Exhibit 4.2

                                   EXHIBIT B-1

                                       TO

                         UNSECURED CONVERTIBLE DEBENTURE
                         AND WARRANT PURCHASE AGREEMENT
                                DEBENTURE WARRANT

NEITHER THIS WARRANT NOR ANY SHARES OF COMMON STOCK  ISSUABLE  UPON THE EXERCISE
OF THIS  WARRANT  HAVE BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS
AMENDED, AND THE RULES AND REGULATIONS  PROMULGATED  THEREUNDER (THE "SECURITIES
ACT").  THIS WARRANT AND THE COMMON STOCK ISSUABLE UPON EXERCISE OF THIS WARRANT
MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED IN THE ABSENCE OF REGISTRATION
UNDER THE SECURITIES  ACT OR UNLESS SUCH OFFER,  SALE OR TRANSFER IS EXEMPT FROM
SUCH REGISTRATION.

[INSERT SIDE LETTER LEGEND, IF APPLICABLE]

                          MIRAVANT MEDICAL TECHNOLOGIES
                    COMMON STOCK PURCHASE WARRANT CERTIFICATE

Dated:  August 28, 2003

     ________________________________________________________     to    purchase
____________  Shares of Common  Stock,  par value  $.01 per Share,  of  MIRAVANT
MEDICAL TECHNOLOGIES.

     MIRAVANT  MEDICAL  TECHNOLOGIES,  a Delaware  corporation  (the "Company"),
hereby certifies that _________________________________________, its permissible
transferees, designees, successors and assigns (collectively, the "Holder"), for
value received,  is entitled to purchase from the Company at any time commencing
on August 28, 2003 and terminating  August 28, 2008 (the "Termination  Date") up
to  _____________  shares (each a "Share" and  collectively the "Shares") of the
Company's  common stock,  par value $.01 per Share (the "Common  Stock"),  at an
exercise  price of ONE DOLLAR  ($1.00)  per share (the  "Exercise  Price").  The
number of Shares  purchasable  hereunder  and the Exercise  Price are subject to
adjustment  as  provided  in  Section 4 hereof.  The  Termination  Date shall be
extended  by one (1) day for each day on which (i) the  Company  does not have a
number of shares of Common Stock  reserved for issuance upon exercise  hereof at
least equal to the number of Shares  issuable upon exercise  hereof  [(excluding
any period during which the Holder  hereof has waived,  pursuant to that certain
Side Letter Agreement dated as of August 28, 2003 by and between the Company and
the  initial  Holder  of  this  Warrant  (the  "Side  Letter  Agreement"),   the
requirement that the Company have a sufficient  number of shares of Common Stock
reserved  for  issuance  upon  exercise  hereof)]  or (ii)  the  Shares  are not
registered for resale pursuant to the terms of the Registration Rights Agreement
(as  defined  in  Section  6 hereof)  when such  Shares  are  required  to be so
registered  thereunder.  This Warrant Certificate is being issued by the Company
pursuant to that certain  Unsecured  Convertible  Debenture and Warrant Purchase
Agreement,  dated as of August 28, 2003,  by and among the Company and the other
signatories thereto (the "Purchase Agreement"),  and is subject to the terms and
provisions thereof.

1. Exercise of Warrants.  Upon  presentation  and surrender of this Common Stock
Purchase  Warrant   Certificate   ("Warrant   Certificate"  or   "Certificate"),
accompanied by a completed  Election to Purchase in the form attached  hereto as
Exhibit A (the "Election to Purchase") duly executed, at the principal office of
the Company  currently  located at 336 Bollay Drive,  Santa Barbara,  California
93117,  Attn:  Chief  Financial  Officer (or such other  office or agency of the
Company  within the United  States as the Company may  designate to the Holder),
together  with (a) a check  payable to, or wire  transfer to, the Company in the
amount of the Exercise Price  multiplied by the number of Shares being purchased
or (b) if the Holder is effectuating a Cashless  Exercise (as defined in Section
9 hereof) pursuant to Section 9 hereof,  written notice of an election to effect
such a Cashless  Exercise for the number of Shares  specified in the Election to
Purchase, the Company or the Company's Transfer Agent, as the case may be, shall
as  soon as  practicable,  but in any  event  within  three  (3)  business  days
thereafter,  deliver  to the  Holder  hereof  certificates  for  fully  paid and
non-assessable  shares of Common  Stock  which in the  aggregate  represent  the
number of Shares being purchased. The certificates so delivered shall be in such
denominations  as may be requested by the Holder and shall be  registered in the
name of the Holder or such other name as shall be designated by the Holder.  All
or  less  than  all of the  Warrants  represented  by  this  Certificate  may be
exercised and, in case of the exercise of less than all, the Company shall, upon
surrender hereof, at the Company's expense,  deliver to the Holder a new Warrant
Certificate or  Certificates  of like tenor and dated the date hereof  entitling
said Holder to purchase  the number of Shares  represented  by this  Certificate
which have not been exercised.

2. Transfer, Exchange, Redemption and Replacement of Warrant.

(a)  Transfer.  This Warrant  Certificate  and the rights  granted to the Holder
hereof are  transferable,  in whole or in part,  upon  surrender of this Warrant
Certificate,   together   with  a  properly   executed  Form  of  Assignment  in
substantially  the form attached as Exhibit B hereto, at the office or agency of
the Company  referred  to in Section  2(e) below,  provided,  however,  that any
transfer or assignment  shall be subject to the condition set forth in Section 8
of this Warrant Certificate and any additional  transfer  restrictions set forth
in the Purchase Agreement [or the Side Letter Agreement].  Until due presentment
for registration of transfer on the books of the Company,  the Company may treat
the  registered  holder  hereof as the owner and Holder hereof for all purposes,
and the Company  shall not be affected by any notice to the  contrary.  Upon the
Company's  receipt  of a duly  executed  Form of  Assignment,  and in any event,
within three (3) business  days  thereafter,  the Company  shall issue a Warrant
Certificate  to the  transferee to evidence that portion of these  Warrants that
has been so  transferred  or  assigned,  and,  if less that all of the  Warrants
represented  by this Warrant  Certificate  have been so transferred or assigned,
the  Company  shall also issue a Warrant  Certificate  to the Holder to evidence
that  portion  of these  Warrants  as  shall  not have  been so  transferred  or
assigned.

(b) Exchange.  At any time prior to the exercise hereof, this Certificate may be
exchanged upon  presentation  and surrender to the Company,  alone or with other
Certificates of like tenor of different denominations  registered in the name of
the same Holder,  for another  Certificate or  Certificates of like tenor in the
name of such  Holder  exercisable  for the  aggregate  number  of  Shares as the
Certificate or Certificates surrendered.

(c)  Replacement  of Warrant  Certificate.  Upon receipt of evidence  reasonably
satisfactory to the Company of the loss,  theft,  destruction,  or mutilation of
this  Warrant  Certificate  and,  in  the  case  of any  such  loss,  theft,  or
destruction,  upon delivery of an indemnity agreement reasonably satisfactory in
form and amount to the  Company,  or, in the case of any such  mutilation,  upon
surrender and  cancellation  of this Warrant  Certificate,  the Company,  at its
expense,  will execute and deliver in lieu thereof, a new Warrant Certificate of
like tenor.

(d)  Cancellation;  Payment of  Expenses.  Upon the  surrender  of this  Warrant
Certificate in connection with any transfer, exchange or replacement as provided
in this Section 2, this Warrant  Certificate  shall be promptly  canceled by the
Company.  The Company shall pay all taxes (other than securities  transfer taxes
or other  taxes  imposed  on the Holder  based  upon a measure  of the  Holder's
income) and all other expenses (other than legal expenses,  if any,  incurred by
the  Holder  or  transferees)   and  charges  payable  in  connection  with  the
preparation,   execution,  delivery  and  performance  of  Warrant  Certificates
pursuant to this Section 2. The Company shall indemnify and reimburse the Holder
for all  losses and  damages  arising as a result of or related to any breach of
the terms of this Warrant  Certificate,  including costs and expenses (including
legal fees)  incurred by such Holder in connection  with the  enforcement of its
rights hereunder.

(e) Warrant  Register.  The Company shall maintain,  at its principal  executive
offices (or at the offices of the transfer agent for the Warrant  Certificate or
such other office or agency of the Company as it may  designate by notice to the
Holder  hereof),   a  register  for  this  Warrant   Certificate  (the  "Warrant
Register"), in which the Company shall record the name and address of the person
in whose name this Warrant  Certificate has been issued, as well as the name and
address of each transferee and each prior owner of this Warrant Certificate.

3. Rights and  Obligations  of Holders of this  Certificate.  The Holder of this
Certificate  shall  not,  by  virtue  hereof,  be  entitled  to any  rights of a
stockholder in the Company, either at law or in equity; provided,  however, that
in the  event any  certificate  representing  shares  of  Common  Stock or other
securities  is issued to the Holder  hereof upon  exercise of some or all of the
Warrants,  the Holder  shall,  for all  purposes,  be deemed to have  become the
holder of record of such  Common  Stock on the date on which  this  Certificate,
together with a duly executed Election to Purchase,  was surrendered and payment
of the  aggregate  Exercise  Price was made  (including  pursuant  to a Cashless
Exercise),   irrespective   of  the  date  of  delivery  of  such  Common  Stock
certificate.

4.  Anti-Dilution  Adjustments.  The  Exercise  Price  and the  number of Shares
issuable  hereunder shall be subject to adjustment from time to time as provided
in this Section 4.

(a) Stock Splits,  Stock Dividends,  Etc. If, at any time and from time to time,
the number of outstanding  shares of Common Stock is increased by a stock split,
stock  dividend,  combination,  reclassification  or other  similar  event,  the
Exercise Price shall be proportionately reduced, or if the number of outstanding
shares of Common  Stock is  decreased  by a reverse  stock  split,  combination,
reclassification   or  other  similar   event,   the  Exercise  Price  shall  be
proportionately  increased.  Upon each adjustment of the Exercise Price pursuant
to the  provisions  of this Section  4(a),  the number of Shares  issuable  upon
exercise  of  these  Warrants  at such  Exercise  Price  shall  be  adjusted  by
multiplying the Exercise Price in effect immediately prior to such adjustment by
the number of Shares issuable upon exercise of these Warrants  immediately prior
to such adjustment and dividing the product so obtained by the adjusted Exercise
Price.

(b)  Distributions.  If, at any time and from time to time,  the  Company  shall
declare or make any distribution of its assets (or rights to acquire its assets)
to holders of Common Stock as a partial liquidating  dividend,  by way of return
of capital or otherwise (including any dividend or distribution to the Company's
stockholders in cash or shares (or rights to acquire shares) of capital stock of
a subsidiary  (i.e.,  a spin-off))  (a  "Distribution"),  then the Holder hereof
shall be entitled,  upon any exercise of these Warrants after the date of record
for determining stockholders entitled to such Distribution (or if no such record
is taken,  the date on which such  Distribution is declared or made), to receive
the  amount of such  assets  which  would have been  payable to the Holder  with
respect to the Shares issuable upon such exercise  (without giving effect to the
limitations  contained  in Section 8 hereof)  had the Holder  been the holder of
such Shares on the record date for the determination of stockholders entitled to
such  Distribution  (or if no such  record  is  taken,  the date on  which  such
Distribution is declared or made).

(c) Purchase  Rights.  If, at any time and from time to time, the Company issues
any securities or other instruments which are convertible into or exercisable or
exchangeable for Common Stock ("Convertible Securities") or options, warrants or
other rights to purchase or subscribe for Common Stock or Convertible Securities
("Purchase Rights") pro rata to the record holders of the Common Stock,  whether
or  not  such   Convertible   Securities  or  Purchase  Rights  are  immediately
convertible,  exercisable  or  exchangeable,  then the  Holder  hereof  shall be
entitled,  upon any  exercise  of these  Warrants  after the date of record  for
determining  stockholders  entitled to receive such  Convertible  Securities  or
Purchase  Rights  (or if no  such  record  is  taken,  the  date on  which  such
Convertible  Securities or Purchase Rights are issued), to receive the aggregate
number of Convertible  Securities or Purchase Rights which the Holder would have
received with respect to the Shares issuable upon such exercise  (without giving
effect to the limitations contained in Section 8 hereof) had the Holder been the
holder of such Shares on the record date for the  determination  of stockholders
entitled to receive such  Convertible  Securities  or Purchase  Rights (or if no
such record is taken, the date on which such Convertible  Securities or Purchase
Rights were  issued).  If the right to exercise or convert any such  Convertible
Securities or Purchase  Rights would expire in accordance with their terms prior
to the exercise of these Warrants, then the terms of such Convertible Securities
or Purchase  Rights shall  provide that such  exercise or  convertibility  right
shall remain in effect until thirty (30) days after the date the Holder receives
such Convertible Securities or Purchase Rights pursuant to the exercise hereof.

(d) Corporate Change.  If, at any time and from time to time, there shall be (i)
any  reclassification or change in the terms of the outstanding shares of Common
Stock (other than a change in par value,  or from par value to no par value,  or
from no par value to par value, or as a result of a subdivision or combination),
(ii) any  consolidation  or merger of the Company with any other  entity  (other
than a merger in which the Company is the surviving or continuing entity and its
capital stock is unchanged),  (iii) any sale or transfer of all or substantially
all of the assets of the Company or (iv) any share exchange or other transaction
pursuant to which all of the  outstanding  shares of Common Stock are  converted
into other  securities or property  (each of (i) - (iv) above being a "Corporate
Change"), then the Holder hereof shall thereafter have the right to receive upon
exercise,  in lieu of the  Shares  otherwise  issuable,  such  shares  of stock,
securities  and/or  other  property as would have been issued or payable in such
Corporate  Change with  respect to or in exchange for the number of Shares which
would have been issuable upon exercise had such Corporate Change not taken place
(without giving effect to the limitations contained in Section 8 hereof), and in
any  such  case,  appropriate  provisions  (in  form  and  substance  reasonably
satisfactory  to the  Holder)  shall be made  with  respect  to the  rights  and
interests of the Holder to the end that the economic  value of these Warrants is
in no way diminished by such Corporate Change.  The Company shall not effect any
Corporate  Change  unless  (A) the Holder has  received  written  notice of such
transaction at least thirty (30) days prior thereto,  but in no event later than
five (5) days prior to the record  date for the  determination  of  stockholders
entitled  to vote with  respect  thereto,  and (B) the  resulting  successor  or
acquiring entity (if not the Company) assumes by written instrument (in form and
substance reasonable  satisfactory to the Holder) the obligations of the Company
under this Warrant Certificate.

(e) Other Action  Affecting  Shares or Exercise Price.  If, at any time and from
time to time, the Company takes any action affecting the Common Stock that would
be covered by this  Section 4, but for the manner in which such  action is taken
or structured, which would in any way diminish the value of these Warrants, then
the Exercise Price and the number of Shares  issuable upon exercise hereof shall
be  proportionately  adjusted  in such manner as the Board of  Directors  of the
Company shall in good faith determine to be equitable under the circumstances.

(f)  Notice  of   Adjustments.   Upon  the  occurrence  of  each  adjustment  or
readjustment  of the  Exercise  Price  pursuant to this Section 4 amounting to a
more than one percent (1%) change in such Exercise  Price,  or any change to the
number of Shares or other  shares of stock,  securities  and/or  other  property
issuable upon  exercise  hereof,  the Company,  at its expense,  shall  promptly
compute such adjustment or readjustment or change and prepare and furnish to the
Holder a certificate setting forth such adjustment or readjustment or change and
showing in detail the facts upon which such adjustment or readjustment or change
is based.

(g) Notice of Certain Transactions.  In the event that the Company shall propose
(i) to pay any dividend payable in securities of any class to the holders of its
Common  Stock or to make any other  non-cash  dividend  or  distribution  to the
holders  of its Common  Stock,  (ii) to offer the  holders  of its Common  Stock
rights to subscribe for or to purchase any securities convertible into shares of
Common Stock or shares of stock of any class or any other securities,  rights or
options,   (iii)  to  effect  any  capital   reorganization,   reclassification,
consolidation or merger affecting the class of Common Stock, as a whole, or (iv)
to effect the voluntary or involuntary dissolution, liquidation or winding-up of
the Company,  the Company shall, within the time limits specified below, send to
the  Holder a notice of such  proposed  action or offer.  Such  notice  shall be
mailed to the Holder at its  address as it appears in the Warrant  Register  (as
defined in Section  2(e)),  which shall specify the record date for the purposes
of such dividend,  distribution or rights, or the date such issuance or event is
to take place and the date of  participation  therein  by the  holders of Common
Stock, if any such date is to be fixed, and shall briefly indicate the effect of
such action on the Common  Stock and on the number and kind of any other  shares
of stock and on other property, if any, and the number of shares of Common Stock
and other property,  if any, issuable upon exercise of each Warrant  Certificate
and the Exercise Price after giving effect to any adjustment pursuant to Section
4 which will be required as a result of such action.  Such notice shall be given
as promptly as possible and (x) in the case of any action  covered by clause (i)
or (ii) above,  at least ten (10) days prior to the record date for  determining
holders of the Common  Stock for  purposes  of such action or (y) in the case of
any other such action, at least twenty (20) days prior to the date of the taking
of such proposed action or the date of  participation  therein by the holders of
Common Stock, whichever shall be the earlier.

(h) No Impairment of Holder's Rights. The Company shall not, by amendment of its
Certificate of Incorporation or Bylaws or through any  reorganization,  transfer
of assets,  consolidation,  merger, dissolution,  issue or sale of securities or
any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms of this Warrant  Certificate,  but will at all times in good
faith  assist in the  carrying  out of all such  terms and in the  taking of all
action as may be necessary or  appropriate in order to protect the rights of the
Holder against dilution or other impairment.

5. Certain Agreements of the Company. The Company hereby covenants and agrees as
follows:

(a) Shares to be Fully Paid.  All shares of Common Stock  issuable upon exercise
of these  Warrants  will,  upon  issuance in  accordance  with the terms of this
Warrant  Certificate,  be duly and validly authorized and issued, fully paid and
non-assessable and free from all taxes, liens, claims and encumbrances.

(b) Reservation of Shares.  [Subject to the terms of the Side Letter  Agreement,
the / The] Company  shall at all times  reserve and keep  available for the sole
purpose of issuance upon  exercise of these  Warrants,  an authorized  number of
shares of its Common Stock and other applicable  securities sufficient to permit
the exercise in full of these Warrants  (without giving effect to the limitation
set forth in Section 8 hereof).

(c)  Listing.  [Subject  to the terms of the Side Letter  Agreement,  the / The]
Company shall promptly secure the listing of the shares of Common Stock issuable
upon  exercise  of these  Warrants  upon each  national  securities  exchange or
automated or electronic  quotation  system,  if any, upon which shares of Common
Stock are then listed or become listed  (subject to official  notice of issuance
upon exercise of this Warrant  Certificate)  and shall maintain,  so long as any
other shares of Common  Stock shall be so listed,  such listing of all shares of
Common  Stock  from time to time  issuable  upon the  exercise  of this  Warrant
Certificate;  and the Company shall so list on each national securities exchange
or  automated  or  electronic  quotation  system,  as the case may be, and shall
maintain  such  listing  of, any other  shares of capital  stock of the  Company
issuable upon the exercise of these Warrants if and so long as any shares of the
same class shall be listed on such national  securities exchange or automated or
electronic quotation system.

(d) Blue Sky Laws. The Company  shall,  on or before the date of issuance of any
Shares  pursuant  hereto,  take such  actions as the  Company  shall  reasonably
determine are  necessary to qualify the Shares for, or obtain  exemption for the
Shares from, sale to the Holder hereof upon the exercise of these Warrants under
applicable securities or "blue sky" laws of the states of the United States, and
shall  provide  evidence of any such action so taken to the Holder prior to such
date;  provided,  however,  that the Company shall not be required in connection
therewith  or as a  condition  thereto  to (i)  qualify  to do  business  in any
jurisdiction  where it would not  otherwise  be required to qualify but for this
Section 5(d), (ii) subject itself to general  taxation in any such  jurisdiction
or (iii) file a general consent to service of process in any such jurisdiction.

6.  Registration  Rights.  The  Holder  is  entitled  to  the  benefit  of  such
registration  rights  in  respect  of  the  Shares  as  are  set  forth  in  the
Registration  Rights  Agreement  dated as of the date  hereof  by and  among the
Company and, among others, the Holder, which was executed in connection with the
Purchase Agreement (the "Registration Rights Agreement").

7. Fractional  Shares. No fractional shares of Common Stock shall be issued upon
the exercise of these Warrants.  In lieu of issuance of a fractional  share upon
any exercise hereunder,  the Company shall pay the cash value of that fractional
share,  calculated  on the basis of the Market  Price (as  defined in Section 11
below) of a share of Common Stock on the date of exercise.

8. Additional Restrictions on Exercise or Transfer. In no event shall the Holder
hereof have the right to exercise any portion of the Warrants  evidenced by this
Warrant  Certificate  for shares of Common Stock or to dispose of any portion of
the Warrants evidenced by this Warrant Certificate to the extent that such right
to effect  such  exercise  or  disposition  would  result in the  holder and its
affiliates  together  beneficially  owning  more than  4.95% of the  outstanding
shares of Common  Stock.  For purposes of this Section 8,  beneficial  ownership
shall be determined in accordance with Section 13(d) of the Securities  Exchange
Act of 1934,  as amended,  and  Regulation  13D-G  thereunder.  The  restriction
contained in this Section 8 may not be altered,  amended,  deleted or changed in
any manner whatsoever unless the holders of a majority of the outstanding shares
of  Common  Stock  and  the  Holder  hereof  shall  approve,  in  writing,  such
alteration, amendment, deletion or change.

9. Cashless  Exercise.  Subject to the Company's  written  approval (if required
pursuant to this Section 9), the Warrants evidenced by this Warrant  Certificate
may be exercised by  presentation  and surrender of this Warrant  Certificate to
the Company at its  principal  executive  offices  with a written  notice of the
Holder's intention to effect a cashless exercise, including a calculation of the
number of shares of Common Stock to be issued upon such  exercise in  accordance
with the terms hereof (a "Cashless Exercise"). Notwithstanding the foregoing, in
the event that,  at the time of  exercise,  there is an  effective  registration
statement  under the  Securities Act covering the resale of all of the shares of
Common  Stock  then  issuable  upon  exercise  in full of  this  Warrant  (which
registration statement is not subject to any stop order or otherwise unavailable
for use by the Holder  hereof),  the written  approval  of the Company  shall be
required to effect a Cashless Exercise.  In the event of a Cashless Exercise, in
lieu of paying the  Exercise  Price in cash,  the holder  shall  surrender  this
Warrant  Certificate  for that number of shares of Common  Stock  determined  by
multiplying  the number of Shares to which it would  otherwise  be entitled by a
fraction, the numerator of which shall be the difference between the then Market
Price  of the  Common  Stock on the date of  immediately  preceding  the date of
exercise  and the Exercise  Price,  and the  denominator  of which shall be such
Market Price of the Common Stock.

10.  Company  Default.  If, at any time,  the Holder hereof submits this Warrant
Certificate,  an Election to Purchase and payment to the Company of the Exercise
Price for each of the Shares  specified in the  Election to Purchase  (including
pursuant to a Cashless  Exercise),  and the Company  fails for any reason (other
than the reasons  contemplated  by Section 8 hereof) to deliver,  on or prior to
the  fourth  (4th)  business  day  following  the date on which the  Company  is
required to deliver the certificate(s) for the Shares so acquired, the number of
Shares to which  the  holder  is  entitled  upon  such  exercise  (an  "Exercise
Default"),  then the Company shall pay to the Holder payments ("Exercise Default
Payments") for an Exercise  Default in the amount of (i) (N/365),  multiplied by
(ii) the amount by which the Market  Price on the date the  Election to Purchase
giving rise to the Exercise  Default is transmitted in accordance with Section 1
(the  "Exercise  Default  Date")  exceeds the Exercise  Price in respect of such
Shares,  multiplied  by (iii)  the  number of Shares  the  Company  failed to so
deliver in such  Exercise  Default,  multiplied  by (d) .24,  where N equals the
number  of days from the  Exercise  Default  Date to the date  that the  Company
effects the full  exercise  of these  Warrants  which gave rise to the  Exercise
Default.  The accrued  Exercise Default Payment for each calendar month shall be
paid in cash upon demand therefor by the Holder.  Nothing herein shall limit the
Holder's right to pursue actual damages for the Company's  failure to maintain a
sufficient  number of authorized  shares of Common Stock as required pursuant to
the terms of Section  5(b) hereof or to  otherwise  issue shares of Common Stock
upon  exercise of these  Warrants in accordance  with the terms hereof,  and the
Holder shall have the right to pursue all remedies available at law or in equity
(including a decree of specific performance and/or injunctive relief).

11.  Definition  of Market  Price.  For  purposes of this  Warrant  Certificate,
"Market  Price" means,  as of any date, the last sales price per share of Common
Stock on the Nasdaq SmallCap Market or other principal trading market where such
security is listed or traded as reported by  Bloomberg  Financial  Markets (or a
comparable  reporting  service of national  reputation  selected by the Company,
"Bloomberg"),  or if the foregoing does not apply, the last reported sales price
of such security on a national exchange or in the over-the-counter market on the
electronic bulletin board for such security as reported by Bloomberg,  or, if no
such price is reported for such  security by  Bloomberg,  the average of the bid
prices of all market  makers for such  security as reported in the "pink sheets"
by the National  Quotation Bureau,  Inc., in each case for such date or, if such
date was not a trading day for such  security,  on the next preceding date which
was a trading  day. If the  Closing  Sales Price  cannot be  calculated  for the
Common  Stock as of  either of such  dates on any of the  foregoing  bases,  the
Market  Price of the Common Stock on such date shall be the fair market value as
reasonably  determined by an investment banking firm selected by the Company and
reasonably  acceptable  to the Holder,  with the costs of such  appraisal  to be
borne by the Company.  The manner of determining  the Market Price of the Common
Stock set forth in the  foregoing  definition  shall  apply with  respect to any
other  security in respect of which a  determination  as to market value must be
made hereunder.

12. Merger or Consolidation.  The Company shall not merge or consolidate with or
into any other entity,  or sell or otherwise  transfer its property,  assets and
business  substantially  as an entirety to another person or entity,  unless the
entity resulting from such merger or consolidation (if not the Company), or such
transferee  person or entity,  as the case may be, shall  expressly  assume,  by
supplemental  agreement  reasonably  satisfactory  in form and  substance to the
Holder,  the due and  punctual  performance  and  observance  of each and  every
covenant and condition of this Warrant  Certificate to be performed and observed
by the Company.

13. Notices.  Except as otherwise specified herein to the contrary, all notices,
requests,  demands  and other  communications  required  or  desired to be given
hereunder shall only be effective if given in writing by certified or registered
U.S.  mail with  return  receipt  requested  and  postage  prepaid;  by  private
overnight delivery service (e.g. Federal Express); by facsimile transmission (if
no original documents or instruments must accompany the notice);  or by personal
delivery.  Any such  notice  shall be deemed to have been given (i) on the fifth
(5th)  business day  immediately  following  the mailing  thereof,  if mailed by
certified or registered U.S. mail as specified  above;  (ii) on the business day
immediately  following deposit with a private overnight delivery service if sent
by said service;  (iii) upon receipt of  confirmation of transmission if sent by
facsimile  transmission;  or (iv) upon personal delivery of the notice. All such
notices  shall be sent to the  following  addresses (or to such other address or
addresses as a party may have  advised the other in the manner  provided in this
Section 13):

(a) If to the Company:

                           Miravant Medical Technologies
                           336 Bollay Drive
                           Santa Barbara, CA 93117

                           Attention: Gary S. Kledzik, Chief Executive Officer
                           Facsimile:   (805) 685-7981
                           Telephone:  (805) 685-9880

(b) If to the Holder,  to the address set forth under the  Holder's  name on the
signature page to the Purchase Agreement executed by the Holder, or to any other
address specified by the Holder in writing to the Maker.

Notwithstanding  the time of effectiveness of notices set forth in this Section,
an Election to Purchase shall not be deemed  effectively given until it has been
duly completed and submitted to the Company  together with the original  Warrant
Certificate  to be exercised  and payment of the Exercise  Price in a manner set
forth in Section 1.

14. Governing Law:  Jurisdiction.  This Warrant Certificate shall be governed by
and construed in accordance with the laws of the State of Delaware applicable to
contracts  made and to be  performed  in the  State  of  Delaware.  The  Company
irrevocably consents to the jurisdiction of the United States federal courts and
state courts located in the County of New Castle in the State of Delaware in any
suit or  proceeding  based on or arising  under  this  Warrant  Certificate  and
irrevocably  agrees that all claims in respect of such suit or proceeding may be
determined  in such  courts.  The Company  irrevocably  waives the defense of an
inconvenient  forum to the maintenance of such suit or proceeding in such forum.
The Company  further  agrees that service of process upon the Company  mailed by
the first  class  mail in  accordance  with  Section 13 shall be deemed in every
respect  effective service of process upon the Company in any suit or proceeding
arising  hereunder.  Nothing  herein shall  affect the  Holder's  right to serve
process in any other manner  permitted  by law. The Company  agrees that a final
non-appealable  judgment in any such suit or proceeding  shall be conclusive and
may be enforced in other  jurisdictions by suit on such judgment or in any other
lawful manner.  The Company  irrevocably waives the right to trial by jury under
applicable law.

15. Successors and Assigns.  This Warrant  Certificate shall be binding upon and
shall inure to the benefit of the parties hereto and their respective successors
and assigns.

16. Headings.  The headings of various sections of this Warrant Certificate have
been  inserted  for  reference   only  and  shall  not  affect  the  meaning  or
construction of any of the provisions hereof.

17.  Severability.  If any provision of this Warrant  Certificate  is held to be
unenforceable  under  applicable law, such provision shall be excluded from this
Warrant  Certificate,  and the balance  hereof shall be  interpreted  as if such
provision were so excluded.

18.  Modification  and Waiver.  Subject to the express  provisions  of Section 8
hereof,  this  Warrant  Certificate  and any  provision  hereof may be  amended,
waived,  discharged or terminated only by an instrument in writing signed by the
Company and the Holder.

19. Specific  Enforcement.  The Company acknowledges and agrees that irreparable
damage  would  occur in the event  that any of the  provisions  of this  Warrant
Certificate  were not performed in accordance  with their specific terms or were
otherwise  breached.  It is accordingly agreed that the Holder shall be entitled
to an injunction or injunctions to prevent or cure breaches of the provisions of
this Warrant  Certificate and to enforce  specifically  the terms and provisions
hereof,  this being in addition to any other  remedy to which it may be entitled
by law or equity.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]





                     [SIGNATURE PAGE TO WARRANT CERTIFICATE]

     IN WITNESS WHEREOF,  the Company has caused this Warrant  Certificate to be
duly executed,  manually or by facsimile,  by one of its officers thereunto duly
authorized.

                                            MIRAVANT MEDICAL TECHNOLOGIES

                                            By:_______________________
                                            Name:    Gary S. Kledzik
                                            Title:   Chief Executive Officer






                                    Exhibit A

                                       to

                               Warrant Certificate

                              ELECTION TO PURCHASE

To Be Executed by the Holder
in Order to Exercise the Warrant Certificate

     The  undersigned  Holder hereby elects to exercise  _______ of the Warrants
represented by the attached Warrant  Certificate,  and to purchase the shares of
Common Stock  issuable  upon the exercise of such  Warrants,  and requests  that
certificates for securities be issued in the name of:

                                  ==========================================
                                   (Please type or print name and address)

                                   ------------------------------------------
                                  (Social Security or Tax Identification Number)

and delivered to:______________________________________________________________
                (Please type or print name and address if different from above)

     If such  number of Warrants  being  exercised  hereby  shall not be all the
Warrants  evidenced  by  the  attached  Warrant   Certificate,   a  new  Warrant
Certificate for the balance of such Warrants shall be registered in the name of,
and delivered to, the Holder at the address set forth below.

     In  full  payment  of the  purchase  price  with  respect  to the  Warrants
exercised, the undersigned hereby:

     |_| tenders  payment of the Exercise  Price in the amount of $__________ by
check,  money order or wire transfer  payable in United  States  currency to the
order of Miravant Medical Technologies.

     |_| elects to effect a Cashless  Exercise  (as  defined in Section 9 of the
Warrant  Certificate) by surrendering the Warrant  Certificate for an additional
_________ shares of Common Stock.

                                            HOLDER:

                                        By:_____________________________________
                                                  Name:
                                                  Title:

                                                  Address:

Dated:___________________





                                    Exhibit B

                                       to

                               Warrant Certificate

                               FORM OF ASSIGNMENT

                   (To be signed only on transfer of Warrant)

     For value received,  the undersigned hereby sells,  assigns,  and transfers
unto  _____________  the right  represented  by the within  Warrant to  purchase
______  shares of Common  Stock of  Miravant  Medical  Technologies,  a Delaware
corporation,    to   which   the   within   Warrant   relates,    and   appoints
____________________  Attorney to  transfer  such right on the books of Miravant
Medical Technologies, a Delaware corporation, with full power of substitution of
premises.

Dated:                                      By:_________________________________
                                            Name:
                                            Title:

(signature  must  conform  to name of  holder  as  specified  on the face of the
Warrant)

                   Address: _________________________________


         Signed in the presence of :



         Dated: