Exhibit 10.1

     Confidential Materials omitted and filed separately with the Securities
              and Exchange Commission. Asterisks denote omissions.



                          LICENSE AND SUPPLY AGREEMENT

                                      among

                        COLLAGENEX PHARMACEUTICALS, INC.,

                                       and

                       MUTUAL PHARMACEUTICAL COMPANY, INC.

                                       and

                          UNITED RESEARCH LABORATORIES








                                  APRIL 8, 2004






                    COLLAGENEX-MUTUAL License & Supply Agmt
                                                     i
                          LICENSE AND SUPPLY AGREEMENT


                                Table of Contents


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

ARTICLE II - INTELLECTUAL PROPERTY GRANTS..............................   11

ARTICLE III - PAYMENTS AND INVENTORY COMPETITIVE PRICING
ADJUSTMENTS............................................................   14

ARTICLE IV - SUPPLY....................................................   24

ARTICLE V - REPRESENTATIONS, WARRANTIES AND COVENANTS..................   36

ARTICLE VI - INTELLECTUAL PROPERTY AND CONFIDENTIAL INFORMATION........   43

ARTICLE VII - TERM AND TERMINATION.....................................   47

ARTICLE VIII - INDEMNIFICATION, INSURANCE AND DISPUTE
RESOLUTION.............................................................   53

ARTICLE IX - MISCELLANEOUS.............................................   61




                          LICENSE AND SUPPLY AGREEMENT

                                    PREAMBLE

     This LICENSE AND SUPPLY  AGREEMENT  dated as of the 8th day of April,  2004
(the  "Execution  Date") is by and among  CollaGenex  Pharmaceuticals,  Inc.,  a
Delaware  corporation  having  its  principal  place  of  business  in  Newtown,
Pennsylvania ("COLLAGENEX"), on the one hand; and Mutual Pharmaceutical Company,
Inc.,  a  Pennsylvania  corporation  having its  principal  place of business in
Philadelphia,  Pennsylvania ("Mutual") and United Research Laboratories, Inc., a
Pennsylvania corporation having its principal place of business in Philadelphia,
Pennsylvania ("URL") (Mutual and URL are,  collectively,  "URL/MUTUAL"),  on the
other hand (CollaGenex and URL/Mutual are, collectively, the "Parties").

     WHEREAS,  the Parties wish to amicably settle certain litigation  currently
ongoing between them; and WHEREAS,  URL/MUTUAL  desires to exclusively  purchase
certain  products  from  COLLAGENEX  for  resale to its  distributors  and other
customers  for  ultimate  sale to  consumers in the  Territory,  and  COLLAGENEX
desires to supply such products to URL/MUTUAL in the  Territory,  subject to the
terms and conditions set forth in this Agreement; and

     WHEREAS,  COLLAGENEX  is willing  to grant,  and  URL/MUTUAL  is willing to
receive, a sublicense under certain patents owned by The Research  Foundation of
State  University of New York, a non-profit  educational  corporation  organized
under the laws of New York state  ("FOUNDATION")  to enable  URL/MUTUAL  to sell
such  products in the  Territory to its  distributors  and other  customers  for
ultimate  sale  to  consumers  in  such  Territory,  subject  to the  terms  and
conditions set forth in this Agreement.

                                       1



     NOW,  THEREFORE,  in consideration of the mutual covenants,  agreements and
stipulations  set  forth  herein,  and  in the  Consent  Agreement  (as  defined
hereinafter),  Settlement Agreement (as defined hereinafter), and the Stipulated
Orders (as defined hereinafter),  the receipt and legal sufficiency of which are
hereby mutually acknowledged, COLLAGENEX and URL/MUTUAL hereby agree as follows:

ARTICLE I - DEFINITIONS

Section 1.1 Definitions. As used in this Agreement, the following terms, whether
used in the singular or plural, shall have the following meanings:

     "A/B Rated" shall mean  "therapeutically  equivalent"  as evaluated by FDA,
applying the definition of "therapeutically equivalent" set forth in the Preface
to the current  edition of the FDA  publication  "Approved  Drug  Products  With
Therapeutic Equivalence Evaluations" (the "Orange Book").

     "Adverse Event Reports" shall have the meaning set forth in Section 4.3.

     "Affiliate" shall mean any corporation,  firm, partnership or other entity,
whether  de jure or de facto,  which  controls,  is  controlled  by, or is under
common control with a Party.  For purposes of this  definition,  "control" shall
mean: (a) in the case of corporate entities,  direct or indirect ownership of at
least 50% of the stock or shares (or such lesser percentage which is the maximum
allowed  to be owned by a  foreign  corporation  in a  particular  jurisdiction)
entitled to vote for the election of directors or otherwise  having the power to
vote  on or  direct  the  affairs  of  such  Party;  and  (b)  in  the  case  of
non-corporate  entities,  direct or  indirect  ownership  of at least 50% of the
equity  interest  or the power to direct the  management  and  policies  of such
noncorporate entities.

     "Agreement" shall mean this License and Supply Agreement.

                                       2


     "AMP" shall mean Average  Manufacturer's Price for Periostat(R)as  reported
quarterly by  CollaGenex  to The  Secretary of the United  States  Department of
Heath and Human Services and/or the Heath Care Financing Administration pursuant
to Section 1927 of the Social  Security Act, 42  U.S.C.ss.1396s,  and/or Section
4401 of the Omnibus Budget Reconciliation Act of 1990, Pub. L. No. 101-508.

     "ANDA" shall mean an  Abbreviated  New Drug  Application  as defined in the
U.S.  Federal  Food,  Drug  and  Cosmetic  Act  and all  applicable  regulations
promulgated thereunder.

     "Applicable  Law" shall mean all applicable  provisions of all U.S. federal
or state statutes, laws, regulations,  ordinances,  decrees, orders,  decisions,
injunctions,  judgments,  and  permits and  licenses of or from U.S.  federal or
state governmental  authorities relating to the use or regulation of the subject
item.

     "Bottle"  shall  mean a bottle  containing  one  hundred  (100)  tablets of
COLLAGENEX  Supplied  Product.  "Box" shall mean a box of twelve  (12)  Bottles.
"Business Day" shall mean any day other than a day which is a Saturday, a Sunday
or federal bank holiday in the USA. "cGMP" shall mean current good manufacturing
practices  of the FDA,  as set  forth  in 21  C.F.R.  Parts  210 and 211 and all
Applicable Law.

     "Calendar  Quarter" shall mean each of the three (3) month periods during a
calendar year starting on the first of January, April, July and October.

     "Change of Control" shall mean,  with respect to the applicable  Party,  an
event where:

          (a) any  Third  Party  (alone or  together  with  such  Third  Party's
     Affiliates)  or "group" (as such term is defined under Section 13(d) of the
     Securities Exchange Act of 1934, as

                                       3



     amended) (i) acquires  beneficial  ownership of capital stock of such Party
     entitling the holder(s)  thereof to greater than fifty percent (50%) of the
     voting  power of the then  outstanding  capital  stock of such  Party  with
     respect to the  election  of  directors  of such Party,  or (ii)  otherwise
     actually  controls  or is in a  controlling  position  with  respect to the
     voting power of the then outstanding capital stock of such Party; or

          (b) such Party consummates a merger, consolidation,  reorganization or
     similar  transaction or series of related  transactions,  whether direct or
     indirect,  with  another  Third  Party,  alone or together  with such Third
     Party's Affiliates (the "Acquiring Corporation"),  in which: (i) such Party
     is not the surviving  corporation in such transaction,  (ii) the members of
     the Board of Directors of such Party prior to such  transaction  constitute
     less  than  one  half of the  members  of the  Board  of  Directors  of the
     Acquiring Corporation following such transaction,  (iii) greater than fifty
     percent (50%) of the voting power of the  outstanding  capital stock of the
     Acquiring  Corporation with respect to the election of directors  following
     such  transaction  is held by Third  Parties who were  shareholders  of the
     Acquiring  Corporation  prior to such  transaction,  or (iv) such  Party is
     otherwise effectively controlled by the Acquiring Corporation, or

          (c) such Party sells to any Third  Party(s)  (alone or  together  with
     such  Third  Party's  Affiliates)  in  one  or  more  related  transactions
     properties or assets representing  greater than fifty percent (50%) of: (i)
     such  Party's  consolidated  total  assets as  reflected on its most recent
     annual audited  financial  statements,  provided that, all or substantially
     all of the  properties  and assets  used in  connection  with such  Party's
     pharmaceutical  business  are  included in such  transaction(s),  (ii) such
     Party's  pharmaceutical   business,  or  (iii)  such  Party's  consolidated
     operating  income for the most recent  fiscal year as reflected on its most
     recent annual audited financial statements.

                                       4



     Notwithstanding  anything to the contrary in this  definition,  a Change of
Control  shall not be deemed to have  occurred with respect to a Party where any
acquisition, merger, consolidation,  reorganization, sale or similar transaction
occurs solely between such Party and any one or more of its Affiliates.

     "COLLAGENEX" shall have the meaning set forth in the Preamble.

     "COLLAGENEX  NDA" shall mean NDA No. 50,783 for  Periostat(R) 20 mg tablets
as approved by the FDA.

     "COLLAGENEX Party" shall have the meaning set forth in Section 8.2.

     "COLLAGENEX  Safety  Stock"  shall  have the  meaning  set forth in Section
4.2(c)(i).

     "COLLAGENEX  Supplied  Product"  shall mean all  doxycycline  hyclate 20 mg
immediate-release  tablets bearing the URL/MUTUAL imprint MP-573 and supplied to
URL/MUTUAL by COLLAGENEX  manufactured  pursuant to the COLLAGENEX NDA in effect
as of the Effective Date.

     "Commercial Quantities" shall mean such quantities of a Competitive Generic
Product that is A/B Rated to Periostat(R) [**] in the Territory.  URL/MUTUAL and
COLLAGENEX shall each use their respective  commercially  reasonable  efforts to
determine when Commercial Quantities of a Competitive Generic Product have first
been offered by a Third Party for prompt  delivery to such major retail  chains,
major pharmaceutical wholesalers, distributors, or managed care providers in the
Territory,  and the Party first  making  such  determination  shall  report such
information to the other Party as soon as practicable.

                                       5


     "Competitive  Generic  Entry" shall mean the first date,  subsequent to the
Effective  Date, on which the Parties  agree,  in good faith,  that  Competitive
Generic  Product has been shipped,  and remains  available for purchase for more
than [**]  consecutive  Business  Days  after  COLLAGENEX  is made aware of such
shipment  and/or  availability  for purchase,  in  Commercial  Quantities in the
Territory from,  directly or indirectly,  any Third Party, other than COLLAGENEX
Supplied Product which is supplied,  directly or indirectly, to such Third Party
by  URL/MUTUAL  or its  Affiliates;  provided,  however,  that if,  within  [**]
consecutive Business Days after COLLAGENEX is made aware of such shipment and/or
availability  for  purchase,  all  shipments  or sales are enjoined or otherwise
terminated, then the Competitive Generic Entry shall not have occurred.

     "Competitive  Generic  Offer  Period"  shall  mean each  period,  beginning
subsequent to the Effective Date, during which the Parties agree, in good faith,
that  Competitive  Generic  Product is  available  for  purchase  in  Commercial
Quantities in the Territory from, directly or indirectly, any Third Party, other
than COLLAGENEX Supplied Product which is supplied,  directly or indirectly,  to
such Third Party by  URL/MUTUAL or its  Affiliates;  provided,  however,  that a
Competitive Generic Offer Period shall be deemed to have terminated (i) upon the
date when such  shipments  or sales are enjoined or  otherwise  terminated,  if,
within [**]  consecutive  Business  Days after  COLLAGENEX is made aware of such
shipment  and/or  availability  for  purchase,  all such  shipments or sales are
enjoined or otherwise  terminated,  or (ii) upon the occurrence of a Competitive
Generic Entry.

     "Confidential  Information" shall mean any and all confidential information
regarding,  related to, or associated  with the Product,  the Patents,  and this
Agreement  (including the terms and conditions  hereof) that is disclosed by the
Disclosing Party to the Recipient as of and after

                                       6



the Execution Date. Provided,  however, that Confidential  Information shall not
include information which: (i) at the time of disclosure is in the public domain
or otherwise  publicly known;  (ii) after disclosure  becomes part of the public
domain or otherwise  publicly known,  except through breach of this Agreement or
the  Settlement  Agreement;  (iii) the Recipient can  demonstrate  by reasonable
proof was in its  possession  prior to the time of disclosure by the  Disclosing
Party hereunder, and was not acquired directly or indirectly from the Disclosing
Party;  or (iv) becomes  available  to Recipient  from a Third Party who did not
acquire such  information  directly or indirectly from the Disclosing  Party and
who is not otherwise  prohibited from disclosing such information.  In addition,
the terms and conditions of this Agreement shall be considered the  Confidential
Information of each Party.

     "Consent  Agreement"  shall mean that certain Consent  Agreement,  which is
dated as of the Execution  Date,  among  COLLAGENEX,  FOUNDATION and URL/MUTUAL,
pursuant to which FOUNDATION  consents to the sublicenses granted to URL/MUTUAL,
among other things.

     "Disclosing Party" shall have the meaning set forth in Section 6.3(a).

     "Effective  Date"  shall be the date upon  which the last of the  following
events shall have  occurred:  (a) receipt of the  Settlement  Payment by the law
firm of Hoffmann & Baron, LLP, as escrow agent; (b) execution of this Agreement;
(c) the Parties'  execution of the Stipulated Order in the New York action;  (d)
the Parties'  execution of the Stipulated Order in the Pennsylvania  action; (e)
Mutual's execution of the Stipulated Order in the FDA action; and (f) URL/MUTUAL
having received notice from First  DataBank,  Inc. that the COLLAGENEX  Supplied
Product is listed as a branded  product.  Until the Effective  Date, (x) none of
the Intellectual  Property Grants set forth in Article 2 shall become effective,
and (y) the Settlement Payment and the Stipulated

                                       7



Orders  shall be held in escrow by the law firm of  Hoffmann  & Baron,  LLP,  as
escrow agent, and (z) neither this Agreement nor the Settlement  Agreement shall
be effective in settling or compromising any of the disputes referenced therein.

     "Execution  Date"  shall be the date upon  which  this  Agreement  shall be
mutually executed by authorized  representatives of each Party, which date shall
be that which is set forth in the Preamble.

     "FDA" shall mean the U.S.  Food and Drug  Administration,  or any successor
agency  thereto.  "Firm  Order"  shall  have the  meaning  set forth in  Section
4.2(c)(ii).

     "Initial Quantity" shall mean [**] bottles of CollaGenex  Supplied Product,
each  containing  100  tablets,  and each  bottle  bearing  the  label of Mutual
Pharmaceutical Company, Inc.

     "Month's  Supply" or "Months'  Supply" shall mean, on any date,  1/6 of the
total  quantity of Periostat  and  COLLAGENEX  Supplied  Product sold during the
immediately preceding six (6) full calendar months, as reported by IMS Health.

     "NDA"  shall mean a New Drug  Application  as  defined in the U.S.  Federal
Food,  Drug,  and  Cosmetic  Act  and  all  applicable  regulations  promulgated
thereunder.

     "NDC" shall mean a National Drug Code number.

     "URL/MUTUAL" shall have the meaning set forth in the Preamble.

     "URL/MUTUAL  ANDA"  shall  mean  ANDA  No.  65-134,  unapproved  as of  the
Execution Date.

     "URL/MUTUAL Party" shall have the meaning set forth in Section 8.1(c).

                                       8



     "URL/MUTUAL  Product" shall mean doxycycline hyclate 20 mg tablets that are
made by or for URL/MUTUAL and that are the subject of the URL/MUTUAL ANDA if the
URL/MUTUAL ANDA is then-approved by the FDA.

     "URL/MUTUAL  Product  Action"  shall have the  meaning set forth in Section
5.9(c).

     "Patents"  shall mean U.S.  Patent No.  4,666,897 and Reissue Patent No. RE
34,656, and any reissues, reexaminations, and extensions of such patents.

     "Periostat(R)"  shall mean Periostat(R) brand of doxycycline  hyclate 20 mg
immediate release tablets approved under NDA No. 50,783.

     "Product" shall mean,  collectively or individually,  depending on context,
the following drug products:

          (a) any  doxycycline  hyclate 20 mg immediate  release tablet approved
     under the COLLAGENEX NDA;

          (b) any  doxycycline  hyclate 20 mg immediate  release tablet approved
     under the URL/MUTUAL ANDA or any other ANDA of URL/MUTUAL;

          (c) any doxycycline hyclate 20 mg immediate release tablet that is A/B
     Rated to  Periostat(R)  that shall have been  approved  under the ANDA of a
     Third Party ("Competitive Generic Product").

     "Product Action" shall have the meaning set forth in Section 5.6(b).

     "Product Claims" shall have the meaning set forth in Section 8.1(a).

     "Recipient" shall have the meaning set forth in Section 6.3(a).

     "Settlement Agreement" shall mean that certain Settlement Agreement,  which
is dated as of the Execution Date, among  COLLAGENEX,  FOUNDATION and URL/MUTUAL
regarding the civil action  pending in the United States  District Court for the
Eastern District of New York

                                       9



captioned CollaGenex Pharmaceuticals,  Inc. and The Research Foundation of State
University  of New  York v.  Mutual  Pharmaceutical  Company,  Inc.  and  United
Research Laboratories, Inc., Civil Action No. 03-3322 (CPS) (MDG) (the "New York
action"),  the civil action pending in the United States  District Court for the
Eastern District of Pennsylvania entitled Mutual Pharmaceutical Company, Inc. v.
CollaGenex   Pharmaceuticals,   Inc.,   Civil  Action  No.  03-4042  (TJS)  (the
"Pennsylvania  action"),  and the civil  action  pending  in the  United  States
District   Court   for   the   District   of   Columbia,   entitled   CollaGenex
Pharmaceuticals, Inc. v. Thompson et al., Civil Action No. 1:03-01405 (RMC) (the
"FDA action") (collectively, the "Pending Actions").

     "Settlement  Payment"  shall have the  meaning  defined in Section 2 of the
Settlement Agreement.

     "Stipulated Orders" shall mean, collectively,  (a) the Stipulated Order for
Judgment  in the New York  action,  substantially  in the form  attached  to the
Settlement  Agreement  as Exhibit A, (b) the  Stipulation  of  Dismissal  in the
Pennsylvania  action,  substantially  in the  form  attached  to the  Settlement
Agreement as Exhibit B, and (c) a proposed  Order  effecting  the  withdrawal of
Mutual's  intervention in the FDA action,  substantially in the form attached to
the Settlement Agreement as Exhibit C.

     "Supply  Term" shall mean the period  beginning on the  Effective  Date and
continuing until the earliest to occur of: (a) a Competitive  Generic Entry, (b)
the withdrawal of the COLLAGENEX NDA and/or the withdrawal of Periostat(R)  from
the market,  (c) a material  breach of this  agreement  by any Party that is not
cured within the time frames set forth in Section 7, Section 4.2(a)(i),  Section
4.2(c)(i),  Section  4.2(d)(ii),  Section 4.2(g) or Section 4.2(i),  (d) a final
determination  by a court of  competent  jurisdiction,  from which no appeal has
been taken or

                                       10



all appeals have been exhausted, that the Patents are invalid, or unenforceable,
or (e) the expiration date of the last of the Patents to expire (currently
anticipated by the Parties to be May 15, 2007) (the earliest of (a) through (e),
the "Supply Termination Date").

     "Term" shall have the meaning set forth in Section 7.1.

     "Territory" shall mean the United States of America and its territories and
possessions,  including  Puerto  Rico.  "Third  Party"  shall  mean any  person,
corporation,  partnership,  associations,  joint venture,  trust or other entity
other than  URL/MUTUAL or COLLAGENEX  or  FOUNDATION,  or an Affiliate of any of
them.

     "URL/MUTUAL  Weighted  Average  Selling  Price" shall mean,  on the date of
delivery to URL/MUTUAL of COLLAGENEX  Supplied Product,  the weighted average of
the prices at which  URL/MUTUAL sold any COLLAGENEX  Supplied Product during the
fifteen (15) Business Days immediately preceding such date.

     Section 1.2 The word "including" or any variation  thereof means "including
without limitation" or any variation thereof and shall not be construed to limit
any  general  statement  which it follows to the  specific  or similar  items or
matters immediately following it.

ARTICLE II - INTELLECTUAL PROPERTY GRANTS

     Section 2.1  Intellectual  Property  Grant for Sale of CollaGenex  Supplied
Product.

          (a) (i) Effective as of the Effective  Date,  and subject to the terms
     and conditions of this Agreement,  COLLAGENEX  hereby grants to URL/MUTUAL,
     for the  period  comprising  the  Supply  Term,  a sole,  non-transferable,
     non-sublicenseable sub-license under the Patents in the Territory, to offer
     for sale and sell COLLAGENEX Supplied Product to URL/MUTUAL's  distributors
     and other customers in the Territory for the purpose of ultimate

                                       11



     sale  by  such  distributors  and  other  customers  to  consumers  in  the
     Territory.  (ii) For the  avoidance  of doubt,  the Parties  agree that the
     foregoing  right of selling  COLLAGENEX  Supplied  Product in the Territory
     shall  permit  URL/MUTUAL  to  sell  COLLAGENEX  Supplied  Product  to  its
     distributors  and other  customers for the purpose of ultimate sale by such
     distributors  and other  customer to consumers in the Territory  during the
     Supply Term,  which  activities  would, but for the license herein granted,
     infringe one or more of the Patents.  URL/MUTUAL shall have the right under
     this Agreement  during the Supply Term to sell COLLAGENEX  Supplied Product
     for any  indications in the COLLAGENEX NDA. (iii) The foregoing grant shall
     only be in effect for the  Supply  Term and shall  automatically  terminate
     upon the Supply Termination Date.  URL/MUTUAL may not deliver or tender (or
     cause to be delivered or tendered) any COLLAGENEX  Supplied Product outside
     of the Territory. URL/MUTUAL shall not sell any COLLAGENEX Supplied Product
     to a  purchaser  if  URL/MUTUAL  knows or has reason to  believe  that such
     purchaser  intends to remove those  COLLAGENEX  Supplied  Products from the
     Territory.

          (b) The Parties hereby agree and acknowledge that the use of "sole" in
     the  foregoing  paragraph  shall  mean  that  neither  COLLAGENEX,  nor its
     Affiliates,  shall grant any Third Party  (expressly or by  implication)  a
     sublicense  under  the  Patents  to sell or  offer  for  sale  any  Product
     manufactured  pursuant to the CollaGenex NDA in generic trade dress for the
     purpose of ultimate  sale to consumers in the  Territory  during the Supply
     Term; for the avoidance of doubt,  the Parties agree that  COLLAGENEX,  and
     its Affiliates, retain and reserve all rights to make, have made, use, sell
     to its distributors and other customers, offer for sale to its distributors
     and other customers in the Territory, Periostat(R) or any other doxycycline
     hyclate product during the term of the Agreement.

                                       12



     Section 2.2 Intellectual Property Grant Upon Competitive Generic Entry

          (a)  Effective  as of the  termination  of the  Supply  Term  due to a
     Competitive  Generic Entry, and subject to the terms and conditions of this
     Agreement,   COLLAGENEX  hereby  grants  to  URL/MUTUAL,  a  non-exclusive,
     fully-paid,  non-transferable,  non-sublicenseable  sub-license  under  the
     Patents  in the  Territory,  to make,  have  made,  offer for sale and sell
     URL/MUTUAL Product (made by URL/MUTUAL or its Affiliates),  and to offer to
     sell and sell COLLAGENEX Supplied Product, to URL/MUTUAL's distributors and
     other  customers in the  Territory for the purpose of ultimate sale by such
     distributors  and  other  customer  to  consumers  in  the  Territory.  The
     foregoing  license  grant shall remain in effect for the entire life of the
     Patents.

     Section 2.3 Intellectual Property Grant for Launch of URL/MUTUAL Product

          (a) Effective upon URL/MUTUAL's termination of the Agreement, pursuant
     to Section  7.2(a),  on account of a material  breach by  COLLAGENEX of its
     supply  obligations set forth in Article IV of this  Agreement,  unless the
     provisions  of Section 2.2 of this  Agreement  shall have become  effective
     earlier,  and  subject  to the  terms  and  conditions  of this  Agreement,
     COLLAGENEX  hereby  grants  to  URL/MUTUAL  a  non-exclusive,   fully-paid,
     non-transferable,  non-sublicenseable  sub-license under the Patents in the
     Territory,  to make, have made, offer for sale and sell URL/MUTUAL  Product
     (made  by  URL/MUTUAL  or its  Affiliates),  and to  offer to sell and sell
     COLLAGENEX  Supplied  Product,  to  URL/MUTUAL's   distributors  and  other
     customers  in the  Territory  for  the  purpose  of  ultimate  sale by such
     distributors  and  other  customers  to  consumers  in the  Territory.  The
     foregoing  license  grant shall remain in effect for the entire life of the
     Patents.

                                       13



     Section 2.4 [Reserved for Future Use].

     Section 2.5 Retained Rights.

          (a) [Reserved for Future Use].

          (b) Any  intellectual  property rights of COLLAGENEX or Foundation not
     expressly  granted to  URL/MUTUAL  under the  provisions of this Article II
     shall be retained by COLLAGENEX or Foundation, respectively.

          (c) In no event shall any of the licenses  granted  under the Patents,
     pursuant to this Article 2, be deemed to extend past the  expiration of the
     Patents  or  the  earlier  final  determination  by a  court  of  competent
     jurisdiction,  from which no appeal has been taken or all appeals have been
     exhausted, adjudicating the Patents to be invalid or unenforceable.

ARTICLE III - PAYMENTS AND INVENTORY COMPETITIVE PRICING ADJUSTMENTS

     Section 3.1 Price to URL/MUTUAL of CollaGenex Supplied Product

          (a) Initial Quantity.  CollaGenex shall supply the Initial Quantity of
     CollaGenex  Supplied  Product  to  URL/Mutual  at  a  price  equal  to  the
     following:  [**]% of CollaGenex's  reported AMP for a bottle of 100 tablets
     of  Periostat(R)  [**] for the first [**]  Bottles (the  "Initial  Quantity
     Price"),  plus  CollaGenex  shall supply the remaining  [**] Bottles of the
     Initial  Quantity  at no charge to  URL/MUTUAL  as a  one-time  promotional
     allowance.  For the avoidance of doubt,  CollaGenex represents that its AMP
     for a bottle of 100  tablets  of  Periostat(R)  [**] was $[**] per  bottle.
     Accordingly,  URL/Mutual  shall pay  CollaGenex  $[**] per  Bottle  ([**] x
     $[**]) for the first [**] Bottles of the Initial Quantity.

          Payment  terms  with  respect  to the  Initial  Quantity  shall  be as
     follows:

                                       14


          1.   Net,  [**]  days for the  first  one-third  (1/3) of the  Initial
               Quantity Price;

          2.   Net,  [**]  days for the  next  one-third  (1/3)  of the  Initial
               Quantity  Price;  and

          3.   Net,  [**]  days for the  final  one-third  (1/3) of the  Initial
               Quantity Price.

     All such payment time periods  shall  commence  from the date of receipt of
the [**] Bottle of the Initial Quantity by URL/MUTUAL.

          (b) Subsequent  Quantities.  For all quantities of CollaGenex Supplied
     Product shipped to URL/Mutual subsequent to the Initial Quantity, the price
     of the CollaGenex  Supplied Product shall be determined as of the date that
     the  relevant  Firm Order is placed by  URL/MUTUAL.  The price and  payment
     terms of all such shipments shall be calculated as follows:

               1.   Except as provided with respect to the Initial  Quantity and
                    in Section  3.1(b)(3),  below,  for all Firm  Orders  placed
                    during the Calendar year 2004,  the purchase  price shall be
                    [**]%  of the  average  of  COLLAGENEX's  reported  AMP [**]
                    immediately preceding the date the Firm Order was placed,

               2.   Except as provided in Section 3.1(b)(3), below, for all Firm
                    Orders  placed   during   calendar  year  2005  through  the
                    remainder  of the Supply Term,  the purchase  price shall be
                    [**]% of  COLLAGENEX's  reported  AMP for  [**]  immediately
                    preceding the date the Firm Order was placed.

               3.   Notwithstanding  the  foregoing   provisions  set  forth  in
                    Sections  3.1(b)(1) and (2), in the event that  COLLAGENEX's
                    reported

                                       15



                    Wholesale  Acquisition  Cost ("WAC") for  Periostat(R) 20 mg
                    immediate  release  tablets  decreases,  then  the  price of
                    URL/MUTUAL's  purchases  from the  date of the WAC  decrease
                    back to [**]  shall  be  reduced  retroactively  by the same
                    percentage   as  the  decline  in  reported  WAC.  Any  such
                    retroactive price  adjustments,  and any payments in respect
                    of the Competitive  Pricing Adjustment  provisions set forth
                    in Section 3.2,  below,  shall be taken by URL/MUTUAL in the
                    first instance as setoff against  amounts  otherwise due and
                    owing to COLLAGENEX in respect of the purchase of COLLAGENEX
                    Supplied  Product.  In the event that such  amounts due from
                    COLLAGENEX to URL/MUTUAL  exceed  URL/MUTUAL's  then-current
                    financial  obligations to COLLAGENEX,  COLLAGENEX shall make
                    the  foregoing  payments  within  [**]  days of their  being
                    invoiced by URL/MUTUAL.

     In addition, if there is a Competitive Generic Entry,  URL/MUTUAL shall, if
requested by  COLLAGENEX,  accept  delivery of all COLLAGENEX  Supplied  Product
subject to Firm Orders which is already manufactured but not yet delivered,  and
shall purchase and accept delivery of all COLLAGENEX  Supplied  Product which is
subject  to  non-cancellable  orders  placed  with  COLLAGENEX's   manufacturers
(provided, however, that COLLAGENEX shall use commercially reasonable efforts to
try to cancel such  orders) and up to [**]  Supply of the  available  COLLAGENEX
Safety Stock, in each case at a price equal to the lesser

                                       16



of (A) $[**] per bottle of 100  tablets  or (B) $[**]  less than the  applicable
URL/MUTUAL  Weighted  Average  Selling  Price.   URL/MUTUAL  shall  request  any
adjustment  in price  pursuant to this Section  3.1(b)(3)  by providing  written
notification  to COLLAGENEX,  and COLLAGENEX  shall have the right to review all
materials relied upon by URL/MUTUAL in calculating the deduction. URL/MUTUAL and
COLLAGENEX  agree that all claims or disputes  asserted by either party  against
the other  arising from or relating to the  operation of this Section  3.1(b)(3)
shall be resolved in accordance with Section 9.7A.

               4.   For all COLLAGENEX  Supplied  Product other than the Initial
                    Quantity,  payment terms shall be Net, [**] days,  with such
                    payment  term to  commence  from the date of  receipt of the
                    complete quantity set forth in the applicable Firm Order.

     Section 3.2 Competitive Pricing Adjustment.

          (a) [Reserved for Future Use.]

          (b) The Parties also recognize that,  during any  Competitive  Generic
     Offer Period and/or upon or after a Competitive Generic Entry, inventory of
     COLLAGENEX   Supplied   Product  that  is  in  the  retail  and   wholesale
     distribution  channel  and  URL/MUTUAL's  inventory  may  undergo  multiple
     devaluations if the Competitive  Generic Product is priced less expensively
     than URL/MUTUAL's  selling price of the COLLAGENEX  Supplied  Product.  The
     Parties  therefore  agree that COLLAGENEX  will provide  retroactive  price
     adjustments to URL/MUTUAL in respect of such devaluations as follows:

               1.   On the first day of any  Competitive  Generic  Offer Period,
                    URL/MUTUAL   shall   document   the  number  of  Bottles  of
                    COLLAGENEX   Supplied  Product  in  the  inventory  of  each
                    URL/MUTUAL customer on

                                       17




                    such  day  (the  lesser  of (A)  such  aggregate  number  of
                    Bottles,  or (B) [**]  Bottles,  the  "Customer  Bottles  at
                    Risk").  Also, on the first day of any  Competitive  Generic
                    Offer  Period,  URL/MUTUAL  shall  document  the  number  of
                    Bottles  of  COLLAGENEX  Supplied  Product  in  URL/MUTUAL's
                    inventory  (the "Day 1  URL/MUTUAL  Inventory").  URL/MUTUAL
                    shall promptly provide such documentation to COLLAGENEX.

               2.   "URL/MUTUAL  Bottles  at Risk"  means (a) with  respect to a
                    Competitive  Generic Offer Period which is terminated  other
                    than by a Competitive  Generic Entry,  the lesser of (i) the
                    COLLAGENEX Supplied Product in URL/MUTUAL's  inventory which
                    URL/MUTUAL is  reasonably  required to ship to its customers
                    during such  period or (ii) the  URL/MUTUAL  Inventory  Risk
                    Limit,  and (b) with respect to a period which starts with a
                    Competitive Generic Offer Period and continues directly into
                    a  Competitive   Generic   Entry  without  any   intervening
                    termination of such  Competitive  Generic Offer Period (such
                    period,  as  measured  starting  on the  first  day of  such
                    Competitive  Generic Offer Period and  continuing  until the
                    termination of this  Agreement or thereafter,  if applicable
                    in accordance  with Section  7.3(d),  the "Full  Competitive
                    Generic  Adjustment  Period"),  the lesser of (i) the sum of
                    (A) the Day 1 URL/MUTUAL  Inventory  and (B) the quantity of
                    COLLAGENEX Supplied Product shipped by COLLAGENEX to

                                       18



                    URL/MUTUAL  during the relevant  Competitive  Generic  Offer
                    Period and (ii) the URL/MUTUAL Inventory Risk Limit.

               3.   "Maximum Credit" means, with respect to either a Competitive
                    Generic  Offer  Period which is  terminated  other than by a
                    Competitive  Generic  Entry  or a Full  Competitive  Generic
                    Adjustment Period, the difference between (a) the product of
                    (I) [**] and  (II)  the  [**] and  (III)  the sum of (A) the
                    Customer  Bottles at Risk and (B) the applicable  URL/MUTUAL
                    Bottles at Risk,  and (b) the  product of (I) $[**] and (II)
                    the  sum of (A) the  Customer  Bottles  at Risk  and (B) the
                    applicable URL/MUTUAL Bottles at Risk.

               4.   During  a   Competitive   Generic   Offer   Period  or  Full
                    Competitive  Generic  Adjustment  Period,  COLLAGENEX  shall
                    provide  URL/MUTUAL  with  credits or  rebates  equal to the
                    amount of any retroactive price adjustment,  rebate or shelf
                    stock  adjustment  requested by  URL/MUTUAL's  customers and
                    actually  provided by URL/MUTUAL to  URL/MUTUAL's  customers
                    with respect to such period for COLLAGENEX  Supplied Product
                    on the shelves of URL/MUTUAL's customers during such period,
                    which amount shall in no event exceed,  in the aggregate for
                    such period, the applicable Maximum Credit.

               5.   During  a   Competitive   Generic   Offer   Period  or  Full
                    Competitive  Generic  Adjustment  Period,  COLLAGENEX  shall
                    provide rebates and/or credits to URL/MUTUAL so as to reduce
                    the cost to URL/MUTUAL for the applicable URL/MUTUAL Bottles
                    at Risk down to a level equal to the

                                       19



                    greater  of (A) [**] or (B)  $[**] per  Bottle.  "URL/MUTUAL
                    Inventory  Risk Limit" means,  as of any date  following the
                    date  on  which  the  amount  of  the  Initial  Quantity  in
                    URL/MUTUAL's warehouse has been reduced to less than one (1)
                    Month's Supply due to shipments of the  COLLAGENEX  Supplied
                    Product to URL/MUTUAL's distributors or other customers, one
                    (1) Month's Supply of COLLAGENEX Supplied Product, or, prior
                    to such date, any amount of the Initial Quantity actually in
                    URL/MUTUAL's warehouse.

               6.   For the sake of  clarity,  the Parties  agree  that,  in the
                    event a  Competitive  Generic  Offer  Period  is  terminated
                    within [**]  consecutive  Business Days after  COLLAGENEX is
                    made  aware  of  such  shipment  and/or   availability   for
                    purchase,  then the price adjustments provisions in Sections
                    3.2(b)(4) and 3.2(b)(5) shall apply only to those claims for
                    retroactive   price   adjustment,   rebate  or  shelf  stock
                    adjustment requested by URL/MUTUAL's customers, and actually
                    provided  by  URL/MUTUAL  to  URL/MUTUAL's  customers,   for
                    Customer  Bottles at Risk which  claims arose as a result of
                    such  Competitive  Generic Offer Period and which claims are
                    reasonably  verifiable,  and no price  adjustments  shall be
                    given  with  respect to any  claims  for  retroactive  price
                    adjustment,  rebate or shelf stock  adjustment  requested by
                    URL/MUTUAL's customers which arose other than as a result of
                    such Competitive Generic Offer Period, unless


                                       20


                    there is a subsequent  Competitive  Generic Offer Period, in
                    which case the provisions of this Section 3.2(b) shall again
                    apply.

               7.   To  ensure  that the  price  adjustment  provisions  in this
                    Section 3.2 are applied to no more than the Customer Bottles
                    at Risk and  URL/MUTUAL  Bottles at Risk,  URL/MUTUAL  shall
                    provide to  COLLAGENEX,  during a Full  Competitive  Generic
                    Adjustment Period,  monthly reports within [**]Business Days
                    after the end of each calendar  month,  in the form attached
                    as Exhibit A,  specifying for each  URL/MUTUAL  customer (a)
                    the  quantity  of  COLLAGENEX   Supplied   Product  in  such
                    customer's  inventory,  based on that customer's most recent
                    request(s) for retroactive price adjustment, rebate or shelf
                    stock  adjustment  which  was  actually  paid by  URL/MUTUAL
                    (which, for the sake of clarity,  the Parties agree may have
                    been  requested  by such  customer  during a prior  calendar
                    month but not  requested  by such  customer  and/or  paid by
                    URL/MUTUAL  until the calendar month for which the report is
                    being  delivered),  along  with the  price(s)  at which  the
                    COLLAGENEX Supplied Product in such customer's inventory was
                    sold  to  such  customer,  (b) the  quantity  of  COLLAGENEX
                    Supplied  Product shipped to such customer during such month
                    and the  price  at  which  such  quantity  was  sold to such
                    customer,  and (c)  URL/MUTUAL's  conclusion of whether such
                    customer's  request(s)  for  retroactive  price  adjustment,
                    rebate or shelf  stock  adjustment  are  correct and whether
                    such  request(s)  are  subject  to  credits  or  rebates  to
                    URL/MUTUAL from COLLAGENEX pursuant to this Section

                                       21




                    3.2(b).  In  addition,  URL/MUTUAL  shall  include with such
                    report  a  count  of the  number  of  Bottles  which  remain
                    eligible  for  adjustment  pursuant to Section  3.2(b)(4) or
                    3.2(b)(5) at the end of such calendar month.

               8.   In the event  that a  Competitive  Generic  Offer  Period is
                    terminated  within  [**]  consecutive  Business  Days  after
                    COLLAGENEX   is  made   aware   of  such   shipment   and/or
                    availability  for  purchase,  then  the  maximum  amount  of
                    credits or rebates available to URL/MUTUAL in the event of a
                    subsequent  Competitive  Generic Offer Period shall be reset
                    at the full amount of the Maximum Credit, and the amounts of
                    credits or rebates  previously  provided  by  COLLAGENEX  to
                    URL/MUTUAL  shall not be applied  toward the Maximum  Credit
                    available  to  URL/MUTUAL  in  connection   with  subsequent
                    Competitive   Generic  Offer  Periods  or  Full  Competitive
                    Generic Adjustment Period.

               9.   In order to permit the tracking of compliance with the price
                    adjustment provisions of this Section 3.5(b),  following the
                    Supply Term  URL/MUTUAL  shall ship to its  distributors  or
                    other  customers  any  COLLAGENEX  Supplied  Product  in its
                    inventory   before  it  ships  any  other   Product  to  its
                    distributors or other customers.

          (c)  URL/MUTUAL  shall  request any  adjustment  in price  pursuant to
     Section  3.2(b) by providing  written  notification  and  documentation  to
     COLLAGENEX,  which  shall  be in the  form of  written  documentation  from
     URL/MUTUAL's  customers  requesting  such  retroactive  price  adjustments,
     rebates  or shelf  stock  adjustments.  COLLAGENEX  shall have the right to
     review  all  materials   relied  upon  by  URL/MUTUAL  in  calculating  the
     deduction.



                                       22



     URL/MUTUAL  hereby  consents to COLLAGENEX  seeking  wholesale  "Sales Out"
     reports from URL/MUTUAL's  customers,  at COLLAGENEX's expense.  URL/MUTUAL
     makes no  representation  or warranty that  COLLAGENEX  will be able to get
     such wholesale "Sales Out" reports from such URL/MUTUAL customers.

     Section  3.3  Method of  Payment.  URL/MUTUAL  shall make all  payments  to
COLLAGENEX,  and  COLLAGENEX  shall make all payments to  URL/MUTUAL,  in lawful
money of the United  States by check in  accordance  with Section 9.9  (provided
that any payment  made by check must be received  by the  receiving  Party on or
before  the  date  such  payment  is due  pursuant  to  this  Agreement),  or by
electronic  transfer to the  following  account or to an account  designated  in
writing  in  accordance   with  Section  9.9  by   COLLAGENEX   or   URL/MUTUAL,
respectively,  or by such  other  means  as may be  agreed  in  advance  by both
Parties.

         Payments To CollaGenex:
         ----------------------

         RECEIVING BANK
         NAME AND ADDRESS: Silicon Valley Bank
                           3003 Tasman Drive
                           Santa Clara, CA 95054

         RECEIVING BANK
         ROUTING #:        121140399

         ACCOUNT #:        [**]

         ACCOUNT NAME:     CollaGenex Pharmaceuticals, Inc.

         Payments To Mutual:
         ------------------

         RECEIVING BANK
         NAME:             Wachovia Bank, NA

         RECEIVING BANK
         ROUTING #:        031201467

         ACCOUNT #:        [**]

                                       23



        ACCOUNT NAME: Mutual Pharmaceutical Company, Inc.

     Section  3.4 Taxes.  All taxes and duties  (and any  related  penalties  or
interest)  imposed  on any  payment by  URL/MUTUAL  to  COLLAGENEX  shall be the
responsibility of URL/MUTUAL,  excluding any taxes and duties imposed on the net
income of COLLAGENEX.  URL/MUTUAL and COLLAGENEX shall bear sole  responsibility
for  payment  of  compensation  to  their  respective  personnel,  employees  or
subcontractors and for all employment taxes and withholding with respect to such
compensation pursuant to Applicable Law.

     Section 3.5  Interest on Overdue  Amounts.  All  payments not paid when due
shall bear interest at a rate which is the lesser of: (a) 12% per annum;  or (b)
the maximum lawful interest rate permitted  under  applicable law. Such interest
shall accrue on the balance of unpaid amounts from time to time outstanding from
the date on which  portions of such amounts  become due and owing until  payment
thereof in full.

     Section 3.6 Sale Price. URL/MUTUAL, in its sole discretion, shall determine
the sales price of the  COLLAGENEX  Supplied  Products sold by URL/MUTUAL to its
customers. ARTICLE IV - SUPPLY

     Section 4.1 Supply Term.

          (a)  COLLAGENEX  shall  supply  URL/MUTUAL  with [**]  Bottles  of the
     Initial Quantity of CollaGenex Supplied Product (the "Initial Shipment") on
     or before the later of (i) April 8, 2004 and (ii) [**]  Business Days after
     the Effective Date (the "Initial  Shipment Date").  COLLAGENEX shall supply
     URL/MUTUAL with [**] Bottles of the Initial Quantity of CollaGenex Supplied
     Product (the "Second Shipment") on or before the later of (i) [**] and (ii)
     [**] Business Days after the Effective Date (the "Second  Shipment  Date").
     COLLAGENEX understands that URL/Mutual expects to begin to

                                       24



          supply   COLLAGENEX   Supplied   Product  for  sale  to   URL/MUTUAL's
          distributors  and other  customers  in the  Territory  pursuant to the
          provisions  of this  Agreement  on or about  April 8, 2004;  provided,
          however,  that if the  Effective  Date does not occur  before April 8,
          2004,  then  COLLAGENEX  shall  not be  required  to ship the  Initial
          Quantity  until [**] days after the Effective  Date. The provisions of
          Section  4.2(d)(ii)  shall apply to any delays in the shipments of the
          Initial  Shipment  or the Second  Shipment.  URL/MUTUAL  shall use its
          commercially reasonable efforts to sell COLLAGENEX Supplied Product to
          its  distributors  and other  customers in the Territory,  which sales
          shall be solely pursuant to the terms hereof during the Supply Term.

          (b)  Upon  the  written  request  of  URL/MUTUAL  in  the  event  of a
     Competitive  Generic Entry, the Supply Term may be extended up to [**] days
     beyond  the  otherwise  applicable  Supply  Termination  Date in order  for
     URL/MUTUAL to engage in the necessary ordering and production activities to
     support the launch of the URL/MUTUAL  Product provided that neither URL nor
     Mutual is, at the time of such  request,  in material  breach of any of its
     obligations  under the terms of the  Agreement and provided that the Supply
     Term shall, under no circumstances, be deemed to extend past the expiration
     of the Patents or the earlier final  determination  by a court of competent
     jurisdiction,  from which no appeal has been taken or all appeals have been
     exhausted, adjudicating the Patents to be invalid or unenforceable.

          (c) The Parties agree that URL/MUTUAL shall not be obligated to accept
     any COLLAGENEX  Supplied Product for which the expiration date is less than
     [**] months after the date shipped by COLLAGENEX.

                                       25



     Section 4.2 Supply Terms.

          (a) Sole Supply.

               (i) URL/MUTUAL  hereby agrees and acknowledges  that,  during the
          Supply  Term,  it shall  receive  one  hundred  percent  (100%) of its
          requirements  of Product for sale in the Territory from COLLAGENEX (or
          its  Affiliates)  pursuant to this  Agreement.  For the  avoidance  of
          doubt,  URL/MUTUAL  hereby agrees and  acknowledges  that,  during the
          Supply Term, it shall not repackage  COLLAGENEX Supplied Product,  nor
          any  URL/MUTUAL  Product  or other  product,  as a generic  version of
          Periostat nor as a URL/MUTUAL branded version of a Product. Any breach
          by  URL/MUTUAL  of any of its  obligations  pursuant  to this  Section
          4.2(a)(i) shall be a material breach of this Agreement, and COLLAGENEX
          shall  have the  right to  terminate  this  Agreement  immediately  by
          providing written notice to URL/MUTUAL of such breach.

               (ii) Further,  URL/MUTUAL  hereby agrees and acknowledges that it
          shall not market,  sell or  pre-book  orders for  COLLAGENEX  Supplied
          Product prior to the issuance of the Formal Press Release as described
          in Section 6.4.

               (iii) COLLAGENEX  hereby agrees and acknowledges that it (and its
          Affiliates) shall not sell or supply Product manufactured  pursuant to
          the  COLLAGENEX  NDA in  generic  trade  dress to any Third  Party for
          distribution or sale in the Territory during the Supply Term.

          (b)  Specifications  and Supply.  COLLAGENEX  hereby warrants that all
     COLLAGENEX  Supplied  Product shall be in fully finished form,  labeled and
     packaged for supply to the ultimate  consumer.  COLLAGENEX further warrants
     that all COLLAGENEX  Supplied  Product shall be white or off-white in color
     and embossed with the URL/MUTUAL

                                       26



          imprint as has been provided to COLLAGENEX by URL/MUTUAL  and mutually
          agreed by the Parties.

          (c) Ordering/Safety Stock.

               (i)  Beginning  [**] and  continuing  through  the earlier of the
          Supply Termination Date or [**], COLLAGENEX shall maintain, at its own
          risk and  expense,  [**] Supply of  COLLAGENEX  Supplied  Product (the
          "COLLAGENEX Safety Stock"); provided,  however, that URL/MUTUAL agrees
          and  acknowledges  that the  COLLAGENEX  Safety Stock shall be reduced
          from  time  to  time  below  [**]  Supply  by Firm  Orders  placed  by
          URL/MUTUAL in accordance with Section  4.2(c)(ii) and provided further
          that  COLLAGENEX  shall only be obligated to place orders to replenish
          such  COLLAGENEX  Safety Stock once such  COLLAGENEX  Safety Stock has
          fallen  to a  [**]  Supply,  although  COLLAGENEX  may,  in  its  sole
          discretion,  replenish such COLLAGENEX Safety Stock sooner and may, in
          its sole  discretion,  maintain  more than [**]  Supply of  COLLAGENEX
          Supplied Product as COLLAGENEX Safety Stock.  COLLAGENEX's  failure to
          reorder  COLLAGENEX  Supplied  Product from its suppliers on or before
          the date on which such COLLAGENEX  Safety Stock falls to a [**] Supply
          shall constitute a material breach of this Agreement.  In the event of
          such failure,  URL/MUTUAL shall have the right, as its sole remedy and
          COLLAGENEX's  exclusive  liability,  to  terminate  the Supply Term if
          COLLAGENEX  does not cure such failure within [**] Business Days after
          COLLAGENEX's  receipt of URL/MUTUAL's  written notice of such failure.
          COLLAGENEX shall, upon the reasonable  request of URL/MUTUAL from time
          to time, inform URL/MUTUAL with respect to the then-current  levels of
          COLLAGENEX  Safety Stock.  The Parties agree and acknowledge  that, as
          long as COLLAGENEX places orders, for

                                       27



          delivery to  COLLAGENEX  within [**]  calendar  days after  COLLAGENEX
          Safety Stock has fallen to a [**] Supply,  to replenish the COLLAGENEX
          Safety  Stock to the level of a total of [**]  Supply when (or before)
          such  COLLAGENEX  Safety  Stock  has  fallen  to a [**]  Supply,  then
          COLLAGENEX  shall not be in breach of this  Agreement  if the level of
          Safety Stock falls below [**] Supply.

               (ii)  Starting  on the  later of [**] or the  date on  which  the
          amount of the Initial  Quantity  in  URL/MUTUAL's  warehouse  has been
          reduced to less than [**] Supply due to  shipments  of the  COLLAGENEX
          Supplied Product to URL/MUTUAL's  distributors or other customers, and
          thereafter from time to time during the Supply Term,  URL/MUTUAL shall
          have the right to place binding  purchase orders for quantities of the
          COLLAGENEX  Safety  Stock  for  shipment  by  COLLAGENEX  within  [**]
          Business Days, and delivery to URL/MUTUAL's warehouse in Philadelphia,
          Pennsylvania  within  [**]  Business  Days  after the order is shipped
          (each,  a "Firm  Order"),  provided,  however,  that,  as of any date,
          URL/MUTUAL shall order no more than the quantities then required to be
          maintained  as  COLLAGENEX   Safety  Stock  as  described  in  Section
          4.2(c)(i)  and provided that  URL/MUTUAL  shall not place orders which
          are to be shipped by COLLAGENEX more than [**] Business Days after the
          date on  which  URL/MUTUAL  placed  the  order.  URL/MUTUAL  shall  be
          required  to  accept  and pay for  [**]%  of all  COLLAGENEX  Supplied
          Product  described  in a Firm  Order.  URL/MUTUAL  shall not place any
          single Firm Order for more than [**] Supply;  and, if URL/MUTUAL  does
          place a single Firm Order for more than [**] Supply,  COLLAGENEX shall
          not accept such Firm Order  without  getting  additional  confirmation
          from URL/MUTUAL. In the event that a force majeure condition described
          in Section 9.3 prevents CollaGenex's suppliers from supplying

                                       28



          COLLAGENEX   with   sufficient   Product  to  permit   COLLAGENEX   to
          simultaneously  fulfill its  obligations  to maintain  Safety Stock in
          accordance with Section  4.2(c)(i) and obtain  sufficient  quantity of
          Product for COLLAGENEX's own sales,  COLLAGENEX shall use commercially
          reasonable  efforts to reallocate  the orders placed with the affected
          supplier(s)  to allocate  the amount of Product able to be produced by
          such supplier(s) to each of COLLAGENEX and URL/Mutual in proportion to
          the sales of Product made by COLLAGENEX and URL/MUTUAL,  respectively,
          during the  calendar  month  immediately  preceding  the start of such
          force majeure  condition;  provided,  however,  that in no event shall
          COLLAGENEX be obligated to provide  URL/MUTUAL with Product  imprinted
          with the COLLAGENEX imprint.

               (iii) Notwithstanding anything to the contrary, URL/MUTUAL's Firm
          Orders for COLLAGENEX  Supplied  Product from  COLLAGENEX  shall be in
          full batch  quantities  of [**] Boxes  (equivalent  to [**] Bottles or
          [**]  tablets) or full  multiples  thereof.  Except with  respect to a
          return  pursuant to Section  4.2(h),  URL/MUTUAL  may not return,  nor
          receive a refund for,  COLLAGENEX  Supplied  Product to COLLAGENEX for
          any reason.

               (iv) Upon the  termination  of the Supply  Term due to a material
          breach of this  Agreement by  COLLAGENEX  that is not cured within the
          time  frames  set  forth in  Section  7,  Section  4.2(c)(i),  Section
          4.2(d)(ii) or Section 4.2(g), as applicable,  or a final determination
          by a court of  competent  jurisdiction,  from which no appeal has been
          taken or all appeals have been exhausted,  adjudicating the Patents to
          be  invalid  or  unenforceable,  URL/MUTUAL  shall,  if  requested  by
          COLLAGENEX, accept delivery of all COLLAGENEX Supplied Product subject
          to Firm Orders which is already  manufactured  but not yet  delivered,
          and purchase and accept  delivery of all COLLAGENEX  Supplied  Product
          which is subject to

                                       29



          non-cancellable   orders   placed  with   COLLAGENEX's   manufacturers
          (provided,  however, that COLLAGENEX shall use commercially reasonable
          efforts to try to cancel  such  orders)  and up to [**]  Supply of the
          available  COLLAGENEX  Safety Stock,  in each case at a price equal to
          the  lesser  of (A)  $[**]  per  Bottle  or (B)  $[**]  less  than the
          applicable URL/MUTUAL Weighted Average Selling Price.

               (v)  URL/MUTUAL  shall  provide  COLLAGENEX  with the artwork for
          tooling for the manufacturing  process and for all labels,  packaging,
          and product inserts,  which shall be subject to the mutual approval of
          the Parties  and, to the extent so  approved,  each Party (the "Non-TM
          Party") is permitted to use the trademarks of the other Party (the "TM
          Party") solely to reproduce and  distribute the labels,  packaging and
          product  inserts with the  COLLAGENEX  Supplied  Product.  All rights,
          including  goodwill,  based on a Non-TM  Party's use of the TM Party's
          trademark  shall  inure to the  benefit  of such TM Party.  The Non-TM
          Party shall (a) use the TM Party's  trademark in  compliance  with all
          Applicable  Law,  (b) not modify the TM Party's  trademark in any way,
          and (c) not use the TM Party's  trademark in connection with any other
          goods or  services  other than the  COLLAGENEX  Supplied  Product.  As
          stated in this  Agreement,  COLLAGENEX  shall be  responsible  for the
          nature and quality of the  COLLAGENEX  Supplied  Product.  Artwork and
          tooling will be at  COLLAGENEX's  expense.  Delivery of all COLLAGENEX
          Supplied Product from COLLAGENEX or COLLAGENEX's contract manufacturer
          to  URL/MUTUAL  shall  be CIP  Philadelphia,  Pennsylvania  (Incoterms
          2000).

          (d) Initial  Quantity  Delivery and  Preparation.

               (i) [Reserved for Future Use].

                                       30



               (ii) In the event that  COLLAGENEX  does not  deliver the Initial
          Shipment of the Initial Quantity of the COLLAGENEX Supplied Product to
          URL/MUTUAL  on or  before  the  Initial  Shipment  Date or the  Second
          Shipment on or before the Second  Shipment  Date,  (A)  URL/MUTUAL may
          receive as liquidated  damages an amount of $[**] for each day,  after
          the Initial  Shipment Date or the Second Shipment Date, as applicable,
          until the entire Initial Shipment or Second  Shipment,  as applicable,
          has been received by URL/MUTUAL,  and (B) subject to the provisions of
          Section 9.3,  COLLAGENEX  shall be deemed to be in material  breach of
          this Agreement.  The Parties acknowledge that the amount of liquidated
          damages is reasonable in light of the fact that  URL/MUTUAL's  damages
          may be difficult to fix with precision. In the event of such a breach,
          URL/MUTUAL  may,  as  its  sole  remedy  and  COLLAGENEX's   exclusive
          liability in addition to the liquidated damages,  terminate the Supply
          Term if  COLLAGENEX  does not cure such failure  within [**]  Business
          Days after COLLAGENEX's receipt of URL/MUTUAL's written notice of such
          failure;   provided  that  such   termination  is  effected  prior  to
          URL/MUTUAL's  receipt  of  the  delayed  Initial  Shipment  or  Second
          Shipment,  as the case may be. For the sake of  clarity,  the  Parties
          agree  that if the  failure  of  COLLAGENEX  to  deliver  the  Initial
          Shipment by the Initial  Shipment  Date or the Second  Shipment by the
          Second Shipment Date is due to a force majeure condition  described in
          Section  9.3,   such  force   majeure   condition   shall  not  excuse
          COLLAGENEX's obligation to pay liquidated damages as described in this
          Section 4.2(d)(ii) but shall delay URL/MUTUAL's right to terminate the
          Supply Term until such force majeure  condition lasts for at least 180
          consecutive days.

               (iii)  COLLAGENEX  and  URL/MUTUAL  shall use their  commercially
          reasonable efforts to make all reasonable  manufacturing  preparations
          to enable COLLAGENEX

                                       31




          to be able to meet the obligations set forth in Section 4.1(a), and as
          of the Execution Date,  COLLAGENEX and URL/MUTUAL shall exercise their
          reasonable  efforts,  and shall  co-operate with each other, to obtain
          all necessary certifications, permits and other registrations required
          pursuant to Applicable Law to enable  COLLAGENEX to have  manufactured
          and supply,  and URL/MUTUAL to sell, the COLLAGENEX  Supplied  Product
          pursuant to the provisions of this Agreement.

          (e)  Labeling.  The  labels,  package  inserts and trade dress for all
     COLLAGENEX  Supplied Product shall be approved in advance by COLLAGENEX and
     URL/MUTUAL (such approval not to be unreasonably withheld or delayed),  and
     shall comply with  Applicable  Law  (including  the terms of the COLLAGENEX
     NDA). Also,  COLLAGENEX will notify URL/MUTUAL in writing of any COLLAGENEX
     Supplied Product labeling change  requirements  pursuant to Applicable Law.
     Such notification  shall be made within a reasonable time period after such
     COLLAGENEX Supplied Product labeling change is made.

          (f)  Manufacturing.  COLLAGENEX  shall  have all  COLLAGENEX  Supplied
     Product  manufactured  in  substantial   compliance  with  Applicable  Law,
     including cGMP.

          (g) Delivery.  COLLAGENEX shall ship to URL/MUTUAL all such COLLAGENEX
     Supplied  Product as may be ordered by URL/MUTUAL under a Firm Order issued
     to COLLAGENEX  pursuant to this  Agreement  within [**] Business Days after
     COLLAGENEX's  receipt of  URL/MUTUAL's  Firm Order,  which  orders shall be
     shipped  from  COLLAGENEX  Safety  Stock  in a  first-in/first-out  manner.
     COLLAGENEX's   failure  to  ship   substantially  all  such  quantities  of
     CollaGenex  Supplied  Product within [**] Business Days after  COLLAGENEX's
     receipt of the relevant  URL/MUTUAL Firm Order shall  constitute a material
     breach of this Agreement.  In the event of such failure,  URL/MUTUAL  shall
     have the

                                       32



     right to terminate the Supply Term of this Agreement if COLLAGENEX does not
     cure such failure within [**] Business Days after  COLLAGENEX's  receipt of
     URL/MUTUAL's  written  notice  of such  failure.  Nothing  herein  shall be
     construed as limiting the Parties'  ability to mutually agree in writing to
     any  adjustment  to a shipment  date  without  any  modification  to a then
     outstanding Firm Order.

          (h) Rejection.  COLLAGENEX or its authorized  supplier shall provide a
     certificate of analysis to URL/MUTUAL  for each lot of COLLAGENEX  Supplied
     Product taken into COLLAGENEX Safety Stock.  Within [**] days of receipt of
     any COLLAGENEX  Supplied  Product or the relevant  certificate of analysis,
     URL/MUTUAL  may, if it  reasonably  suspects that the  COLLAGENEX  Supplied
     Product  does  not  conform  to the  applicable  certificate  of  analysis,
     reasonably  request that COLLAGENEX have reperformed the relevant  analysis
     of such  COLLAGENEX  Supplied  Product to determine  whether the COLLAGENEX
     Supplied  Product conforms to the applicable  certificate of analysis.  Any
     COLLAGENEX  Supplied  Product for which  URL/MUTUAL  does not request  such
     reperformance  within  [**] days of  receipt  of  shipment  shall be deemed
     accepted  by  URL/MUTUAL.   COLLAGENEX,  upon  confirmation,   through  the
     reperformance  of the analysis,  of the  non-conformity  of the  COLLAGENEX
     Supplied Product with the applicable certificate of analysis, shall use its
     reasonable  commercial efforts to replace the defective COLLAGENEX Supplied
     Product,  which  replacement  shall  be  URL/MUTUAL's  sole  and  exclusive
     financial remedy,  and COLLAGENEX's  exclusive  financial  liability,  with
     respect to defective  COLLAGENEX  Supplied  Product,  and URL/MUTUAL  shall
     return the non-conforming COLLAGENEX Supplied Product to COLLAGENEX if such
     COLLAGENEX  Supplied  Product had been received by  URL/MUTUAL.  COLLAGENEX
     shall ship such replacement quantity from the


                                       33




     then-available COLLAGENEX Safety Stock in accordance with the provisions of
     Section  4.2(g).  In the event that the  then-available  COLLAGENEX  Safety
     Stock is insufficient to permit  COLLAGENEX to ship the entire  replacement
     quantity,  the Parties  shall meet and confer in good faith to  determine a
     mutually acceptable shipment schedule.  If COLLAGENEX and URL/MUTUAL do not
     agree,  following the reperformance of the analysis,  on the non-conformity
     of COLLAGENEX Supplied Product with the applicable certificate of analysis,
     then either Party may refer the matter for final  analysis to a specialized
     laboratory  of  national  reputation  acceptable  to both  Parties  for the
     purpose of determining the results.  Any  determination  by such laboratory
     shall be binding upon both Parties.  The cost of any such  reperformance of
     the  analysis,  and,  if  applicable,  the  testing  and  evaluation  by an
     independent  Third Party,  shall be borne by URL/MUTUAL if it is determined
     that the COLLAGENEX  Supplied Product materially conforms to the COLLAGENEX
     NDA, and by COLLAGENEX if determined that it does not.

          (i)  URL/MUTUAL  Product   Inventory.   URL/MUTUAL  shall  provide  to
     COLLAGENEX, within [**] days after the Effective Date, an accounting of the
     doxycycline  hyclate 20 mg  tablets in the  inventory  of  URL/MUTUAL,  its
     Affiliates,  suppliers or distributors,  other than any COLLAGENEX Supplied
     Product (the "Counted Quantity").  COLLAGENEX may, in its discretion and at
     its expense,  participate in such accounting. In addition,  COLLAGENEX may,
     at its  expense,  from time to time during the Supply Term upon  reasonable
     notice to URL/MUTUAL conduct an audit, during normal business hours, of the
     books and facilities of URL/MUTUAL,  its Affiliates and suppliers, in order
     to  determine  the quantity of  doxycycline  hyclate 20 mg tablets in their
     inventory.  During the Supply Term,  URL/MUTUAL  and its  Affiliates  shall
     retain  all  doxycycline  hyclate  20 mg  tablets  (other  than  COLLAGENEX
     Supplied  Product) in the  inventory of the  URL/MUTUAL  facilities at 1100
     Orthodox  Street or 4629 Adams Avenue in  Philadelphia,  Pennsylvania,  and
     URL/MUTUAL  and  its  Affiliates   shall  not  transfer,   market  or  sell
     doxycycline hyclate 20 mg tablets (other than COLLAGENEX


                                       34



     Supplied  Product) from their  inventory,  except that  URL/MUTUAL  and its
     Affiliates may transfer such  doxycycline  hyclate 20 mg tablets from their
     inventory solely to a destruction facility for purposes of destruction.  If
     URL/MUTUAL or its Affiliates have transferred, marketed or sold doxycycline
     hyclate 20 mg tablets (other than COLLAGENEX  Supplied  Product) from their
     inventory  other than for the documented  destruction  thereof or any audit
     reveals a more than immaterial  discrepancy  between the actual quantity of
     doxycycline hyclate 20 mg tablets in their inventory (other than COLLAGENEX
     Supplied   Product)  and  the  Counted   Quantity  (except  to  the  extent
     doxycycline  hyclate 20 mg tablets in inventory has been destroyed and such
     destruction  is  reasonably  documented),  URL/MUTUAL  shall be in material
     breach of this Agreement,  and COLLAGENEX shall have the right to terminate
     this  Agreement  immediately  by providing  written notice to URL/MUTUAL of
     such breach.

     Section 4.3 Pharmacovigilance

          (a) URL/MUTUAL shall promptly notify COLLAGENEX (with such notice made
     to the contact listed below) of all information  coming into its possession
     concerning  adverse  event  reports  within  the  scope  of 21  C.F.R.  ss.
     314.80(c)(iii)  associated  with  commercial  or  clinical  uses,  studies,
     investigations or tests with COLLAGENEX Supplied Product (animal or human),
     throughout  the world,  whether or not  determined  to be  attributable  to
     COLLAGENEX Supplied Product ("Adverse Event Reports"), and URL/MUTUAL shall
     use reasonable commercial efforts to transmit such Adverse Event Reports to
     COLLAGENEX in a timely manner after receipt by URL/MUTUAL,  and within such
     reporting period(s) as may be required


                                       35



     by Applicable  Law.  COLLAGENEX  shall  promptly  notify  URL/MUTUAL of any
     Adverse Event Reports that require the cessation or substantial  alteration
     of the  activities  contemplated  under this  Agreement.  URL/MUTUAL  shall
     submit all  Adverse  Event  Reports to:  Mark  Coyne,  or such  replacement
     designated by COLLAGENEX in accordance with Section 9.9.  URL/MUTUAL  shall
     also  cooperate,  if reasonably  requested by COLLAGENEX,  in obtaining any
     additional information that may bear upon any Adverse Event Reports.

          (b) COLLAGENEX  shall be responsible  for processing and submitting to
     the applicable  authorities or agencies all Adverse Event Reports regarding
     COLLAGENEX Supplied Product.

ARTICLE V - REPRESENTATIONS, WARRANTIES AND COVENANTS

     Section  5.1  Representations  and  Warranties.   Each  of  COLLAGENEX  and
URL/MUTUAL hereby  represent,  warrant and covenant to the other Party as of the
Execution Date, as follows:

          (a) It is an entity duty  organized,  validly  existing and is in good
     standing  under the laws of its  jurisdictions  of  formation,  and has all
     requisite power and authority,  corporate or otherwise, to execute, deliver
     and perform this Agreement.

          (b) The  execution,  delivery and  performance  of this Agreement have
     been duly authorized by all necessary  corporate action and do not and will
     not (i) require any consent or approval of its  stockholders,  (ii) violate
     any provision of any Applicable Law or any provision of its  certificate of
     incorporation,  by-laws or other  founding  document,  or (iii) result in a
     breach of or constitute a default under any material  agreement,  mortgage,
     lease,  license,  permit or other instrument or obligation to which it is a
     party or by which it or its properties may be bound or affected.

                                       36




          (c) It is not currently  debarred,  suspended or otherwise excluded by
     any government agency from receiving government contracts, nor is it or any
     of its employees  disbarred  under the  applicable  provisions of the Food,
     Drug, and Cosmetic Act.

          (d) It is not under any obligation,  contractual or otherwise,  to any
     Third Party that is conflicting  or  inconsistent  in any material  respect
     with the terms of this  Agreement  or that would  impede the  diligent  and
     complete fulfillment of its obligations hereunder.

          (e)  This  Agreement  is  a  legal,   valid  and  binding   obligation
     enforceable against it in accordance with its terms and conditions,  except
     as such enforceability may be limited by applicable bankruptcy, insolvency,
     moratorium,  reorganization  or similar laws,  from time to time in effect,
     affecting creditor's rights generally.

     Section 5.2 Representation.  COLLAGENEX  represents to URL/MUTUAL as of the
Execution Date that the expiration date for doxycycline  hyclate 20 mg immediate
release  tablet  approved  under the  COLLAGENEX NDA is three (3) years from the
date of manufacture.

     Section 5.3 Representations/Covenants.

          (a) In no  event  shall  either  Party  be  required  to  conduct  any
     activities  or  undertake  any  actions  hereunder  that  are  contrary  to
     Applicable Law.

          (b) Each of COLLAGENEX and URL/MUTUAL agrees, represents and covenants
     it shall cause its employees responsible for the supply, distribution, sale
     or promotion of Product in the Territory to act in a professional,  ethical
     and lawful manner and  consistent  with the same diligence used with regard
     to other products marketed by COLLAGENEX and URL/MUTUAL, respectively.

          (c) URL/MUTUAL agrees,  represents and covenants it shall use its best
     efforts to ensure that its employees responsible for the distribution, sale
     or promotion of Product


                                       37




     in the Territory shall not make any statement,  representation or warranty,
     oral or  written,  to any Third  Party  concerning  use of Product  that is
     inconsistent  with,  or  contrary  to,  the  then-applicable  approved  FDA
     labeling for Product.

          (d) [Reserved for Future Use].

          (e) [Reserved for Future Use].

          (f)  COLLAGENEX  shall,  within [**] Business Days after  COLLAGENEX's
     receipt thereof,  inform URL/MUTUAL of any adverse  manufacturing notice to
     COLLAGENEX  or its  manufacturer  affecting the  manufacture  of COLLAGENEX
     Supplied  Product  including  an FDA Form 483,  warning  letter,  a consent
     decree, or other regulatory action.

          (g) Each of COLLAGENEX and URL/MUTUAL hereby agrees,  represents,  and
     covenants to the other Party that it will not, after the Execution Date but
     during the Term,  enter into any obligation,  contractual or otherwise,  to
     any Third Party that is conflicting or inconsistent in any material respect
     with the terms of this  Agreement  or that would  impede the  diligent  and
     complete  fulfillment of its obligations  hereunder.  (h) COLLAGENEX  shall
     not,  during the Supply Term,  withdraw the  COLLAGENEX NDA or request that
     the FDA place the  COLLAGENEX NDA on FDA's list of  discontinued  products,
     provided,  however,  COLLAGENEX shall be entitled to withdraw such NDA: (i)
     pursuant to an FDA (or other regulatory agency) request,  advisory or order
     to withdraw such NDA; or (ii) or upon a  determination  by the FDA that the
     COLLAGENEX Supplied Product is not safe, or effective for use in accordance
     with the approved label.

          (i) In the event that COLLAGENEX  elects to reintroduce,  sell,  offer
     for sale or  manufacture  doxycycline  hyclate 20 mg capsules in the United
     States, or to license the rights to

                                       38




     undertake such activities to any Third Party,  COLLAGENEX shall first offer
     the rights to undertake  such  activities  to  URL/MUTUAL  on terms no less
     favorable  that  those  provided  to  URL/MUTUAL  under  the  terms of this
     Agreement with respect to the COLLAGENEX Supplied Product.  Nothing in this
     Agreement  shall  permit  URL/MUTUAL  to  import  into  the  Territory  any
     doxycycline  hyclate 20 mg capsules  from outside the United  States nor to
     resell in the Territory  any  doxycycline  hyclate 20 mg capsules  imported
     from outside the United States.

          (j) The Parties shall supply each other with such data relating to the
     COLLAGENEX  Supplied  Product and/or  Periostat(R)  required for such other
     Party's  regulatory  reporting  purposes,  which,  during  the Term of this
     Agreement,  shall include those  relating to AMP, "best price" and baseline
     AMP.

          (k) Neither  COLLAGENEX nor its Affiliates,  nor URL, MUTUAL or any of
     their Affiliates, whether directly or indirectly, shall cause or attempt to
     cause or influence First DataBank, Inc. to list COLLAGENEX Supplied Product
     as anything other than a branded product.

     Section 5.4 [Reserved for future use].

     Section 5.5 Regulatory Matters.

          (a)  COLLAGENEX  warrants  that  it has an FDA  approved  NDA  for the
     COLLAGENEX  Supplied  Product,  and that it has appropriate  registrations,
     approvals,  facilities or suppliers to manufacture or have manufactured the
     COLLAGENEX Supplied Product in substantial  compliance with Applicable Law,
     including  cGMP.  URL/MUTUAL  represents  and warrants  that,  prior to the
     Execution  Date,  it has  obtained its own labeler code and its own NDC for
     use in connection with the sale of COLLAGENEX  Supplied Product pursuant to
     the  terms  and  conditions  of  this  Agreement,  and  has  provided  such
     information  to  COLLAGENEX  as  needed  for  inclusion  on the  COLLAGENEX
     Supplied Product labeling.

                                       39



          (b)  During the  Supply  Term,  COLLAGENEX  shall be  responsible  for
     processing  and  submitting to the  applicable  authorities or agencies any
     required  reporting of matters  regarding the manufacture,  integrity,  and
     conformance to specifications of COLLAGENEX Supplied Product.

          (c)  As  between  COLLAGENEX  and  URL/MUTUAL,   COLLAGENEX  shall  be
     responsible  for handling and  responding to any FDA or other  governmental
     agency  inspections  with  respect  to the  manufacture  of the  COLLAGENEX
     Supplied Product supplied to URL/MUTUAL during the Supply Term.

     Section 5.6 Business Operations.

          (a)  Product   Complaints.   As  between  COLLAGENEX  and  URL/MUTUAL,
     COLLAGENEX  shall have the sole right and  responsibility  in the Territory
     for  responding  to quality  complaints  relating  to  COLLAGENEX  Supplied
     Product.  URL/MUTUAL  shall promptly  refer any such quality  complaints it
     receives regarding  COLLAGENEX  Supplied Product to COLLAGENEX.  URL/MUTUAL
     shall also cooperate,  if reasonably requested by COLLAGENEX,  in obtaining
     any additional information that may bear upon any such complaints.

          (b) Recalls,  Withdrawals,  Field Alerts and Other Field  Corrections.
     (i) [Reserved  for Future Use].  (ii)  URL/MUTUAL  shall  promptly  provide
     COLLAGENEX  with  any  information  it  has  or  receives   concerning  any
     bacteriological contamination or any chemical, physical, or other change or
     deterioration in the COLLAGENEX Supplied Product. COLLAGENEX shall promptly
     notify  URL/MUTUAL  when it is more  likely than not that  COLLAGENEX  will
     undertake a recall,  product  withdrawal or stock  recovery with respect to
     the

                                       40



     COLLAGENEX  Supplied  Product  (a  "Product  Action"),   and  shall  notify
     URL/MUTUAL as promptly as possible if it intends to or has provided a field
     alert  to  FDA.  URL/MUTUAL  shall  undertake  whatever  assistance  may be
     reasonably   requested  by  COLLAGENEX  to  facilitate  a  Product  Action,
     including but not limited to ensuring  dissemination  of information to its
     distributors and other customers and  administering  the retention,  return
     and disposition of the applicable  COLLAGENEX Supplied Product inventory in
     the applicable Territory.

          (iii)The costs of any Product  Actions  shall be borne by  COLLAGENEX;
               provided,  however,  URL/MUTUAL  shall be  responsible  for those
               costs  associated  with a Product  Action to the extent  that any
               URL/MUTUAL  acts, or failure to act,  caused such Product Action.
               For the  avoidance of doubt,  the Parties  agree that the cost of
               any Product Action may include,  without  limitation,  URL/MUTUAL
               recall  costs and any charges to  URL/MUTUAL  from its  customers
               related to their  recall  procedures,  including  product  costs,
               administrative costs, shipping costs, customer notification costs
               and the cost of product destruction.

          (c) Marketing  Materials.  URL/MUTUAL  shall provide  COLLAGENEX  with
     specimens of mailing  pieces and any other  labeling or  advertising  which
     URL/MUTUAL  devises for  promotion of the  COLLAGENEX  Supplied  Product at
     least  three (3)  Business  Days  before  their  initial  dissemination  or
     publication.  URL/MUTUAL shall submit such specimens to: Chris Powala,  VP,
     Regulatory, or such replacement designated by COLLAGENEX in accordance with
     Section 9.9.  COLLAGENEX shall submit each such specimen to FDA with a Form
     FDA-2253 at the time of its initial dissemination or publication.


                                       41



     Section 5.7 DISCLAIMER OF WARRANTIES.

          (a)  EXCEPT  FOR  THE  EXPRESS  WARRANTIES  AND   REPRESENTATIONS  AND
     COVENANTS  CONTAINED IN THIS AGREEMENT,  NEITHER  URL/MUTUAL NOR COLLAGENEX
     MAKES,   AND  EACH  HEREBY   EXPRESSLY   DISCLAIMS,   ANY   WARRANTIES   OR
     REPRESENTATIONS,  EITHER  EXPRESS  OR  IMPLIED,  WHETHER IN FACT OR IN LAW,
     INCLUDING  WITHOUT  LIMITATION  IMPLIED  WARRANTIES OF  MERCHANTABILITY  OR
     FITNESS FOR A PARTICULAR PURPOSE.

          (b) Nothing in this Agreement shall be construed as:

               (i) A warranty or  representation  by CollaGenex or Foundation as
          to the validity or enforceability of the Patents;

               (ii) A warranty or  representation  by  CollaGenex  or Foundation
          that  the  COLLAGENEX  Supplied  Product  is  or  will  be  free  from
          infringement of patents or other rights of Third Parties;

               (iii)  A  requirement   that   CollaGenex  or  Foundation   file,
          prosecute, or maintain any patent application,  or secure or renew any
          patent;

               (iv) An obligation of CollaGenex or Foundation to bring,  defend,
          or prosecute  actions or suits against Third Parties for  infringement
          of any patent;

               (v)  Granting to Mutual and URL,  by  implication,  estoppel,  or
          otherwise,  any  licenses or rights  under any patent right other than
          the Patents, except as provided in Section 2.1(a)(ii); or

               (vi) An  obligation of any Party to furnish know how or any other
          technical information not disclosed in the Patents to any other Party.

                                       42


ARTICLE VI - INTELLECTUAL PROPERTY AND CONFIDENTIAL INFORMATION

     Section 6.1 Ownership of Pre-Existing  Intellectual  Property  Rights.  Any
intellectual   property  rights   (including   patents,   patent   applications,
copyrights,  trade  dress and  trademarks)  owned by either  Party  prior to the
Execution  Date shall  remain  solely  owned by such Party.  Except as otherwise
explicitly  provided  herein,  no right,  express or implied,  is granted by the
Agreement   to  use  in  any  manner  the  names   "COLLAGENEX,"   "URL/MUTUAL,"
Periostat(R) or the name of any Party or any Affiliate of any Party.

     Section 6.2  Recognition of Validity and  Infringement.  URL/MUTUAL  hereby
acknowledges the validity and  enforceability of the Patents and admits that the
manufacture,  importation,  commercial  use,  sale  or  offer  for  sale  of the
URL/MUTUAL  Product  would  infringe  the  Patents,  but for the license  herein
granted.

     Section  6.3   Confidential   Information,   Publicity,   and  Publication.
URL/MUTUAL and COLLAGENEX each hereby  recognize and acknowledge  that the other
Party's   Confidential   Information   constitutes   valuable  and  confidential
information.  Subject to other express provisions of this Agreement,  COLLAGENEX
and  URL/MUTUAL  each agree that during the Term, and for a period of [**] years
after the effective date of termination  for any reason of this Agreement or the
date of expiration hereof:

          (a) the Parties shall not  disclose,  directly or  indirectly,  in any
     manner  whatsoever  to  any  Third  Parties  any  Confidential  Information
     received  from the other  Party  (the  "Disclosing  Party")  without  first
     obtaining the written consent of the Disclosing  Party, and the other Party
     ("Recipient")  shall  keep  confidential,  all  of the  Disclosing  Party's
     Confidential  Information that is disclosed to Recipient.  Recipient agrees
     to use the same level of care in

                                       42



     safeguarding the Disclosing Party's Confidential Information that Recipient
     uses with its own confidential  information of a similar nature,  but in no
     event less than reasonable care. Recipient shall restrict disclosure of the
     Disclosing  Party's  Confidential   Information  solely  to  those  of  its
     employees  or  representatives  having  a need  to know  such  Confidential
     Information  in order to accomplish  the purposes of this  Agreement.  Each
     Party  represents  that its respective  employees and  representatives  who
     shall have access to the  Confidential  Information of the Disclosing Party
     are bound by an  agreement to maintain  such  Confidential  Information  in
     accordance with the  confidentiality  obligations set forth in this Article
     VI.

          (b)  Recipient  shall  not use  the  Disclosing  Party's  Confidential
     Information in any manner  whatsoever  other than solely in connection with
     the  performance  of its  obligations  or exercise of its rights under this
     Agreement.

          (c)  Except  as  expressly  set forth  herein,  Recipient  shall  not,
     directly  or  indirectly,  without the  Disclosing  Party's  prior  written
     consent, disclose in any manner whatsoever to any Third Party the fact that
     the Disclosing  Party's  Confidential  Information  exists or has been made
     available to Recipient.

          (d) In the event  Recipient is requested  pursuant to, or required by,
     Applicable Law,  including  without  limitation the rules or regulations of
     the United States Securities and Exchange  Commission or similar regulatory
     agency  in a  country  other  than  the  United  States,  or the  rules  or
     regulations of any stock exchange (including without limitation Nasdaq), or
     if, in order for the  Recipient  to defend or  prosecute  litigation  it is
     necessary  for the  Recipient,  to disclose any of the  Disclosing  Party's
     Confidential  Information,  the Recipient shall notify the Disclosing Party
     promptly so that the Disclosing  Party may seek a protective order or other
     appropriate  remedy or, in the Disclosing  Party's sole  discretion,  waive
     compliance with the

                                       44



     confidentiality  provisions of this  Agreement.  At the Disclosing  Party's
     expense,   Recipient  shall  co-operate  in  all  reasonable  respects,  in
     connection  with  any  reasonable  actions  to be taken  for the  foregoing
     purpose.  In the event  that no such  protective  order or other  remedy is
     obtained  prior to the  time at which  Recipient  is  required  to make the
     disclosure,  or that  the  Disclosing  Party  waives  compliance  with  the
     confidentiality  provisions  of this  Agreement,  Recipient is permitted to
     disclose the  Confidential  Information of the Disclosing  Party,  provided
     that  Recipient  shall,  without  liability  hereunder,  furnish  only that
     portion of the Confidential  Information  which Recipient is advised by its
     counsel is legally required, and Recipient will exercise reasonable efforts
     to obtain reliable assurances that confidential  treatment will be accorded
     the Disclosing Party's Confidential Information.

          (e) Upon the date of the  expiration or  termination of this Agreement
     for any reason,  either  Party may request in writing,  and the other Party
     shall either:  (i) promptly  destroy all copies of the  requesting  Party's
     Confidential  Information  in the possession of the other Party and confirm
     such  destruction  in writing to the  requesting  Party,  or (ii)  promptly
     deliver to the requesting  Party, at the other Party's expense,  all copies
     of such  Confidential  Information  in the  possession  of the other Party,
     provided,  however,  the other Party shall be permitted to retain,  one (1)
     copy of the  requesting  Party's  Confidential  Information  for  the  sole
     purpose of determining  any continuing  obligations  and rights  hereunder.
     Additionally,  both Parties  shall  immediately  cease all use of the other
     Party's  Confidential  Information,   including,   without  limitation,  by
     removing all references to such Confidential Information from its analyses,
     compilations,  studies  or other  documents  except  as  already  disclosed
     pursuant  to Section  6.3(d) or 6.4.  All  Confidential  Information  shall
     continue  to be subject to the terms of this  Agreement  for the period set
     forth in this Section 6.3.

                                       45



          (f) Each Party  represents  and  warrants  to the other  Party that it
     shall  have,  as of the  date of  disclosure,  the  right to  disclose  its
     Confidential Information to the other Party. Each Party may seek to enforce
     all rights and legal  remedies  available  under this Article VI or by law,
     including, without limitation,  injunctive relief, specific performance and
     other equitable remedies in the event of a breach of the provisions of this
     Article VI by the other Party.

          (g)  To  the  extent   Recipient  is  performing  its  obligations  or
     exercising  its rights through its  Affiliates,  Recipient may disclose the
     Disclosing Party's Confidential  Information,  without obtaining Disclosing
     Party's prior consent, to such Affiliates and shall cause its Affiliates to
     observe the terms of this Article VI hereof,  and shall be responsible  for
     any breach of such provisions by any of its Affiliates.

          (h)  Notwithstanding  the  provisions  of this Article VI, the Parties
     agree that nothing  contained in this Article VI shall prevent Recipient in
     any  way  whatsoever  from   disclosing  any  of  the  Disclosing   Party's
     Confidential  Information,   without  obtaining  Disclosing  Party's  prior
     consent, to any Third Party through which Recipient is permitted to perform
     its obligations or exercise its rights under this Agreement,  provided such
     Third Party has undertaken an obligation of confidentiality similar to such
     obligations  contained in Article VI herein with respect to the  Disclosing
     Party's Confidential Information and Recipient shall be responsible for any
     breach of such provisions by any of such Third Parties.

     Section 6.4 Nothing in this  Agreement  shall be construed as preventing or
in any way inhibiting  either Party from complying with Applicable Law governing
activities and  obligations  undertaken  pursuant to this Agreement or otherwise
governing  such Party,  in any manner  which it  reasonably  deems  appropriate,
including,  for example, by disclosing to regulatory authorities confidential or
other information received from the other Party, subject to Section 6.3(d). In


                                       46



addition,  URL/MUTUAL agrees that, in compliance with Applicable Law, COLLAGENEX
is permitted  to issue a press  release and make any filing  required  under the
rules or regulations of the United States Securities and Exchange  Commission or
similar  regulatory  agency in a country  other than the United  States,  or the
rules  or  regulations  of any  stock  exchange  (including  without  limitation
Nasdaq),  on or after the Effective Date, to announce the  effectiveness of this
Agreement and the  settlement of the Pending  Actions,  without being subject to
the  provisions of Section  6.3(d),  but in any event  COLLAGENEX  shall issue a
press release on or before the first (1st) Business Day after the Effective Date
(the "Formal Press Release").

ARTICLE VII - TERM AND TERMINATION

     Section 7.1 Term. This Agreement shall become effective as of the Execution
Date and,  unless sooner  terminated  as provided  herein,  shall  automatically
expire  as of the date the last of the  Patents  expires  or the  earlier  final
determination  by a court of  competent  jurisdiction,  from which no appeal has
been taken or all appeals have been  exhausted,  that the Patents are invalid or
unenforceable (the "Term"),  with the exception of those certain  obligations of
the parties set forth herein at Section 7.3.

          (a)  Promptly  after  the  Execution   Date,  the  Parties  shall  use
     commercially  reasonable  efforts  to have the  Effective  Date occur on or
     before April 22, 2004. On and after the Effective  Date,  the  Intellectual
     Property Grant set forth in Section 2.1 of this Agreement shall also become
     effective and shall remain in effect during the Supply Term, and URL/Mutual
     shall use its  reasonable  commercial  efforts to  commence  marketing  the
     COLLAGENEX Supplied Product.

          (b) [Reserved for Future Use].

                                       47



     Section 7.2 Termination.

          (a)  Termination for Breach.  Except as otherwise  provided in Section
     4.2(a)(i), Section 4.2(i) or this Section 7.2, each Party shall be entitled
     to terminate  this  Agreement  by written  notice to the other Party in the
     event that the other Party shall be in material default or breach of any of
     its  obligations  hereunder,  and shall fail to remedy any such  default or
     breach  within  sixty  (60)  days (or,  solely  with  respect  to a payment
     obligation under this Agreement,  thirty (30) days) after notice thereof by
     the  non-defaulting/non-breaching  Party.  If such default or breach is not
     corrected  within the foregoing sixty (60), or thirty (30), day period,  as
     applicable,  the non-breaching Party shall have the right to terminate this
     Agreement  by giving  written  notice to the other  Parties,  provided  the
     notice of  termination  is given  within six (6) months of the  default and
     prior to correction of the default.

          (b)  Termination  upon  Bankruptcy.  Either Party may  terminate  this
     Agreement  if, at any  time,  the other  Party  shall  file in any court or
     agency  pursuant to any statute or  regulation  of any state or country,  a
     petition  in  bankruptcy  or  insolvency  or for  reorganization  or for an
     arrangement or for the appointment of a receiver or trustee of the Party or
     of its  assets,  or if the other  Party  proposes  a written  agreement  of
     composition  or  extension  of its debts,  or if the other  Party  shall be
     served with an  involuntary  petition  against it, filed in any  insolvency
     proceeding,  and such petition  shall not be dismissed with sixty (60) days
     after the filing  thereof,  or if the other  Party shall  propose,  or be a
     party to, any  dissolution or  liquidation  of such other Party,  or if the
     other Party shall make an assignment for the benefit of creditors.

          (c) Termination upon Delayed Effective Date.

               (i)  This  entire  Agreement  may be  terminated  by  COLLAGENEX,
          immediately upon written notice to URL/MUTUAL, at any time after April
          22, 2004 but prior to

                                       48




     the Effective Date if, and only if, the Effective Date does not occur on or
     before April 22, 2004 other than as a result of COLLAGENEX's failure to (A)
     deliver the  Settlement  Payment to Hoffmann & Baron as escrow  agent,  (B)
     execute this  Agreement,  (C) execute the Stipulated  Order in the New York
     action or (D) execute the Stipulated Order in the Pennsylvania action.

               (ii) This  entire  Agreement  may be  terminated  by  URL/MUTUAL,
          immediately upon written notice to COLLAGENEX, at any time after April
          22,  2004  but  prior to the  Effective  Date  if,  and  only if,  the
          Effective  Date does not occur on or before  April 22, 2004 other than
          as a result of URL/MUTUAL's failure to (A) execute this Agreement, (B)
          execute the Stipulated  Order in the New York action,  (C) execute the
          Stipulated  Order  in  the  Pennsylvania   action,   (D)  execute  the
          Stipulated  Order in the FDA action or (E)  receive  notice from First
          DataBank,  Inc. that the  COLLAGENEX  Supplied  Product is listed as a
          branded product.

               (iii) It is expressly understood by the Parties that in the event
          of a termination pursuant to this Section 7.2(c), this Agreement shall
          be null and void, and the law firm of Hoffmann & Baron, LLP, as escrow
          agent,  shall return the Settlement Payment to COLLAGENEX and Hoffmann
          & Baron, LLP shall not cause the Stipulated  Orders to be filed in any
          Court. It is further  understood by the Parties that the admissions of
          infringement, validity and enforceability of the Patents by URL/MUTUAL
          set  forth  in  this  Agreement,  the  Settlement  Agreement  and  the
          Stipulated  Orders  have  been  made  by  URL/MUTUAL  as  part  of the
          consideration for this Agreement and the Settlement Agreement and that
          such  admissions  shall  be null  and void  upon  termination  of this
          Agreement  pursuant  to this  Section  7.2(c) and shall not be used by
          COLLAGENEX or Foundation for any purpose, including for the purpose of
          establishing    liability   for   infringement,    the   validity   or
          enforceability of the patents, or the


                                       49



     objective reasonableness of the assertion of the patents against URL/MUTUAL
     in any litigation between or among the Parties.

          (d)  For  the  sake of  clarity,  the  Parties  acknowledge  that  the
     termination  of the Supply Term may,  under  certain  circumstances,  occur
     prior to the termination of the Agreement,  and that the termination of the
     Supply Term, in and of itself, does not terminate this Agreement.

     Section 7.3 Effect of Termination.

          (a) Upon the expiration of this  Agreement or the  termination of this
     Agreement by COLLAGENEX pursuant to Sections 4.2(a)(i),  4.2(i),  7.2(a) or
     7.2(b), (i) all licenses granted to URL/MUTUAL pursuant to Article II shall
     terminate,  (ii) URL may retain the Settlement  Payment (subject to Section
     7.3(e)),  (iii)  COLLAGENEX  may, in its  discretion  and provided that the
     Supply Term had not been terminated  prior to the expiration or termination
     of this Agreement, require URL/MUTUAL to accept delivery of any undelivered
     portions of the Initial Quantity and all quantities of COLLAGENEX  Supplied
     Product that have been ordered pursuant to a Firm Order (in which event the
     relevant provisions of Section 3.1 and Article IV shall survive termination
     with respect to such  deliveries),  or  COLLAGENEX  may cancel such orders,
     (iv)  COLLAGENEX  may, in its  discretion and provided that the Supply Term
     had not been  terminated  prior to the  expiration or  termination  of this
     Agreement,  require  URL/MUTUAL  to  purchase  and accept  delivery  of all
     quantities   of   COLLAGENEX   Supplied   Product   which  are  subject  to
     non-cancellable  orders placed with COLLAGENEX's  manufacturers  (provided,
     however,  that COLLAGENEX shall use commercially  reasonable efforts to try
     to cancel such orders) and up to [**] Supply of available COLLAGENEX Safety
     Stock,  in each case at a price equal to the lesser of (A) $[**] per Bottle
     or (B) $[**] less than the applicable  URL/MUTUAL  Weighted Average Selling
     Price, provided,  however, that, in the event this clause (iv) is triggered
     by the  expiration,  not the  termination,  of this  Agreement,  the  total
     quantity  of  COLLAGENEX  Supplied  Product  which  COLLAGENEX  may require
     URL/MUTUAL to purchase and accept delivery of, pursuant to this

                                       50




     clause (iv),  shall be limited to [**] Supply,  and (v) the  provisions  of
     Section 7.3(e) shall apply.

          (b) Upon the  termination of this Agreement by URL/MUTUAL  pursuant to
     Sections 7.2(a) or 7.2(b), (i) all licenses granted to URL/MUTUAL  pursuant
     to Sections 2.2 or 2.3, as applicable,  shall continue, (ii) URL may retain
     the Settlement  Payment  (subject to Section  7.3(e)),  (iii) if the Supply
     Term had not been terminated prior to the expiration or termination of this
     Agreement,  URL/MUTUAL shall accept delivery of any undelivered portions of
     the Initial  Quantity,  all quantities of COLLAGENEX  Supplied Product that
     have been ordered pursuant to a Firm Order and, if requested by COLLAGENEX,
     URL/MUTUAL  shall  purchase  and  accept  delivery  of  all  quantities  of
     COLLAGENEX  Supplied  Product which are subject to  non-cancellable  orders
     placed with COLLAGENEX's manufacturers (provided,  however, that COLLAGENEX
     shall use commercially reasonable efforts to try to cancel such orders) and
     up to [**]  Supply  of the  available  COLLAGENEX  Safety  Stock  (and  the
     relevant provisions of Section 3.1 and Article IV shall survive termination
     with respect to all the foregoing deliveries),  provided that, with respect
     to this  Section  7.3(b)(iii),  the  purchase  price  for  such  COLLAGENEX
     Supplied  Product shall be reduced to the lesser of (A) $[**] per Bottle or
     (B) $[**] less than the  applicable  URL/MUTUAL  Weighted  Average  Selling
     Price, and (iv) the provisions of Section 7.3(e) shall apply.

          (c) Upon the  termination  of this  Agreement by any Party pursuant to
     Section 7.2(c), (i) all licenses granted to URL/MUTUAL  pursuant to Article
     II shall  terminate,  (ii) the  Settlement  Payment  shall be  returned  to
     COLLAGENEX (subject to Section 7.3(e)), (iii) the


                                       51




     Initial  Quantity and any  quantities of COLLAGENEX  Supplied  Product that
     have been ordered  pursuant to a Firm Order shall be  cancelled  or, if any
     COLLAGENEX  Supplied  Product had been received by URL/MUTUAL,  returned by
     URL/MUTUAL to COLLAGENEX for a full credit to URL/MUTUAL  for  URL/MUTUAL's
     cost for such  product,  and (iv) the  provisions  of Section  7.3(e) shall
     apply.

          (d) Upon the expiration of this  Agreement or the  termination of this
     Agreement  by  URL/MUTUAL  pursuant  to  Sections  7.2(a)  or  7.2(b),  the
     provisions of Section 3.2 shall survive such expiration or termination.

          (e) (i) The  expiration or termination of this Agreement in accordance
     with the  provisions  hereof and, the  operation of any  provisions of this
     Section  7.3,  shall not in any way  prejudice  the rights of either  Party
     against the other  accrued or  accruing  under this  Agreement  before such
     expiration or termination,  including,  without limitation, the obligations
     to pay any amounts owed pursuant to this Agreement, nor otherwise limit the
     Parties' remedies that may be otherwise available to them in law or equity.

               (ii) Except as otherwise provided in this Section 7.3, expiration
          or  termination  of this  Agreement  shall  terminate all  outstanding
          obligations  and  liabilities  between the parties  arising  from this
          Agreement  except those  described in Sections  2.5,  3.3,  3.4,  3.5,
          4.2(h),  4.3,  Section 5.7,  Article VI, this Section 7.3 and Articles
          VIII and IX,  and,  solely  with  respect to any  COLLAGENEX  Supplied
          Product  delivered  during  the Term or after  the  Term  pursuant  to
          Sections  7.3(a)(iii),  7.3(a)(iv) or  7.3(b)(iii),  Sections  5.3(b),
          5.3(c), 5.3(j), 5.3(k), 5.5(c), 5.6(a) and 5.6(b).


                                       52



ARTICLE VIII - INDEMNIFICATION, INSURANCE AND DISPUTE RESOLUTION

     Section 8.1. Product Claims: COLLAGENEX and URL/MUTUAL hereby agree:

               (a)  "Product   Claims"  shall  mean  Third  Parties'  actual  or
          threatened claims, demands or causes of action that allege negligence,
          breach  of  warranty,  and/or  strict  liability  with  regard  to the
          development, testing, labeling, and/or manufacturing of the COLLAGENEX
          Supplied  Product  and that seek  monetary  or  equitable  relief  for
          realized,  future or  potential  personal  bodily  injuries  or deaths
          allegedly  caused  by  the  use of the  COLLAGENEX  Supplied  Product.
          Product Claims do not include any actual or threatened claims, demands
          or causes of action  associated  with,  related to or arising from (i)
          URL/MUTUAL  Product,  or (ii) the  marketing  or sales  activities  of
          URL/MUTUAL  or any  URL/MUTUAL  Party with  respect to the  COLLAGENEX
          Supplied  Product,  or the  negligence or intentional  misconduct,  or
          breach of its obligations  hereunder,  of URL/MUTUAL or any URL/MUTUAL
          Party (a "URL/MUTUAL Negligence Product Claim").

               (b)  URL/MUTUAL  shall  provide  COLLAGENEX  with prompt  written
          notice of any Product Claims against  URL/MUTUAL or a URL/MUTUAL Party
          (as  defined  in Section  8.1(c)),  as well as copies of all papers or
          other  documents  received by  URL/MUTUAL  or a URL/MUTUAL  Party that
          contain or give notice of such  Product  Claims,  and shall tender its
          defense of all Product  Claims to COLLAGENEX.  Thereafter,  COLLAGENEX
          shall, in writing, within ten (10) Business Days after receipt of such
          URL/MUTUAL notice and tender,  advise URL/MUTUAL as to whether it will
          accept  URL/MUTUAL's  tender of any Product Claims,  which  acceptance
          COLLAGENEX  shall not  unreasonably  withhold.  Prior to  COLLAGENEX's
          written   acknowledgement  and  acceptance  of  URL/MUTUAL's   tender,
          URL/MUTUAL shall

                                       53




          retain the  obligation  to defend  against any Product  Claims,  which
          shall include the obligation to prevent default.

               (c)  Upon  accepting  the  tender  of  any  Product  Claims:  (i)
          COLLAGENEX agrees to defend and indemnify URL/MUTUAL,  its Affiliates,
          and its and their officers, directors,  trustees, agents and employees
          (individually and/or collectively referred to herein as an "URL/MUTUAL
          Party")  from and  against any and all  losses,  liabilities,  damages
          (excluding all special, indirect,  incidental, or consequential losses
          or damages),  expenses and fees (including  reasonable attorneys' fees
          paid or payable by URL/MUTUAL  or a URL/MUTUAL  Party to a Third Party
          in connection with a Product Claim; and (ii) COLLAGENEX shall have the
          exclusive right to control the defense of such Product  Claims,  which
          right shall include,  but is not limited to, the right to select legal
          counsel of its choice and  determine  whether to settle and the amount
          of any  settlement.  COLLAGENEX  shall use good faith  efforts in such
          defense, and shall not make any admissions of liability on the part of
          URL/MUTUAL or compromise any  substantive  right of URL/MUTUAL in such
          action without URL/MUTUAL's prior written consent,  which shall not be
          unreasonably withheld or delayed.

               (d) URL/MUTUAL  agrees to cooperate in good faith with COLLAGENEX
          and its  legal  counsel  in the  defense  of any suit  and to  provide
          COLLAGENEX  with  any  information  or  other  assistance   reasonably
          requested in a timely manner.

               (e) In accepting  tender of and agreeing to defend and  indemnify
          URL/MUTUAL  against  Product Claims,  COLLAGENEX  does not waive,  and
          expressly  reserves,  its right to  contribution  from  URL/MUTUAL for
          monies paid by COLLAGENEX, in whole or part, arising out of conduct by
          URL/MUTUAL that is finally determined by a court of


                                       54



          competent jurisdiction to have created, or contributed to the creation
          of, COLLAGENEX's liability for such Product Claim.

               (f) URL/MUTUAL  and COLLAGENEX  agree that all claims or disputes
          asserted by either Party against the other arising from or relating to
          a Product Claim,  including those for indemnification or contribution,
          shall be resolved in accordance with Section 9.7A.  Neither URL/MUTUAL
          nor COLLAGENEX  shall be compelled to assert any claims,  cross-claims
          or  counter-claims  against the other in any Product Claims covered or
          claimed to be covered by this  section  8.1,  and neither  Party shall
          ever argue that the other has waived its right to seek contribution or
          other  monetary   relief  by  not  filing  a  claim,   cross-claim  or
          counter-claim  in any  underlying  lawsuit  or that  any  later  claim
          between them should be  dismissed or otherwise  disposed of because it
          should have been raised as a claim,  cross-claim or  counter-claim  in
          the  underlying  lawsuit;  provided,  however,  that any  such  claim,
          cross-claim  or  counter-claim  shall be brought by the Parties within
          twelve (12) months after final  resolution of the underlying  lawsuit.
          The Party seeking to mediate or arbitrate any claim or group of claims
          under this section 8.1 shall give timely notice  thereof,  but nothing
          herein shall prevent the Parties from  agreeing to postpone  mediation
          or arbitration for any length of time if they believe that doing so is
          in their mutual best interest.  Further,  nothing herein shall prevent
          the Parties from mediating or arbitrating  multiple claims in a single
          aggregated proceeding.

               (g) URL/MUTUAL and COLLAGENEX  shall each be responsible  for its
          own  attorney's  fees  and  costs  arising  out of or  related  to any
          mediation or arbitration to resolve any claim for  indemnification  or
          contribution pursuant to this section 8.1.

                                       55




     Section 8.2 URL/MUTUAL Product Claims.

               (a) URL/MUTUAL agrees to defend, indemnify and hold harmless each
          of  COLLAGENEX  and  Foundation,   and,  with  respect  to  each,  its
          Affiliates,  and its and their officers,  directors,  trustees, agents
          and employees  (individually and/or collectively referred to herein as
          an   "COLLAGENEX   Party")  from  and  against  any  and  all  losses,
          liabilities,  damages  (including  any special,  indirect,  exemplary,
          incidental,  or  consequential  losses or damages),  expenses and fees
          (including  all  reasonable  attorney's  fees and other legal fees and
          costs) incurred,  suffered, paid or payable by COLLAGENEX,  Foundation
          or a  COLLAGENEX  Party  in  connection  with  any and all  actual  or
          threatened lawsuits,  injunctions,  claims, demands or other causes of
          action  arising  from,  related to, or  associated  with a  URL/MUTUAL
          Product or URL/MUTUAL  Negligence Product Claim (either, a "URL/MUTUAL
          Product Claim").

               (b)  COLLAGENEX  shall  provide  URL/MUTUAL  with prompt  written
          notice  of  any  URL/MUTUAL  Product  Claim  against  COLLAGENEX  or a
          COLLAGENEX  Party,  as well as copies of all papers or other documents
          received by  COLLAGENEX  or a  COLLAGENEX  Party that  contain or give
          notice of such URL/MUTUAL Product Claims.

               (c) The  Parties  agree to  cooperate  with each  other and their
          respective  legal  counsel in the  defense of any  URL/MUTUAL  Product
          Claim  and to  provide  each  other  with  any  information  or  other
          reasonable  assistance requested in a timely manner.  URL/MUTUAL shall
          use  good  faith  efforts  in such  defense,  and  shall  not make any
          admissions of liability on the part of  COLLAGENEX  or compromise  any
          substantive  right of COLLAGENEX in such action  without  COLLAGENEX's
          prior written  consent,  which shall not be  unreasonably  withheld or
          delayed.

                                       56



               (d) URL/MUTUAL  and COLLAGENEX  agree that all claims or disputes
          asserted by either Party against the other arising from or relating to
          a URL/MUTUAL  Product Claim,  including those for  indemnification  or
          contribution,  shall be  resolved in  accordance  with  Section  9.7A.
          Neither  URL/MUTUAL  nor  COLLAGENEX  shall be compelled to assert any
          claims,  cross-claims  or  counter-claims  against  the  other  in any
          URL/MUTUAL  Product  Claims  covered  or claimed to be covered by this
          section  8.1,  and  neither  Party shall ever argue that the other has
          waived its right to seek  contribution or other monetary relief by not
          filing a claim, cross-claim or counter-claim in any underlying lawsuit
          or that any later claim  between them should be dismissed or otherwise
          disposed of because it should have been raised as a claim, cross-claim
          or counter-claim in the underlying lawsuit;  provided,  however,  that
          any such claim,  cross-claim or counter-claim  shall be brought by the
          Parties  within  twelve (12)  months  after  final  resolution  of the
          underlying  lawsuit.  The Party  seeking to mediate or  arbitrate  any
          claim or group of claims  under this  section  8.2 shall  give  timely
          notice  thereof,  but nothing  herein  shall  prevent the Parties from
          agreeing to postpone  mediation or arbitration  for any length of time
          if they  believe  that  doing so is in  their  mutual  best  interest.
          Further,  nothing  herein shall prevent the Parties from  mediating or
          arbitrating multiple claims in a single aggregated proceeding.

               (e) URL/MUTUAL and COLLAGENEX  shall each be responsible  for its
          own  attorney's  fees  and  costs  arising  out of or  related  to any
          mediation or arbitration to resolve any claim for  indemnification  or
          contribution pursuant to this section 8.2.

     Section 8.3 Other  Claims:  This  section  applies  solely to all actual or
threatened  claims,  demands or causes of action  brought by Third  Parties  and
arising  out of,  related to, or  associated  with this  Agreement  that are not
Product Claims or URL/MUTUAL  Product Claims ("Other Claims").  Examples of such
Other Claims (which are not meant to be exhaustive in any

                                       57



way) may include claims of: antitrust  violations;  fraud or abuse in marketing;
unfair business or trade practices;  unfair or  discriminatory  labor practices;
tortious interference; or violations of any securities laws.

               (a)  URL/MUTUAL  agrees to defend,  indemnify  and hold  harmless
          COLLAGENEX,  Foundation  and  any  COLLAGENEX  Party  for  any and all
          losses,   liabilities,   damages  (including  all  special,  indirect,
          exemplary,  incidental, or consequential losses or damages),  expenses
          and fees  (exclusive of all legal fees) paid or payable by COLLAGENEX,
          Foundation or a COLLAGENEX  Party to any Third Party on an Other Claim
          that is finally determined by a court of competent  jurisdiction to be
          attributable to the improper, unlawful or otherwise liability-creating
          conduct of URL/MUTUAL and any URL/MUTUAL Party.

               (b)  COLLAGENEX  agrees to defend,  indemnify  and hold  harmless
          URL/MUTUAL  and  any   URL/MUTUAL   Party  for  any  and  all  losses,
          liabilities,  damages  (including  all special,  indirect,  exemplary,
          incidental,  or  consequential  losses or damages),  expenses and fees
          (exclusive  of all legal fees) paid or payable by  URL/MUTUAL  and any
          URL/MUTUAL  Party to any Third Party on an Other Claim that is finally
          determined by a court of competent  jurisdiction to be attributable to
          the  improper,  unlawful or  otherwise  liability-creating  conduct of
          COLLAGENEX or a COLLAGENEX Party.

               (c) Any Party seeking to assert a right of indemnification  under
          this Section 8.3 shall provide the other with prompt written notice of
          the Other  Claim  against it, as well as copies of all papers or other
          documents  received  by it that  contain or give  notice of such Other
          Claims,  and shall  tender its  defense  of such  Other  Claims to the
          indemnifying Party in such notice.

                                       58



               (d) Any Party  granting  indemnification  under this  Section 8.3
          shall have the right to control the defense of such Other Claim, which
          right shall include,  but is not limited to, the right to select legal
          counsel of its choice and  determine  whether to settle and the amount
          of any settlement,  provided,  however,  that an indemnified Party may
          participate  in, but not  control,  the  defense of such Other  Claims
          using  attorneys of its choice and at its sole cost and  expense,  and
          further provided that the indemnifying Party may not settle such Other
          Claims in any manner  that would  require  payment by the  indemnified
          Party, or would materially  adversely affect the rights granted to the
          indemnified Party under this Agreement,  or would materially  conflict
          with  the  terms  of  this  Agreement,  without  first  obtaining  the
          indemnified Party's prior written consent,  which consent shall not be
          unreasonably withheld or delayed.

               (e) URL/MUTUAL and COLLAGENEX are responsible for their own legal
          fees (including  attorney's  fees) and costs arising out of or related
          to any Other Claims. URL/MUTUAL and COLLAGENEX are further responsible
          for their own  attorney's  fees and costs arising out of or related to
          any mediation or arbitration to resolve any claim for  indemnification
          or contribution pursuant to this section 8.3.

               (f) To the extent the  Parties do not have a conflict of interest
          with respect to the Other Claim,  the Parties agree to cooperate  with
          each other and their  respective  legal  counsel in the defense of any
          Other Claim and to provide  each other with any  information  or other
          reasonable assistance requested in a timely manner.

               (g) In the  event an Other  Claim is based  partially  on a claim
          indemnified  by one Party and partially on a claim  indemnified by the
          other Party  pursuant to this Section  8.3,  any payments  incurred in
          connection with such claims are to be apportioned  between the Parties
          in accordance with the degree of cause attributable to each Party.

                                       59



     Section  8.3A.  Allocation.  In the event a claim is based  partially on an
indemnified  claim  described  in Sections  8.1,  8.2 or 8.3 and  partially on a
non-indemnified claim, or is based partially on a claim described in Section 8.1
or 8.3 and partially on a claim described in Section 8.2 or 8.3, any payments in
connection  with such  claims  are to be  apportioned  between  the  Parties  in
accordance with the degree of cause attributable to each Party.

     Section 8.4.  OTHER THAN AS EXPRESSLY SET FORTH HEREIN  RELATING TO PRODUCT
CLAIMS, URL/MUTUAL CLAIMS OR OTHER CLAIMS OR WITH RESPECT TO A BREACH OF ARTICLE
VI,  IN  NO  EVENT  SHALL  EITHER  PARTY,  ITS  DIRECTORS,  TRUSTEES,  OFFICERS,
EMPLOYEES,  AGENTS OR  AFFILIATES BE LIABLE TO THE OTHER PARTY FOR ANY INDIRECT,
INCIDENTAL, PUNITIVE, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES, WHETHER BASED
UPON A CLAIM OR ACTION OF CONTRACT,  WARRANTY,  NEGLIGENCE,  STRICT LIABILITY OR
OTHER TORT,  A PRODUCT  CLAIM,  OR  OTHERWISE  ARISING OUT OF OR RELATED TO THIS
AGREEMENT.

     Section 8.5 Insurance.

               (a) For the Term,  and for a period  of five (5) years  after the
          expiration of this Agreement or the earlier termination thereof,  both
          COLLAGENEX and URL/MUTUAL shall maintain at their respective sole cost
          and  expense,  product  liability  and  other  insurance  in  amounts,
          respectively,   which  are   reasonable   and  customary  in  the  USA
          pharmaceutical   industry  for  companies  of   comparable   size  and
          activities  at the  respective  places of business of  COLLAGENEX  and
          URL/MUTUAL, provided in no event shall the product liability insurance
          amounts be less than, with respect to MUTUAL,  10 Million U.S. Dollars
          (U.S.  $10,000,000)  per occurrence  (or claim),  and, with respect to
          URL, 1 Million U.S. Dollars (U.S. $1,000,000) per

                                       60



          occurrence  (or  claim).  Such  insurance  shall  insure  against  all
          liability,  including  personal injury,  product  liability,  physical
          injury, clinical development  liabilities,  or property damage arising
          out of the development,  manufacture, sale, distribution, or marketing
          of,  with  respect  to  COLLAGENEX,  COLLAGENEX  Supplied  Product  or
          Periostat, and, with respect to URL/MUTUAL COLLAGENEX Supplied Product
          or URL/MUTUAL Product. Each Party shall provide the other Party with a
          certificate of insurance  evidencing such insurance within thirty (30)
          days after the  Effective  Date and  annually  thereafter.  Foundation
          shall be named as an additional insured on each such insurance policy.

ARTICLE IX - MISCELLANEOUS

     Section 9.1 Assignment.  This Agreement may not be assigned by either Party
to a Third Party  without  the prior  written  consent of the other  Parties and
without the execution of a novation reasonably  acceptable to the other Parties;
provided,  however,  that each Party may, without such prior written consent and
without the execution of a novation,  assign, to any of its Affiliates,  all the
rights,  licenses and obligations of such Party under this  Agreement,  provided
that such Affiliate is fully capable of fulfilling the assigned rights, licenses
and  obligations,  in which event such assignment shall not be deemed to relieve
the assigning Party of its liabilities or obligations to the other Parties under
this Agreement,  and the assigning Party expressly  acknowledges and agrees that
it shall remain fully and unconditionally obligated and responsible for the full
and  complete  performance  of  all of  its  obligations  under  the  terms  and
conditions of this Agreement.  For the sake of clarity, the Parties agree that a
Change of Control of any Party shall not release such Party from its obligations
under this Agreement nor act to terminate this Agreement.  Any assignment not in
conformity   with  the   provisions   of  this   Section   9.1  shall  be  void.
Notwithstanding the foregoing, URL/MUTUAL agrees and acknowledges that


                                       61




COLLAGENEX  may use Third Parties to  manufacture,  label,  package and ship the
COLLAGENEX Supplied Product.

     Section 9.2  Counterparts.  This Agreement may be executed in any number of
counterparts,  including  originals and facsimile or scanned copies  transmitted
electronically,  each of which  shall be  deemed  an  original  but all of which
together shall constitute one and the same instrument.

     Section 9.3 Force Majeure. Neither Party shall lose any rights hereunder or
be liable to the other  Party for  damages  or losses on  account  of failure of
performance  of  any  obligation  (other  than  a  payment  obligation)  by  the
defaulting Party if the failure is occasioned by government  action or inaction,
war,  other  armed  hostilities,  fire,  explosion,  earthquake,  flood,  storm,
drought,  epidemics,  quarantine restrictions,  strike, lockout,  embargo, riot,
sabotage,  terrorism,  invasion, accidents, failure of public utilities, failure
or delay of transportation, unforeseeable shortage of materials or utilities, or
act of God,  provided  that the Party  claiming  force  majeure  has exerted all
reasonable  efforts to avoid or remedy such force  majeure;  provided,  however,
that in no event  shall a Party be  required  to  settle  any labor  dispute  or
disturbance.  Such excuse shall continue as long as the condition preventing the
performance  continues;  provided  that the  defaulting  Party will no longer be
excused once such condition  continues for more than 180 consecutive  days. Upon
cessation  of  such   condition,   the  affected  Party  shall  promptly  resume
performance hereunder.  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 to perform  its  obligations
hereunder.  The affected Party further  agrees to use all 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 its obligations.

                                       62



     Section  9.4  Further  Assurances.  Each Party  hereto  agrees to  execute,
acknowledge and deliver such further instruments and do all such further acts as
may be  necessary  or  appropriate  to carry out the purposes and intent of this
Agreement.

     Section 9.5 Modification.  No waiver,  alteration or modification of any of
the provisions  hereof shall be binding unless made in writing and signed by the
Parties by their respective officers thereunto duly authorized.

     Section  9.6   Independent   Contractors.   The  Parties  are   independent
contractors  and  this  Agreement  shall  not  constitute  or  give  rise  to an
employer-employee,  agency,  partnership or joint venture relationship among the
Parties  and  each  Party's  performance   hereunder  is  that  of  a  separate,
independent entity.

     Section  9.7  Governing  Law.  This  Agreement  shall  be  governed  by and
construed in accordance  with the laws of the State of New York,  without regard
to its conflicts of laws principles.

     Section 9.7A Dispute Resolution. Any dispute,  controversy or claim arising
out of or relating to this Agreement,  or the breach,  termination or invalidity
thereof, shall be resolved as follows:

               (a) If the senior  management of the Parties  cannot resolve such
          disputes  within ten (10)  Business  Days after either Party  requests
          such a meeting, then either Party may make a written demand for formal
          dispute resolution.

               (b) Within fifteen (15) Business Days after such written  demand,
          the Parties  agree to meet for one day with an impartial  mediator and
          consider  dispute  resolution  alternatives  other than  litigation or
          arbitration.  If an  alternative  method of dispute  resolution is not
          agreed


                                       63




          upon within seven (7) Business Days after such written demand, then at
          either Party's option,  dispute resolution may be pursued as described
          in (c).

               (c) Any dispute,  controversy or claim arising out of or relating
          to this Agreement,  or the breach,  termination or invalidity thereof,
          that cannot be settled pursuant to paragraphs (a) or (b), above, shall
          be resolved by a Party filing suit in the United States District Court
          for the Eastern  District  of New York  within  twenty (20) days after
          completion  of  alternative   dispute   resolution  efforts  conducted
          pursuant  to  paragraph  (b).  The  Parties  stipulate  and agree that
          personal  jurisdiction  for  resolution of any dispute or  controversy
          under this Agreement shall be proper,  and venue for resolution of any
          dispute or controversy under this Agreement shall reside  exclusively,
          in the United States  District  Court for the Eastern  District of New
          York. If suit is not timely filed, or if the court lacks  jurisdiction
          over the subject  matter of the  dispute,  then the  dispute  shall be
          settled by binding  arbitration  conducted in the English  language in
          New  York,  New  York,  by  one  (1)  arbitrator  experienced  in  the
          pharmaceutical  business and  mutually  agreeable  to  URL/MUTUAL  and
          COLLAGENEX,  under the  commercial  arbitration  rules of the American
          Arbitration   Association   ("AAA"),   which  shall   administer   the
          arbitration  and act as appointing  authority.  If the Parties  cannot
          agree on a single arbitrator within ten (10) Business Days, a panel of
          three (3) arbitrators experienced in the pharmaceutical business shall
          be selected  as  follows:  each of  COLLAGENEX,  on the one hand,  and
          URL/MUTUAL, on the other hand, shall appoint an arbitrator and the two
          (2) arbitrators so appointed shall jointly appoint a third arbitrator;
          provided,  however, that if they cannot agree (or if one Party refuses
          to appoint an arbitrator) within thirty (30) days after the initiation
          of the  arbitration,  then this third arbitrator shall be appointed by
          the  President  of the  AAA.  No  past  or  present  employee  of,  or
          consultant  to,  a  Party  or of any  Affiliate  of a Party  shall  be
          selected as an

                                       64




          arbitrator.  Disputes about arbitration procedure shall be resolved by
          the  arbitrators  or failing  agreement,  by the AAA in New York,  New
          York.  The  arbitrators  may proceed to an award  notwithstanding  the
          failure  of  the  other  Party  to  participate  in  the  proceedings.
          Discovery shall be limited to mutual exchange of documents relevant to
          the dispute,  controversy or claim; depositions shall not be permitted
          unless agreed to by both Parties. Each Party shall, within thirty (30)
          days from the date the panel is  complete,  submit to the panel and to
          the other Party a written  statement  presenting such Party's position
          on the issue.  The panel shall,  within thirty (30) days after receipt
          of both  Parties'  statements,  hold a joint  hearing  on the issue at
          which  each  Party will have an  opportunity  to make a  presentation,
          offer live testimony of witnesses and allow for cross-examination, and
          respond to the other Party's  presentation.  No  deposition  testimony
          will be considered or admitted in the arbitration. Within fifteen (15)
          days of the  conclusion  of the  hearing,  the panel shall  render its
          decision in writing,  provided that if the  arbitrators  are unable to
          render a decision  within such 15-day  period,  they shall render such
          decision  as soon  thereafter  as is  practicable.  All rulings of the
          arbitrators shall be in writing and shall be delivered to the Parties.
          The arbitrators shall be authorized to grant interim relief, including
          preventing  the  destruction  of goods or  documents  involved  in the
          dispute,  protect  trade  secrets  and  provide  for  security  for  a
          prospective   monetary  award.   Under  no  circumstances   shall  the
          arbitrators be authorized to award punitive damages, including but not
          limited to federal or state statutes  permitting  multiple or punitive
          damage awards.  Any purported award of punitive or multiple damages or
          of other damages not  permitted  under Section 8.4 shall be beyond the
          arbitrators' authority, void, and unenforceable. Each Party shall bear
          its own costs and attorneys fees expended in pursuing the arbitration.
          The award of the arbitrators shall be final and not


                                       65



          appealable, and shall be the sole and exclusive remedy of the Parties,
          enforceable in any court of competent jurisdiction.

     Section 9.8 Article  Headings.  The Article and Section headings are placed
herein merely as a matter of convenience  and shall not affect the  construction
or interpretation of any of the provisions of this Agreement.


     Section 9.9 Notices.  Notices  required or permitted  under this  Agreement
shall be in writing and sent by prepaid  registered  or certified air mail or by
overnight express mail (e.g.,  FedEx), or by telefacsimile  confirmed by prepaid
registered  or  certified  air mail letter or by  overnight  express mail (e.g.,
FedEx),  (failure  of such  confirmation  shall not affect the  validity of such
notice by telefacsimile to the extent the receipt of such notice is confirmed by
the act of the receiving  Party (e.g., a  telefacsimile  of the receiving  Party
submitting  its  receipt  of such  notice))  and  shall be  deemed  to have been
properly served to the addressee upon receipt of such written communication,  to
the following addresses of the Parties:

         If to URL/MUTUAL:
         ----------------

         President                              President
         Mutual Pharmaceutical Company, Inc.    United Research Laboratories
         1100 Orthodox Street                   1100 Orthodox Street
         Philadelphia, PA 19124-3131            Philadelphia, PA 19124-3131

         With a copy to:
         --------------
         Andrew M. Berdon, Esq.                 Andrew M. Berdon, Esq.
         QUINN EMANUEL, ET AL.                  QUINN EMANUEL, ET AL.
         335 Madison Avenue, 17th               335 Madison Avenue, 17th
         New York, New York 10017               New York, New York 10017

         If to COLLAGENEX:

         Colin Stewart
         COLLAGENEX PHARMACEUTICALS, INC.
         41 University Drive
         Newtown, Pennsylvania  18940


                                       66




         With a copy to:
         --------------
         James C. Burling, Esq.
         HALE AND DORR LLP
         60 State Street
         Boston, Massachusetts 02109


     Section 9.10 Third Parties.  None of the provisions of this Agreement shall
be for the benefit of or enforceable by any Third Party; provided, however, that
this  Agreement  shall  bind and  inure to the  benefit  of any  successors  and
permitted assigns of the Parties.

     Section 9.11 Waiver. The waiver by either Party of a breach or a default of
any  provision of this  Agreement by the other Party shall not be construed as a
waiver of any succeeding  breach of the same or any other  provision,  nor shall
any delay or omission on the part of either Party to exercise or avail itself of
any right,  power or privilege  that it has or may have  hereunder  operate as a
waiver of any right, power or privilege by such Party.

     Section  9.12  Severability.  If any  part of this  Agreement  is  declared
invalid by any  legally  governing  authority  having  jurisdiction  over either
Party, then such declaration shall not affect the remainder of the Agreement and
the Parties shall revise the invalidated  part in a manner that will render such
provision valid without impairing the Parties' original intent.

     Section  9.13  Entire  Agreement.  This  Agreement  constitutes  the entire
agreement  between  the  Parties  relating  to the  subject  matter  hereof  and
supersedes all previous writings and understandings  with respect to the subject
matter hereof. The terms of this Agreement shall supersede any conflicting terms
included in any purchase  order or invoice.  The Parties  agree and  acknowledge
that the Settlement  Agreement,  the Consent Agreement and the Stipulated Orders
are being executed on the Execution Date.

                    [signatures appear on the following page]

                                       67



     IN WITNESS  WHEREOF,  the Parties  hereto have caused this  Agreement to be
executed as of the Execution Date by their duly authorized representatives.



COLLAGENEX PHARMACEUTICALS, INC.



By:  /s/ Colin Stewart
    ------------------------------
         Duly Authorized


MUTUAL PHARMACEUTICAL COMPANY,          UNITED RESEARCH LABORATORIES,
INC.                                    INC.


By:/s/ Richard H. Roberts, M.D., Ph.D.   By:/s/ Richard H. Roberts, M.D., Ph.D.
   -----------------------------------      -----------------------------------
     Duly Authorized  Pres & CEO               Duly Authorized  Pres & CEO




                                       68




                                    EXHIBIT A

                          Price Adjustment Report Form
Attachment "A"
Section 3.2a.7.
Report to be filed for all customers  within [**] business days after the end of
each accounting month

                                   [attached]







Activity for April 2004                                                                                   Report Date: 05-10-2004

Customer # 123456
Customer Name: Customer #1
                          Invoice                                                                   Qty
       Invoice #           Date         NDC                      Description                      Shipped   U/P
- -----------------------------------------------------------------------------------------------------------------
                                                                  
                   11111   4/1/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   22222   4/6/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   33333  4/15/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   44444  4/22/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]

                                                 Total Current Month Shipments                      [**]


                                                 Prior Shipments                                      0

                                                 Total Current Month Shipments                      [**]

                                                 Total Bottles Remaining for Potential
                                                 Future Price Devaluation Events                    [**]

                                                 Price Change/Devaluation Event
                                                 Effective 05-01-2004                                       [**]

                                                 Customer Reported Inventory As Of
                                                 05-01-2004                                         [**]

                                                 Price Difference                                   [**]
                                                 Total Price Protection                             [**]

                                                 Customer Request Valid                                      Y

                                                 Total Bottles Remaining for Potential
                                                 Future Price Devaluation Events                    [**]

                                      A-1




Activity for April 2004      May-04                                                                       Report Date: 06-10-2004

Customer # 123456
Customer Name: Customer #1
                          Invoice                                                                   Qty
       Invoice #           Date         NDC                      Description                      Shipped   U/P
- -----------------------------------------------------------------------------------------------------------------
                   55555   5/2/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   66666   5/5/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   77777  5/18/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]
                   88888  5/25/2004    5348955001Doxycycline Hyclate Tablets USP 20mg               [**]    [**]

                                                 Total Current Month Shipments                      [**]


                                                 Prior Shipments/Reported Inventory                 [**]

                                                 Total Current Month Shipments                      [**]

                                                 Total Bottles Remaining for Potential
                                                 Future Price Devaluation Events                    [**]

                                                 Price Change Effective 05-01-2004                       [**]

                                                 Customer Reported Inventory                 [**]

                                                 Price Difference                            [**]
                                                 Total Price Protection                      [**]

                                                 Customer Request Valid                                    Y

                                                 Total Bottles Remaining for Potential
                                                 Future Price Devaluation Events                    [**]


                                      A-2