date.

     2.7  Prepayments.  The  Company  shall  have the right to prepay the Loans,
without premium or penalty,  in whole or in part from time to time upon ten (10)
business days prior written notice to the Lender. Any amount voluntarily prepaid
may not be  reborrowed,  but shall not  affect  the  availability  of any unused
portion of the original Commitment.

     2.8  Termination of Commitment.  The Lender's  Commitment  hereunder  shall
terminate on the earliest of (i) the date the aggregate  principal amount of the
Loans made to the Company  hereunder first reaches the amount of the Commitment;
(ii) the occurrence of an Event of Default under either of the Credit Documents;
or (iii) the Maturity Date.

3.  Conditions  Precedent.  The  obligation  of the  Lender  to make any Loan is
subject,  at the time of the  making of any  Loan,  to the  satisfaction  of the
following conditions:

     3.1 Execution of Credit Agreement;  Note. On the Initial Borrowing Date the
Company shall have  executed and  delivered to the Lender this Credit  Agreement
and the Note.

     3.2 No Default;  Representations and Warranties. At the time of each Credit
Event and also after  giving  effect  thereto (i) there  shall have  occurred no
Event of Default,  and (ii) all representations and warranties  contained in the
Credit  Documents and in the Investment  Agreement  shall be true and correct in
all material  respects with the same effect as though such  representations  and
warranties  had been  made on and as of such  date,  with  such  changes  in the
ordinary course of business as shall be reasonably acceptable to the Lender.

     3.3 Notice of Borrowing.  Prior to each Credit Event, the Lender shall have
received a Notice of Borrowing with respect thereto meeting the  requirements of
Subsection 2.3.

     3.4 Corporate Documents;  Proceedings.  All corporate and legal proceedings
and  all  instruments  and  agreements  in  connection  with  the   transactions
contemplated in the Credit Documents shall be satisfactory in form and substance
to the Lender,  and the Lender shall have received all information and copies of
all  documents  and  papers,  including  records of  corporate  proceedings  and
governmental  approvals,  if any, which the Lender reasonably may have requested
in  connection  therewith,  such  documents and papers where  appropriate  to be
certified by proper corporate or governmental authorities.

4. Representations,  Warranties and Agreements. In order to induce the Lender to
enter into this  Agreement and to make the Loans  hereunder,  in addition to the
representations,  warranties and agreements in the Investment  Agreement,  which
are  incorporated  herein,  the  Company  makes the  following  representations,
warranties  and  agreements  as of the Effective  Date,  which shall survive the
execution  and delivery of this Credit  Agreement and the Note and the making of
the Loans.

     4.1 Corporate Power and Authority.  The Company has the corporate power and
has taken all  corporate  proceedings  necessary  to execute  and  deliver,  and
perform the terms and provisions of, each of the Credit  Documents and has taken
all  necessary  corporate  action  to  authorize  the  execution,  delivery  and
performance  by it of  each of such  Credit  Documents.  The  Company  has  duly
executed  and  delivered  each of the Credit  Documents  to which the Company is
party,  and each of such  Credit  Documents  constitutes  the  legal,  valid and
binding  obligation of the Company  enforceable  in  accordance  with its terms,
except as the  enforcement  thereof  may be limited by  bankruptcy,  insolvency,
reorganization  or  other  similar  laws  relating  to or  affecting  rights  of
creditors and general equitable principles.

***** Confidential Treatment Requested
<PAGE>

     4.2 No Violation.  Neither the  execution,  delivery or  performance by the
Company  of the  Credit  Documents,  nor  compliance  by it with the  terms  and
provisions thereof, (i) will contravene any provision of any law, statute,  rule
or  regulation  or any  order,  writ,  injunction  or  decree  of any  court  or
governmental  instrumentality,  (ii) will  conflict or be  inconsistent  with or
result in any breach of any of the terms,  covenants,  conditions  or provisions
of, or  constitute a default  under,  or result in the creation or imposition of
(or the obligation to create or impose) any levy, lien,  encumbrance or security
interest  ("Lien") upon any of the property or assets of the Company pursuant to
the terms of, any indenture,  mortgage,  deed of trust,  credit agreement,  loan
agreement or any other material  agreement,  contract or instrument to which the
Company is a party or by which it or any of its  property  or assets is bound or
to which it may be subject or (iii) will  violate any  provision of the Articles
of Incorporation or Bylaws of the Company.

     4.3  Governmental   Approvals.  No  order,  consent,   approval,   license,
authorization  or  validation  of, or filing,  recording  or  registration  with
(except as have been obtained or made prior to the Effective Date), or exemption
by, any governmental or public body or authority, or any subdivision thereof, is
required to authorize,  or is required in connection  with,  (i) the  execution,
delivery and performance of the Credit Documents or (ii) the legality, validity,
binding effect or enforceability of the Credit Documents.

     4.4 Use of  Proceeds.  All  proceeds  from each  Loan  shall be used by the
Company in accordance  with and in  furtherance  of the Company's  Business Plan
dated January 20, 1998.

5. Affirmative Covenants.  The Company covenants and agrees that, from and after
the Effective Date and until the Commitment has terminated and the Loans and the
Note, together with interest,  and all other obligations  incurred hereunder and
thereunder,  are paid or otherwise  satisfied  in full,  it will comply with the
affirmative  covenants set forth in Sections 6.1, 6.2, 6.3, 6.4, 6.5 and 6.7 (c)
of the Investment Agreement.

6. Negative Covenants. The Company covenants and agrees that, from and after the
Effective  Date and until the  Commitment  has  terminated and the Loans and the
Note,  together  with  accrued  interest,  and all  other  obligations  incurred
hereunder  and  thereunder,  are paid or otherwise  satisfied  in full,  it will
comply with the negative  covenants set forth in Sections 6.6 and 6.7(a) and (b)
of the Investment Agreement.

7. Milestone Date. Upon the occurrence of the Milestone Date described herein:

     7.1 Warrant.  The Lender shall, within ten (10) business days following the
occurrence  of the  Milestone  Date,  execute  and deliver to ***** a Warrant to
purchase ten thousand  (10,000)  shares of the Lender's common stock at the Fair
Market  Value (as defined in the  Warrant)  substantially  in the form  attached
hereto as Exhibit C (the "Warrant"); provided, however, that this Subsection 7.1
shall  not  apply  if there  is less  than  $100,000  in  Unutilized  Commitment
remaining on such date.
                 
     7.2 *****

     (c) "Fair  Market  Value" per share of Common  Stock shall mean,  as of any
specified date on which the Common Stock is publicly traded,  the average of the
daily market prices of the Common Stock over the thirty (30) consecutive trading
days  immediately  preceding  (and not  including)  such date. The "daily market
price" for each such  trading day shall be (i) the closing  price on such day on
the  principal  stock  exchange  on which  the  Common  Stock is then  listed or
admitted to trading or on NASDAQ as  applicable,  (ii) if no sale takes place on
such day on any such  exchange  or system,  the  average of the  closing bid and
asked prices  regular way on such day for the Common Stock as officially  quoted
on any such exchange or system,  (iii) if the Common Stock is not then listed or
admitted to trading on any stock  exchange  or system,  the last  reported  sale
price regular way on such day for the Common Stock, or if no sale takes place on
such day,  the average of the closing bid and asked  prices for the Common Stock
on such day, as reported by NASDAQ or the National Quotation Bureau, (iv) in the
event  the  Common  Stock is not then  listed  or  admitted  to  trading  on any
securities  exchange and if no such  reported sale price or bid and asked prices
are available, the average of the reported high bid and low asked prices on such
day, as reported by a reputable  quotation  service,  or a newspaper  of general
circulation  in the City of Los Angeles  customarily  published on each business
day.  If the  daily  market  price  cannot be  determined  for the  thirty  (30)
consecutive trading days immediately preceding such date in the manner specified
in the  foregoing  sentence,  then the  Common  Stock  shall not be deemed to be
publicly traded as of such date. In such event,  the Fair Market Value per share
of the Common Stock shall be determined  in good faith by the Lender's  Board of
Directors and set forth in a written notice to *****.

     (d) *****

***** Confidential Treatment Requested
<PAGE>

8. Miscellaneous.

     8.1  Payment  of  Expenses,  etc.  The  Company  shall  pay all  reasonable
out-of-pocket  costs and expenses of the Lender in connection with the execution
and delivery of the Credit Documents and the documents and instruments  referred
to herein and therein (including,  without  limitation,  the reasonable fees and
disbursements  of counsel for the Lender in connection  herewith and therewith),
to a maximum of Ten Thousand Dollars ($10,000).

     8.2  Notices.  Any notice  required  under this Credit  Agreement  shall be
sufficient if sent by registered or certified mail postage and charges  prepaid,
return  receipt  requested,  or by hand delivery  including  overnight  delivery
service to the  following  addresses  or such address  hereinafter  specified in
writing:
                  the Lender:                Miravant Medical Technologies
                                             7408 Hollister Avenue
                                             Goleta, California 93117
                                             Attn: David E. Mai, President

                  the Company:               Ramus Medical Technologies
                                             346-B Bollay Drive
                                             Santa Barbara, California 93117
                                             Attn:  Charles S. Love, President

     8.3 No Waiver; Remedies Cumulative.  No failure or delay on the part of the
Lender in exercising any right,  power or privilege  hereunder or under the Note
and no course of dealing between the Company and the Lender or the holder of the
Note shall operate as a waiver thereof; nor shall any single or partial exercise
of any right power or privilege  hereunder or under the Note  preclude any other
or  further  exercise  thereof  or the  exercise  of any other  right,  power or
privilege  hereunder or thereunder.  The rights,  powers and remedies  expressly
provided  herein or in the Note are  cumulative and not exclusive of any rights,
powers or  remedies  which the Lender or the holder of the Note would  otherwise
have.  No notice  to or demand on the  Company  in any case  shall  entitle  the
Company  to  any  other  or  further  notice  or  demand  in  similar  or  other
circumstances  or  constitute a waiver of the rights of the Lender or the holder
of any Note to any other or further action in any  circumstances  without notice
or demand.

     8.4 Governing Law,  Severability.  This Credit  Agreement shall be governed
and  construed  in  accordance  with the laws of the  State of  California.  The
invalidity or  unenforceability  of any provision of this Credit Agreement shall
not affect the validity or  enforceability of any other provision of this Credit
Agreement,  and each other provision of the Credit  Agreement shall be severable
and enforceable to the fullest extent permitted by applicable law.

     8.5  Counterparts.  This Credit  Agreement may be executed in any number of
counterparts and by the different parties hereto on separate counterparts,  each
of which when so executed and delivered  shall be an original,  but all of which
shall together constitute one and the same instrument.

     8.6  Effectiveness;  Integration.  This  Credit  Agreement  and  the  Note,
together with all exhibits and schedules, constitute the entire agreement of the
parties with respect to the subject matter hereof and thereof.

     8.7  Headings  Descriptive.  The  headings  of  the  several  sections  and
subsections of this Credit Agreement are inserted for convenience only and shall
not in any way  affect the  meaning or  construction  of any  provision  of this
Credit Agreement.

     8.8 Amendment or Waiver. Neither this Credit Agreement nor the Note nor any
terms or hereof or thereof  may be changed,  waived,  discharged  or  terminated
unless such change, waiver, discharge or termination is in writing signed by the
Lender.

     8.9  Existing  Agreements.  The  parties to this  Credit  Agreement  hereby
expressly agree that each of the Existing Agreements are ratified, confirmed and
in full force and effect.

<PAGE>



     IN WITNESS  WHEREOF,  the parties hereto have caused their duly  authorized
officers to execute and deliver this Credit Agreement as of the date first above
written.

                    .                             RAMUS MEDICAL TECHNOLOGIES,
                                                  a California corporation


                                                  /S/
                                                  ------------------------------
                                                  Charles S. Love, President


                                                  /S/
                                                  ------------------------------
                                                  Michael E. Flynn, Secretary



                                                  MIRAVANT MEDICAL TECHNOLOGIES,
                                                  a Delaware corporation


                                                  /S/
                                                  ------------------------------
                                                  Gary S. Kledzik, Chairman


                                                  /S/
                                                  ------------------------------
                                                  Joseph E. Nida, Secretary


<PAGE>



                                    EXHIBIT A

                               NOTICE OF BORROWING


                                                                          (Date)

Miravant Medical Technologies
7408 Hollister Avenue
Goleta, California  93117

Attention:  David E. Mai, President

Gentlemen:

     The undersigned  refers to the Credit Agreement,  dated as of April 1, 1998
(as amended from time to time, the "Credit Agreement," the terms defined therein
being used herein as therein  defined),  among the  undersigned  and you, as the
Lender, and hereby gives you notice, irrevocably, pursuant to Section 2.3 of the
Credit  Agreement,  that the  undersigned  hereby requests a Borrowing under the
Credit  Agreement,  and in that  connection  sets  forth  below the  information
relating to such Borrowing (the "Proposed Borrowing") as required by Section 2.3
of the Credit Agreement:

     (i) The business day of the Proposed Borrowing is _____________, 199__.
            
     (ii)  The  aggregate   principal  amount  of  the  Proposed   Borrowing  is
$______________.

     (iii)  The  proceeds  of the  borrowing  will  be used  for  the  following
purposes:



     The undersigned hereby certifies that the following  statements are true on
the date hereof, and will be true on the date of the Proposed Borrowing:

            (A) The  representations  and  warranties  contained  in the  Credit
Documents and in the Investment  Agreement are correct,  before and after giving
effect to the Proposed Borrowing and to the application of the proceeds thereof,
as though made on and as of such date; and

            (B) No Default or Event of Default has occurred  and is  continuing,
or would  result from such  Proposed  Borrowing or from the  application  of the
proceeds thereof.

                                            Very truly yours,

                           RAMUS MEDICAL TECHNOLOGIES



                           Charles S. Love, President



                           Michael E. Flynn, Secretary



                                    EXHIBIT B

THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE
SECURITIES ACT OF 1933 OR QUALIFIED  UNDER THE SECURITIES  LAWS OF ANY STATE, IN
RELIANCE ON EXEMPTIONS FROM SUCH  REGISTRATION AND  QUALIFICATION  FOR NONPUBLIC
OFFERINGS.  ACCORDINGLY,  THE  SALE,  TRANSFER  OR  OTHER  DISPOSITION  OF  SUCH
SECURITIES OR ANY PORTION  THEREOF MAY NOT BE  ACCOMPLISHED IN THE ABSENCE OF AN
EFFECTIVE   REGISTRATION  STATEMENT  UNDER  SUCH  ACT  AND  QUALIFICATION  UNDER
APPLICABLE STATE  SECURITIES LAWS, OR AN OPINION OF COUNSEL  SATISFACTORY TO THE
COMPANY TO THE EFFECT THAT SUCH REGISTRATION AND QUALIFICATION ARE NOT REQUIRED.


                           CONVERTIBLE PROMISSORY NOTE


$2,000,000                                            Santa Barbara, California
                                                      April 1, 1998


         FOR VALUE  RECEIVED,  receipt  of which is hereby  acknowledged,  Ramus
Medical Technologies, a California corporation (the "Company"),  promises to pay
to the order of  Miravant  Medical  Technologies,  a Delaware  corporation  (the
"Lender") at the Lender's  offices  located at 7408  Hollister  Avenue,  Goleta,
California  93117 (or such other  place as Lender may direct from time to time),
on or prior to the Maturity Date (as defined in that certain  Credit  Agreement,
dated as of April 1, 1998, between the Company and Lender (the "Agreement")), in
lawful money of the United  States,  the  principal  sum of Two Million  Dollars
($2,000,000)  or, if less, the outstanding  principal amount of all unpaid Loans
(as defined in the Agreement) made by Lender pursuant to the Agreement, unless a
portion of this Note shall have been previously  converted pursuant to the terms
of this Note,  in which case such portion of  outstanding  principal and accrued
interest  (if any)  converted  under this Note shall be  satisfied to the extent
converted  and by the  issuance  and  delivery of fully paid and  non-assessable
shares of stock to the Lender as set forth below.

         The  Lender is hereby  authorized  by the  Company  to  endorse  on the
schedule attached to this Note (or any continuation  thereof) the amount of each
Loan made by the Lender to the Company under the  Agreement,  the date such Loan
is made and the amount of each payment, prepayment or conversion of principal of
such Loan  received  by the Lender,  provided  that any failure by the Lender to
make any such  endorsement  shall not  affect  the  obligations  of the  Company
hereunder or under the Agreement in respect of the Loans.  The aggregate  unpaid
amount of Loan advances as reflected on the schedule attached to this Note shall
be presumptive  evidence of the entire outstanding Loan amount,  absent manifest
error.

1. Interest; Usury Laws. 

         The Company promises also to pay interest at the rates and at the times
provided in this Note and the  Agreement.  The Company and the Lender  intend to
comply at all times with  applicable  usury laws. If at any time such laws would
render usurious any amounts due under this Note under applicable law, then it is
the  Company's  and the  Lender's  express  intention  that the  Company  not be
required to pay interest on this Note at a rate in excess of the maximum  lawful
rate,  that such excess  amount shall be  immediately  credited to the principal
balance of this Note (or,  if this Note has been  fully  paid,  refunded  by the
Lender to the Company), and the provisions hereof shall immediately reformed and
the amounts thereafter decreased, so as to comply with the then applicable usury
law, but so as to permit the recovery of the fullest amount  otherwise due under
this Note.

2. Prepayment.  

          The  Company  shall be  entitled at any time to  prepay any portion or
all of the  indebtedness  owed hereunder  without penalty upon ten (10) business
days prior  written  notice to permit the Lender to  exercise  its rights  under
Section 3 below (the "Series B Conversion  Right").  Each  prepayment  hereunder
shall be credited  first to accrued  interest  and then to  principal.  Interest
shall thereupon cease to accrue upon the principal so paid. Such prepayment will
be made by wire transfer of immediately available funds.

3. *****

         

4.  *****

***** Confidential Treatment Requested
<PAGE>

          

5. Representations and Warranties.

          Lender represents and warrants that:

          (a)  Lender is aware of the Company's  business  affairs and financial
               condition  and has  acquired  sufficient  information  about  the
               Company  to reach  an  informed  and  knowledgeable  decision  to
               purchase  this  Note.  Lender  has  had  an  opportunity  to  ask
               questions and receive answers concerning the terms and conditions
               of  this  Note  and  has  been  afforded  access  to  information
               concerning the Company and to the Company's  executive  officers,
               and by reason of Lender's  business and financial  experience has
               the capacity to protect  Lender's own interest in connection with
               the   transaction.   Lender  has   received   full  and  adequate
               information  concerning  the  Company  and its  proposed  plan of
               operations.

          (b)  Lender is acquiring  this Note,  and will  acquire  shares of the
               Company's  capital stock,  if so elected by Lender,  for Lender's
               own  account  and not with a view to or for resale in  connection
               with any distribution thereof.  Lender understands that this Note
               has not been,  and any  shares of the  Company's  capital  issued
               hereunder  will not be,  registered  under the  Securities Act of
               1933,  as  amended,  by reason of a specific  exemption  from the
               registration  provisions  of such Act,  which  exemption  depends
               upon,  among  other  things,  the bona fide  nature  of  Lender's
               investment intent and the accuracy of Lender's representations as
               expressed herein.  Lender further  understands that this Note and
               any shares of the Company's  capital stock issued  hereunder must
               be held  indefinitely  unless  they are  subsequently  registered
               under the Act or exemption from such  registration  is available.

          (c)  Lender   understands   that  the   certificate  or   certificates
               evidencing shares of the Company's capital stock issued hereunder
               will be  imprinted  with a legend  substantially  similar to that
               appearing at the top of this Note.

6.  Default. 

          If   any  of  the  following  events   (hereafter  called  "Events  of
Default") shall occur:

          (a)  If the  Company  shall not make a payment  hereunder  at the time
               that such payment is due;

          (b)  If the Company shall make a general assignment for the benefit of
               creditors; or

          (c)  If the Company shall file a voluntary petition in bankruptcy,  or
               shall be adjudicated as bankrupt or insolvent,  or shall file any
               petition  or  answer  seeking  any  reorganization,  arrangement,
               composition,  readjustment,  liquidation,  dissolution or similar
               relief under the present or any future Federal  Bankruptcy Act or
               other  applicable  federal,   state  or  other  statute,  law  or
               regulation,  or shall  file any  answer  admitting  the  material
               allegation  of a  petition  filed  against  the  Company  in such
               proceeding,  or shall  seek or  consent  to or  acquiesce  in the
               appointment of any trustee, receiver or liquidator of the Company
               of all or any substantial  part of the properties of the Company,
               or the Company shall  commence the winding up or the  dissolution
               or liquidation of the Company; or

          (d)  If,   within   sixty  (60)  days  after  a  court  of   competent
               jurisdiction  shall  have  entered an order,  judgment  or decree
               approving any complaint or petition  against the Company  seeking
               reorganization,  dissolution  or similar relief under the present
               or any future Federal Bankruptcy Act or other applicable federal,
               state or other statute, law or regulation,  such order,  judgment
               or decree shall not have been dismissed or stayed pending appeal,
               or if, within sixty (60) days after the appointment,  without the
               consent or acquiescence of the Company, of any trustee,  receiver
               or liquidator of the Company or of all or any substantial part of
               the properties of the Company,  such  appointment  shall not have
               been vacated or stayed pending  appeal,  or if, within sixty (60)
               days after the  expiration of any such stay,  shall not have been
               vacated; or

          (e)  If  Borrower  should  materially  breach  any of  the  covenants,
               representations,  warranties, terms or conditions of this Note or
               the Agreement or contained in any statement or certificate at any
               time given or made to Lender  pursuant  thereto or in  connection
               therewith,  and in the case of any breach of any representations,
               warranties  or covenants in the Agreement  capable of cure,  such
               breach shall  continue for thirty (30) days after notice  thereof
               from  Lender to the  Company;  then,  and in each and every  such
               case,  Lender may by notice in writing to the Company declare all
               amounts  under  this Note to be  forthwith  due and  payable  and
               thereupon  the balance  shall become so due and payable,  without
               presentation,  protest or  further  demand or notice of any kind,
               all of which are hereby expressly waived.

7. Transferability.

          This Note may be transferred  only upon surrender of the original Note
for  registration  of transfer,  duly endorsed or accompanied by a duly executed
written  instrument of transfer,  in a form satisfactory to the Company.  Lender
shall  provide the  Company  with  prompt  notice of any  transfer of this Note;
provided,  however,  that  failure to  provide  such  notice  shall not void the
transfer.  Upon  compliance of the above, a new Note for like  principal  amount
will be issued to, and registered in the name of, the transferee.  The principal
of this Note is payable only to the registered holder of this Note.

8. Use of Proceeds.

          The  Company  agrees to use the  proceeds of this Note as provided for
in the Company's Business Plan dated January 20, 1998.

<PAGE>



                                     6
9.  Governing  Law. 

          This Note is unsecured  and shall be governed by the laws of the State
of California.

         IN WITNESS WHEREOF,  this Note is executed as of the date first written
above.


                       RAMUS MEDICAL TECHNOLOGIES, a California corporation



                       By:  /S/
                            ------------------------------
                            Charles S. Love, President



                       By:  /S/
                            ------------------------------
                            Michael E. Flynn, Secretary

Agreed to and Accepted:

MIRAVANT MEDICAL TECHNOLOGIES,
a Delaware corporation



By:  /S/
     ------------------------------
     Gary S. Kledzik, Chairman



By:  /S/
     ------------------------------
     Joseph E. Nida, Secretary


<PAGE>





                                SCHEDULE OF LOANS
                                       AND
                              PAYMENTS OF PRINCIPAL

<TABLE>
<CAPTION>
<S>                      <C>                            <C>                       <C>    


Date                     Amount of Loan                 Amount Paid               Notations Made By







</TABLE>


                       



                         MIRAVANT MEDICAL TECHNOLOGIES/

                            XILLIX TECHNOLOGIES CORP.

                          STRATEGIC ALLIANCE AGREEMENT


                                    June 1998




















<PAGE>


            MIRAVANT MEDICAL TECHNOLOGIES/ XILLIX TECHNOLOGIES CORP.
                          STRATEGIC ALLIANCE AGREEMENT

                                Table of Contents


ARTICLE I - DEFINITIONS........................................................2


ARTICLE II - OWNERSHIP AND LICENSE.............................................5


ARTICLE III - RESEARCH, DEVELOPMENT AND FUNDING................................7


ARTICLE IV - COMMERCIAL SUPPLY.................................................9


ARTICLE V - MARKETING AND SALE OF CO-DEVELOPED DEVICES........................10


ARTICLE VI - PAYMENTS AND ACCOUNTING..........................................12


ARTICLE VII - REGULATORY RESPONSIBILITIES.....................................13


ARTICLE VIII - PATENTS........................................................14


ARTICLE IX - PUBLICATIONS AND CONFIDENTIALITY.................................15


ARTICLE X - WARRANTIES OF MRVT................................................16


ARTICLE XI - WARRANTIES OF XILLIX.............................................17


ARTICLE XII - MUTUAL WARRANTIES...............................................17


ARTICLE XIII - TERM & TERMINATION.............................................18


ARTICLE XIV - INDEMNIFICATION.................................................19


ARTICLE XV - MISCELLANEOUS....................................................20


ARTICLE XVI - BINDING EFFECT; ASSIGNMENT......................................22


ARTICLE XVII - RESOLUTION OF DISPUTES.........................................22







             MIRAVANT MEDICAL TECHNOLOGIES/XILLIX TECHNOLOGIES CORP.
                          STRATEGIC ALLIANCE AGREEMENT

     THIS MIRAVANT  MEDICAL  TECHNOLOGIES/XILLIX  TECHNOLOGIES  CORP.  STRATEGIC
ALLIANCE  AGREEMENT  ("Agreement")  entered  into this  ____ day of June,  1998,
between MIRAVANT MEDICAL TECHNOLOGIES,  a Delaware  corporation,  with corporate
offices at 7408 Hollister Avenue,  Santa Barbara,  California 93117 (hereinafter
referred  to as  "MRVT")  and  XILLIX  TECHNOLOGIES  CORP.,  a British  Columbia
corporation with corporate offices at #300 - 13775 Commerce  Parkway,  Richmond,
B.C. Canada V6V 2V4 (hereinafter referred to as "Xillix").

     WHEREAS,  MRVT is a pharmaceutical  and medical device company which, using
its  proprietary  technology  and  know-how,  has developed and will continue to
develop, on its own or in collaboration with third party vendors,  photoreactive
drugs and devices for use in photodynamic therapy;

     WHEREAS,  Xillix is a medical device company which,  using its  proprietary
technology and know-how,  has developed and will continue to develop, on its own
or in collaboration with third party vendors, Fluorescence Imaging Systems; and
    
     WHEREAS, MRVT and Xillix desire to exclusively co-develop and commercialize
new technology and devices  incorporating MRVT's Photodynamic Therapy technology
and Xillix's Fluorescence Imaging technology; and

     WHEREAS,  MRVT and  Xillix  are  concurrently  entering  into  Subscription
Agreements  (the  "Subscription")  pursuant to which MRVT will be investing FIVE
MILLION DOLLARS  ($5,000,000 U.S.) in Xillix through the combination of purchase
of Xillix common stock and issuance of MRVT common stock.

     NOW,  THEREFORE,  in  consideration  of the premises  and mutual  covenants
exchanged herein, the parties agree as follows:

                             ARTICLE I - DEFINITIONS

     1.01 Act.  The term  "Act"  shall mean the Food,  Drug &  Cosmetic  Act (21
U.S.C.  ss.  301,  et  seq.)  as such  shall be  amended  from  time to time and
regulations promulgated thereunder.

     1.02  Affiliate.  The term  "Affiliate"  shall  mean,  with  respect to any
specified  party,  any company that directly or  indirectly  through one or more
intermediaries,  controls, or is controlled by, or is under common control with,
the party specified.  For purposes of this definition,  "control" including with
correlative meanings,  the terms "controlled by" and "under common control with"
means  ownership  directly or indirectly of more than fifty percent (50%) of the
equity  capital  having the right to vote for election of  directors  (or in the
case  of  an  entity  other  than  a  corporation,   the  equivalent  management
authority).

     1.03 Clinical Evaluations.  The term "Clinical  Evaluations" shall mean any
tests performed by Xillix on  Co-Developed  Devices not reportable in regulatory
submissions.

     1.04  Clinical   Device.   The  term  "Clinical   Device"  shall  mean  any
Co-Developed   Device  or  MRVT  Component  or  Xillix  Component  used  in  the
Preclinical  Tests and Clinical  Trials  necessary for the support of regulatory
submissions as defined in writing by the Operating Committee.

     1.05  Clinical  Trials.  The term  "Clinical  Trials"  shall mean any tests
performed on humans in preparation and support of regulatory submissions.

     1.06 Co-Developed Device. The term "Co-Developed Device" shall mean any new
instrument,  device or product, or any functionally separable component thereof,
that embodies,  incorporates, is comprised of, functions or is produced by means
of, or derives its utility from, any Co-Developed Technology. This term does not
include the existing MRVT Components and Xillix Components.

     1.07 Co-Developed Technology. The term "Co-Developed Technology" shall mean
all new technology or systems  developed that incorporates a combination of MRVT
Technology and Xillix Technology. This term does not include MRVT Technology and
Xillix Technology.

     1.08 Fluorescence  Imaging. The term "Fluorescence  Imaging" shall mean the
use of  fluorescence/reflectance  spectroscopy and/or imaging for the purpose of
detection, diagnosis and dosimetry.

     1.09 Effective  Date. The "Effective  Date" of this Agreement  shall be the
date first written  hereinabove upon the execution of this Agreement by the last
of the parties to sign.

     1.10  FDA.  The term  "FDA"  shall  mean the  United  States  Food and Drug
Administration  or any successor agency having the  administrative  authority to
regulate  the  approval  for  testing  or  marketing  of  human  pharmaceutical,
biological  medical or medical  device  products in the United States (or, where
appropriate, the equivalent governmental authority in any foreign country).

     1.11 Field.  The term  "Field"  shall mean the Field of Oncology  and other
fields added by majority vote of the Operating Committee.

     1.12 GCP. The term "GCP" shall mean the  applicable  current good  clinical
practices  promulgated  from time to time by the FDA in accordance with the Act,
and which may be amended  from time to time (or the  equivalent  in any  foreign
country).

     1.13 GLP. The term "GLP" shall mean the applicable  current good laboratory
practices  promulgated  from time to time by the FDA in accordance with the Act,
and which may be amended  from time to time (or the  equivalent  in any  foreign
country).

     1.14  GMP.  The  term  "GMP"  shall  mean  the   applicable   current  good
manufacturing  practices  promulgated from time to time by the FDA in accordance
with the Act, and which may be amended from time to time (or the  equivalent  in
any foreign country).

     1.15  Gross  Sales.  The term  "Gross  Sales"  shall  mean the final  gross
invoiced  price from the sale of  Co-Developed  Devices  by the seller  (and its
Affiliates,  sublicensees  or marketing  partners).  In the event of a sale of a
Co-Developed Device to an Affiliate or sublicensee, and the subsequent resale by
such  Affiliate  or  sublicensee,  Gross Sales shall be computed on the basis of
such subsequent resale.

     1.16 IDE. The term "IDE" shall mean an  "investigational  device exemption"
application  or any other  application  submitted  to the FDA for the purpose of
conducting   clinical   investigations  of  a  device,  and  any  supplement  or
abbreviated application thereof (or the equivalent in any foreign country).

     1.17  IND.  The  term  "IND"  shall  mean  an  "investigational  new  drug"
application or any other application submitted to the FDA in accordance with the
Act for the  purpose of  conducting  clinical  investigations  of a drug and any
supplement or abbreviated  application thereof (or the equivalent in any foreign
country).

     1.18  Know-How.  The  term  "Know-How"  shall  mean  all  ideas,  concepts,
inventions (whether or not patentable), discoveries,  improvements,  unpublished
research and  development  information,  information  disclosed  (whether or not
claimed) in Patent applications or in issued Patents,  trade secrets,  technical
and  other  information  and data,  including,  without  limitation,  apparatus;
compositions;   methods;  processes;  techniques;  controls;  routines;  systems
(including quality assurance systems); procedures;  reports; operating, test and
performance data; and process, mechanical, material and product specifications.

     1.19 Manufacturing Partner. The term "Manufacturing Partner" shall mean the
party who manufactures the Co-Developed Device from time to time selected by the
Operating Committee.

     1.20  Marketing  Partner.  The  term  "Marketing  Partner"  shall  mean the
marketing  partner  from time to time  selected by the  Operating  Committee  to
market the Co-Developed Device.

     1.21 MRVT Component.  The term "MRVT  Component" shall mean any subassembly
or other part or device used for the  delivery of light  through a  Co-Developed
Device, whether proprietary to MRVT or not, developed,  manufactured,  licensed,
or  otherwise  capable  of being  provided  by MRVT for  incorporation  into and
manufacture of Co-Developed Devices.

     1.22 MRVT Drug.  The term "MRVT Drug" shall mean any  Photodynamic  Therapy
compound conceived by, owned by or licensed to MRVT or any of its Affiliates, to
the extent that MRVT has the right to use, make, sell or license such compound.

     1.23  MRVT  Technology.  The  term  "MRVT  Technology"  shall  mean  MRVT's
proprietary    pharmaceutical   and   medical   device   products   (trademarked
"PhotoPoint"), using the principles of Photodynamic Therapy.

     1.24  NDA.  The  term  "NDA"  shall  mean a New Drug  Application  or other
premarket  approval   application  for  a  MRVT  Drug,  and  any  supplement  or
abbreviated  application  relating  thereto,   submitted  to  the  FDA  (or  the
equivalent in any foreign country).

     1.25 Net  Sales.  The term "Net  Sales"  shall  mean  Gross  Sales less the
following:  tariffs,  import or export  duties,  excise,  value-added  and sales
taxes, where such tariffs,  duties or taxes are separately stated as part of the
sales price; customary trade, distributor,  quantity and cash discounts actually
given;  rebates and  adjustments  required  by  governmental  entities  and made
pursuant to  governmental  or private  third-party  health or medical  insurance
programs;  allowances  or credits for returns or  rejections.  In the event of a
sale to an  Affiliate  or a  sublicensee,  and  the  subsequent  resale  by such
Affiliate  or  sublicensee,  Net Sales  shall be  computed  on the basis of such
subsequent  resale.  In the  event  that any  Co-Developed  Device  is sold as a
component of another  product,  "Net Sales" shall mean the portion of such other
product's  invoice price that is allocable to the  Co-Developed  Device based on
the customary price of the  Co-Developed  Device when sold separately or, in the
absence of such customary  price,  on the ratio of the cost of the  Co-Developed
Device to the total cost of such other product.

     1.26 Patents.  The term "Patents"  shall mean all United States and foreign
patents,   including  improvement  patents,  patents  of  addition,  patents  of
importation, certificates of invention, utility model and design patents, method
patents,  and all  reissues,  renewals and  extensions  thereof;  and all United
States  and  foreign  patent  applications,   including  original,   divisional,
continuation  and  continuation-in-part  applications  pending before any patent
office.

     1.27 Photodynamic  Therapy. The term "Photodynamic  Therapy" shall mean the
technique of diagnosis  and/or  treatment  of abnormal or normal  biological  or
medical  conditions,  either  in-vivo  or  ex-vivo,  through  the  use of  drugs
activated by any type of electromagnetic  radiation or magnetic field, including
PhotoPoint.

     1.28 PMA.  The term "PMA"  shall mean a  Pre-Market  Approval  Application,
510(k) Application or any other application for regulatory approval of a device,
and any supplement or abbreviated application relating thereto, submitted to the
FDA (or the equivalent in any foreign country).

     1.29  Preclinical  Tests.  The  term  "Preclinical  Tests"  shall  mean any
nonhuman or human tests  performed  as part of the  Co-Development  research and
development  activity,   prior  to  preparation  and  support  of  a  regulatory
submission.

     1.30  Xillix  Component.   The  term  "Xillix  Component"  shall  mean  any
subassembly,  part or device,  whether  proprietary to Xillix or not, developed,
manufactured,  licensed,  or otherwise  capable of being  provided by Xillix for
incorporation into and manufacture of Co-Developed Devices.

     1.31 Xillix  Technology.  The term "Xillix  Technology" shall mean Xillix's
proprietary Fluorescence Imaging systems, including LIFE-Lung and LIFE-GI, using
the principles of Fluorescence Imaging.

                       ARTICLE II - OWNERSHIP AND LICENSE

     2.01 Ownership of Technology.

     MRVT retains all right,  title and interest in and to all MRVT  Technology,
MRVT Components and MRVT Drugs.  Xillix retains all right, title and interest in
and to all  Xillix  Technology  and  Xillix  Components.  All  right,  title and
interest in and to the Co-Developed  Technology and Co-Developed Device shall be
owned by the  parties as follows  unless  otherwise  agreed to in writing by the
parties:

                           MRVT             *****
                           Xillix           *****

     2.02 Distribution Rights to Marketing Partner.

     Subject to the terms of this  Agreement,  MRVT and Xillix hereby (i) grants
to the Marketing Partner an exclusive,  worldwide  distribution  right under the
Co-Developed Technology to use, distribute, and sell Co-Developed Devices in the
Field,  (ii) MRVT  grants  to the  Marketing  Partner  an  exclusive,  worldwide
distribution  right under the MRVT  Technology to use,  distribute  and sell the
MRVT Components in the Field,  but only when such MRVT Components are components
of  Co-Developed  Devices,  and (iii) Xillix grants to the Marketing  Partner an
exclusive,  worldwide  distribution  right under the Xillix  Technology  to use,
distribute  and sell the  Xillix  Components  in the  Field,  but only when such
Xillix Components are components of Co-Developed  Devices. The Marketing Partner
may  subdistribute,  totally or in part, the  distribution  rights granted to it
under  this  Section  2.02,  or  may  appoint  one  or  more  third  parties  to
subdistribute  Co-Developed  Devices  (including the Xillix  Components and MRVT
Components as described in (ii) and (iii) above);  provided,  however,  that (a)
the  Marketing  Partner  must  notify  the  parties  in  writing  of  each  such
subdistributor  at least thirty (30) days in advance;  (b) the Marketing Partner
remains  responsible  to the  parties  for all  contractual  obligations  of the
subdistributor,  including, but not limited to, keeping of records, reporting of
sales  and  payment  of  invoices,  as if the  subdistributor's  sales  were the
Marketing  Partner's sales and (c) the subdistributor  agrees to be bound by the
terms of this Agreement to the same extent as the Marketing Partner.

     2.03 Manufacturing Partner.

     Subject to the terms of this  Agreement,  MRVT and Xillix  hereby grants to
the Manufacturing Partner an exclusive,  worldwide,  manufacture right under the
Co-Developed Technology to make and manufacture, the Co-Developed Devices in the
Field solely for sale to the Marketing  Partner.  The Manufacturing  Partner may
subcontract, totally or in part, the manufacture rights granted to it under this
Section 2.03; provided,  however, that (a) the Manufacturing Partner must notify
the parties in writing of each such  subcontractor  at least thirty (30) days in
advance;  (b) the Manufacturing  Partner remains  responsible to the parties for
all contractual obligations of the subcontractor, including, but not limited to,
keeping of records, reporting and payment of invoices, as if the subcontractor's
responsibilities were the Manufacturing  Partner's  responsibilities and (c) the
subcontractor  agrees  to be bound by the  terms of this  Agreement  to the same
extent as the Manufacturing Partner.

***** Confidential Treatment Requested
<PAGE>

     2.04 Exclusivity.

     During the term of this Agreement,  or as otherwise agreed to in writing by
the parties: (i) neither party shall,  directly or indirectly,  grant any rights
in, to or under the Co-Developed  Technology to any third party,  whether in the
Field or not, except as provided in Sections 2.02 and 2.03 hereof;  (ii) neither
the  Marketing  Partner  nor  the  Manufacturing   Partner  shall,  directly  or
indirectly,  make, use,  distribute or sell Xillix Components or MRVT Components
apart from the  Co-Developed  Technology or purchase  Xillix  Components or MRVT
Components  from a third  party;  (iii)  neither the  Marketing  Partner nor the
Manufacturing  Partner,  nor Xillix or MRVT,  shall directly or indirectly make,
use, sell,  distribute or license  Co-Developed  Devices outside the Field; (iv)
neither Xillix or MRVT, nor the Marketing Partner or the  Manufacturing  Partner
shall,  directly or  indirectly,  make,  use,  sell,  distribute  or license any
Co-Developed  Device with any  Photodynamic  Therapy drug other than MRVT Drugs;
and (v) neither MRVT nor Xillix will engage in any activity with any third party
in the area of Photodynamic  Therapy,  in the case of Xillix, and in the area of
Fluorescence Imaging, in the case of MRVT, during the term of this Agreement and
for a period of ***** after  termination of this Agreement.  In the event of any
such termination of this Agreement for material breach, the non-breaching  party
shall not be subject to the ***** period described in
the prior sentence.

     2.05 *****
 
                 ARTICLE III - RESEARCH, DEVELOPMENT AND FUNDING

     3.01 Co-Development.

     MRVT and Xillix agree to use  reasonable  efforts to cooperate in the joint
development  of  Co-Developed   Technology  and  Co-Developed  Devices.   Unless
otherwise  agreed to in writing by the  parties,  the  parties  will pay for the
development and clinical trial costs in accordance with Article VI, and (i) MRVT
shall provide, during the development and Clinical Trial period, without charge,
MRVT Components for incorporation into and manufacture of Co-Developed  Devices;
and (ii) Xillix shall provide, during the development and Clinical Trial period,
without  charge,  Xillix  Components for  incorporation  into and manufacture of
Co-Developed  Devices.  In  addition,  each party will  provide  facilities  and
technical  support  without  charge to the  other  party.  Except  as  otherwise
provided  herein,  the joint  development  of the  Co-Developed  Technology  and
Co-Developed  Devices and the  provision of the MRVT  Components  and the Xillix
Components  shall be  coordinated  by an  "Operating  Committee" as set forth in
Section  3.02,  provided,   however,   that  MRVT  shall  solely  determine  the
appropriate MRVT Drugs.

     3.02 Operating Committee.

     Unless  otherwise  agreed to in writing by the parties,  within thirty (30)
days after the Effective Date the parties shall establish an operating committee
(the  "Operating  Committee")  consisting  of four (4)  members.  The  Operating
Committee  shall direct and monitor the research and  development  collaboration
between   MRVT  and  Xillix.   MRVT  and  Xillix  shall  each  appoint  two  (2)
representatives  to the Operating  Committee and the  Operating  Committee  will
select one member as Chairman.  The number of members of the Operating Committee
may be expanded at any time,  provided all members agree to do so in writing and
so long as each party has an equal number of  representatives.  Responsibilities
of the Operating  Committee shall include,  but are not limited to,  development
and approval of Co-Developed Device  specifications,  identification and pricing
of  MRVT  Components  and  Xillix   Components,   defining   Clinical   Devices,
establishing prices for the Co-Developed Devices,  testing protocols,  schedules
and budgets,  selection of the Marketing Partner and the Manufacturing  Partner,
and  review  and  approval  of  publications   and   presentations   related  to
Co-Developed  Technology and Co-Developed  Devices. Each member of the Operating
Committee  shall have one (1) vote and all decisions of the Operating  Committee
shall  require a  majority  vote.  In the  event of a tie vote of the  Operating
Committee, the matter shall be resolved in accordance with Article 17 hereof.

***** Confidential Treatment Requested
<PAGE>

     3.03 Research & Development and Clinical Evaluations.

     The  Operating   Committee  will  be  responsible   for  all  research  and
development activities as well as Clinical Evaluations.  Unless otherwise agreed
to in writing by the parties,  MRVT shall  contribute  MRVT  Components and MRVT
Drugs and Xillix shall contribute Xillix Components and Co-Developed Devices for
use in such Clinical  Evaluations and tests, each at no cost to the other. Also,
each party will provide  facilities and technical  support without charge to the
other party.  All other actual costs of all research,  development  and Clinical
Evaluations of Co-Developed  Devices shall be shared ***** percent ***** by MRVT
and ***** percent ***** by Xillix unless  otherwise  agreed to in writing by the
parties.

     3.04 Preclinical Tests of Co-Developed Devices.

     Unless  otherwise  agreed to in  writing  by the  parties,  (i) MRVT  shall
conduct  or arrange  for a third  party to  conduct,  all  reasonably  necessary
Preclinical Tests of Co-Developed  Devices,  and (ii) MRVT shall contribute MRVT
Components  and MRVT Drugs and Xillix shall  contribute  Xillix  Components  and
Co-Developed  Devices,  each at no cost to the  other.  Also,  each  party  will
provide  facilities and technical support without charge to the other party. All
actual costs of  Preclinical  Tests shall be shared *****  percent ***** by MRVT
and ***** percent ***** by Xillix unless  otherwise  agreed to in writing by the
parties.


<PAGE>



     3.05 Clinical Trials.

     Unless  otherwise  agreed to in  writing  by the  parties,  (i) MRVT  shall
conduct  or arrange  for a third  party to  conduct,  all  reasonably  necessary
Clinical Trials of  Co-Developed  Devices,  and (ii) MRVT shall  contribute MRVT
Components  and MRVT Drugs and Xillix shall  contribute  Xillix  Components  and
Co-Developed  Devices,  each at no cost to the  other.  Also,  each  party  will
provide  facilities and technical support without charge to the other party. All
other actual costs shall be paid by MRVT unless  otherwise  agreed to in writing
by the parties.

     3.06 Regulatory Submissions.

     MRVT shall prepare and submit,  or arrange for a third party to prepare and
submit,  in the name of MRVT, any  applicable  regulatory  submissions  covering
Co-Developed  Devices,  including  any  IDE or  IND  applications  which  may be
necessary for conducting  Clinical  Trials of Co-Developed  Devices.  The actual
costs of regulatory  submissions for Co-Developed Devices shall be paid by MRVT.
Unless otherwise agreed to in writing by the parties,  MRVT shall be responsible
for  securing   government   or  private  price   approvals  and   reimbursement
qualifications in preparation for product launch of Co-Developed  Devices in the
Fields.  MRVT and Xillix agree to provide each other with access to  information
or data relating to Co-Developed Devices which the other may need for regulatory
submissions or compliance. If necessary,  Xillix will file any amendments to its
existing FDA filings consistent with MRVT's regulatory filing and strategy.

***** Confidential Treatment Requested
<PAGE>

                         ARTICLE IV - COMMERCIAL SUPPLY

     4.01 Supply of Components.

     Each party shall provide all requirements of the Manufacturing  Partner for
MRVT  Components  or Xillix  Components  for use in  manufacturing  Co-Developed
Devices for commercial sale in the Field.  Each party shall sell MRVT Components
or Xillix  Components  to the  Manufacturing  Partner at  transfer  prices to be
determined by the Operating  Committee,  but not to exceed prices granted by the
parties to other customers for similar quantities.  If a party determines not to
provide  a  certain   component  to  the   Manufacturing   Partner  for  use  in
manufacturing a Co-Developed  Device for commercial sale in the Field, or cannot
supply such component to the Manufacturing  Partner, in either case for a period
of six (6) months,  then the parties,  through mutual  discussion in good faith,
shall negotiate a license for the Manufacturing  Partner and the  non-defaulting
party (the  "Non-Defaulting  Party") to  manufacture or have  manufactured  such
unavailable or non-supplied  components,  at the Non-Defaulting Party's own cost
and solely for use as a component in a  Co-Developed  Device in the Field.  Such
license shall include a royalty on commercially reasonable terms and conditions,
taking  into  account  the  respective  performance  of the  parties  under  the
Agreement and the relative investment of the parties in the Xillix Technology or
the MRVT  Technology,  as the case may be. In the case where a party  determines
not to  provide a  component  which it is then  providing  to the  Manufacturing
Partner,  such party  shall use  reasonable  efforts to  continue to supply such
component to the  Manufacturing  Partner or the other party for a period of nine
(9) months or until the  Manufacturing  Partner or the other party determines it
is able to supply such component, whichever is sooner.


<PAGE>



     4.02 Manufacture of Co-Developed Devices.

     The  Manufacturing  Partner  shall  have  the  exclusive  right  under  the
Co-Developed Technology to manufacture  Co-Developed Devices for commercial sale
in the Field, but only to the Marketing Partner.  In the event the Manufacturing
Partner  determines,  for any reason, not to manufacture a Co-Developed  Device,
for a period  of six (6)  months or  longer,  then the  Manufacturing  Partner's
rights shall terminate.  In such an event, the  Manufacturing  Partner shall use
reasonable efforts to continue to supply  Co-Developed  Devices to the Marketing
Partner,  at transfer prices to be determined by mutual  agreement in writing by
the parties,  but not to exceed prices granted by the  Manufacturing  Partner to
the Marketing Partner for similar quantities, for a period of nine (9) months or
until MRVT and Xillix have appointed a new Manufacturing Partner and are able to
supply Co-Developed Devices, whichever is sooner.

     4.03 Initial Forecast Requirements.

     At  least  six  (6)  months  prior  to  any  anticipated  FDA  approval  of
Co-Developed Devices, the Manufacturing Partner shall provide to MRVT and Xillix
a written forecast of its requirements for MRVT Components and Xillix Components
for the period  extending from that forecast date through the first full quarter
following such FDA approval.  This is the "Initial Forecast" for MRVT Components
and the Xillix  Components.  The MRVT Components and the Xillix Components shown
in the  Initial  Forecast  shall  be  considered  a firm  purchase  order by the
Manufacturing Partner.

     4.04 Order Forecasts.

     Each  quarter,  beginning  six (6)  months  prior  to any  anticipated  FDA
approval of Co-Developed  Devices, the Manufacturing  Partner shall provide MRVT
and  Xillix  written   forecasts  of  the  Manufacturing   Partner's   quarterly
requirements  for Components for the next twelve (12) month period (the "Rolling
Forecast").  Such Rolling  Forecasts  shall be for the purpose of assisting MRVT
and Xillix in its planning. In each quarter,  unless otherwise agreed to by MRVT
and Xillix, the quantities of MRVT Components and Xillix Components purchased by
the  Manufacturing  Partner shall not vary from the forecasted  quantity by more
than fifteen percent (15%).

     4.05 Purchase Orders and Shipment.

     The Manufacturing Partner shall order MRVT Components and Xillix Components
from MRVT and Xillix by submitting  written,  non-cancelable  purchase orders to
MRVT and Xillix  identifying  the quantity,  the MRVT  Components and the Xillix
Components ordered,  shipping  instructions,  including the common carrier to be
used and the place to which the goods  should be  delivered,  and the  requested
delivery  date.  No later  than ten (10)  business  days  after  receipt  of the
purchase order, MRVT and Xillix shall provide the Manufacturing Partner with the
shipping date.  MRVT  Components and Xillix  Components  shall be shipped in the
manner and to the location specified by the Manufacturing Partner.
<PAGE>
             ARTICLE V - MARKETING AND SALE OF CO-DEVELOPED DEVICES

     5.01 (i) Marketing and Sale of Co-Developed Devices.
                  
     Subject to the terms and conditions  hereof, the Marketing Partner selected
by the parties shall use its best reasonable  efforts to market the Co-Developed
Technology and shall provide all necessary  customer or other service,  shipping
and  receiving and  invoicing  services in support of the sales of  Co-Developed
Devices.

     5.01 (ii) Marketing and Sale of MRVT Drugs.
                  
     Subject to the terms and conditions  hereof,  MRVT, or a marketing  partner
selected by MRVT, shall use its best reasonable efforts to market the MRVT Drugs
in  connection  with the  Co-Developed  Devices and shall  provide all necessary
customer or other  service,  shipping and receiving  and  invoicing  services in
support  of the sales of MRVT  Drugs sold in  connection  with the  Co-Developed
Technology by the Marketing  Partner,  and MRVT shall pay to Xillix royalties on
the sale of MRVT Drugs as follows:

               (a) *****

               (b) *****

     5.02 Ownership of Trademarks.

     (a) The registration,  maintenance and protection of all trademarks,  logos
and/or  trade  dress  owned by  Xillix  for use in  connection  with the  Xillix
Components shall be the responsibility of Xillix. The registration,  maintenance
and protection of all trademarks, logos and/or trade dress owned by MRVT for use
in  connection  with  the  MRVT  Components  and the  MRVT  Drugs  shall  be the
responsibility of MRVT. Ownership of trademarks of Co-Developed Devices shall be
owned by the parties as follows,  unless  otherwise  agreed to in writing by the
parties:  MRVT *****, Xillix *****. The Co-Developed Device will be labeled with
a MRVT Trademark if requested by MRVT.

     (b) Each party  acknowledges that the other party owns all right, title and
interest  in their  respective  corporate  names,  logos  and are the  owners of
certain other  trademarks,  service marks,  and tradenames;  and that each party
will not  acquire  any  interest in any of these  trademarks,  service  marks or
tradenames  of the other  party by virtue of this  Agreement  or the  activities
under it.

     (c)  During the term of this  Agreement,  each  party may  indicate  to the
public and the trade that they have a business  relationship  with the other and
will be developing the Co-Developed  Devices and Co-Developed  Technology.  With
the  other  party's  prior  written  approval,  either  party  may  also use the
trademarks and tradenames of the other party to promote and solicit sales of the
Co-Developed  Devices and  Co-Developed  Technology if they strictly comply with
the other  party's  instructions  regarding  that use. Both parties agree not to
adopt  or use  those  trademarks  or  tradenames  of  the  other  party,  or any
confusingly  similar  word or  symbol,  as part of its  company  name or (to the
extent they have power to prevent such use) allow such names or marks to be used
by others.

     (d) At the expiration or termination of this Agreement,  both parties agree
to immediately  discontinue  any use of the corporate  name and all  trademarks,
tradenames  and  service  marks  of the  other  party,  as  well  as  any  other
combination of words, designs, trademarks or tradenames that would indicate that
such party has a business relationship with the other party.

***** Confidential Treatment Requested
<PAGE>


                      ARTICLE VI - PAYMENTS AND ACCOUNTING

     6.01  Payment  of  Research  and  Development,   Clinical  Evaluations  and
Preclinical Costs.


     Unless  otherwise  agreed in  writing,  during  Research  and  Development,
Clinical  Evaluations and Preclinical  Tests,  each party shall pay the expenses
thereof,   excluding  MRVT  Components,   Xillix  Components,   MRVT  Drugs  and
Co-Developed Devices, as follows:

                                   MRVT   *****
                                   Xillix *****

     All requests for expense reimbursement shall be made quarterly within sixty
(60) days of the end of each quarter.  Reimbursement  will be made within thirty
(30) days of the receipt of an invoice.  A party who receives an invoice may pay
the  invoice by setting  off sums owed to that  party by the  submitting  party,
excluding MRVT Components and Xillix Components.

     6.02 Payment of Clinical Trial Costs.

     During Clinical Trials,  excluding MRVT Components,  Xillix  Components and
the Co-Developed Device, MRVT will pay all Clinical Trial costs unless otherwise
agreed in writing.

     6.03 Payment for MRVT Components and Xillix Components.

     Once Co-Developed Devices are in commercial distribution,  each party shall
submit invoices to the  Manufacturing  Partner upon shipment of components.  The
Manufacturing  Partner  shall pay all  invoices,  plus all  applicable  taxes or
freight and other transportation charges stated thereon, within thirty (30) days
after date of invoice.

     6.04 Payment of Royalties.

     The  royalties  due under this  Agreement  shall be paid  quarterly  within
thirty (30) days after March 31, June 30,  September  30 and  December  31. Each
payment shall be accompanied by a report  containing  sufficient  information to
enable the other party to verify the accuracy of the calculation of Net Sales on
which such payment was based during the royalty period, including a statement of
Gross Sales and Net Sales and a  reconciliation  of the credits,  allowances and
rebates used to calculate Net Sales from Gross Sales.

     6.05 Payment of Monies.

     All  payments  made  pursuant to this  Agreement  by one party to the other
shall be made in U.S. dollars.


***** Confidential Treatment Requested
<PAGE>



     6.06 Late Payments.

     In the event any payment due pursuant to this  Agreement is not paid within
the time  specified,  in  addition  to  remitting  the amount of the  payment as
required  by this  Agreement,  the late  paying  party shall pay the other party
interest on such amount at the prime rate per annum,  as published  from time to
time in the Wall Street Journal;  such interest being payable on demand together
with all costs  incurred  by the  collecting  party to collect  the  amounts due
hereunder,   including,  but  not  limited  to,  reasonable  attorney  fees  and
disbursements.

     6.07 Books and Records.

     Each of MRVT and Xillix shall keep,  and shall cause their  Affiliates  and
the Manufacturing  Partner and Marketing Partner and sublicensees to keep, full,
true and accurate books of accounts and other records,  for a period of five (5)
years,  containing  sufficient detail as may be necessary for the other party to
properly ascertain and verify the costs and royalties payable to it hereunder in
accordance with generally accepted accounting principles.  Upon either MRVT's or
Xillix's  request,  the other party shall  permit an employee of the  requesting
party or an independent  certified  accountant  selected by the requesting party
(except one to whom the other has reasonable objection) to have access once each
year during  ordinary  business  hours to such  records as may be  necessary  to
determine the  correctness of any report and payment made under this  Agreement.
If an audit shows that either party has overstated costs or underpaid  royalties
by ten percent  (10%) or more,  for any financial  period  covered by the audit,
that party  shall,  in  addition  to  immediately  remitting  the amount of cost
overstatement or royalty underpayment, pay for the cost of such audit.

                    ARTICLE VII - REGULATORY RESPONSIBILITIES

     7.01 Compliance With Applicable Law.

     In exercising  the rights,  and in carrying out the duties and  obligations
set forth in this  Agreement,  each party  represents and warrants that it shall
comply with all applicable  state,  federal and other laws or rules.  Each party
further represents and warrants that it shall comply to the extent of its duties
hereunder  with all  applicable  state,  federal or other rules and  regulations
governing the manufacture, records, distribution,  promotion, marketing and sale
of Co-Developed Devices,  MRVT Components or Xillix Components,  as the case may
be,  and  that it shall  specifically  comply  with  GCPs,  GLPs,  GMPs or other
equivalent regulatory requirements of any country.

     7.02 Notification of FDA Action.

     MRVT and Xillix  shall  promptly  notify  each other of, and shall  provide
copies of, any  correspondence and other  documentation  received or prepared in
connection with any FDA action or notification  regarding  Co-Developed Devices.
MRVT and Xillix shall jointly determine whether a recall, field action, or other
regulatory  action is  warranted.  In the event of a total or partial  recall of
Co-Developed  Devices,  whether  voluntary  or mandated by law,  MRVT and Xillix
agree to cooperate  fully with each other to effect such recall.  In the event a
recall results from the gross negligence or willful  misconduct of either party,
then that party, whether MRVT or Xillix, shall bear the expenses associated with
such recall.  In the event a recall results from the gross negligence or willful
misconduct of both MRVT and Xillix,  then the parties shall  equitably share the
expenses  associated  with  such  recall,  to the  extent  that  each  party  is
responsible.

                             ARTICLE VIII - PATENTS

     8.01 Patents.

     If a patentable invention embodying Co-Developed Technology,  or related to
Co-Developed  Devices  or to the  Field,  is  conceived  in the  course  of this
Agreement  and reduced to practice  during the term of this  Agreement and for a
period of two (2) years after its  termination,  MRVT and Xillix shall  together
determine  whether to file patent  applications  covering  the  invention.  Both
parties  agree to begin  application  and  prosecution  in a timely  manner once
patentable inventions are identified and disclosed. Any such patent applications
shall be prepared by the parties and filed in the name of the parties as defined
in Section 2.01.  Xillix and MRVT shall prepare,  prosecute and maintain any and
all of their respective Patents embodying Co-Developed  Technology or related to
Co-Developed  Devices for the Field.  The reasonable  costs thereof shall be the
responsibility  of each party  separately  or shared  according to the ownership
thereof,  as defined in Section 2.01, and any rights hereunder shall be owned in
the same  proportions.  If either  party  elects not to  prepare,  prosecute  or
maintain any such Patent, then the other party shall have the right, but not the
obligation, to do so in its own name, at its own expense and for its own benefit
and  assignment of rights in such Patent.  If MRVT and Xillix  mutually agree in
writing to allow  either  party to utilize any Patent  outside  the Field,  such
agreement shall include, at a minimum, terms as to the development,  manufacture
and royalty obligations of the parties.

     8.02 Patent Infringement by Third Parties.

     If, during the term of this Agreement,  either MRVT or Xillix shall acquire
knowledge or have  reasonable  cause to believe that any patent rights  covering
Co-Developed Devices, Co-Developed Technology shall be infringed or used without
authorization  by any third party,  either MRVT or Xillix shall promptly  notify
the other of such knowledge. MRVT and Xillix agree to cooperate in making prompt
investigation of such possible infringement.

     8.03 Initiation of Action by MRVT or Xillix.

     If MRVT and Xillix  determine to jointly  institute any action described in
Section  8.02,  then MRVT and  Xillix  shall  share in the costs of such  action
according to the ownership as defined  thereof,  in Section 2.01 and in the full
recovery of any money or other property collected by way of judgment, settlement
(whether  prior to or after the  institution  of any  action or  proceeding)  or
otherwise  on any action  initiated  jointly by the  parties.  If either MRVT or
Xillix determines not to be involved in any such action, then it will execute an
assignment  of its rights to the other  party,  and the other party may take all
steps in the name of both parties  which are  necessary or advisable  including,
without  limitation,  the  institution  of any  action  or  proceeding  for  the
obtaining  of  damages  or  the  enjoinment  of  any  such  infringement  and to
prosecute,  settle,  compromise  or otherwise  dispose of the same.  That party,
whether MRVT or Xillix,  shall pay all costs taken pursuant to this Section 8.03
and  shall be  entitled  to the full  recovery  of any  money or other  property
collected  by way  of  judgment,  settlement  (whether  prior  to or  after  the
institution of any action or proceeding) or otherwise on any action initiated by
the party.

     8.04 Claims Against MRVT or Xillix.

     If any claim is made or action brought  against MRVT or Xillix based on the
claim that MRVT or Xillix is infringing  any third party patent rights by virtue
of  the  manufacture,  use or  sale  of  Co-Developed  Devices  or  Co-Developed
Technology  hereunder,  MRVT or Xillix shall  promptly so notify the other.  The
parties  shall then  consult  with each other as to the course of action to take
relative to such third party claim. Unless otherwise agreed to in writing by the
parties,  each party hereto  shall pay its own  expenses in  defending  any such
third  party  claim  and if they  cannot  agree,  then it shall be  resolved  in
accordance  with  Article 17 hereof.  MRVT shall be solely  responsible  for any
infringement claims related to MRVT's trademarks,  Patents or other intellectual
property,  including  the MRVT  Technology or the MRVT  Components,  and for all
damages related thereto. Xillix shall be solely responsible for any infringement
claims related to Xillix's trademarks,  Patents or other intellectual  property,
including the Xillix  Technology or the Xillix  Components,  and for all damages
related thereto.

     8.05 Damages to Third Party.

     If, in any such action  described  in Section  8.04,  a court of  competent
jurisdiction  determines  that MRVT or Xillix is obligated to pay damages to any
third person because the  manufacture,  use, sale,  distribution or licensing of
the  Co-Developed   Technology  or  Co-Developed  Devices  was  held  to  be  an
infringement  of a third party right,  the parties shall be responsible  for any
damages and associated  costs related  thereto in accordance  with the ownership
thereof, as defined in Section 2.01.



                  ARTICLE IX - PUBLICATIONS AND CONFIDENTIALITY

     9.01 Publication.

     (a) At least  thirty (30) days prior to the time either  party  submits any
data or articles related to Co-Developed  Technology or Co-Developed Devices for
publication or presentation,  the proposed  publication or presentation  must be
sent to the  Operating  Committee  for review  and  approval.  If the  Operating
Committee so decides, such publication or presentation can be delayed as long as
necessary to preserve U.S. or foreign patent or other property rights.

     (b)  The  parties   agree  that  neither  of  them  will  make  any  public
announcements  or issue any press release  arising out of or in connection  with
this  Agreement  without  consulting  with the other  party  prior to making any
announcement  or press release and the parties will use all  reasonable  effort,
acting  expeditiously  and  in  good  faith,  to  agree  upon a  text  for  such
announcement  or release which is  satisfactory  to each of them. If the parties
fail to agree upon such text,  the party  making the  disclosure  will make only
such public announcement or release as its counsel advises in writing is legally
required to be made.

     9.02 Confidential Information.

     Unless otherwise agreed to in writing by the parties,  the parties agree to
maintain  in  confidence   information  relating  to  MRVT  Technology,   Xillix
Technology,  Co-Developed  Technology or Co-Developed Devices (including without
limitation, information developed in Preclinical Tests and Clinical Trials), and
licenses,  Patents,  patent  applications,  technology or processes and business
plans of the other party, including, without limitation,  information designated
as  confidential  in  writing  from one party to another  (all of the  foregoing
hereinafter referred to as "Confidential  Information"),  disclosed to the other
and shall not,  during the term of this  Agreement  and for a period of five (5)
years thereafter, use such Confidential Information, except as permitted by this
Agreement  or  disclose  the same to anyone  other than  those of its  officers,
directors, employees, Affiliates and sublicensees as are necessary in connection
with either parties' activities as contemplated in this Agreement, provided that
these disclosees agree in writing to be similarly bound.

     9.03 Limitations on Confidentiality.

     The  obligation of  confidentiality  in Section 9.02 shall not apply to the
extent that (i) a party is required to disclose  information by applicable  law,
such as pursuant to Securities and Exchange Commission rules and regulations, or
by order of a governmental agency or a court of competent  jurisdiction;  (ii) a
party  can  demonstrate  that  the  disclosed  information  was,  at the time of
disclosure,  already in the public  domain  other than as a result of actions or
failure to act of a party, its officers,  directors,  employees,  Affiliates and
sublicensees in violation hereof; (iii) the disclosed information was rightfully
known by a party or its  Affiliates  or  sublicensees  (as shown by its  written
records)  prior to the date of disclosure to the other party in connection  with
this Agreement;  or (iv) a party can demonstrate that the disclosed  information
was received by a party or its  Affiliates or  sublicensees  on an  unrestricted
basis from a third  party which is not the other  party or an  Affiliate  of the
other party and not under a duty of  confidentiality,  and which was  rightfully
known to said source.


                         ARTICLE X - WARRANTIES OF MRVT

     10.01 Warranty.

     MRVT represents and warrants that MRVT Components and Co-Developed Devices,
at the time of shipment to Xillix, shall not have been misbranded or adulterated
within the meaning of the Act,  or of any  applicable  state or local law.  MRVT
further  represents and warrants that MRVT Components  sold to Xillix  hereunder
shall  have  been  manufactured,   packaged,  labeled,  stored  and  shipped  in
conformity with all applicable GMP requirements.

     10.02 No Other Product Warranties.

     Except  as  expressly  provided  for in  this  Article  X,  MRVT  makes  no
representations  or warranties of any nature whatsoever with respect to the MRVT
Components, the MRVT Technology the Co-Developed Technology and the Co-Developed
Devices,  and ALL  OTHER  WARRANTIES,  EXPRESS  OR  IMPLIED,  INCLUDING  IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR  PURPOSE,  ARE HEREBY
DISCLAIMED BY MRVT AND ITS AFFILIATES.

     10.03 Product Liability Insurance.

     Upon  commencement of Clinical Trials,  MRVT shall obtain product liability
insurance  in  such  reasonable  amounts  as  is  customary  for  pharmaceutical
companies  in the United  States and shall name  Xillix as an  additional  named
insured on its policy of product liability insurance.  MRVT shall not cancel the
insurance  policy or fail to renew it without  providing  Xillix with sixty (60)
days notice in advance of such cancellation or non-renewal.

     10.04 Limitation on Liabilities.

     MRVT  will  not  be   responsible   to  Xillix  or  any  third   party  for
consequential,  extraordinary  or punitive  damages.  MRVT's total liability for
damages to Xillix  under this  Agreement,  excluding  any  liability  for direct
damages,   lost  profits  and  reasonable  attorneys'  fees,  shall  not  exceed
$2,000,000.00, regardless of the form of action.


                        ARTICLE XI - WARRANTIES OF XILLIX

     11.01 Warranty.

     Xillix  represents and warrants that Xillix  Components shall not have been
misbranded or  adulterated  within the meaning of the Act, or of any  applicable
state or local law.  Xillix  further  represents  and  warrants  that the Xillix
Components shall have been manufactured,  packaged,  labeled, stored and shipped
in conformity with all applicable GMP requirements.

     11.02 No Other Product Warranties.

     Except as  expressly  provided  for in this  Article  XI,  Xillix  makes no
representations  or  warranties  of any nature  whatsoever  with  respect to the
Xillix Components or the Xillix Technology, and ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED,  INCLUDING  IMPLIED  WARRANTIES  OF  MERCHANTABILITY  AND FITNESS FOR A
PARTICULAR PURPOSE, ARE HEREBY DISCLAIMED BY XILLIX AND ITS AFFILIATES.

     11.03 Product Liability Insurance.

     Upon commencement of Clinical Trials, Xillix shall obtain product liability
insurance  in  such  reasonable  amounts  as is  customary  for  medical  device
companies in Canada and shall name MRVT as an  additional  named  insured on its
policy of product  liability  insurance.  Xillix shall not cancel the  insurance
policy or fail to renew it without providing MRVT with sixty (60) days notice in
advance of such cancellation or non-renewal.

     11.04 Limitation on Liabilities.

     Xillix   will  not  be   responsible   to  MRVT  or  any  third  party  for
consequential,  extraordinary or punitive damages.  Xillix's total liability for
damages  to MRVT  under  this  Agreement,  excluding  any  liability  for direct
damages,   lost  profits  and  reasonable  attorneys'  fees,  shall  not  exceed
$2,000,000.00, regardless of the form of action.


                         ARTICLE XII - MUTUAL WARRANTIES

     12.01 Right, Power and Authority to Execute.

     Each party  hereby  represents  and warrants to the other party that it has
full  right,  power and  authority  to enter  into this  Agreement  and that the
Agreement has been duly authorized by all necessary actions of its directors and
shareholders and constitutes a valid and binding obligation.

     12.02 Corporate Good Standing.

     Each  party  represents  and  warrants  to the  other  party  that  it is a
corporation  duly organized and validly  existing and in good standing under the
laws of its respective  jurisdiction of  incorporation  and that no governmental
approval  or  consent  of any third  party is  necessary  for the  execution  or
delivery  by such  party of this  Agreement  or for the  legality,  validity  or
enforceability of this Agreement as to such party.


<PAGE>



     12.03 Duration of Representations and Warranties.

     Each  party   represents   and   warrants  to  the  other  party  that  the
representations  and  warranties  set forth in  Articles X, XI, and XII shall be
true as of the Effective Date of this Agreement.


                        ARTICLE XIII - TERM & TERMINATION

     13.01 Term of Agreement.

     This  Agreement  shall  be  effective  as  of  the  date  first  set  forth
hereinabove  ("Effective Date"), and shall continue in full force and effect for
seven  (7) years  from the date of first NDA  approval  for  commercial  sale of
Co-Developed  Devices. If an NDA is not approved by December 31, 2003, then this
Agreement shall continue for an additional period of one year, which shall renew
automatically for additional periods of one year, unless either party decides to
terminate this Agreement  upon thirty (30) days prior written  notice.  Provided
that both parties agree in writing, at least one hundred eighty (180) days prior
to the expiration of the then-existing term, MRVT and Xillix may have the option
to extend the term of this Agreement by successive two (2) year periods. Subject
to the other terms and conditions of this Agreement,  royalty  payments  payable
hereunder shall continue for the life of the Co-Developed products.

     13.02 Termination for Material Breach.

     Either party may terminate this Agreement in the event of a material breach
by the other, provided that the party asserting such breach first serves written
notice of the alleged  material  breach on the offending  party and such alleged
breach is not cured within thirty (30) days of said notice, unless such material
breach  cannot  reasonably  be cured within said period,  in which case the cure
period will be extended ninety (90) days if the offending party has commenced to
cure the  material  breach  within the thirty (30) day period and  continues  to
diligently effect such cure. The nondefaulting  party can, at its option,  waive
the right to terminate the Agreement and specifically enforce this Agreement.  A
material breach of the  Subscription  Agreement will be deemed a material breach
of this Agreement.

     13.03 Termination for Insolvency.

     In the event that  either  party  becomes  insolvent  or shall  suspend its
business,  or shall  file a  voluntary  petition  or any  answer  admitting  the
jurisdiction of the court and the material  allegations of, or shall consent to,
an  involuntary  petition  pursuant  to or  purporting  to be  pursuant  to  any
reorganization  or  insolvency  law  of  any  jurisdiction,  or  shall  make  an
assignment  for the benefit of  creditors,  or shall apply for or consent to the
appointment  of a  receiver  or  trustee  of all or a  substantial  part  of its
property  (such  party,  upon the  occurrence  of any such  event,  a  "Bankrupt
Party"), and if such proceeding is not terminated within sixty (60) days of such
a filing,  then to the extent  permitted  by the law  another  party  hereto may
thereafter  immediately  terminate  this  Agreement by giving  written notice of
termination to the Bankrupt Party.


<PAGE>




     13.04 Effect of Expiration or Termination.

     Expiration or earlier  termination of this  Agreement  shall not extinguish
rights or obligations  previously  accrued or vested,  and Sections 2.04,  2.05,
4.01,  5.01(ii),  5.02, 6.07, 8.01, 8.02, 8.03, 8.04, 8.05, 9.02, 10.01,  10.02,
10.03,  10.04, 11.01, 11.02, 11.03, 11.04, 14.01, 14.02, 14.03, 15.03, 17.01 and
17.02 hereof shall survive the termination of this Agreement.



                          ARTICLE XIV - INDEMNIFICATION

     14.01 MRVT Indemnity.

     MRVT  agrees to  indemnify,  protect  and  defend  Xillix  and hold  Xillix
harmless from and against any claims,  damages,  liability,  harm, loss,  costs,
penalties,  lawsuits,  threats of lawsuit, recalls or other governmental action,
including  reasonable  attorneys'  fees,  brought or claimed by any third  party
which (i)  arise as the  result of  MRVT's  breach of this  Agreement  or of any
warranty or representation  made by MRVT under this Agreement;  (ii) result from
the negligent  acts or willful  malfeasance on the part of MRVT or its employees
or agents, or (iii) result from any claim made against Xillix in connection with
MRVT's manufacture or sale of defective MRVT Components or Co-Developed Devices.
Upon the filing of any such legal claim or lawsuit against Xillix,  Xillix shall
promptly  notify  MRVT,  in writing,  of any such claim and MRVT  shall,  at its
expense,  with attorneys  reasonably  acceptable to Xillix,  handle,  defend and
control such claim or lawsuit.

     14.02 Xillix Indemnity.

     Xillix agrees to indemnify, protect, and defend MRVT and hold MRVT harmless
from and against any claims, damages, liabilities, harm, loss, costs, penalties,
lawsuits,  threats of lawsuit,  recalls or other governmental action,  including
reasonable  attorneys'  fees,  brought or claimed by any third party,  which (i)
arise as a result of Xillix's  breach of this  Agreement  or of any  warranty or
representation  by  Xillix  under  this  Agreement;  or,  (ii)  result  from the
negligent acts or willful  malfeasance on the part of Xillix or its employees or
agents,  or (iii)  result from any claim made against  MRVT in  connection  with
Xillix's  manufacture  or  sale  of  defective  Components  or the  Co-Developed
Devices.  Upon the filing of any such legal claim or lawsuit  against MRVT, MRVT
shall promptly notify Xillix, in writing, of any such claim and Xillix shall, at
its expense, with attorneys reasonably  acceptable to MRVT, handle,  defend, and
control such claim or lawsuit.

     14.03 Notice of Defense of Actions.

     Each party shall give the other prompt notice of any  potential  liability,
and  promptly  after  receipt  by a party  claiming  indemnification  under this
Article XIV, of notice of the commencement of any action, such indemnified party
shall  notify  the  indemnifying  party of the  commencement  of the  action and
generally  summarize such action. The indemnifying party shall have the right to
participate  in and to assume the  defense of such  action  with  counsel of its
choosing.  An indemnifying  party shall not have the right to direct the defense
in such an action of an indemnified  party if counsel to such indemnified  party
has  reasonably  concluded  that there may be defenses  available to it that are
different  from or  additional  to those  available to the  indemnifying  party;
provided, however, that in such event, the indemnified party shall bear the fees
and expenses of separate  counsel  reasonably  satisfactory to the  indemnifying
party. The failure to notify an indemnifying  party promptly of the commencement
of any such action,  if prejudicial to the ability to defend such action,  shall
relieve such indemnifying  party of any liability to the indemnified party under
this  Article  XIV. No  settlement  of any claim or action,  or decision  not to
appeal a judgment,  may be made  without the consent of the  indemnifying  party
(which consent shall not be unreasonably withheld or delayed).


                           ARTICLE XV - MISCELLANEOUS

     15.01 Force Majeure.

     No party to this  Agreement  shall be liable to another party for any loss,
injury, delay, damage or other casualty suffered or incurred by such other party
due to strikes, lockouts, accidents, fire, delays in manufacture, transportation
or delivery of material, embargoes,  inability to ship, explosions, floods, war,
governmental  action or any other  cause  similar  thereto  which is beyond  the
reasonable  control of such other  party and any  failure or delay by a party in
the performance of any of its obligations  under this Agreement,  other than for
the payment of money,  shall not be considered as a breach of this Agreement due
to, but only so long as there exists, one or more of the foregoing causes.

     15.02 Relationship.

     This Agreement  shall not be construed to create between the parties hereto
or their  respective  successors  or permitted  assignees  the  relationship  of
principal  and  agent,   joint  ventures,   co-partners  or  any  other  similar
relationship,  the existence of which is hereby  expressly denied by each party.
The parties  shall not be liable to any third  party in any way for  engagement,
obligation, contract,  representation or transaction or for any negligent act or
omission to act of the other except as expressly provided.

     15.03 Governing Law.

     The provisions of this  Agreement  shall be governed in all respects by the
laws  of  the  State  of  California,  without  regard  to the  conflict  of law
provisions  thereof,  or the United  Nations  Convention  on  Contracts  For the
International Sale of Goods.

     15.04 Notice.

     All  notices,  proposals,   submissions,   offers,  approvals,  agreements,
elections,   consents,   acceptances,   waivers,   reports,   plans,   requests,
instructions and other communications  required or permitted to be made or given
hereunder  (all  of  the  foregoing  hereinafter  collectively  referred  to  as
"Communications")  shall be in  writing,  and  shall be deemed to have been duly
made or given when: a) delivered personally with receipt  acknowledged;  b) sent
by registered or certified mail or equivalent,  return receipt requested,  or c)
sent by facsimile or telex (which shall  promptly be confirmed by a writing sent
by registered or certified mail or equivalent,  return receipt requested), or d)
sent by recognized overnight courier for delivery within twenty-four (24) hours,
in each case  addressed or sent to the parties at the  following  addresses  and
facsimile  numbers or to such other or  additional  address or  facsimile as any
party shall hereafter specify by communication to the other parties:


<PAGE>



                  To MRVT:                  Miravant Medical Technologies
                                            7408 Hollister Avenue
                                            Santa Barbara, CA  93117
                                            Attention:  President
                                            Facsimile:  805-685-2959

                  With a copy to:           Nida & Maloney, P.C.
                                            800 Anacapa Street
                                            Santa Barbara, CA   93101
                                            Attention:   Joseph E. Nida
                                            Facsimile:  805-568-1955

                  To Xillix:                Xillix Technologies Corp.
                                            #300 - 13775 Commerce Parkway
                                            Richmond, B.C. Canada  V6V 2V4
                                            Attention:   President and Chief 
                                                         Executive Officer
                                            Facsimile:  604-278-5111

                  With a copy to:           Fraser & Beatty
                                            15th Floor, The Grosvenor Building
                                            1040 W. Georgia Street
                                            Vancouver, B.C., V6E 4H8
                                            Attention:  Gary Sollis
                                            Facsimile:  604-683-5214

Notice of change of address  shall be deemed given when actually  received,  all
other Communications  shall be deemed to have been given,  received and dated on
the  earlier  of:  (i) when  actually  received,  or on the date when  delivered
personally;  (ii) one (1) day after being sent by facsimile,  cable, telex (each
promptly confirmed by a writing as aforesaid) or overnight courier;  or four (4)
business days after mailing.

     15.05 Legal Construction.

     In case any one or more of the provisions contained in this Agreement shall
be invalid or unenforceable in any respect,  the validity and  enforceability of
the remaining  provisions  contained  herein shall not in any way be affected or
impaired  thereby  and the  parties  will  attempt  to  agree  upon a valid  and
enforceable  provision  which shall be a reasonable  substitute for such invalid
and unenforceable  provision in light of the tenor of this Agreement,  and, upon
so agreeing, shall incorporate such substitute provision in this Agreement.

     15.06 Entire Agreement, Modifications, Consents, Waivers.

     This Agreement contains the entire agreement of the parties with respect to
the subject matter hereof.  This Agreement may not be modified or amended except
by an  instrument  or  instruments  in writing  signed by the party against whom
enforcement of any such  modification or amendment is sought.  Each party hereto
may, by an instrument in writing,  waive compliance by another party hereto with
any term or  provision  of this  Agreement on the part of such other party to be
performed or complied with. The waiver by either party hereto of a breach of any
term or  provision of this  Agreement  shall not be construed as a waiver of any
other or subsequent breach.

     15.07 Section Headings; Construction.

     The section  headings and titles  contained  herein are each for  reference
only and shall not be deemed to affect  the  meaning or  interpretation  of this
Agreement. The words "hereby", "herein", "hereinabove",  "hereinafter", "hereof"
and "hereunder",  when used anywhere in this Agreement,  refer to this Agreement
as a whole and not merely to a subdivision  in which such words  appear,  unless
the context  otherwise  requires.  The singular  shall  include the plural,  the
conjunctive shall include the disjunctive and the masculine gender shall include
the feminine and neuter, and vice versa, unless the context otherwise requires.

     15.08 Execution Counterparts.

     This Agreement may be executed in any number of counterparts  and each such
duplicate  counterpart  shall  constitute  an original,  any one of which may be
introduced in evidence or used for any other purpose  without the  production of
its duplicate counterpart. Moreover, notwithstanding that any of the parties did
not  execute  the same  counterpart,  each  counterpart  shall be deemed for all
purposes to be an original,  and all such counterparts  shall constitute one and
the same instrument, binding on both of the parties hereto.

                    ARTICLE XVI - BINDING EFFECT; ASSIGNMENT

     16.01 Binding Effect and Assignment.

     This  Agreement  shall inure to the benefit of and be binding  upon each of
the parties hereto and their  respective  successors  and assigns.  Neither this
Agreement,  nor any of the rights and obligations  under this Agreement,  may be
assigned,  transferred  or otherwise  disposed of by either party  without prior
written  consent  of the  other  party,  unless  such  assignment,  transfer  or
disposition is to a successor to substantially all the business or assets of the
transferor;  provided that,  such successor  shall in any event agree in writing
with the other  party to assume all  obligations  of the  transferor  under this
Agreement in a manner satisfactory to the other party.  Subject to the foregoing
limitations, the Agreement shall be binding upon and inure to the benefit of the
respective successors and assigns of the parties.

     16.02 Right to Seek Assurance.

     In the  event all or  substantially  all of the  assets  of either  MRVT or
Xillix are  acquired by a third  party,  the  non-acquired  party shall have the
right  pursuant to Section 16.01 to receive  written  assurance  from such third
party that the third party intends to  faithfully  perform all of the duties and
obligations  of the  acquired  party set forth in this  Agreement.  The acquired
party  shall  take all  necessary  action to enable the  non-acquiring  party to
obtain such written assurance.

                      ARTICLE XVII - RESOLUTION OF DISPUTES

     17.01 Resolutions.

     Any and all disputes  arising out of or in connection  with this  Agreement
unable to be resolved by the  Operating  Committee  shall be  negotiated in good
faith by the Presidents of MRVT and Xillix to achieve a reasonable resolution of
such issue.

     17.02 Arbitration.

     Any and all disputes arising out of or related to this Agreement, and which
are not resolved in  accordance  with  Section  17.01  hereof,  shall be finally
settled by arbitration in accordance with the rules of the American  Arbitration
Association by arbitrators  familiar with medical  technology.  The  arbitration
will be held in Los Angeles, California, on consecutive business days. The award
rendered shall be final and binding upon the parties.  Judgment on any award may
be entered in any court having  jurisdiction  over the parties or their  assets.
Notwithstanding  anything to the contrary contained in this paragraph, or to the
extent any claims relate to the validity, construction, scope, enforceability or
infringement  of any Patent  Rights,  such  claim  shall not be  required  to be
submitted to arbitration hereunder and shall be resolved by a court of competent
jurisdiction.  The  costs of the  arbitration  shall be  shared  equally  by the
parties. Each party will pay their own attorneys' fees and costs.

                                                [Signatures on next page.]



<PAGE>




     IN WITNESS WHEREOF, the parties have cause this Agreement to be executed as
of the day and year first written above.

MIRAVANT MEDICAL TECHNOLOGIES


By:/S/
   ------------------------------
Title:__________________________________

Date:___________________________________



XILLIX TECHNOLOGIES CORP.

By:/S/
   ------------------------------
Title:__________________________________

Date:___________________________________




                             SUBSCRIPTION AGREEMENT

TO:               MIRAVANT MEDICAL TECHNOLOGIES (the "Corporation")

1. The  undersigned  hereby  irrevocably  subscribes for and agrees to purchase,
subject  to the terms and  conditions  of  this  Subscription  Agreement, 58,909
common shares in the capital of the Corporation (the "Purchased Securities") for
an aggregate  consideration  of $2,000,000  (U.S.),  representing a subscription
price of $33.95 (U.S.) per Purchased Security.

2.  By  executing  this  Subscription  Agreement,  the  undersigned  represents,
warrants and covenants to the Corporation (and acknowledges that the Corporation
and its counsel are relying thereon) that:

     (a)  the  issue  and  sale  of  the  Purchased  Securities  to  it  or,  if
          applicable,  to  any  purchaser  on  whose  behalf  it is  contracting
          hereunder,  is  being  made  in  reliance  upon  exemptions  from  the
          requirements as to the involvement of a registered  dealer, the filing
          of a prospectus and the delivery of an offering  memorandum as set out
          in securities  legislation in British Columbia relating to the sale of
          the Purchased Securities;

     (b)  the   Purchased   Securities   will  be  subject  to  certain   resale
          restrictions under applicable securities laws and that the undersigned
          agrees  to  comply  with  such  restrictions.   The  undersigned  also
          acknowledges  that it has been  independently  advised with respect to
          applicable resale  restrictions,  that no representation has been made
          to it by or on behalf of the Corporation with respect thereto and that
          it is solely responsible for complying with such restrictions (and the
          Corporation  is  not in  any  manner  responsible  for  ensuring  such
          compliance);

     (c)  it is aware of the  characteristics of the Purchased  Securities,  the
          risks  relating to an investment  therein and of the fact that it will
          not be able to resell the  Purchased  Securities  except in accordance
          with limited  exemptions under applicable  securities  legislation and
          regulatory policy;

     (d)  it has not received,  nor has it requested,  nor does it have any need
          to receive, any offering memorandum, or any other document (other than
          financial  statements,  interim  financial  statements  or  any  other
          document,  other than an offering memorandum,  the content of which is
          prescribed  by statute or  regulation)  describing  the  business  and
          affairs of the  Corporation  which has been  prepared for delivery to,
          and review by, prospective  purchasers in order to assist it in making
          an investment  decision in respect of the Purchased  Securities and it
          is not aware of any  advertisement  in printed  media of  general  and
          regular  paid  circulation,  radio or  television  with respect to the
          distribution of the Purchased Securities;

     (e)  it is a British Columbia corporation whose principal place of business
          is in British  Columbia,  and at which this  investment  decision  was
          made;

     (f)  it is  purchasing  the  Purchased  Securities as principal for its own
          account,  not for the benefit of any other person, and not with a view
          to the resale or distribution of the Purchased Securities;

     (g)  it has an  aggregate  acquisition  cost of  purchasing  the  Purchased
          Securities of not less than $97,000;

     (h)  it has  not  been  formed  solely  or  primarily  for the  purpose  of
          purchasing the Purchased  Securities  pursuant to exemptions  from the
          prospectus and/or registration  requirements of applicable  securities
          legislation;

     (i)  it will not  resell or  otherwise  transfer  or  dispose of any of the
          Purchased  Securities  except in accordance with the provisions of all
          applicable securities laws;

     (j)  it has been  afforded  with  full  access to all  relevant  financial,
          technical,  operational  and  corporate  information  relating  to the
          Corporation  and  the  Purchased  Securities,  has  been  afforded  an
          opportunity  to ask  such  questions  of the  Corporation's  officers,
          employees,  agents,  accountants  and  representatives  concerning the
          foregoing and all other relevant matters as it has deemed necessary or
          desirable, has been given all such information that has been requested
          in order to assess  and  evaluate  the  Purchased  Securities  and the
          merits and the risks of the transactions  contemplated herein, and, as
          a  result,  has  acquired   sufficient   information   concerning  the
          Corporation  to make  an  informed  and  knowledgeable  decision  with
          respect to the purchase of the Purchased Securities;

     (k)  this  Subscription  Agreement  has been duly and  validly  authorized,
          executed and delivered by and constitutes a legal, valid,  binding and
          enforceable obligation of the undersigned;

     (l)  it has such knowledge and experience in financial and business affairs
          as to be capable of evaluating  the merits and risks of its investment
          in the Purchased  Securities  and is able to bear the economic risk of
          loss of its investment;

     (m)  if required by applicable securities  legislation,  policy or order or
          securities  commission,  stock exchange or other regulatory authority,
          the undersigned will execute,  deliver,  file and otherwise assist the
          Corporation  in filing,  such reports,  undertakings,  forms and other
          documents with respect to the issue of the Purchased Securities as may
          be  required by any  securities  commission,  stock  exchange or other
          regulatory authority;

     (n)  the Purchased Securities are not being purchased by the undersigned as
          a result of any material  information  concerning the Corporation that
          has not been  publicly  disclosed  and the  undersigned's  decision to
          tender this offer and acquire the  Purchased  Securities  has not been
          made as a result of any verbal or written representation as to fact or
          otherwise made by or on behalf of the  Corporation or any other person
          and is based  entirely upon  currently  available  public  information
          concerning the Corporation;

     (o)  it understands  that the Purchased  Securities  have not been and will
          not  be  registered  under  the  U.S.  Securities  Act  or  any  state
          securities law, and that the sale contemplated hereby is being made in
          reliance on Rule 506 of  Regulation  D under the U.S.  Securities  Act
          ("Regulation D");

     (p)  it is an "accredited investor" as defined in Rule 501(a) of Regulation
          D;

     (q)  if it decides  to offer,  sell or  otherwise  transfer  the  Purchased
          Securities,   such  securities  may  be  offered,  sold  or  otherwise
          transferred  only (i) to the  Corporation,  (ii)  outside  the  United
          States  in  accordance  with Rule 904 of  Regulation  S under the U.S.
          Securities  Act, or (iii) inside the United States in accordance  with
          (A) Rule 144A under the U.S. Securities Act to a person who the seller
          reasonably believes is a Qualified  Institutional Buyer (as defined in
          Rule 144A) that is  purchasing  for its own account or for the account
          of a  Qualified  Institutional  Buyer to whom notice is given that the
          offer,  sale or transfer  is being made in reliance on Rule 144A,  (B)
          the exemption from registration under the U.S. Securities Act provided
          by Rule 144 thereunder,  if applicable,  or (C) with the prior written
          consent of the Corporation,  another exemption from registration under
          the U.S. Securities Act.

     (r)  all certificates representing the Purchased Securities, as well as all
          certificates  issued  in  exchange  for  or  in  substitution  of  the
          foregoing securities, will bear a legend to the following effect:

               THE SECURITIES  REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
               THE UNITED STATES  SECURITIES  ACT OF 1933, AS AMENDED (THE "U.S.
               SECURITIES   ACT"),   THE  HOLDER  HEREOF,   BY  PURCHASING  SUCH
               SECURITIES,   AGREES  FOR  THE   BENEFIT  OF   MIRAVANT   MEDICAL
               TECHNOLOGIES  THAT  SUCH  SECURITIES  MAY  BE  OFFERED,  SOLD  OR
               OTHERWISE  TRANSFERRED ONLY (A) TO MIRAVANT MEDICAL TECHNOLOGIES,
               (B)  OUTSIDE  THE UNITED  STATES IN  ACCORDANCE  WITH RULE 904 OF
               REGULATION  S UNDER THE U.S.  SECURITIES  ACT,  OR (C) INSIDE THE
               UNITED  STATES IN  ACCORDANCE  WITH (1) RULE 144A  UNDER THE U.S.
               SECURITIES ACT TO A PERSON WHO THE SELLER REASONABLY  BELIEVES IS
               A QUALIFIED INSTITUTIONAL BUYER (AS DEFINED IN RULE 144A) THAT IS
               PURCHASING  FOR HIS OWN ACCOUNT OR FOR THE ACCOUNT OF A QUALIFIED
               INSTITUTIONAL  BUYER TO WHOM NOTICE IS GIVEN THAT THE OFFER, SALE
               OR  TRANSFER  IS BEING MADE IN  RELIANCE  ON RULE  144A,  (2) THE
               EXEMPTION  FROM  REGISTRATION  UNDER  THE  U.S.   SECURITIES  ACT
               PROVIDED BY RULE 144  THEREUNDER,  IF AVAILABLE,  OR (3) WITH THE
               PRIOR WRITTEN CONSENT OF MIRAVANT MEDICAL  TECHNOLOGIES,  ANOTHER
               EXEMPTION FROM REGISTRATION UNDER THE U.S. SECURITIES ACT."

          provided  that the legend shall be removed at any time after the first
          anniversary  of the date of issue of the  Purchased  Securities,  upon
          request  by the  holder of such  securities; 

     (s)  it understands and acknowledges  that the Corporation may instruct its
          registrar  and transfer  agent not to record a transfer  without first
          being  notified  by the  Corporation  that it is  satisfied  that such
          transfer is exempt from or not subject to registration  under the U.S.
          Securities Act; and

     (t)  it  acknowledges  that,   pursuant  to  British  Columbia   Securities
          Commission  Blanket  Order  BOR#95/17,  an initial trade report in the
          prescribed  form in respect of the resale of the Purchased  Securities
          must be filed within 10 days of the initial  trade of such  securities
          and where the undersigned has filed such an initial trade report,  the
          undersigned  is not  required  to file a further  report in respect of
          additional  trades of Purchased  Securities  acquired on the same date
          and under the same exemption as the Purchased  Securities that are the
          subject of the initial trade report.

     The  undersigned  acknowledges  that  the  foregoing   representations  and
warranties  are made by it with the  intent  that  they  may be  relied  upon in
determining  the  undersigned's  eligibility  to subscribe  for and purchase the
Purchased  Securities  hereunder.   The  undersigned  further  agrees  that,  by
accepting the Purchased Securities on the Closing Date, it shall be representing
and warranting that the foregoing  representations and warranties are true as at
the  Closing  Date with the same force and effect as if they had been made by it
at the Closing Time.

3. The Corporation  represents,  warrants and covenants to the undersigned  (and
acknowledges that the undersigned is relying thereon) that:

     (a)  the Corporation and each of its subsidiaries is a valid and subsisting
          corporation,  duly  incorporated  or amalgamated  and in good standing
          under the laws of its jurisdiction of incorporation;

     (b)  the common shares of the Corporation are listed and posted for trading
          on the National Market System of NASDAQ ("NASDAQ") and, to the best of
          its knowledge, the Corporation is not in default of any of the listing
          requirement of NASDAQ;

     (c)  the authorized share capital of the Corporation consists of 50,000,000
          common shares,  of which,  as of May 26, 1998,  14,073,401  shares are
          issued and outstanding as fully paid and non-assessable;

     (d)  the common  shares of the  Corporation  are  registered  under Section
          12(g) of the U.S. Securities Exchange Act of 1934, as amended, and the
          Corporation  has filed all  material  required  by Section 13 or 15(d)
          thereof during the 12 months prior to the Closing Date;

     (e)  no person,  firm or corporation holds any securities  convertible into
          shares of the Corporation or has any agreement, warrant, option, right
          or  privilege  being or capable of  becoming  an  agreement,  warrant,
          option or right for the  purchase,  subscription  or  issuance  of any
          unissued  securities  of the  Corporation,  except  pursuant  to  this
          Agreement  and,  as of June 1, 1998,  pursuant  to  options  which are
          exercisable  or  exchangable  into  an  aggregate  of  not  more  than
          2,327,461 common shares of the  Corporation,  and pursuant to warrants
          which are  exercisable  or  exchangable  into an aggregate of not more
          than 2,911,052 common shares of the Corporation;

     (f)  upon their  issuance on the Closing  Date,  the Common  Shares will be
          validly  issued  and  outstanding  as fully  paid  and  non-assessable
          securities of the Corporation;

     (g)  on the Closing Date,  the Common  Shares will have been  conditionally
          approved for listing and posted for trading on the  Exchange,  subject
          to the  Corporation  fulfilling  all  requirements  of the Exchange in
          connection therewith;

     (h)  the Corporation and each of its  subsidiaries  has the corporate power
          and  capacity to own and lease its assets and to carry on its business
          as now conducted by it;

     (i)  the  Corporation  and  each  of its  subsidiaries  is  conducting  its
          business in material  compliance with all applicable  laws,  rules and
          regulations of each  jurisdiction  in which its business is carried on
          and is duly licensed,  registered or qualified in all jurisdictions in
          which it owns,  leases or operates its property or carries on business
          to enable  its  business  to be carried  on as now  conducted  and its
          property  and  assets to be owned,  leased and  operated  and all such
          licences,  registrations and  qualifications  are valid and subsisting
          and in good  standing,  except in respect of matters  which do not and
          will not  result  in any  material  adverse  change  to the  business,
          business  prospects  or  condition  (financial  or  otherwise)  of the
          Corporation and its subsidiaries, on a consolidated basis;

     (j)  the audited  financial  statements of the  Corporation  for its fiscal
          period  ended   December  31,  1997  (the   "Corporation's   Financial
          Statements")  present fairly the financial position and results of the
          operations  of the  Corporation  for the  periods  then  ended and the
          Corporation's  Financial  Statements  have been prepared in accordance
          with generally accepted accounting  principles applied on a consistent
          basis;

     (k)  except as publicly  disclosed,  since  December 31, 1997 there has not
          been  any  adverse  material  change  of any  kind  whatsoever  in the
          financial  position or  condition of the  Corporation,  or any damage,
          loss  or  other  change  of  any  kind  whatsoever  in   circumstances
          materially affecting the business or assets of the Corporation, or the
          right or capacity of the Corporation to carry on its business;

     (l)  there  has not  been  any  material  change  in the  capital  stock or
          long-term debt or in the assets, liabilities or obligations (absolute,
          accrued,  contingent  or  otherwise)  of  the  Corporation,   and  its
          subsidiaries,  on a consolidated  basis,  since December 31, 1997 that
          has not been publicly disclosed;

     (m)  there has not been any  material  change  in,  and there  have been no
          material  facts,  transactions,  events  or  occurrences  which  could
          materially   adversely  affect,  the  business,   business  prospects,
          condition (financial or otherwise) or results of the operations of the
          Corporation,  and its  subsidiaries,  on a consolidated  basis,  since
          December 31, 1997 that has not been publicly disclosed;

     (n)  except as has been  publicly  disclosed,  since  December 31, 1997 the
          Corporation and each of its  subsidiaries  has carried on its business
          in the ordinary course;

     (o)  to the best of its knowledge,  except as publicly disclosed, there are
          no actions,  suits,  judgments,  investigations  or proceedings of any
          kind  whatsoever  outstanding,  pending or threatened by or against or
          affecting the  Corporation or its  subsidiaries,  if any, at law or in
          equity or before or by any federal,  provincial,  state,  municipal or
          other governmental  department,  commission,  board, bureau or agency,
          domestic or foreign,  of any kind  whatsoever,  which will  materially
          adversely  affect the business,  operations or financial  condition of
          the Corporation, and its subsidiaries, on a consolidated basis, or any
          of its assets or properties,  or which materially adversely affects or
          may  materially  adversely  affect the  distribution  of the Purchased
          Securities  or any  action  taken or to be  taken  by the  Corporation
          pursuant to or in connection with this Subscription  Agreement and, to
          the best of its knowledge, there is no basis therefor;

     (p)  no securities commission or similar regulatory authority in Canada has
          issued any order preventing or suspending trading in any securities of
          the Corporation;

     (q)  the  Corporation  will,  prior to the Closing  Time,  fulfil all legal
          requirements  (including,  without  limitation,  compliance  with  all
          applicable  securities  laws) to be  fulfilled by the  Corporation  to
          enable  the  Purchased  Securities  to be  offered  for  sale  to  the
          undersigned as contemplated in this Subscription Agreement;

     (r)  to the best of its knowledge, the Corporation or, as applicable,  each
          of its subsidiaries, is not in default or breach of, and the execution
          and delivery of, and the  performance of and compliance with the terms
          of this Subscription  Agreement,  does not and will not conflict with,
          or result in any  breach of or the  acceleration  of any  indebtedness
          under, or constitute a default under, and does not and will not create
          a state of facts which,  after notice or lapse of time or both,  would
          result  in a breach of or  constitute  a  default  under,  any term or
          provision of the memorandum,  articles,  by-laws or resolutions of the
          Corporation (including its subsidiaries),  or any indenture, contract,
          agreement  (written  or oral),  instrument,  lease or other  document,
          including  without  limitation the contracts to which the  Corporation
          (including its  subsidiaries)  is a party or by which it is bound,  or
          any judgment, decree, order, statute, rule or regulation applicable to
          the Corporation (including its subsidiaries),  which default or breach
          might  reasonably  be  expected  to  materially  adversely  affect the
          business, operations, capital or condition (financial or otherwise) of
          the  Corporation   (including  its  subsidiaries)  or  its  assets  or
          properties;

     (s)  the  Corporation  has full corporate power and authority to enter into
          this  Subscription  Agreement and to perform its  obligations  set out
          herein  and this  Subscription  Agreement  has been  duly  authorized,
          executed and delivered by the  Corporation  and is a legal,  valid and
          binding  obligation  of  the  Corporation,   enforceable  against  the
          Corporation in accordance with its terms except that:

               (i)  the  enforcement  thereof  may  be  limited  by  bankruptcy,
                    insolvency  and other  laws  affecting  the  enforcement  of
                    creditors' rights generally;

               (ii) equitable remedies including,  without limitation,  specific
                    performance  and  injunction  may  be  granted  only  in the
                    discretion of a court; and

               (iii)rights   of   indemnity,    contribution   and   waiver   of
                    contribution may be limited under applicable law;

     (t)  there  is  not,  in  the  constating   documents  or  by-laws  of  the
          Corporation or in any agreement,  mortgage, note, debenture, indenture
          or other  instrument or document to which the  Corporation is a party,
          any  restriction  upon or impediment to the  declaration or payment of
          dividends by the Corporation to the holders of its common shares.  The
          representations  and warranties of the  corporation  contained in this
          Subscription  Agreement  shall be true at the  Closing  Time as though
          they were made at the Closing Time;

     (u)  set out in  Schedule  B hereto  is a  complete  list of all  plans and
          arrangements  under which  options or other  rights to acquire  shares
          have been  granted by the  Corporation,  or under which  shares of the
          Corporation have been reserved for issuance, which, in each case, sets
          forth the number of shares  reserved for  issuance  under such plan or
          arrangement   and  the  number  of  options   and/or   similar  rights
          outstanding thereunder, in each case as of June 1, 1998;

     (v)  the Corporation  agrees to file a Form D with respect to the Purchased
          Securities  with the U.S.  Securities  and  Exchange  Commission  (the
          "SEC") as required under Regulation D and to provide a copy thereof to
          the  undersigned  within fifteen (15) days after the Closing Date. The
          Corporation  shall,  on or prior to the Closing Date, take such action
          as is  necessary  under all  applicable  Securities  Laws (as  defined
          below) to sell the  Purchased  Securities  to the  undersigned  in the
          manner contemplated in this Agreement,  and to provide evidence of any
          such  action so taken to the  undersigned  on or prior to the  Closing
          Date.  "Securities  Laws" shall mean the  securities  laws,  rules and
          regulations  of  Canada,  of the  United  States,  and  of any  state,
          province or governmental  or regulatory  authority of Canada or of the
          United States, including blue sky laws;

     (w)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided  that it continues to be a reporting  issuer under the
          applicable  securities  laws of the United  States of America and that
          the  undersigned  continues to hold any of the  Purchased  Securities,
          timely  file all  reports  required  to be filed  with all  applicable
          securities  regulatory  authorities,  and the  Corporation  shall not,
          during such period, terminate its status as an issuer required to file
          reports under any applicable  Securities  Law even if such  Securities
          Law would permit such termination;

     (x)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided  that  the  undersigned  continues  to hold any of the
          Purchased  Securities  and  that  the  Corporation  continues  to be a
          reporting  issuer under the applicable  securities  laws of the United
          States of America, send the following reports to the undersigned:  (i)
          within  three (3) business  days after the filing with any  securities
          regulatory  authority,  a copy  of each  annual,  quarterly  or  other
          periodic  report,  each proxy statement and each current  report;  and
          (ii) within one (1) business day after  release,  a copy of each press
          release issued by the Corporation or any of its subsidiaries;

     (y)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided that the Corporation  continues to satisfy the listing
          requirements  of the  National  Market  System of NASDAQ  and that the
          undersigned  continues  to  hold  any  of  the  Purchased  Securities,
          continue the uninterrupted listing and trading of its common shares on
          the  National  Market  System  of NASDAQ  and on any other  securities
          exchange on which any of its  securities  may be or become  listed and
          traded,  and comply in all respects with the Corporation's  reporting,
          filing and other  obligations under the By-laws or rules of NASDAQ and
          any such other securities exchange; and

     (z)  the  Corporation  will use the  proceeds of the sale of the  Purchased
          Securities   for  working   capital  and/or  such  other  purposes  as
          management  or  the  Board  of  Directors  of  the  Corporation  shall
          determine.

4. The sale of the Purchased Securities will be completed at the offices of Nida
& Maloney, the Corporation's counsel, in Santa Barbara, California at 10:00 a.m.
(Pacific  daylight  time),  or  such  other  time  as the  Corporation  and  the
undersigned  may agree upon in writing (the "Closing  Time") on June 2, 1998, or
such other date as the Corporation and the undersigned may agree upon in writing
(the "Closing Date").  The certificate for the Purchased  Securities  subscribed
for by the  undersigned  hereunder  will,  on the  Closing  Date,  be issued and
registered in the name set out in the Registration  Instructions  below and will
promptly  thereafter be delivered in accordance  with the Delivery  Instructions
below.

5. The obligation of the undersigned to complete the  subscription  contemplated
hereby will be subject to and  conditional  on the  fulfilment  on or before the
Closing Time of the following conditions, compliance with which may be waived in
whole or in part by the  undersigned,  at any time, in its  discretion  and upon
such terms as it may consider appropriate:

     (a)  the representations and warranties of the Corporation contained herein
          will  be  true  at  and  as  of  the  Closing   Time  as  though  such
          representations and warranties were made again at and as of such time;

     (b)  the  Corporation  will have performed and complied with all covenants,
          agreements and conditions  required hereby to be performed or complied
          with by the Corporation prior to Closing Time;

     (c)  the  Purchased  Securities  will have been  approved  for  listing and
          trading on the National  Market System of NASDAQ,  subject only to the
          filing of all required  documents and the payment of the required fees
          within the times stipulated by NASDAQ;

     (d)  no order,  judgment,  injunction,  decree, award or writ of any court,
          tribunal,  arbitrator,  governmental  agency or other person will have
          been  entered  that  prohibits  or  restricts  the  completion  of the
          subscription  or which,  in the  opinion  of the  undersigned,  acting
          reasonably, could prevent or restrict any party hereto from performing
          any of its obligations hereunder;

     (e)  the undersigned will have received a favourable written opinion of the
          Corporation's  counsel,  dated the Closing Date,  substantially in the
          form attached hereto as Schedule A;

     (f)  the  purchase by the  Corporation  of 2,691,904  common  shares in the
          capital of the undersigned, at an aggregate subscription price of Can.
          $7,187,384, pursuant to a subscription agreement of even date; and

     (g)  the execution and delivery of a Strategic  Alliance  Agreement between
          the Corporation and the undersigned,  in form and substance acceptable
          to each of them.

6. The obligation of the Corporation to complete the  transactions  contemplated
hereby will be subject to and  conditional  on the  fulfillment on or before the
Closing Time of the following conditions, compliance with which may be waived in
whole or in part by the  Corporation,  at any time, in its  discretion  and upon
such terms as it may consider appropriate:

     (a)  the representations and warranties of the undersigned contained herein
          will  be  true  at  and  as  of  the  Closing   Time  as  though  such
          representations and warranties were made again at and as of such time;

     (b)  the  undersigned  will have performed and complied with all covenants,
          agreements and conditions  required hereby to be performed or compiled
          with by the undersigned prior to the Closing Time;

     (c)  the  Purchased  Securities  will have been  approved  for  listing and
          trading on the National  Market System of NASDAQ,  subject only to the
          filing of all required  documents and the payment of the required fees
          within the times stipulated by NASDAQ;

     (d)  no order,  judgment,  injunction,  decree, award or writ of any court,
          tribunal,  arbitrator,  governmental  agency or other person will have
          been  entered  that  prohibits  or  restricts  the  completion  of the
          subscription  or which,  in the  opinion  of the  Corporation,  acting
          reasonably, could prevent or restrict any party hereto from performing
          any of its obligations hereunder;

     (e)  the  purchase by the  Corporation  of 2,691,904  common  shares in the
          capital of the undersigned, at an aggregate subscription price of Can.
          $7,187,384, pursuant to a subscription agreement of even date; and

     (f)  the execution and delivery of a Strategic  Alliance  Agreement between
          the Corporation and the undersigned,  in form and substance acceptable
          to each of them.

7. The  undersigned  agrees to deliver to the  Corporation,  not later than 5:00
p.m.  (Pacific  daylight  time) at least two business  days prior to the Closing
Date,  a  certified  cheque or bank  draft  payable  to the  Corporation  or its
counsel,  Nida & Maloney, in trust, for the aggregate  subscription price of the
Purchased Securities subscribed for under this Subscription Agreement or payment
of the same amount in such other manner as is acceptable to the Corporation.

8.  This   subscription   may  be  accepted  or  rejected  by  the  Corporation.
Confirmation  of acceptance or rejection of a subscription  will be forwarded to
the undersigned  promptly after the acceptance or rejection of the subscription.
If this  subscription is rejected,  the undersigned  understands that, if it has
delivered a certified  cheque or bank draft  representing  the purchase price of
the  Purchased  Securities  subscribed  for,  such  cheque or bank draft will be
promptly returned to it without interest.

9. The undersigned  agrees to indemnify and hold harmless the  Corporation,  and
its directors, officers, employees, agents, advisors and shareholders,  from and
against  any and all loss,  liability,  claim,  damage  and  expense  whatsoever
including,  but not limited to, any and all fees, costs and expenses  whatsoever
reasonably  incurred  in  investigating,  preparing  or  defending  against  any
litigation,  administrative  proceeding or investigation commenced or threatened
or any claim  whatsoever  arising  out of or based  upon any  representation  or
warranty of the undersigned contained herein or in any document furnished by the
undersigned  to the  Corporation  in  connection  herewith  being  untrue in any
material  respect or any breach or failure by the undersigned to comply with any
covenant  or  agreement  made  by the  undersigned  herein  or in  any  document
furnished by the undersigned to the Corporation in connection herewith.

10. The Corporation  agrees to indemnify and hold harmless the undersigned,  and
its directors, officers, employees, agents, advisors and shareholders,  from and
against  any and all loss,  liability,  claim,  damage  and  expense  whatsoever
including,  but not limited to, any and all fees, costs and expenses  whatsoever
reasonably  incurred  in  investigating,  preparing  or  defending  against  any
litigation,  administrative  proceeding or investigation commenced or threatened
or any claim  whatsoever  arising  out of or based  upon any  representation  or
warranty of the Corporation contained herein or in any document furnished by the
Corporation  to the  undersigned  in  connection  herewith  being  untrue in any
material  respect or any breach or failure by the Corporation to comply with any
covenant  or  agreement  made  by the  Corporation  herein  or in  any  document
furnished by the Corporation to the undersigned in connection herewith.

11. Before Closing Time, no party hereto will make any public statement or issue
any press release concerning the transactions contemplated herein, except as may
be necessary, in the opinion of counsel to the party making such disclosure,  to
comply with the requirements of any applicable law, order,  rule,  regulation or
published  policy of any  regulatory  authority  having  jurisdiction.  Upon any
public statement or release being so required,  the party making such disclosure
will  consult  with the other party prior to making any  statement  or issuing a
press  release  and  the  parties  will  use  all  reasonable  efforts,   acting
expeditiously  and in good  faith,  to agree upon a text for such  statement  or
release which is satisfactory to each of them. If the parties fail to agree upon
such text, the party making the disclosure will make only such public  statement
or release as its counsel advises in writing is legally required to be made.

12. The covenants, representations and warranties contained herein shall survive
the  closing  of  the  transactions  contemplated  hereby,  notwithstanding  any
investigation  at any time made,  or any  evidence  as to the truth or  accuracy
thereof at any time accepted, by or on behalf of the other party.

13. The Corporation shall be entitled to rely on delivery of a facsimile copy of
this  Agreement,  and acceptance by the Corporation of such facsimile copy shall
be  legally  effective  to  create a valid and  binding  agreement  between  the
undersigned and the Corporation in accordance with the terms hereof.

14. This Subscription Agreement shall be governed by and construed in accordance
with the laws of the State of  California  and the  federal  laws of the  United
States applicable  therein.  This Subscription  Agreement is not transferable or
assignable by either of the parties hereto. Time shall be of the essence hereof.




          DATED at the City of  Vancouver,  in the Province of British  Columbia
          this ______ day of June, 1998.


XILLIX TECHNOLOGIES CORP.                         ______________________________
(Name of Subscriber - please print)               Address:

By:/S/
   ------------------------------
   Authorized Signature

_____________________________________             ______________________________
(Official Capacity or Title,- please print)       (Telephone Number)
                    





<PAGE>



Registration Instructions:                                Delivery Instructions:

Register the Purchased Securities               Deliver the Purchased Securities
as set forth below:                             as set forth below:


Name                                            Name


Account reference, if applicable                Account reference, if applicable


Address                                         Contact Name


                                                Telephone Number



                                   ACCEPTANCE

                  Miravant  Medical   Technologies   hereby  accepts  the  above
subscription  and agrees to be bound by all of the covenants  and  agreements on
its part set forth above as of this _________ day of June, 1998.

                                        MIRAVANT MEDICAL TECHNOLOGIES


                                        Per:/S/
                                            ------------------------------


                                        Per:/S/
                                            ------------------------------







                                   SCHEDULE A

                              FORM OF LEGAL OPINION





                                   SCHEDULE B

                             PLANS AND ARRANGEMENTS




 
                            SUBSCRIPTION AGREEMENT

TO:               XILLIX TECHNOLOGIES CORP. (the "Corporation")

1. The  undersigned  hereby  irrevocably  subscribes for and agrees to purchase,
subject to the terms and conditions of this  Subscription  Agreement,  2,691,904
common shares in the capital of the Corporation (the "Purchased Securities") for
an aggregate consideration of $7,187,384 (Canadian), representing a subscription
price of $2.67 (Canadian) per Purchased Security.

2. The  undersigned  acknowledges  that the issuance  and sale of the  Purchased
Securities  is  subject to the  approval  of The  Toronto  Stock  Exchange  (the
"Exchange"). The undersigned further acknowledges that, pursuant to the terms of
a financial  advisory  agreement dated September 4, 1997 between the Corporation
and 1991 Capital West Partners  ("Capital  West"),  as amended,  the Corporation
will pay to  Capital  West an  advisory  fee in the  amount  of 5% of the  gross
proceeds received by it from the issue and sale of the Purchased Securities.

3.  By  executing  this  Subscription  Agreement,  the  undersigned  represents,
warrants and covenants to the Corporation (and acknowledges that the Corporation
and its counsel are relying thereon) that:

     (a)  the  issue  and  sale  of  the  Purchased  Securities  to  it  or,  if
          applicable,  to  any  purchaser  on  whose  behalf  it is  contracting
          hereunder,  is  being  made  in  reliance  upon  exemptions  from  the
          requirements as to the involvement of a registered  dealer, the filing
          of a prospectus and the delivery of an offering  memorandum as set out
          in securities  legislation in British Columbia relating to the sale of
          the Purchased Securities;

     (b)  the   Purchased   Securities   will  be  subject  to  certain   resale
          restrictions under applicable securities laws and that the undersigned
          agrees  to  comply  with  such  restrictions.   The  undersigned  also
          acknowledges  that it has been  independently  advised with respect to
          applicable resale  restrictions,  that no representation has been made
          to it by or on behalf of the Corporation with respect thereto and that
          it is solely responsible for complying with such restrictions (and the
          Corporation  is  not in  any  manner  responsible  for  ensuring  such
          compliance);

     (c)  it is aware of the  characteristics of the Purchased  Securities,  the
          risks  relating to an investment  therein and of the fact that it will
          not be able to resell the  Purchased  Securities  except in accordance
          with limited  exemptions under applicable  securities  legislation and
          regulatory policy;

     (d)  it has not received,  nor has it requested,  nor does it have any need
          to receive, any offering memorandum, or any other document (other than
          financial  statements,  interim  financial  statements  or  any  other
          document,  other than an offering memorandum,  the content of which is
          prescribed  by statute or  regulation)  describing  the  business  and
          affairs of the  Corporation  which has been  prepared for delivery to,
          and review by, prospective  purchasers in order to assist it in making
          an investment  decision in respect of the Purchased  Securities and it
          is not aware of any  advertisement  in printed  media of  general  and
          regular  paid  circulation,  radio or  television  with respect to the
          distribution of the Purchased Securities;

     (e)  it is a Delaware  corporation  whose principal place of business is in
          California, and at which this investment decision was made;

     (f)  it is  purchasing  the  Purchased  Securities as principal for its own
          account,  not for the benefit of any other person, and not with a view
          to the resale or distribution of the Purchased Securities;

     (g)  it has an  aggregate  acquisition  cost of  purchasing  the  Purchased
          Securities of not less than $97,000;

     (h)  it has  not  been  formed  solely  or  primarily  for the  purpose  of
          purchasing the Purchased  Securities  pursuant to exemptions  from the
          prospectus and/or registration  requirements of applicable  securities
          legislation;

     (i)  it will not  resell or  otherwise  transfer  or  dispose of any of the
          Purchased  Securities  except in accordance with the provisions of all
          applicable securities laws;

     (j)  it has been  afforded  with  full  access to all  relevant  financial,
          technical,  operational  and  corporate  information  relating  to the
          Corporation  and  the  Purchased  Securities,  has  been  afforded  an
          opportunity  to ask  such  questions  of the  Corporation's  officers,
          employees,  agents,  accountants  and  representatives  concerning the
          foregoing and all other relevant matters as it has deemed necessary or
          desirable, has been given all such information that has been requested
          in order to assess  and  evaluate  the  Purchased  Securities  and the
          merits and the risks of the transactions  contemplated herein, and, as
          a  result,  has  acquired   sufficient   information   concerning  the
          Corporation  to make  an  informed  and  knowledgeable  decision  with
          respect to the purchase of the Purchased Securities;

     (k)  this  Subscription  Agreement  has been duly and  validly  authorized,
          executed and delivered by and constitutes a legal, valid,  binding and
          enforceable obligation of the undersigned;

     (l)  it has such knowledge and experience in financial and business affairs
          as to be capable of evaluating  the merits and risks of its investment
          in the Purchased  Securities  and is able to bear the economic risk of
          loss of its investment;

     (m)  if required by applicable securities  legislation,  policy or order or
          securities  commission,  stock exchange or other regulatory authority,
          the undersigned will execute,  deliver,  file and otherwise assist the
          Corporation  in filing,  such reports,  undertakings,  forms and other
          documents  with  respect  to the  issue  of the  Purchased  Securities
          (including,  without  limitation,  the  undertaking  required  by  the
          Exchange in the form attached as Schedule A hereto) as may be required
          by any  securities  commission,  stock  exchange  or other  regulatory
          authority;

     (n)  the Purchased Securities are not being purchased by the undersigned as
          a result of any material  information  concerning the Corporation that
          has not been  publicly  disclosed  and the  undersigned's  decision to
          tender this offer and acquire the  Purchased  Securities  has not been
          made as a result of any verbal or written representation as to fact or
          otherwise made by or on behalf of the Corporation, Capital West or any
          other person and is based  entirely upon  currently  available  public
          information concerning the Corporation;

     (o)  it understands  that the Purchased  Securities  have not been and will
          not  be  registered  under  the  U.S.  Securities  Act  or  any  state
          securities law, and that the sale contemplated hereby is being made in
          reliance on Rule 506 of  Regulation  D under the U.S.  Securities  Act
          ("Regulation D");

     (p)  it is an "accredited investor" as defined in Rule 501(a) of Regulation
          D;

     (q)  if it decides  to offer,  sell or  otherwise  transfer  the  Purchased
          Securities,   such  securities  may  be  offered,  sold  or  otherwise
          transferred  only (i) to the  Corporation,  (ii)  outside  the  United
          States  in  accordance  with Rule 904 of  Regulation  S under the U.S.
          Securities  Act, or (iii) inside the United States in accordance  with
          (A) Rule 144A under the U.S. Securities Act to a person who the seller
          reasonably believes is a Qualified  Institutional Buyer (as defined in
          Rule 144A) that is  purchasing  for its own account or for the account
          of a  Qualified  Institutional  Buyer to whom notice is given that the
          offer,  sale or transfer  is being made in reliance on Rule 144A,  (B)
          the exemption from registration under the U.S. Securities Act provided
          by Rule 144 thereunder,  if applicable,  or (C) with the prior written
          consent of the Corporation,  another exemption from registration under
          the U.S. Securities Act.

     (r)  all certificates representing the Purchased Securities, as well as all
          certificates  issued  in  exchange  for  or  in  substitution  of  the
          foregoing securities, will bear a legend to the following effect:

               "THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER
               THE UNITED STATES  SECURITIES  ACT OF 1933, AS AMENDED (THE "U.S.
               SECURITIES   ACT"),   THE  HOLDER  HEREOF,   BY  PURCHASING  SUCH
               SECURITIES,  AGREES FOR THE BENEFIT OF XILLIX  TECHNOLOGIES CORP.
               THAT  SUCH   SECURITIES   MAY  BE  OFFERED,   SOLD  OR  OTHERWISE
               TRANSFERRED  ONLY (A) TO XILLIX  TECHNOLOGIES  CORP., (B) OUTSIDE
               THE UNITED  STATES IN  ACCORDANCE  WITH RULE 904 OF  REGULATION S
               UNDER THE U.S. SECURITIES ACT, OR (C) INSIDE THE UNITED STATES IN
               ACCORDANCE WITH (1) RULE 144A UNDER THE U.S.  SECURITIES ACT TO A
               PERSON  WHO  THE  SELLER  REASONABLY   BELIEVES  IS  A  QUALIFIED
               INSTITUTIONAL  BUYER (AS DEFINED IN RULE 144A) THAT IS PURCHASING
               FOR  HIS  OWN   ACCOUNT  OR  FOR  THE   ACCOUNT  OF  A  QUALIFIED
               INSTITUTIONAL  BUYER TO WHOM NOTICE IS GIVEN THAT THE OFFER, SALE
               OR  TRANSFER  IS BEING MADE IN  RELIANCE  ON RULE  144A,  (2) THE
               EXEMPTION  FROM  REGISTRATION  UNDER  THE  U.S.   SECURITIES  ACT
               PROVIDED BY RULE 144  THEREUNDER,  IF AVAILABLE,  OR (3) WITH THE
               PRIOR  WRITTEN  CONSENT  OF XILLIX  TECHNOLOGIES  CORP.,  ANOTHER
               EXEMPTION  FROM  REGISTRATION  UNDER  THE  U.S.  SECURITIES  ACT.
               DELIVERY OF THIS  CERTIFICATE MAY NOT CONSTITUTE  "GOOD DELIVERY"
               IN SETTLEMENT OF TRANSACTIONS ON STOCK EXCHANGES IN CANADA."

          provided  that,  if any such  securities  are being sold  outside  the
          United States in accordance  with Rule 904 of Regulation S, the legend
          may  be  removed  by   providing   both  the   seller's  and  broker's
          representation  letters to CIBC Mellon Trust Company, as registrar and
          transfer  agent,  to the  effect  set  forth  in  Schedule  B to  this
          Subscription  Agreement,  or in such other form as CIBC  Mellon  Trust
          Company or the Corporation may from time to time prescribe;

     (s)  it understands and acknowledges that the Corporation may instruct CIBC
          Mellon  Trust  Company  not to record a transfer  without  first being
          notified by the Corporation that it is satisfied that such transfer is
          exempt from or not subject to registration  under the U.S.  Securities
          Act; and

     (t)  it  acknowledges  that,   pursuant  to  British  Columbia   Securities
          Commission  Blanket  Order  BOR#95/17,  an initial trade report in the
          prescribed  form in respect of the resale of the Purchased  Securities
          must be filed within 10 days of the initial  trade of such  securities
          and where the undersigned has filed such an initial trade report,  the
          undersigned  is not  required  to file a further  report in respect of
          additional  trades of Purchased  Securities  acquired on the same date
          and under the same exemption as the Purchased  Securities that are the
          subject of the initial trade report.

     The  undersigned  acknowledges  that  the  foregoing   representations  and
warranties  are made by it with the  intent  that  they  may be  relied  upon in
determining  the  undersigned's  eligibility  to subscribe  for and purchase the
Purchased  Securities  hereunder.   The  undersigned  further  agrees  that,  by
accepting the Purchased Securities on the Closing Date, it shall be representing
and warranting that the foregoing  representations and warranties are true as at
the  Closing  Date with the same force and effect as if they had been made by it
at the Closing Time.

4. The Corporation  represents,  warrants and covenants to the undersigned  (and
acknowledges that the undersigned is relying thereon) that:

     (a)  the Corporation and each of its subsidiaries is a valid and subsisting
          corporation,  duly  incorporated  or amalgamated  and in good standing
          under the laws of its jurisdiction of incorporation;

     (b)  the common shares of the Corporation are listed and posted for trading
          on the Exchange and, to the best of its knowledge,  the Corporation is
          not in default of any of the listing requirement of the Exchange;

     (c)  the  authorized   share  capital  of  the   Corporation   consists  of
          750,000,000  common shares,  of which, as of June 1, 1998,  28,491,525
          shares are issued and outstanding as fully paid and non-assessable;

     (d)  the  Corporation  is a  "reporting  issuer"  not in default  under the
          applicable  securities  laws of each of the  Provinces of Canada other
          than Quebec;

     (e)  no person,  firm or corporation holds any securities  convertible into
          shares of the Corporation or has any agreement, warrant, option, right
          or  privilege  being or capable of  becoming  an  agreement,  warrant,
          option or right for the  purchase,  subscription  or  issuance  of any
          unissued  securities  of the  Corporation,  except  pursuant  to  this
          Agreement  and,  as of June 1, 1998,  pursuant  to  options  which are
          exercisable  or  exchangable  into  an  aggregate  of  not  more  than
          3,510,000 common shares of the Corporation;

     (f)  upon their  issuance on the Closing  Date,  the Common  Shares will be
          validly  issued  and  outstanding  as fully  paid  and  non-assessable
          securities of the Corporation;

     (g)  on the Closing Date,  the Common  Shares will have been  conditionally
          approved for listing and posted for trading on the  Exchange,  subject
          to the  Corporation  fulfilling  all  requirements  of the Exchange in
          connection therewith;

     (h)  the Corporation and each of its  subsidiaries  has the corporate power
          and  capacity to own and lease its assets and to carry on its business
          as now conducted by it;

     (i)  the  Corporation  and  each  of its  subsidiaries  is  conducting  its
          business in material  compliance with all applicable  laws,  rules and
          regulations of each  jurisdiction  in which its business is carried on
          and is duly licensed,  registered or qualified in all jurisdictions in
          which it owns,  leases or operates its property or carries on business
          to enable  its  business  to be carried  on as now  conducted  and its
          property  and  assets to be owned,  leased and  operated  and all such
          licences,  registrations and  qualifications  are valid and subsisting
          and in good  standing,  except in respect of matters  which do not and
          will not  result  in any  material  adverse  change  to the  business,
          business  prospects  or  condition  (financial  or  otherwise)  of the
          Corporation and its subsidiaries, on a consolidated basis;

     (j)  the audited  financial  statements of the  Corporation  for its fiscal
          period  ended   December  31,  1997  (the   "Corporation's   Financial
          Statements")  present fairly the financial position and results of the
          operations  of the  Corporation  for the  periods  then  ended and the
          Corporation's  Financial  Statements  have been prepared in accordance
          with generally accepted accounting  principles applied on a consistent
          basis;

     (k)  except as publicly  disclosed,  since  December 31, 1997 there has not
          been  any  adverse  material  change  of any  kind  whatsoever  in the
          financial  position or  condition of the  Corporation,  or any damage,
          loss  or  other  change  of  any  kind  whatsoever  in   circumstances
          materially affecting the business or assets of the Corporation, or the
          right or capacity of the Corporation to carry on its business;

     (l)  there  has not  been  any  material  change  in the  capital  stock or
          long-term debt or in the assets, liabilities or obligations (absolute,
          accrued,  contingent  or  otherwise)  of  the  Corporation,   and  its
          subsidiaries,  on a consolidated  basis,  since December 31, 1997 that
          has not been publicly disclosed;

     (m)  there has not been any  material  change  in,  and there  have been no
          material  facts,  transactions,  events  or  occurrences  which  could
          materially   adversely  affect,  the  business,   business  prospects,
          condition (financial or otherwise) or results of the operations of the
          Corporation,  and its  subsidiaries,  on a consolidated  basis,  since
          December 31, 1997 that has not been publicly disclosed;

     (n)  except as has been  publicly  disclosed,  since  December 31, 1997 the
          Corporation and each of its  subsidiaries  has carried on its business
          in the ordinary course;

     (o)  to the best of its knowledge,  except as publicly disclosed, there are
          no actions,  suits,  judgments,  investigations  or proceedings of any
          kind  whatsoever  outstanding,  pending or threatened by or against or
          affecting the  Corporation or its  subsidiaries,  if any, at law or in
          equity or before or by any federal,  provincial,  state,  municipal or
          other governmental  department,  commission,  board, bureau or agency,
          domestic or foreign,  of any kind  whatsoever,  which will  materially
          adversely  affect the business,  operations or financial  condition of
          the Corporation, and its subsidiaries, on a consolidated basis, or any
          of its assets or properties,  or which materially adversely affects or
          may  materially  adversely  affect the  distribution  of the Purchased
          Securities  or any  action  taken or to be  taken  by the  Corporation
          pursuant to or in connection with this Subscription  Agreement and, to
          the best of its knowledge, there is no basis therefor;

     (p)  no securities commission or similar regulatory authority in Canada has
          issued any order preventing or suspending trading in any securities of
          the Corporation;

     (q)  the  Corporation  will,  prior to the Closing  Time,  fulfil all legal
          requirements  (including,  without  limitation,  compliance  with  all
          applicable  securities  laws) to be  fulfilled by the  Corporation  to
          enable  the  Purchased  Securities  to be  offered  for  sale  to  the
          undersigned as contemplated in this Subscription Agreement;

     (r)  to the best of its knowledge, the Corporation or, as applicable,  each
          of its subsidiaries, is not in default or breach of, and the execution
          and delivery of, and the  performance of and compliance with the terms
          of this Subscription  Agreement,  does not and will not conflict with,
          or result in any  breach of or the  acceleration  of any  indebtedness
          under, or constitute a default under, and does not and will not create
          a state of facts which,  after notice or lapse of time or both,  would
          result  in a breach of or  constitute  a  default  under,  any term or
          provision of the memorandum,  articles,  by-laws or resolutions of the
          Corporation (including its subsidiaries),  or any indenture, contract,
          agreement  (written  or oral),  instrument,  lease or other  document,
          including  without  limitation the contracts to which the  Corporation
          (including its  subsidiaries)  is a party or by which it is bound,  or
          any judgment, decree, order, statute, rule or regulation applicable to
          the Corporation (including its subsidiaries),  which default or breach
          might  reasonably  be  expected  to  materially  adversely  affect the
          business, operations, capital or condition (financial or otherwise) of
          the  Corporation   (including  its  subsidiaries)  or  its  assets  or
          properties;

     (s)  the  Corporation  has full corporate power and authority to enter into
          this  Subscription  Agreement and to perform its  obligations  set out
          herein  and this  Subscription  Agreement  has been  duly  authorized,
          executed and delivered by the  Corporation  and is a legal,  valid and
          binding  obligation  of  the  Corporation,   enforceable  against  the
          Corporation in accordance with its terms except that:

          (i)  the enforcement thereof may be limited by bankruptcy,  insolvency
               and other laws  affecting the  enforcement  of creditors'  rights
               generally;

          (ii) equitable  remedies  including,   without  limitation,   specific
               performance  and injunction may be granted only in the discretion
               of a court; and

          (iii)rights of indemnity,  contribution and waiver of contribution may
               be limited under applicable law;

     (t)  there  is  not,  in  the  constating   documents  or  by-laws  of  the
          Corporation or in any agreement,  mortgage, note, debenture, indenture
          or other  instrument or document to which the  Corporation is a party,
          any  restriction  upon or impediment to the  declaration or payment of
          dividends by the Corporation to the holders of its common shares.  The
          representations  and warranties of the  corporation  contained in this
          Subscription  Agreement  shall be true at the  Closing  Time as though
          they were made at the Closing Time;

     (u)  set out in  Schedule  D hereto  is a  complete  list of all  plans and
          arrangements  under which  options or other  rights to acquire  shares
          have been  granted by the  Corporation,  or under which  shares of the
          Corporation have been reserved for issuance, which, in each case, sets
          forth the number of shares  reserved for  issuance  under such plan or
          arrangement   and  the  number  of  options   and/or   similar  rights
          outstanding thereunder, in each case as of June 1, 1998;

     (v)  the Corporation  agrees to file a Form D with respect to the Purchased
          Securities  with the U.S.  Securities  and  Exchange  Commission  (the
          "SEC") as required under Regulation D and to provide a copy thereof to
          the  undersigned  within fifteen (15) days after the Closing Date. The
          Corporation  shall,  on or prior to the Closing Date, take such action
          as is  necessary  under all  applicable  Securities  Laws (as  defined
          below) to sell the  Purchased  Securities  to the  undersigned  in the
          manner contemplated in this Agreement,  and to provide evidence of any
          such  action so taken to the  undersigned  on or prior to the  Closing
          Date.  "Securities  Laws" shall mean the  securities  laws,  rules and
          regulations  of  Canada,  of the  United  States,  and  of any  state,
          province or governmental  or regulatory  authority of Canada or of the
          United States, including blue sky laws;

     (w)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided  that it continues to be a reporting  issuer in one or
          more Canadian jurisdictions and that the undersigned continues to hold
          any of the Purchased  Securities,  timely file all reports required to
          be filed with all applicable  securities regulatory  authorities,  and
          the Corporation shall not, during such period, terminate its status as
          an issuer required to file reports under any applicable Securities Law
          even if such Securities Law would permit such termination;

     (x)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided  that  the  undersigned  continues  to hold any of the
          Purchased  Securities  and  that  the  Corporation  continues  to be a
          reporting  issuer  in one or more  Canadian  jurisdictions,  send  the
          following  reports to the  undersigned:  (i) within three (3) business
          days after the filing with any securities regulatory authority, a copy
          of each  annual,  quarterly  or  other  periodic  report,  each  proxy
          statement  and each current  report;  and (ii) within one (1) business
          day  after  release,  a copy  of  each  press  release  issued  by the
          Corporation or any of its subsidiaries;

     (y)  the  Corporation  shall,  for a period of 18 months  after the Closing
          Date,  provided that the Corporation  continues to satisfy the listing
          requirements of such Exchange(s) and that the undersigned continues to
          hold  any of the  Purchased  Securities,  continue  the  uninterrupted
          listing and trading of its common shares on The Toronto Stock Exchange
          and on any other  securities  exchange on which any of its  securities
          may be or become  listed and traded,  and comply in all respects  with
          the  Corporation's  reporting,  filing and other obligations under the
          By-laws  or  rules  of the  Exchange  and any  such  other  securities
          exchange; and

     (z)  the  Corporation  will use the  proceeds of the sale of the  Purchased
          Securities   for  working   capital  and/or  such  other  purposes  as
          management  or  the  Board  of  Directors  of  the  Corporation  shall
          determine.

5. The sale of the  Purchased  Securities  will be  completed  at the offices of
Fraser & Beatty, the Corporation's  counsel,  in Vancouver,  British Columbia at
10:00 a.m.  (Vancouver  time),  or such other  time as the  Corporation  and the
undersigned  may agree upon in writing (the "Closing  Time") on June 2, 1998, or
such other date as the Corporation and the undersigned may agree upon in writing
(the "Closing Date").  The certificate for the Purchased  Securities  subscribed
for by the  undersigned  hereunder  will,  on the  Closing  Date,  be issued and
registered in the name set out in the Registration  Instructions  below and will
promptly  thereafter be delivered in accordance  with the Delivery  Instructions
below.

6. The obligation of the undersigned to complete the  subscription  contemplated
hereby will be subject to and  conditional  on the  fulfilment  on or before the
Closing Time of the following conditions, compliance with which may be waived in
whole or in part by the  undersigned,  at any time, in its  discretion  and upon
such terms as it may consider appropriate:

     (a)  the representations and warranties of the Corporation contained herein
          will  be  true  at  and  as  of  the  Closing   Time  as  though  such
          representations and warranties were made again at and as of such time;

     (b)  the  Corporation  will have performed and complied with all covenants,
          agreements and conditions  required hereby to be performed or complied
          with by the Corporation prior to Closing Time;

     (c)  the  Exchange  will  have  accepted  notice  of  the  issuance  of the
          Purchased  Securities as  contemplated by the terms of this Agreement,
          subject only to the filing of all required  documents  and the payment
          of the required fees within the times stipulated by the Exchange;

     (d)  no order,  judgment,  injunction,  decree, award or writ of any court,
          tribunal,  arbitrator,  governmental  agency or other person will have
          been  entered  that  prohibits  or  restricts  the  completion  of the
          subscription  or which,  in the  opinion  of the  undersigned,  acting
          reasonably, could prevent or restrict any party hereto from performing
          any of its obligations hereunder;

     (e)  the undersigned will have received a favourable written opinion of the
          Corporation's  counsel,  dated the Closing Date,  substantially in the
          form attached hereto as Schedule C;

     (f)  the purchase by the Corporation of 58,909 common shares in the capital
          of  the  undersigned,  at an  aggregate  subscription  price  of  U.S.
          $2,000,000, pursuant to a subscription agreement of even date; and

     (g)  the execution and delivery of a Strategic  Alliance  Agreement between
          the Corporation and the undersigned,  in form and substance acceptable
          to each of them.

7. The obligation of the Corporation to complete the  transactions  contemplated
hereby will be subject to and  conditional  on the  fulfillment on or before the
Closing Time of the following conditions, compliance with which may be waived in
whole or in part by the  Corporation,  at any time, in its  discretion  and upon
such terms as it may consider appropriate:

     (a)  the representations and warranties of the undersigned contained herein
          will  be  true  at  and  as  of  the  Closing   Time  as  though  such
          representations and warranties were made again at and as of such time;

     (b)  the  undersigned  will have performed and complied with all covenants,
          agreements and conditions  required hereby to be performed or compiled
          with by the undersigned prior to the Closing Time;

     (c)  the  Exchange  will  have  accepted  notice  of  the  issuance  of the
          Purchased  Securities as  contemplated by the terms of this Agreement,
          subject only to the filing of all required  documents  and the payment
          of the required fees within the times stipulated by the Exchange;

     (d)  no order,  judgment,  injunction,  decree, award or writ of any court,
          tribunal,  arbitrator,  governmental  agency or other person will have
          been  entered  that  prohibits  or  restricts  the  completion  of the
          subscription  or which,  in the  opinion  of the  Corporation,  acting
          reasonably, could prevent or restrict any party hereto from performing
          any of its obligations hereunder;

     (e)  the purchase by the Corporation of 58,909 common shares in the capital
          of  the  undersigned,  at an  aggregate  subscription  price  of  U.S.
          $2,000,000, pursuant to a subscription agreement of even date; and

     (f)  the execution and delivery of a Strategic  Alliance  Agreement between
          the Corporation and the undersigned,  in form and substance acceptable
          to each of them.

8. The  undersigned  agrees to deliver to the  Corporation,  not later than 5:00
p.m. (Vancouver time) at least two business days prior to the Closing Date:

     (a)  two  manually  signed and  completed  copies of the Private  Placement
          Questionnaire  and  Undertaking  attached as Schedule A and such other
          documents  as may be  requested  as  contemplated  by  paragraph  3(m)
          hereof; and

     (b)  a certified  cheque or bank draft  payable to the  Corporation  or its
          counsel,  Fraser & Beatty,  in trust,  for the aggregate  subscription
          price  of  the  Purchased   Securities   subscribed   for  under  this
          Subscription  Agreement  or payment  of the same  amount in such other
          manner as is acceptable to the Corporation.

9.  This   subscription   may  be  accepted  or  rejected  by  the  Corporation.
Confirmation  of acceptance or rejection of a subscription  will be forwarded to
the undersigned  promptly after the acceptance or rejection of the subscription.
If this  subscription is rejected,  the undersigned  understands that, if it has
delivered a certified  cheque or bank draft  representing  the purchase price of
the  Purchased  Securities  subscribed  for,  such  cheque or bank draft will be
promptly returned to it without interest.

10. The undersigned  agrees to indemnify and hold harmless the Corporation,  and
its directors, officers, employees, agents, advisors and shareholders,  from and
against  any and all loss,  liability,  claim,  damage  and  expense  whatsoever
including,  but not limited to, any and all fees, costs and expenses  whatsoever
reasonably  incurred  in  investigating,  preparing  or  defending  against  any
litigation,  administrative  proceeding or investigation commenced or threatened
or any claim  whatsoever  arising  out of or based  upon any  representation  or
warranty of the undersigned contained herein or in any document furnished by the
undersigned  to the  Corporation  in  connection  herewith  being  untrue in any
material  respect or any breach or failure by the undersigned to comply with any
covenant  or  agreement  made  by the  undersigned  herein  or in  any  document
furnished by the undersigned to the Corporation in connection herewith.

11. The Corporation  agrees to indemnify and hold harmless the undersigned,  and
its directors, officers, employees, agents, advisors and shareholders,  from and
against  any and all loss,  liability,  claim,  damage  and  expense  whatsoever
including,  but not limited to, any and all fees, costs and expenses  whatsoever
reasonably  incurred  in  investigating,  preparing  or  defending  against  any
litigation,  administrative  proceeding or investigation commenced or threatened
or any claim  whatsoever  arising  out of or based  upon any  representation  or
warranty of the Corporation contained herein or in any document furnished by the
Corporation  to the  undersigned  in  connection  herewith  being  untrue in any
material  respect or any breach or failure by the Corporation to comply with any
covenant  or  agreement  made  by the  Corporation  herein  or in  any  document
furnished by the Corporation to the undersigned in connection herewith.

12. Before Closing Time, no party hereto will make any public statement or issue
any press release concerning the transactions contemplated herein, except as may
be necessary, in the opinion of counsel to the party making such disclosure,  to
comply with the requirements of any applicable law, order,  rule,  regulation or
published  policy of any  regulatory  authority  having  jurisdiction.  Upon any
public statement or release being so required,  the party making such disclosure
will  consult  with the other party prior to making any  statement  or issuing a
press  release  and  the  parties  will  use  all  reasonable  efforts,   acting
expeditiously  and in good  faith,  to agree upon a text for such  statement  or
release which is satisfactory to each of them. If the parties fail to agree upon
such text, the party making the disclosure will make only such public  statement
or release as its counsel advises in writing is legally required to be made.

13. The covenants, representations and warranties contained herein shall survive
the  closing  of  the  transactions  contemplated  hereby,  notwithstanding  any
investigation  at any time made,  or any  evidence  as to the truth or  accuracy
thereof at any time accepted, by or on behalf of the other party.

14. The Corporation shall be entitled to rely on delivery of a facsimile copy of
this  Agreement,  and acceptance by the Corporation of such facsimile copy shall
be  legally  effective  to  create a valid and  binding  agreement  between  the
undersigned and the Corporation in accordance with the terms hereof.

15. This Subscription Agreement shall be governed by and construed in accordance
with  the laws of the  Province  of  British  Columbia  and the  laws of  Canada
applicable  therein.   This  Subscription   Agreement  is  not  transferable  or
assignable by either of the parties hereto. Time shall be of the essence hereof.




          DATED at the City of Santa  Barbara,  in the State of California  this
          ______ day of June, 1998.


MIRAVANT MEDICAL TECHNOLOGIES                ___________________________________
(Name of Subscriber - please print)          Address:

By:/S/
   ------------------------------
                 Authorized Signature

_____________________________________        ___________________________________
(Official Capacity or Title,- please print)  (Telephone Number)
                    





<PAGE>



Registration Instructions:                   Delivery Instructions:

Register the Purchased Securities            Deliver the Purchased Securities 
as set forth below:                          as set forth below:


Name                                         Name


Account reference, if applicable             Account reference, if applicable


Address                                      Contact Name


                                             Telephone Number



                                   ACCEPTANCE

          Xillix  Technologies  Corp. hereby accepts the above  subscription and
     agrees to be bound by all of the covenants  and  agreements on its part set
     forth above as of this  _________ day of June,  1998.  XILLIX  TECHNOLOGIES
     CORP.


                                             Per:/S/
                                                 ------------------------------


                                             Per:/S/
                                                 ------------------------------



<PAGE>



                                   SCHEDULE A

                        TSE QUESTIONNAIRE AND UNDERTAKING



NOTE:    The attached must be completed in duplicate.






                           THE TORONTO STOCK EXCHANGE

                 PRIVATE PLACEMENT QUESTIONNAIRE AND UNDERTAKING

                                  QUESTIONNAIRE

1.  DESCRIPTION  OF  TRANSACTION 

     (a)  Name of Issuer of the Securities: Xillix Technologies Corp.

     (b)  Number  and class of  Securities  to be  Purchased:  2,691,904  Common
     shares.

     (c)  Purchase Price: $2.67 per Share.

2. DETAILS OF PURCHASER

     (a)  Name of Purchaser: Miravant Medical Technologies

     (b)  Address: 7408 Hollister Avenue, Santa Barbara, CA, 93117
                           

     (c)  Names and  addresses of persons  having a greater than 10%  beneficial
          interest in the purchaser:



3. RELATIONSHIP TO ISSUER

     (a)  Is the  purchaser,  or any person named in response to 2(c) above,  an
          insider of the issuer for the purposes of the Ontario  Securities  Act
          (before  giving  effect to this private  placement)?  If so, state the
          capacity in which the  purchaser  (or person named in response to 2(c)
          qualifies an insider:




     (b)  If the  answer  to (a) is  "no",  are the  purchaser  and  the  issuer
          controlled by the same person or company? If so, give details:




4. DEALINGS OF PURCHASER IN SECURITIES OF THE ISSUER

          Give details of all trading by the  purchaser,  as  principal,  in the
     securities  of the  issuer  (other  than  debt  securities  which  are  not
     convertible into equity securities),  directly or indirectly, within the 60
     days preceding the date hereof:







<PAGE>


                                   UNDERTAKING


To: The Toronto Stock Exchange

     The  undersigned  has subscribed for and agreed to purchase,  as principal,
the securities  described in item 1 of this Private Placement  Questionnaire and
Undertaking.

     The undersigned  undertakes not to sell or otherwise  dispose of any of the
said securities so purchased or any securities derived therefrom for a period of
six months  from the date of the closing of the  transaction  herein or for such
period as is prescribed by applicable securities  legislation,  whichever is the
longer,  without the prior consent of The Toronto  Stock  Exchange and any other
regulatory body having jurisdiction.

          Dated at the City of Santa Barbara,  in the State of California,  this
     ______ day of June, 1998.


                                             MIRAVANT MEDICAL TECHNOLOGIES
                                             (Name of Purchaser - please print)
          

                                             By:/S/
                                                ------------------------------
                                                Authorized Signature


                                             ___________________________________
                                             (Official  Capacity  or  Title,  if
                                             applicable - please  print) 
                                                                             


                                             ___________________________________
                                             (Please print  name of   individual
                                             whose signature  appears  above  if
                                             different  than the  name of    the
                                             purchaser  printed  above)
                                                                              
                                                              
                                                             
                                                                               



<PAGE>


                                   SCHEDULE B

                 REPRESENTATION LETTERS OF THE SELLER AND BROKER







                                  See attached





                       REPRESENTATION LETTER OF THE SELLER





                                                 Date: _________________________

CIBC MELLON TRUST COMPANY,
as registrar and transfer agent
for the Common Shares of Xillix Technologies Inc.
P.O. Box 1900
Mall Level
1177 West Hastings St.
Vancouver, BC  V6C 3K9


Dear Sir/Madam:

                              Sale of Common Shares

     The undersigned (the "Seller") proposes to sell  _______________  shares of
common stock,  represented by certificate  number __________ (the "Shares"),  of
Xillix  Technologies Inc. (the "Company") through  _____________________________
[Name of Broker]  pursuant to Rule 904 of  Regulation S under the United  States
Securities Act of 1933, as amended. In order to induce you to render your advice
to the transfer agent of the Company, enabling such transfer agent to remove the
restrictive  legend and any stop transfer order from the Shares, the undersigned
hereby represents and warrants to you as follows:

     (1)  no offer to sell the  Shares  will be made to a person  in the  United
          States;

     (2)  the undersigned  either:  (a) is not an "affiliate" (as defined below)
          of the Company, or (b) is an affiliate of the Company solely by virtue
          of holding a position as a director or officer of the Company;

     (3)  the  sale of the  Shares  will  be  executed  in,  on or  through  the
          facilities  of The  Toronto  Stock  Exchange  in  accordance  with the
          procedures  of such  exchange,  and  neither the  undersigned  nor any
          person acting on the undersigned's behalf knows that the sale has been
          prearranged with a buyer in the United States;

     (4)  no "directed selling efforts" will be made in the United States by the
          undersigned, any affiliate of the undersigned, or any person acting on
          behalf of the undersigned;

     (5)  the  undersigned  is not a person who  participates,  pursuant  to any
          contractual arrangement, in the distribution of these securities;

     (6)  that in the event the  undersigned  is a  director  or  officer of the
          Company,  the  undersigned  represents  that, in  connection  with the
          proposed  sale  of  Shares,  no  selling  concession,   fee  or  other
          remuneration  will be paid in connection with such offer or sale other
          than the usual and customary broker's commission that will be received
          by a person executing such transaction as agent; and

     (7)  the transactions described herein are not a part of or incident to any
          hedging transaction.

     For  purposes  of these  representations,  "affiliate"  means a person that
directly,  or indirectly  through one or more  intermediaries,  controls,  or is
controlled by, or is under common control with, the Company.  "Directed  selling
efforts"  means any  activity  undertaken  for the  purposes  of, or that  could
reasonably  be  expected to have the effect of,  conditioning  the market in the
United  States for the Shares.  This would  include,  but not be limited to, the
solicitation of offers to purchase the Shares from persons in the United States.
"United  States"  means  the  United  States  of  America,  its  territories  or
possessions, any State of the United States, and the District of Columbia.

     The  undersigned   understands   that  the  Company  is  relying  upon  the
representations  contained  in this letter and agrees that legal  counsel to the
Company  shall be  entitled  to rely upon the  representations,  warranties  and
covenants contained in this letter to the same extent as if this letter had been
addressed to them.

                                                     Yours very truly,



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


<PAGE>


                       REPRESENTATION LETTER OF THE BROKER

                             [Letterhead Of Broker]



                                                      Date: ____________________

CIBC MELLON TRUST COMPANY,
as registrar and transfer agent
for the Common Shares of Xillix Technologies Inc.
P.O. Box 1900
Mall Level
1177 West Hastings St.
Vancouver, BC  V6C 3K9


Dear Sir/Madam:

                     Sale of Shares Pursuant to SEC Rule 904

     We   have   read   the    representation    letter    of   our    customer,
_________________________ (the "Seller") dated _______________________, pursuant
to which the  Seller  has  requested  that we sell,  for the  Seller's  account,
_____________  shares of common stock represented by certificate  number _______
(the  "Shares") of Xillix  Technologies  Inc. (the  "Company").  We will execute
sales of the Shares pursuant to Rule 904 of Regulation S under the United States
Securities Act of 1933, as amended, on behalf of the Seller. In that connection,
we hereby represent to you as follows:

     (1)  no offer to sell the  Shares  will be made to a person  in the  United
          States;

     (2)  the  sale of the  Shares  will  be  executed  in,  on or  through  the
          facilities  of The  Toronto  Stock  Exchange,  and, to the best of our
          knowledge,  the  sale  will  not be  pre-arranged  with a buyer in the
          United States;

     (3)  no "directed selling efforts" will be made in the United States by the
          undersigned, any affiliate of the undersigned, or any person acting on
          behalf of the undersigned;

     (4)  we will do no more than execute the order or orders to sell the Shares
          as agent for the  Seller  and will  receive no more than the usual and
          customary  broker's  commission  that  would be  received  by a person
          executing such transaction as agent; and

     (5)  to the best of our knowledge the transactions described herein are not
          a part of or incident to any hedging transaction.

     For  purposes  of these  representations,  "affiliate"  means a person that
directly,  or indirectly  through one or more  intermediaries,  controls,  or is
controlled  by, or is under common  control  with,  the  undersigned.  "Directed
selling efforts" means any activity undertaken for the purpose of, or that could
reasonably  be  expected to have the effect of,  conditioning  the market in the
United  States for the Shares.  This would  include,  but not be limited to, the
solicitation of offers to purchase the Shares from persons in the United States.
"United  States"  means  the  United  States  of  America,  its  territories  or
possessions, any State of the United States, and the District of Columbia.

     Legal   counsel  to  the  Company  shall  be  entitled  to  rely  upon  the
representations,  warranties and covenants  contained in this letter to the same
extent as if this letter had been addressed to them.

     If you have any questions regarding this transaction,  please telephone the
undersigned at (_____)______-__________.

                                             Sincerely,

                                             ___________________________________
                                             [Name of Broker]
                                                              
                                             By:________________________________

                                             Title: ____________________________
                    


<PAGE>


                                   SCHEDULE C

                              FORM OF LEGAL OPINION





                                                                    June 2, 1998


Xillix Technologies Corp.
300-13775 Commerce Parkway
Richmond, British Columbia
V6V 2V4

- -and-

Miravant Medical Technologies
7408 Hollister Avenue
Santa Barbara, CA
93117


Dear Sirs/Mesdames:

                            Xillix Technologies Corp.
          - Issuance of Common Shares to Miravant Medical Technologies

     We have acted as counsel to Xillix  Technologies  Corp.  (the "Company") in
connection  with the  issuance by the Company of  2,691,904  common  shares (the
"Purchased  Securities")  to Miravant  Medical  Technologies  (the  "Purchaser")
pursuant to a subscription agreement between the Company and the Purchaser dated
as of the 2nd day of June, 1998 (the "Xillix Subscription Agreement").

     We   have reviewed:

     (a)  an executed copy of the Xillix Subscription Agreement;

     (b)  an  executed  copy of the  Strategic  Alliance  Agreement  between the
          Company  and the  Purchaser  dated as of June 2, 1998  relating to the
          development  and  commercialization  of the  Purchaser's  photodynamic
          therapy technology with the Company's  fluorescence imaging technology
          (the "Strategic Alliance Agreement");

     (c)  an executed copy of the subscription  agreement  between the Purchaser
          and the Company relating to the issue and sale of 58,909 common shares
          of the Purchaser (the "Miravant Subscription Agreement");

     (d)  a certificate  of the President  and Chief  Executive  Officer and the
          Corporate  Secretary  of the  Company  dated June 2, 1998  relating to
          certain factual matters;

     (e)  a certificate of the Corporate  Secretary of the Company dated June 2,
          1998 with respect to the  Memorandum  and Articles of the Company and,
          among other things,  the  resolutions  of the directors of the Company
          approving  the  issue  and sale of the  Purchased  Securities  and the
          entering  into of the  Xillix  Subscription  Agreement,  the  Miravant
          Subscription   Agreement   and  the   Strategic   Alliance   Agreement
          (collectively, the "Agreements");

     (f)  a certificate of CIBC Mellon Trust Company, the registrar and transfer
          agent for the common  shares of the Company  (the  "Transfer  Agent"),
          dated June 2, 1998 confirming the number of outstanding  common shares
          of the Company; and

     (g)  correspondence  from  The  Toronto  Stock  Exchange  (the  "Exchange")
          relating to the listing of the Purchased Securities.

     We  have  examined  such  statutes  and  regulations,   corporate  records,
certificates  and other  documents and have considered such questions of law and
have  made such  other  examinations,  searches  and  investigations  as we have
considered  relevant and necessary as a basis for the opinions  hereinafter  set
forth.  In such  examination,  we have assumed the genuineness of all signatures
and the  authenticity  of all  documents  submitted to us as  originals  and the
conformity to authentic originals of all documents submitted to us as certified,
notarial or true copies or reproductions. We have also assumed, for the purposes
of the opinions  expressed herein,  that the Xillix  Subscription  Agreement has
been duly  authorized,  executed and  delivered by the  Purchaser and is binding
upon and enforceable against the Purchaser.

     As  to  various   questions  of  fact  material  to  the  opinions  herein,
information  with respect to which is in the possession of the Company,  we have
relied  upon the  certificates  referred to in  subparagraphs  (d) and (e) above
(collectively, the "Company Certificates"),  copies of which have been delivered
to you today. We have also relied on certain other  certificates with respect to
certain factual matters.

     For the purposes of the opinions expressed below, we have assumed:

     (a)  the accuracy of the  representations,  warranties and acknowledgements
          of the Purchaser set out in each of the Agreements; and

     (b)  that there has been no advertisement of the Purchased  Securities,  or
          of the offering or sale  thereof,  whether in printed media of general
          and regular paid circulation, on radio or television or otherwise, and
          that no offering memorandum has been delivered to the Purchaser.

     In  expressing  the opinion set forth in paragraph 1, we have relied solely
upon a Certificate  of Good Standing for the Company  issued by the Registrar of
Companies, dated June 1, 1998, a copy of which has been delivered to you today.

     In  expressing  the opinion set forth in  paragraph 7, we have not reviewed
the  register of members of the Company but have relied  solely upon the Company
Certificates  and  the  confirmation  of  the  Transfer  Agent  referred  to  in
subparagraph (d) above.

     In expressing  the opinion set forth in paragraph 10, we have relied solely
upon a certificate of the British Columbia Securities Commission ("BCSC"), dated
June 1, 1998, a copy of which has been delivered to you today.

     The  opinions  expressed  below are  subject to the  qualification  that no
effective  order,  ruling or  decision  has been issued or granted by a court or
regulatory  or  administrative  body  that  has  the  effect  of  precluding  or
restricting  the  offering,  issue  or  sale  by the  Company  of the  Purchased
Securities or restricting any trades of any securities of the Company and at the
relevant  time there is no such  order  affecting  any person  engaged in such a
trade.

     Whenever our opinion  with respect to the  existence or absence of facts or
circumstances  is  qualified  by the  phrases "of which we are aware" or "to our
knowledge",   it  is  intended  to  indicate  that  during  the  course  of  our
representation  of the Company no  information  has come to our attention  which
would give us actual knowledge of the existence of such facts or  circumstances.
However,  other than a review of the Company  Certificates,  the  Agreements and
certain corporate proceedings of the Company which were made available to us and
an  examination  of  our  files  and  inquiries  of the  lawyers  of  this  firm
responsible  for files  relating  to the  Company,  we have not  undertaken  any
special or  independent  investigation  to determine the existence or absence of
such facts or  circumstances.  No inference as to our knowledge as to such facts
and circumstances should be drawn merely from our representation of the Company.

     The opinions expressed herein are restricted to the laws of the Province of
British  Columbia  and  the  federal  laws  of  Canada  applicable  therein.  In
particular,  we express no opinion with respect to the laws of the United States
of America or any state thereof.

     Based and relying upon and subject to the foregoing,  we are of the opinion
that:

     1.   The Company has been duly  amalgamated  and validly  exists  under the
          laws of the Province of British  Columbia and is in good standing with
          respect  to the filing of its  annual  returns  with the Office of the
          Registrar of Companies of British Columbia.

     2.   The Company has all requisite corporate capacity,  power and authority
          to carry on its business as now conducted by it, to own its assets and
          to enter  into,  deliver  and to  perform  its  obligations  under the
          Agreements.

     3.   Each of the  Agreements  has been  duly  authorized  by all  necessary
          corporate action on the part of the Company and has been duly executed
          and delivered by and on behalf of the Company.

     4.   The  Xillix  Subscription  Agreement  is a valid and  legally  binding
          obligation  of  the  Company,   enforceable  against  the  Company  in
          accordance with its terms, except as rights to indemnity and waiver of
          contribution  thereunder  may be limited  under  applicable  law,  and
          subject  to  bankruptcy,  insolvency,   liquidation,   reorganization,
          reconstruction and other similar laws of general application affecting
          the  enforcement  of  creditors'  rights  and to the  availability  of
          equitable  remedies  being in the  discretion  of a court of competent
          jurisdiction.

     5.   None of the execution and delivery of any of the  Agreements,  nor the
          fulfillment  by the Company of the terms  thereof,  conflicts  or will
          conflict  with or results or will  result in a breach of, or creates a
          state of facts  which,  after  notice  or lapse of time or both,  will
          result in a breach of or conflict with any of the terms, conditions or
          provisions  of the  Memorandum  or  Articles of the Company or, to our
          knowledge,  of any resolutions of its shareholders or directors or any
          material  license or permit  issued to the Company or any agreement or
          instrument  to which the Company is a party or by which it is bound as
          of the date hereof.

     6.   The  Purchased  Securities  have been duly and  validly  allotted  and
          issued as fully paid and  non-assessable  common shares in the capital
          of the Company,  and have been duly and validly registered in the name
          of the Purchaser.

     7.   The  authorized  share capital of the Company  consists of 750,000,000
          common shares  without par value,  of which  28,491,525  common shares
          were  issued and  outstanding  as of the close of  business on June 1,
          1998  (ie,  prior to  giving  effect  to the  issue  of the  Purchased
          Securities).

     8.   The  Exchange has  accepted  notice of the  issuance of the  Purchased
          Securities and has  conditionally  approved the listing thereof on the
          Exchange,  subject  to the  satisfaction  of the  conditions  to  such
          acceptance and approval stipulated by the Exchange,  the filing of all
          required  documents and the payment of the required  fees,  all within
          the  times  stipulated  by the  Exchange,  and all as set forth in the
          correspondence  from the Exchange  referred to in subparagraph  (g) on
          page 2.

     9.   To  our  knowledge,  there  are  no  actions,  suits,  proceedings  or
          investigations,  whether on behalf of or against  the  Company and its
          subsidiaries,  taken as a whole,  pending  or  threatened  against  or
          affecting the Company and its  subsidiaries,  taken as a whole, at law
          or in  equity,  before or by any  federal,  provincial,  municipal  or
          governmental   department,   commission,   board,  bureau,  agency  or
          instrumentality,  domestic  or  foreign,  which  would  reasonably  be
          expected  to  materially  adversely  affect  the  property,  assets or
          business  of the Company and its  subsidiaries,  taken as a whole,  or
          which  questions  the validity of the issuance and sale, as fully paid
          and non-assessable,  of all or any of the outstanding common shares of
          the  Company,  or any  action  taken  or to be  taken  by the  Company
          pursuant to or in conjunction with any of the Agreements.

     10.  The  Company  is a  reporting  issuer  and is not in default of filing
          financial  statements  or paying  fees and  charges  relating to those
          filings  required by the Securities Act (British  Columbia) (the "B.C.
          Act") and the regulations thereunder.

     11.  The  offering,  sale and delivery of the  Purchased  Securities by the
          Company to the  Purchaser in  accordance  with the terms of the Xillix
          Subscription Agreement are exempt, either by statute, regulation, rule
          or order, from the prospectus requirements of the B.C. Act and, except
          as have been  obtained or  completed,  no documents are required to be
          filed,   proceedings   taken,  and  no  approval  or  consent  of,  or
          registration  or filing  with,  any  regulatory  authority  in British
          Columbia is required, in order to permit the offering,  issuance, sale
          and  delivery  of  the  Purchased  Securities  by the  Company  to the
          Purchaser,  except for the filing within 10 days of the date hereof of
          reports in prescribed  form  prepared and executed in accordance  with
          applicable securities laws, together with applicable fees.

     12.  The first trade of any of the Purchased Securities by the Purchaser in
          British  Columbia will be deemed to be a distribution in such Province
          and  accordingly  will be subject to the prospectus  and  registration
          requirements contained in the B.C. Act, unless otherwise exempted from
          those requirements.

     This  opinion is limited to the  specific  issues  addressed  herein and is
limited in all respects to laws and interpretations thereof existing on the date
hereof.  We do not  undertake to update this opinion for changes in such laws or
interpretations.  This  opinion may be relied  upon by you solely in  connection
with the  transaction  contemplated  herein and is not to be relied  upon by any
other person or for any other purpose unrelated to this transaction  without our
prior written consent.

                                                  Yours very truly,



<PAGE>


                                   SCHEDULE D

                             PLANS AND ARRANGEMENTS



                              Please see attached.



                                  Exhibit 11.1

                          MIRAVANT MEDICAL TECHNOLOGIES
              Statement Regarding Computation of Net Loss Per Share
                                   (Unaudited)

<TABLE>
<CAPTION>

                                                             Three months ended                     Six months ended
                                                                  June 30,                             June 30,

                                                         1998                1997                1998               1997
                                                   -----------------   -----------------   ------------------ ------------------
<S>                                                <C>                 <C>                 <C>                <C>   

Basic
Net loss.........................................   $   (9,064,000)     $   (5,736,000)    $    (16,981,000)  $     (11,173,000) 
                                                   =================   =================   ================== ==================

Weighted average common shares outstanding.......       14,104,004          12,365,451           14,102,940          12,368,328
                                                   =================   =================   ================== ==================
Net loss per share...............................  $         (0.64)     $        (0.46)    $          (1.20)  $           (0.90)  
                                                   =================   =================   ================== ==================



Diluted
Net loss.........................................   $   (9,064,000)     $   (5,736,000)    $    (16,981,000)  $     (11,173,000) 
                                                   =================   =================   ================== ==================

Weighted average common shares outstanding.......       14,104,004          12,365,451           14,102,940          12,368,328
                                                   =================   =================   ================== ==================
Net loss per share...............................  $         (0.64)     $        (0.46)    $          (1.20)  $           (0.90)  
                                                   =================   =================   ================== ==================
                                                  


</TABLE>



<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE  CONTAINS SUMMARY  FINANCIAL  INFORMATION  EXTRACTED FROM THE
CONSOLIDATED  BALANCE SHEETS AND CONSOLIDATED  STATEMENTS OF OPERATIONS FOUND IN
THE COMPANY'S FORM 10-Q FOR THE PERIOD ENDING JUNE 30, 1998, AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>                                              
<MULTIPLIER>                                  1,000

       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                              Dec-31-1998
<PERIOD-START>                                 Jan-1-1998
<PERIOD-END>                                   Jun-30-1998
<CASH>                                         26,909
<SECURITIES>                                   26,596
<RECEIVABLES>                                  473
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               54,528
<PP&E>                                         10,250
<DEPRECIATION>                                 (4,129)
<TOTAL-ASSETS>                                 66,112
<CURRENT-LIABILITIES>                          4,612
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       164,129
<OTHER-SE>                                     (102,629)
<TOTAL-LIABILITY-AND-EQUITY>                   66,112
<SALES>                                        0
<TOTAL-REVENUES>                               1,966
<CGS>                                          0
<TOTAL-COSTS>                                  21,141
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             1
<INCOME-PRETAX>                                (16,981)
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            (16,981)
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   (16,981)
<EPS-PRIMARY>                                  (1.20)
<EPS-DILUTED>                                  (1.20)
        


</TABLE>


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