PALATIN TECHNOLOGIES INC
10KSB/A, 1999-12-28
IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES
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                     U.S. Securities and Exchange Commission

                             Washington, D.C. 20549


                                  FORM 10-KSB/A

                                 Amendment No. 1


(Mark One)

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

                     For the fiscal year ended June 30, 1999

[ ] TRANSITION REPORT UNDER SECTION 13 OR 15(D) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

         For the transition period from ____________ to _______________

                         Commission file number 0-22686

                           PALATIN TECHNOLOGIES, INC.
                 (Name of small business issuer in its charter)

    Delaware                                                    95-4078884
(State or other jurisdiction of                              (I.R.S. Employer
 incorporation or organization)                             Identification No.)

         214 Carnegie Center, Suite 100
         Princeton, New Jersey                                08540
         (Address of principal executive offices)           (Zip Code)

Issuer's telephone number: (609) 520-1911

Securities registered under Section 12(b) of the Exchange Act:  None

Securities registered under Section 12(g) of the Exchange Act:

                     Common Stock, par value $.01 per share
                                (Title of class)

Check whether the issuer (1) filed all reports required to be filed by Section
13 or 15(d) of the Exchange Act during the past 12 months (or for such shorter
period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days. Yes X   No

Check if there is no disclosure of delinquent filers in response to Item 405 of
Regulation S-B contained in this form, and no disclosure will be contained, to
the best of the registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-KSB or by any
amendment to this Form 10-KSB. [ ]

The issuer's revenues for its fiscal year ended June 30, 1999 were $609,977.

<PAGE>


The aggregate market value of the voting and non-voting common equity held by
non-affiliates computed by reference to the price at which the common equity was
sold, or the average bid and asked price of such common equity, as of September
27, 1999, was $22,334,357.

As of September 27, 1999, 7,240,329 shares of the registrant's common stock, par
value $.01 per share, were outstanding.

Documents incorporated by reference:  not applicable

Transitional Small Business Disclosure Format (check one):  Yes       No  X



<PAGE>


                                TABLE OF CONTENTS



                                     PART I

                                                                            Page

Item  1.  Description of Business                                             1

Item  2.  Description of Property                                            15

Item  3.  Legal Proceedings                                                  15

Item  4.  Submission of Matters to a Vote of Security Holders                15



                                     PART II

Item  5.  Market for Common Equity and Related Stockholder Matters           16

Item  6.  Management's Discussion and Analysis or Plan of Operations         18

Item  7.  Financial Statements                                               22

Item  8.  Changes In and Disagreements With Accountants on Accounting
                  and Financial Disclosure                                   22


                                    PART III

Item  9.  Directors, Executive Officers, Promoters and Control Persons;
                  Compliance with Section 16(a) of the Exchange Act          22

Item 10.  Executive Compensation                                             25


Item 11.  Security Ownership of Certain Beneficial Owners and Management     33

Item 12.  Certain Relationships and Related Transactions                     37

Item 13.  Exhibits and Reports on Form 8-K                                   38



Signatures                                                                   42




Financial Statements                                                        F-1



<PAGE>


         PART I

Forward-looking statements


     We make forward-looking statements in this report and the documents we
incorporate by reference. Sometimes these statements contain words such as
"anticipates," "plans," "intends," "expects" and similar expressions to identify
forward-looking statements. These statements are not guarantees of our future
performance. Our business involves known and unknown risks, uncertainties and
other factors which may cause our actual results, performance or achievements to
be materially different from what we say in this report and in the documents
we incorporate by reference. Given these uncertainties, you should not place
undue reliance on these forward-looking statements, which speak only as of the
date of this report. We will not revise these forward-looking statements to
reflect events or circumstances after the date of this report or to reflect the
occurrence of unanticipated events.


Item 1.  Description of Business.

Overview

     We are in the early stages of developing pharmaceutical products and
technologies. We are concentrating our efforts on the following:

     o    LeuTech(TM), a diagnostic imaging product used to image and locate the
          site of infection or inflammation within the body. We have completed
          clinical trials with LeuTech for the diagnosis of appendicitis and
          expect to file an application with the United States Food and Drug
          Administration for approval to market LeuTech for diagnosis of
          appendicitis in the last quarter of 1999. We are conducting additional
          clinical trials with LeuTech to diagnose bone infections and
          infections of prostheses, or artificial body parts. We believe that
          LeuTech can also be used to diagnose a wide range of other infections,
          including infections of the intra-abdominal area, such as intestinal,
          spleen, liver or urinary tract infections.

     o    PT-14, a drug to treat sexual dysfunction, primarily male erectile
          dysfunction. PT-14 is a stabilized peptide that works like a natural
          hormone. A peptide is a short chain of amino acids. PT-14 is in the
          early stages of clinical trials.

     o    MIDAS(TM), a peptide technology which may be useful to develop drugs
          to treat diseases or for diagnostic imaging. We are engaged in
          research and development of this technology to diagnose infections and
          to treat obesity, and believe that this technology may have
          applications in a variety of other areas as well, including immune
          disorders, cancers and cardiology.

Products and technologies in research and development

     LeuTech. The LeuTech kit system, which uses our direct radiolabeling
technology, is a mouse monoclonal antibody-based product. LeuTech has been
formulated as a lyophilized, or freeze-dried, kit containing the modified
antibody and reagents required for the radiolabeling

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process. Prior to use, LeuTech will be labeled with technetium-99m by a
radiopharmacy or by a hospital's nuclear medicine department. After labeling,
LeuTech is administered to the patient by intravenous injection, and rapidly
binds to white blood cells present at the site of the infection or circulating
in the blood stream. Using LeuTech, physicians can take a definitive image
within 90 minutes of administration, permitting rapid imaging and detection of
the site of infection.

     Examples of typical occult abscesses include infections of the
intra-abdominal area, such as intestinal, spleen, liver or urinary tract
abscesses, as well as bone, prosthetic and other abscesses. As part of the
body's immune response to an infection, large numbers of white blood cells
migrate to and collect at the site of the infection. The concentration of white
blood cells at the site of the infection can be used as the basis of detection.
By using an agent such as LeuTech, which "tags" or labels the white blood cells
with radioactivity, the site of the infection can be readily detected using a
gamma camera.

     The most specific procedure currently available for the nuclear medicine
imaging of sites of infection involves white blood cells labeled with
radioactivity outside of the patient's body. This white blood cell labeling
procedure begins with the removal of blood from the patient, isolating white
blood cells from the patient's blood, radiolabeling the white blood cells and
injecting the radiolabeled white blood cells back into the patient. The
radiolabeled white blood cells then localize at the site of the infection, and
can be detected using a gamma camera. This procedure is expensive, involves
risks to patients and technicians associated with blood handling, and generally
takes between eight and twelve hours to generate a diagnostically useful image.

     In order to understand the process of drug testing and approval, it is
helpful to be familiar with the following terminology of clinical trial phases
and FDA applications:

     Preclinical testing: animal trials to evaluate toxicity.

     Phase 1: clinical tests on patients to evaluate drug safety.

     Phase 2: clinical tests on patients to evaluate drug effectiveness.

     Phase 3: clinical tests on patients to evaluate drug safety, dosage and
     effectiveness.

     Investigational new drug application: report on preclinical and clinical
     testing, with manufacturing and labeling information.

     Biologics license application: application for FDA approval for sale of a
     product classified as a biologic.

     New drug application: application for FDA approval for sale of a product
     classified as a drug.

     We submitted an investigational new drug application to the FDA on LeuTech
for diagnosis of appendicitis, and we have completed Phase 1, 2 and 3 clinical
trials.

     Our Phase 1 clinical trial tested the safety and biodistribution of
LeuTech. In that study, LeuTech was administered to 10 healthy volunteers who
were monitored for adverse events. The

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results showed that there were no significant safety concerns associated with
LeuTech administration.

     In our Phase 2 clinical trial, we evaluated LeuTech for its ability to
diagnose equivocal appendicitis. The Phase 2 clinical trial enrolled 56 patients
with a preliminary diagnosis of equivocal appendicitis at two medical centers.
In the study, the commercial preparation of LeuTech demonstrated 88% accuracy
and 100% sensitivity in the diagnosis of equivocal appendicitis.

     In July 1998, we met with representatives of the FDA to discuss the LeuTech
Phase 2 clinical results and to discuss the LeuTech Phase 3 clinical trials
protocol. As a result of this meeting, we submitted a Phase 3 protocol and began
Phase 3 clinical trials for the diagnosis of equivocal appendicitis in September
1998. We completed Phase 3 clinical trials in the spring of 1999.

     In May 1999, we met with representatives of the FDA to discuss the LeuTech
Phase 3 clinical results and to discuss filing a biologics license application
for approval to market LeuTech for diagnosis of equivocal appendicitis. We are
preparing the biologics license application, which we expect to file in the
1999.

     We have conducted small-scale LeuTech trials in other infectious
indications. We have obtained LeuTech images in indications such as
osteomyelitis, abdominal abscesses, and pulmonary infections. In many cases,
researchers were able to obtain LeuTech diagnostic images in under one hour. We
commenced Phase 2 clinical trials in February 1999 for detection of
osteomyelitis and intend to commence Phase 2 clinical trials in the coming year
for osteomyelitis in infected prostheses, osteomyelitis in diabetic mid- and
hind-foot ulcers, occult abscesses, pediatric doses in equivocal appendicitis as
well as safety studies on the risks of repeat doses in the presence of human
anti-mouse antigens.

     Strategic collaboration agreement with Mallinckrodt, Inc. As of August 17,
1999, we entered into a strategic collaboration agreement with Mallinckrodt,
Inc., a large international healthcare products company, to jointly develop,
manufacture, market and sell LeuTech. Under the terms of the agreement,
Mallinckrodt:

     o    received an exclusive worldwide license (excluding Europe) for sales,
          marketing and distribution of LeuTech and paid a licensing fee of
          $500,000;

     o    agreed to make milestone payments totaling $10,000,000 upon FDA
          approval of the first LeuTech indication and upon the attainment of
          certain sales goals following product launch;

     o    agreed to reimburse Palatin for 50% of all ongoing LeuTech development
          costs, subject to a cap, which can be amended;

     o    agreed to pay to Palatin a transfer price for each LeuTech product
          unit delivered to Mallinckrodt and a quarterly royalty on
          Mallinckrodt's future net sales of LeuTech;

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<PAGE>

     o    purchased 700,000 restricted shares of Palatin's non-voting Series C
          convertible preferred stock for $13,000,000;

     o    agreed that the Series C convertible preferred stock purchased by them
          would be convertible after five years, or earlier upon the occurrence
          of a change in control in Palatin (as defined in the agreement), into
          700,000 shares of our common stock with certain registration rights
          and anti-dilution rights;

     o    agreed to the oversight of LeuTech development and marketing
          activities by a joint steering committee, comprised of equal numbers
          of representatives to be appointed by each of Palatin and
          Mallinckrodt;

     o    agreed to the potential termination of the agreement by either party
          in the event of material breach or nonpayment by the other party and
          the expiration of the agreement after the commercial sale of LeuTech
          ceases;

     o    agreed that if the agreement was validly terminated by Palatin before
          its expiration due to a material breach or nonpayment by Mallinckrodt,
          then, among other things, all licenses granted to Mallinckrodt will be
          terminated, Mallinckrodt will assign to Palatin any interest they may
          have in any trademarks used to market LeuTech as well as any
          regulatory filings they may have made in connection with LeuTech and
          Mallinckrodt will continue to pay Palatin royalty on the sale of any
          inventory they may have the right to dispose of; and

     o    agreed that if the agreement was validly terminated by Mallinckrodt
          before its expiration due to a material breach or nonpayment by
          Palatin, then, among other things, all licenses granted to
          Mallinckrodt under the terms of the agreement will be considered
          exclusive and irrevocable, Palatin shall transfer to Mallinckrodt all
          contractual and intellectual property rights necessary for the
          production of LeuTech in quantities sufficient to meet Mallinckrodt's
          needs, and Mallinckrodt shall continue to pay Palatin royalty on all
          sales of LeuTech.


     PT-14. PT-14 is a stabilized peptide analog of the natural hormone
alpha-MSH. We are developing it for the treatment of male erectile dysfunction.
We believe that PT-14 will be different from currently available treatments for
male erectile dysfunction because its mechanism of action is through receptors
found in the brain, as compared to a direct effect on blood flow to the penis.
PT-14 may be useful in treating patients who do not respond well to current
therapies. In a double-blind clinical study using PT-14 conducted under an
investigational new drug application submitted to the FDA and held in the name
of an investigator at the University of Arizona, eight out of ten men achieved
clinically significant erectile response. We intend to further evaluate PT-14
for male erectile dysfunction in a larger patient population. The Phase 2
clinical trial, which we expect to begin in the fall of 1999, will enroll 45 new
subjects. In addition, we will also support a study of ten men whose prostates
have been surgically removed. We expect to conduct that study in the fall of
1999.

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<PAGE>

     We have entered into an exclusive royalty-bearing license agreement with
Competitive Technologies, Inc. to develop and market PT-14. PT-14 is currently
administered as a non-penile subcutaneous injection. We have initiated
development efforts on an oral delivery formulation of PT-14. In March 1998, we
entered into a license and development agreement with TheraTech, Inc., which
included a license to some patents owned by TheraTech, to collaboratively
develop an oral transmucosal delivery system for PT-14. We are in discussions
with TheraTech relating to the termination of the license and development
agreement. During these discussions, no additional work is being done with
TheraTech.


     MIDAS Technology. MIDAS is a novel peptide chemistry that may have broad
applications in the pharmaceutical and radiopharmaceutical industries. The MIDAS
technology combines a metal ion with a specially designed peptide, resulting in
a biologically active molecule. Peptides, which are short chains of amino acids,
play important roles in regulating a variety of biological functions. Natural
peptides function by conforming or bending to fit specific molecules on cell
surfaces, called receptors, thereby signaling the cell to initiate a biological
activity. Some important biological functions that are affected in this manner
include overall growth and behavior, inflammatory responses, immune responses
and wound healing.

     In order to effectively regulate cell signaling, a peptide must bind to its
target receptor with high affinity. The affinity of a peptide for its target
receptor is highly dependent on its three-dimensional shape or conformation.
Many naturally occurring peptides are flexible and can take on multiple
conformations, allowing them to interact with more than one type of cell
receptor, and to control multiple functions within the body. However, when such
peptides are used as drugs, this multiple reactivity is a disadvantage as it may
potentially lead to side effects. The ability to construct high-affinity,
receptor-specific peptides offers a significant opportunity to develop potent
receptor-specific drugs.

     We believe that our patent-pending MIDAS technology can be used to
rationally design and produce receptor-specific drugs. Using MIDAS, highly
stable metallopeptide complexes are formed, in which the metal ion locks or
constrains the peptide into a specific conformation. By designing MIDAS peptides
to mimic the conformation required for a specific receptor, a stable,
receptor-specific drug, with high affinity and enhanced biological activity, can
be made. Radiopharmaceutical products, which may be diagnostic or therapeutic,
may be developed using radioactive metal ions in MIDAS peptides. Non-radioactive
metal ions may be used in the development of biopharmaceutical MIDAS peptides.

     We are engaged in research and development on a number of product
opportunities for our MIDAS technology, including use of peptide molecules for
diagnosis of infection and for treatment of obesity. We believe that MIDAS
technology may have medical applications in a variety of areas, including immune
disorders, cancers and cardiology. We intend to seek to enter into strategic
alliances or collaborative arrangements to provide additional financial and
technical resources for MIDAS development.

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     Agreement with Nihon Medi-Physics. In 1996, we entered into a license
option agreement with Nihon Medi-Physics Co. Ltd., a large Japanese
pharmaceutical company. We received an initial payment of $1,000,000, before
Japanese withholding taxes of $100,000. On December 29, 1998, we terminated our
license option agreement with Nihon by mutual agreement.


Patents and Proprietary Information

     Patent protection. Our success will depend in substantial part on our
ability to obtain, defend and enforce patents, maintain trade secrets and
operate without infringing upon the proprietary rights of others, both in the
United States and abroad. We aggressively seek patent protection for our
technology in the United States and, selectively, in those foreign countries
where protection is important to the development of our business.

     Our patents and pending applications are directed to radiolabeling of
antibodies, antibody fragments, and peptides; MIDAS peptides; peptide
pharmaceuticals; and to methods for making and using the foregoing in diagnostic
and therapeutic applications. We own or have rights to 24 United States patents,
seven pending United States patent applications and foreign patents and
applications in selected foreign countries corresponding to certain United
States patents and applications.

     In the event a third party has also filed a patent application relating to
an invention we claimed in a patent application, we may be required to
participate in an interference proceeding adjudicated by the United States
Patent and Trademark Office ("PTO") to determine priority of invention. The
possibility of an interference proceeding could result in substantial
uncertainties and cost, even if the eventual outcome is favorable to us. An
adverse outcome could result in our losing patent protection for the subject of
the interference, subject us to significant liabilities to third parties and
require us to obtain licenses from third parties at undetermined cost or to
cease using the technology.

     Future patent infringement. Patents which would be infringed by our
commercial activities might not have yet been issued. We may be unable to avoid
infringement of any such patents and may have to seek a license, defend an
infringement action, or challenge the validity of such patents in court. Patent
litigation is costly and time consuming. If we do not obtain a license under any
such patents, are found liable for infringement, or if such patents are not
found to be invalid, we may be liable for significant money damages, may
encounter significant delays in bringing products to market, or may be precluded
from participating in the manufacture, use or sale of products or methods of
treatment covered by such patents.

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<PAGE>

     Government rights. Some of our patents are directed to inventions developed
internally or within academic institutions from which we earlier acquired rights
to such patents with funds from United States government agencies. As a result
of these arrangements, the United States government may have rights in certain
inventions developed during the course of the performance of federally funded
projects, as required by law or agreements with the funding agency.

     Proprietary information. We rely on proprietary information, such as trade
secrets and know-how, which is not patented. We have taken steps to protect our
unpatented trade secrets and know-how, in part through the use of
confidentiality agreements with our employees, consultants and certain of our
contractors. If our employees, scientific consultants or collaborators or
licensees develop inventions or processes independently that may be applicable
to our product candidates, disputes may arise about ownership of proprietary
rights to those inventions and processes. Such inventions and processes will not
necessarily become our property, but may remain the property of those persons or
their employers. Protracted and costly litigation could be necessary to enforce
and determine the scope of our proprietary rights.


Governmental Regulation

     The FDA, comparable agencies in foreign countries and state regulatory
authorities have established regulations and guidelines which apply, among other
things, to the clinical testing, manufacturing, safety, efficacy, labeling,
storage, record keeping, advertising, promotion and marketing of our proposed
products. Noncompliance with applicable requirements can result in fines,
recalls or seizures of products, total or partial suspension of production,
refusal of the regulatory authorities to approve marketing applications, and
criminal prosecution.

     After approving a product for marketing, the FDA may require post-marketing
testing, including extensive Phase 4 studies, and surveillance to monitor the
effects of the product in general use. The FDA may withdraw product approvals if
compliance with regulatory standards is not maintained or if problems occur
following initial marketing. In addition, the FDA may impose restrictions on the
use of a drug that may limit its marketing potential.

     Good manufacturing practices. In addition to obtaining either a biologics
license application or new drug application approval from the FDA for any of our
proposed products, if the proposed product is manufactured in the United States,
the drug manufacturing establishment must be registered with, and inspected by,
the FDA. Such drug manufacturing establishments are subject to biennial
inspections by the FDA, and must comply with good manufacturing practices
regulations enforced by the FDA. To supply products for use in the United
States, foreign manufacturing establishments must comply with good manufacturing
practices and are subject to periodic inspection by the FDA or by corresponding
regulatory agencies in such other countries under reciprocal agreements with the
FDA. In complying with standards established by the FDA, manufacturing
establishments must continue to expend time, money and effort in the areas of
production and quality control to ensure full technical compliance. Components
of LeuTech are manufactured by contract manufacturing establishments both in the
United States

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and in foreign countries, and we anticipate that PT-14 and proposed products
resulting from MIDAS technology will be manufactured by contract manufacturing
establishments.


Third-party Reimbursements

     Successful sales of our proposed products in the United States and other
countries will depend on the availability of adequate reimbursement from
third-party payors such as governmental entities, managed care organizations and
private insurance plans. Reimbursement by a third-party payor may depend on a
number of factors, including the payor's determination that use of a product is
safe and efficacious, neither experimental nor investigational, medically
necessary, appropriate for the specific patient and cost effective. Since
reimbursement approval is required from each payor individually, seeking such
approvals is a time-consuming and costly process. Third-party payors routinely
limit reimbursement coverage and in many instances are exerting significant
pressure on medical suppliers to lower their prices. There is significant
uncertainty concerning third-party reimbursement for the use of any
pharmaceutical product incorporating new technology, and we are not sure whether
third-party reimbursement will be available for our proposed products, or that
such reimbursement, if obtained, will be adequate. Less than full reimbursement
by governmental and other third-party payors for our products would adversely
affect the market acceptance of these products. Further, health care
reimbursement systems vary from country to country, and we are not sure whether
third-party reimbursement will be made available for our proposed products under
any other reimbursement system.


Manufacturing and Marketing

     To be successful, our products must be manufactured in commercial
quantities under good manufacturing practices requirements prescribed by the FDA
and at acceptable costs. We do not have the facilities to manufacture any
products in commercial quantities under good manufacturing practices. We intend
to rely on collaborators, licensees or contract manufacturers for the commercial
manufacture of our products.

     We have no ability or capacity to manufacture LeuTech. We are dependent on
Dutch State Mines of the Netherlands for the manufacture of the antibody used in
LeuTech, and on Ben Venue Laboratories of Cleveland, Ohio for the manufacture of
LeuTech kits. The failure of either of these manufacturers to supply these key
components of LeuTech on a timely basis or at all, could force us to seek
alternative sources of supply and could interfere with our ability to deliver
product on a timely basis. Establishing relationships with new suppliers, any of
whom must be FDA-approved, can be a time-consuming and costly process.

     If LeuTech is approved for marketing by the FDA, we expect to rely on
arrangements with other companies, such as Mallinckrodt, to market, sell and
distribute LeuTech. We may have difficulty establishing the necessary marketing
capability, and in any event, we will have

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<PAGE>

limited control over these activities. If we do not establish sufficient
marketing capability with other companies, our potential revenues from the sale
of LeuTech will be adversely affected.

     Proposed products resulting from MIDAS technology and PT-14 are synthetic
peptides. The peptides are synthesized from readily available amino acids, and
the production process involves well-established technology. We currently
contract with third-party manufacturers for the production of peptides and
anticipate doing so in the future.

     We intend to package and ship our radiopharmaceutical products in the form
of non-radioactive kits. Prior to patient administration, the product would be
radiolabeled with the specified radioisotope, generally by a specialized
radiopharmacy. We do not intend to sell or distribute any radioactive substance.


Product Liability and Insurance

     Our business may be affected by potential product liability risks which are
inherent in the testing, manufacturing and marketing of our proposed products.
We have liability insurance providing up to $5,000,000 coverage per occurrence
and in the aggregate as to certain clinical trial risks, and we will seek to
obtain additional product liability insurance before the commercialization of
our products.


Important Factors Affecting Our Business

     The following important factors, among others, could cause our actual
results, performance or achievements, or industry results, to differ materially
from those which we express in forward-looking statements in this report or in
other materials from time to time.

Development  and  commercialization  of our proposed  products and  technologies
involves  a lengthy,  complex  and costly  process  and we may never  develop or
commercialize any products.

     Our proposed products are at various stages of research and development and
may never be successfully developed or commercialized. LeuTech will require
final regulatory approval to market it for diagnosis of appendicitis, and it
will require additional clinical trials for other indications. PT-14 and MIDAS
technology will require significant further research, development and testing.
You should evaluate us in light of the uncertainties, delays, difficulties and
expenses commonly experienced by early stage pharmaceutical companies, which
generally include unanticipated problems and additional costs relating to:

     o    the development and testing of products in animals and humans

     o    product approval or clearance

     o    regulatory compliance

     o    good manufacturing practices

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     o    product introduction

     o    marketing and competition.


We expect our losses to increase  over the next  several  years and we may never
become profitable.

     We have never been profitable and we may never become profitable. As of
June 30, 1999, we had an accumulated deficit of $35,322,364. We anticipate
substantial and increasing losses over the next several years as we begin to
manufacture and market LeuTech for diagnosis of appendicitis, expand clinical
trials for LeuTech's other indications and for PT-14, and continue research and
development of PT-14 and MIDAS technology.



If we do not obtain additional funds our business will suffer.

     We are currently spending approximately $850,000 each month on research,
development and administrative costs. Based on that expenditure level, we
currently have enough money to continue operations through December 31, 2000,
including funds received pursuant to the strategic collaboration agreement with
Mallinckrodt. If adequate funds are not available when needed, we may be forced
to cease operating, or limit the scope of our research and development.

We expect to sell additional equity securities which would cause dilution.

     We expect to sell more equity securities in the future to obtain operating
funds. We may sell these securities at a discount to the market price. Any
future sales of equity securities will dilute the holdings of existing
stockholders.


We could lose our rights to LeuTech and PT-14,  which would adversely affect our
potential revenues and could result in a loss of your investment.

     Our rights to a key antibody used in LeuTech are dependent upon an
exclusive license agreement with The Wistar Institute of Biology and Anatomy.
Our rights to PT-14 are dependent upon an exclusive license agreement with
Competitive Technologies, Inc. These agreements contain specific performance
criteria and require us to pay royalties and make milestone payments. Failure to
meet these requirements, or any other event of default under the license
agreements, could lead to termination of the license agreements. If a license
agreement is terminated we may be unable to make or market the covered product,
in which case we may lose the value of our substantial investment in developing
the product, as well as any future revenues from selling the product. If we were
to lose rights to LeuTech, our lead product, the negative impact would be
especially severe.

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The FDA may not approve the marketing of LeuTech for diagnosis of  appendicitis,
which would adversely  affect our potential  revenues and could result in a loss
of your investment.

     We recently completed clinical trials with LeuTech for the diagnosis of
appendicitis and expect to file an application with the FDA for approval to
market LeuTech for diagnosis of appendicitis. Preparation of the LeuTech license
application and subsequent FDA review can be a long, expensive and uncertain
process. The application must demonstrate that LeuTech has met rigorous
standards of safety, efficacy and manufacturing before it can be approved by the
FDA for commercial use. Failure to obtain regulatory approval of LeuTech, or
delays in obtaining regulatory approval of LeuTech, would eliminate or delay our
potential revenues from sales of LeuTech. This could make it more difficult to
attract investment capital for funding our other research and development
projects.


Competing  products and  technologies  may make LeuTech and our other  potential
products noncompetitive.

     We are aware of one company developing an antibody-based product which may
compete with LeuTech as to certain indications. The competing product is
marketed in some European countries and regulatory approval is pending in the
United States. We are also aware of at least one other company developing a
peptide-based product which may also compete with LeuTech as to certain
indications. In addition, other technologies may also be used to diagnose
appendicitis, including computerized tomography or CT scan, and ultrasound
technologies.

     We are aware of at least three products developed by other companies for
the treatment of male erectile dysfunction that have obtained FDA marketing
approval, and we are aware of other products that are at a later stage of
development than PT-14. We are also aware of a number of companies developing
technologies relating to the use of peptides as drugs, including a variety of
different approaches to making conformationally constrained peptides.

     The pharmaceutical industry is highly competitive. We are likely to
encounter significant competition with respect to LeuTech and our other
potential products. Many of our competitors have substantially greater financial
and technological resources than we do. Many of them also have significantly
greater experience in research and development, marketing, distribution and
sales than we do. Accordingly, our competitors may succeed in developing,
marketing, distributing and selling products and underlying technologies more
rapidly than we can. These competitive products or technologies may be more
effective and useful and less costly than LeuTech or our other potential
products. Academic institutions, hospitals, governmental agencies and other
public and private research organizations are also conducting research and may
develop competing products or technologies on their own or through strategic
alliances or collaborative arrangements.

                                       11

<PAGE>

Contamination  or injury from  hazardous  materials  used in the  development of
LeuTech,  PT-14 and MIDAS could  result in  liability  exceeding  our  financial
resources.

     Our research and development of LeuTech, PT-14 and MIDAS involves the use
of hazardous materials and chemicals, including radioactive compounds. We cannot
completely eliminate the risk of contamination or injury from these materials.
In the event of contamination or injury, we may be responsible for any resulting
damages. Damages could be significant and could exceed our financial resources,
including the limits of our insurance.

Conflicts of interest  may arise  because some of our  officers,  directors  and
consultants work for other companies.

     Some of our officers, directors and consultants currently serve and will
continue to serve as officers, directors or consultants of other pharmaceutical
or biotechnology companies. In particular, Edward J. Quilty, our chief executive
officer and a director, and Stephen T. Wills, our chief financial officer, hold
similar positions with Derma Sciences, Inc., a publicly traded company in the
business of selling wound care devices. Carl Spana, Ph.D., our chief technology
officer and a director, is a director of Avax Technologies, Inc., a publicly
traded medical technology company. It is possible that such other companies will
have interests which conflict with our interests, in which case we may lose
business opportunities and/or the services of one or more officers, directors or
consultants.


Our stock price has ranged from $7.125 to $1.375 over the last 12 months, and we
expect it to remain volatile,  which could limit  stockholders'  ability to sell
stock at a premium.

     The volatile price of our stock makes it difficult for stockholders to
predict the value of their stock, to sell shares at a profit at any given time,
or to plan purchases and sales in advance. A variety of factors may affect the
market price of our common stock. These include, but are not limited to:

     o    continued operating losses

     o    announcements of technological innovations or new therapeutic products

     o    announcement or termination of collaborative relationships by us or
          our competitors

     o    FDA approval or disapproval for marketing LeuTech

     o    governmental regulation

     o    clinical trial results

     o    developments in patent or other proprietary rights

     o    public concern as to the safety of products we develop

     o    general market conditions.

                                       12

<PAGE>

Trading in our stock over the last 12 months has been limited,  so  stockholders
may not be able to sell as much stock as they want at prevailing prices.

     The average daily trading volume in our common stock was approximately
61,000 shares and the average daily number of transactions was approximately 65
over the last 12 months. If limited trading in our stock continues, it may be
difficult for stockholders to sell their shares in the public market at any
given time at prevailing prices.


Our management and principal  stockholders  together control over a third of our
voting  securities,  a concentration of ownership which could delay or prevent a
change in control.

     Our executive officers, directors and 5% or greater stockholders together
control approximately 44% of our voting securities. These stockholders, acting
together, will be able to influence and possibly control most matters submitted
for approval by our stockholders, including the election of directors, delaying
or preventing a change of control, and the consideration of transactions in
which stockholders might otherwise receive a premium for their shares over then
current market prices.


There are in excess of 6,000,000 shares of common stock  underlying  outstanding
derivative securities which, if exercised or converted, could decrease the value
of your shares.

     As of September 27, 1999, holders of our outstanding derivative securities
have the right to acquire the following amounts of underlying common stock:

     o    1,199,514 shares issuable on conversion of convertible preferred
          stock, for no further consideration

     o    2,572,679 shares issuable on exercise of warrants, at exercise prices
          ranging from $.22 to $8.68 per share

     o    2,198,408 shares issuable on exercise of stock options, at exercise
          prices ranging from $.20 to $21.70 per share

     The sale or availability for sale of the underlying shares in the
marketplace could depress our stock price. We have registered for resale almost
all of the shares underlying preferred stock and warrants, and we have
registered or expect to register almost all of the shares underlying options. As
a result, many of the underlying shares could be resold immediately upon
issuance, resulting in downward pressure on our stock price.


Industry-wide factors could adversely affect our business.

     In addition to the factors associated specifically with our business as
described in this report, stockholders should also be aware of other general
factors associated with drug development and the pharmaceutical industry. These
include but are not limited to:

                                       13

<PAGE>

     o    success of clinical trials

     o    ability to secure patent protection

     o    patent disputes

     o    ability to attract and retain qualified management, scientific and
          technical personnel and/or consultants

     o    recall of products

     o    acceptance of products by the medical community

     o    insuring against product liability claims.



Employees

     As of June 30, 1999, we employed 26 persons full time, of whom 20 were
engaged in research and development activities and six were engaged in
administration and management. Eight of our employees hold Ph.D. degrees. From
time to time, we hire scientific consultants to work on specific research and
development programs. We have been successful in attracting skilled and
experienced scientific personnel, however, competition for personnel in our
industry is intense.

     None of our employees is covered by a collective bargaining agreement. Our
employees have executed confidentiality agreements. We consider relations with
our employees to be good.

     We rely on independent organizations, advisors and consultants to provide
services, including most aspects of manufacturing and some aspects of regulatory
approval and clinical management. Our independent advisors and consultants
generally sign agreements that provide for confidentiality of our proprietary
information.


History and Merger

     Interfilm, Inc. Palatin was incorporated as a Delaware corporation on
November 21, 1986 under the name of Cinedco, Inc., which it later changed to
Interfilm, Inc. From 1993 to 1995, Interfilm was primarily engaged in the
interactive motion picture business. Interfilm suspended its business activities
in May 1995.

     RhoMed merger. On June 25, 1996, Interfilm merged with RhoMed Incorporated,
a New Mexico corporation engaged in biotechnology research and development. All
of RhoMed's outstanding equity securities were exchanged for equity securities
of Palatin. The business of RhoMed became the ongoing business of Palatin.
RhoMed remains as a wholly-owned, inactive subsidiary of Palatin.

     New name and capital restructuring. On July 19, 1996, we amended our
certificate of incorporation to:

                                       14

<PAGE>

     o    change our name from Interfilm, Inc. to Palatin Technologies, Inc.,

     o    increase our authorized common stock from 10,000,000 to 25,000,000
          shares, and

     o    effect a 1-for-10 reverse split of the common stock.

On September 5, 1997, we again amended our certificate of incorporation, to:

     o    increase our authorized common stock from 25,000,000 to 75,000,000
          shares,

     o    increase our authorized preferred stock from 2,000,000 to 10,000,000
          shares, and

     o    effect a 1-for-4 reverse split of the common stock.



Item 2.  Description of Property.

     Our executive offices are located at 214 Carnegie Center, Suite 100,
Princeton, New Jersey, where we lease approximately 4,000 square feet under a
lease which expires July 31, 2002. Our research and development facility is
located in Edison, New Jersey, where we lease approximately 10,500 square feet,
with an option on additional space, under a lease which expires July 31, 2007.
The properties we lease are in good condition.



Item 3.  Legal Proceedings.

     We are involved in various claims and litigation arising in the normal
course of business, consisting of actions commenced against Palatin prior to the
RhoMed merger. We believe that the outcome of such claims and litigation will
not have a material adverse effect on our business.



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

     At our annual stockholders meeting which convened on June 17, 1999, the
stockholders elected the following seven nominees as directors, with the votes
indicated:

           Nominee:                      Votes for:           Votes Withheld:
           --------                      ----------           ---------------
Edward J. Quilty                          6,210,986                44,174
Charles Putnam                            6,210,986                44,174
Carl Spana                                6,210,986                44,174
James T. O'Brien                          6,210,986                44,174
John K. A. Prendergast                    6,210,986                44,174
Robert G. Moussa                          6,210,986                44,174

                                       15

<PAGE>
           Nominee:                      Votes for:           Votes Withheld:
           --------                      ----------           ---------------
Robert K. deVeer, Jr.                     6,210,986                44,174

     The stockholders also approved amendments to our 1996 stock option plan.
These amendments, which the board of directors had previously approved,

     o    increased the number of shares of common stock available under the
          plan from 625,000 to 2,500,000 and

     o    permit options to remain valid more than 90 days after the option
          holder ceases to be an employee, director or consultant.

     The stockholders also ratified the appointment of Arthur Andersen LLP as
our auditors for the fiscal year ended June 30, 1999. The votes on the option
plan amendments and auditors were as follows:

<TABLE>
<CAPTION>
    Item of business:          Votes for:         Votes Against:        Abstentions:          Broker non-votes:
    -----------------          ----------         --------------        ------------          -----------------
<S>                             <C>                   <C>                  <C>                    <C>
Option plan amendments          3,307,238             424,119              32,780                 2,491,023
Appointment of auditors         6,206,279             33,870               15,011                     0

</TABLE>



                                     PART II



Item 5.  Market for Common Equity and Related Stockholder Matters.

     Our common stock has been quoted on The Nasdaq SmallCap MarketK under the
symbol "PLTN," since October 14, 1997. From October 1, 1995 until listing on the
Nasdaq SmallCap Market, our common stock was quoted on the OTC Bulletin
Board(R).

     The following table gives the range of high and low bid information for our
common stock for each quarter of the last two fiscal years, as obtained from The
Nasdaq Stock Market, Inc. The quotations reflect inter-dealer prices, without
retail mark-up, mark-down or commission, and may not represent actual
transactions.

                                       16

<PAGE>

                  Period:              High bid price         Low bid price
                  -------              --------------         -------------
July 1 - September 30, 1997*                9 1/2                 6 1/4
October 1 - December 31, 1997              10 3/4                 5 1/4
January 1 - March 31, 1998                  7 3/8                 5 1/2
April 1 - June 30, 1998                    9 1/16                 4 3/4
July 1 - September 30, 1998                 5 1/2                1 29/32
October 1 - December 31, 1998              5 13/16                1 3/8
January 1 - March 31, 1999                  6 3/8                 3 3/4
April 1 - June 30, 1999                       7                   3 3/4
July 1 - September 27, 1999                 5 1/8                 3 3/8
- ---------------------------------
*Prices before September 5, 1997 have been adjusted to reflect the 1-for-4
reverse split of common stock which took place on September 5, 1997.

     Holders of common stock. On September 27, 1999, we had 301 holders of
record of common stock.

     Dividends and dividend policy. We have never declared or paid any
dividends. We currently intend to retain earnings, if any, for use in our
business. We do not anticipate paying dividends in the foreseeable future.

     Dividend restrictions. Our three outstanding series of preferred stock,
Series A, B and C, contain the following restrictions on our ability to pay
dividends or make distributions to stockholders.

     o    Series A: We may not pay a dividend or make any distribution to
          holders of any class of stock unless we first pay a special dividend
          or distribution of $100 per share to the holders of Series A preferred
          stock.

     o    Series B: We may not pay a dividend or make any distribution to
          holders of any class of stock, except Series A preferred stock, while
          any Series B preferred stock remains outstanding.

     o    Series C: We may not pay a dividend or make any distribution to
          holders of any class of stock, other than Series A and B preferred,
          while any Series C preferred stock remains outstanding.


       Item 6. Management's Discussion and Analysis or Plan of Operations.

     The following discussion and analysis should be read in conjunction with
the consolidated financial statements and accompanying notes filed as part of
this report.

Results of Operations

Year Ended June 30, 1999 Compared to the Year Ended June 30, 1998

     Grants and contracts - During the year ended June 30, 1999 we recognized
$59,977 as revenue under the Small Business Technology Transfer program of the
Department of Health and Human Services. Grant revenue under the Small Business
Innovative Research program of the Department of Health and Human Services was
$33,967 for the year ended June 30, 1998. During the year ended June 30, 1999,
we received two new grants under the National Institutes of Health Small
Business Innovative Research program totaling $850,000.

     License fees and royalties - We recognized $550,000 in license fees as
revenue during the year ended June 30, 1999 related to our termination of a
license option agreement with Nihon. This $550,000 was previously reported as
deferred license revenue. We had no revenues from license fees or royalties
during the year ended June 30, 1998.

     Research and development expenses - Research and development expenses
increased to $8,719,562 for the year ended June 30, 1999 from $7,111,716 for the
year ended June 30, 1998. We substantially increased research and development
spending, primarily relating to development of our LeuTech product for
diagnostic imaging of infections, including increased expenses for manufacturing
scale-up, consulting and clinical trials, and also relating to research expenses
on our PT-14 peptide therapeutic product and MIDAS technology. The increase is
also attributable to the amortization of deferred compensation totaling
$313,202. We expect research and development expenses to continue to increase in
future quarters as we expand research and manufacturing efforts on the LeuTech
product and expand efforts to develop PT-14 and MIDAS technology.

     General and administrative expenses - General and administrative expenses
increased to $3,957,401 for the year ended June 30, 1999 from $2,990,756 for the
year ended June 30, 1998. The increase in general and administrative expenses
was mainly attributable to the amortization of deferred compensation and the
value of options granted at exercise prices below the then current market price
of our common stock totaling $995,473.


     Interest income - Interest income decreased to $172,241 for the year ended
June 30, 1999 from $408,770 for the year ended June 30, 1998. The decrease in
interest income is primarily the result of the depletion of funds available for
investment purposes and used to fund our operations. We expect interest income
to increase for fiscal year 2000 pursuant to the receipt of funds from the
execution of the strategic collaboration agreement with Mallinckrodt, Inc.


     Interest expense - Interest expense decreased to $107,639 for the year
ended June 30, 1999 from $227,143 for the year ended June 30, 1998. The decrease
in interest expense is due to our repayment of a portion of outstanding
principal on long-term debt. We expect interest

                                       18

<PAGE>


expense to decrease for fiscal year 2000, because we expect to be able to fund
our expected levels operations with the resources currently on hand.

     Net loss - Net loss increased to $12,002,384 for the year ended June 30,
1999 from $9,886,878 for the year ended June 30, 1998.

Year Ended June 30, 1998 Compared to the Year Ended June 30, 1997

     Grants and contracts - During the year ended June 30, 1998, we completed
four Phase I grants with the National Institutes of Health under the Small
Business Innovative Research program. Grant revenue from these research grants
was $33,967, compared to $350,173 during the year ended June 30, 1997.

     License fees and royalties - We had no revenues from license fees or
royalties during the year ended June 30, 1998. In the year ended June 30, 1997,
we entered into an option agreement with Nihon, pursuant to which we received an
initial payment of $1,000,000 before Japanese withholding taxes of $100,000. We
accounted for the initial payment by recognizing license fee revenue of $350,000
and deferred license fee revenue of $550,000.


     Other - We had no revenues from sales during the year ended June 30, 1998.
During the year ended June 30, 1997, we discontinued sales of our RhoChek
product due to insufficient sales. Total revenues from sales during the year
ended June 30, 1997, were $22,184.


     Research and development expenses - Research and development expenses
increased to $7,111,716 for the year ended June 30, 1998 from $3,409,983 for the
year ended June 30, 1997. We substantially increased research and development
spending, primarily relating to development of our LeuTech product, including
increased expenses for manufacturing scale-up, consulting and initiation of
Palatin-sponsored clinical trials, and also relating to research expenses on our
MIDAS metallopeptide technology. The increase is also attributable to the
amortization of deferred compensation, and to the value of options granted at
exercise prices below the then current market price of our common stock,
totaling $797,570 for the year ended June 30, 1998.

     General and administrative expenses - General and administrative expenses
increased to $2,990,756 for the year ended June 30, 1998 from $2,533,883 for the
year ended June 30, 1997. The increase in general and administrative expenses
was mainly attributable to the amortization of deferred compensation, totaling
$925,740 for the year ended June 30, 1998, and the value of options granted at
exercise prices below the then current market price of our common stock.

     Interest income - Interest income increased to $408,770 for the year ended
June 30, 1998 from $296,009 for the year ended June 30, 1997. The interest
income was primarily the result of interest on the net proceeds from our
offering of Series A Preferred Stock.


     Interest expense - Interest expense decreased to $227,143 for the year
ended June 30, 1998 from $374,664 for the year ended June 30, 1997. The decrease
is due to our repayment of outstanding principal on long-term debt provided by
Aberlyn Capital Management Limited Partnership.


                                       19

<PAGE>

     Net loss - Net loss increased to $9,886,878 for the year ended June 30,
1998 from $5,300,164 for the year ended June 30, 1997.

Liquidity and Capital Resources


     Since our inception, we have incurred net operating losses and, as of June
30, 1999, had an accumulated deficit of $35,322,364. We have financed our net
operating losses through June 30, 1999 by a series of debt and equity
financings. At June 30, 1999, we had cash and investments of $2,867,628.


     For the year ended June 30, 1999, the net decrease in cash amounted to
$1,992,386. Net cash used for operating activities was $10,046,896, net cash
used for investing activities was $523,972, and net cash provided by financing
activities was $8,578,482.

     On July 8, 1998, we sold 363,636 shares of our common stock for gross
proceeds of $2,000,000 and net proceeds of approximately $1,964,000, after
deducting expenses.

     On December 31, 1998, we sold 287,500 shares of our common stock and
detachable, five-year, non-redeemable warrants to purchase an additional 287,500
shares of common stock at $4.375, for gross proceeds of $1,150,000 and net
proceeds of approximately $1,000,000.

     On February 8, 1999, we sold 651,750 shares of our common stock and
detachable, five-year, non-redeemable warrants to purchase an additional 651,750
shares of common stock at $4.70. We realized gross proceeds of $2,607,000 and
net proceeds of approximately $2,350,000.

     From March 9, 1999 to March 12, 1999, we sold 514,215 shares of our common
stock and detachable, five-year, non-redeemable warrants to purchase an
additional 565,629 shares of common stock. Each warrant is exercisable for one
share of common stock at prices ranging from $4.48 to $5.06. We realized gross
proceeds of $2,427,000 and net proceeds of approximately $2,175,000.


     On May 13, 1999, we received $2,000,000 from Mallinckrodt, Inc. pursuant to
a subordinate note. Principal and interest, accrued at 9% per year, was due by
December 31, 2000. The note was secured by the our assets. We paid the note in
full on August 17, 1999 along with interest expense of $46,849.


     In March 1997, we entered into a ten-year lease on research and development
facilities in Edison, New Jersey, which commenced August 1, 1997. Minimum future
lease payments escalate from approximately $116,000 per year to $200,000 per
year after the fifth year of the lease term. The lease will expire in fiscal
year 2007.

     Effective August 1, 1997, we entered into a five-year lease on
administrative offices in Princeton, New Jersey. Minimum future lease payments
are approximately $97,000 per year.

     We have entered into four license agreements, which require us to make
minimum yearly payments. Future minimum payments under the license agreements
are as follows: 2000 - $200,000, 2001 - $150,000, 2002 - $200,000 and 2003 -
$200,000 and 2004 - $200,000.

                                       20

<PAGE>

     We expect to continue actively searching for certain products and
technologies to license or acquire in the future. If we are successful
in identifying a product or technology for acquisition, we may require
substantial funds for such an acquisition and subsequent development or
commercialization. We do not know whether any acquisition will be consummated in
the future.

     We have incurred negative cash flows from operations since our inception,
and have expended, and expect to continue to expend in the future, substantial
funds to complete our planned product development efforts. We expect that our
existing capital resources, subsequent to the execution of the strategic
collaboration agreement with Mallinckrodt, will be adequate to fund our
projected operations through December 31, 2000, based on current expenditure
levels.

     We anticipate incurring additional losses over at least the next several
years, and we expect our losses to increase as we expand our research and
development activities relating to LeuTech, PT-14 and our MIDAS technology. To
achieve profitability, we, alone or with others, must successfully develop and
commercialize our technologies and proposed products, conduct pre-clinical
studies and clinical trials, obtain required regulatory approvals and
successfully manufacture and market such technologies and proposed products. The
time required to reach profitability is highly uncertain, and we do not know
whether we will be able to achieve profitability on a sustained basis, if at
all.


     As of August 17, 1999, we entered into a strategic collaboration agreement
with Mallinckrodt, Inc., a large international healthcare products company, to
jointly develop and market LeuTech. Under the terms of the agreement,
Mallinckrodt paid a license fee of $500,000 and purchased 700,000 restricted
shares of our Series C convertible preferred stock for $13,000,000. In addition,
Mallinckrodt agreed to make milestone payments totaling $10,000,000 on FDA
approval of the first LeuTech indication and attainment of sales goals following
product launch, to reimburse us for 50% of all ongoing LeuTech development
costs, and to pay us a transfer price on each LeuTech product unit and a royalty
on Mallinckrodt's future net sales of LeuTech. After repaying our subordinate
note to Mallinckrodt for $2,000,000 with interest of $46,849, we received net
proceeds of $11,453,151 on August 17, 1999. Had this agreement been executed on
June 30, 1999, our cash and investments would have been $14,320,779 and
stockholder's equity would have been $13,816,609.


Year 2000 Compatibility

     The year 2000 issue is the result of computer programs being written using
two digits rather than four to define the applicable year. In other words,
date-sensitive software may recognize a date using "00" as the year 1900 rather
than the year 2000. This could result in system failures or miscalculations
causing disruptions of operations, including, among others, a temporary
inability to process transactions and information or engage in similar normal
business activities.

     We believe that we do not have significant year 2000 issues related to our
computerized information systems. It is possible that certain computer systems
or software products of our

                                       21

<PAGE>

suppliers and contractors may not be year 2000 compatible. Since we are not
heavily dependent on any particular software package or vendor in our
operations, our assessment of these year 2000 issues related to our suppliers
and contractors is minimal.

     We currently believe that costs of addressing these issues will not have a
material adverse impact on our financial position. We plan to devote all
resources required to resolve any significant year 2000 issues in a timely
manner. Through the fiscal year ended June 30, 1999, we have expended under
$10,000 on the year 2000 issue. To date, we have not made any contingency plans
to address third-party year 2000 risks. We will formulate contingency plans to
the extent necessary in the remainder of 1999.


                          Item 7. Financial Statements.

     Our consolidated financial statements appear following the signature page
at the end of this report.


Item 8. Changes In and Disagreements With Accountants on Accounting and
Financial Disclosure.

     Not applicable.

                                       22

<PAGE>


                                    PART III

Item 9. Directors, Executive Officers, Promoters and Control Persons; Compliance
with Section 16(a) of the Exchange Act

     Executive officers and directors. The following table sets forth the names,
ages and positions of our executive officers and directors:
<TABLE>
<CAPTION>

Name                                                 Age      Position with Palatin
- ----                                                 ---      ---------------------
<S>                                                  <C>      <C>
Edward J. Quilty (1)                                  48      Chairman of the board, president, chief executive
                                                              officer and director
Charles Putnam                                        46      Executive vice president, chief operating officer
                                  and director
Carl Spana, Ph.D.                                     37      Executive vice president, chief technology officer
                                  and director
Stephen T. Wills                                      42      Executive vice president and chief financial
                                                              officer, secretary and treasurer
James T. O'Brien (1) (2)                              60      Director
John K.A. Prendergast, Ph.D. (1)                      45      Director
Robert G. Moussa (1)                                  53      Director
Robert K. deVeer, Jr. (2)                             53      Director
- -------------------------------------------------
(1)  Member of the compensation committee.

(2) Member of the audit committee.

</TABLE>

     EDWARD J. QUILTY has been our chairman of the board, president, chief
executive officer and a director since the RhoMed merger. Since November 1995,
Mr. Quilty has been CEO and a director of RhoMed. From July 1994 through
November 1995, Mr. Quilty was president, CEO and a director of MedChem Products,
Inc., a publicly traded medical device company, which in September 1995 was
merged into C.R. Bard, Inc. From March 1992 through July 1994, Mr. Quilty served
as president and CEO of Life Medical Sciences, Inc., a publicly traded
biotechnology company. From January 1987 through October 1991, Mr. Quilty served
as executive vice president of McGaw Inc., a publicly traded pharmaceutical
company. Mr. Quilty is also chairman of the board and a director of Derma
Sciences, Inc., a publicly traded medical device company. Mr. Quilty received
his M.B.A. from Ohio University and a B.S. from Southwest Missouri State
University.

                                       23

<PAGE>

     CHARLES PUTNAM has been an executive vice president since June 1996, chief
operating officer since June 1998 and a director since December 1998. He is
responsible for operations, product development and regulatory and clinical
affairs. From July 1994 to May 1996, Mr. Putnam was executive vice president,
research and development, of MedChem. At MedChem, Mr. Putnam was responsible for
product development, regulatory affairs, clinical research and quality control.
From March 1993 to July 1994, Mr. Putnam was vice president of operations and
research and development of Life Medical Sciences, where he was responsible for
all aspects of manufacturing, product development and regulatory affairs for
Life Medical Sciences' commercial product line. From March 1983 to March 1993,
Mr. Putnam was employed by American Cyanamid Corporation in a variety of
positions, including director of device development.

     CARL SPANA, Ph.D., has been a director since the RhoMed merger, and has
been a director of RhoMed since July 1995. Since June 1996, Dr. Spana has served
as an executive vice president and the chief technology officer of Palatin and
RhoMed. From June 1993 to June 1996, Dr. Spana was vice president of Paramount
Capital Investments, LLC, a biotechnology and biopharmaceutical merchant banking
firm, and of The Castle Group Ltd., a medical venture capital firm. At Paramount
Capital Investments and at Castle Group, Dr. Spana was responsible for
discovering, evaluating, and commercializing biotechnologies. Through his work
at Paramount Capital Investments and Castle Group, Dr. Spana co-founded and
acquired several private biotechnology firms. From July 1991 to June 1993, Dr.
Spana was a Research Associate at Bristol-Myers Squibb, a publicly traded
pharmaceutical company, where he was involved in scientific research in the
field of immunology. Dr. Spana is a director of and was Interim president of
AVAX Technologies, Inc., a publicly traded medical technology company. Dr. Spana
received his Ph.D. in molecular biology from The Johns Hopkins University and
his B.S. in biochemistry from Rutgers University.

     STEPHEN T. WILLS has been a vice president and our chief financial officer
since November 1997. Since July 1997, Mr. Wills has been a vice president and
the chief financial officer of Derma Sciences, and since 1991 has been the
president and chief operating officer of Golomb, Wills & Company, P.C., a public
accounting firm. Mr. Wills, a certified public accountant, received his B.S. in
accounting from West Chester University, and an M.S. in taxation from Temple
University.

     JAMES T. O'BRIEN has been a director since August 1996. Since November
1991, Mr. O'Brien has been chairman of the board of Access Corporation, a
provider of employment software and information. Since July 1996, Mr. O'Brien
has been president and chief executive officer of O'Brien Marketing and
Communications, an advertising and communications company. From 1989 to 1991 Mr.
O'Brien was president and chief operating officer of Elan Corporation, PLC, a
publicly traded pharmaceutical company. From 1986 to 1989, Mr. O'Brien was
president and chief executive officer of O'Brien Pharmaceuticals, Inc. Prior to
this, Mr. O'Brien held various management positions with Revlon Health Care
Group, including president of USV Laboratories and the Armour Pharmaceutical
Company; Lederle Laboratories; and

                                       24

<PAGE>

Sandoz Pharmaceuticals, Inc. Mr. O'Brien is a director of Cydex Inc., a
privately held drug delivery company, and of Benedictine College in Atchison,
Kansas.

     JOHN K.A. PRENDERGAST, Ph.D. has been a director since August 1996. Dr.
Prendergast has served as president and principal of Summercloud Bay, Inc., a
biotechnology-consulting firm, since 1993. He is a co-founder and/or a member of
the board of Ingenex, Inc., Optex Ophthamologics, Inc., Gemini Gene Therapies,
Inc., Channel Therapeutics, Inc., Xenometrix, Inc., Avigen, Inc., and AVAX
Technologies, Inc. From October 1991 through December 1997, Dr. Prendergast was
a managing director of Paramount Capital Investments, LLC and a managing
director of The Castle Group Ltd. Dr. Prendergast received his M.Sc. and Ph.D.
from the University of New South Wales, Sydney, Australia and a C.S.S. in
administration and management from Harvard University.

     ROBERT G. MOUSSA has been a director since April 1998. From 1978 until his
retirement in 1997, Mr. Moussa was with Mallinckrodt, Inc., and was president of
Mallinckrodt International from 1995 to 1997. He had responsibilities for
corporate-wide globalization efforts, and was president and chief executive
officer of Mallinckrodt Medical, Inc. from 1992 to 1996. Mr. Moussa is a
graduate of the College du Sacre-Coeur and the Ealing University.

     ROBERT K. deVEER, JR. has been a director since December 1998. Since
January 1997, Mr. deVeer has been the president of deVeer Capital LLC, a private
investment company. From 1995 until his retirement in 1996, Mr. deVeer served as
Managing Director, Head of Industrial Group at New York-based Lehman Brothers.
From 1973 to 1995, he held increasingly responsible positions at New York-based
CS First Boston, including Head of Project Finance, Head of Industrials and Head
of Natural Resources. He was a managing director, member of the investment
banking committee, and a trustee of the First Boston Foundation. He received a
B.A. in economics from Yale University and an M.B.A. in finance from Stanford
University.

     All directors were elected at the annual stockholders' meeting on June 17,
1999 and hold office until the next annual meeting of stockholders, or until
their successors have been elected and qualified. Executive officers are
appointed by the board and serve at the discretion of the board. Each officer
holds his position until his successor is appointed and qualified. All of the
current executive officers hold office under employment agreements. Mr. Quilty's
employment agreement expires July 31, 2002 with automatic annual renewal if not
terminated, and the employment agreements with Mr. Putnam, Dr. Spana and Mr.
Wills all expire September 10, 2001.

     Section 16(a) Beneficial Ownership Reporting Compliance. The rules of the
Securities and Exchange Commission require us to disclose late filings of
reports of stock ownership and changes in stock ownership by our directors and
executive officers. To the best of our knowledge, all of the filings for our
directors and executive officers were made on a timely basis in fiscal 1999,
except that Michael S. Weiss, a former director, failed to timely report changes
in beneficial ownership on Form 5 for the year ended June 30, 1999. Mr. Weiss

                                       25

<PAGE>

subsequently reported the required information on Form 5. We know of no other
failure to file a required form.

Item 10.  Executive Compensation.

     Summary compensation table. The following table shows compensation paid to
our chief executive officer and the other named executive officers for the last
three fiscal years. Our fiscal year end is June 30. With respect to the persons
and periods covered in the following table, we made no restricted stock awards,
have no outstanding stock appreciation rights ("SARs") and have no long-term
incentive plan ("LTIP").
<TABLE>
<CAPTION>
                           SUMMARY COMPENSATION TABLE
                                                                                  Long Term
                                                                                Compensation
                                                                             --------------------
                          Annual Compensation                                      Awards
- -------------------------------------------------------------------------    --------------------
                                                                                                      All other
Name and                                                                             Option           Compen-
Principal Position              Year          Salary           Bonus                Shares(1)         sation
- ------------------              ----          ------           -----               ----------         ------
<S>                             <C>              <C>           <C>                  <C>                <C>
Edward J. Quilty, chief         1999             $358,567           --              100,000            $6,989(2)
executive officer               1998             $334,395      $64,200               24,067(3)         $3,812(2)
                                1997             $301,064           --              240,074(4)             --

Charles Putnam, executive       1999             $207,626           --              100,000           $7,025(2)
vice president                  1998             $160,298      $30,000               74,196(5)        $3,812(2)
                                1997             $150,000           --               41,766               --

                                       25

<PAGE>


Carl Spana, Ph.D.,              1999             $183,266           --              100,000               --
executive vice president        1998             $160,298      $25,000               74,196(6)           $87(7)
                                1997             $150,000           --               41,766               --

Stephen T. Wills,               1999              $40,417           --              100,000          $48,198(8)
executive vice president        1998                   --           --               56,250          $42,144(8)
                                1997                   --           --                   --               --
</TABLE>

                                       26

<PAGE>

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

(1)  The security underlying all options listed is common stock.

(2)  Premiums paid for health insurance policies.

(3)  Includes an anti-dilution option to purchase 7,803 shares of common stock
     at $.20 per share granted on March 24, 1998, pursuant to the terms of Mr.
     Quilty's employment agreement. The March 28, 1998 option replaced a
     canceled option to purchase the same number of shares at $4.96 per share,
     originally granted under the 1997 Executive Officers Stock Option Plan and
     included in the 1997 total. Excluding that replacement option, Mr. Quilty
     received options to purchase a total of 16,264 shares during fiscal 1998.

(4)  Includes an anti-dilution option to purchase 70,257 shares of common stock
     at $.20 per share granted on September 27, 1996, pursuant to the terms of
     Mr. Quilty's employment agreement. The September 27, 1996 option replaced a
     canceled option to purchase the same number of shares at $5.42 per share,
     originally granted by RhoMed on June 21, 1996 and included in the 1996
     total. The $5.42 per share price of the June 21, 1996 option was not in
     accordance with the terms of Mr. Quilty's employment agreement, so the
     board replaced the June 21, 1996 option with the correctly priced September
     27, 1996 option. Excluding that replacement option, Mr. Quilty received
     options to purchase a total of 169,817 shares during fiscal 1997.

(5)  Includes an option to purchase 74,196 shares of common stock at $1.00 per
     share granted on March 24, 1998, under a stock option agreement with Mr.
     Putnam. The March 24, 1998 option replaced a canceled option to purchase
     the same number of shares at $4.96 per share, originally granted under
     RhoMed stock option plans and included in the 1996 total. Excluding that
     replacement option, Mr. Putnam received no additional options during fiscal
     1998.

(6)  Includes an option to purchase 74,196 shares of common stock at $1.00 per
     share granted on March 24, 1998, under a stock option agreement with Dr.
     Spana. The March 24, 1998 option replaced a canceled option to purchase the
     same number of shares at $4.96 per share, originally granted under RhoMed
     stock option plans and included in the 1996 total. Excluding that
     replacement option, Dr. Spana received no additional options during fiscal
     1998.

(7)  Premiums paid for disability insurance policy.

(8)  Amounts paid to the accounting firm of Golomb, Wills & Co. for consulting
     services.

                                       27

<PAGE>

     Option grants in last fiscal year. The following table shows options
granted to the named executive officers during the fiscal year ended June 30,
1999. All of the options listed were granted under our 1996 stock option plan,
and the underlying security is common stock. The exercise price for each option
is equal to the market price of common stock on the date of grant. We have not
granted any stock appreciation rights (" SARs").

                        OPTION GRANTS IN LAST FISCAL YEAR
                                Individual Grants

                      Number of       % of Total
                      Securities        Options
                      Underlying      Granted to      Exercise
                       Options         Employees      or Base        Expiration
           Name       Granted (#)   in Fiscal Year  Price ($/Sh)        Date
           ----       ------------  --------------  -----------         ----
Edward J. Quilty      100,000(1)         17.5%            $4.000      12/11/08
Charles Putnam        50,000(2)          8.8%             $2.500       9/11/08
Charles Putnam        50,000(3)          8.8%             $4.125      12/31/08
Carl Spana, Ph.D.     50,000(2)          8.8%             $2.500       9/11/08
Carl Spana, Ph.D.     50,000(3)          8.8%             $4.125      12/31/08
Stephen T. Wills      50,000(2)          8.8%             $2.500       9/11/08
Stephen T. Wills      50,000(3)          8.8%             $4.125      12/31/08
- --------------------------

(1)  The option becomes exercisable as to 1/12 on the 16th day of each month,
     starting December 16, 1998.

(2)  The option becomes exercisable as to 33% on September 11, 1998 and 1999,
     and as to 34% on September 11, 2000.

(3)  Fully exercisable.

                                       28

<PAGE>

     Fiscal year-end option values. We have no outstanding SARs. Fiscal year-end
values in the following table are based on a last reported sale price for the
common stock, as reported on The Nasdaq SmallCap Market on June 30, 1999, of
$4.5625 per share.
<TABLE>
<CAPTION>

                 Aggregated Option Exercises in Last Fiscal Year
                            and FY-End Option Values
                                                                                                 Value of
                                                                    Shares Underlying           Unexercised
                                                                       Unexercised              In-the-Money
                                                                        Options at               Options at
                          Shares                            Fiscal Year End,         Fiscal Year End,
                         Acquired             Value           Exercisable/             Exercisable/
           Name         on Exercise          Realized        Unexercisable            Unexercisable
           ----         -----------          --------       ----------------         ----------------
<S>                       <C>                <C>                <C>                     <C>
Edward J. Quilty          70,257             $403,100           304,312/                $758,181/
                                                                 41,667                  $23,438
Charles Putnam               0                 N/A              182,628/                $320,572/
                                                                 33,334                  $68,751
Carl Spana, Ph.D.            0                 N/A              182,628/                $320,572/
                                                                 33,334                  $68,751
Stephen T. Wills             0                 N/A              122,916/                 $56,249/
                                                                 33,334                  $68,751
</TABLE>


Compensation of directors.

     Non-employee directors' initial option grants. All non-employee directors
serving on the date the board adopted the 1996 stock option plan, including
Michael S. Weiss (a former non-employee director), James T. O'Brien and John
K.A. Prendergast, received initial non-employee directors' options to purchase
5,000 shares of common stock at $5.44 per share, the market price on the date of
grant. Under the current compensation policy, when a non-employee director is
first elected to the board, he receives an option to purchase an amount of
common stock determined by the board, up to 10,000 shares, at the market price
on the date of grant. Mr. Moussa received an option to purchase 10,000 shares at
$6.25 per share and Mr. deVeer received an option to purchase 10,000 shares at
$4.00 per share upon joining the board. These options vest as to 25% of the
option per year, starting one year after the date of grant, and expire ten years
from the date of grant.

     Non-employee directors' annual option grants. Each non-employee director
receives annually an option to purchase 10,000 shares of common stock at the
market price on the date of

                                       2

<PAGE>

grant. Mr. Weiss, Mr. O'Brien and Dr. Prendergast each received an option to
purchase 6,667 shares of common stock at $6.00 per share, in lieu of a regular
non-employee director's option for service for the period from August 1997
through March 1998. These options vest as to 25% of the option per year,
starting one year after the date of grant, and expire ten years from the date of
grant.

     Non-employee directors' annual fees. Non-employee directors receive $12,000
per year, plus reimbursement of expenses, for services as a director. In lieu of
the $12,000 per year, a non-employee director may elect, on or before December
12 of each year, to receive an option for the number of shares of common stock
which would be purchasable, at the market price on December 12, for $24,000.
These options vest in 12 monthly increments and expire 10 years from the date of
grant. Pursuant to this policy, Mr. Weiss and Mr. O'Brien received options to
purchase:

     -    4,267 shares at $5.625 per share for calendar year 1998;

     -    355 shares at $5.625 per share as compensation for services rendered
          in December 1997;

     -    2,839 shares at $7.75 per share as compensation for services rendered
          in calendar year 1997 through November 1997; and

     -    1,066 shares at $7.50 per share in lieu of accrued compensation of
          $4,000 which was due as of December 1996.

     Messrs. Weiss, O'Brien, Moussa and deVeer each elected to receive options
to purchase 5,907 shares of common stock at $4.0625 per share (the market price
on the first trading day after December 12, 1998), in lieu of $12,000
compensation for calendar year 1999.

     Michael S. Weiss resigned from the board effective April 15, 1999. The
board accelerated vesting of all of Mr. Weiss's options, for a total of 61,101
shares, to April 15, 1999, and extended Mr. Weiss's options, which would have
terminated 90 days after his resignation, to have a termination date of April
15, 2000.

     Employee directors. Employee directors are not separately compensated for
services as directors, but are reimbursed for expenses incurred in performing
their duties as directors, including attending all meetings of the board and any
committees on which they serve. Service as a director is a condition of Edward
J. Quilty's employment agreement, but is not separately compensated.


Employment Agreements

     Edward J. Quilty. Mr. Quilty serves as the chairman and chief executive
officer of Palatin under an employment agreement which commenced on August 1,
1999. The term of the agreement is three years.

                                       30

<PAGE>

     Mr. Quilty's minimum base salary and current salary is $360,643 per year.
He is entitled to receive annual bonus compensation of up to one year's base
salary, in an amount to be decided by the compensation committee based on his
achievement of yearly objectives, among other things. We have agreed to
reimburse Mr. Quilty for premiums and other payments to maintain a $1,000,000
term life insurance policy. Mr. Quilty is also entitled to participate in all
bonus and benefit programs that we establish, to the extent his position,
tenure, salary, age, health and other qualifications make him eligible to
participate, and in any directors' and officers' liability insurance which we
maintain.

     We may grant Mr. Quilty stock options under the employment agreement, with
an exercise price equal to the closing market price on the date of grant. If we
do grant options under the agreement, anti-dilution protections in the agreement
will require us to issue additional options if, during the term of the
employment agreement, we sell securities which increase our outstanding common
stock by 40% or more. In that event, we must issue additional options so that
Mr. Quilty will have options granted under the employment agreement to purchase
the number of shares of common stock which, together with shares purchased on
the exercise of such options, is at least equal to the percentage of our
outstanding common stock that he had the option to purchase under the employment
agreement before the increase. To date, we have not granted any options under
the employment agreement.

     If we terminate the employment agreement for "cause," or if Mr. Quilty
terminates the agreement without "good reason," as these terms are defined in
the employment agreement, then

     o    we will pay all amounts earned through the termination date, and

     o    all options previously granted to Mr. Quilty, under the employment or
          any other stock option plan or employee benefit plan, terminate
          immediately.

If the agreement terminates upon Mr. Quilty's death or disability, then

     o    we will pay him or his estate all amounts earned through the
          termination date,

     o    we will pay him or his estate six months' additional salary, and

     o    all options not previously exercisable will become exercisable in full
          for 90 days.

 If we terminate  the  employment  agreement  without  cause,  or if Mr.  Quilty
terminates the employment agreement with good reason or within 12 months after a
change in control of Palatin, then

     o    we will pay him all amounts earned through the termination date,
          including a prorated cash bonus based on the previous year's bonus,

     o    Mr. Quilty may elect lump sum distribution from any deferred
          compensation plan,

     o    we will pay him severance pay consisting of the greater of one year of
          his highest base salary or the aggregate salary which he would have
          received for the remaining term of the agreement,

     o    we will maintain his insurance benefits for one year,

                                       31

<PAGE>

     o    we will pay reasonable expenses of locating new employment, and

     o    all options not previously exercisable will become exercisable in full
          for 90 days.

The employment  agreement  also includes  non-competition,  confidentiality  and
indemnification covenants.

     Charles Putnam, Carl Spana, Ph.D. and Stephen T. Wills. Mr. Putnam, Dr.
Spana and Mr. Wills have each entered into employment agreements for a
three-year period commencing September 11, 1998. Mr. Putnam is serving as an
executive vice president and the chief operating officer, at a minimum base
salary of $200,000 per year and a current salary of $220,000 per year. Dr. Spana
is serving as an executive vice president and the chief technology officer, at a
minimum base salary of $176,000 per year and a current salary of $190,000 per
year. Mr. Wills is serving as an executive vice president and the chief
financial officer, at a minimum base salary of $65,000 per year and a current
salary of $100,000 per year. Each is entitled to receive annual bonus
compensation of up to one year's base salary, in an amount to be decided by the
compensation committee based on their achievement of yearly objectives, among
other things. Each is also entitled to participate in all bonus and benefit
programs that we establish, to the extent his position, tenure, salary, age,
health and other qualifications make him eligible to participate, and in any
directors' and officers' liability insurance which we maintain.

     Pursuant to their employment agreements, each of Messrs. Putnam, Spana and
Wills have received an option to purchase 50,000 shares of common stock, at a
price of $2.50 per share, granted under our 1996 stock option plan. The options
vest as to 33% of the shares on September 11, 1998 and 1999, and as to the
remaining 34% on September 11, 2000.

     Anti-dilution protections in each agreement require us to issue additional
options if, during the term of the employment agreement, we sell securities
which increase the outstanding common stock by 40% or more. In that event, we
must issue options at an exercise price of $2.50 per share, so that each officer
will have options granted under the employment agreement to purchase the number
of shares of common stock which, together with shares purchased on the exercise
of such options, is at least equal to the percentage of our outstanding common
stock that each officer had the option to purchase under the employment
agreement as of September 11, 1998. That percentage was approximately 1.1%.

     Each agreement allows us or the employee to terminate the agreement on 30
days' notice, and contains other provisions for termination by Palatin for
"cause," or by the employee for "good reason" or due to a "change in control,"
as these terms are defined in the employment agreements. Early termination may,
in some circumstances, result in accelerated vesting of stock options and/or
severance pay for a one-year period at the rate of base salary, cash bonus and
benefits then in effect. Each agreement contains non-competition,
non-solicitation and confidentiality covenants.

                                       32

<PAGE>

Item 11.  Security Ownership of Certain Beneficial Owners and Management.

     The table below shows the beneficial stock ownership and current voting
power, as of September 27, 1999, of each director, each of the named executive
officers, and all directors and executive officers as a group. It also includes
all persons who, to our knowledge, beneficially own more than five percent of
our common stock or Series A preferred stock, which are the only classes of
voting securities we have outstanding. "Beneficial ownership" here means direct
or indirect voting or investment power over outstanding stock and stock which a
person has the right to acquire now, or within 60 days after September 27, 1999.

     Some beneficial owners are listed twice in the table -- once to show their
common stock holdings, and once to show their Series A preferred stock holdings.
The common stock amounts shown in the table include the common stock issuable on
conversion of Series A preferred stock, so the ownership percentages shown for
any person who holds both types of stock should not be added together. Also,
share amounts may reflect indirect ownership of shares which another person in
the table owns directly. Therefore, the ownership percentages of affiliated
persons should not be added together. See the footnotes for more detailed
explanations of the holdings. Except as otherwise noted, to our knowledge, the
persons named in the table beneficially own and have sole voting and investment
power over all shares listed.

     The common stock has one vote per share and the Series A preferred stock
has approximately 21.41 votes per share. Voting power is calculated on the basis
of the aggregate of common stock and Series A preferred stock outstanding as of
September 27, 1999. On September 27, 1999, 7,240,329 shares of common stock and
38,936 of Series A preferred stock were outstanding.

     The address for all beneficial owners, unless otherwise noted, is c/o
Palatin Technologies, Inc., 214 Carnegie Center, Suite 100, Princeton, NJ 08540.
<TABLE>
<CAPTION>
                                                                                             Percent of
                                                                               Percent of       Voting
Class          Name of Beneficial Owner                              Shares       Class         Power
- ------         -------------------------                           ----------  ---------    ----------
<S>            <C>                                                  <C>            <C>          <C>
Common         Edward J. Quilty                                     541,816(1)     7.0%           *

Common         Charles Putnam                                       231,962(2)     3.1%           *

Common         Carl Spana, Ph.D.                                    235,385(3)     3.1%           *

Common         Stephen T. Wills                                     155,570(4)     2.1%           *

Common         James T. O'Brien                                      27,615(5)                    *

Common         John K.A. Prendergast, Ph.D.                          75,839(6)     1.0%           *

                                       33

<PAGE>
                                                                                             Percent of
                                                                               Percent of       Voting
Class          Name of Beneficial Owner                              Shares       Class         Power
- ------         -------------------------                           ----------  ---------    ----------
Common         Robert G. Moussa                                      16,516(7)      *             *

Common         Robert K. deVeer, Jr.                                  7,422(8)      *             *


Common         Lindsay A. Rosenwald, M.D.(9)                     1,280,190(10)    16.5%         12.0%


Common         Paramount Capital Asset Management, Inc.(9)         692,130(11)     9.2%          7.6%

Common         The Aries Trust, a Cayman Islands trust(9)          473,551(12)     6.4%          5.2%

Common         Albert Fried, Jr.(13)                               549,239(14)     7.1%           *

Common         TheraTech, Inc.(15)                                     363,636     5.0%          4.5%

Series A       Lindsay A. Rosenwald, M.D.(9)                        15,079(16)    34.3%          3.9%
Preferred

Series A       Paramount Capital Asset Management, Inc.(9)          11,000(17)    27.5%          2.9%
Preferred

Series A       The Aries Trust, a Cayman Islands trust(9)            7,150(18)    18.1%          1.9%
Preferred


Series A       Aries Domestic Fund(9)                                3,850(18)     9.8%          1.0%
Preferred

Series A       J.F. Shea Co., Inc.(20)                               5,000        12.8%          1.3%
Preferred


Series A       Albert Fried, Jr.(13)                                  3,000        7.7%           *
Preferred


               All directors and executive officers as a         1,292,305(21)    15.3%          1.3%
               group (seven persons)


</TABLE>
- ---------------------

*Less than one percent.

(1)  Includes 462,541 shares which Mr. Quilty has the right to acquire now or
     within 60 days after September 27, 1999.

                                       34

<PAGE>

(2)  Shares which Mr. Putnam has the right to acquire now or within 60 days
     after September 27, 1999.

(3)  Includes 223,712 shares which Dr. Spana has the right to acquire now or
     within 60 days after September 27, 1999.

(4)  Shares which Mr. Wills has the right to acquire now or within 60 days after
     September 27, 1999.

(5)  Shares which Mr. O'Brien has the right to acquire now or within 60 days
     after September 27, 1999.

(6)  Includes 64,166 shares which Dr. Prendergast has the right to acquire now
     or within 60 days after September 27, 1999.

(7)  Shares which Mr. Moussa has the right to acquire now or within 60 days
     after September 27, 1999.

(8)  Shares which Mr. deVeer has the right to acquire now or within 60 days
     after September 27, 1999.

(9)  Address is c/o Paramount Capital, Inc., 787 Seventh Avenue, New York, NY
     10019.


(10) Includes 309,595 shares which Dr. Rosenwald, or persons with whom he shares
     voting and investment power, have the right to acquire now or within 60
     days after September 27, 1999. Dr. Rosenwald shares voting and investment
     power as to 1,051,597 of the 1,280,190 shares shown in the table with the
     following persons:


          o    RAQ, LLC, as to 358,245 shares

          o    Paramount Capital Asset Management, Inc., as to 692,130 shares

          o    The Aries Trust, as to 473,551 shares

          o    Aries Domestic Fund, as to 218,579 shares

          o    Aries II, as to 1,222 shares


     Dr. Rosenwald is the president of RAQ, LLC, and is the president, chairman
     of the board and sole shareholder of Paramount Capital Asset Management,
     Inc., which is the investment manager of The Aries Trust and the general
     partner of Aries Domestic Fund. Dr. Rosenwald and Paramount Capital Asset
     Management disclaim beneficial ownership of the securities held by The
     Aries Trust, Aries Domestic Fund and Aries II, except to the extent of
     their pecuniary interest, if any. The table does not include any shares
     owned or issuable upon exercise of warrants held by employees of Paramount
     Capital, Inc., of which Dr. Rosenwald is the president, or Paramount
     Capital Investments, of which Dr. Rosenwald is the chairman of the board
     and president.


(11) Includes 81,002 shares which Paramount Capital Asset Management, or persons
     with whom it shares voting and investment power, have the right to acquire
     now or within 60

                                       35

<PAGE>


     days after September 27, 1999. Paramount Capital Asset Management shares
     voting and investment power as to the shares shown in the table with the
     following persons:

          o    Lindsay A. Rosenwald, M.D., as to 692,130 shares

          o    The Aries Trust, as to 473,551 shares

          o    Aries Domestic Fund, as to 218,579 shares.

     Paramount Capital Asset Management is the investment manager of The Aries
     Trust and the general partner of Aries Domestic Fund. Paramount Capital
     Asset Management disclaims beneficial ownership of the securities held by
     The Aries Trust and Aries Domestic Fund, except to the extent of its
     pecuniary interest, if any. All of the shares owned or purchasable by
     Paramount Capital Asset Management are also included in the beneficial
     ownership of Dr. Rosenwald, as explained in note (10) above.

(12) Includes 52,003 shares which The Aries Trust has the right to acquire now
     or within 60 days after September 27, 1999. The Aries Trust shares voting
     and investment power as to 473,551 shares with Dr. Rosenwald and Paramount
     Capital Asset Management. All of the shares owned or purchasable by The
     Aries Trust are also included in the beneficial ownership of Dr. Rosenwald
     and of Paramount Capital Asset Management, as explained in notes (10) and
     (11) above.

(13) Address is c/o Albert Fried & Company, LLC, 40 Exchange Place, New York, NY
     10005.


(14) Includes 385,000 shares which Mr. Fried has the right to acquire now or
     within 60 days after September 27, 1999.


(15) Address is 417 Wakara Way, Salt Lake City, UT 84198.


(16) Includes 5,079 shares which Dr. Rosenwald, or persons with whom he shares
     voting and investment power, have the right to acquire now or within 60
     days after September 27, 1999. Dr. Rosenwald shares voting and investment
     power as to 11,000 shares. See note (10) above.

(17) Includes 1,000 shares which Paramount Capital Asset Management, or persons
     with whom it shares voting and investment power, have the right to acquire
     now or within 60 days after September 27, 1999. Paramount Capital Asset
     Management shares voting and investment power as to 11,000 shares. See note
     (11) above.

(18) Includes 650 shares which The Aries Trust, or persons with whom it shares
     voting and investment power, have the right to acquire now or within 60
     days after September 27, 1999. The Aries Trust shares voting and investment
     power as to 7,150 shares. See note (12) above.


(19) Includes 350 shares which Aries Domestic Fund, or persons with whom it
     shares voting and investment power, have the right to acquire now or within
     60 days after September 27, 1999. Aries Domestic Fund shares voting and
     investment power as to 3,850 shares with Dr. Rosenwald and Paramount
     Capital Asset Management. All of the shares owned

                                       36

<PAGE>

     or purchasable by Aries Domestic Fund are also included in the beneficial
     ownership of Dr. Rosenwald and of Paramount Capital Asset Management, as
     explained in notes (10) and (11) above.

(20) Address is 655 Brea Canyon Road, Walnut, CA 91789.

(21) Includes 1,189,684 shares which directors and officers have the right to
     acquire now or within 60 days after September 27, 1999.



Item 12.  Certain Relationships And Related Transactions.

     TheraTech, Inc. In March 1998, we entered into a license and development
agreement with TheraTech in connection with, among other things, the development
of PT-14, and executed a letter of intent in connection with a proposed loan
from TheraTech which would be convertible into a series of preferred stock. This
loan transaction did not take place, but in July 1998, we sold 363,636 shares of
common stock to TheraTech for $2,000,000. James T. O'Brien, a director of
Palatin, was also a director of TheraTech. Mr. O'Brien recused himself from
voting on the transactions with TheraTech and the transactions were approved by
a vote of the disinterested directors.

     Summercloud Bay. In October 1997, we entered into a consulting agreement
with Summercloud Bay, Inc., a corporation in which John K.A. Prendergast is an
officer and sole stockholder, to provide strategic and technology consulting
services. Dr. Prendergast is a director of Palatin. Under the agreement, we pay
Summercloud Bay $4,500 per month and we issued a stock option to Summercloud Bay
under our 1996 stock option plan to purchase 50,000 shares of common stock at
$7.75 per share. That option is now fully vested and expires in December 2007.

     Paramount Capital, Inc. In February 1998, we engaged Paramount to act as a
finder in connection with our Series B preferred stock offering. Michael S.
Weiss, who was a director of Palatin from July 1996 to April 1999, was Senior
Managing Director of Paramount. Mr. Weiss recused himself from voting on the
matter, and the Series B offering was approved by a vote of the disinterested
directors. As finder, Paramount received a 10% finder's fee, amounting to
$188,750. We also agreed to indemnify Paramount against certain liabilities,
including liabilities arising under the Securities Act of 1933, in connection
with the Series B offering.

     We entered into an introduction agreement with Paramount under which
Paramount acted as our non-exclusive financial advisor for a minimum period of
18 months commencing January 1, 1997. Under this agreement, Paramount has
received out-of-pocket expenses incurred in connection with services performed
under the introduction agreement,

     o    a retainer of $72,000 and

     o    warrants to purchase 17,052 shares of common stock at $6.45 to $6.56
          per share, issued to a designee of Paramount Capital, Inc.

                                       37

<PAGE>

Paramount will receive a percentage or lump sum success fees in the event that
it assists us in connection with certain financing and strategic transactions.

     In connection with private placements of common stock and warrants from
December 1998 to March 1999, in which we raised an aggregate of $6,184,000, we
paid Paramount a total of $325,020 in fees and commissions, and issued warrants
to designees of Paramount including Lindsay A. Rosenwald, M.D., to purchase a
total of 186,923 shares of common stock at $4.70 to $5.06 per share.

     Employment agreements and option grants. We have employment agreements with
Messrs. Quilty, Putnam, Spana and Wills, as described in Item 10, Executive
Compensation. We have granted stock options to Messrs. Quilty, Putnam, Spana and
Wills, and to our four non-employee directors. These option grants are described
in Item 10, Executive Compensation.

     Buck A. Rhodes, Ph.D. Dr. Rhodes was a director of RhoMed from its
inception until June 30, 1996, was president of RhoMed from its inception until
March 7, 1996, and was a director of Palatin from June 25, 1996 through June 30,
1996. Under a consulting agreement dated March 7, 1996 between Dr. Rhodes and
RhoMed, we paid Dr. Rhodes $6,833 per month from April 1996 through March 1998
for consulting services.



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

(a)      Exhibits

     The following exhibits are filed with this report, or incorporated by
reference as noted:

2.1  Agreement and Plan of Reorganization dated as of April 12, 1996, between
     Interfilm, Inc., Interfilm Acquisition Corp. and RhoMed Incorporated.
     Incorporated by reference to Exhibit 2.1 of our current report on Form 8-K
     dated June 25, 1996, filed with the SEC on July 10, 1996.

2.2  Waiver and Consent dated as of June 24, 1996, between Interfilm, Inc.,
     Interfilm Acquisition Corp. and RhoMed Incorporated. Incorporated by
     reference to Exhibit 2.2 of our Annual report on Form 10-KSB for the period
     ended June 30, 1996, filed with the SEC on September 27, 1996.

3.1  Restated Certificate of Incorporation, as filed with the Delaware Secretary
     of State on November 3, 1993. Incorporated by reference to Exhibit 3.1 of
     our current report on Form 8-K dated July 19, 1996, filed with the SEC on
     August 9, 1996.

3.2  Amendment to the Restated Certificate of Incorporation, as filed with the
     Delaware Secretary of State on July 19, 1996. Incorporated by reference to
     Exhibit 3.2 of our current report on Form 8-K dated July 19, 1996, filed
     with the SEC on August 9, 1996.

3.3  Bylaws. Incorporated by reference to Exhibit 3.2 of our Form 10-QSB for the
     quarter ended December 31, 1997, filed with the SEC on February 13, 1998.

                                       38

<PAGE>

3.4  Certificate of Designations of Series A Convertible Preferred Stock, as
     filed with the Delaware Secretary of State on February 21, 1997.
     Incorporated by reference to Exhibit 3.6 of our Form 10-QSB/A Amendment No.
     2 for the quarter ended March 31, 1997, filed with the SEC on July 17,
     1997.

3.5  Amendment to the Restated Certificate of Incorporation, as filed with the
     Delaware Secretary of State on September 5, 1997. Incorporated by reference
     to Exhibit 3.7 of our Form 10-KSB for the year ended June 30, 1997, filed
     with the SEC on September 26, 1997.

3.6  Certificate of Designations of Series B Preferred Stock, as filed with the
     Delaware Secretary of State on April 27, 1998. Incorporated by reference to
     Exhibit 3.8 of our current report on Form 8-K dated April 28, 1998, filed
     with the SEC on May 8, 1998.

3.7  Certificate of Designations of Series C Preferred Stock, as filed with the
     Delaware Secretary of State on August 17, 1999. (b)

4.1  Specimen certificate for common stock. Incorporated by Reference to Exhibit
     4.1 of our current report on Form 8-K dated July 19, 1996, filed with the
     SEC on August 9, 1996.

4.2  Specimen certificate for Series A Convertible Preferred Stock. Incorporated
     by reference to Exhibit 4.6 of our Form 10-QSB/A Amendment No. 2 for the
     quarter ended March 31, 1997, filed with the SEC on July 17, 1997.

4.3  Specimen certificate for Series B Convertible Preferred Stock. Incorporated
     by reference to Exhibit 4.7 of our current report on Form 8-K dated April
     28, 1998, filed with the SEC on May 8, 1998.

4.4  Specimen certificate for Series C Convertible Preferred Stock. (b)

10.1 RhoMed Incorporated 1995 Employee Incentive Stock Option Plan. Incorporated
     by reference to Exhibit 10.04 of our annual report on Form 10-KSB for the
     period ended June 30, 1996, filed with the SEC on September 27, 1996. (a)

10.2 1996 Stock Option Plan, as amended effective July 1, 1999. (a) (b)

10.3 Carl Spana Stock Option Agreement. Incorporated by reference to Exhibit
     4.15 of our Form S-8 filed with the SEC on June 17, 1998. (a)

10.4 Charles L. Putnam Stock Option Agreement. Incorporated by reference to
     Exhibit 4.16 of our Form S-8 filed with the SEC on
         June 17, 1998. (a)

10.5 1997 Executive Officers Stock Option Agreement. Incorporated by reference
     to Exhibit 4.18 of our Form S-8 filed with the SEC on June 17, 1998. (a)

10.6 Employment Agreement dated as of October 9, 1998, between Palatin
     Technologies, Inc. and Charles Putnam. Incorporated by reference to Exhibit
     10.37 of our quarterly report on Form 10-QSB for the period ended September
     30, 1998, filed with the SEC on November 16, 1998. (a)

                                       39

<PAGE>

10.7 Employment Agreement dated as of October 9, 1998, between Palatin
     Technologies, Inc. and Carl Spana. Incorporated by reference to Exhibit
     10.38 of our quarterly report on Form 10-QSB for the period ended September
     30, 1998, filed with the SEC on November 16, 1998. (a)

10.8 Employment Agreement dated as of October 9, 1998, between Palatin
     Technologies, Inc. and Stephen T. Wills. Incorporated by reference to
     Exhibit 10.39 of our quarterly report on Form 10-QSB for the period ended
     September 30, 1998, filed with the SEC on November 16, 1998. (a)

10.9 Employment Agreement dated July 9, 1999 between Palatin Technologies, Inc.
     and Edward J. Quilty. (a) (b)

10.10 Form of RhoMed Class A Warrant. Incorporated by reference to Exhibit 10.16
     of our annual report on Form 10-KSB for the period ended June 30, 1996,
     filed with the SEC on September 27, 1996.

10.11 Form of Placement Agent Warrant for the RhoMed Class A Offering.
     Incorporated by reference to Exhibit 10.17 of our annual report on Form
     10-KSB for the period ended June 30, 1996, filed with the SEC on September
     27, 1996.

10.12 Form of RhoMed Class B Warrant. Incorporated by reference to Exhibit 10.19
     of our annual report on Form 10-KSB for the period ended June 30, 1996,
     filed with the SEC on September 27, 1996.

10.13 Form of Placement Agent Warrant for the RhoMed Class B Offering.
     Incorporated by reference to Exhibit 10.20 of our annual report on Form
     10-KSB for the period ended June 30, 1996, filed with the SEC on September
     27, 1996.

10.14 Form of Placement Agent Warrant for the RhoMed common stock offering.
     Incorporated by reference to Exhibit 10.22 of our annual report on Form
     10-KSB for the period ended June 30, 1996, filed with the SEC on September
     27, 1996.

10.15 Form of Placement Agent Warrant for the Series A Convertible Preferred
     Stock Offering. Incorporated by reference to Exhibit 10.29 of our
     registration statement on Form S-3, filed with the SEC on November 25,
     1997.

10.16 Convertible Preferred Stock Purchase Agreement dated as of April 28, 1998,
     between Palatin and the named purchasers, relating to Series B convertible
     preferred stock. Incorporated by reference to Exhibit 99.1 of our current
     report on Form 8-K dated April 28, 1998, filed with the SEC May 8, 1998.

10.17 Stock Purchase Agreement dated as of July 6, 1998, between Palatin and
     TheraTech, Inc. Incorporated by reference to Exhibit 99.1 of our current
     report on Form 8-K dated July 8, 1998, filed with the SEC on July 9, 1998.

10.18 Lease between Carnegie 214 Associates Limited Partnership and Palatin
     Technologies, Inc. dated May 6, 1997. Incorporated by reference to Exhibit
     10.26 of our annual report

                                       40

<PAGE>

     on Form 10-KSB for the year ended June 30, 1997, filed with the SEC on
     September 26, 1997.

10.19 Lease between WHC-Six Real Estate, L.P. and Palatin Technologies, Inc.
     dated March 13, 1997. Incorporated by reference to Exhibit 10.27 of our
     Form 10-KSB for the year ended June 30, 1997, filed with the SEC on
     September 26, 1997.

10.20 Consulting Agreement between Palatin and Summercloud Bay, Inc.
     Incorporated by reference to Exhibit 10.36 of our annual report on Form
     10-KSB/A, Amendment No. 1, dated June 30, 1998, filed with the SEC on
     October 2, 1998.

10.21 Strategic Collaboration Agreement dated as of August 17, 1999, between
     Palatin and Mallinckrodt, Inc. (c)

21   Subsidiaries. (b)

23   Consent of Arthur Andersen LLP. (b)

27   Financial Data Schedule. (b)
- ------------------------

(a)  Management contract or compensatory plan or arrangement.

(b)  Filed as an exhibit to this report.

(c)  Filed as an exhibit to this report. We have requested confidential
     treatment of certain provisions contained in Exhibit 10.21. The copy filed
     as an exhibit omits the information subject to the confidentiality request.



b)       Reports on Form 8-K

     We filed one report on Form 8-K during the three months ended June 30,
1999. We filed the report on May 5, 1999, with a date of April 30, 1999, and
reported on Item 5, Other Events, relating to completion of a private placement
of common stock and warrants.




                                       41

<PAGE>


                                   SIGNATURES


In accordance with Section 13 or 15(d) of the Exchange Act, the registrant
caused this amended report to be signed on its behalf by the undersigned,
thereunto duly authorized.


PALATIN TECHNOLOGIES, INC.


By: /s/ Edward J. Quilty
   ----------------------------
   Edward J. Quilty
   Chairman of the Board, President and Chief Executive Officer



By: /s/ Stephen T. Wills
    ---------------------------
   Stephen T. Wills
   Executive Vice President and Chief Financial Officer

Date:  December 27, 1999




                                       42

<PAGE>

                                Table of Contents
                        Consolidated Financial Statements


The following Consolidated financial statements of the Company are filed as part
of this Report:

                                                                           Page

Report of Independent Public Accountants....................................F-1

Consolidated Balance Sheets.................................................F-2

Consolidated Statements of Operations.......................................F-3

Consolidated Statements of Stockholders' Equity (Deficit)...................F-4

Consolidated Statements of Cash Flows.......................................F-7

Notes to Consolidated Financial Statements..................................F-9


<PAGE>

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Stockholders and Board of Directors of
   Palatin Technologies, Inc.:

We have audited the accompanying consolidated balance sheets of Palatin
Technologies, Inc. (a Delaware corporation in the development stage) and
subsidiaries as of June 30, 1999 and 1998, and the related consolidated
statements of operations, stockholders' equity (deficit) and cash flows for each
of the three years in the period ended June 30, 1999, and for the period from
January 28, 1986 (inception) to June 30, 1999. These financial statements are
the responsibility of the Company's management. Our responsibility is to express
an opinion on these financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in
all material respects, the financial position of Palatin Technologies, Inc. and
subsidiaries as of June 30, 1999 and 1998 and the results of their operations
and their cash flows for each of the periods indicated above, in conformity with
generally accepted accounting principles.


                                                    ARTHUR ANDERSEN LLP


Philadelphia, PA
  August 20, 1999


                                      F-1

<PAGE>

<TABLE>
<CAPTION>


                                                      PALATIN TECHNOLOGIES, INC.
                                                   (A Development Stage Enterprise)
                                                     Consolidated Balance Sheets

                                                                                        June 30, 1999            June 30, 1998
                                                                                    ----------------------   ----------------------
<S>                                                                                       <C>                      <C>
ASSETS
Current assets:
  Cash                                                                                    $     2,333,801          $     4,326,187
  Short term investments                                                                          454,827                        -
  Prepaid expenses and other
                                                                                                  147,780                  277,765
                                                                                    ----------------------   ----------------------
      Total current assets
                                                                                                2,936,408                4,603,952

Fixed assets, net of accumulated depreciation and amortization
  of $676,362 and $454,705 respectively
                                                                                                1,457,605                1,610,117
Restricted cash                                                                                   185,000                  185,000
Other                                                                                             144,032
                                                                                                                            76,000
                                                                                    ----------------------   ----------------------
                                                                                          $     4,723,045          $     6,475,069
                                                                                    ======================   ======================

LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable                                                                        $     1,116,894           $      461,546
  Accrued expenses
                                                                                                1,264,893                1,134,388
  Current portion of long-term debt
                                                                                                        -                  939,588
                                                                                    ----------------------   ----------------------
      Total current liabilities
                                                                                                2,381,787                2,535,522
                                                                                    ----------------------   ----------------------
Deferred license revenue
                                                                                                        -                  550,000
Long-term debt, net of current portion
                                                                                                2,000,000                        -
                                                                                    ----------------------   ----------------------
                                                                                                2,000,000                  550,000
                                                                                    ----------------------   ----------------------

Commitments and contingencies (Note 9)


Stockholders' equity:
  Preferred  stock of $.01 par value - authorized  10,000,000  shares;
   Series A Convertible; 42,484 and 88,329 shares issued and outstanding
    as of June 30, 1999 and 1998, respectively;                                                       425                      883

    Series B Convertible; 13,575 and 18,875 shares issued and outstanding
      as of June 30, 1999 and 1998, respectively;                                                     136                      189

  Common stock of $.01 par value - authorized 75,000,000 shares;
     Issued and outstanding 7,137,595 and 4,099,623 shares as of June 30, 1999
     And 1998 respectively;                                                                        71,376                   40,996

  Additional paid-in capital                                                                   35,610,243               27,183,638

  Unamortized deferred compensation                                                              (18,558)                (516,179)

  Deficit accumulated during development stage                                               (35,322,364)             (23,319,980)

                                                                                    ----------------------   ----------------------
                                                                                                  341,258                3,389,547
                                                                                    ----------------------   ----------------------
                                                                                          $     4,723,045          $     6,475,069
                                                                                    ======================   ======================

            The accompanying notes to consolidated  financial  statements are an integral part of these financial statements.
</TABLE>


                                                                  F-2

<PAGE>
<TABLE>
<CAPTION>


                                                         PALATIN TECHNOLOGIES, INC.
                                                      (A Development Stage Enterprise)
                                                   Consolidated Statements of Operations

                                                    Inception
                                                (January 28, 1986)           Year                    Year                 Year
                                                     through                Ended                    Ended                Ended
                                                  June 30, 1999         June 30, 1999            June 30, 1998        June 30, 1997
                                                ------------------  -----------------------  ------------------ -------------------
<S>                                               <C>                      <C>                 <C>                 <C>
REVENUES:
     Grants and contracts                           $   3,304,629             $     59,977         $     33,967       $    350,173
     License fees and royalties                         1,234,296                  550,000                   -             350,000
     Other                                                318,917                        -                   -              22,184
                                                ------------------  -----------------------  ------------------ -------------------
          Total revenues                                4,857,842                  609,977              33,967             722,357
                                                ------------------  -----------------------  ------------------ -------------------



OPERATING EXPENSES:
     Research and development                          23,637,669                8,719,562           7,111,716           3,409,983

     General and administrative                        14,785,001                3,957,401           2,990,756           2,533,883

     Net intangibles write down                           259,334                        -                   -                   -
                                                ------------------  -----------------------  ------------------ -------------------

                                                                                12,676,963                               5,943,866
          Total operating expenses                     38,682,004                                   10,102,472
                                                ------------------  -----------------------  ------------------ -------------------


OTHER INCOME (EXPENSES):
     Interest income                                      948,400                  172,241             408,770             296,009

     Interest expense                                 (1,921,602)                (107,639)           (227,143)           (374,664)

     Merger costs                                       (525,000)                        -                   -                   -
                                                ------------------  -----------------------  ------------------ -------------------


          Total other income/(expenses)               (1,498,202)                   64,602             181,627            (78,655)
                                                ------------------  -----------------------  ------------------ -------------------

NET LOSS                                             (35,322,364)             (12,002,384)         (9,886,878)         (5,300,164)

PREFERRED STOCK DIVIDEND                              (3,121,525)                                    (232,590)         (2,888,935)
                                                                                         -
                                                ------------------  -----------------------  ------------------ -------------------

NET LOSS ATTRIBUTABLE TO COMMON                   $  (38,443,889)          $  (12,002,384)     $  (10,119,468)     $   (8,189,099)
                                                ==================  =======================  ================== ===================


Basic and diluted net loss per Common share         $     (31.57)            $      (2.02)       $      (3.15)       $      (2.80)
                                                ==================  =======================  ================== ===================

Weighted average number of Common shares
    outstanding used in computing basic and
    diluted net loss per Common share                   1,217,670                5,936,498           3,210,684           2,924,073
                                                ==================  =======================  ================== ===================

            The accompanying notes to consolidated  financial  statements are an integral part of these financial statements.
</TABLE>

                                                                  F-3

<PAGE>


<TABLE>
<CAPTION>

                                                        PALATIN TECHNOLOGIES, INC.
                                                     (A Development Stage Enterprise)
                                        Consolidated Statements of Stockholders' Equity (Deficit)


                                                                                          Preferred Stock
                                                         ---------------------------------------------------------------------------
                                                            Shares            Amount           Subscriptions       Receivable
                                                         ----------------  ----------------  ----------------  ----------------
<S>                                                            <C>              <C>               <C>               <C>
Balance at inception                                                   -        $        -        $        -        $        -
   Preferred stock subscriptions                                       -                 -             4,000            (4,000)
   Issuance of shares from inception                                   -                 -                 -                 -
   Net loss from inception                                             -                 -                 -                 -
                                                         ----------------  ----------------  ----------------  ----------------
Balance, August 31, 1995                                               -                 -             4,000            (4,000)
   Preferred stock subscriptions                                       -                 -            (4,000)            4,000
   Issuance of Preferred shares                                4,000,000             4,000                 -                 -
   Issuance of Common shares on
      $10,395,400 private placement                                    -                 -                 -                 -
   Shares earned but not issued                                        -                 -                 -                 -
   Issuance of Common shares                                           -                 -                 -                 -
   Net loss                                                            -                 -                 -                 -
                                                         ----------------  ----------------  ----------------  ----------------
Balance, June 25, 1996                                         4,000,000             4,000                 -                 -
  Conversion to Palatin Technologies, Inc.                    (4,000,000)           (4,000)                -                 -
Adjusted balance, June 25, 1996                                        -                 -                 -                 -
  Shares outstanding of Palatin
    Technologies, Inc.                                                 -                 -                 -                 -
  Issuance of Common shares                                            -                 -                 -                 -
  Purchase of treasury stock                                           -                 -                 -                 -
                                                         ----------------  ----------------  ----------------  ----------------
Balance, June 30, 1996                                                 -                 -                 -                 -
   Issuance of Preferred shares, net of expenses                 137,780             1,378                 -                 -
   Shares earned but not issued                                        -                 -                 -                 -
   Issuance of Common shares                                           -                 -                 -                 -
   Retirement treasury shares                                          -                 -                 -                 -
   Amortization of deferred compensation                               -                 -                 -                 -
   Net loss                                                            -                 -                 -                 -
                                                         ----------------  ----------------  ----------------  ----------------
Balance, June 30, 1997                                           137,780             1,378                 -                 -
   Issuance of Preferred shares, net of expenses                  18,875               189                 -                 -
   Shares earned but not issued                                        -                 -                 -                 -
   Conversion of Preferred shares into Common shares            (49,451)             (495)                 -                 -
   Issuance of Common shares                                           -                 -                 -                 -
   Retirement treasury shares                                          -                 -                 -                 -
   Amortization of deferred compensation                               -                 -                 -                 -
   Net loss                                                            -                 -                 -                 -
                                                         ----------------  ----------------  ----------------  ----------------
Balance, June 30, 1998                                           107,204             1,072                 -                 -
   Issuance of Preferred shares, net of expenses                       -                 -                 -                 -
   Shares earned but not issued                                        -                 -                 -                 -
   Conversion of Preferred shares into Common shares            (51,145)             (511)                 -                 -
   Issuance of Common shares                                           -                 -                 -                 -
   Retirement treasury shares                                          -                 -                 -                 -
   Amortization of deferred compensation                               -                 -                 -                 -
   Net loss                                                            -                 -                 -                 -
                                                         ================  ================  ================  ================
Balance, June 30, 1999                                            56,059        $      561        $        -        $        -
                                                         ================  ================  ================  ================


            The accompanying notes to consolidated  financial  statements are an integral part of these financial statements.
</TABLE>

                                                                  F-4

<PAGE>

<TABLE>
<CAPTION>


                                                              PALATIN TECHNOLOGIES, INC.
                                                           (A Development Stage Enterprise)
                                              Consolidated Statements of Stockholders' Equity (Deficit)
                                                                    - Continued -



                                                                     Common Stock                               Deficit
                                ----------------------------------------------------------------------------- Accumulated
                                                            Additional                          Unamortized    During
                                                             Paid-in      Earned but   Treasury    Deferred    Development
                                 Shares         Amount       Capital      not Issued    Stock   Compensation    Stage          Total
                            ------------  ------------  ------------- ---------    -------  ------------ -------------  ------------
<S>                         <C>           <C>           <C>           <C>          <C>      <C>          <C>            <C>
Balance at inception                  -      $      -     $       -   $      -     $    -    $       -     $        -      $      -
 Preferred stock
   subscriptions                      -             -             -          -          -            -              -             -
 Issuance of shares from
   inception                  6,922,069     1,177,786       100,000    110,833          -            -              -     1,388,619
 Net loss from inception              -             -             -          -          -            -     (4,235,059)   (4,235,059)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, August 31, 1995      6,922,069     1,177,786       100,000    110,833          -            -     (4,235,059)   (2,846,440)
 Preferred stock
  subscriptions                       -             -             -          -          -            -              -             -
 Issuance of Preferred
   shares                             -             -             -          -          -            -              -         4,000
 Issuance of Common shares
   on $10,395,400 private
   placement                 41,581,600     9,139,303             -          -          -            -              -     9,139,303
 Shares earned but not
   issued                             -             -             -    266,743          -            -              -       266,743
 Issuance of Common
   shares                     1,054,548       458,977      (100,000)  (324,546)         -            -              -        34,431
 Net loss                             -             -             -          -          -            -     (3,897,879)   (3,897,879)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, June 25, 1996       49,558,217    10,776,066             -     53,030          -            -     (8,132,938)    2,700,158
 Conversion to Palatin
   Technologies, Inc.       (46,807,465)  (10,748,558)   10,752,558          -          -            -              -             -
  Adjusted balance, June
    25, 1996                  2,750,752        27,508    10,752,558     53,030          -            -     (8,132,938)    2,700,158
 Shares outstanding of
  Palatin Technologies,
  Inc.                          108,188         1,082        (1,082)         -          -            -              -             -
 Issuance of Common shares        25,754           257       139,459          -          -            -              -       139,716
 Purchase of treasury
  stock                               -             -             -          -     (1,667)           -              -        (1,667)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, June 30, 1996         2,884,694        28,847    10,890,935     53,030     (1,667)           -     (8,132,938)    2,838,207

                                      F-5

<PAGE>

 Issuance of Preferred
  shares, net of expenses              -             -    11,635,653          -          -            -              -    11,637,031
 Shares earned but not
  issued                               -             -             -    250,141          -            -              -       250,141
 Issuance of Common shares       135,987         1,360       316,761   (303,171)         -            -              -        14,950
 Retirement treasury shares         (308)           (3)       (1,664)         -      1,667            -              -             -
 Issuance of stock options
   below fair market value             -             -     1,472,716          -          -   (1,472,716)             -
 Amortization of deferred              -             -             -          -          -      394,383              -       394,383
   compensation
    Net loss                           -             -             -          -          -            -    (5,300,164)   (5,300,164)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, June 30, 1997        3,020,373        30,204    24,314,401          -          -   (1,078,333)   (13,433,102)    9,834,548
 Issuance of Preferred
   shares, net of expenses            -             -     1,573,295          -          -            -              -     1,573,295
 Issuance of Preferred
   shares expense recapture           -             -        49,733          -          -            -              -        49,733
 Issuance of Common shares       66,696           666        94,873          -          -            -              -        95,539
 Issuance of Common shares
   upon conversion of
   Preferred shares           1,012,554        10,126        (9,820)         -          -            -              -             -
 Issuance of stock options
    below fair market value           -             -     1,161,156          -          -   (1,161,156)             -             -
 Amortization of deferred             -             -             -          -          -    1,723,310              -     1,723,310
     compensation
   Net loss                           -             -             -          -          -            -     (9,886,878)   (9,886,878)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, June 30, 1998        4,099,623        40,995    27,183,638          -          -     (516,179)   (23,319,980)    3,389,547
 Issuance of Common shares    1,842,101        18,421     7,594,182          -          -            -              -     7,612,603
 Issuance of Common shares
   upon conversion of
   Preferred shares           1,115,740        11,158       (10,655)         -          -            -              -            (9)
 Issuance of Common shares
   upon exercise of warrants      9,874            99        18,676          -          -            -              -        18,775
 Issuance of Common shares
   upon exercise of options      70,257           703        13,348          -          -            -              -        14,051
 Issuance of stock options
    below fair market value           -             -       811,054          -          -     (811,054)             -             -
 Amortization of deferred             -             -             -          -          -    1,308,675              -     1,308,675
     compensation
   Net loss                           -             -             -          -          -            -    (12,002,384)  (12,002,384)
                            ------------  ------------  ------------  ---------    -------  -----------  -------------  ------------
Balance, June 30, 1999        7,137,595    $   71,376   $35,610,243   $      -     $    -   $  (18,558)  $(35,322,364)  $   341,258
                            ============  ============  ============  =========    =======  ===========  =============  ============

            The accompanying notes to consolidated  financial  statements are an integral part of these financial statements.
</TABLE>
                                      F-6

<PAGE>

<TABLE>
<CAPTION>

                                PALATIN TECHNOLOGIES, INC.
                             (A Development Stage Enterprise)
                           Consolidated Statements of Cash Flows




                                                     Inception
                                                    (January 28,          Year               Year              Year
                                                        1986)
                                                      through             Ended               Ended           Ended
                                                    June 30, 1999      June 30, 1999      June 30, 1998   June 30, 1997
                                                  ------------------  ---------------- ------------------ ---------------
<S>                                                  <C>               <C>                <C>              <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net loss                                           $(35,322,364)     $(12,002,384)       $(9,886,878)     $(5,300,164)
  Adjustments to reconcile net loss to net cash
   used for operating activities:
      Depreciation and amortization                       837,279           232,625            230,160           65,920
      License fee                                         500,000                 -            500,000
      Interest expense on note payable                     72,691                 -                  -           19,304
      Accrued interest on long-term financing             796,038                 -                  -                -
      Accrued interest on short-term financing              7,936                 -                  -         (100,000)
      Intangibles and equipment write down                278,318                 -                  -                -
      Common stock and notes payable issued for
          expenses                                        751,038           127,350             77,500          250,141
      Settlement with consultant                         (28,731)                 -                  -                -
      Deferred revenue                                          -         (550,000)                  -          550,000
      Amortization of deferred compensation             3,426,368         1,308,675          1,723,310          394,383
      Changes in certain operating assets and
          liabilities:
        Accounts receivable                                     -                 -             84,562          (79,988)
        Prepaid expenses and other                      (147,781)           129,985           (102,770)        (108,566)
        Other                                           (709,700)           (79,000)          (199,010)          (4,353)
        Accounts payable                                1,115,994           655,348            145,273          101,849
        Accrued expenses and other                        804,626           130,505           (189,229)          84,790
                                                  ----------------    --------------     --------------  ---------------
            Net cash used for operating
               activities                            (27,618,288)       (10,046,896)        (7,617,082)      (4,126,684)
                                                  ----------------    --------------     --------------  ---------------

CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchases of short term investments                    (454,827)         (454,827)                 -                -
  Purchases of property and equipment                  (2,189,308)          (69,145)        (1,505,229)        (279,705)
                                                  ----------------    --------------     --------------  ---------------
            Net cash used for investing
               activities                              (2,644,135)         (523,972)        (1,505,229)        (279,705)
                                                  ----------------    --------------     --------------  ---------------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Proceeds from notes payable, related party             302,000                 -                  -                -
   Payments on notes payable, related party              (302,000)                -            (80,000)               -
   Proceeds from senior bridge notes payable            1,850,000                 -                  -                -
   Payments on senior bridge notes payable             (1,850,000)                -                  -       (1,000,000)
   Proceeds from notes payable and
     long-term debt                                     3,951,327         2,000,000                  -                -
   Payments on notes payable and
     long-term debt                                    (1,951,327)         (939,588)          (869,551)        (230,175)
   Proceeds from paid-in capital from Common
     stock warrants                                       100,000                 -                  -                -
   Proceeds from Common stock, stock option
     issuances, net                                    17,287,565         7,518,070             18,037           14,950
   Proceeds from Preferred stock, net                  13,210,326                 -          1,573,295       11,637,031
   Purchase of treasury stock                             (1,667)                 -                  -                -
                                                  ----------------    --------------     --------------  ---------------
            Net cash provided by financing
               activities                              32,596,224         8,578,482            641,781       10,421,806
                                                  ----------------    --------------     --------------  ---------------

NET INCREASE (DECREASE) IN CASH                         2,333,801       (1,992,386)        (8,480,530)        6,015,417

CASH, beginning of period                                       -         4,326,187         12,806,717        6,791,300
                                                  ----------------    --------------     --------------  ---------------

CASH, end of period                                   $ 2,333,801       $ 2,333,801        $ 4,326,187     $ 12,806,717
                                                  ================    ==============     ==============  ===============

      The accompanying notes to consolidated financial statements are an integral part of these financial statements.

</TABLE>
                                      F-7

<PAGE>

<TABLE>
<CAPTION>


                                             PALATIN TECHNOLOGIES, INC.
                                          (A Development Stage Enterprise)
                                       Consolidated Statements of Cash Flows


                                                     Inception
                                                  (January 28, 1986)      Year               Year              Year
                                                      through             Ended             Ended              Ended
                                                    June 30, 1999     June 30, 1999    June 30, 1998     June 30, 1997
                                                  ------------------ ---------------- ----------------- ----------------
<S>                                               <C>                <C>               <C>              <C>
SUPPLEMENTAL CASH FLOW INFORMATION:
   Cash paid for interest                                $598,343          $ 87,536         $ 281,285        $ 151,999
                                                  ================   ===============   ===============  ===============

NON-CASH TRANSACTION:
   Settlement of accounts payable with
      equipment                                            $  900         $      -          $       -        $       -
                                                  ================   ===============   ===============  ===============

NON-CASH STOCK ACTIVITY:
   Conversion of loans from employees to
      Common stock                                       $ 74,187         $      -          $       -        $       -
                                                  ================   ===============   ===============  ===============
   Conversion of note payable to Common stock            $ 16,000         $      -          $       -        $       -
                                                  ================   ===============   ===============  ===============
   Common stock issued for equipment                     $  2,327         $      -          $       -        $       -
                                                  ================   ===============   ===============  ===============
   Common stock issued for expenses
      (included above)                                   $884,565         $ 127,350         $  77,500        $ 394,383
                                                  ================   ===============   ===============  ===============
   Common stock issued for accrued salaries
      and bonuses                                        $ 16,548         $      -          $       -        $       -
                                                  ================   ===============   ===============  ===============
   Accrued interest payable in Common stock              $679,097         $      -           $      -        $ 303,171
                                                  ================   ===============   ===============  ===============

            The accompanying notes to consolidated  financial  statements are an integral part of these financial statements.
</TABLE>

                                      F-8
<PAGE>


                           PALATIN TECHNOLOGIES, INC.
                        (A Development Stage Enterprise)
                   Notes to Consolidated Financial Statements

(1)            ORGANIZATION ACTIVITIES:

     Nature of Business -- Palatin Technologies, Inc. ("Palatin" or the
"Company") is a development-stage, pharmaceutical company headquartered in
Princeton, NJ with its research facility in Edison, NJ. The Company is dedicated
to developing and commercializing products and technologies for diagnostic
imaging and ethical drug development utilizing peptide, monoclonal antibody, and
radiopharmaceutical technologies. The Company is concentrating on the following
products and technologies:

     (i)  LeuTech(TM), an infection and inflammation imaging product
          ("LeuTech"),

     (ii) PT-14, a peptide hormone product for the treatment of sexual
          dysfunction ("PT-14"), and

     (iii) Metal Ion-induced Distinctive Array of Structures ("MIDAS(TM)")
          metallopeptide technology ("MIDAS technology").


     Corporate History -- Palatin, formerly Interfilm, Inc., was incorporated
under the laws of the State of Delaware on November 21, 1986. From November 4,
1993 until May 10, 1995, the date on which the Board of Directors substantially
curtailed the operations of the Company, the Company had been primarily engaged
in the business of exploiting rights related to its interactive motion picture
process, including the production and distribution of interactive motion
pictures for initial exhibition in theaters and subsequently in enhanced
versions for distribution to the home market. On June 25, 1996, a newly formed,
wholly-owned subsidiary of the Company, Interfilm Acquisition Corporation
("InSub"), a New Mexico corporation, merged with and into RhoMed Incorporated
("RhoMed"), a New Mexico corporation, with all outstanding shares of RhoMed
equity securities ultimately being exchanged for the Company's common stock (the
"Merger"). As a result of the Merger, RhoMed became a wholly-owned subsidiary of
the Company, with the holders of RhoMed preferred stock and RhoMed common stock
(including the holders of "RhoMed Securities" as hereafter defined) receiving an
aggregate of approximately 96% interest in the equity securities of the Company
on a fully-diluted basis. Additionally, all warrants and options to purchase
common stock of RhoMed outstanding immediately prior to the Merger (the "RhoMed
Securities"), including without limitation, any rights underlying RhoMed's
qualified or non-qualified stock option plans, were automatically converted into
rights upon exercise to receive the Company's common stock in the same manner in
which the shares of RhoMed common stock were converted. Since the former
stockholders of RhoMed retained more than a 50% controlling interest in the
surviving company (Palatin), the Merger was accounted for as a reverse merger,
with RhoMed deemed as the acquiror for accounting purposes. The business of
RhoMed, conducted by Palatin since June 25, 1996, represents the on-going
business of Palatin. Certain assets and liabilities of the Company and a
subsidiary existing prior to the Merger, consisting principally of certain
intellectual property and litigation claims against Sony Corporation of America
and related entities, were transferred to an unaffiliated limited liability
partnership for the benefit of the Company's stockholders of record as of June
21, 1996 (pre-Merger stockholders). The historical financial statements prior to
June 25, 1996, are those of RhoMed, except that the stock transactions have been
presented in the notes on an as if converted basis. References to the Company's
activities,

                                      F-9

<PAGE>

results of operations and financial condition prior to June 25, 1996 are to
RhoMed unless otherwise specified.

     Charter Amendment - On September 5, 1997, an amendment to the Restated
Certificate of Incorporation of the Company (the "Amendment") was filed, which:

     (i)  increased the total number of authorized shares of Common Stock from
          25,000,000 to 75,000,000.

     (ii) Increased the total number of authorized shares of Preferred Stock
          from 2,000,000 to 10,000,000.

     (iii) Effected a 1-for-4 reverse split of Common Stock..

     (iv) The consolidated financial statements have been retroactively restated
          to reflect the Amendment.



(2)  BUSINESS RISK AND LIQUIDITY:

     As shown in the accompanying financial statements, the Company incurred
substantial net losses of $12,002,384 for the year ended June 30, 1999 and has a
deficit accumulated in the development stage of $35,322,364 as of June 30, 1999.
The Company anticipates incurring additional losses over at least the next
several years, and such losses are expected to increase as the Company expands
its research and development activities relating to various technologies. To
achieve profitability, the Company, alone or with others, must successfully
develop and commercialize its technologies and proposed products, conduct
pre-clinical studies and clinical trials, obtain required regulatory approvals
and successfully manufacture and market such technologies and proposed products.
The time required to reach profitability is highly uncertain, and there can be
no assurance that the Company will be able to achieve profitability on a
sustained basis, if at all.

     Management plans to continue to refine its operations, control expenses,
evaluate alternative methods to conduct its business, and seek available and
attractive sources of financing and sharing of development costs through
strategic collaboration agreements similar to the one signed on August 17, 1999
with Mallinckrodt, Inc. (see Note 14), or other resources. Management believes
that through one or a combination of such factors that it will be able to obtain
adequate financing to fund the Company's operations through fiscal year 2000,
based on current expenditure levels. There can be no assurance that the
Company's efforts will be successful.

(3)  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

     Principles of Consolidation -- The consolidated financial statements
include the accounts of Palatin and its wholly owned inactive subsidiaries,
RhoMed, Inc. and Interfilm Technologies, Inc. All significant intercompany
accounts and transactions have been eliminated in consolidation.

     Use of Estimates -- The preparation of consolidated financial statements in
conformity with generally accepted accounting principles requires management to
make estimates and assumptions that affect the reported amount of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the consolidated financial statements and the reported amounts of revenues and
expenses during the reporting period. Actual results could differ from those
estimates.

                                      F-10

<PAGE>

     Fiscal Year -- Effective June 30, 1996, Palatin and RhoMed each changed its
fiscal year end to June 30. The fiscal year ends of Palatin and RhoMed prior to
the Merger were December 31 and August 31, respectively.

     Short-Term Investment -- The Company accounts for its investments in
accordance with Statement of Financial Accounting Standards No. 115 "Accounting
For Certain Investments in Debt and Equity Securities." The Company classifies
such investments as available for sale investments and as such all investments
are recorded at fair value. The investments consist of certificates of deposit.
As of June 30, 1999 the unrealized gain on investments was immaterial.

     Fixed Assets -- Fixed assets consist of equipment, office furniture and
leasehold improvements. Fixed assets are stated at cost. Depreciation is
recognized using the straight-line method over the estimated useful lives of 5
years for equipment, 7 years for office furniture and over the term of the lease
for leasehold improvements. Maintenance and repairs are expensed as incurred
while expenditures that extend the useful life of an asset are capitalized.

     Impairment of Long-Lived Assets -- The Company complies with Statement of
Financial Accounting Standards No. 121, "Accounting for the Impairment of
Long-Lived Assets and for Long-Lived Assets to Be Disposed Of." The Company
reviews its long-lived assets for impairment whenever events or changes in
circumstances indicate that the carrying amount of the assets may not be fully
recoverable. To determine recoverability of its long-lived assets, the Company
evaluates the probability that future undiscounted net cash flows, without
interest charges, will be less than the carrying amount of the assets.
Impairment is measured at fair value.

     Revenue Recognition - Grant and contract revenues are recognized as
services are provided. License and royalty revenues are recognized when earned.

     Research and Development Costs -- The costs of research and development
activities are expensed as incurred.

     Stock Options and Warrants -- Warrants and the majority of common stock
options have been issued at exercise prices greater than, or equal to, their
fair market value at the date granted. Accordingly, no value has been assigned
to these instruments. However, certain stock options were issued under non-plan
option agreements and a non-qualified stock option plan at exercise prices below
market value. The difference between the exercise price and the market value of
these securities has been recorded as deferred compensation and is being
expensed over the vesting period of the option. In addition, during the fiscal
year stock options were granted to non-employees for past services. The deemed
value for accounting purposes of such options was charged to the statement of
operations.

     Income Taxes -- The Company and its subsidiaries intend to file
consolidated federal and combined state income tax returns. The Company accounts
for income taxes in accordance with Statement of Financial Accounting Standards
No. 109 ("SFAS 109"), "Accounting for Income Taxes." SFAS 109 requires, among
other things, the use of the liability method in computing deferred income
taxes.

     The Company provides for deferred income taxes relating to timing
differences in the recognition of income and expense items (primarily relating
to depreciation, amortization and certain leases) for financial and tax
reporting purposes. Such amounts are measured using current tax laws and
regulations in accordance with the provisions of SFAS 109.

                                      F-11

<PAGE>

     In accordance with SFAS 109, the Company has recorded a valuation allowance
against the realization of its deferred tax assets. The valuation allowance is
based on management's estimates and analysis, which includes tax laws which may
limit the Company's ability to utilize its tax loss carryforwards.

     Net Loss per Common Share -- Effective December 31, 1997 the Company
adopted SFAS No. 128, "Earnings per Share" ("SFAS 128"), which supersedes
Accounting Principles Board Opinion No. 15, "Earnings per Share." SFAS 128
requires dual presentation of basic and diluted earnings per share ("EPS") for
complex capital structures on the face of the statement of operations. Basic EPS
is computed by dividing the income (loss) by the weighted average number of
common shares outstanding for the period. Diluted EPS reflects the potential
dilution from the exercise or conversion of securities into Common stock, such
as stock options. For the years ended June 30, 1999, 1998 and 1997 and for the
period from inception (January 28, 1986) through June 30, 1998, there were no
dilutive effects of stock options or warrants as the Company incurred a net loss
in each period. Options and warrants to purchase 4,557,604 shares of Common
Stock at prices ranging from $0.20 to $360 per share were outstanding at June
30, 1999. In accordance with the provisions of SFAS 128, EPS for prior periods
have been restated.

     Reclassifications -- Certain reclassifications have been made to the prior
year financial statements to conform to the current year presentation.

     Fair Value of Financial Instruments -- Statement of Financial Accounting
Standards No. 107 ("SFAS 107"), "Disclosures about Fair Value of Financial
Instruments," requires disclosures of fair value information about financial
instruments, whether or not recognized in the balance sheet, for which it is
practicable to estimate the value. In cases where quoted market prices are not
available, fair values are based on estimates using present value or other
valuation techniques. These techniques are significantly affected by the
assumptions used, including discount rate and estimates of future cash flows. In
that regard, the derived fair value estimates cannot be substantiated by
comparison to independent markets and, in many cases, could not be realized in
immediate settlement of the instrument. SFAS 107 excludes certain financial
instruments and all non-financial instruments from its disclosure requirements.
Accordingly, the aggregate fair value amounts presented do not represent the
underlying value of the Company.

     The following methods and assumptions were used by the Company in
estimating its fair value disclosures for financial instruments: the carrying
amount reported on the balance sheet approximates the fair value for cash,
short-term borrowings and current maturities of long-term debt; and the fair
value for the Company's fixed rate long-term debt is estimated based on the
current rates offered to the Company for debt of the same remaining maturities.
Based on the above, the amount reported on the balance sheet approximates the
fair value.

     New Accounting Pronouncements - Effective July 1, 1998, the Company adopted
SFAS No. 130, "Reporting Comprehensive Income"("SFAS 130"). This statement
requires companies to classify items of other comprehensive income by their
nature in a financial statement and display the accumulated balance of other
comprehensive income separately from retained earnings and additional paid-in
capital in the equity section of a statement of financial position. For the
years ended June 30, 1999, 1998 and 1997, the Company's comprehensive income
consists only of its net loss.

     Effective July 1, 1998 the Company adopted SFAS No. 131, "Disclosure About
Segments of an Enterprise and Related Information" ("SFAS 131"). This statement
establishes additional

                                      F-12

<PAGE>

standards for segment reporting in the financial statements. The Company
operates in one industry segment and, accordingly, the adoption of SFAS 131 had
no effect on the Company.


(4)  RELATED PARTY TRANSACTIONS:

     During the fiscal year ended August 31, 1995, the Company encountered
serious liquidity and working capital deficiencies. As a result, effective April
1995, the Company entered into a letter of intent with The Castle Group Ltd.
("Castle"), a company controlled by Lindsay A. Rosenwald, M.D. ("Dr.
Rosenwald"), under which Castle agreed to arrange for a line of credit of up to
$300,000 to finance ongoing operations; agreed to arrange for future financings;
and the Company agreed to sell to Castle or its designees, for $4,000
consideration paid, 4,000,000 shares of preferred stock which converted into
466,952 shares of Common Stock. At the time the letter of intent was entered
into with Castle, the Company was insolvent and its equity had nominal value;
accordingly, the sale of preferred stock to Castle or its designees was recorded
at the nominal $4,000 consideration paid. The issuance of the preferred stock to
designees of Castle was consummated on October 25, 1995 and resulted in Dr.
Rosenwald and his designees obtaining majority ownership and control of the
Company on that date.

     On July 28, 1995, the Board of Directors approved an offering of senior
bridge notes and warrants (the "Class A Offering"), for which Paramount Capital,
Inc. ("Paramount"), of which Dr. Rosenwald is the Chairman, served as placement
agent. Two of the then three members of the Board of Directors of RhoMed were
employees of entities controlled by Dr. Rosenwald. The transaction and selection
of the placement agent was ratified by disinterested stockholders on August 15,
1995. Paramount received (i) a cash commission equal to 6% of the gross proceeds
from the sale of the units or $60,000, (ii) a non-accountable expense allowance
equal to 3% of gross proceeds or $30,000 and (iii) placement agent's warrants,
on the same terms as the warrants, equal to 15% of the Common Stock underlying
the warrants issued in the Class A Offering. Additionally, investment funds
managed by a company of which Dr. Rosenwald is president purchased senior bridge
notes with a face value of $100,000 and warrants to purchase 13,824 shares of
Common Stock at $.22 per share.

     On November 27, 1995, the Company's Board of Directors approved an offering
of senior bridge notes and warrants (the "Class B Offering"), for which
Paramount served as placement agent, which was approved by the two disinterested
directors. Paramount received (i) a cash commission equal to 9% of the gross
proceeds from the sale of the units or $76,500, (ii) a non-accountable expense
allowance equal to 4% of gross proceeds or $34,000 and (iii) placement agent's
warrants at an exercise price of $6.52 per share but otherwise on the same terms
as the warrants, equal to 5% of the Common Stock underlying the warrants issued
in the Class B Offering. Additionally, investment funds managed by a company of
which Dr. Rosenwald is president purchased senior bridge notes with a face value
of $100,000 and warrants to purchase 4,608 shares of Common Stock at $2.72 per
share.

     On March 4, 1996, the Board of Directors approved an offering of common
stock (the "Common Stock Offering") and authorized an offering committee of the
Board of Directors, consisting of the two disinterested directors, to determine
the placement agent for the Common Stock Offering. The selection of Paramount as
placement agent was approved by the disinterested directors, who concluded that
alternative means of financings were not available to the Company on terms more
favorable than the Common Stock Offering. The price per share of common stock in
the Common Stock Offering of $5.44 was determined through negotiations between
the Company and Paramount. On May 14, 1996, the disinterested directors approved
an increase in the Common Stock Offering. Paramount received (i) a cash
commission equal to 9% of the gross proceeds from the sale of the units

                                      F-13

<PAGE>

or $868,000, (ii) a non-accountable expense allowance equal to 4% of gross
proceeds or $386,000 and (iii) placement agent's warrants, equal to 10% of the
common stock issued in the Common Stock Offering, at an exercise price of $6.52
per common stock share, which are freely exercisable, terminate ten years from
the date of issuance and have certain registration rights. Additionally
investment funds managed by a company of which Dr. Rosenwald is president
purchased 322,674 shares of Common Stock at $5.44 per share.

     On December 2, 1996, the Board of Directors approved an offering of Series
A Preferred Convertible Stock (the "Series A Preferred Offering"), which was
approved by the four disinterested directors. The selection of Paramount as
placement agent was approved by the disinterested directors, who concluded that
alternative means of financings were not available to the Company on terms more
favorable than the Series A Preferred Offering. The Series A Preferred
Convertible Stock was initially convertible into Common Stock at a 15% discount
to the average closing bid price of the Company's Common Stock for the twenty
(20) consecutive trading days immediately preceding the final closing. The 15%
discount on conversion of the Series A Preferred Convertible Stock to Common
Stock was determined through negotiations between the Company and the placement
agent. The 15% discount has been reflected in the Company's consolidated
statement of operations as a dividend to the Series A Preferred Convertible
Stock of $2,888,935. The Series A Preferred Convertible Stock is currently
convertible into Common Stock at a price per share of Common Stock of $4.67.
Paramount received (i) a cash commission equal to 9% of the gross proceeds from
the sale of the units or $1,240,020, (ii) a non-accountable expense allowance
equal to 4% of gross proceeds or $551,120 and (iii) placement agent's warrants,
equal to 10% of the Series A Preferred Convertible Stock issued in the Series A
Preferred Offering at an exercise price of $110.00 per share of Series A
Preferred Convertible Stock, which terminate ten years from the date of issuance
and have certain registration rights. The Company has valued those warrants at
$573,537. In the Series A Preferred Offering, investment funds managed by a
company of which Dr. Rosenwald is president purchased 10,000 shares of Series A
Preferred Convertible Stock at $100 per share.

     Pursuant to the placement agency agreement for the Series A Preferred
Offering, the Company entered into an introduction agreement with Paramount (the
"Introduction Agreement"), under which Paramount acts as the Company's
non-exclusive financial advisor for a minimum period of 18 months commencing
January 1, 1997, and received (i) out-of-pocket expenses incurred in connection
with services performed under the Introduction Agreement, (ii) a retainer of
$72,000, (iii) a warrant to purchase 6,250 shares of Common Stock at $8.75 per
share issued to a designee of Paramount and (iv) will receive a percentage or
lump sum success fees in the event that Paramount assists the Company in
connection with certain financing and strategic transactions. The Introduction
Agreement replaced a similar agreement in effect from September 1, 1996 through
December 31, 1996, pursuant to which Paramount Capital received a retainer of
$5,000 per month and a warrant to purchase 6,250 shares of Common Stock at $9.00
per share issued to a designee of Paramount.

     On April 28, 1998, the Board of Directors approved an offering of Series B
Preferred Convertible Stock (the "Series B Preferred Offering"), which was
approved by the four disinterested directors. The selection of Paramount as
finder pursuant to a finder's fee agreement was approved by the disinterested
directors, who concluded that alternative means of financings were not available
to the Company on terms more favorable than the Series B Preferred Offering. The
Series B Preferred Convertible Stock was initially convertible into Common Stock
at a conversion price per share of Common Stock of $5.50, 12.3% discount to the
average closing bid price of the Company's Common Stock as of the closing, which
conversion price was determined through negotiations between the

                                      F-14

<PAGE>

Company and the investors. The 12.3% discount has been reflected in the
Company's consolidated statement of operations as a dividend to the Series B
Preferred Convertible Stock of $232,590. The Series B Preferred Convertible
Stock is currently convertible into Common Stock at a price per share of Common
Stock of $3.52. Paramount received a finder's fee equal to 10% of the gross
proceeds from the sale of the units or $188,750.

     Upon the closing of the equity investments sold during the fiscal year
ended June 30, 1999, the Company issued to Paramount, or its designees, pursuant
to the Introduction Agreement referenced above; (i) warrants to purchase a total
of 186,923 shares of the Company's Common Stock at prices ranging from $4.70 to
$5.57, (ii) paid commissions of $295,020 in cash and (iii) paid non accountable
expenses of $30,000 in cash.

     Management of the Company believes that the terms of the transactions and
the agreements described above are on terms at least as favorable as those which
it could otherwise have obtained from unrelated parties.



(5)  PROPERTY AND EQUIPMENT:

               Property and equipment consists of the following:


                                       June 30,            June 30,
                                         1999                1998
                                       --------            --------
Office equipment                      $ 374,147           $ 361,087

Laboratory equipment                    428,162             380,631

Leasehold improvements                1,331,658           1,323,104
                                   -------------          ----------
                                      2,133,967           2,064,822

Less: Accumulated depreciation
     and amortization                  (676,362)           (454,705)
                                       ---------           ---------
                                     $1,457,605          $1,610,117
                                     ===========         ===========



(6)  LONG-TERM FINANCING:

     On May 13, 1999, the Company received $2,000,000 pursuant to a Subordinated
Non-negotiable Promissory Note from Mallinckrodt, Inc. Principle and interest,
accrued at 9% per annum, was due by December 31, 2000. The Note was secured by
the assets of the Company. This note and accrued interest of $46,489 was
satisfied pursuant to the execution of a Strategic Collaboration Agreement
signed with Mallinckrodt, Inc. on August 17, 1999. (See Note 14)



(7)  SENIOR BRIDGE NOTES:

     Class A Offering -- On July 28, 1995, the Company initiated the Class A
Offering of 40 units, with each unit consisting of a $25,000 face amount senior
bridge note and a warrant to purchase 3,456 shares of Common Stock at an
exercise price of $.22 per share. All units were purchased, with net proceeds to
the Company of approximately $907,000 after payment of the placement agent's
commissions and expenses ($90,000) and offering expenses (approximately $3,000).
The nominal

                                      F-15

<PAGE>

exercise price for the warrants reflected the seriously troubled financial
condition of the Company on the date of the transaction, and accordingly, no
value was assigned to the warrants upon issuance. The senior bridge notes sold
in the Class A Offering accrued interest at 1% per month, and were payable, with
interest, one year from the date of issuance. In August and September of 1996,
the Class A Offering notes with accrued interest were repaid in full. The
warrants are exercisable at any time, terminate ten years from the date of
issuance, and have certain registration rights.

     Class B Offering -- On November 27, 1995, the Company initiated the Class B
Offering of up to 7.5 units at $100,000 per unit, subsequently increased to 8.5
units, with each unit consisting of a $100,000 face amount senior bridge note
and a warrant to purchase an equivalent of 4,608 shares of common stock at an
exercise price of $2.72. Net proceeds to the Company were $739,500 after payment
of the placement agent's commissions and expenses ($110,500). Due to the
seriously troubled financial condition of the Company on the date of the
transaction, no value was assigned to the warrants upon issuance. The senior
bridge notes sold in the Class B Offering accrued interest at 1% per month, and
were payable, with interest 12 months from the date of issuance, unless
accelerated under certain circumstances. On June 28, 1996, the Class B Offering
notes with accrued interest were paid in full. The warrants are exercisable at
any time, terminate five years from the date of issuance, have certain
registration rights, and contain a call provision.


(8)  NOTES PAYABLE

     In the fiscal year ended August 31, 1992, the Company issued four ten year
notes totaling $80,000 as part of a combined stock and debt offering. The notes,
in the face amount of $20,000, accrued interest at 10% per year. On November 3,
1997, the notes with accrued interest were paid in full.


(9) COMMITMENTS AND CONTINGENCIES:

     Leases -- The Company leases two facilities in New Jersey under
non-cancelable operating leases. Future minimum lease payments under those two
leases are as follows:


Fiscal Year

2000                        $   223,000

2001                             253,000

2002                             255,330

2003                             204,800

2004 and thereafter              828,588
                            ------------
                            $1,969,718


     Employment Agreements -- On November 27, 1996, the Board of Directors of
the Company ratified an employment agreement (the "Employment Agreement") with
Edward J. Quilty ("Mr. Quilty") to serve as President and Chief Executive
Officer, originally entered into with RhoMed prior to the Merger. Pursuant to
the Employment Agreement, Mr. Quilty was granted an option to acquire such
number of shares of common stock as equal a 10% fully diluted equity interest in
RhoMed, which as a result of the Merger became an option to purchase Common
Stock of the

                                      F-16

<PAGE>

Company at an exercise price of $.22 per share, which option vested in 36 equal
increments on each of the first 36 monthly anniversaries of the commencement of
Mr. Quilty's employment (the "Initial Option"). The Employment Agreement further
provided for anti-dilution options, pursuant to which Mr. Quilty was issued
options to acquire the number of shares that, when aggregated with the shares
issuable pursuant to the Initial Option, equaled not less than 3.75% of the
shares of Common Stock of the Company. The Employment Agreement was for an
initial period of one year, with automatic one year extensions, and provided
that, on certain termination events, the portion of the options that would
otherwise have terminated without vesting, would vest and be exercisable upon
termination, and also provided for specified termination pay.

     This agreement terminated on July 31, 1999 pursuant to the ratification of
a new employment agreement with Mr. Quilty. Under this new employment agreement,
Mr. Quilty will continue to serve as Chairman of the Board and Chief Executive
Officer. This agreement is for an initial period of three years commencing
August 1, 1999.

     On October 12, 1998, the Board of Directors ratified employment agreements
with three officers of the Company, Stephen T. Wills, Carl Spana, Ph.D. and
Charles Putnam effective September 11, 1998. Pursuant to the agreements, each is
serving as an Executive Vice President of the Company. The agreements expire in
September 2001 and provide for minimum annual salaries ranging from $65,000 to
$200,000 respectively. Pursuant to the agreements, each officer was granted
options to purchase 50,000 shares of the Company's Common Stock at an exercise
price of $2.50, the closing price of the Company's Common Stock on September 11,
1998. These options vest over a two year period with the first 33% vested
immediately, the next 33% vested on the first anniversary of the date of grant
and the remaining 34% vested on the second anniversary of the date of grant. The
agreements include specified termination pay and vesting of stock options under
certain termination events.

     Consulting Agreements -- The Company is obligated under three consulting
agreements to make payments totaling $112,800 in the year ending June 30, 2000.

     License Agreements -- The Company has four license agreements that require
minimum yearly payments. Future minimum payments under the license agreements
are: 2000- $200,000, 2001 - $150,000, 2002 - $200,000, 2003 - $200,000 and 2004
- - $200,000.



(10) STOCKHOLDERS' EQUITY (DEFICIT):

     Series B Preferred Offering --As of April 28, 1998, the Company completed a
private placement of 18,875 shares of Series B Convertible Preferred Stock at a
price per share of $100. The net proceeds to the Company were approximately
$1,600,000, after deducting the finder's fee and other expenses of the Series B
Preferred Offering.

     Each share of Series B Convertible Preferred Stock is convertible at any
time, at the option of the holder, into the number of shares of Common Stock
equal to $100 divided by the "Series B Conversion Price." The current Series B
Conversion Price is $3.52, so each shares of Series B Convertible Preferred
Stock is currently convertible into approximately 28.4 shares of Common Stock.
The conversion price for Series B Convertible Preferred Stock is subject to
adjustment upon certain events, including payment of stock dividends,
distributions, and tender offer or merger announcements.

     Series A Preferred Offering -- On December 2, 1996, the Company commenced
the Series A Preferred Offering of units at a price of $100,000 per unit, each
unit consisting of 1,000 shares of Series A Convertible Preferred Stock. The
final closing on the Series A Preferred Offering was

                                      F-17

<PAGE>

effective as of May 9, 1997, with the Company having sold an aggregate total of
137.78 units, representing 137,780 shares of Series A Convertible Preferred
Stock, for net proceeds to the Company of approximately $11,637,000, after
deducting commission and other expenses of the Series A Preferred Offering.

     Each share of Series A Convertible Preferred Stock is convertible at any
time, at the option of the holder, into the number of shares of Common Stock
equal to $100 divided by the "Series A Conversion Price". The current Series A
Conversion Price is $4.67, so each share of Series A Convertible Preferred Stock
is currently convertible into approximately 21.4 shares of Common Stock. The
Series A Conversion Price is subject to adjustment, under certain circumstances,
upon the sale or issuance of Common Stock for consideration per share less than
either (i) the Conversion Price in effect on the date of such sale or issuance,
or (ii) the market price of the Common Stock as of the date of such sale or
issuance. The Conversion Price is also subject to adjustment upon the occurrence
of a merger, reorganization, consolidation, reclassification, stock dividend or
stock split which will result in an increase or decrease in the number of shares
of Common Stock outstanding.

     Common Stock Transactions - At various times in March 1999, the Company
sold in a private placement, an aggregate of 514,215 shares of its $.01 par
value Common stock and 565,629 detachable five-year non-redeemable warrants.
Each Warrant is exercisable for one share of Common stock at an exercise price
equal to the per share Common stock purchase price. The Common stock purchase
price, which was based on the average closing bid price for the five business
days immediately prior to the respective closing dates, ranged from $4.48 per
share to $5.06 per share. The Company received net proceeds of approximately
$2,175,000, which is being used for working capital and research and development
programs.

     In connection with the private placement, the Company paid compensation to
third parties consisting of an aggregate of $222,370 in cash and agreed to issue
five-year warrants to purchase an aggregate of 114,073 shares of Common stock at
not less than the exercise prices of the warrants sold in the private placement.

     In February 1999, the Company sold in a private placement 651,750 shares of
its $.01 par value Common stock, at $4.00 per share and 651,750 detachable
five-year non-redeemable warrants. Each Warrant is exercisable for one share of
Common stock at an exercise price of $4.70. The Company received net proceeds of
approximately $2,350,000, which is being used for working capital and research
and development programs.

     In connection with the private placement, the Company paid compensation to
third parties consisting of an aggregate of $248,130 in cash and agreed to issue
five-year warrants to purchase an aggregate of 194,600 shares of Common stock at
$4.70.

     On December 31, 1998, the Company sold in a private placement 287,500
shares of its $.01 par value Common stock, at $4.00 per share and 287,500
detachable five-year non-redeemable warrants. Each Warrant is exercisable for
one share of Common stock at an exercise price of $4.375 per share. The Company
received net proceeds of approximately $1,000,000, which was used for working
capital and research and development programs.

     In connection with the private placement, the Company paid compensation to
third parties consisting of an aggregate of $92,000 in cash and agreed to issue
five-year warrants to purchase an aggregate of 60,000 shares of Common stock at
prices ranging from $3.75 to $4.375.

                                      F-18

<PAGE>

     On July 8, 1998, the Company sold TheraTech 363,636 shares of Common stock
at a sale price of $5.50 per share or $2,000,000. The net proceeds of the
offering, approximately $1,964,000, were used for research and development of
the dosage form of PT-14, the Company's peptide hormone product for the
treatment of male erectile dysfunction.

     In the fiscal year ended June 30, 1999, the Company issued 25,000 shares of
Common Stock in exchange for services and recorded compensation expense for the
fair market value of $5.094 per share.

     In the fiscal year ended June 30, 1998, the Company issued 10,000 shares of
Common Stock in exchange for services and recorded compensation expense for the
fair market value of $7.75 per share.

     On March 4, 1996, the Company initiated the Common Stock Offering of units
at $100,000 per unit, with each unit consisting of 18,433 shares of Common Stock
at a purchase price of $5.44 per share. The Common Stock Offering was terminated
on June 24, 1996, with 96.454 units having been sold, realizing net proceeds of
approximately $8,391,000, and resulting in the issuance of 1,777,961 shares of
Common Stock.

     On June 24, 1996, and pursuant to the Merger, certain stockholders of
Interfilm, Inc. prior to the Merger and third parties purchased 138,249 shares
of Common Stock at a purchase price of $5.44 per share, with net proceeds of
approximately $748,000. In addition, and pursuant to the Merger, warrants to
purchase 69,124 shares of Common Stock at an exercise price of $8.68 were issued
to certain stockholders of Interfilm prior to the Merger and third parties.
These warrants are exercisable at any time, terminate four years from the date
of issuance, have certain registration rights, contain a call provision and are
subject to adjustment in certain circumstances.

     In the ten months ended June 30, 1996, the Company issued 31,492 shares of
Common Stock in exchange for services and recorded compensation expense for the
fair market value of the shares.

     The Company commenced a private offering of preferred stock in fiscal 1994,
and a private offering of units consisting of common stock and common stock
warrants in fiscal 1995, both of which were terminated without having raised the
minimum required for closing. Stock issuance costs incurred in connection with
both offerings were expensed to operations in the fiscal year in which such
costs were incurred.

     In February 1993, the Company sold 26,912 shares of Common Stock for net
proceeds of approximately $577,000.

     In September 1992, the Company sold 12,288 shares of Common Stock for net
proceeds of approximately $191,000.

     In December 1991, the Company issued a private offering memorandum for the
sale of units consisting of 1,211 shares of Common Stock and a $20,000 note (see
Note 8). Four units were sold for $25,000 per unit.

     All pre-Merger common stock issuances were for RhoMed common stock,
subsequently converted into the Company's Common Stock as a result of the
Merger, and were at issuance prices representing market value of the RhoMed
common stock on the date of issuance.

     Outstanding Stock Purchase Warrants -- At June 30, 1999, the Company had
the following warrants outstanding.

                                      F-19

<PAGE>

<TABLE>
<CAPTION>
    -------------------------------------- --------------------- ---------------------- -------------------------
                                                  Common            Exercise Price               Latest
             Warrant                           Stock Shares            per Share            Termination Date
    -------------------------------------- --------------------- ---------------------- -------------------------
<S>                                                      <C>                <C>                          <C>  <C>
    Class A Offering                                     65,668             $      .22                   9/13/05
    -------------------------------------- --------------------- ---------------------- -------------------------
    Class A Placement Agent                              20,737                    .22                   9/13/05
    -------------------------------------- --------------------- ---------------------- -------------------------
    Class B Offering                                     30,776                   2.64                   2/15/06
    -------------------------------------- --------------------- ---------------------- -------------------------
    Class B Placement Agent                               2,336                   5.43                   2/15/06
    -------------------------------------- --------------------- ---------------------- -------------------------
    Common Stock Offering
        Placement Agent                                 212,324                   5.43                   6/25/06
    -------------------------------------- --------------------- ---------------------- -------------------------
    Merger Warrants                                      69,124                   8.68                   6/24/00
    -------------------------------------- --------------------- ---------------------- -------------------------
    Series A Preferred Offering
        Placement Agent                                 286,096                   4.67                   11/9/02
    -------------------------------------- --------------------- ---------------------- -------------------------
    Palatin Offering #1                                 939,250           4.375 - 4.70                  12/31/03
    -------------------------------------- --------------------- ---------------------- -------------------------
    Offering #1 Placement Agent                         254,600            3.75 - 4.70                  12/31/03
    -------------------------------------- --------------------- ---------------------- -------------------------
    Palatin Offering #2                                 565,629            4.48 - 5.06                    3/9/04
    -------------------------------------- --------------------- ---------------------- -------------------------
     Offering #2 Placement Agent                        114,073            4.48 - 5.57                    3/9/04
    -------------------------------------- --------------------- ---------------------- -------------------------
    Other Warrants                                       18,927          6.45 - 282.00                    5/9/02
    -------------------------------------- --------------------- ---------------------- -------------------------
      Total                                           2,579,538         $.22 - $282.00                   6/25/06
                                                      =========         ==============                   =======
</TABLE>

     The Class B Offering and Merger Warrants contain provisions providing for
termination of the warrant if not exercised following notice of specified per
share trading prices.

                                      F-20

<PAGE>

     Stock Option Plans -- The Company has one stock option plan, approved by
the Company's stockholders, currently in effect under which future grants may be
issued, the 1996 Stock Option Plan, as amended, for which 2,500,000 shares of
Common Stock are reserved. The Company has also granted options under agreements
with individuals, and not under any plan. On March 24, 1998 the Company's
stockholders approved options to two executive officers to purchase a total of
148,392 shares of Common Stock at an exercise price of $1.00 per share, which
options replaced previously granted options to purchase the same number of
shares at an exercise price of $5.42 per share.

     Prior to the Merger, the Company had adopted a 1993 Equity Incentive Plan,
pursuant to which options for 750 Common Stock shares, giving effect to the
Merger and Amendment, were granted and outstanding at June 30, 1999. No new
shares can be issued under this Plan.

     Pursuant to the Merger, options which had been granted under RhoMed's four
stock option plans constituted RhoMed Securities which were automatically
converted into rights upon exercise to receive Common Stock in the same manner
in which the shares of RhoMed common stock were converted.

     In October 1995, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standards No. 123 ("SFAS 123"), "Accounting for
Stock-Based Compensation." Effective July 1, 1996, the Company has elected to
adopt the disclosures of this pronouncement. Had compensation cost for the
Company's stock option plans been determined based upon the fair value at the
grant date for awards under SFAS 123, the Company's net loss and basic and
diluted net loss attributable to common stockholders per share for the year
ended June 30, 1999 would have been $12,883,151 and $2.17 respectively. Net loss
and basic and diluted net loss attributable to common stockholders per share for
the year ended June 30, 1998 would have been $9,533,412 and $3.04, respectively,
while net loss and basic and diluted net loss attributable to common
stockholders per share for the year ended June 30, 1997 would have been
$5,695,856 and $2.94, respectively. Because the SFAS 123 method of accounting
has not been applied to options granted prior to September 1, 1995, the
resulting pro forma compensation cost, and thus pro forma net loss, may not be
representative of that to be expected in future years. The weighted average fair
market value at the date of grant for options granted during 1999, 1998 and 1997
is estimated as $1.29, $2.55 and $2.98 per share, respectively, using the
Black-Scholes option-pricing model. The assumptions used in the Black-Scholes
model are as follows: dividend yield of 0%, expected volatility of 60%, weighted
average risk-free interest rate of 4.66% in 1999, 5.83% in 1998 and 6.60% in
1997, and an expected option life of 7 years.

     The status of the plans and individual agreements, including predecessor
and replacement plans under which options remain outstanding, giving effect to
the Merger and the Amendment, during the four years ended June 30, 1999, was as
follows:

                                      F-21

<PAGE>

<TABLE>
<CAPTION>

                                                      Number of shares        Range of prices      Weighted average
                                                     subject to options          per share         Prices per share
<S>                                                    <C>                   <C>                       <C>
           Outstanding at August 31, 1995                 94,444             $6.51 - $360.00            $12.48
              Granted                                    429,463                $.22 - $5.42
              Expired or canceled                        (11,554)             $5.42 - $21.70
              Exercised                                      0                             -

           Outstanding at June 30, 1996                  512,353              $.22 - $360.00            $10.09
              Granted                                    448,552                $.20 - $8.00
              Expired or canceled                        (74,865)                      $5.42
              Exercised                                  (47,918)                       $.20
                                                        --------          ------------------
           Outstanding at June 30, 1997                  838,122              $.20 - $360.00             $8.02
              Granted                                    519,321                $.20 - $7.75
              Expired or canceled                       (201,582)             $ .20 - $10.85
              Exercised                                   (5,944)                       $.22

           Outstanding at June 30, 1998                1,149,917              $.20 - $360.00            $ 6.92
                                                                                                        ======
              Granted                                    940,088              $2.50 - $5.813
              Expired or canceled                        (41,697)               $.22 - $6.50
              Exercised                                  (70,257)                       $.22
           Outstanding at June 30, 1999                1,978,051              $.20 - $360.00            $ 4.26
                                                       =========              ==============            ======
           Exercisable at June 30, 1999                1,364,656              $.20 - $360.00            $ 4.87
                                                       =========              ==============            ======
</TABLE>


(11) GRANTS AND CONTRACTS:

     The Company applies for and has received grants and contracts under the
Small Business Innovative Research ("SBIR") program and other federally funded
grant and contract programs. Since inception, approximately $2,970,117 of the
Company's revenues have been derived from federally or state funded grants and
contracts. Under federal grants and contracts, there are no royalties or other
forms of repayment; however, in certain limited circumstances the government can
acquire rights to technology which is not being commercially exploited.



(12) LICENSING FEES AND ROYALTIES:

     In December 1996, the Company entered into an Option Agreement with Nihon
Medi-Physics ("Nihon"), pursuant to which the Company received, in January 1997,
an initial payment of $1,000,000 before Japanese withholding taxes of $100,000
(the "Initial Payment"). The Company has accounted for the Initial Payment by
recognizing license fee revenue of $350,000, which represents the non-refundable
portion of the Initial Payment, and deferred license fee revenue of $550,000.

     The Company recognized $550,000 in license fees as revenue during the
quarter ended December 31, 1998 related to its license option agreement with
("Nihon"). This

                                      F-22

<PAGE>

$550,000 was recognized pursuant to a determination by both Nihon and the
Company to change the development emphasis and termination of the original
agreement. The Company is not required to perform any future services under this
agreement.

     In May 1997, the Company entered into a License Agreement with The Wistar
Institute of Anatomy and Biology ("Wistar") related to the antibody and cell
line used for LeuTech for a defined field of use. The agreement includes future
payments to Wistar based on milestones. The Company paid $50,000 in license fees
during the year ended June 30, 1999, such fee was accounted for as an expense in
the statement of operations during the year ended June 30, 1999.

     On March 18, 1998, the Company entered into a License and Development
Agreement with TheraTech, Inc. ("TheraTech") pursuant to which the Company paid,
in July 1998, $500,000 to TheraTech as a license fee. Such license fee was
accounted for as an expense in the statement of operations during the year ended
June 30, 1998. The development agreement includes additional payments to
TheraTech related to the joint effort under the product development program.

     On March 31, 1998, the Company entered into a License Agreement with
Competitive Technologies, Inc. ("CTI") pursuant to which the Company paid, in
July 1998, $50,000 to CTI as a license fee. Such license fee was accounted for
as an expense in the statement of operations during the year ended June 30,
1998. The agreement includes future payments to CTI in subsequent years based on
certain factors. The Company paid $50,000 in license fees during the year ended
June 30, 1999, such fee was accounted for as an expense in the statement of
operations during the year ended June 30, 1999.



(13) INCOME TAXES:

     The Company has had no income tax expense or benefit since inception
because of operating losses. Deferred tax assets and liabilities are determined
based on the estimated future tax effect of differences between the financial
statements and tax reporting basis of assets and liabilities, given the
provisions of the tax laws. A valuation allowance for the net deferred tax
assets has been recorded at June 30, 1999, based on the weight of evidence that
the deferred tax assets exceed the likely reversal of deferred tax liabilities
and likely taxable income.

     The Tax Reform Act of 1986 imposes limitations on the use of net operating
loss carryforwards if certain stock ownership changes occur. As a result of the
change in majority ownership relating to the Castle preferred stock transaction,
the Common Stock Offering, the Merger, and the Series A Preferred Stock
Offering, the Company most likely will not be able to fully realize the benefit
of its net operating loss carryforwards.


(14) SUBSEQUENT EVENTS:

     As of August 17, 1999, Palatin entered into a strategic collaboration
agreement with Mallinckrodt, Inc., a large international healthcare products
company, to jointly

                                      F-23

<PAGE>

develop, manufacture, market and sell LeuTech. Under the terms of the agreement,
Mallinckrodt:

     1.   received an exclusive worldwide license (excluding Europe) for sales,
          marketing and distribution of LeuTech and paid a licensing fee of
          $500,000;

     2.   agreed to make milestone payments totaling $10,000,000 upon FDA
          approval of the first LeuTech indication and upon the attainment of
          certain sales goals following product launch;

     3.   agreed to reimburse Palatin for 50% of all ongoing LeuTech development
          costs, subject to a cap, which can be amended;

     4.   agreed to pay to Palatin a transfer price for each LeuTech product
          unit delivered to Mallinckrodt and a quarterly royalty on
          Mallinckrodt's future net sales of LeuTech;

     5.   purchased 700,000 restricted shares of Palatin's non-voting Series C
          convertible preferred stock for $13,000,000;

     6.   agreed that the Series C convertible preferred stock purchased by them
          would be convertible after five years, or earlier upon the occurrence
          of a change in control in Palatin (as defined in the agreement), into
          700,000 shares of Palatin's common stock with certain registration
          rights and anti-dilution rights;

     7.   agreed to the oversight of LeuTech development and marketing
          activities by a joint steering committee, comprised of equal numbers
          of representatives to be appointed by each of Palatin and
          Mallinckrodt;

     8.   agreed to the potential termination of the agreement by either party
          in the event of material breach or nonpayment by the other party and
          the expiration of the agreement after the commercial sale of LeuTech
          ceases;

     9.   agreed that if the agreement was validly terminated by Palatin before
          its expiration due to a material breach or nonpayment by Mallinckrodt,
          then, among other things, all licenses granted to Mallinckrodt will be
          terminated, Mallinckrodt will assign to Palatin any interest they may
          have in any trademarks used to market LeuTech as well as any
          regulatory filings they may have made in connection with LeuTech and
          Mallinckrodt will continue to pay Palatin royalty on the sale of any
          inventory they may have the right to dispose of; and

     10.  agreed that if the agreement was validly terminated by Mallinckrodt
          before its expiration due to a material breach or nonpayment by
          Palatin, then, among other things, all licenses granted to
          Mallinckrodt under the terms of the agreement will be considered
          exclusive and irrevocable, Palatin shall transfer to Mallinckrodt all
          contractual and intellectual property rights necessary for the
          production of LeuTech in quantities sufficient to meet Mallinckrodt's
          needs, and Mallinckrodt shall continue to pay Palatin royalty on all
          sales of LeuTech.

                                      F-24

<PAGE>


                                  EXHIBIT INDEX

Exhibits filed with this report.

EXHIBIT NO.                DESCRIPTION
- -----------                -----------

3.7            Certificate of Designations of Series C Preferred Stock, as filed
               with the Delaware Secretary of State on August 17, 1999.

4.4            Specimen certificate for Series C Convertible Preferred Stock.

10.2           1996 Stock Option Plan, as amended effective July 1, 1999.

10.9           Employment Agreement dated July 9, 1999 between Palatin
               Technologies, Inc. and Edward J. Quilty.

10.21          Strategic Collaboration Agreement dated as of August 17, 1999,
               between Palatin and Mallinckrodt, Inc.

21             Subsidiaries.

23             Consent of Arthur Andersen LLP.

27             Financial Data Schedule.





                  CERTIFICATE OF DESIGNATIONS
                               of
              SERIES C CONVERTIBLE PREFERRED STOCK
                               of
                   PALATIN TECHNOLOGIES, INC.

                 Pursuant to Section 151 of the
        General Corporation Law of the State of Delaware

PALATIN TECHNOLOGIES,  INC., a corporation organized and existing under the laws
of the State of Delaware (the "Corporation"), does hereby certify that, pursuant
to the authority  conferred on the Board of Directors of the  Corporation by the
certificate  of   incorporation,   as  amended  to  date  (the  "Certificate  of
Incorporation"),  of the  Corporation  and in accordance with Section 151 of the
General Corporation Law of the State of Delaware,  the Board of Directors of the
Corporation adopted the following resolution  establishing a series of 1,400,000
shares of Preferred Stock of the Corporation designated as "Series C Convertible
Preferred Stock":

     RESOLVED,  that  pursuant  to  the  authority  conferred  on the  Board  of
     Directors of this Corporation by the Certificate of Incorporation, a series
     of Preferred  Stock, par value $.01 per share, of the Corporation is hereby
     established  and  created,  and that the  designation  and number of shares
     thereof  and  the  voting  and  other  powers,  preferences  and  relative,
     participating,  optional  or other  rights of the shares of such series and
     the qualifications, limitations and restrictions thereof are as follows:

              Series C Convertible Preferred Stock

     Section 1. Designation, Amount and Par Value. The series of preferred stock
shall be  designated  as Series C Convertible  Preferred  Stock (the  "Preferred
Stock") and the number of shares so designated shall be 1,400,000. Each share of
Preferred Stock shall have a par value of $.01 per share and shall have a stated
value of $18.57 per share (the "Stated Value").

     Section 2. Dividends and Certain Distributions.

     (a) The holders (the "Holders" and, individually,  a "Holder") of Preferred
Stock shall not be  entitled  to receive  periodic  dividends  on the  Preferred
Stock.

     (b) So long as any Preferred  Stock shall remain  outstanding,  neither the
Corporation  nor any  subsidiary  thereof shall  directly or  indirectly  pay or
declare  any  dividend  or make  any  distribution  (other  than a  dividend  or
distribution described in Section 5) upon, nor shall any distribution be made in
respect of, any Junior Securities (as defined in Section 6).

     Section  3.  Voting  Rights.  Except  as  otherwise  required  by law,  the
Preferred Stock shall have no voting rights.

<PAGE>

     Section 4. Liquidation. Upon any liquidation,  dissolution or winding-up of
the Corporation, whether voluntary or involuntary (a "Liquidation"),  the Holder
shall be entitled to receive out of the assets of the Corporation,  whether such
assets are  capital or surplus,  for each share of  Preferred  Stock,  an amount
equal to the Stated Value before any  distribution  or payment  shall be made to
the Holders of any Junior Securities, and if the assets of the Corporation shall
be  insufficient  to pay in full  such  amounts,  then the  entire  assets to be
distributed  to the Holder of the Preferred  Stock shall be  distributed to such
Holder of the Preferred Stock ratably in accordance with the respective  amounts
that would be payable on such shares if all amounts payable thereon were paid in
full. Any Change in Control shall not be deemed to be a  Liquidation,  except to
the  extent it is a Change of Control  within  the  meaning of clause (e) of the
definition of Change of Control set forth in Section 6.

     Section 5. Conversion.

     (a) On or after August 15,  2004,  or upon a Change in Control with respect
to the  Corporation,  and in either such case  effective  upon  written  notice,
described below, by the Holder to the  Corporation,  the Holder may convert some
or all of the shares of Preferred Stock, including any shares of Preferred Stock
obtained  by  the  Holder   pursuant  to  Section  5(c),  into  fully  paid  and
nonassessable  shares of the Common  Stock on a  one-share-for-one-share  basis,
without  payment of funds or other  consideration  of any kind. The Holder shall
effect  conversions  by  surrendering  to the  Corporation  the  certificate  or
certificates  representing  the  shares  of  Preferred  Stock  to be  converted,
together  with a  completed  and duly  executed  conversion  notice  in the form
attached hereto as Exhibit A (a "Conversion  Notice").  Each  Conversion  Notice
shall  specify the number of shares of Preferred  Stock to be converted  and the
date on which such conversion is to be effected,  which date may not be prior to
the  date the  Holder  delivers  such  Conversion  Notice  by  facsimile  to the
Corporation  (the  "Conversion  Date").  If no Conversion Date is specified in a
Conversion  Notice,  the  Conversion  Date shall be the date that the Conversion
Notice is deemed  delivered  pursuant to Section  5(f).  Subject to Section 5(b)
hereof, each Conversion Notice, once given, shall be irrevocable. If a Holder is
converting  less than all the shares of the Preferred  Stock  represented by the
certificate  or  certificates  tendered  by  such  Holder,  or  if a  conversion
hereunder  cannot be  effected  in full for any reason,  the  Corporation  shall
promptly  deliver to such Holder (in the manner and within the time set forth in
Section  5(b)) a  certificate  for  such  number  of  shares  as have  not  been
converted.

     (b) Not  later  than 10  Business  Days  after  any  Conversion  Date,  the
Corporation will use its best efforts to deliver to the Holder (i) a certificate
or certificates representing the number of shares of Common Stock being acquired
upon  the  conversion  of  shares  of  Preferred  Stock  and  (ii)  one or  more
certificates representing the number of shares of Preferred Stock surrendered to
the Company for  conversion  that were not requested to be converted;  provided,
however,  that the  Corporation  shall not be  obligated  to issue  certificates
evidencing the shares of Common Stock issuable upon  conversion of any shares of
Preferred Stock until certificates evidencing such shares of Preferred Stock are
either delivered for conversion to the Corporation or any transfer agent for the
Preferred  Stock or Common Stock, or the Holder of such Preferred Stock notifies
the Corporation that such  certificates  have been lost, stolen or destroyed and
provides a bond (or other adequate security)  satisfactory to the Corporation to
indemnify the Corporation from any loss that may be incurred by it in connection
therewith.

                                       2

<PAGE>

     (c) So long as the  Purchase  Agreement  is in effect  with  respect to any
portion of the Territory (as defined in the Purchase Agreement), in the event at
any time a Dilutive Event (as defined in Section 6) results in a decrease in the
percentage of outstanding  Common Stock then owned by the Holder  (assuming full
conversion of the  Preferred  Stock) (the "Holder  Ownership"),  then the Holder
shall have the right,  exercisable as provided below, (i) if, at the time of the
occurrence of the Dilutive Event,  the Preferred Stock is not then  convertible,
to receive that number of shares of Preferred Stock which,  when converted along
with all other shares of Preferred  Stock and combined  with all other shares of
Common Stock then owned by the Holder,  would be required to preserve the Holder
Ownership at the same percentage immediately before and after the Dilutive Event
or (ii) if, at the time of the occurrence of the Dilutive  Event,  the Preferred
Stock is then  convertible,  to receive  that  number of shares of Common  Stock
which,  when  combined with all other shares of Common Stock owned by the Holder
(including  Common  Stock  underlying  any  Preferred  Stock  then  owned by the
Holder),  would  be  required  to  preserve  the  Holder  Ownership  at the same
percentage  immediately before and after the Dilutive Event. The foregoing right
shall be  exercisable  by payment to the  Corporation  of the purchase price and
delivery to the Corporation of the Purchase Notice (defined below). The purchase
price per share of Preferred  Stock or Common  Stock,  as the case may be, to be
paid by the Holder upon  exercise of the  foregoing  right shall be equal to the
consideration  per  share  (if  any)  paid or to be paid by the  person  to whom
securities  are being  issued in  connection  with the  Dilutive  Event.  If the
consideration  paid by any such third  party for such  securities  is other than
cash, such  consideration  shall be presumed to be cash equal to the fair market
value of such  consideration as determined by an independent party acceptable to
both the Holder and the Corporation.  The cost of making such determination,  if
any, shall be borne by the  Corporation.  The Corporation  shall provide written
notice to the Holder of a Dilutive Event within five (5) days after the issuance
of any securities  giving rise to such Dilutive Event, and the Holder shall make
its  election  to  purchase  all or any  portion of the  securities  which it is
entitled  to  purchase  or  receive  in  accordance  herewith  to  preserve  its
percentage  interest in the Common  Stock by written  notice to the  Corporation
(the  "Purchase  Notice") no more than thirty (30) days following its receipt of
the  Corporation's  written  notice of such  Dilutive  Event.  Upon the Holder's
failure  timely to return the  Purchase  Notice to the  Corporation,  the Holder
shall be deemed to have waived its right to  purchase or receive any  additional
securities of the Corporation on such occasion.  Upon the Holder's timely return
to  the  Corporation  of  the  Purchase  Notice,  the  Holder  shall  pay to the
Corporation  the  purchase  price  (if any) for the  securities  it so elects to
purchase or receive within thirty (30) days subsequent to its notice of election
to purchase or receive additional  securities.  Any failure by the Holder on any
occasion  to  purchase  or  receive  all or some of the  securities  which it is
entitled to purchase or receive  pursuant to this Section 5(c) as a  consequence
of the  occurrence of a single  Dilutive Event shall not affect the right of the
Holder,  on the  subsequent  occurrence  of any  different  Dilutive  Event,  to
purchase  or  receive  all or any  portion  of the  securities  which it is then
entitled  to  purchase  or receive as a  consequence  of the  operation  of this
Section 5(c).

     (d) In determining the amount of consideration  paid to the Corporation for
the issuance of Common Stock upon the exercise or conversion of  exercisable  or
convertible securities, all amounts paid to the Corporation in consideration for
the issuance of the convertible or exercisable  securities  shall be included as
part of the consideration to be paid by the Holder pursuant to this Section.

                                       3

<PAGE>

     (e) The  provisions  of the  foregoing  Section  5(c)  shall not apply with
respect to the issuance of Common Stock in connection with, or upon the exercise
or  conversion  of  securities   issued  in  connection   with,   the  following
transactions:

          (i)  exercise  of rights or  options  granted  or which may be granted
     under a stock option or other plan for the benefit of employees,  directors
     and/or consultants;

          (ii) exercise of rights,  warrants or options  outstanding on the date
     hereof;

          (iii) conversion of any shares of outstanding  Preferred Stock, or any
     additional  shares of  Preferred  Stock  issued  pursuant  to Section  5(c)
     hereof;

          (iv) after such time as the Holder first  becomes  eligible to convert
     any of the Preferred Stock in accordance with Section 5(c) above,  upon the
     issuance and sale of any shares of Common Stock,  including the issuance of
     Common Stock upon exercise of convertible or exercisable  securities,  sold
     in a firm  commitment  underwritten  public  offering,  including,  without
     limitation,  shares  sold upon the  exercise  of any  overallotment  option
     granted to the underwriters in connection with such offering; and

          (v)  issuance  of  Common  Stock  pursuant  to  antidilution  or price
     protection  provisions contained in existing employment  agreements and the
     issuance of Common Stock pursuant to antidilution  provisions  described in
     the certificate of  designations  with respect the  Corporation's  Series A
     Convertible Preferred Stock.

     (f) Any notice or other  communication or delivery required or permitted to
be  provided  hereunder  shall be in  writing  and  shall be deemed to have been
received on the earliest of (i) the date of  transmission  or hand delivery,  if
such notice or  communication  is delivered  to the address or to the  facsimile
telephone  number of the  addressee  prior to 6:00  p.m.  (Eastern  Standard  or
Daylight  time) on a  Business  Day,  (ii) the  Business  Day  after the date of
transmission or hand delivery,  if such notice or  communication is delivered to
the address or to the facsimile  telephone  number of the  addressee  later than
6:00 p.m. (Eastern Standard or Daylight time) on any date and earlier than 11:59
p.m.  (Eastern  Standard or Daylight time) on such date,  (iii) the Business Day
following  the  date of  sending,  if sent by  nationally  recognized  overnight
courier service, or (iv) upon actual receipt by the party to whom such notice is
required to be given.

     Section 6. Definitions.  For the purposes hereof, the following terms shall
have the  following  meanings:

     "Business  Day"  means any day  except  Saturday,  Sunday and any day which
shall be in New York, New York a day on which banking institutions are closed.

     "Change in Control" means the occurrence,  with respect to the Corporation,
of any one of the following events:

          (a) any  "person"  as such term is defined  in Section  3(a)(9) of the
     Exchange Act (and as used in Sections 13(d)(3) and 14(d)(2) of the Exchange
     Act) is or becomes a

                                       4

<PAGE>

     "beneficial  owner"  (as  defined in Rule 13d-3  under the  Exchange  Act),
     directly or  indirectly,  of  securities  of the  Corporation  representing
     greater  than  fifty  percent  (50%) of the  combined  voting  power of the
     Corporation's then outstanding securities eligible to vote for the election
     of its board of directors;  provided,  however, that the event described in
     this  clause (a) shall not be deemed to be a change in control by virtue of
     any of the following  acquisitions:  (i) by the  Corporation  or any wholly
     owned  subsidiary  of the  Corporation,  (ii) by any employee  benefit plan
     sponsored  or  maintained  by  the  Corporation  or any  subsidiary  of the
     Corporation,  (iii)  by  any  underwriter  temporarily  holding  securities
     pursuant to an offering of such  securities,  or (iv) except as provided in
     subsection (c) below,  in which voting  securities of the  Corporation  are
     acquired from the Corporation, if a resolution providing expressly that the
     acquisition  pursuant to this clause (iv) does not  constitute  a change in
     control is approved by a vote of at least a majority of the  directors  who
     are directors of the Corporation on and as of the date hereof;

          (b)  individuals  who,  on the date  hereof,  constitute  the board of
     directors of the Corporation  cease for any reason to constitute at least a
     majority thereof,  provided that any person becoming a director  subsequent
     to the date hereof,  whose  election,  or nomination  for election,  by the
     Corporation's stockholders was approved by a vote of at least a majority of
     the  directors  comprising  the  current  board of  directors  (either by a
     specific vote or by approval of the proxy  statement of the  Corporation in
     which such person is named as a nominee for director,  without objection to
     such nomination) shall be, for purposes of this subsection (b),  considered
     as though  such person  were a member of the  current  board of  directors;
     provided,  however,  that no individual initially elected or nominated as a
     director of the Corporation as a result of an actual or threatened election
     contest  with  respect  to  directors  or any other  actual  or  threatened
     solicitation  of proxies or  consents  by or on behalf of any person  other
     than the board of  directors  shall be deemed to be a member of the current
     board of directors;

          (c) a  merger,  consolidation,  share  exchange  or  similar  form  of
     corporate  reorganization of the Corporation  requiring the approval of the
     Corporation's stockholders (whether for such transaction or the issuance of
     securities in the  transaction or  otherwise);  provided,  however,  that a
     "Change  in  Control"   shall  not  be  deemed  to  occur  upon  a  merger,
     consolidation,  share exchange or similar form of corporate  reorganization
     of the  Corporation,  whether or not stockholder  approval is required,  so
     long as (i) the board of  directors  of any entity  surviving  or resulting
     from such  reorganization  contains  at least  fifty  percent  (50%) of the
     directors  who were members of the board of  directors  of the  Corporation
     immediately  prior to such  reorganization  and (ii)  the  Chief  Executive
     Officer  of any such  surviving  entity  is the same  person  as the  Chief
     Executive   Officer   of  the   Corporation   immediately   prior  to  such
     reorganization;

          (d)  the  direct  or  indirect  sale  or  other  disposition  of  all,
     substantially  all or any  substantial  parts  of the  assets  or  lines of
     business  of  the  Corporation,   whether  or  not  approval  of  any  such
     transaction  by  stockholders  is  required;  provided,  however,  that the
     Corporation  shall be able to sell or otherwise  dispose of non-LeuTech (as
     defined  in the  Purchase  Agreement)  assets  or  lines of  business  in a
     transaction  not  otherwise  qualifying  as a  "Change  in  Control"  under
     subsections (a), (b) and (c) set forth  immediately  above,  whether or not
     approval of such transaction by stockholders is required,  and such sale or
     other disposition shall not constitute a "Change in Control"; or

                                       5

<PAGE>

          (e) the  stockholders  of the  Corporation  approve a plan of complete
     liquidation or dissolution of the Corporation.

     "Commission" means the Securities and Exchange Commission.

     "Common Stock" means the Corporation's voting common stock, $.01 par value.

     "Dilutive Event" shall mean (i) the issuance and sale by the Corporation of
any shares of Common Stock (including the issuance of Common Stock upon exercise
or conversion of securities exercisable for or convertible into Common Stock) or
(ii) the issuance by the Corporation of any Common Stock or other  securities in
connection with any stock split, stock dividend or other recapitalization.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     "Junior  Securities" means the Common Stock and all other equity securities
of the Corporation,  other than the Corporation's Series A Convertible Preferred
Stock  and  Series B  Convertible  Preferred  Stock  (which  are  senior  to the
Preferred Stock) or any other security that the Holder consents in writing to be
pari passu with the Preferred Stock.

     "Person" means a corporation, an association, a partnership,  organization,
a business,  an individual,  a government or political  subdivision thereof or a
governmental agency.

     "Purchase Agreement" means the Strategic Collaboration Agreement,  dated as
of the date  hereof,  among  the  Corporation  and the  original  Holder  of the
Preferred Stock.

     "Securities Act" means the Securities Act of 1933, as amended.

          [Remainder of page left blank intentionally]



                                       6

<PAGE>

IN WITNESS WHEREOF,  the Corporation has caused this certificate to be signed on
its behalf by Edward J. Quilty, its Chairman and Chief Executive  Officer,  this
17th day of August, 1999.

                              The Corporation:

                              PALATIN TECHNOLOGIES, INC.

                              By:   /s/ Edward J. Quilty
                                   ----------------------------------
                              Name:  Edward J. Quilty
                              Title: Chairman and Chief Executive Officer


<PAGE>


                            EXHIBIT A
                      NOTICE OF CONVERSION

(To be Executed by the Holder in order to
Convert shares of Preferred Stock)

The  undersigned  hereby  elects  to  convert  the  number of shares of Series C
Convertible Preferred Stock indicated below, into shares of voting Common Stock,
$.01 par  value  (the  "Common  Stock"),  of  Palatin  Technologies,  Inc.  (the
"Corporation")  according to the conditions of the Certificate of  Designations,
as of the date written below. If shares are to be issued in the name of a person
other than undersigned, the undersigned will pay all transfer taxes payable with
respect  thereto and is delivering  herewith such  certificates  and opinions as
reasonably requested by the Corporation in accordance therewith.  No fee will be
charged to the Holder for any  conversion,  except for such transfer  taxes,  if
any.

Conversion calculations:
                             ---------------------------------------------------
                             Date to Effect Conversion


                             ---------------------------------------------------
                             Number of shares of Preferred Stock to be Converted


                             ---------------------------------------------------
                             Number of shares of Common Stock to be Issued


                             ---------------------------------------------------
                             Signature


                             ---------------------------------------------------
                             Name


                             ---------------------------------------------------
                             Address




PREFERRED STOCK                                                  PREFERRED STOCK
- -----------------------        [GRAPHIC OMITTED]         -----------------------

  Certificate Number       PALATIN TECHNOLOGIES, INC.       Number of Shares
        C0000                                                   000,000
- -----------------------                                  -----------------------
              Incorporated Under the Laws of the State of Delaware


                 TRANSFER IS RESTRICTED - SEE LEGENDS ON REVERSE


                      SERIES C CONVERTIBLE PREFERRED STOCK
                                 $.01 PAR VALUE

THIS  CERTIFIES THAT [Name of Holder] is the record owner of [zero thousand zero
hundred] fully paid and non-assessable  shares of Series C Convertible Preferred
Stock of Palatin Technologies, Inc. transferable on the books of the Corporation
by the holder hereof in person or by Attorney upon surrender of this Certificate
properly endorsed.

WITNESS the seal of the  Corporation  and the signatures of its duly  authorized
officers.                                                 Dated ______ __, ____.



/s/ Edward J. Quilty
                               [GRAPHIC OMITTED]        ------------------------
      Chairman                                              Secretary


<PAGE>


- --------------------------------------------------------------------------------
THE SHARES OF STOCK  REPRESENTED BY THIS  CERTIFICATE  HAVE NOT BEEN  REGISTERED
UNDER THE U.S.  SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT") OR ANY
OTHER  APPLICABLE  SECURITIES LAWS, HAVE BEEN ISSUED IN RELIANCE UPON EXEMPTIONS
FROM THE  REGISTRATION  REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE  STATE
SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED
OF  EXCEPT  PURSUANT  TO (1)  AN  EFFECTIVE  REGISTRATION  STATEMENT  UNDER  THE
SECURITIES ACT, OR (2) AN OPINION OF COUNSEL,  SATISFACTORY TO THE  CORPORATION,
THAT AN EXEMPTION  FROM  REGISTRATION  UNDER THE  SECURITIES  ACT AND APPLICABLE
STATE SECURITIES LAWS IS AVAILABLE.
- --------------------------------------------------------------------------------
The Corporation  will furnish without charge to each stockholder who so requests
the powers, designations, preferences, and relative, participating, optional, or
other  special  rights  of  each  class  of  stock  or  series  thereof  and the
qualifications,  limitations or restrictions of such preferences  and/or rights.
- --------------------------------------------------------------------------------

FOR VALUE RECEIVED, (I/we) sell, assign and transfer to ________________________
___________________   shares  of  the  Series  C  Convertible   Preferred  Stock
represented by this Certificate,  and appoint  _____________________________  to
transfer  the said Stock on the books of Palatin  Technologies,  Inc.  with full
power of substitution in the premises.
                                                  ------------------------------
                                                  Social Security Number or
                                                  Employer Identification Number
                                                  of transferee, if known:

Signed________________ Dated ____________

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


Signed________________ Dated ____________

                                    NOTICE: THE SIGNATURE(S) ON THIS ASSIGNMENT
                                   MUST CORRESPOND WITH THE NAME(S) WRITTEN UPON
                                       THE FACE OF THE CERTIFICATE, IN EVERY
                                         PARTICULAR, WITHOUT ALTERATION OR
                                        ENLARGEMENT, OR ANY CHANGE WHATEVER.

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



                           PALATIN TECHNOLOGIES, INC.

                             1996 STOCK OPTION PLAN

1.   Purpose.

     The purposes of the 1996 Stock Option Plan (the "Plan") are to induce
certain employees, consultants and directors to remain in the employ or service,
or to continue to serve as directors, of Palatin Technologies, Inc. (the
"Company") and its present and future subsidiary corporations (each a
"Subsidiary"), as defined in Section 424(f) of the Internal Revenue Code of
1986, as amended (the "Code"), to attract new individuals to enter into such
employment or service and to encourage such individuals to secure or increase on
reasonable terms their stock ownership in the Company. The Board of Directors of
the Company (the "Board") believes that the granting of stock options (the
"Options") under the Plan will promote continuity of management and increased
incentive and personal interest in the welfare of the Company by those who are
or may become primarily responsible for shaping and carrying out the long range
plans of the Company and securing its continued growth and financial success.
Options granted hereunder are intended to be either (a) "incentive stock
options" (which term, when used herein, shall have the meaning ascribed thereto
by the provisions of Section 422(b) of the Code) or (b) options which are not
incentive stock options ("non-incentive stock options") or (c) a combination
thereof, as determined by the Committee (the "Committee") referred to in Section
4 hereof at the time of the grant thereof.



2.   Effective Date of the Plan.

     The Plan became effective on August 28, 1996, by action of the Board,
subject to ratification by stockholders of the Company.



3.   Stock Subject to Plan.

     2,500,000 of the authorized but unissued shares of the Common Stock, $0.01
par value, of the Company (the "Common Stock") are hereby reserved for issue
upon the exercise of Options granted under the Plan; provided, however, that the
number of shares so reserved may from time to time be reduced to the extent that
a corresponding number of issued and outstanding shares of the Common Stock are
purchased by the Company and set aside for issue upon the exercise of Options.
If any Options expire or terminate for any reason without having been exercised
in full, the unpurchased shares subject thereto shall again be available for the
purposes of the Plan.

                                     Page 1

<PAGE>

4.   Committee.

     The Committee shall consist of two or more members of the Board both or all
of whom shall be "non-employee directors" within the meaning of Rule
16b-3(b)(3)(i) promulgated under the Securities Exchange Act of 1934, as amended
(the "Exchange Act") and "outside directors" within the contemplation of Section
162(m)(4)(C)(i) of the Code. The President of the Company shall also be a member
of the Committee, ex-officio, whether or not he or she is otherwise eligible to
be a member of the Committee. The Committee shall be appointed annually by the
Board, which may at any time and from time to time remove any members of the
Committee, with or without cause, appoint additional members to the Committee
and fill vacancies, however caused, in the Committee. In the event that no
Committee shall have been appointed, the Board shall serve as the Committee. A
majority of the members of the Committee shall constitute a quorum. All
determinations of the Committee shall be made by a majority of its members
present at a meeting duly called and held. Any decision or determination of the
Committee reduced to writing and signed by all of the members of the Committee
shall be fully as effective as if it had been made at a meeting duly called and
held.



5.   Administration.

     Subject to the express provisions of the Plan, the Committee shall have
complete authority, in its discretion, to interpret the Plan, to prescribe,
amend and rescind rules and regulations relating to it, to determine the terms
and provisions of the respective option agreements or certificates (which need
not be identical), to determine the individuals (each a "Participant") to whom
and the times and the prices at which Options shall be granted, the periods
during which each Option shall be exercisable, the number of shares of the
Common Stock to be subject to each Option and whether such Option shall be an
incentive stock option or a non-incentive stock option and to make all other
determinations necessary or advisable for the administration of the Plan. In
making such determinations, the Committee may take into account the nature of
the services rendered by the respective employees and consultants, their present
and potential contributions to the success of the Company and the Subsidiaries
and such other factors as the Committee in its discretion shall deem relevant.
The Committee's determination on the matters referred to in this Section 5 shall
be conclusive. Any dispute or disagreement which may arise under or as a result
of or with respect to any Option shall be determined by the Committee, in its
sole discretion, and any interpretations by the Committee of the terms of any
Option shall be final, binding and conclusive. The Board may, at any time,
exercise any of the powers of the Committee.



6.   Eligibility.

     A. An Option may be granted only to (i) an employee or consultant of the
Company or a Subsidiary, (ii) a director of the Company who is not employed by
the Company or any of the Subsidiaries (a "Non-Employee Director") and (iii)
employees of a corporation or other business enterprise which has been acquired
by the Company or a Subsidiary, whether by exchange or

                                     Page 2

<PAGE>

purchase of stock, purchase of assets, merger or reverse merger or otherwise,
who hold options with respect to the stock of such corporation which the Company
has agreed to assume or for which the Company has agreed to provide substitute
options.

     B. (i) On August 28, 1996, each Non-Employee Director shall be granted an
Option (a "Non-Employee Director's Formula Option") to purchase 20,000 shares of
the Common Stock at the initial per share option price of $1.36 per share.

     (ii) At the first meeting of the Board immediately following the annual
meeting of the Stockholders of the Company held following the effective date of
the Plan, and at the first meeting of the Board immediately following each
subsequent annual meeting of the Stockholders of the Company, each Non-Employee
Director shall be granted an Option (a "Non-Employee Director's Formula Option")
to purchase 10,000 shares (after giving effect to the reverse stock split
effected on September 5, 1997) of the Common Stock at the initial per share
option price equal to the fair market value of a share of the Common Stock on
the date of grant.

     (iii) Each Non-Employee Director who becomes a director subsequent to the
adoption date of the Plan shall be granted, as of a date determined by the
Board, which date shall be not earlier than the date he or she agrees to become
a director and not later than the date he or she becomes a director, an Option
(a "Non-Employee Director's Initial Option") to purchase the number of shares
(after giving effect to the reverse stock split effected on September 5, 1997)
of the Common Stock determined by the Board, but not more than 10,000 shares, at
the initial per share option price equal to the fair market value of a share of
the Common Stock on the date of grant.

     (iv) A Non-Employee Director may not exercise a Non-Employee Director's
Formula Option during the period commencing on the date of the granting of such
Option to him or her and ending on the day next preceding the first anniversary
of such date. A Non-Employee Director may (i) during the period commencing on
the first anniversary of the date of the granting of a Non-Employee Director's
Formula Option to him or her and ending on the day next preceding the second
anniversary of such date, exercise such Option with respect to one-fourth of the
shares granted thereby, (ii) during the period commencing on such second
anniversary and ending on the day next preceding the third anniversary of the
date of the granting of such Option, exercise such Option with respect to
one-half of the shares granted thereby, (iii) during the period commencing on
such third anniversary and ending on the date next preceding the fourth
anniversary of the date of the granting of such Option, exercise such Option
with respect to three-fourths of the shares granted thereby and (iv) during the
period commencing on such fourth anniversary and ending on the date of the
expiration of such Option, exercise such Option with respect to all of the
shares granted thereby.


7.   Option Prices.

     A. Except as otherwise provided in Sections 6 and 17, the initial per share
option price of any Option shall be the price determined by the Committee, but
not less than the fair market value of a share of the Common Stock on the date
of grant; provided, however, that, in the case of a Participant who owns (within
the meaning of Section 424(d) of the Code) more than 10% of

                                     Page 3

<PAGE>

the total combined voting power of the Common Stock at the time an Option which
is an incentive stock option is granted to him or her, the initial per share
option price shall not be less than 110% of the fair market value of a share of
the Common Stock on the date of grant.

     B. For all purposes of the Plan, the fair market value of a share of the
Common Stock on any date shall be determined by the Committee as follows:

          (i) If the Common Stock is listed on the OTC Electronic Bulletin
     Board, its fair market value shall be the closing selling price on such
     date for the Common Stock as reported on the OTC Electronic Bulletin Board.
     If there are no sales of the Common Stock on that date, then the reported
     closing selling price for the Common Stock on the next preceding date for
     which such closing selling price is quoted shall be determinative of fair
     market value; or,

          (ii) If the Common Stock is listed on any established stock exchange
     or a national market system, including without limitation, the Nasdaq
     National Market System or the Nasdaq SmallCap Market System, its fair
     market value shall be the reported closing selling price for the Common
     Stock on the principal securities exchange or national market system on
     which the Common Stock is at such date listed for trading. If there are no
     sales of Common Stock on that date, then the reported closing selling price
     for the Common Stock on the next preceding day for which such closing
     selling price is quoted shall be determinative of fair market value; or,

          (iii) If the Common Stock is not traded on the OTC Electronic Bulletin
     Board, an exchange, or a national market system, its fair market value
     shall be determined in good faith by the Committee, and such determination
     shall be conclusive and binding on all persons.



8.   Option Term.

     Participants shall be granted Options for such term as the Committee shall
determine, not in excess of ten years from the date of the granting thereof;
provided, however, that, except as otherwise provided in Section 17, in the case
of a Participant who owns (within the meaning of Section 424(d) of the Code)
more than 10% of the total combined voting power of the Common Stock of the
Company at the time an Option which is an incentive stock option is granted to
him or her, the term with respect to such Option shall not be in excess of five
years from the date of the granting thereof; provided, further, however, that
the term of each Non-Employee Director's Formula Option shall be ten years from
the date of the granting thereof.



9.   Limitations on Amount of Options Granted.

     A. Except as otherwise provided in Section 17, the aggregate fair market
value of the shares of the Common Stock for which any Participant may be granted
incentive stock options which are exercisable for the first time in any calendar
year (whether under the terms of the Plan or any other stock option plan of the
Company) shall not exceed $100,000.

                                     Page 4

<PAGE>

     B. Except as otherwise provided in Section 17, no Participant shall, during
any fiscal year of the Company, be granted Options to purchase more than 500,000
shares of the Common Stock.



10.  Exercise of Options.

     A. Except as otherwise provided in Section 17 and except as otherwise
determined by the Committee at the time of the grant of an Option other than a
Non-Employee Director's Formula Option, a Participant may not exercise an Option
during the period commencing on the date of the granting of such Option to him
or her and ending on the day next preceding the first anniversary of such date.
Except as otherwise set forth in Sections 9A and 17 and in the preceding
sentence, a Participant may (i) during the period commencing on the first
anniversary of the date of the granting of an Option to him or her and ending on
the day next preceding the second anniversary of such date, exercise such Option
with respect to one-fourth of the shares granted thereby, (ii) during the period
commencing on such second anniversary and ending on the day next preceding the
third anniversary of the date of the granting of such Option, exercise such
Option with respect to one-half of the shares granted thereby, (iii) during the
period commencing on such third anniversary and ending on the date next
preceding the fourth anniversary of the date of the granting of such Option,
exercise such Option with respect to three-fourths of the shares granted thereby
and (iv) during the period commencing on such fourth anniversary and ending on
the date of the expiration of such Option, exercise such Option with respect to
all of the shares granted thereby.

     B. Except as hereinbefore otherwise set forth, an Option may be exercised
either in whole at any time or in part from time to time.

     C. An Option may be exercised only by a written notice of intent to
exercise such Option with respect to a specific number of shares of the Common
Stock and payment to the Company of the amount of the option price for the
number of shares of the Common Stock so specified.

     D. Except in the case of a Non-Employee Director's Formula Option, the
Board may, in its discretion, permit any Option to be exercised, in whole or in
part, prior to the time when it would otherwise be exercisable.

     E. Notwithstanding any other provision of the Plan to the contrary,
including, but not limited to, the provisions of Section 10D, if any Participant
shall have effected a "Hardship Withdrawal" from a "401(k) Plan" maintained by
the Company and/or one or more of the Subsidiaries, then, during the period of
one year commencing on the date of such Hardship Withdrawal, such Participant
may not exercise any Option. For the purpose of this paragraph E, a Hardship
Withdrawal shall mean a distribution to a Participant provided for in Reg. ss.
1.401(k)-1(d)(1)(ii) promulgated under Section 401(k)(2)(B)(i)(iv) of the Code
and a 401(k) Plan shall mean a plan which is a "qualified plan" within the
contemplation of section 401(a) of the Code which contains a "qualified cash or
deferred arrangement" within the contemplation of section 401(k)(2) of the Code.

                                     Page 5

<PAGE>

11.  Transferability.

     No Option shall be assignable or transferable except by will and/or by the
laws of descent and distribution and, during the life of any Participant, each
Option granted to him or her may be exercised only by him or her.



12.  Termination of Employment.

     A. Unless otherwise provided by the Committee, in the event a Participant
leaves the employ of the Company and the Subsidiaries or ceases to serve as a
consultant to the Company and/or as a Non-Employee Director of the Company,
whether voluntarily or otherwise, each Option theretofore granted to him or her
which shall not have theretofore expired or otherwise been cancelled shall, to
the extent not theretofore exercised, terminate upon the earlier to occur of the
expiration of 90 days after the date of such Participant's termination of
employment or service and the date of termination specified in such Option.
Notwithstanding the foregoing, if a Participant's employment by the Company and
the Subsidiaries or service as a consultant and/or as a Non-Employee Director of
the Company is terminated for "cause" (as defined herein), each Option
theretofore granted to him or her which shall not have theretofore expired or
otherwise been cancelled shall, to the extent not theretofore exercised,
terminate forthwith.

     B. For purposes of the foregoing, the term "cause" shall mean: (i) the
commission by a Participant of any act or omission that would constitute a crime
under federal, state or equivalent foreign law, (ii) the commission by a
Participant of any act of moral turpitude, (iii) fraud, dishonesty or other acts
or omissions that result in a breach of any fiduciary or other material duty to
the Company and/or the Subsidiaries or (iv) continued alcohol or other substance
abuse that renders a Participant incapable of performing his or her material
duties to the satisfaction of the Company and/or the Subsidiaries.



13.  Adjustment of Number of Shares.

     A. In the event that a dividend shall be declared upon the Common Stock
payable in shares of the Common Stock, the number of shares of the Common Stock
then subject to any Option and the number of shares of the Common Stock reserved
for issuance in accordance with the provisions of the Plan but not yet covered
by an Option and the number of shares set forth in Sections 6B and 9B shall be
adjusted by adding to each share the number of shares which would be
distributable thereon if such shares had been outstanding on the date fixed for
determining the stockholders entitled to receive such stock dividend. In the
event that the outstanding shares of the Common Stock shall be changed into or
exchanged for a different number or kind of shares of stock or other securities
of the Company or of another corporation, whether through reorganization,
recapitalization, stock split-up, combination of shares, sale of assets, merger
or consolidation in which the Company is the surviving corporation, then, there
shall be substituted for each share of the Common Stock then subject to any
Option and for each share of the Common Stock reserved for issuance in
accordance with the provisions of the Plan but not yet

                                     Page 6

<PAGE>

covered by an Option and for each share of the Common Stock referred to in
Sections 6B and 9B, the number and kind of shares of stock or other securities
into which each outstanding share of the Common Stock shall be so changed or for
which each such share shall be exchanged.

     B. In the event that there shall be any change, other than as specified in
Section 13, in the number or kind of outstanding shares of the Common Stock, or
of any stock or other securities into which the Common Stock shall have been
changed, or for which it shall have been exchanged, then, if the Committee
shall, in its sole discretion, determine that such change equitably requires an
adjustment in the number or kind of shares then subject to any Option and the
number or kind of shares reserved for issuance in accordance with the provisions
of the Plan but not yet covered by an Option and the number or kind of shares
referred to in Sections 6B and 9B, such adjustment shall be made by the
Committee and shall be effective and binding for all purposes of the Plan and of
each stock option agreement or certificate entered into in accordance with the
provisions of the Plan.

     C. In the case of any substitution or adjustment in accordance with the
provisions of this Section 13, the option price in each stock option agreement
or certificate for each share covered thereby prior to such substitution or
adjustment shall be the option price for all shares of stock or other securities
which shall have been substituted for such share or to which such share shall
have been adjusted in accordance with the provisions of this Section 13.

     D. No adjustment or substitution provided for in this Section 13 shall
require the Company to sell a fractional share under any stock option agreement
or certificate.

     E. In the event of the dissolution or liquidation of the Company, or a
merger, reorganization or consolidation in which the Company is not the
surviving corporation, then, except as otherwise provided in the second sentence
of Section 13A, each Option, to the extent not theretofore exercised, shall
terminate forthwith.



14.  Purchase for Investment, Withholding and Waivers.

     A. Unless the shares to be issued upon the exercise of an Option by a
Participant shall be registered prior to the issuance thereof under the
Securities Act of 1933, as amended, such Participant will, as a condition of the
Company's obligation to issue such shares, be required to give a representation
in writing that he or she is acquiring such shares for his or her own account as
an investment and not with a view to, or for sale in connection with, the
distribution of any thereof.

     B. In the event of the death of a Participant, a condition of exercising
any Option shall be the delivery to the Company of such tax waivers and other
documents as the Committee shall determine.

     C. In the case of each non-incentive stock option, a condition of
exercising the same shall be the entry by the person exercising the same into
such arrangements with the Company with respect to withholding as the Committee
may determine.

                                     Page 7

<PAGE>

15.  No Stockholder Status.

     Neither any Participant nor his or her legal representatives, legatees or
distributees shall be or be deemed to be the holder of any share of the Common
Stock covered by an Option unless and until a certificate for such share has
been issued. Upon payment of the purchase price thereof, a share issued upon
exercise of an Option shall be fully paid and non-assessable.



16.  No Restrictions on Corporate Acts.

     Neither the existence of the Plan nor any Option shall in any way affect
the right or power of the Company or its stockholders to make or authorize any
or all adjustments, recapitalizations, reorganizations or other changes in the
Company's capital structure or its business, or any merger or consolidation of
the Company, or any issue of bonds, debentures, preferred or prior preference
stock ahead of or affecting the Common Stock or the rights thereof, or
dissolution or liquidation of the Company, or any sale or transfer of all or any
part of its assets or business, or any other corporate act or proceeding whether
of a similar character or otherwise.



17.  Options Granted in Connection With Acquisitions.

     In the event that the Committee determines that, in connection with the
acquisition by the Company or a Subsidiary of another corporation which will
become a Subsidiary or division of the Company or a Subsidiary (such corporation
being hereafter referred to as an "Acquired Subsidiary"), Options may be granted
hereunder to employees and other personnel of an Acquired Subsidiary in exchange
for then outstanding options to purchase securities of the Acquired Subsidiary.
Such Options may be granted at such option prices, may be exercisable
immediately or at any time or times either in whole or in part, and may contain
such other provisions not inconsistent with the Plan, or the requirements set
forth in Section 19 that certain amendments to the Plan be approved by the
stockholders of the Company, as the Committee, in its discretion, shall deem
appropriate at the time of the granting of such Options.



18.  No Employment or Service Right.

     Neither the existence of the Plan nor the grant of any Option shall require
the Company or any Subsidiary to continue any Participant in the employ of the
Company or such Subsidiary or require the Company to continue any Participant as
a director of the Company.


19.  Termination and Amendment of the Plan.

     The Board may at any time terminate the Plan or make such modifications of
the Plan as it shall deem advisable; provided, however, that the Board may not
without further approval of the holders of a majority of the shares of the
Common Stock present in person or by proxy at any special or annual meeting of
the stockholders, increase the number of shares as to which Options

                                     Page 8

<PAGE>

may be granted under the Plan (as adjusted in accordance with the provisions of
Section 13), or change the manner of determining the option prices, or extend
the period during which an Option may be granted or exercised; provided,
however, the provisions of the Plan governing the grant of Non-Employee
Director's Formula Options may not be amended except by the vote of a majority
of the members of the Board and by the vote of a majority of the members of the
Board who are employees of the Company or a Subsidiary and shall not be amended
more than once every six months, other than to comport with changes in the Code,
the Employee Retirement Income Security Act of 1974 or the Rules of the
Securities and Exchange Commission promulgated under Section 16 of the Exchange
Act. Except as otherwise provided in Section 13, no termination or amendment of
the Plan may, without the consent of the Participant to whom any Option shall
theretofore have been granted, adversely affect the rights of such Participant
under such Option.



20.  Expiration and Termination of the Plan.

     The Plan shall terminate on August 27, 2006 or at such earlier time as the
Board may determine. Options may be granted under the Plan at any time and from
time to time prior to its termination. Any Option outstanding under the Plan at
the time of the termination of the Plan shall remain in effect until such Option
shall have been exercised or shall have expired in accordance with its terms.



                                      [END]



As adopted by the stockholders at a special meeting of stockholders held on
August 21, 1997;

as amended by the board of directors pursuant to a unanimous written consent
dated January 12, 1998;

as amended by the board of directors pursuant to a unanimous written consent
dated March 26, 1999;

as amended upon shareholder approval of amendments at the reconvened annual
meeting of stockholders on July 1, 1999.



                                     Page 9





                              EMPLOYMENT AGREEMENT

     THIS EMPLOYMENT AGREEMENT (the "Agreement"), made this 9th day of July,
1999, is entered into by Palatin Technologies, Inc., a Delaware corporation with
its principal place of business at 214 Carnegie Center, Suite 100, Princeton,
New Jersey 08540 (the "Company"), and Edward J. Quilty, residing at 1031
Creamery Road, Newtown, Pennsylvania 18940 (the "Employee").

     The Company desires to employ the Employee, and the Employee desires to be
employed by the Company. In consideration of the mutual covenants and promises
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged by the parties hereto, the parties
agree as follows:

     1. Term of Employment. The Company hereby agrees to employ the Employee,
and the Employee hereby accepts employment with the Company, upon the terms set
forth in this Agreement, for the period commencing on August 1, 1999 (the
"Commencement Date") and ending on July 31, 2002 (such period, as it may be
extended, the "Employment Period"), unless sooner terminated in accordance with
the provisions of Section 4.

     2. Title; Capacity.

          2.1 The Employee shall serve as Chairman of the Board and Chief
     Executive Officer of the Company with powers and duties as may be
     determined, from time to time, by the Company's Board of Directors (the
     "Board") which powers and duties shall not be inconsistent with the powers
     and duties customarily performed, undertaken and exercised by persons
     holding the positions of chairman of the board, president, chief executive
     officer or equivalents thereof. The Employee shall be based at the
     Company's headquarters in Princeton, New Jersey.

          2.2 The Employee hereby accepts such employment and agrees to
     undertake the duties and responsibilities inherent in such position and
     such other duties and responsibilities as the Board or its designee shall
     from time to time reasonably assign to him. The Employee agrees to devote
     as much of his business time, attention and energies to the business and
     interests of the Company during the Employment Period as may be reasonably
     necessary to adequately perform his duties hereunder, provided, however,
     that the Company recognizes that the Employee serves as the Chairman of the
     Board and is Chief Executive Officer of Derma Sciences, Inc., a publicly
     traded biopharmaceutical company and that such service does not present a
     conflict of interest with the Employee's employment with the Company
     insofar as Derma Sciences, Inc. is not a Competing Organization (as defined
     in Section 8). Nothing contained herein shall be deemed to restrict the
     Employee's right to continue in such a capacity. The Employee agrees to
     abide by the rules, regulations, instructions, personnel practices and
     policies of the Company and any changes therein which may be adopted from
     time to time by the Company. The Employee acknowledges receipt of copies of
     all such rules and policies committed to writing as of the date of this
     Agreement.

                                       2

<PAGE>


     3. Compensation and Benefits. During the Employment Period, unless sooner
terminated in accordance with the provisions of Section 4, the Employee shall
receive the following compensation and benefits:

          3.1 Salary. The Company shall pay the Employee, in equal semi-monthly
     installments or otherwise in accordance with the Company's standard payroll
     policies as such policies may exist from time to time, an annual base
     salary of $360,643. Such salary shall be subject to review thereafter, as
     determined by the Company's Compensation Committee and approved by the
     Board, on an annual basis on June of each year, but the Board shall not
     decrease the Employee's annual base salary at any such annual review.

          3.2 Cash Performance Bonus. The Company shall pay the Employee, in
     consideration of the Employee's experience in building value via the
     establishment of strategic alliances and relationships, bonus compensation
     of up to one year's base salary (which base salary shall not be less than
     $360,643 per year) in an amount to be decided by the Company's Compensation
     Committee and approved by the Board, payable annually, no later than March
     31 of each year during the Employment Period. Such performance bonus
     compensation shall be based upon, inter alia, yearly objectives mutually
     agreed upon by and between the Employee and the Board.

                                       3

<PAGE>


          3.3 Stock Options. As additional compensation for services rendered,
     the Company may from time to time grant to the Employee the right and
     option to purchase shares of the Company's Common Stock (the "Option"),
     subject to the vesting schedule and option term set forth in the relevant
     Option plan documents and the adjustments set forth in subparagraph f
     hereof, which Option is a nonqualified stock option. The Option is in all
     respects limited and conditioned as provided hereunder.

               (a) Purchase Price. Except as otherwise provided in subparagraph
          f hereof, the purchase price (the "Option Price") of the shares
          covered by the Option ("Option Shares") shall be the closing price of
          the Company's Common Stock on the National Association of Securities
          Dealers Automated Quotation System (Nasdaq) on the date of the Option
          grant.

               (b) Exercise of Option.

                    (i) Except as otherwise provided herein, the right of the
               Employee to exercise the Option is conditioned upon the Employee:
               (A) being in the employ of the Company, whether pursuant to this
               Agreement or otherwise, or (B) serving as a director of the
               Company.

                    (ii) The Option may be exercised, to the extent vested, in
               whole or in part, at any time or times prior to the expiration or
               other termination thereof.

                                       4

<PAGE>


               (c) Method Of Exercising Option.

                    (i) The Option may be exercised by giving written notice, in
               form substantially as set forth in Exhibit 1 hereof, to the
               Company at its principal office, specifying the number of Option
               Shares to be purchased and accompanied by payment in full of the
               aggregate purchase price for the Shares. Only full Shares shall
               be delivered and any fractional share which might otherwise be
               deliverable upon exercise of an Option granted hereunder shall be
               forfeited.

                    (ii) The purchase price shall be payable in cash or its
               equivalent.

                    (iii) Upon receipt of such notice and payment, the Company,
               within three (3) business days after Exercise, shall deliver or
               cause to be delivered a certificate or certificates representing
               the Shares with respect to which the Option is exercised. The
               certificate or certificates for such Shares shall be registered
               in the name of the person exercising the Option (or, if the
               Employee shall so request in the notice exercising the Option, in
               the name of the Employee and his spouse, jointly, with right of
               survivorship) and shall be delivered as provided above to or upon
               the written order of the person exercising the Option. In the
               event the Option is exercised by any person after the death or
               Legal Disability of the Employee, such notice shall be
               accompanied by appropriate proof of the right of such

                                       5

<PAGE>


               person to exercise  the  Option.  All Shares  purchased  upon the
               exercise of the Option as provided herein shall be fully paid and
               nonassessable by the Company.

               (d) Non-transferability of Option. The Option is not assignable
          or transferable, in whole or in part, by the Employee, otherwise than
          by will or by the laws of descent and distribution. During the
          lifetime of the Employee, the Option shall be exercisable only by the
          Employee or, in the event of his Legal Disability, by his legal
          representative.

               (e) Withholding of Taxes. The obligation of the Company to
          deliver Shares upon the exercise of any Option shall be subject to any
          applicable federal, state and local tax withholding requirements.

               (f) Adjustments. The number of Option Shares and the Option Price
          shall be adjusted as set forth herein:

                    (i) In the event that a stock dividend shall be declared on
               the Common Stock payable in shares of the Common Stock, the
               Option Shares shall be adjusted by adding to each Option Share
               the number of shares which would be distributable thereon if such
               Option Share had been outstanding on the date fixed for
               determining the shareholders entitled to receive such stock
               dividend.

                    (ii) In the event that the outstanding shares of the Common
               Stock shall be changed into or exchanged for a

                                       6

<PAGE>


               different  number or kind of shares of stock or other  securities
               of the Company  whether  through  recapitalization,  stock split,
               combination  of  shares,  or  otherwise,   then  there  shall  be
               substituted  for each Option  Share the number and kind of shares
               of stock or the securities into which each  outstanding  share of
               the Common Stock shall be so changed or for which each such share
               shall be exchanged.

                    (iii) In the event that the outstanding shares of the Common
               Stock shall be changed into or exchanged for shares of stock or
               other securities of another corporation, whether through
               reorganization, sale of assets, merger or consolidation in which
               the Company is the surviving corporation, then there shall be
               substituted for each Option Share the number and kind of shares
               of stock or the securities into which each outstanding share of
               the Common Stock shall be so changed or for which each such share
               shall be exchanged.

                    (iv) In the event that any sale of shares of Common Stock
               (except any such sale made pursuant to any right, option, warrant
               or convertible security outstanding prior to the date of this
               Agreement), or the issuance of any rights, options, or warrants
               to subscribe for or purchase Common Stock (or securities
               convertible into or exchangeable for Common Stock) occurs after
               the date of this Agreement, which sale or issuance, in the
               aggregate, will increase the

                                       7

<PAGE>


               number of shares of Common Stock  outstanding  during the Term by
               Forty percent (40%),  then, upon each such sale or issuance,  the
               Employee shall be issued additional Option Shares such that, when
               the  additional  Option  Shares  are  aggregated  with the Option
               Shares  heretofore  owned by the  Employee,  the Employee has the
               right to purchase, at the same times set forth in paragraph 4(c),
               the same  percentage  of Common Stock at the same price per share
               as the Employee maintained prior to such sale or issuance.

               (g) Share Ownership. Neither the Employee nor the Employee's
          legal representatives nor the executors or administrators of his
          estate shall be or be deemed to be the holder of any share of Common
          Stock covered by an Option unless and until a certificate for such
          share shall have been issued.

          3.4 Fringe-Benefits. The Employee shall be entitled to participate in
     all bonus and benefit programs that the Company establishes and makes
     available to its employees, if any, to the extent that the Employee's
     position, tenure, salary, age, health and other qualifications make him
     eligible to participate. In addition, during the Employment Period the
     Corporation shall reimburse the Employee for any premiums, co-payments,
     deductibles and other expenses incurred by the Employee to maintain the
     $1,000,000 term life insurance policy issued in 1992, procured by the
     Employee from New England Life Insurance Company for his

                                       8

<PAGE>


     benefit  and the  benefit  of his  designees.  The  Employee  shall also be
     entitled to  holidays  and annual  vacation  leave in  accordance  with the
     Company's policy as it exists from time to time.

          3.5 Reimbursement of Expenses. The Company shall reimburse the
     Employee for all reasonable travel, entertainment and other expenses
     incurred or paid by the Employee in connection with, or related to, the
     performance of his duties, responsibilities or services under this
     Agreement, upon presentation by the Employee of documentation, expense
     statements, vouchers and/or such other supporting information as the
     Company may request, provided, however, that the amount available for such
     travel, entertainment and other expenses may be fixed in advance by the
     Board.

          3.6 Insurance. The Employee will be covered under the Company's
     Directors' and Officers' liability insurance to the same extent the
     Company's directors and officers are covered.

     4. Employment Termination. The employment of the Employee by the Company
pursuant to this Agreement shall terminate upon the occurrence of any of the
following:

          4.1 Expiration of the Employment Period in accordance with Section 1;

          4.2 At the election of the Company, for Cause (as defined in Section
     7), immediately upon written notice by the

                                       9

<PAGE>


     Company  to the  Employee,  which  notice of  termination  shall  have been
     approved by a majority of the Board;

          4.3 Immediately upon the death or determination of Legal Disability
     (as defined in Section 7) of the Employee;

          4.4 At the election of the Employee, for Good Reason (as defined in
     Section 7), immediately upon written notice by the Employee to the Company;

          4.5 At the election of the Employee, within twelve (12) months
     following a Change in Control (as defined in Section 7), immediately upon
     written notice by the Employee to the Company;

          4.6 At the election of either party, upon not less than thirty (30)
     days' prior written notice of termination (the "Notice of Termination").

     5. Effect of Termination.

          5.1 Termination for Cause or at Election of the Employee other than
     for Good Reason or due to a Change in Control. If, prior to the expiration
     of this Agreement, the Employee's employment is terminated for Cause
     pursuant to Section 4.2 (except in the case where such termination occurs
     within 12 months following a Change in Control), or at the election of the
     Employee pursuant to Section 4.6 other than for Good Reason or due to a
     Change in Control,

               (a) the Company shall pay to the Employee the base salary and
          benefits otherwise payable to him under Section 3

                                       10

<PAGE>


          through  the last day of his actual  employment  by the  Company  (the
          "Date of Termination");

               (b) the Employee shall cease to have the right to exercise any
          options to purchase shares of capital stock of the Company previously
          granted to the Employee pursuant to any stock option plan or other
          employee benefit plan with the Company, regardless of the extent to
          which they have vested, on or after the Date of Termination.

          5.2 Termination by Reason of the Employee's Death or Legal Disability.
     If, prior to the expiration of this Agreement, the Employee's employment is
     terminated by the Employee's death or Legal Disability pursuant to Section
     4.3,

               (a) the Company shall, no later than the fifth business day
          following the death or determination of Legal Disability (the "Date of
          Termination"), pay to the Employee, or in the case of the Employee's
          death, to the estate of the Employee,

                    (i) the Employee's base salary and benefits otherwise
               payable to him through the Date of Termination, and

                    (ii) an amount equal to the greater of the aggregate base
               salary payments which the Employee would have received for a
               six-month period after the Date of Termination if such
               termination had not occurred, or $180,321.50, and

                                       11

<PAGE>


               (b) all options to purchase shares of capital stock of the
          Company previously granted to the Employee pursuant to any stock
          option plan or other employee benefit plan with the Company which have
          not vested at such time but which would have vested on and prior to
          the next Anniversary Date shall immediately vest and become fully
          exercisable in accordance with their terms for a period of ninety (90)
          days following the Date of Termination.

          5.3 Termination for Any Other Reason. If, prior to the expiration of
     this Agreement, the Employee's employment is terminated by the Employee for
     circumstances constituting Good Reason pursuant to Section 4.4 or due to a
     Change in Control pursuant to Section 4.5, or by the Company for any basis
     other than for Cause (as defined in Section 7) or for Cause pursuant to
     Section 4.2 if within twelve (12) months following a Change in Control, the
     Company shall provide the Employee with the following benefits:

               (a) the Company shall pay to the Employee

                    (i) the Employee's base salary at the rate in effect at the
               time the Notice of Termination is given, benefits and all other
               compensation, including Employee's prorated cash performance
               bonus calculated by multiplying the Applicable Percentage (as
               defined in Section 7) by the greater of (x) the amount of the
               cash performance bonus awarded or awarded or paid to the Employee
               with respect to

                                       12

<PAGE>


               the Company's most recent full fiscal year for which such a bonus
               was  awarded  or paid  to the  Employee  or (y) in the  case of a
               Change in Control,  the amount of cash performance  bonus awarded
               or paid to the Employee with respect to the  Company's  last full
               fiscal year prior to the Change in Control for which such a bonus
               was  awarded  or  paid  to the  Employee,  through  the  Date  of
               Termination,  no later than the fifth full day following the Date
               of  Termination,  plus all other amounts to which the Employee is
               entitled under any  compensation  plan of the Company at the time
               such payments are due and

                    (ii) if the Employee so elects, in lieu of his right to
               continue to receive deferred compensation under any deferred
               compensation plan of the Company then in effect, no later than
               the fifth full day following the Date of Termination, a lump-sum
               amount, in cash, equal to the deferred amounts together with any
               earnings credited on such amounts under such plan;

               (b) the Company will pay as severance to the Employee an amount
          equal to the sum of

                    (i) the greatest of (x) the aggregate Salary payments which
               the Employee would have received during the balance of the Term
               if such termination had not occurred, (y) in the case of a Change
               in Control, the aggregate Salary payments which the Employee
               would have received during the

                                       13

<PAGE>


               balance of the Term based on the Employee's annual base salary in
               effect  immediately  prior to the  Change in  Control,  or (z) an
               amount  equal  to  the  Employee's  highest  annual  base  salary
               achieved while employed by the Company, plus

                    (ii) the greater of (x) the amount of the cash performance
               bonus awarded or paid to the Employee with respect to the
               Company's most recent full fiscal year for which such a bonus was
               awarded or paid to the Employee or (y) in the case of a Change in
               Control, the amount of cash performance bonus awarded or paid to
               the Employee with respect to the Company's last full fiscal year
               prior to the Change in Control for which such a bonus was awarded
               or paid to the Employee;

               (c) all options to purchase shares of capital stock of the
          Company previously granted to the Employee pursuant to any stock
          option plan or other employee benefit plan with the Company which have
          not vested at such time shall immediately vest and become fully
          exercisable in accordance with their terms for a period of ninety (90)
          days following the Date of Termination;

               (d) for a one-year period after the Date of Termination, the
          Company shall arrange to provide the Employee with life, disability,
          dental, accident, travel and group health insurance benefits
          substantially similar to those which the Employee was receiving
          immediately prior to

                                       14

<PAGE>


          the Notice of Termination.  Notwithstanding the foregoing, the Company
          shall not provide any benefit  otherwise  receivable  by the  Employee
          pursuant to this  paragraph (d) if an  equivalent  benefit is actually
          received by the Employee during the one-year period following the Date
          of Termination and any such benefit actually  received by the Employee
          shall be reported to the Company; and

               (e) for a six-month period after the Date of Termination, the
          Company shall reimburse the Employee for reasonable fees and expenses
          incurred by him for the purpose of locating employment in an amount
          mutually agreed upon by and between the Employee and the Company,
          including the fees and expenses of consultants and other persons
          retained by him for such purpose, promptly upon receipt by the Company
          of satisfactory evidence of payment of such fees and expenses.

          5.4 No Requirement to Mitigate. The Employee shall not be required to
     mitigate the amount of any payment provided for herein by seeking other
     employment or otherwise.

          5.5 Survival. The provisions of Sections 5, 6, 7, 8 and 9 shall
     survive the termination of this Agreement.

     6. Withholding and Deductions. All payments hereunder shall be subject to
withholding and to such other deductions as shall at the time of such payment be
required pursuant to any income tax or other law, whether of the United States
or any

                                       15

<PAGE>


other jurisdiction, and, in the case of payments to the executors or
administrators to the Employee's estate, the delivery to the Company of all
necessary tax waivers and other documents.

     7. Definitions. For purposes of this Agreement the following definitions
apply:

          7.1 "Cause" for termination shall mean the occurrence of any of the
     following circumstances:

               (a) a good faith finding by the Company of the Employee's willful
          breach or habitual neglect or failure to perform the material duties
          which he is required to perform under the terms of this Agreement,
          materially fails to follow the reasonable directives or policies
          established by or at the direction of the Board, or conducts himself
          in a manner materially detrimental to the interests of the Company
          such that the Company sustains a material loss or injury as a result
          thereof and such breach or failure of performance is not cured within
          thirty (30) days of the delivery to the Employee of written notice
          thereof, which notice of breach or failure of performance shall have
          been approved by a majority of the Board,

               (b) the willful breach by the Employee of Section 8 of this
          Agreement or any provision of any confidentiality, invention and
          non-disclosure, non-competition or similar agreement between the
          Employee and the Company, or

                                       16

<PAGE>


               (c) the conviction of the Employee of, or the entry of a pleading
          of guilty or nolo contendere by the Employee to, any crime involving
          moral turpitude or any felony.

          7.2 "Legal Disability" shall mean the inability of the Employee, by
     reason of illness, accident or other physical or mental disability, for a
     period of 120 days, whether or not consecutive, during any 360-day period,
     to perform the services contemplated under this Agreement. A determination
     of disability shall be made by a physician satisfactory to both the
     Employee and the Company; provided, however, that if the Employee and the
     Company do not agree on a physician, the Employee and the Company shall
     each select a physician and these two together shall select a third
     physician, whose determination as to disability shall be binding on all
     parties.


<PAGE>


                                                                     -1-

          7.3 "Good Reason" shall mean the occurrence of any of the following
     circumstances, and the Company fails to cure such circumstances within
     thirty (30) days of the delivery to the Company of written notice of such
     circumstances:

               (a) any failure of the shareholders of the Company to elect or
          re-elect the Employee as a director of the Company;

               (b) any significant diminution in the Employee's duties and
          responsibilities as in effect on the Commencement Date;

                                       17

<PAGE>


               (c) any reduction in the Employee's annual compensation as in
          effect on the Commencement Date or as the same may be increased from
          time to time;

               (d) the failure of the Company to continue in effect any material
          compensation or benefit plan in which the Employee participates as in
          effect on the Commencement Date, unless an equitable arrangement
          (embodied in an ongoing substitute or alternative plan) has been made
          with respect to such plan, or the failure by the Company to continue
          the Employee's participation therein (or in such substitute or
          alternative plan) on a basis not materially less favorable, both in
          terms of the amount of benefits provided and the level of the
          Employee's participation relative to other participants, as in effect
          on the Commencement Date or the failure by the Company to award cash
          bonuses to its executives in amounts substantially consistent with
          past practice in light of the Company's financial performance;

               (e) the failure by the Company to continue to provide the
          Employee with benefits substantially similar to those enjoyed by the
          Employee under any of the Company's insurance, medical, health and
          accident, or disability plans in which the Employee was participating
          as in effect on the Commencement Date, the taking of any action by the
          Company which would directly or indirectly materially reduce any of
          such benefits, or the failure by the Company to provide the

                                       18

<PAGE>


          Employee with the number of paid vacation days to which he is entitled
          in accordance  with the Company's  normal vacation policy in effect on
          the Commencement  Date or in accordance with any agreement between the
          Employee and the Company existing at that time;

               (f) any purported termination of the Employee's employment which
          is not effected pursuant to a Notice of Termination satisfying the
          requirements of Section 9, which purported termination shall not be
          effective for purposes of this Agreement.

          7.4 Change in Control:

               (a) "Change in Control" shall mean the occurrence of any of the
          following events:

                    (i) any "person," as such term is used in Sections 13(d) and
               14(d) of the Securities Exchange Act of 1934, as amended (the
               "Exchange Act") (other than the Company, any trustee or other
               fiduciary holding securities under an employee benefit plan of
               the Company, or any corporation owned directly or indirectly by
               the stockholders of the Company in substantially the same
               proportion as their ownership of stock of the Company) is or
               becomes the "beneficial owner" (as defined in Rule 13d-3 under
               the Exchange Act), directly or indirectly, of securities of the
               Company representing 40% or more of the combined voting power of
               the Company's then outstanding securities;

                                       19

<PAGE>


                    (ii) individuals who, as of the Commencement Date,
               constitute the Board (as of the Commencement Date, the "Incumbent
               Board") cease for any reason to constitute at least a majority of
               the Board, provided that any person becoming a director
               subsequent to the Commencement Date whose election, or nomination
               for election by the Company's stockholders, was approved by a
               vote of at least a majority of the directors then comprising the
               Incumbent Board (other than an election or nomination of an
               individual whose initial assumption of office is in connection
               with an actual or threatened election contest relating to the
               election of the directors of the Company, as such terms are used
               in Rule 14a-11 of Regulation 14A under the Exchange Act) shall
               be, for purposes of this Agreement, considered as though such
               person were a member of the Incumbent Board;

                    (iii) the stockholders of the Company approve a merger or
               consolidation of the Company with any other corporation, other
               than

                         (x) a merger or consolidation which would result in the
                    voting securities of the Company outstanding immediately
                    prior thereto continuing to represent (either by remaining
                    outstanding or by being converted into voting securities of
                    the surviving entity) more than 80% of the combined voting
                    power of the voting securities of the Company or such
                    surviving

                                       20

<PAGE>


                    entity   outstanding   immediately   after  such  merger  or
                    consolidation or

                         (y) a merger or consolidation effected to implement a
                    recapitalization of the Company (or similar transaction) in
                    which no "person" (as hereinabove defined) acquires more
                    than 50% of the combined voting power of the Company's then
                    outstanding securities; or

                    (iv) the stockholders of the Company approve a plan of
               complete liquidation of the Company or an agreement for the sale
               or disposition by the Company of all or substantially all of the
               Company's assets.

               (b) Nothing contained in the definition of Change in Control
          shall limit or restrict the right of the Employee, in his capacity as
          a member of the Board, from participating any discussions or voting on
          any matter referred to in said definition at any meeting of the Board.

          7.5 "Applicable Percentage" means the percentage obtained by dividing
     the number of full or partial months worked in the most recent fiscal year
     for which the Employee has not been awarded or paid a cash performance
     bonus by twelve.

     8. Restrictive Covenants.

               (a) For the purposes of this Agreement:

                    (i) "Proprietary Information" means all information and
               know-how, whether or not in writing, of a private, secret or
               confidential nature concerning the

                                       21

<PAGE>


               company's  business  or  financial  affairs,  including,  without
               limitation, inventions, products, processes, methods, techniques,
               formulas, compositions, compounds, projects, developments, plans,
               research data,  clinical data,  financial  data,  personnel data,
               computer programs and customer and supplier lists.

                    (ii) "Competing Products" means any products or processes of
               any person or organization other than the Company in existence or
               under development, which are substantially the same, may be
               substituted for, or applied to substantially the same end use as
               the products or processes that the Company is developing or has
               developed or commercialized during the time of the Employee's
               employment with the Company.

                    (iii) "Competing Organization" means any person or
               organization engaged in, or about to become engaged in, research
               or development, production, distribution, marketing or selling of
               a Competing Product.

               (b) The Employee understands that information regarding the
          Company and its affiliates including, without limitation, Proprietary
          Information, is considered confidential to the Company and is of
          substantial commercial value to the Company. Any entrusting of such
          confidential information to the Employee by the Company is done so in
          reliance upon the confidential relationship arising from the

                                       22

<PAGE>


          terms of his employment with the Company.  Therefore, in consideration
          of his employment with the Company,

                    (i) the Employee will not, during or after the Employment
               Period, disclose any such confidential information to any person,
               firm, corporation, association, or other entity for any reason or
               purpose whatsoever, except within the scope of his duties and
               responsibilities in the normal course of business, unless ordered
               to do so by a court or other tribunal or government agency with
               jurisdiction over the subject matter and Employee;

                    (ii) the Employee acknowledges that he has, on or prior to
               the date of the Agreement, executed and delivered to the Company
               a Non-Disclosure Agreement (the "Confidentiality Agreement") and
               the Employee hereby affirms and ratifies his obligation
               thereunder; and

                    (iii) the  Employee  agrees  that after  termination  by the
               Company  for Cause  pursuant  to Section  4.2 (except in the case
               where such termination occurs within 12 months following a Change
               in  Control),  or by the  Employee  pursuant to Section 4.6 other
               than for Good Reason or due to a Change in  Control,  he will not
               render  services of any nature,  directly or  indirectly,  to any
               Competing  Organization in connection with any Competing  Product
               within  such  geographical  territory  as the  Company  and  such
               Competing Organization are or would be in actual competition, for
               a

                                       23

<PAGE>


               period  of  eighteen  (18)  months,  commencing  on the  Date  of
               Termination,  provided,  however, the aforementioned restrictions
               shall not be  applicable to activities in which the Employee was,
               and  continued  to  be,  engaged  in on  the  Commencement  Date,
               including the activities  provided for in Section 2.2 hereof. The
               Employee  understands  that services  rendered to such  Competing
               Organization may have the effect of supporting actual competition
               in  various  geographic  areas,  and  may be  prohibited  by this
               Agreement  regardless  of  the  geographic  area  in  which  such
               services are  physically  rendered.  The Company may, in its sole
               discretion,  elect to waive,  in whole or in part, the obligation
               set forth in the previous  sentence,  such waiver to be effective
               only if given in writing by the Company.

               (c) The Employee agrees that he will not, during the Employment
          Period and for a period of nine (9) months commencing on the Date of
          Termination, directly or indirectly employ, solicit for employment, or
          advise or recommend to any other person that they employ or solicit
          for employment, any person whom he knows to be an employee of the
          Company or any parent, subsidiary or affiliate of the Company.

               (d) In the event a court of competent jurisdiction should find
          any provision in this Section 8 to be unfair or unreasonable, such
          finding shall not render such provision

                                       24

<PAGE>


          unenforceable,  but,  rather,  this provision  shall be modified as to
          subject  matter,  time and geographic  area so as to render the entire
          Section valid and enforceable.

     9. Notices. All notices required or permitted under this Agreement shall be
in writing and shall be deemed effective upon personal delivery or upon deposit
in the United States Post Office, by registered or certified mail, postage
prepaid, addressed to the other party at the address shown above, or at such
other address or addresses as either party shall designate to the other in
accordance with this Section 9.

     10. Indemnification. The Company shall indemnify the Employee to the
fullest extent permitted by the General Corporation Law of the State of
Delaware, as amended from time to time, for all amounts (including, without
limitation, judgments, fines, settlement payments, expenses and attorney's fees)
incurred or paid by the Employee in connection with any action, suit,
investigation or proceeding arising out of or relating to the performance by the
Employee of services for, or acting by the Employee as a director, officer or
employee of, the Company or any other person or enterprise at the Company's
request, and shall to the fullest extent permitted by the General Corporation
Law of the State of Delaware, as amended from time to time, advance all expenses
incurred or paid by the Employee in connection with, and until disposition of
any action, suit, investigation or proceeding arising out of or relating to the

                                       25

<PAGE>


performance by the Employee of services for, or acting by the Employee as a
director, officer or employee of, the Company or any other person or enterprise
at the Company's request.

     11. Pronouns. Whenever the context may require, any pronouns used in this
Agreement shall include the corresponding masculine, feminine or neuter forms,
and the singular forms of nouns and pronouns shall include the plural, and vice
versa.

     12. Entire Agreement. This Agreement, together with the Confidentiality
Agreement, constitutes the entire agreement between the parties and supersedes
all prior agreements and understandings, whether written or oral, relating to
the subject matter of this Agreement, including a certain employment agreement
by and between the Company and the Employee dated as of November 16, 1995, as
amended September 27, 1996 (the "September 1996 Amended Agreement"), except that
Article SIXTH of the September 1996 Amended Agreement with respect to the
granting, vesting and exercise of certain stock options to the Employee shall
continue in full force and effect with respect to such options, subject to the
provisions in Section 5 herein with respect to the vesting and exercise of
options upon termination.

     13. Amendment. This Agreement may be amended or modified only by a written
instrument executed by both the Company and the Employee.

     14. Governing Law. Except as otherwise provided in Section 10, this
Agreement shall be construed, interpreted and enforced

                                       26

<PAGE>


in accordance  with the laws of New Jersey,  without regard to its principles of
conflict of laws.

     15. Successors and Assigns. This Agreement shall be binding upon and inure
to the benefit of both parties and their respective successors and assigns,
including any corporation with which or into which the Company may be merged or
which may succeed to its assets or business; provided, however, that the
obligations of the employee are unique and personal and shall not be assigned by
him.

     16. Waiver of Breach.

          16.1 Waiver by the Company. No delay or omission by the Company in
     exercising any right under this Agreement shall operate as a waiver of that
     or any other right. A waiver or consent given by the Company on any one
     occasion shall be effective only in that instance and shall not be
     construed as a bar or waiver of any right on any other occasion. No waiver
     by the Company shall be valid unless in a writing signed by an authorized
     officer of the Company and approved by an absolute majority of the Board.

          16.2 Waiver by the Employee. No delay or omission by the Employee in
     exercising any right under this Agreement shall operate as a waiver of that
     or any other right. A waiver or consent given by the Employee on any one
     occasion shall be effective only in that instance and shall not be
     construed as a bar or waiver of any right on any other occasion. No waiver
     by

                                       27

<PAGE>


     the Employee shall be valid unless in a writing signed by the Employee.

     17. Miscellaneous.

          17.1 The captions of the sections of this Agreement are for
     convenience of reference only and in no way define, limit or affect the
     scope or substance of any section of this Agreement.

          17.2 In case any provision of this Agreement shall be invalid, illegal
     or otherwise unenforceable, the validity, legality and enforceability of
     the remaining provisions shall be no way be affected or impaired thereby.


     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as an
instrument under seal as of the day and year set forth above.


                                            PALATIN TECHNOLOGIES, INC.

                                            By: /s/ James T. O'Brien
                                                ---------------------
                                            Name:
                                            Title:


                                            EMPLOYEE
                                            /s/  Edward J. Quilty
                                            --------------------------
                                            Edward J. Quilty



                                       28



                        STRATEGIC COLLABORATION AGREEMENT


                  THIS STRATEGIC  COLLABORATION AGREEMENT dated as of August 17,
1999 (the  "Agreement")  is made by and between  PALATIN  TECHNOLOGIES,  INC., a
Delaware corporation  ("Palatin") and MALLINCKRODT INC., a Delaware corporation,
by and through its unincorporated Medical Imaging division ("Mallinckrodt").

                                    RECITALS

          WHEREAS,  Palatin has certain intellectual property rights (including,
without  limitation,  certain  patents)  concerning,  and is in the  process  of
developing   a   proprietary   compound   called,   LeuTech(TM),   which   is  a
radiopharmaceutical product useful for imaging infection and inflammation;

          WHEREAS,   Mallinckrodt   is  interested  in  entering  into  a  joint
collaboration  with  Palatin  for the  development  of a  commercial  product or
products from  LeuTech(TM) and desires to obtain an exclusive  license to market
and sell any product or products developed from LeuTech(TM) in all the countries
of the world,  excluding  those  countries and other  sovereign  territories  in
Europe, in accordance with the principles set forth herein; and

          WHEREAS,  Palatin is willing to enter into such a collaboration and to
grant Mallinckrodt such a license upon the terms and conditions set forth below.

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

                                    Article 1

                          DEFINITIONS OF CERTAIN TERMS

         For  purposes of this  Agreement,  the terms  defined in this  Article
shall have the meanings specified below:

         1.1 "Adverse Events" shall mean an adverse drug experience as defined
in 21 C.F.R.ss.314.80 (a).

         1.2  "Affiliate"  shall  mean any  corporation  or other  entity  which
directly or indirectly  controls,  is  controlled by or is under common  control
with a party to this Agreement.  A corporation or other entity shall be regarded
as in  control  of  another  corporation  or  entity if it owns or  directly  or
indirectly  controls  more than fifty percent (50%) of the voting stock or other
ownership  interest  of the other  corporation  or entity,  or if it  possesses,
directly  or  indirectly,  the power to direct  or cause  the  direction  of the
management and policies of the corporation or other entity or the power to elect
or appoint fifty  percent (50%) or more of the members of the governing  body of
the corporation or other entity.

         1.3 "Annual  Development Plan" shall have the meaning ascribed to it in
Section 3.1(f) and "Annual Marketing Plan" shall have the meaning ascribed to it
in Section 2.2(d).

         1.4  "BLA"  shall  mean  a  Biologics  License   Application,   or  its
substantial equivalent,  filed with the FDA (as defined below), or, with respect
to  countries  other  than the  United  States,  with the  governing  health  or
regulatory authority of such country.

         1.5 "cGMP" shall mean current Good Manufacturing Practices as
determined at any given time by the FDA.

         1.6  "Change in Control"  shall mean the  occurrence,  with  respect to
Palatin, of any one of the following events:

                  (a) any "person" as such term is defined in Section 3(a)(9) of
the  Securities  Exchange  Act of 1934  (and as used in  Sections  13(d)(3)  and
14(d)(2)  of such Act) is or becomes a  "beneficial  owner" (as  defined in Rule
13d-3  under  such  Act),  directly  or  indirectly,  of  securities  of Palatin
representing  greater than fifty percent  (50%) of the combined  voting power of
Palatin's then outstanding  securities  eligible to vote for the election of its
board of directors;  provided,  however, that the event described in this clause
(a)  shall  not be  deemed  to be a change  in  control  by virtue of any of the
following  acquisitions:  (i) by  Palatin  or  any  wholly-owned  subsidiary  of
Palatin, (ii) by any employee benefit plan sponsored or maintained by Palatin or
any  subsidiary  of  Palatin,  (iii)  by  any  underwriter  temporarily  holding
securities  pursuant  to an  offering  of such  securities,  or (iv)  except  as
provided in subsection  1.6(c) below, in which voting  securities of Palatin are
acquired from Palatin, if a resolution  providing expressly that the acquisition
pursuant to this clause (iv) does not constitute a change in control is approved
by a vote of at least a majority of the  directors  who are directors of Palatin
on and as of the date hereof;

                  (b) individuals who, on the date hereof,  constitute the board
of directors of Palatin  cease for any reason to  constitute at least a majority
thereof,  provided  that any person  becoming a director  subsequent to the date
hereof, whose election,  or nomination for election,  by Palatin's  stockholders
was approved by a vote of at least a majority of the  directors  comprising  the
current  board of  directors  (either by a specific  vote or by  approval of the
proxy  statement  of  Palatin  in which  such  person is named as a nominee  for
director,  without  objection to such nomination) shall be, for purposes of this
clause (b),  considered as though such person were a member of the current board
of  directors;  provided,  however,  that no  individual  initially  elected  or
nominated  as a  director  of  Palatin  as a result of an  actual or  threatened
election  contest with  respect to  directors or any other actual or  threatened
solicitation of proxies or consents by or on behalf of any person other than the
board of  directors  shall be  deemed  to be a member  of the  current  board of
directors;

                  (c) a merger, consolidation, share exchange or similar form of
corporate   reorganization  of  Palatin  requiring  the  approval  of  Palatin's
stockholders  (whether for such transaction or the issuance of securities in the
transaction or otherwise);  provided,  however, that a "change in control" shall
not be deemed to occur upon a merger,  consolidation,  share exchange or similar
form of corporate reorganization of Palatin, whether or not stockholder approval
is required,  so long as (A) the Board of  Directors of any entity  surviving or
resulting from such reorganization  contains at least fifty percent (50%) of the
directors  who were  members of the board of  directors  of Palatin  immediately
prior to such  reorganization  and (B) the Chief  Executive  Officer of any such
surviving  entity is the same person as the Chief  Executive  Officer of Palatin
immediately prior to such reorganization;

                  (d) the direct or indirect sale or other  disposition  of all,
substantially all or any substantial parts of the assets or lines of business of
Palatin,  whether or not approval of any such  transaction  by  stockholders  is
required;  provided, however, Palatin shall be able to sell or otherwise dispose
of  non-LeuTech  assets or lines of  business  in a  transaction  not  otherwise
qualifying as a "Change of Control" under  subsections  (a), (b) and (c) of this
Section 1.6,  whether or not approval of such  transaction  by  stockholders  is
required,  and such sale or other  disposition shall not constitute a "Change of
Control"; or

         (e) the stockholders of Palatin approve a plan of complete liquidation
or dissolution of Palatin.

         1.7 "Common Shares" shall mean, at any given time,  those shares of the
Common Stock,  owned by  Mallinckrodt  as a  consequence  of its exercise of the
conversion rights set forth in Section 5.2(c) or Section 5.2(e) below.

         1.8 "Common Stock" shall mean the publicly traded,  voting common stock
of Palatin.

         1.9 "Defective Product" shall have the meaning ascribed to it in
Section 2.3(k) below.

         1.10  "Development  Costs"  shall  mean all  external  costs and direct
internal costs incurred in connection with the  development of LeuTech  Products
for diagnosing and imaging  equivocal  appendicitis  and  osteomyelitis  for the
North  American  portion  (i.e.,  the United States and Canada) of the Territory
during the Development Phase, [INFORMATION OMITTED AND FILED SEPARATELY WITH THE
COMMISSION UNDER RULE 24b-2.]

         1.11  "Development  Criteria"  shall mean those  milestones and actions
that  Palatin is required to achieve,  in the manner and in the time  specified,
with respect to the development of LeuTech, which milestones and actions are set
forth in Section 3.2(a) set forth below.

         1.12   "Development   Payments"   shall  mean  those  payments  due  by
Mallinckrodt  to Palatin in  accordance  with  Section  5.7(b)  herein  below as
Mallinckrodt's  share of  Development  Costs with respect to the  development of
LeuTech  Products  for  diagnosing  and  imaging   equivocal   appendicitis  and
osteomyelitis for the North American portion of the Territory.

         1.13  "Development  Phase"  shall  mean,  as to each and every  LeuTech
Indication,  the  period of time with  respect to any  portion of the  Territory
during  which such LeuTech  Indication  is being  developed  and such phase will
terminate,  with respect to any given portion of the Territory,  on the later of
the date  approval for the  marketing  and sale of such LeuTech  Indication as a
LeuTech Product is granted by the appropriate  regulatory  authority in any such
portion  of  the  Territory  or  the  date  upon  which  post-approval   product
development activities required by any government organization are complete.

         1.14  "Development  Program"  shall mean the  development  program  for
LeuTech  Products  for  diagnosing  and  imaging   equivocal   appendicitis  and
osteomyelitis  for  commercial  sales  in  the  North  American  portion  of the
Territory,  as such  program  will be more fully  described  in the first Annual
Development  Plan to be prepared by Palatin and delivered to Mallinckrodt at the
first meeting of the Joint Steering  Committee in connection  herewith,  as such
program may be amended from time to time by the parties in accordance  with this
Agreement.

         1.15 "Dilutive  Event" shall have the meaning  ascribed to such term in
Section 5.2(e) below.

         1.16 "Europe" shall mean Ireland, Northern Ireland, the United Kingdom,
Iceland, Norway, Sweden, Finland, Denmark,  Portugal, Spain, Gibraltar,  France,
Monaco, Andorra, Belgium, the Netherlands, Luxembourg, Germany, Poland, Hungary,
Romania,  Bulgaria,  Slovakia,  the  Czech  Republic,  Austria,   Liechtenstein,
Switzerland,  Italy, San Marino, the Holy See, Malta, Greece,  Serbia,  Croatia,
Slovenia, Bosnia, Montenegro,  Macedonia, Kosovo, Albania, the Russian Republic,
the Ukraine, Belarus, Moldova, Latvia, Lithuania and Estonia.

         1.17 "FDA" shall mean the United States Food and Drug Administration.

         1.18 "First  Commercial  Sale" shall mean the first sale of any LeuTech
Products  for use or  consumption  by the  general  public in any portion of the
Territory, when such sale has been made with the required marketing approval, as
appropriate to the portion of the Territory,  granted by the governing health or
regulatory authority.

         1.19  "Indemnitee"  shall  have the  meaning  ascribed  to such term in
Section 8.5 below.

         1.20  "Indemnitor"  shall  have the  meaning  ascribed  to such term in
Section 8.5 below.

         1.21  "Information"  shall have the  meaning  ascribed  to such term in
Section 7.1(a) below.

         1.22 "Joint Steering Committee" shall have the meaning ascribed to such
term in Section 4.1(a) below.

         1.23 "Launch  Activities" shall mean those activities to be carried out
by  Mallinckrodt  in connection  with the  commencement  of commercial  sales of
LeuTech  Products  in any  portion  of the  Territory,  which  activities  shall
generally include those listed on Exhibit B attached hereto.

         1.24  "LeuTech(TM)"  shall mean and refer to that compound the chemical
structure of which is described generally on Exhibit C attached hereto.

         1.25  "LeuTech   Indication"   shall  mean  any  specific  imaging  and
diagnostic  use of  LeuTech(TM),  whether in the  process of  development  or as
approved by the appropriate governmental regulatory agency or agencies.

         1.26 "LeuTech  Products" shall mean each and every  commercial  product
that is or can be  developed  for sale  from  LeuTech(TM)  and  which is used or
usable for nuclear imaging of infection or inflammation,  and shall specifically
and in every instance (unless the context  otherwise  clearly requires and until
such time as the Joint  Steering  Committee  expands the universe of  commercial
products  to be  developed  hereunder)  refer  at  the  very  least  to  LeuTech
Indications for equivocal  appendicitis and osteomyelitis as developed hereunder
for sale as commercial  products in the North American  portion of the Territory
(i.e.,  all uses of the term "LeuTech  Products"  herein shall be a reference to
developed  commercial  products  usable for  diagnosis  and imaging of equivocal
appendicitis and/or osteomyelitis and appropriate for sale in the North American
portion of the Territory).

         1.27 "License Payments" shall mean the payments made by Mallinckrodt to
Palatin as described in Section 5.1 below in consideration of the license rights
granted by Palatin to Mallinckrodt in accordance with Section 2.1 below.

         1.28 "Mallinckrodt  Indemnitee" shall have the meaning ascribed to such
term in Section 5.6(a) below.

         1.29  "Marketing  Criteria"  shall mean those  milestones,  actions and
obligations  that,  with  respect  to any given  period of time and in any given
portion of the Territory,  Mallinckrodt  is required to achieve and perform,  in
the  manner  and time  specified,  with  respect  to the  sales,  marketing  and
distribution of LeuTech Products,  which Marketing Criteria shall be established
by the Joint Steering  Committee and shall be derived from any Annual  Marketing
Plan then in effect.

         1.30 "Net Sales" shall mean the gross sales prices for LeuTech Products
billed  to  customers  (including,   without  limitation,  any  distributors  or
sublicensees)  by a party or by its  Affiliates  less  [INFORMATION  OMITTED AND
FILED  SEPARATELY  WITH THE  COMMISSION  UNDER RULE 24b-2].  Reductions to gross
sales may include  [INFORMATION OMITTED AND FILED SEPARATELY WITH THE COMMISSION
UNDER RULE 24b-2.] It is further  understood  that the amount of any adjustments
to the gross sales of LeuTech  Products  described  in this  Section 1.30 relate
solely to the sale of LeuTech  Products.  Net sales shall in all cases hereunder
be expressed in United  States  dollars  regardless of the currency in which any
sales transaction is made.

         With respect to Net Sales of Product  Units where sales of such Product
Units have been "bundled" with other products  (i.e.,  if a Product Unit is sold
pursuant  to  an  agreement  with  an  independent  customer  specifying,  for a
combination  of  products  and/or  services,   [INFORMATION  OMITTED  AND  FILED
SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2.]

         1.31 "Quarterly Net Sales Report" shall have the meaning ascribed to
such term in Section 2.2(c) below.

         1.32 "Palatin  Indemnitee" shall have the meaning ascribed to such term
in Section 5.6(b) below.

         1.33  "Palatin  Intellectual  Property  Rights" shall mean all of those
intellectual  property  rights of Palatin or any of its Affiliates of any nature
whatsoever (including, without limitation,



<PAGE>


         the Palatin Patent  Rights,  as defined herein below) which are used or
useful in connection with LeuTech(TM) or LeuTech Products.

         1.34 "Palatin Patent Rights" shall mean those patents and  applications
for patent owned by Palatin or any of its  Affiliates or which Palatin or any of
its  Affiliates  has the right to use and which are used or useful in connection
with LeuTech(TM) or LeuTech Products,  as set forth and described (including the
precise nature of Palatin's rights thereto) on Exhibit D attached hereto.

         1.35 "Preferred Stock" shall mean the class of non-voting, subordinated
preferred stock of Palatin to be issued to  Mallinckrodt in accordance  herewith
and in consideration of the payments by Mallinckrodt set forth in Section 5.2(b)
below, which preferred stock shall have those rights and privileges as are fully
described in the certificate of designation attached hereto as Exhibit E.

         1.36  "Pre-Launch  Activities"  shall mean the activities to be carried
out by  Mallinckrodt  to prepare  for the  commencement  of  commercial  sale of
LeuTech  Products in any portion of the Territory  prior to any such  activities
hereunder  that  are  defined  as  Launch  Activities,  which  activities  shall
generally include those listed on Exhibit B attached hereto.

         1.37 "Product Direct Cost" shall have the meaning ascribed to such term
in Section 2.3(f) below.

         1.38  "Product  Sample"  shall mean  Product  Units (as defined  below)
provided to  Mallinckrodt  by Palatin,  at Palatin's  Product  Direct Cost,  for
distribution  to  Mallinckrodt  customers.  Such Product  Samples  shall be used
solely for  marketing  purposes and shall be marked  "Sample not for  Commercial
Sale."

         1.39 "Product  Unit" shall mean one vial  (regardless  of the strength,
concentration or amount of active ingredients  contained therein) of any LeuTech
Product, including (without limitation) those described on Exhibit F hereto that
are  usable  for  the  diagnosis  and  imaging  of  equivocal  appendicitis  and
osteomyelitis  [INFORMATION  OMITTED AND FILED  SEPARATELY  WITH THE  COMMISSION
UNDER RULE  24b-2].  Exhibit F shall be amended from time to time by the parties
in  accordance  with this  Agreement to reflect the  development  of  additional
LeuTech Products based on a LeuTech  Indication other than for the diagnosis and
imaging of equivocal appendicitis or osteomyelitis.

         1.40 "Publishing Party" shall have the meaning ascribed to such term in
Section 7.3(a).

         1.41 "Reviewing  Party" shall have the meaning ascribed to such term in
Section 7.3(a).

         1.42 "Royalty Payment" shall mean the amount to be paid by Mallinckrodt
to Palatin for Net Sales of Product Units,  as further  described and defined in
Section 5.9 below.

         1.43  "SEC"  shall  mean the  United  States  Securities  and  Exchange
Commission.

         1.44  "Suspension  Period" shall have the meaning ascribed to such term
in Section 5.4(e) below.

         1.45  "Territory"  shall  mean  all  of  the  countries  of  the  world
(excluding Europe).

         1.46 [INFORMATION OMITTED AND FILED SEPARATELY WITH THE COMMISSION
UNDER RULE 24b-2].

         1.47 "Wistar Agreement" shall have the meaning ascribed to such term in
Section 9.3(c).

                                    Article 2

                    MARKETING, SALES AND MANUFACTURING RIGHTS

         2.1  Grant  of  License   Rights  by  Palatin   to   Mallinckrodt.   In
consideration of the License Payments  provided for herein Palatin hereby grants
to  Mallinckrodt  and its Affiliates  the exclusive  right and license under the
Palatin Intellectual  Property to (i) use, market,  distribute for sale and sell
LeuTech  Products in the Territory and (ii)  sublicense  the rights set forth in
clause (i) to any third party for  distribution  of LeuTech  Products,  with the
prior  written  consent of  Palatin,  which  consent  shall not be  unreasonably
withheld.  Any such  sublicensee  shall be bound by the terms and  conditions of
this Agreement  (other than any of the provisions of this Agreement  relating to
the Preferred Stock) as if the sublicensee were  Mallinckrodt or its Affiliates,
and shall execute a sublicense  agreement to that effect.  The sublicensee shall
not have any rights  greater  than the rights  granted  Mallinckrodt  under this
Agreement  and shall not be  permitted to  sublicense  to any other party rights
sublicensed from Mallinckrodt. Mallinckrodt agrees to assume full responsibility
for any such  sublicensee's  performance and shall at all times diligently audit
the  performance of any such  sublicensee.  Mallinckrodt  shall promptly  inform
Palatin of any performance  difficulties it discovers or reasonably  anticipates
with  respect  to any  such  sublicensee,  as well as the  actions  Mallinckrodt
intends to take to alleviate or ameliorate  any such  difficulties.  The license
grant  set  forth  in this  Section  2.1  shall  be  deemed  to be  paid-up  and
irrevocable  for so long  as and to the  extent  this  Agreement  is in  effect,
subject only to such limitations as are expressly set forth herein below.

         2.2      Mallinckrodt's Marketing Obligations.

                  (a)  Mallinckrodt  agrees  (for  itself  and on  behalf of its
Affiliates and sublicensees) to exert its best commercial  efforts in the sales,
marketing and distribution of LeuTech Products,  which it shall  conclusively be
deemed to have done with respect to any particular  LeuTech  Product and for any
particular  period if  Mallinckrodt  (and its Affiliates or  sublicensees)  meet
those  Marketing   Criteria  or  other  marketing  and  sales  requirements  and
milestones  established  by  the  Joint  Steering  Committee  and  based  on the
marketing  details set forth in any applicable Annual Marketing Plan approved in
accordance  herewith.  If Mallinckrodt (and its Affiliates or sublicensees) have
properly  addressed  and  promoted  the sales,  marketing  and  distribution  of
applicable  LeuTech Products during any particular period in accordance with the
requirements of any applicable Annual Marketing Plan, then Mallinckrodt (and its
Affiliates or sublicensees) shall be deemed to have met all applicable marketing
obligations  hereunder,  notwithstanding  any failure to achieve  expected gross
revenue levels for one or more LeuTech Products in any particular market if such
shortfall is due primarily to the  occurrence  of market,  economic or technical
circumstances  which are beyond the reasonable  control of Mallinckrodt (and its
Affiliates or  sublicensees).  Mallinckrodt  and its Affiliates or  sublicensees
shall be responsible for the performance of and costs associated with all Launch
Activities and  Pre-Launch  Activities  relative to  preparation  for the sales,
marketing and  distribution of LeuTech  Products,  and shall otherwise engage in
those marketing activities set forth and described in Exhibit B attached hereto.

                  (b) In the event it is the determination of the Joint Steering
Committee  that,  with  respect  to any  particular  period  of time  and in any
substantial  portion of the  Territory,  Mallinckrodt  (and its  Affiliates  and
sublicensees)  have failed to meet any  applicable  Marketing  Criteria or other
marketing  and sales  requirements  and  milestones  contained  in or  developed
jointly  as  a  consequence  of  any  applicable  Annual  Marketing  Plan  under
circumstances  that clearly  warrant the conclusion that  Mallinckrodt  (and its
Affiliates and sublicensees)  have not exerted their best commercial  efforts in
the sale and marketing of LeuTech  Products  then, at Palatin's  option and upon
one hundred twenty (120) days advance written notice to Mallinckrodt  specifying
in detail the manner in which Mallinckrodt (and its Affiliates and sublicensees)
have failed to discharge their marketing obligations under Section 2.2(a) above,
Palatin may terminate or declare to be non-exclusive  some or all of the license
rights granted to Mallinckrodt  pursuant to Section 2.1 above; provided that, if
Mallinckrodt  (and its Affiliates and  sublicensees)  are able  substantially to
cure any failure to meet its (or their)  obligations under Section 2.2(a) to the
reasonable  satisfaction  of all of the members of the Joint Steering  Committee
within such one hundred twenty (120) day period, Palatin will not have the right
to terminate or alter any of Mallinckrodt's license rights hereunder.

                  (c) During  the term of this  Agreement  and for any  calendar
quarter in which  Mallinckrodt (or their  Affiliates or sublicensees)  have made
any sales of Product Units, Mallinckrodt shall, within sixty (60) days after the
end of each such calendar  quarter,  furnish to Palatin a written report showing
Net Sales of Product Units during such quarter  ("Quarterly  Net Sales  Report")
and including the following specific information: (i) total Net Sales of Product
Units broken down into such significant geographical regions as may be specified
by the Joint Steering Committee, and sufficient documentation to demonstrate the
calculation  of Net Sales from gross sales revenue and  applicable  adjustments,
(ii) an indication of the source of any gross revenue  (i.e.,  sales to end-user
customers, sales to distributors, fees or payments from sublicensees,  etc.) and
the calculation of the amount of Net Sales deriving from each source,  (iii) the
exchange  rates used in  determining  Net Sales in United States dollars for any
sales  outside  the  United  States,  (iv) the  estimated  allocated  sales  and
marketing expense incurred by Mallinckrodt  during the period of any such report
in each  specific  Sales Market and in total,  and (v) a comparison of sales and
marketing results against any Marketing  Criteria and Annual Marketing Plan then
in effect.

                  (d) The sales and marketing activities of Mallinckrodt and its
Affiliates  or  sublicensees  shall be subject to the review and approval of the
Joint  Steering  Committee.  To aid in review by the Joint  Steering  Committee,
Mallinckrodt  shall  develop  an annual  sales and  marketing  plan (an  "Annual
Marketing  Plan")  which shall  reasonably  describe  the sales,  marketing  and
distribution  activities to be conducted by  Mallinckrodt  and its Affiliates or
sublicensees  with regard to LeuTech  Products  and which shall  include,  among
other  things,  an annual  budget and a specific  description  of the timing and
nature of any resources to be allocated by  Mallinckrodt  and its  Affiliates to
the sales, marketing and distribution of LeuTech Products, the commissions to be
paid to sales  representatives,  training  programs  to be  provided  for  sales
representatives,  the nature of all  advertising  and  promotional  efforts  and
materials,  the proposed quantity and method of distribution of Product Samples,
and such other  information as the Joint  Steering  Committee  shall  reasonably
determine  to be  necessary.  Mallinckrodt  shall  develop and present the first
Annual  Marketing  Plan at the first  meeting of the Joint  Steering  Committee,
which  initial plan will set forth  Mallinckrodt's  overall  marketing  plan and
forecast  assumptions  in such detail as  possible  at this point in time.  Such
initial  plan will be refined  and amended or  supplemented  as, when and to the
extent the Joint Steering  Committee  shall  determine.  Thereafter,  the Annual
Marketing Plan shall be prepared by  Mallinckrodt  no later than sixty (60) days
prior to the  beginning  of each  calendar  or  fiscal  year in which  sales and
marketing activities will occur or are expected to occur in accordance herewith.
In addition,  if Mallinckrodt  receives notice from the Joint Steering Committee
that  government  approval  to market any  LeuTech  Products in a portion of the
Territory  for which such  approval was  previously  unavailable  is  reasonably
expected to occur within one hundred  eighty (180) days,  then within sixty (60)
days after  receipt of such  notice,  Mallinckrodt  will  supplement  any Annual
Marketing  Plan then in effect to include all required  information  relative to
the sales, marketing and distribution of LeuTech Products in any such portion of
the Territory or, if Mallinckrodt's receipt of such notice occurs within six (6)
months  from the end of any  calendar  or fiscal  year for which any  particular
Annual  Marketing  Plan is then in effect,  Mallinckrodt  will  include all such
information  in the Annual  Marketing  Plan to be  prepared  for the  succeeding
calendar or fiscal year. Notwithstanding the immediately preceding sentence, any
changes or supplements  to any Annual  Marketing Plan shall be subject to review
and approval of the Joint Steering Committee.

                  (e)  Mallinckrodt  (on its own  behalf  and on  behalf  of its
Affiliates,   sublicensees,   contract  consultants  or  other   subcontractors)
represents and warrants to Palatin as follows:

                           (i)  there  is  no   claim,   suit,   proceeding   or
         investigation pending or, to the knowledge of Mallinckrodt,  threatened
         against Mallinckrodt or any of its Affiliates,  sublicensees,  contract
         manufacturers, consultants or other subcontractors, which might prevent
         or interfere with Mallinckrodt's performance under this Agreement;

                           (ii) LeuTech and LeuTech  Products  marketed and sold
         hereunder  will not be marketed or sold in violation of any  applicable
         federal,  state or local  law or  regulation,  or  marketed  or sold in
         violation of any agreement (commercial or otherwise),  judgment,  order
         or decree to which any of Mallinckrodt or its Affiliates, sublicensees,
         contract   manufacturers,   consultants  or  other  subcontractors  are
         parties;

                           (iii) neither Mallinckrodt nor any of its Affiliates,
         sublicensees,  contract  consultants or other  subcontractors  (nor any
         employee of any of the foregoing) has been  disqualified or debarred by
         any governmental authority for any purpose;

                           (iv)  neither  Mallinckrodt  nor any of its  contract
         consultants or other  subcontractors (nor to the best of Mallinckrodt's
         knowledge any employee of any of the foregoing)  have been charged with
         or convicted under federal law for conduct relating to the marketing or
         sale of any drug product under the Generic Drug Enforcement Act of 1992
         or under any other relevant statute, law or regulation;

                           (v)   Mallinckrodt   and   any  of  its   Affiliates,
         sublicensees,  contract  consultants and other  subcontractors (and any
         employee of any of the  foregoing)  will treat  LeuTech  Products as an
         important product in the same manner  Mallinckrodt,  its Affiliates and
         sublicensees traditionally market their important products for purposes
         of  Mallinckrodt's  pre-marketing,  marketing,  sales and  distribution
         efforts  and   expenditures.   Mallinckrodt's   marketing,   sales  and
         distribution efforts regarding LeuTech Products shall place emphasis on
         all relevant  clinical  indications of LeuTech (covered by the scope of
         this Agreement),  market segments and appropriate  geographical regions
         in the Territory;

                           (vi)   Mallinckrodt   and  any  of  its   Affiliates,
         sublicensees,  contract  consultants and other  subcontractors (and any
         employee  of any of the  foregoing)  will  provide  an  adequate  sales
         organization  and facilities to assure  adequate sales  representation,
         representation,  prompt handling of inquiries and orders, and attention
         to customer service requirements for LeuTech Products in support of the
         activities described herein;

                           (vii)   Mallinckrodt   and  any  of  its  Affiliates,
         sublicensees,  contract  consultants and other  subcontractors (and any
         employee of any of the foregoing)  will provide  support and assistance
         in  establishing  efficient  communications  between  Mallinckrodt  and
         Palatin for shipping  information,  invoicing,  complaints and customer
         relations  information  including  support  of  computer  communication
         systems for information flow; and

                           (viii)   Mallinckrodt  and  any  of  its  Affiliates,
         sublicensees,  contract  consultants and other  subcontractors (and any
         employee of any of the  foregoing)  will provide  sales order entry and
         customer service.

                  (f)  Palatin,  through  its  employees,  consultants  or other
representatives,  will have the right,  during  normal  business  hours and upon
advance  arrangements with  Mallinckrodt,  and no more often than quarterly,  to
inspect the marketing and sales and other related operations of Mallinckrodt and
its Affiliates,  sublicensees,  contract  consultants or other subcontractors to
determine  whether  or  not  Mallinckrodt  is  complying  in all  respects  with
obligations and performance for which it is responsible hereunder. Palatin shall
give  reasonable  advance  notice to  Mallinckrodt  of any such  inspection  and
Mallinckrodt  shall have the right to have a representative  present at all such
inspections.  Palatin  warrants  that all such  inspections  and audits shall be
carried  out in a  manner  calculated  not to  unreasonably  interfere  with the
audited party's conduct of business.  Further, Palatin agrees to comply with all
of the audited  party's  safety and security  requirements  during any visits to
such audited party's facilities.

         2.3      Manufacturing and Supply of the LeuTech Products.

                  (a)  Palatin  (either  itself or  through  the  efforts of its
contract   manufacturers,   consultants  or  other   subcontractors)   shall  be
responsible  for  manufacturing  Product  Units at the  required  quality and in
quantities  sufficient  for  preclinical  and  clinical  development  during the
Development  Phase with  respect to any LeuTech  Product  and in any  particular
portion  of the  Territory  until  the  termination  or  expiration  of any such
Development  Phase.  All costs  incurred  by  Palatin  in  connection  with this
subsection (a) shall be deemed  Development  Costs and subject to the provisions
of Section 5.7(b) hereof.

                  (b)  Prior  to the  termination  or  expiration  of  any  such
Development Phase, Palatin (either itself or through the efforts of its contract
manufacturers, consultants or other subcontractors) shall be responsible for (i)
the design,  testing and scale-up of the LeuTech Products manufacturing process,
(ii)  manufacturing  Product  Units at the  required  quality and in  quantities
sufficient for any further and final development  efforts that may be necessary,
(iii)  providing  documentation  regarding the  manufacture of LeuTech  Products
needed to secure the relevant governmental  approvals to market and sell LeuTech
Products in any portion of the Territory,  and (iv)  arranging for  pre-approval
and/or  routine  establishment  inspections  with respect to its  facilities (or
those of its contract  manufacturers or other  subcontractors) that are and will
be manufacturing  LeuTech Products.  All costs incurred by Palatin in connection
with this  subsection (b) shall be deemed  Development  Costs and subject to the
provisions of Section 5.7(b) hereof.

                  (c)  Mallinckrodt  will submit to Palatin,  in writing  within
sixty (60) days of the date of this  Agreement,  a  non-binding  forecast of the
anticipated  amounts of its orders for  finished  Product  Units of LeuTech  for
diagnosing and imaging  equivocal  appendicitis and  osteomyelitis  Products for
sale and  distribution  in North  America  during  each of the  first  two years
following  approval of the  marketing  and sale of such LeuTech  Products by the
FDA.  After such  approval  is  obtained,  Mallinckrodt  will  submit to Palatin
updated  and  non-binding  forecasts  on a  rolling  quarterly  basis.  Under no
circumstances  whatsoever  shall any forecasts made hereunder be deemed to be an
order  for  the  purchase  of  Product  Units  of  any  LeuTech  Products,   but
Mallinckrodt will at all times exercise  reasonable care that such forecasts are
as accurate as possible under the applicable facts and circumstances.

                  (d) Subject to the  provisions  of  subsection  (f) and (g) of
this Section 2.3, upon completion of the Development Phase for a LeuTech Product
in any  portion  of the  Territory,  and  for so long  as  Mallinckrodt  and its
Affiliates  retain any portion of the license rights granted pursuant to Section
2.1 above with respect to any such  portion of the  Territory,  Palatin  (either
itself or through  the efforts of its  contract  manufacturers,  consultants  or
other  subcontractors)  will be responsible for supplying  Mallinckrodt  and its
Affiliates with such commercial  quantities of LeuTech  Products as Mallinckrodt
and its Affiliates  shall require to carry out their  obligations  under Section
2.2 above,  including any  quantities of pre-launch  commercial  inventories  of
LeuTech  Products the parties  agree should be produced.  Mallinckrodt,  for its
part,  agrees to pay Palatin,  for each Product Unit delivered to its facilities
by  Palatin  (or by its  contract  manufacturers  or other  subcontractors)  and
accepted by  Mallinckrodt  in accordance with provisions set forth below in this
Section 2.3, an amount equal to the Transfer  Price,  as determined  pursuant to
Section 1.46 above.

                  (e)      [INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                           COMMISSION UNDER RULE 24b-2].

                  (f)      [INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                           COMMISSION UNDER RULE 24b-2].

                  (g)      [INFORMATION OMITTED AND FILED SEPARATELY WITH THE
                           COMMISSION UNDER RULE 24b-2].

                  (h) Although  Palatin shall have the right to subcontract  any
or  all  of  its   responsibilities   under  this  Section  2.3  to  a  contract
manufacturer,  consultant  or other  subcontractor,  Palatin  shall at all times
diligently audit the performance of any such  subcontractor  hereunder and shall
promptly inform  Mallinckrodt  of any  performance  difficulties it discovers or
reasonably  anticipates with respect to any such  subcontractor,  as well as the
actions   Palatin   intends  to  take  to  alleviate  or  ameliorate   any  such
difficulties.  Notwithstanding any other provision herein, it is understood that
Palatin  shall at all  times be fully  responsible  for the  performance  of any
contract  manufacturers,  consultants  or  other  subcontractors  to whom it may
delegate any of its responsibilities or performance under this Section 2.3. Upon
discovery by Palatin of an actual or anticipatory  breach by any of its contract
manufacturers or  subcontractors  of their  obligations to produce Product Units
and upon their failure, within a reasonably short period (in any event no longer
than sixty (60) days), to cure or remove the threat of any such breach,  Palatin
will commence all necessary steps to identify and qualify an alternate  supplier
to replace such contract  manufacturers  or  subcontractors  and will diligently
pursue all approvals  necessary to qualify such suppliers and resume  production
at appropriate levels and/or in an appropriate manner. In the event that Palatin
fails to discharge its obligations pursuant to this subsection (h), Mallinckrodt
shall have the right to  enforce  Palatin's  rights  under and  pursuant  to any
contracts   Palatin  may  have  with  its   contract   manufacturers   or  other
subcontractors  and Palatin  shall take all actions  necessary  and  possible to
ensure that Mallinckrodt will be able fully to exercise such rights.

                  (i) If  Mallinckrodt  at any time cancels a purchase order for
Product Units, then  Mallinckrodt  shall pay to Palatin a cancellation fee equal
to one hundred  percent (100%) of the Direct Product Cost incurred by Palatin in
accordance with such purchase order less such amount of Direct Product Cost with
respect to such  purchase  order that has already been paid by  Mallinckrodt  to
Palatin.  Payment of any such  cancellation fee shall be made within thirty (30)
days of  submission  of an  invoice  detailing  such  Direct  Product  Costs and
providing such support documentation and material as Mallinckrodt may reasonably
deem necessary. Any amounts not paid by Mallinckrodt within such thirty (30) day
period  shall  accrue  interest at an annual rate of eight  percent  (8%) on the
unpaid balance due until paid.

                  (j) The  manufacture  of Product  Units by Palatin  (or by its
contract   manufacturers,   consultants   or  other   subcontractors)   will  be
accomplished in accordance with all applicable  laws,  rules and regulations and
all   manufacturing   shall  be  performed  in  accordance   with  current  Good
Manufacturing Practices ("cGMP") as defined by the FDA.

                  (k) At the time of delivery of Product  Units,  Palatin  shall
supply to  Mallinckrodt a certificate of analysis for such Product Units setting
forth an  analysis  of the  Product  Units  in  question  as to each  applicable
specification. If Mallinckrodt determines that any Product Units it has received
are  not in  conformance  with  any one or more  applicable  specifications  for
Product Units to be supplied by Palatin to Mallinckrodt (hereinafter referred to
as a  "Defective  Product"),  then  Mallinckrodt  may reject any such  Defective
Product within thirty (30) days of delivery of such Product.  At the time of any
such  rejection,  Mallinckrodt  shall  provide  Palatin  with a  written  notice
describing   in  detail  the   circumstances   surrounding   the  rejection  and
Mallinckrodt's  reasons  therefor.  If  Mallinckrodt  rejects any such Defective
Product it will,  at Palatin's  option,  return the Product Units in question to
Palatin (or to any contract  manufacturer or other  subcontractor  Palatin shall
specify),  or  destroy  or  dispose  of them in the  least  expensive  and  most
environmentally  sound  manner,  or hold them in  quarantine  at a  Mallinckrodt
facility,  all at Palatin's  cost (subject to any other  relevant  provisions of
this  subsection  (k)).  If  Mallinckrodt  rejects any Defective  Product,  then
Palatin  reserves the right to retest or reexamine  such  Defective  Product for
conformity with specifications by an independent  laboratory or other consultant
mutually agreed upon by both parties. If such testing or reexamination  confirms
that the Product Units meet the  applicable  specifications,  Mallinckrodt  must
accept the Product  Units,  Mallinckrodt  must pay any charges and  expenses for
retesting or  reexamination  by such third party,  and any costs associated with
Mallinckrodt's  previous  rejection  of any such  Product  Units will be for the
account  and expense of  Mallinckrodt.  Otherwise,  the  charges for  retesting,
reexamination,  return,  destruction  and/or quarantine will be paid by Palatin,
and,  whether or not Palatin opts to retest or  reexamine  Product that has been
rejected by Mallinckrodt,  Palatin will replace all Defective Product at no cost
to Mallinckrodt.

                  (l) Palatin (and its contract  manufacturers,  consultants and
other  subcontractors)  will  comply  with all  federal,  state and local  laws,
regulations and standards  applicable to production of LeuTech  Products and the
performance  of any  obligations  for which  Palatin is  responsible  hereunder.
Palatin will promptly furnish  Mallinckrodt  with pertinent  portions of all FDA
inspection reports and related correspondence  directly related to and affecting
performance hereunder (including all such reports and correspondence relating to
its contract  manufacturers,  consultants or other  subcontractors)  as and when
such reports and correspondence become available to Palatin. Palatin will notify
Mallinckrodt  promptly of (i) any warning (including any FDA Form 483 or warning
letter), citation, indictment, claim, lawsuit or proceeding issued or instituted
by any federal,  state or local governmental entity or agency against Palatin or
any  of  its   Affiliates,   contract   manufacturers,   consultants   or  other
subcontractors,  (ii) any  revocation of any license or permit issued to Palatin
or  any  of  its  Affiliates,  contract  manufacturers,   consultants  or  other
subcontractors,  to the extent that any such occurrence  described in clause (i)
or (ii)  relates  directly  to  performance  for which  Palatin  is  responsible
hereunder.

                  (m) Palatin  (on its own behalf and on behalf of its  contract
manufacturers,  consultants or other subcontractors)  represents and warrants to
Mallinckrodt as follows:

                  (i)  All  Product  Units  supplied  to  Mallinckrodt  and  its
         Affiliates hereunder will be properly and safely packaged as reasonably
         required by the applicable BLA.  Palatin will be responsible to provide
         all vials,  boxes and other packaging  materials required by Palatin to
         perform its  obligations  hereunder  (i.e.,  these are  included in the
         Transfer Price to be paid by Mallinckrodt).

                  (ii)  Palatin  currently  has access to, and during the entire
         term  hereof  will make all  reasonable  efforts to ensure that it will
         continue  to have  access to,  sufficient  supplies  of raw  materials,
         utilities, container/closure systems, packaging materials and all other
         required items to perform the services required of it hereunder without
         interruption.

                  (iii) Palatin shall be responsible (through the efforts of its
         contract  manufacturers,  consultants and other subcontractors) for all
         process,  cleaning and methods  validation,  stability studies or other
         tests and  procedures  necessary  for the  manufacture  and  release of
         finished  Product  Units  hereunder  in  accordance  with  cGMP  and in
         accordance with the requirements of the relevant manufacturing process.
         Complete and accurate  documentation of all validation data,  stability
         testing data, batch records, quality control and laboratory testing and
         any other data required under cGMP or other FDA requirements,  or under
         any similar  requirements of the relevant  regulatory  framework of any
         other country (as such  requirements may be applicable),  in connection
         with  the  supply  of  finished   Product  Units   hereunder  shall  be
         maintained,   and  such  records  shall  be  available  for  review  by
         Mallinckrodt on reasonable advance notice.

                  (iv) All Product  Units  produced and sold  hereunder  will be
         produced in compliance with cGMPs applicable to LeuTech  Products,  and
         will meet all applicable specifications.

                  (v)  There is no  claim,  suit,  proceeding  or  investigation
         pending or, to the knowledge of Palatin,  threatened against Palatin or
         any   of  its   Affiliates,   sublicensees,   contract   manufacturers,
         consultants or other  subcontractors,  which might prevent or interfere
         with Palatin's performance under this Agreement.

                  (vi) Neither Palatin nor any of its Affiliates,  sublicensees,
         contract manufacturers, consultants or other subcontractors (nor to the
         knowledge  of Palatin any  employee of any of the  foregoing)  has been
         disqualified or debarred by the FDA for any purpose.

                  (vii) Neither Palatin nor any of its Affiliates, sublicensees,
         contract  manufacturers,  consultants or other  subcontractors  (nor to
         Palatin's  knowledge  any employee of any of the  foregoing)  have been
         charged with or convicted under federal law for conduct relating to the
         development or approval, or otherwise relating to the regulation of any
         drug product  under the Generic Drug  Enforcement  Act of 1992 or under
         any other relevant statute, law or regulation.

                  (viii) Product Units sold hereunder will not be:

                                    (A)     in  violation of Sections 5 or 12 of
                                            the Federal Trade  Commission Act or
                                            improperly  labeled under applicable
                                            Federal   Trade   Commission   Trade
                                            Practice Rules, as and to the extent
                                            applicable hereunder,

                                    (B)      adulterated  or  misbranded  within
                                             the  meaning of the  federal  Food,
                                             Drug and Cosmetic  Act, as amended,
                                             or  within   the   meaning  of  any
                                             applicable  state or municipal  law
                                             in   which   the   definitions   of
                                             adulteration  and  misbranding  are
                                             substantially  identical with those
                                             contained in the federal Food, Drug
                                             and Cosmetic Act, or articles which
                                             may not  under  the  provisions  of
                                             Sections  404 or 505 of said Act be
                                             introduced into interstate commerce
                                             or    which     may    not    under
                                             substantially similar provisions of
                                             any  state  or  municipal   law  be
                                             introduced into commerce,

                                    (C)     in  violation  of Section 351 of the
                                            Public   Health   Service   Act,  as
                                            amended,   as  and  to  the   extent
                                            applicable hereunder,

                                    (D)     manufactured  in  violation  of  any
                                            applicable  federal,  state or local
                                            law, rule or regulation, or

                                    (E)     manufactured  in  violation  of  any
                                            agreement (commercial or otherwise),
                                            judgment,  order or  decree to which
                                            any  of  Palatin  or  its   contract
                                            manufacturers,  consultants or other
                                            subcontractors are parties.

                  (n) Mallinckrodt,  through its employees, consultants or other
representatives,  will have the right,  during  normal  business  hours and upon
advance arrangement with Palatin,  and no more often than quarterly,  to inspect
the  manufacturing  and other  related  operations  of Palatin and its  contract
manufacturers,  consultants or other  subcontractors to determine whether or not
Palatin is complying in all respects with  obligations and performance for which
it is responsible  hereunder.  Mallinckrodt shall give reasonable advance notice
to Palatin of any such  inspection  and  Palatin  shall have the right to have a
representative  present at all such inspections.  Mallinckrodt warrants that all
such  inspections and audits shall be carried out in a manner  calculated not to
unreasonably  interfere with the audited party's  conduct of business.  Further,
Mallinckrodt  agrees  to  comply  with all of the  audited  party's  safety  and
security requirements during any visits to such audited party's facilities.

                  (o) If either  party  reasonably  decides to or is required to
initiate a product recall,  stock recovery,  withdrawal or field correction with
respect  to, or if there is any  governmental  seizure  of,  any  Product  Units
supplied hereunder which action is due, in whole or in part, to (i) a failure of
any of such  Product  Units  manufactured  hereunder  to conform  to  applicable
specifications  (including,  without  limitation,  any such Product  Units being
adulterated or  misbranded),  or any warranty or other  requirement set forth in
this  Agreement,  (ii) the  failure  of either  party (or any of their  contract
manufacturers,  consultants,  subcontractors or sublicensees) to comply with any
applicable law, rule, regulation,  standard,  court order or decree or (iii) the
negligent  or  intentional  wrongful  act or omission of either party (or any of
their contract  manufacturers,  consultants,  subcontractors or sublicensees) in
connection with  performance  hereunder,  such party will notify the other party
promptly of the details regarding such action, including providing copies of all
relevant documentation concerning such action. The party so notified will assist
the party  initiating any such action in investigating  any such situation.  All
regulatory contacts that are made and all activities concerning seizure, recall,
stock recovery,  withdrawal or field  correction will be jointly  coordinated by
Mallinckrodt  and Palatin,  regardless of which party  initiated or suffered any
applicable  action.  If any  such  recall,  stock  recovery,  withdrawal,  field
correction  or seizure  occurs due solely to (i) a failure of any Product  Units
provided hereunder to conform to applicable specifications  (including,  without
limitation,  any such Product  Units being  adulterated  or  misbranded)  or any
warranty or other  requirement set forth in this Agreement,  (ii) the failure by
Palatin (or any of their contract manufacturers,  consultants, subcontractors or
sublicensees)  to comply with any applicable law, rule,  regulations,  standard,
court order or decree or (iii) the  negligent  or  intentional  wrongful  act or
omission  of  Palatin  (or  any  of  its  contract  manufacturers,  consultants,
subcontractors  or  sublicensees)  in connection  with the production of LeuTech
Products  hereunder,  then  Palatin  shall bear the full cost and expense of any
such seizure, recall, stock recovery, withdrawal or field correction and, to the
extent Mallinckrodt has paid any expenses, it shall be entitled to reimbursement
by deduction of such costs and expenses  from the amount of any Royalty  Payment
otherwise  payable to Palatin  hereunder in  accordance  with Section 5.9,  such
deduction to occur with respect to the Royalty  Payment payable for the calendar
quarter in which any such recall, stock recovery,  withdrawal,  field correction
or  seizure  occurs.  If both  Palatin  and  Mallinckrodt  (or  either  of their
subcontractors, sublicenses or Affiliates) contribute to the cause of a seizure,
recall,  stock recovery,  withdrawal or field correction,  the cost and expenses
thereof will be shared in proportion to each party's contribution to the problem
(as determined by the Joint Steering  Committee or, in the absence of a decision
by the Joint Steering Committee,  in accordance with the procedures set forth in
Section 10.6  herein),  and any amount of cost and expense that is the liability
and responsibility of Palatin and is paid by Mallinckrodt shall be reimbursed to
Mallinckrodt  by deduction  from any Royalty  Payment due Palatin in  accordance
with the  procedures set forth in the  immediately  preceding  sentence.  If any
recall,  stock  recovery,  withdrawal,  field  correction or seizure  occurs due
solely to the failure of Mallinckrodt,  its Affiliates,  sublicensees,  contract
consultants or other  subcontractors  to comply with any  applicable  law, rule,
regulation,  standard,  court order or decree or the  negligent  or  intentional
wrongful  act  or  omission  of  Mallinckrodt  in  connection  with  performance
hereunder,  then  Mallinckrodt  shall  bear the full  cost and  expense  of such
seizure, stock recovery, withdrawal or field correction.

                  (p)   Mallinckrodt   shall  be  responsible   for  monitoring,
investigating   and  reporting  all  customer   complaints  and  Adverse  Events
concerning  the LeuTech  Products.  Palatin shall perform in a timely manner all
product testing in connection  with such customer  complaints and Adverse Events
as  requested by  Mallinckrodt.  Mallinckrodt  shall  prepare and submit in full
compliance with applicable  federal  statutes and regulations the Annual Adverse
Event  Report  required  to be  submitted  to the FDA and to prepare  and submit
within the Territory in full  compliance  with applicable law all other required
regulatory filings relating to customer complaints and Adverse Events.

                  (q) In addition to any rights  Mallinckrodt may otherwise have
hereunder (including, without limitation, any rights to terminate this Agreement
pursuant to Section 9.2 below),  in the event  Palatin is in material  breach of
any  obligations  under this Section 2.3 for which it is  responsible  and which
material breach places  Mallinckrodt in reasonable and imminent  apprehension of
Palatin's  continued  ability or  intention to supply  Product  Units of LeuTech
Products  to  Mallinckrodt  hereunder,  if such  breach is caused by the acts or
omissions  to act of Palatin,  and such  breach is not cured  within one hundred
twenty (120) days after notice thereof is given by Mallinckrodt to Palatin, then
Mallinckrodt   shall  have  the   irrevocable   right  to  manufacture  or  have
manufactured by any one or more contract  manufacturers  all of its requirements
for Product  Units of LeuTech  Products  for the  duration of any of its license
rights  granted  hereunder.  Mallinckrodt  may exercise the  foregoing  right by
giving  notice to Palatin of its intent to do so at any time after the elapse of
the one hundred  twenty (120) day cure period if, during such time,  Palatin has
been unable  substantially to cure any and all material breaches of this Section
2.3 to the reasonable  satisfaction of Mallinckrodt.  In the event  Mallinckrodt
exercises such right of manufacture,  Palatin shall, as soon after notice of the
exercise  of such right as  possible  (but in no event later than six (6) months
thereafter),  transfer  to  Mallinckrodt  such  contractual  rights  (i.e.,  its
contracts with all third party  contract  manufacturers,  consultants  and other
subcontractors)  and such rights to its intellectual  property and such know-how
as may  be  necessary  to  enable  Mallinckrodt  or a  third  party  or  parties
designated  by  Mallinckrodt  to  manufacture  LeuTech  Products  in  sufficient
quantity to meet Mallinckrodt's  requirements  therefor. Any repeated failure by
Palatin to supply the full amount of any Product Units  ordered by  Mallinckrodt
in  accordance  with the  provisions  hereof as and when such Products are to be
delivered  in  accordance  with any  accepted  purchase  order shall be deemed a
material breach for purposes hereof.

                  (r) Upon the written  request of  Mallinckrodt,  Palatin shall
permit an independent public accountant  selected by Mallinckrodt and acceptable
to Palatin,  which acceptance shall not be unreasonably  withheld or delayed, to
have access  during normal  business  hours to such records of Palatin as may be
reasonably necessary to verify (i) the accuracy of any changes in Transfer Price
made by Palatin  pursuant to Section  1.46 in respect of any  calendar  year (or
portion  thereof)  ending not more than twelve (12) months  prior to the date of
such request and (ii) the accuracy of any billings (and all credits, refunds and
similar  adjustments  thereto)  by Palatin to  Mallinckrodt  pursuant to Section
2.3(f) for the payment by  Mallinckrodt  of its  portion of Product  Direct Cost
applicable to any purchase order for Product Units made and accepted  hereunder.
Subject  to  other  relevant   provisions  of  this  subsection  (r),  all  such
verifications shall be conducted at Mallinckrodt's  expense, not more than twice
in each calendar year and no quarterly  period may be audited more than once. In
the event such  Mallinckrodt  representative  concludes  (i) that changes in the
Transfer Price were not made in accordance with the requirements of Section 1.46
or (ii) that the  amount of Product  Direct  Cost (and all  credits,  refunds or
similar adjustments  thereto) owed by or accruing to the benefit of Mallinckrodt
were not correctly stated and therefore, if either or both of clause (i) or (ii)
of  this  sentence  is  true  and in  such  representative's  determination  the
aggregate  amount of the Transfer Price charged to  Mallinckrodt  by Palatin for
Product Units during the audited  period is greater than the aggregate  Transfer
Price that should have been charged, then, at the option of Mallinckrodt, either
(x)  Palatin  will  refund  the  applicable   amount  to   Mallinckrodt  or  (y)
Mallinckrodt  may  offset  any  amount  due  against  amounts  otherwise  due by
Mallinckrodt to Palatin hereunder pursuant to Section 2.3(f),  Section 2.3(g) or
Section 5.8(a),  in any case such amount to include  interest at the annual rate
of eight percent (8%) on any amounts due Mallinckrodt, measured from the date on
which such payment  should have been made.  In the event that, if either or both
of  clause  (i) or (ii) of the  immediately  preceding  sentence  is true,  such
Mallinckrodt  representative concludes that the amount of the aggregate Transfer
Price  charged to  Mallinckrodt  by Palatin for Product Units during the audited
period is less than the aggregate  Transfer Price that should have been charged,
then  Mallinckrodt  will pay the  additional  amount to  Palatin,  plus  accrued
interest  at the annual  rate of eight  percent  (8%) on any amounts due Palatin
measured from the date on which such payment  should have been made. Any amounts
due pursuant to this  subsection  (r) shall be paid (unless  amounts are owed to
Mallinckrodt  and it  notifies  Palatin  of its  decision  to be  paid by way of
offset) by the party owing such  payment  within  fifteen  (15) days of the date
Mallinckrodt delivers to Palatin such representative's written report concerning
any Transfer Price audit period,  unless (in the event any such report reveals a
Transfer Price overcharge by Palatin) Palatin shall have a good faith dispute as
to the conclusions set forth in such written report, in which case Palatin shall
provide  written notice to  Mallinckrodt  within such fifteen (15) day period of
the nature of its  disagreement  with such  written  report and, if such written
notice has been given,  Palatin may withhold  payment of the disputed portion of
any such amount due and Mallinckrodt shall not be entitled to exercise any right
of offset with respect to any disputed  amount.  If Palatin has provided written
notice to Mallinckrodt that if disputes any of  Mallinckrodt's  representative's
conclusions,  the  parties  shall  thereafter,  for a period of sixty (60) days,
attempt in good faith to resolve  such  dispute  and if they are unable to do so
then the matter will be submitted  for  resolution  in  accordance  with Section
10.6.  The  fees  charged  by  Mallinckrodt's  representative  shall  be paid by
Mallinckrodt  unless the audit discloses that any aggregate Transfer Prices paid
by Palatin for the audited  period were  greater by more than five  percent (5%)
than the amount that should have been charged for the audited  period,  in which
case  Palatin  shall  pay the  reasonable  fees  and  expenses  charged  by such
representative. Mallinckrodt agrees that all information subject to review under
this subsection (r) is confidential and that it shall cause its  representatives
to retain all such information in confidence in accordance with the requirements
of Article 7 below.

                                    Article 3

                               PRODUCT DEVELOPMENT

         3.1      Conduct of the Development Program and Development Generally.

                  (a) Palatin will be  responsible  for performing all remaining
tasks  associated  with the  development of LeuTech  Products for diagnosing and
imaging  equivocal   appendicitis  and  osteomyelitis  in  connection  with  the
Development  Program,  including  without  limitation  the design and conduct of
clinical  trials  and the  preparation  and  filing of all  required  regulatory
submissions.   It   is   understood   that   Mallinckrodt's   entire   financial
responsibility  with  respect  to  the  development  activities  comprising  the
Development  Program are the Development  Payments to be made by Mallinckrodt to
Palatin in accordance  with Section  5.7(b).  In addition to its  performance of
certain tasks in conjunction  with the  Development  Program,  Palatin will also
perform all remaining  tasks  associated  with the  development  of such LeuTech
Products as commercial  products fully available for marketing and sale in every
portion of the Territory, including without limitation the design and conduct of
clinical  trials  and the  preparation  and  filing of all  required  regulatory
submissions,  such development  activities to be conducted subject to the review
and  approval  of the  Joint  Steering  Committee  and at the joint  expense  of
Mallinckrodt  and Palatin,  as the Joint Steering  Committee shall determine (in
Mallinckrodt's  case and for the  avoidance  of doubt,  any such  expense  to be
additional to the  Development  Payments to be made in  accordance  with Section
5.7(b)). When available and subject to the Joint Steering Committee, Palatin may
use the resources of  Mallinckrodt  or its Affiliates to conduct the development
activities described in the preceding sentence or, subject to the concurrence of
the Joint  Steering  Committee,  Palatin may  utilize  the  services of contract
research organizations for development  activities.  In addition, the nature and
scope of all future development activities relative to LeuTech Products that may
be developed outside the Development  Program will be determined by Mallinckrodt
and Palatin and any such development activities will be conducted subject to the
review and approval of the Joint Steering  Committee and at the joint expense of
Mallinckrodt and Palatin, as the Joint Steering Committee shall determine.

                  (b) Notwithstanding the responsibility of Palatin with respect
to the Development  Program as described in the first sentence of subsection (a)
set forth  immediately  above, the development of LeuTech Products  generally by
Palatin  during the term hereof  shall be subject to review and  approval by the
Joint Steering  Committee  established  hereunder.  The Joint Steering Committee
will  work  on a  regular  basis  with  individuals  designated  by  Palatin  to
coordinate the Development  Program and any future  development of other LeuTech
Products. In the course of development of LeuTech Products, Palatin will provide
Mallinckrodt's   representatives   on  the  Joint  Steering  Committee  (or  any
individuals  whom such  representatives  shall  designate) with reasonable prior
notice  of  all  meetings  or  conferences  between  Palatin's   representatives
(including  any  contract  research   organizations,   contract   manufacturers,
consultants and other  subcontractors)  and any regulatory  authorities that are
concerned  with the securing of approval for the  marketing  and sale of LeuTech
Products as commercial  products and will give  Mallinckrodt the right to have a
representative attend all such meetings and conferences.

                  (c) At the quarterly meeting of the Joint Steering  Committee,
during any  Development  Phase  with  respect  to any  portion of the  Territory
(including  with respect to the  Development  Program),  Palatin  shall  provide
Mallinckrodt  with reasonably  detailed  reports which shall describe  Palatin's
progress with respect to its development efforts under this Agreement (including
a comparison of development  efforts and progress with the  requirements  of any
Annual  Development  Plan then in  effect),  detail  any  Adverse  Events to the
LeuTech  Products under  development and shall provide the available  results of
all studies and trials  conducted  by or under the  supervision  of Palatin with
respect to LeuTech Products.  In addition,  at such quarterly  meetings and with
respect to the Development  Program,  Palatin shall provide  Mallinckrodt with a
reasonably  detailed report which shall describe Palatin's progress in achieving
its  Development  Criteria set forth in Section 3.2(a) below and the Development
Costs incurred by Palatin during the preceding calendar quarter.

                  (d) Each party agrees to make its  employees  and those of its
subcontractors and consultants  reasonably  available at their respective places
of  employment  to consult  with the other  party on issues  arising  during the
Development  Phase with respect to the  development  of any LeuTech  Product and
with respect to any portion of the  Territory,  in  connection  with any request
from any regulatory  agency,  including all such requests related to regulatory,
scientific, technical, clinical testing and marketing issues.

                  (e)  Representatives  of  Mallinckrodt  may,  at any  time  as
Mallinckrodt may reasonably request,  with the prior approval of Palatin,  which
approval shall not be unreasonably  withheld or delayed,  visit the sites of any
clinical trials or other experiments being conducted by Palatin or by any of its
contract  research   organizations,   consultants  or  other  subcontractors  in
connection  with the  Development  Program or any future  development of LeuTech
Products.   Palatin  shall  cause  appropriate   individuals   involved  in  the
Development  Program  or  any  future  development  of  LeuTech  Products  to be
reasonably available for consultation with Mallinckrodt.

                  (f) The  Development  Program  or any  future  development  of
LeuTech Products shall be conducted under and pursuant to an annual  development
plan (the "Annual Development Plan") which shall reasonably describe the work to
be  conducted  by or under  the  supervision  of  Palatin  with  respect  to the
development of LeuTech  Products.  The Annual  Development  Plan shall contain a
budget  including,  with respect to the  Development  Program,  estimates of the
aggregate Development Costs to be incurred during the applicable year. The first
Annual  Development  Plan shall be presented  at the first  meeting of the Joint
Steering Committee.  Thereafter,  the Annual Development Plan for any given year
will be prepared by Palatin and  presented  to the Joint  Steering  Committee no
later than sixty (60) days prior to the  beginning  of each  calendar  or fiscal
year. Any Annual Development Plan and any changes to any Annual Development Plan
shall be subject to approval by the Joint Steering  Committee in accordance with
procedures set forth herein and, to the extent any such Annual  Development Plan
concerns the Development Program,  shall be subject to the limitations set forth
in Section 5.7(d) hereof.

         3.2      Development Criteria for the Development Program.

                  (a)  In  consideration  of  certain  payments  to be  made  by
Mallinckrodt to Palatin in accordance  generally with the provisions of Sections
5.7 herein below,  Palatin  agrees to employ its best efforts to carry out, in a
complete,  competent and timely  fashion,  its  obligations  to develop  LeuTech
Products in connection  with the Development  Program.  To ensure that Palatin's
development  obligations  hereunder with respect to the Development  Program are
fulfilled,  Palatin shall be subject to the following Development Criteria, each
expressed as a milestone with an associated time requirement:

                                             Milestone        Due  Date

(1)      [INFORMATION  OMITTED AND FILED  SEPARATELY  WITH THE COMMISSION  UNDER
         RULE 24b-2]

(2)      [INFORMATION  OMITTED AND FILED  SEPARATELY  WITH THE COMMISSION  UNDER
         RULE 24b-2]

(3)      [INFORMATION  OMITTED AND FILED  SEPARATELY  WITH THE COMMISSION  UNDER
         RULE 24b-2]

If and as circumstances  warrant, the Development Criteria set forth immediately
above may be amended, but only with the unanimous approval of the Joint Steering
Committee;  provided  that,  if Palatin is unable to achieve  one or more of the
Development  Criteria in a timely fashion due to circumstances  beyond Palatin's
reasonable  control,   Mallinckrodt's  representatives  to  the  Joint  Steering
Committee will not unreasonably  withhold  consent to a reasonable  extension of
time which would allow achievement of the particular milestone(s) in question.

                  (b) Subject only to the last  sentence of  subsection  (a) set
forth  immediately  above,  if Palatin  fails to achieve any of the  Development
Criteria  within the time  specified,  at  Mallinckrodt's  option and  effective
immediately  upon notice by Mallinckrodt to Palatin,  Mallinckrodt may terminate
this Agreement in its entirety; provided that, Mallinckrodt shall be responsible
to pay to Palatin all amounts then unpaid and due Palatin in accordance herewith
through  the  effective  date of such  termination.  In the  event  of any  such
termination  by   Mallinckrodt,   the  license  rights  granted  by  Palatin  to
Mallinckrodt  pursuant  to Section  2.1 above shall  immediately  terminate  and
Mallinckrodt  shall  thereafter  have no further rights to Palatin  Intellectual
Property Rights,  LeuTech or LeuTech Products.  In addition, in the event of any
such termination,  Mallinckrodt will have no further responsibilities to perform
any obligation provided for hereunder (except for any such obligations which, by
their express terms and purposes,  are intended to survive any such termination)
and, specifically and without limitation,  Mallinckrodt shall have no obligation
to pay any portion of any  Development  Costs  relating to any period of time or
any activity occurring after the effective date of such termination.

                                    Article 4

                         MANAGEMENT OF THE COLLABORATION

         4.1      Joint Steering Committee.

                  (a)  A  steering  committee   comprised  of  three  (3)  named
representatives  of Mallinckrodt and three (3) named  representatives of Palatin
(the "Joint  Steering  Committee")  shall be appointed and shall meet as needed,
but not less than once each calendar  quarter.  Such  meetings  shall be at such
times and places and in such form as the members of the Joint Steering Committee
shall agree.  At such  meetings,  the Joint  Steering  Committee will review and
approve the  Development  Program,  any Annual  Development  Plan and any Annual
Marketing  Plan.  A party may change one or more of its  representatives  to the
Joint Steering  Committee at any time.  Members of the Joint Steering  Committee
may be  represented  at any  meeting  by  another  member of the Joint  Steering
Committee,  or by an authorized designee.  Any approval,  determination or other
action  agreed to by a two-thirds  majority of the Joint  Steering  Committee or
their  authorized  designees  present at the relevant Joint  Steering  Committee
meeting  shall be the  approval,  determination  or other  action  of the  Joint
Steering  Committee,  provided  at least two  representatives  of each party are
present at such meeting.

                  (b) The Joint Steering Committee shall initially be chaired by
a Palatin  representative  to the Committee.  The Palatin  representative  shall
serve as the chair of the Joint  Steering  Committee  through and including June
30, 2001. On July 1, 2001, a Mallinckrodt  representative shall become the chair
of the Joint Steering Committee through and including June 30, 2003. Thereafter,
the chair of the Joint Steering  Committee shall rotate between a representative
of Palatin and a representative of Mallinckrodt, with each chair serving for two
(2) years in succession.

                  (c) The Joint Steering  Committee shall keep accurate  minutes
of its  deliberations  which  record  all  proposed  decisions  and all  actions
recommended  or taken.  The chair shall be  responsible  for the  preparation of
draft minutes.  Draft minutes shall be sent to all members of the Joint Steering
Committee  within ten (10) working days after each  meeting.  The draft  minutes
shall be edited by the chair  based on  comments  from the  members of the Joint
Steering  Committee  and shall be  distributed  to the members prior to the next
meeting of the Joint  Steering  Committee for review and final  approval at such
meeting.  All  records  of the Joint  Steering  Committee  shall at all times be
available to both parties.

                  (d) The Joint  Steering  Committee  may delegate its authority
and oversight  responsibility  to any one or more  subcommittees,  each of which
shall  have an equal  number of  members  from  Mallinckrodt  and  Palatin.  The
membership of such  subcommittees  will include at least one member of the Joint
Steering  Committee  appointed by each of Palatin and Mallinckrodt but otherwise
the  parties  are  free to  appoint  such  other  individuals  to  serve  on any
subcommittees  as they desire.  Any  decision on any matter by any  subcommittee
must be  reported  to and  approved  by the  Joint  Steering  Committee  and any
disputes or disagreements  among the members of any subcommittee  that cannot be
resolved by such members shall be referred to the Joint  Steering  Committee for
resolution.

                  (e) All disagreements  within the Joint Steering  Committee as
to matters for which the Joint  Steering  Committee  has the final  authority to
make a decision shall be resolved in accordance with the following procedures:

                           (i)  the   representatives   to  the  Joint  Steering
         Committee  will  negotiate  in good faith for a period of not more than
         sixty (60) days to attempt to resolve the dispute,

                           (ii) if the  representatives  to the  Joint  Steering
         Committee are unable to resolve the dispute  within such sixty (60) day
         period,   then  such   representatives   shall  promptly   present  the
         disagreement  to  the  Chief  Executive  Officer  of  Palatin  and  the
         President  of   Mallinckrodt's   Imaging  Group  or  their   respective
         designees,

                           (iii)  such  executives  shall  meet or  discuss in a
         telephone or video  conference  each party's view and explain the basis
         for such disagreement, and

                           (iv) if such executives  cannot promptly resolve such
         disagreement  within sixty (60) days after such issue has been referred
         to them, then the matter shall be referred to arbitration in accordance
         with the procedures set forth in Section 10.6 below.

                                    Article 5

                   PAYMENTS, PREFERRED STOCK AND COST SHARING

         5.1 License Payments. In consideration of the license rights granted by
Palatin to Mallinckrodt and its Affiliates in accordance with Section 2.1 herein
above,  Mallinckrodt  hereby  agrees to make the following  License  Payments to
Palatin:

         (a)  Mallinckrodt  will pay  [INFORMATION  OMITTED AND FILED SEPARATELY
WITH THE COMMISSION UNDER RULE 24b-2] on and as of the date of execution of this
Agreement,

         (b)  Mallinckrodt  will pay  [INFORMATION  OMITTED AND FILED SEPARATELY
WITH THE  COMMISSION  UNDER  RULE  24b-2.]  within  fifteen  (15) days after the
approval by the FDA of a BLA for any LeuTech  Product  useful for the imaging of
appendicitis, and

         (c)  Mallinckrodt  will pay  [INFORMATION  OMITTED AND FILED SEPARATELY
WITH THE COMMISSION UNDER RULE 24b-2] within thirty (30) days after [INFORMATION
OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2.]

Remittance  of each of the  License  Payments  will be made by wire  transfer of
immediately available United States funds to an account designated by Palatin to
Mallinckrodt  at least  three (3)  business  days prior to the date on which any
such payment is due.

         5.2      Purchase of Palatin Preferred Stock.

                  (a) In  consideration  for the  performance by Mallinckrodt of
its  obligations  hereunder and the payments to be made by  Mallinckrodt  as set
forth immediately below in Section 5.2(b),  Palatin agrees that it will issue to
Mallinckrodt,  on and as of the date of execution hereof, seven hundred thousand
(700,000)  shares of the  Preferred  Stock,  which shares of stock will be, when
issued,  fully  paid  and  nonassessable  (except  for any  amounts  payable  in
accordance with Section 5.2(b) which are not due and payable at the time of such
issuance) and not subject to any  antidilution  rights,  preemptive  rights,  or
rights of first  refusal  of any kind,  except  as set  forth and  described  on
Exhibit G. The shares of Preferred  Stock will have the rights,  preferences and
limitations  set forth on the  certificate  of  designation  attached  hereto as
Exhibit E. Mallinckrodt  represents and warrants that at the time it was offered
the  Preferred  Stock to be acquired by it  hereunder,  it was,  and at the date
hereof it is, an  "accredited  investor"  as  defined in Rule  501(a)  under the
Securities Act of 1933, as amended ("Securities Act").  Mallinckrodt understands
that the shares of  Preferred  Stock  acquired  by it  hereunder  have no public
market  and are not  registered  and  may  not be  sold or  transferred  without
registration or unless an appropriate  exemption from  registration is available
under  applicable  law;  therefore,  Mallinckrodt  understands  that  it  may be
required to retain these shares of Preferred Stock and bear the economic risk of
such  investment  indefinitely.  Mallinckrodt  represents  and warrants  that it
possesses  such  knowledge,  sophistication  and  experience  in  financial  and
business matters as to be able to evaluate the merits and risks of an investment
in the  Preferred  Stock and that it has the  economic  ability to bear the high
degree of risk of such a speculative investment. Mallinckrodt further represents
and warrants  that it is acquiring the shares of Preferred  Stock  hereunder for
its own account and for investment  purposes only, and not with a view to resale
or  distribution  of any kind,  except for such resale or distribution as may be
consistent  with  the  requirements  of  applicable  law.  Mallinckrodt  further
acknowledges that it has been afforded (i) the opportunity to ask such questions
as it has deemed necessary of, and to receive answers from,  representatives  of
Palatin  concerning  the terms and  conditions  of the offering of the Preferred
Stock, and the merits and risks of investing in the Preferred Stock, (ii) access
to  information  about Palatin and  Palatin's  financial  condition,  results of
operations, business, properties,  management and prospects sufficient to enable
it to  evaluate  its  investment,  and (iii)  the  opportunity  to  obtain  such
additional   information   which  Palatin   possesses  or  can  acquire  without
unreasonable  effort or expense that is necessary to make an informed investment
decision with respect to such investment.

                  (b) In  consideration  for the  issuance  by  Palatin of seven
hundred  thousand  (700,000)  shares  of the  Preferred  Stock to  Mallinckrodt,
Mallinckrodt  will pay to Palatin  Thirteen Million Dollars  ($13,000,000).  The
amount to be repaid by Palatin to Mallinckrodt in accordance with Section 5.8(b)
below may be offset against the foregoing purchase price but will not reduce the
deemed actual  purchase price for the Preferred  Stock.  The amount set forth in
the immediately preceding sentence shall be paid on the date of execution hereof
by wire  transfer of  immediately  available  United  States funds to an account
designated by Palatin to Mallinckrodt.

                  (c) It is  understood  that, at any time and from time to time
on or after the fifth (5th)  anniversary  hereof or, if sooner, at any time upon
the  occurrence  of a Change of Control with  respect to Palatin,  and in either
such case effective upon written notice by Mallinckrodt to Palatin, Mallinckrodt
may convert some or all of the shares of  Preferred  Stock  purchased  hereunder
into  fully   paid  and   nonassessable   shares  of  the  Common   Stock  on  a
one-share-for-one-share  basis,  without payment of funds or other consideration
of any kind. Any shares so converted  (i.e.,  Common Shares) may be unregistered
and,  therefore,  subject to such  restrictions  on  transfer as may exist under
applicable  law and the rules and  regulations of the SEC and of any exchange or
association  on which such  securities  may be listed or  traded.  If and to the
extent,  subsequent to conversion of any of the shares of Preferred  Stock being
purchased hereunder, any of the Common Shares owned and held by Mallinckrodt are
unregistered, Mallinckrodt may have to continue to bear the economic risk of its
investment  hereunder for an indefinite period of time, unless and to the extent
the  Common  Shares  are  registered,   unless  an  appropriate  exemption  from
registration is available under applicable law, or until Mallinckrodt  exercises
its rights  under  Sections  5.3 and/or 5.4  below.  It is  understood  that the
700,000 shares of Preferred Stock being acquired by Mallinckrodt  hereunder,  if
it was fully  converted  on and as of the date  hereof into shares of the Common
Stock,  represents an eight percent (8%) interest in the voting capital stock of
Palatin.

                  (d) For so long as  Mallinckrodt  has at  least a two  percent
(2%) ownership  interest of the Common Stock of Palatin  (whether through direct
ownership  of  Common  Stock  or  ownership  of  securities  exercisable  for or
convertible  into  Common  Stock),  Palatin  covenants  that it will  furnish to
Mallinckrodt,  promptly  upon filing,  copies as filed with the SEC or any other
similar regulatory authority of (A) Palatin's annual reports of Form 10-KSB, (B)
Palatin's  quarterly  reports on Form 10-QSB,  (C) Palatin's  current reports on
Form 8-K and (D) all other SEC or other similar  reports  filed  pursuant to the
requirements of applicable law in any jurisdiction.

                  (e) From and  after  the date  hereof  and for so long as this
Agreement  is in effect with respect to any portion of the  Territory,  if, as a
result of (i) the  issuance  and sale by Palatin  of any shares of Common  Stock
(including  the  issuance  of  Common  Stock  upon  exercise  or  conversion  of
securities  exercisable  for or  convertible  into  Common  Stock)  or (ii)  the
issuance by Palatin of any Common Stock or other  securities in connection  with
any stock split,  stock  dividend or other  recapitalization  (any such issuance
described in clauses (i) or (ii) of this sentence  being referred to herein as a
"Dilutive  Event"),  a decrease occurs in the percentage of outstanding  Palatin
Common Stock owned by  Mallinckrodt  (assuming full  conversion of the Preferred
Stock) (the "Mallinckrodt  Ownership"),  then Mallinckrodt shall have the right,
exercisable  as provided  below,  (i) if, at the time of the  occurrence  of the
Dilutive  Event,  the Preferred Stock is not then  convertible,  to receive that
number of shares of Preferred  Stock which,  when converted along with all other
shares of  Preferred  Stock and  combined  with all other shares of Common Stock
then owned by  Mallinckrodt,  would be  required to  preserve  the  Mallinckrodt
Ownership at the same percentage immediately before and after the Dilutive Event
or (ii) if, at the time of the occurrence of the Dilutive  Event,  the Preferred
Stock is then  convertible,  to receive that number of Common Shares which, when
combined with all other shares of Common Stock owned by Mallinckrodt  (including
Common Stock underlying any Preferred Stock then owned by  Mallinckrodt),  would
be  required to  preserve  the  Mallinckrodt  Ownership  at the same  percentage
immediately  before and after the Dilutive  Event.  The foregoing right shall be
exercisable  by  payment  of the  purchase  price  and  delivery  of the  notice
described  below.  The  purchase  price per share of  Preferred  Stock or Common
Stock,  as the case may be,  to be paid by  Mallinckrodt  upon  exercise  of the
foregoing right shall be equal to the  consideration  per share (if any) paid or
to be paid by the person to whom  securities are being issued in connection with
the Dilutive Event. If the  consideration  paid by any such third party for such
securities is other than cash, such  consideration  shall be presumed to be cash
equal to the  fair  market  value  of such  consideration  as  determined  by an
independent  party  acceptable  to both  Mallinckrodt  and Palatin.  The cost of
making such  determination,  if any,  shall be borne by Palatin.  Palatin  shall
provide  written notice to Mallinckrodt of a Dilutive Event within five (5) days
after  the  issuance  of  any  securities  giving  rise  to  the  dilution,  and
Mallinckrodt  shall make its  election  to  purchase  all or any  portion of the
securities which it is entitled to purchase or receive in accordance herewith to
preserve  its  percentage  interest  in the Common  Stock by  written  notice to
Palatin no more than thirty (30) days following its receipt of Palatin's written
notice of a  Dilutive  Event.  Upon  failure  timely to give  written  notice to
Palatin of such election  Mallinckrodt  shall be deemed to have waived its right
to purchase or receive any  additional  securities of Palatin on such  occasion.
Mallinckrodt  shall pay the  purchase  price (if any) for the  securities  it so
elects to purchase or receive  within thirty (30) days  subsequent to its notice
of election to purchase or receive  additional  securities.  It is understood by
the parties hereto that any failure by  Mallinckrodt on any occasion to purchase
or receive  all or some of the  securities  which it is  entitled to purchase or
receive  pursuant to this subsection (e) as a consequence of the occurrence of a
single  Dilutive  Event  shall  not  affect  the right of  Mallinckrodt,  on the
subsequent  occurrence of any different  Dilutive  Event, to purchase or receive
all or any portion of the  securities  which it is then  entitled to purchase or
receive as a consequence of the operation of this subsection (e).

                  (f) In determining the amount of consideration paid to Palatin
for the issuance of Common Stock upon the exercise or conversion of  exercisable
or convertible securities,  all amounts paid to Palatin in consideration for the
issuance of the convertible or exercisable  securities shall be included as part
of the consideration paid.

                  (g) The  provisions of the foregoing  subsection (e) shall not
apply with respect to the issuance of Common Stock in  connection  with, or upon
the  exercise  or  conversion  of  securities  issued in  connection  with,  the
following transactions:

                           (i)  exercise  of rights or options  granted or which
         may be granted  under a stock  option or other plan for the  benefit of
         employees, directors and/or consultants;

                           (ii)   exercise   of  rights,   warrants  or  options
         outstanding on the date hereof (as described on Exhibit G;

                           (iii) after such time as  Mallinckrodt  first becomes
         eligible  to convert  any of the  Preferred  Stock in  accordance  with
         Section  5.2(c)  above,  upon the  issuance  and sale of any  shares of
         Common  Stock,  including the issuance of Common Stock upon exercise of
         convertible  or  exercisable  securities  sold  in  a  firm  commitment
         underwritten public offering,  including,  without  limitation,  shares
         sold upon the  exercise  of any  overallotment  option  granted  to the
         underwriters in connection with such offering;

                           (iv)   conversion   of  any   shares   of   Palatin's
         outstanding  preferred  stock  of any  other  series,  as  well  as any
         additional shares of Preferred Stock issued pursuant to Section 5.2(e);
         and

                           (v) issuance of Common Stock pursuant to antidilution
         provisions contained in existing employment agreements (as described on
         Exhibit G), and the issuance of Common Stock  pursuant to  antidilution
         provisions described on the certificate of designations with respect to
         the Series A Preferred Stock (also as described on Exhibit G).

                  (h) The purchase by Mallinckrodt of the Preferred Stock on and
as of the date hereof and any additional securities of Palatin that Mallinckrodt
may be  entitled to acquire in  accordance  with the  provisions  of the Section
5.2(e)  may  be  accomplished  in  accordance  with  the  terms  of  a  separate
subscription  agreement  or similar  agreement  if Palatin so desires;  provided
that,  such agreement  shall in all respects be consistent with the terms hereof
and in the event of any  conflict  or  inconsistency  between  the terms of such
agreement and the terms of this Agreement, the latter shall prevail.

         5.3      Piggyback Registration Rights.

                  (a) In the  event  that,  at any  time  during a five (5) year
period  following  the date on which  Mallinckrodt  first  becomes  eligible  to
convert any of the  Preferred  Stock in  accordance  with Section  5.2(c) above,
Palatin proposes to register any of its Common Stock under the Securities Act in
connection  with the public  offering of such  securities  utilizing a form that
would  additionally  permit the registration of all or any portion of the Common
Shares then held by Mallinckrodt, Palatin shall notify Mallinckrodt of such fact
at least thirty (30) days prior to the date established for such public offering
and shall give Mallinckrodt, subject to the limitations and restrictions of this
Section 5.3, the right to have included in any such  registered  public offering
all or any portion of the Common  Shares as  Mallinckrodt  shall notify  Palatin
within  twenty  (20) days after  Mallinckrodt  is given  notice of any  intended
registered  public offering by Palatin.  If  Mallinckrodt  shall not provide any
such notice to Palatin within said twenty (20) day period, Mallinckrodt shall be
conclusively presumed to have waived its right to have all or any portion of the
Common Shares included in any such Palatin registered public offering,  but such
waiver  shall  not  affect  Mallinckrodt's  rights  at  any  later  date  and in
connection with any subsequent public offering by Palatin to have some or all of
its Common Shares  registered in accordance  with the provisions and limitations
of this Section 5.3.  Palatin shall use reasonable  commercial  efforts to cause
the managing  underwriter or  underwriters,  if any, of a proposed  underwritten
offering to permit Mallinckrodt, if Mallinckrodt has validly requested that some
or all of its Common Shares be included in the registration for such offering in
accordance with the provisions of this subsection, to include such Common Shares
in such offering on the same terms and  conditions as any similar  securities of
Palatin included therein.  Nothing herein shall prevent Palatin from at any time
abandoning  or  delaying  any such  registration  or prevent  Mallinckrodt  from
exercising its registration rights under this Section 5.3(a) any number of times
prior to the  expiration  of the period  during which such rights are  available
hereunder.   Notwithstanding   anything  to  the  contrary   contained   herein,
Mallinckrodt  shall  not have the right to  include  all or any  portion  of the
Common  Shares in a  registered  public  offering by  Palatin,  pursuant to this
Section  5.3,  if all of the  Common  Shares  then held by  Mallinckrodt  become
eligible for sale in any three (3) month  period  pursuant to Rule 144 under the
Securities Act or any successor Rule.

                  (b) Notwithstanding the provisions of subsection (a) set forth
immediately  above,  Mallinckrodt shall not have the right to include all or any
portion of the Common Shares in a registered  public  offering by Palatin if, in
the reasonable judgment of the underwriter(s) or managing underwriter(s) for any
such  registered  public  offering,  the  addition  of some or all of the Common
Shares that Mallinckrodt wishes to have registered in connection therewith might
reasonably materially adversely affect the sale of all of the shares included in
such offering under the terms of the  registered  offering and during the period
of  effectiveness of the  registration  statement with respect  thereto.  In the
event that the  underwriter(s)  or managing  underwriter(s)  with respect to any
such public offering determines,  in its reasonable judgment,  that some but not
all of the Common Shares that Mallinckrodt  requested be included in any Palatin
registered  public offering may be included in such offering,  then Palatin will
notify  Mallinckrodt  as to the  portion  of the  Common  Shares  that may be so
included  and,  unless  Mallinckrodt  notifies  Palatin to the  contrary  within
fifteen (15) days of being so notified,  that  portion,  and only that  portion,
will be included in the registration  relative to any such public  offering.  If
Mallinckrodt  does timely  notify  Palatin to the  contrary,  none of its Common
Shares shall be included in such registration.

                  (c) In the event that Mallinckrodt  exercises its rights under
this  Section 5.3 and, in  connection  with any  registered  public  offering by
Palatin,  some  portion of the Common  Shares is  included  in the  registration
statement with respect  thereto,  Mallinckrodt  shall furnish  Palatin with such
information  concerning the Common Shares to be registered or otherwise incident
to the registration as Palatin shall reasonably request.  Mallinckrodt's  rights
pursuant to this  Section 5.3 shall be subject to its  compliance  with any such
Palatin request.

                  (d) Palatin shall bear all expenses of any  registered  public
offering  made pursuant to Section 5.3 in which all or any portion of the Common
Shares is included;  provided that,  Mallinckrodt  shall be responsible  for any
cost or expense (i) of its employees, agents, advisors or representatives to the
extent utilized in connection with any such registered public offering, (ii) for
the  preparation  of any  financial  statements,  documents  or the  assembly or
preparation  of any  other  information  concerning  Mallinckrodt  requested  by
Palatin  pursuant  to  subsection  (c) set  forth  immediately  above  and (iii)
underwriters' discounts and commissions applicable to the Common Shares included
in the offering.

                  (e)  Palatin  shall have an  obligation,  with  respect to any
registered  public  offering  made  pursuant  to Section 5.3 in which all or any
portion of the Common Shares is included,  to use reasonable  commercial efforts
to keep any registration statement effective,  subject to Section 5.5(b), for at
least thirty (30) days.

         5.4      Demand Registration Rights.

                  (a) Mallinckrodt  will have the right, on no more than two (2)
occasions,  and at any  time  within  five  (5)  years  after  the date on which
Mallinckrodt  first becomes  eligible to convert any of the  Preferred  Stock in
accordance  with  Section  5.2(c)  above,  to demand by notice to  Palatin  that
Palatin  register  all or any  portion  of  the  Common  Shares  then  owned  by
Mallinckrodt,  which  notice  must  specify  the  number of Common  Shares to be
registered and the intended method of disposition of those shares.  Upon receipt
of any such notice from  Mallinckrodt,  Palatin will take all actions reasonably
necessary  and  appropriate  to insure  that,  subject to the  restrictions  and
limitations  set forth in this Section 5.4 and otherwise  subject to any delays,
requirements or  restrictions  that may be imposed by the SEC, the NASD or other
regulatory  authority,  within  forty-five  (45)  days  of any  such  demand  by
Mallinckrodt,  a  registration  statement  shall  be  filed  on Form S-3 (or any
successor similar form if the use of such form is available) with respect to the
Common  Shares  for which  Mallinckrodt  demanded  registration,  subject to any
limitations set forth in Section 5.5 below. Palatin will use its best efforts to
cause such  registration  statement to become  effective as soon as possible and
subject to Section 5.5(b) will use its best commercial  efforts to keep any such
registration  statement effective for such period of time as may be necessary to
sell all of the Common Shares to be sold thereunder. Notwithstanding anything to
the contrary  contained herein,  Mallinckrodt shall not have the right to demand
registration  of all or any  portion  of the  Common  Shares,  pursuant  to this
Section  5.4,  if all of the  Common  Shares  then held by  Mallinckrodt  become
eligible for sale in any three (3) month  period  pursuant to Rule 144 under the
Securities Act or any successor Rule.

                  (b) In the event that Mallinckrodt  exercises its rights under
this Section  5.4,  Mallinckrodt  shall  furnish  Palatin with such  information
concerning  the Common  Shares to be  registered  or  otherwise  incident to the
registration as Palatin shall reasonably request. Mallinckrodt's rights pursuant
to Section 5.4 shall be subject to its compliance with any such Palatin request.

                  (c)  Mallinckrodt  shall bear all  expenses of any  registered
public  offering  made  pursuant to Section  5.4(a) above.  If  Mallinckrodt  so
elects, the offering of Common Shares pursuant to any demand  registration shall
be in the form of an underwritten offering. If any demand registration is in the
form of an  underwritten  offering,  Mallinckrodt  will  select  and  obtain the
managing underwriter or underwriters that will administer the offering, provided
that such managing  underwriter or underwriters must be reasonably  satisfactory
to Palatin.

                  (d)  Notwithstanding any other provisions of this Section 5.4,
in the event that,  with  respect to  Palatin's  Common  Stock,  a  registration
statement  has been  effective  at any time  during  a  ninety  (90) day  period
immediately  prior  to  the  giving  of a  demand  notice  for  registration  by
Mallinckrodt  pursuant  to  Section  5.4(a),   Palatin  shall  have  the  right,
exercisable by giving notice to Mallinckrodt  within fifteen (15) days after any
such notice from Mallinckrodt, to delay the filing of any registration statement
by Palatin  pursuant  to this  Section  5.4 for up to ninety (90) days after the
date on which any such  registration  statement  would  otherwise be required to
have been filed in accordance herewith.

                  (e)  Notwithstanding  any other provisions of this Section 5.4
and in addition to the provisions of subsection (d) set forth immediately above,
Palatin may delay the filing of any  registration  demanded  pursuant to Section
5.4(a) above if (i) it is in possession of material non-public information,  the
Chief Executive Officer of Palatin  determines (based on advice of counsel) that
such  delay  is  necessary  in order to avoid a  requirement  to  disclose  such
material  non-public  information  and the Chief  Executive  Officer  of Palatin
determines in good faith that disclosure of such material non-public information
would not be in the best  interests  of  Palatin  and its  shareholders  or (ii)
Palatin or any of its  Affiliates  is engaged  in or  proposes  to engage in any
material  transaction,  including  a purchase  or sale of assets or  securities,
financing  transaction,  merger,  consolidation,   tender  offer  or  any  other
transaction that would require disclosure under any applicable  securities laws,
rules or  regulations,  with  respect  to which the Chief  Executive  Officer of
Palatin in good faith  determines that the filing of the  registration  demanded
pursuant to this  Section  5.4(a) could  reasonably  be expected  materially  to
interfere  with  Palatin's  ability to consummate  such  transaction in a timely
fashion.  The period  during  which any delay  contemplated  by the  immediately
preceding sentence is in effect shall be referred to as a "Suspension Period." A
Suspension  Period  shall  commence  on and  include  the date on which  Palatin
provides written notice to Mallinckrodt of such  determination and Palatin shall
be entitled to postpone the filing of a  registration  statement  in  accordance
with this Section  5.4(e) for a reasonable  period of time not to exceed  ninety
(90)  days  with  respect  to any  particular  demand  by  Mallinckrodt  for the
registration of Common Shares pursuant to Section 5.4(a); provided that, Palatin
shall deliver to Mallinckrodt a statement, signed by the Chief Executive Officer
of Palatin,  of the general reasons for such  postponement or restriction on use
and an estimate of the anticipated delay, which Palatin agrees shall be as short
as possible  given the  circumstances  justifying  any such delay.  Mallinckrodt
agrees to keep the information relating to the delay confidential. Palatin shall
promptly notify  Mallinckrodt of the expiration of a Suspension Period or of its
decision to shorten any Suspension Period.

                  (f) In the event Mallinckrodt  determines,  as a result of any
delay  occasioned  by the  operation  of  either  subsection  (d) or (e) of this
Section 5.4, that it wishes to withdraw its demand for registration it may do so
upon notice to  Palatin.  If, and only if,  such  withdrawal  notice is given by
Mallinckrodt  less  than  ten  (10)  days  prior  to  the  scheduled  end of any
suspension period, the demand shall be with prejudice to its right on any future
occasion  (subject  to  the  limitations  set  forth  herein)  to  again  demand
registration  of all or any  portion of the  Common  Shares in  accordance  with
Section  5.4(a).  Failing such notice  Palatin shall  register the Common Shares
demanded to be registered by Mallinckrodt pursuant to Section 5.4(a).

         5.5      Registration Procedures.

                  (a) In  connection  with any  registration  to be  effected in
accordance with Section 5.3, Palatin will use reasonable  commercial  efforts to
effect such  registration  to permit the sale of the Common Shares being sold in
accordance  with the intended  method or methods of  distribution or disposition
thereof,  and  pursuant  thereto  Palatin  will comply with the  procedures  and
principles set forth in this Section 5.5, as they are applicable.  In connection
with any  registration  to be effected in accordance  with Section 5.4,  Palatin
will use its best efforts to effect such  registration to permit the sale of the
Common  Shares being sold in accordance  with the intended  method or methods of
distribution or disposition  thereof,  and pursuant  thereto Palatin will comply
with the  procedures  and  principles set forth in this Section 5.5, as they are
applicable.

                  (b)  Palatin  will  prepare  and file  with the SEC,  whenever
required to do so by the terms of Sections 5.3 and 5.4, a registration statement
relating to the  registration  on Form S-3 (or any successor or similar form) if
the use of such form is available,  unless  Palatin shall  reasonably  determine
that it is in the best  interest of both  Palatin and  Mallinckrodt  to file the
registration  statement  by  using  a  different  form  or  procedure,  and  use
reasonable  commercial  efforts  (with  respect to a  registration  pursuant  to
Section 5.3) or its best efforts  (with  respect to a  registration  pursuant to
Section 5.4) to cause any such  registration  statement to become  effective and
remain effective for (i) at least thirty (30) days if Mallinckrodt exercises its
piggyback  registration  rights pursuant to Section 5.3, or (ii) for such period
of time as may be necessary to sell all of the Common  Shares being  offered for
sale if Mallinckrodt  demands the  registration of any Common Shares pursuant to
Section 5.4, but  regardless of whether  piggyback or demand  registration,  not
later  than the date that all Common  Shares  then held by  Mallinckrodt  become
eligible for sale in any three (3) month  period  pursuant to Rule 144 under the
Securities  Act  or  any  successor  rule.  With  respect  to  the  exercise  by
Mallinckrodt of any piggyback registration rights pursuant to Section 5.3 or any
demand  registration  pursuant  to Section  5.4 with  respect  to which  Palatin
includes  any shares of Common  Stock,  before  the  filing of any  registration
statement or any prospectus,  or any amendments or supplements thereto,  Palatin
will furnish to Mallinckrodt and the managing  underwriter or  underwriters,  if
any, copies of all such documents proposed to be filed and Mallinckrodt,  within
a period of five (5)  business  days of receipt of such  copies,  shall have the
right to review and comment on such  documents;  provided  that,  Palatin  shall
consider any comments  Mallinckrodt  may have with respect to such documents but
shall not be required to make any changes based on such comments  unless Palatin
believes  any such  changes  would be in the best  interest  of Palatin  and its
shareholders and would be of benefit in the successful  completion of the public
offering.   With  respect  to  the  exercise  by   Mallinckrodt  of  any  demand
registration  rights  pursuant to Section  5.4 hereof and with  respect to which
Palatin is not offering any shares, before filing any registration  statement or
any prospectus,  or any amendments or supplements thereto,  Palatin will furnish
to Mallinckrodt and the managing underwriter or underwriters,  if any, copies of
all  such  documents  proposed  to be  filed,  and  Palatin  will  not  file any
registration  statement or amendment thereto or any prospectus or any supplement
thereto  to which  the  managing  underwriter  or  underwriters,  if any,  shall
reasonably object or to which  Mallinckrodt  shall reasonably object, as long as
such objection is provided by notice to Palatin within twenty (20) business days
after the receipt by the managing underwriter or underwriters or Mallinckrodt of
any documents for review.  For purposes of the immediately  preceding  sentence,
Mallinckrodt  or the managing  underwriter  or  underwriters,  if any,  shall be
deemed to have  reasonably  objected  to such  filing  if any such  registration
statement, amendment, prospectus or supplement, as applicable, as proposed to be
filed  contains  any untrue  statement  of a  material  fact or omits to state a
material fact required to be stated  therein or necessary to make the statements
therein  not  misleading,   which   misstatement  or  omission  is  specifically
identified  to Palatin in writing in  accordance  with the  requirements  of the
immediately preceding sentence.

                  (c) Palatin will prepare and file with the SEC such amendments
and post-effective  amendments to any registration statement as may be necessary
to keep any such registration statement effective for the respective periods set
forth in Sections 5.3 and 5.4 hereof and  reiterated in subsection (b) set forth
immediately  above  and will  cause the  prospectus  to be  supplemented  by any
required supplement thereto,  and as so supplemented to be filed pursuant to SEC
Rule 424(b) (or any  successor  or similar  rule),  and to comply fully with the
applicable provisions of SEC Rule 424(b) (or any successor or similar rule) in a
timely manner.

                  (d) Palatin will notify  Mallinckrodt  promptly in writing (i)
when the prospectus or any supplement thereto or post-effective amendment to any
registration  statement has been filed,  and,  with respect to the  registration
statement  or any  post-effective  amendment  thereto,  when the same has become
effective,  (ii) of any request by the SEC for an amendment of or  supplement to
any registration statement, any preliminary prospectus, or the prospectus or for
additional  information,  (iii)  of  the  issuance  by the  SEC  (or  any  state
securities  commission  or  other  governmental  authority)  of any  stop  order
suspending the effectiveness of any registration  statement or of the suspension
of qualification of the Common Shares for offering or sale in any  jurisdiction,
or the  initiation of any proceeding for such purposes and (iv) of the happening
of any event,  including  the filing of any  information,  documents  or reports
pursuant to the Securities Exchange Act of 1934 that makes any statement made in
any  registration  statement or the prospectus (as then amended or supplemented)
untrue in any material  respect or which requires the making of any additions to
or changes in any  registration  statement or the prospectus (as then amended or
supplemented)  in order to state a material fact required by the  Securities Act
of 1933,  as amended,  or the  regulations  thereunder  to be stated  therein or
necessary  in order to make the  statements  therein not  misleading,  or of the
necessity  to  amend  or  supplement   the   prospectus   (as  then  amended  or
supplemented)  to comply with the  Securities  Act of 1933,  as amended,  or any
other law.

                  (e) Palatin will,  concurrent  with the filing of any document
that is to be incorporated by reference into any  registration  statement or the
prospectus  subsequent  to the  initial  filing of any  registration  statement,
provides a copy of such document to Mallinckrodt, at Mallinckrodt's expense.

                  (f) Palatin will furnish to Mallinckrodt,  without charge, one
copy of every  registration  statement  as first filed with the SEC, and of each
amendment thereto.

                  (g) Palatin will deliver to Mallinckrodt,  without charge,  as
many copies of any preliminary  prospectus and the prospectus and any amendments
or  supplements  thereto as  Mallinckrodt  may reasonably  request,  and Palatin
hereby consents to the use of any preliminary prospectus and the prospectus (and
any  amendments  or  supplements  thereto)  by  Mallinckrodt  and  the  managing
underwriter and each of the underwriters,  if any, in connection with the public
offering  and the sale of any of the Common  Shares  covered by any  preliminary
prospectus and the prospectus (or any amendments or supplements  thereto) in the
manner specified therein.

                  (h)  Palatin  will use  reasonable  commercial  efforts  (with
respect to any registration to be effected pursuant to Section 5.3) and its best
efforts (with  respect to any  registration  to be effected  pursuant to Section
5.4) to cause the Common  Shares  covered by any  registration  statement  to be
registered with or approved by such other governmental  authorities  (including,
without limitation,  any applicable state securities or blue sky commissions) as
may be necessary to enable the seller or sellers thereof or the  underwriter(s),
if any, to consummate the disposition of such Common Shares.

                  (i) Palatin will make available for inspection,  at reasonable
times and intervals,  by a representative  of  Mallinckrodt,  by any underwriter
participating  in any  disposition  pursuant  to the filing of any  registration
statement in accordance herewith,  and by any attorney or accountant retained by
Mallinckrodt  or any of the  underwriters,  all  relevant  financial  and  other
records,  pertinent  corporate  documents  and  properties  of Palatin and cause
Palatin's officers, directors and employees to supply all information reasonably
requested by Mallinckrodt, any underwriter, attorney or accountant in connection
with the filing of any such registration statement prior to its effectiveness.

                  (j)  Palatin  will  cause all  Common  Shares  covered  by any
registration statement to be accepted for listing, subject to official notice of
issuance,  on each  securities  exchange or  quotation  system on which  similar
securities issued by Palatin are then listed.

                  (k) Palatin will enter into such  underwriting  agreements  as
are  reasonably  requested  by any  underwriter(s)  or  managing  underwriter(s)
containing such terms and conditions as are reasonably acceptable to Palatin.

                  (l) Palatin will otherwise use its best efforts to comply with
all applicable rules and regulations of the SEC.

         5.6      Indemnification with respect to Registration Rights.

                  (a) In  connection  with any  registration  statement in which
Mallinckrodt is included as a selling  stockholder,  Palatin agrees to indemnify
and hold harmless (i)  Mallinckrodt  and (ii) each person,  if any, who controls
Mallinckrodt  within the meaning of Section 15 of the Securities Act of 1933, as
amended,  or  Section  20 of the  Securities  Exchange  Act of 1934 (any  person
referred to in clause (i) or (ii) may sometimes  hereinafter be referred to as a
("Mallinckrodt  Indemnitee")  from  and  against  any  and all  losses,  claims,
damages,  liabilities and expenses (including reasonable costs of investigation)
arising out of or based upon any untrue statement or alleged untrue statement of
a material fact contained in any preliminary  prospectus or in any  registration
statement or the  prospectus  or in any  amendment  or  supplement  thereto,  or
arising out of or based upon any omission or alleged omission to state therein a
material fact required to be stated  therein or necessary to make the statements
therein,  in light of the  circumstances in which such statements were made, not
misleading,  except  insofar as such losses,  claims,  damages,  liabilities  or
expenses  arise out of or are based upon any untrue  statement  or  omission  or
alleged  untrue  statement  or omission  which has been made  therein or omitted
therefrom in reliance upon and in conformity with the  information  furnished to
Palatin by or on behalf of such Mallinckrodt Indemnitee.

                  (b) In  connection  with any  registration  statement in which
Mallinckrodt  is  included  as a  selling  stockholder,  Mallinckrodt  agrees to
indemnify  and hold  harmless  (i) Palatin  and (ii) each  person,  if any,  who
controls Palatin within the meaning of Section 15 of the Securities Act of 1933,
as amended,  or Section 20 of the  Securities  Exchange  Act of 1934 (any person
referred to in clause (i) or (ii) may sometimes  hereinafter be referred to as a
"Palatin  Indemnitee")  from and against any and all  losses,  claims,  damages,
liabilities and expenses (including  reasonable costs of investigation)  arising
out of or based  upon any untrue  statement  or alleged  untrue  statement  of a
material fact  contained in any  preliminary  prospectus or in any  registration
statement or the  prospectus  or in any  amendment  or  supplement  thereto,  or
arising out of or based upon any omission or alleged omission to state therein a
material fact required to be stated  therein or necessary to make the statements
therein,  in light of the  circumstances in which such statements were made, not
misleading,  to the extent and only to the extent such losses, claims,  damages,
liabilities or expenses  arise out of or are based upon any untrue  statement or
omission or alleged untrue  statement or omission which has been made therein or
omitted  therefrom  in  reliance  upon and in  conformity  with the  information
furnished  by  Mallinckrodt  to  Palatin  by or on  behalf  of any  Mallinckrodt
Indemnitee.

                  (c) If any action is brought  against any Palatin  Indemnitee,
Mallinckrodt Indemnitee or selling stockholder in respect of which indemnity may
be sought  against  Palatin or  Mallinckrodt,  as the case may be,  pursuant  to
either Section 5.6(a) or 5.6(b) above,  such indemnified  party or parties shall
promptly  notify the  indemnifying  party in writing of the  institution of such
action (but the failure so to notify  shall not relieve the  indemnifying  party
from any liability  pursuant to this Section 5.6, unless the indemnifying  party
shall have been  materially  prejudiced  by such  failure) and the  indemnifying
party shall promptly assume the defense of such action, including the employment
of counsel  (reasonably  satisfactory to such indemnified  party or parties) and
payment of expenses.  Such indemnified  party or parties shall have the right to
employ its or their own counsel in any such case,  but the fees and  expenses of
such counsel shall be at the expense of such indemnified party or parties unless
the  employment  of such counsel  shall have been  authorized  in writing by the
indemnifying  party in connection  with the defense of such action.  Anything in
this Section 5.6 to the contrary  notwithstanding,  the indemnifying party shall
not be liable for any  settlement of any such claim or action  effected  without
its written consent, which shall not be unreasonably withheld.

         5.7      Development Costs.

                  (a) All Development  Costs of Palatin which have been incurred
by Palatin prior to July 1, 1999 shall be the liability  and  responsibility  of
Palatin.

                  (b) Subject to Section 5.7(d) below, all Development  Costs of
Palatin that are incurred by Palatin  after date hereof shall be shared  equally
by the parties  and  Mallinckrodt  shall,  therefore,  pay  one-half of all such
Development   Costs  (i.e.,  the  "Development   Payments")  to  Palatin,   such
Development  Payments to be made (subject to offset in  accordance  with Section
5.8(a)  below  and  subject  to  audit in  accordance  with  the  provisions  of
subsection  (c) set forth  immediately  below) on a monthly  basis within thirty
(30) days after the  submission  by Palatin to  Mallinckrodt  of an invoice  and
written report  (accompanied  by a statement of the  principles and  assumptions
utilized by Palatin in calculating  such  Development  Costs, a breakdown of the
Development  Costs  between and among  wages,  supplies  and  contract  research
expenses which constitute  "qualified  research  expenses" within the meaning of
Section 41(b)(1) of the Internal  Revenue Code of 1986, as amended,  and by such
supporting   documentation   and  information  as   Mallinckrodt   may  request)
demonstrating the amount of qualifying  Development Costs incurred by Palatin in
the previous calendar month. All Development Payments shall be payable in United
States  dollars.  Any amounts  payable under this subsection (b) and not paid by
Mallinckrodt  within the applicable thirty (30) day period shall accrue interest
at an annual rate of eight percent (8%) on the unpaid balance due until paid.

                  (c) Upon the written  request of  Mallinckrodt,  Palatin shall
permit an independent public accountant  selected by Mallinckrodt and acceptable
to Palatin,  which acceptance shall not be unreasonably  withheld or delayed, to
have access  during normal  business  hours to such records of Palatin as may be
necessary to verify the amount of any  Development  Costs incurred by Palatin in
accordance  herewith in respect of any calendar year (or portion thereof) ending
not more than twelve (12) months prior to the date of such  request.  Subject to
other relevant  provisions of this subsection (c), all such verifications  shall
be conducted at Mallinckrodt's  expense and not more than twice in each calendar
year. In the event that Mallinckrodt's representative concludes that adjustments
should be made in Mallinckrodt's  favor with respect to any audited period, then
any appropriate  refund of Development  Payments,  plus accrued  interest at the
annual rate of eight percent (8%) on any amounts due Mallinckrodt  measured from
the date on which any amount to be refunded was originally paid by Mallinckrodt,
shall be made by  Palatin  within  thirty  (30)  days of the  date  Mallinckrodt
delivers to Palatin such  representative's  written report so concluding (or, at
Mallinckrodt's  option,  shall be  offset by  Mallinckrodt  against  any  future
Development  Payments due by Mallinckrodt to Palatin hereunder),  unless Palatin
shall have a good faith dispute as to the  conclusions set forth in such written
report,  in which  case  Palatin  need not make  the  disputed  portion  of such
repayment and shall provide  written notice to  Mallinckrodt  within such thirty
(30) day period of the nature of its disagreement  with such written report.  If
Palatin shall have in writing so disputed such written report by  Mallinckrodt's
representative,  the parties shall  thereafter,  for a period of sixty (60) days
after Palatin has provided written notice of such dispute, attempt in good faith
to resolve  such dispute and if they are unable to do so then the matter will be
submitted to  arbitration  in  accordance  with  Section  10.6 hereof.  The fees
charged by Mallinckrodt's  representative  shall be paid by Mallinckrodt  unless
the audit  discloses  that  adjustments in  Mallinckrodt's  favor for the period
under review are greater  than five  percent  (5%) of the amount of  Development
Costs invoiced by Palatin to Mallinckrodt for such period, in which case Palatin
shall pay the  reasonable  fees and  expenses  charged  by such  representative.
Mallinckrodt agrees that all information subject to review under this subsection
(c) is confidential  and that it shall cause its  representatives  to retain all
such  information in confidence in accordance with the requirements of Article 7
below.

                  (d)  Notwithstanding  the  provisions of Section 5.7(b) above,
(i) no  Development  Payments  will be made for any  costs  incurred  after  the
termination  of the  Development  Phase in any  portion  of the  Territory  with
respect to a LeuTech  Indication which is being developed in accordance with the
Development Program and (ii) [INFORMATION  OMITTED AND FILED SEPARATELY WITH THE
COMMISSION  UNDER RULE 24b-2].  Mallinckrodt  hereby  represents and warrants to
Palatin that the Development Payments have been approved by all necessary action
on the  part  of the  Board  of  Directors  of  Mallinckrodt  Inc.,  a New  York
corporation  publicly  traded on the New York Stock  Exchange  and the  ultimate
parent of Mallinckrodt,  and that  Mallinckrodt will take all steps necessary to
ensure  that  Development  Payments  will be made to  Palatin as and when due in
accordance herewith.

         5.8      Loans and Advances.

                  (a) Throughout the term of this  Agreement,  Palatin shall use
its best efforts to maintain an amount of cash and cash  equivalents  sufficient
to cover its anticipated  operating expenses,  including its estimated amount of
the Development Costs as set forth in the Annual  Development Plan for any year.
If at any  time  Palatin's  cash  reserves  are  not  sufficient  to  cover  its
anticipated  operating  expenses  and/or its portion of any  Development  Costs,
Mallinckrodt  will  consider  loaning (but shall not be under any  obligation to
loan) funds to Palatin,  but only to the extent of any actual cash shortfall and
only if commercial funding is demonstrably not available to Palatin. Any amounts
loaned by Mallinckrodt to Palatin in accordance herewith shall be evidenced by a
promissory note with terms  reasonably  acceptable to Mallinckrodt  and shall be
secured by such  assets of Palatin as Palatin  would  normally  be  required  to
pledge as collateral in any commercial loan  transaction.  All amounts loaned by
Mallinckrodt  to  Palatin  shall  bear  interest  at the  prime  rate  plus  two
percentage  points,  as determined  from the prime interest rate as published by
the Wall  Street  Journal  on the last day of the month  preceding  the month in
which any such loan is made and shall be  repayable in full as soon as Palatin's
cash reserves are restored,  but in no event later than the third anniversary of
the First  Commercial  Sale of LeuTech  Products in the  Territory or the second
(2nd)  anniversary of the date of any such loan,  whichever  occurs first. It is
also  understood  that, if Palatin fails to make any payment with respect to any
such loan as and when due under the  terms of any  applicable  promissory  note,
Mallinckrodt  shall have the right to offset  against the principal and interest
of any  amounts  loaned to Palatin  and due and  payable  under the terms of any
applicable promissory note all or any portion of any Development Payments due by
Mallinckrodt  to Palatin in  accordance  with the  provisions  of Section 5.7 or
Royalty  Payments  due  by  Mallinckrodt  to  Palatin  in  accordance  with  the
provisions of Section 5.9; provided that, Mallinckrodt shall give written notice
to Palatin of the amount and nature of any such  offset  contemporaneously  with
Mallinckrodt's exercise of such right.

                  (b) Prior to the date hereof,  Mallinckrodt  advanced  Palatin
the sum of Two Million Dollars  ($2,000,000)  secured by a promissory note and a
security agreement, copies of which are attached hereto as Exhibit H and Exhibit
I. It is understood  that the principal  amount of such advance plus all accrued
interest  thereon is being  repaid by Palatin to  Mallinckrodt  on and as of the
date hereof by offset  against that portion of the amount  otherwise  payable by
Mallinckrodt  to Palatin in accordance  with Section  5.2(b) above.  On the date
hereof,  Mallinckrodt will return to Palatin the original of the promissory note
attached  hereto as Exhibit H marked as cancelled and paid in full together with
collateral under the Security Agreement.

         5.9      Royalty Payments.

                  (a)      [INFORMATION  OMITTED AND FILED  SEPARATELY  WITH THE
                           COMMISSION UNDER RULE 24b-2].

                  (b) During the term of this  Agreement and with respect to any
calendar quarter during which there are commercial sales of any LeuTech Products
in the  Territory,  Mallinckrodt  shall  within sixty (60) days after the end of
each such  calendar  quarter  furnish  to  Palatin a  written  quarterly  report
showing:  (i) the gross sales of LeuTech  Products sold by Mallinckrodt  and its
Affiliates  during the quarter just ended and the  calculation of Net Sales from
such gross sales revenue,  (ii) any other revenues relating to LeuTech Products,
including but not limited to royalties and any other payments from  sublicensees
and  amounts  paid  by  distributors,  and  (iii)  the  exchange  rates  used in
determining Net Sales in United States dollars. Mallinckrodt shall keep complete
and accurate  records in sufficient  detail to properly  reflect all information
contained in such report,  and to enable Net Sales and Royalty  Payments payable
hereunder to be determined with accuracy.

                  (c) Upon the written  request of Palatin,  Mallinckrodt  shall
permit an independent  public  accountant  selected by Palatin and acceptable to
Mallinckrodt, which acceptance shall not be unreasonably withheld or delayed, to
have access during normal  business hours to such records of Mallinckrodt as may
be  reasonably  necessary  to  verify  the  accuracy  of  the  reports  made  by
Mallinckrodt  pursuant to Section 5.9(b) and the consequent Royalty Payments due
Palatin in respect of any  calendar  year (or portion  thereof)  ending not more
than  twelve  (12) months  prior to the date of such  request.  Subject to other
relevant  provisions of this  subsection  (c), all such  verifications  shall be
conducted at Palatin's expense, not more than twice in each calendar year and no
quarterly  period may be  audited  more than  once.  In the event  such  Palatin
representative  concludes that additional  Royalty Payments were owed to Palatin
during such  audited  period,  the  additional  Royalty  Payments,  plus accrued
interest  at the annual  rate of eight  percent  (8%) on any amounts due Palatin
measured from the date on which any amount owed to Palatin should have been paid
by  Mallinckrodt,  shall be paid by Mallinckrodt  within thirty (30) days of the
date Palatin delivers to Mallinckrodt  such  representative's  written report so
concluding,  unless  Mallinckrodt  shall  have a good  faith  dispute  as to the
conclusions set forth in such written report, in which case  Mallinckrodt  shall
provide  written  notice to Palatin  within  such  thirty (30) day period of the
nature of its  disagreement  with such  written  report and may, if such written
notice has been  given,  withhold  payment of the  disputed  portion of any such
Royalty Payment.  If Mallinckrodt has provided written notice to Palatin that it
disputes any of Palatin's auditor's  conclusions,  the parties shall thereafter,
for a period of sixty (60) days,  attempt in good faith to resolve  such dispute
and if they are unable to do so then the matter will be submitted to arbitration
in accordance with Section 10.6. The fees charged by such  representative  shall
be paid by Palatin unless the audit discloses that any Royalty  Payments made by
Mallinckrodt  for the audited  period were  incorrect  by more than five percent
(5%),  in which case  Mallinckrodt  shall pay the  reasonable  fees and expenses
charged by such  representative.  Palatin agrees that all information subject to
review under this  subsection  (c) is  confidential  and that it shall cause its
representatives  to retain all such information in confidence in accordance with
the requirements of Article 7 below.

                                    Article 6

                              INTELLECTUAL PROPERTY

         6.1  General  Principles.   It  is  understood  by  the  parties  that,
notwithstanding  any  payments  that  may be made  by  Mallinckrodt  to  Palatin
hereunder  and  further  notwithstanding  the joint  cooperation  of the parties
hereunder,  throughout  the existence of this  Agreement  and  subsequent to its
expiration,  the  Palatin  Intellectual  Property  Rights  (including,   without
limitation,  the Palatin  Patent Rights and the LeuTech  compound)  shall be and
remain the sole  property of Palatin,  subject  only to such  licenses as may be
granted to Mallinckrodt in accordance with any relevant  provisions  hereof. Any
inventions or developments  relating to LeuTech or any LeuTech Products pursuant
to this Agreement, whether or not patentable, shall belong to Palatin.

         6.2  Cross-Licensing.  The parties understand that during the existence
of  this  Agreement,  one  party  may  develop  modifications,  improvements  or
technology  (whether  patentable  or not) in  connection  with their  activities
hereunder  that may be of use to the  parties in  connection  with  their  joint
endeavors  hereunder  concerning  LeuTech Products.  The party that develops any
such  modifications,  improvements  or  technology  will  notify the other party
promptly  of  the  existence  and  nature  thereof.   Any  such   modifications,
improvements  or technology  developed by one party that are useful to the other
party in performing its obligations  hereunder concerning LeuTech Products shall
be licensed  by the  developing  party to the other party for use in  connection
with such other party's  performance  hereunder on a  royalty-free  basis,  such
license to be coterminous  with the existence of this  Agreement,  except and to
the extent otherwise provided in Section 3.2(b) or Article 9 hereof, as they may
be  applicable.  Neither this Section nor any other  provision of this Agreement
shall be  construed  as  granting  any party a direct or implied  license to any
Intellectual Property Rights except as they apply to LeuTech Products.



         6.3  Filing,   Prosecution  and  Maintenance  of  Palatin  Intellectual
Property Rights.

                  (a)  Palatin  shall  be  responsible  for  maintenance  of the
Palatin Patent Rights and all other Palatin Intellectual  Property Rights in its
own name and at its own expense,  keeping Mallinckrodt informed.  Palatin agrees
that it will not abandon the  prosecution  of any patent  applications  included
within the Palatin Patent Rights nor will it fail to make any payment or fail to
take any other  action  necessary  to  maintain  its rights to an issued  patent
included in the Palatin  Patent  Rights  without  the prior  written  consent of
Mallinckrodt.

                  (b) Palatin and  Mallinckrodt  shall each promptly  notify the
other in writing of any alleged or threatened  infringement of patents or patent
applications  included in the Palatin  Patent Rights of which they become aware.
If any such actual or alleged  infringement  poses any reasonable  threat to the
commercial  viability  or success of any LeuTech  Product  that is being sold or
marketed or is in the process of development hereunder,  Palatin shall prosecute
any such  infringement  using  counsel of its  selection  and no  settlement  or
compromise  or consent to the entry of any  judgment  or other  voluntary  final
disposition  of the suit may be entered  into by Palatin  without the consent of
the Joint Steering Committee,  which consent shall not unreasonably be withheld.
[INFORMATION OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2].

                  (c) In any infringement  suit instituted by Palatin to enforce
the Palatin Patent Rights pursuant to this Agreement, each party shall cooperate
in all respects and, to the extent  possible,  have its  employees  testify when
requested and make available relevant records, papers, information,  samples and
the like.
[INFORMATION OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2].

                  (d) In the event that a declaratory  judgment  action alleging
invalidity  or  non-infringement  of any of the Palatin  Patent  Rights shall be
brought against Palatin,  Palatin shall notify  Mallinckrodt in writing.  Unless
the Joint  Steering  Committee  decides that such action should not be defended,
Palatin  will  defend  said  action  using  counsel  of  its  selection,  and no
settlement,  consent judgment or other voluntary final disposition of the action
may be  entered  into by  Palatin  without  the  consent  of the Joint  Steering
Committee,  which  consent  shall not  unreasonably  be  withheld.  [INFORMATION
OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2].

         6.4 Infringement  Action Against Either Party. In the event that a suit
or action is brought  against  either party alleging  infringement  of any third
party  patent  right  as a  result  of the  exercise  of  Mallinckrodt's  or its
Affiliates'  rights  pursuant  to  the  license  granted  Mallinckrodt  and  its
Affiliates under Section 2.1 hereof,  such party shall notify the Joint Steering
Committee.  Palatin will defend said action,  using counsel of its selection and
reasonably  acceptable to Mallinckrodt,  and no settlement,  consent judgment or
other voluntary  final  disposition of the action may be entered into by Palatin
without the consent of the Joint  Steering  Committee,  which  consent shall not
unreasonably  be withheld.  [INFORMATION  OMITTED AND FILED  SEPARATELY WITH THE
COMMISSION UNDER RULE 24b-2].

         6.5 Cooperation Generally. Mallinckrodt shall make available to Palatin
(or  to  Palatin's  authorized  attorneys,   agents  or  representatives),   its
employees, agents,  representatives or consultants (at Mallinckrodt's reasonable
expense) to the extent reasonably  necessary or appropriate to enable Palatin to
file,  prosecute and maintain patent applications and resulting patents included
in the  Palatin  Patent  Rights  and  relevant  to the  strategic  collaboration
hereunder for periods of time  reasonably  sufficient  for Palatin to obtain the
assistance it needs from such personnel.

         6.6 No  Ownership.  Except  as  otherwise  expressly  provided  in this
Agreement,  under no  circumstances  shall a party  hereto,  as a result of this
Agreement or  performance  of its  obligations  hereunder,  obtain any ownership
interest in or other right to any technology,  know-how, patents, pending patent
applications, products or biological materials of the other party.

                                    Article 7

                                 CONFIDENTIALITY

         7.1      Nondisclosure Obligations.

                  (a) Except as otherwise provided in this Article 7, during the
term of this Agreement and for a period of ten (10) years thereafter, each party
shall maintain in confidence and use only for purposes  specifically  authorized
under this  Agreement (i) all  information  and data,  whether  written or oral,
received  from the other  party  resulting  from or related to the  development,
manufacture,  marketing or sale of LeuTech Products and (ii) all information and
data not  described  in clause (i) but  supplied by one party to the other party
under this Agreement and marked "Confidential", or with words of similar import,
or, if delivered orally, summarized and confirmed in writing in a manner clearly
indicating its confidentiality.  For purposes of this Article 7, information and
data  described  in clause  (i) or (ii) set forth in the  immediately  preceding
sentence shall be referred to as "Information."

                  (b) To the extent it is reasonably necessary or appropriate to
fulfill its obligations or exercise its rights under this Agreement, a party may
disclose  Information  it is otherwise  obligated  under this Section 7.1 not to
disclose to its Affiliates,  sublicensees,  distributors,  consultants,  agents,
representatives  and clinical  investigators,  only on a need-to-know  basis and
only on  condition  that such  entities or persons  agree in writing to keep the
Information  confidential  for the same time  periods  and to the same extent as
such party is required  to keep the  Information  confidential  and agree to use
such Information only for purposes relevant to the performance by a party of its
obligations under this Agreement. In addition, a party or its Affiliates (or any
of  their  sublicensees  or  distributors)  may  disclose  such  Information  to
government or other regulatory authorities to the extent that such disclosure is
reasonably  necessary to obtain patents or  authorizations  to conduct  clinical
trials of, and to commercially market and sell, LeuTech Products.

                  (c) In addition to the exceptions to non-disclosure  set forth
in subsection (b) set forth immediately above, the obligation not to disclose or
misuse  Information shall not apply to any part of such Information that: (i) is
or becomes  part of the public  domain  other than by  unauthorized  acts of the
party obligated not to disclose such Information or those of its Affiliates,  or
its or  their  distributors  or  sublicensees,  (ii)  can be  shown  by  written
documents to have been disclosed to the receiving party or its Affiliates, or to
its or their distributors or sublicensees, by a third party without violation of
an obligation of confidentiality  with respect to such disclosure,  (iii) can be
demonstrated by competent  evidence,  prior to disclosure  under this Agreement,
already to have been in possession of the receiving party or its Affiliates,  or
its or their  distributors or  sublicensees,  provided such  Information was not
obtained  directly  or  indirectly  from  any  third  party  that  was  under an
obligation of confidentiality  with respect to such Information and in violation
of such obligation,  (iv) can be demonstrated by competent evidence to have been
independently  developed by the receiving party or its Affiliates,  or by its or
their  distributors or  sublicenses,  without breach of any of the provisions of
this Agreement, or (v) is disclosed by the receiving party or its Affiliates, or
by its or their  distributors  or  sublicensees,  pursuant  to  interrogatories,
requests for information or documents,  subpoenas or civil investigative demands
(or similar process) issued by a court or governmental agency or pursuant to any
other  requirement  of law,  provided  that the party so  disclosing,  if at all
possible,  notifies  the other party prior to any such  disclosure  so that such
other party (with the cooperation of the receiving  party) can seek a protective
order or other order  limiting or  preventing  disclosure  (if and to the extent
available  under the  circumstances),  and  provided  further  that the party so
disclosing  furnishes only that portion of the  Information  which it is legally
required to disclose under the circumstances.

         7.2 Terms of this Agreement. Palatin and Mallinckrodt each agree not to
disclose any terms or  conditions  of this  Agreement to any third party without
the prior consent of the other party,  except as required by applicable  law. If
either party  determines that it is required to file this Agreement with the SEC
or  other  governmental   agency  for  any  reason,  such  party  shall  request
confidential  treatment of such portions of this  Agreement as the parties shall
together  determine as  appropriate.  Notwithstanding  the  foregoing,  prior to
execution  of this  Agreement,  Palatin  and  Mallinckrodt  have agreed upon the
substance of  information  that can be used as a routine  reference in the usual
course of business to describe  the terms of this  transaction,  and Palatin and
Mallinckrodt may disclose such information, as modified by mutual agreement from
time to time,  without  the other  party's  consent as may  periodically  become
necessary or appropriate.

         7.3      Publications.

                  (a)  Procedure.  The parties hereto  acknowledge  their mutual
interest in obtaining  patent  protection for inventions  which arise under this
Agreement.  In the event that either party,  its employees or consultants or any
other third party under  contract to either party  wishes to make a  publication
pertaining  to the technical  aspects of LeuTech  Products  (including  any oral
disclosure  made  without  obligation  of  confidentiality)   relating  to  work
performed  under this  Agreement  (the  "Publishing  Party"),  such party  shall
transmit  to the other  party  (the  "Reviewing  Party") a copy of the  proposed
written  publication  at least  forty-five  (45) days  prior to  submission  for
publication  or an abstract of such oral  disclosure  at least  thirty (30) days
prior to  submission of the abstract or oral  disclosure,  whichever is earlier.
The  Reviewing  Party shall have the right (i) to propose  modifications  to the
publication,  (ii) to request a delay in publication or presentation in order to
protect  patentable  information,  or (iii) to request that the  information  be
maintained as a trade secret and, in such case, the  Publishing  Party shall not
make such publication.

                  (b)  Delay.  If  the  Reviewing  Party  requests  a  delay  as
described in Section 7.3(a)(ii),  the Publishing Party shall delay submission or
presentation  of the  publication  for a period  of  ninety  (90) days to enable
patent  applications  protecting  each party's rights in such  information to be
filed.

                  (c)  Resolution.  Upon the receipt of written  approval of the
Reviewing Party,  the Publishing Party may proceed with the written  publication
or the oral presentation.

         7.4 Injunctive  Relief.  The parties  hereto  understand and agree that
remedies at law may be  inadequate  to protect a party against any breach by the
other party (or any other  person  acting in concert with such other party or on
its behalf) of any of the provisions of this Article 7. Accordingly,  each party
shall be entitled to the granting of injunctive relief or other equitable relief
by a court of competent  jurisdiction  against any action that  constitutes  any
breach of this Article 7, in addition to any monetary damages or other relief to
which a party may be entitled.

                                    Article 8

                                    INDEMNITY

         8.1  Mallinckrodt  Indemnity   Obligations.   Subject  to  all  of  the
applicable   provisions   of  this  Article  8,  and   excepting   the  separate
indemnification and procedures set forth in Section 5.6,  Mallinckrodt agrees to
defend,  indemnify  and  hold  Palatin,  its  Affiliates  and  their  respective
directors,  officers,  employees and agents harmless from and against all costs,
judgments,  liabilities  and damages  resulting from claims  asserted by a third
party against Palatin, its Affiliates or their respective  directors,  officers,
employees or  representatives  arising in connection  with or as a result of (i)
actual  or  asserted   violations  of  any   applicable  law  or  regulation  by
Mallinckrodt, its Affiliates,  sublicensees,  distributors or representatives in
connection  with the  sales,  marketing  and  distribution  (including,  without
limitation,  storage and  radiolabeling) of LeuTech Products,  including without
limitation,  actual,  alleged or asserted  violations  relating to  adulterated,
misbranded,  mislabeled or LeuTech  Products  otherwise  not in compliance  with
applicable law or regulation,  (ii) claims for bodily injury,  death or property
damage  attributable to a recall ordered by a governmental agency or required by
a  confirmed  failure of  LeuTech  Products  to the extent  caused by any act or
omission to act by Mallinckrodt or its Affiliate or representative in connection
herewith,  and (iii) any negligent or willful or intentional  act or omission to
act  by  Mallinckrodt,  its  Affiliates  or  representatives  in any  manner  in
connection with performance hereunder.

         8.2 Palatin  Indemnity  Obligations.  Subject to all of the  applicable
provisions of this Article 8 and in addition to any obligations Palatin may have
under Article 6 set forth above, and excepting the separate  indemnification and
procedures  set forth in Section 5.6,  Palatin  agrees to defend,  indemnify and
hold  Mallinckrodt,  its Affiliates and their  respective  directors,  officers,
employees and agents harmless from and against all costs, judgments, liabilities
and  damages   resulting   from  claims   asserted  by  a  third  party  against
Mallinckrodt,  its Affiliates or their respective directors, officers, employees
or  representatives  arising in connection  with or as a result of (i) actual or
asserted  violations  of  any  applicable  law or  regulation  by  Palatin,  its
Affiliates,   sublicensees,   distributors  or   representatives  in  connection
herewith,  including (without limitation) any such actual or asserted violations
by Palatin or by any third party  contract  manufacturer  employed by Palatin by
virtue of which any LeuTech  Products  manufactured,  distributed or sold in any
manner in connection  herewith shall be alleged or determined to be adulterated,
misbranded,  mislabeled or otherwise not in compliance  with such applicable law
or  regulation,  (ii)  claims  for  bodily  injury,  death  or  property  damage
attributable  to a recall  ordered by a  governmental  agency or  required  by a
confirmed  failure  of  LeuTech  Products  to the  extent  caused  by any act or
omission to act by Palatin or its  Affiliates or  representatives  in connection
herewith,  (iii) any negligent or willful or intentional  act or omission to act
by Palatin,  its Affiliates or  representatives in any manner in connection with
performance  hereunder,  and (iv) claims for bodily injury or death attributable
to the toxicology,  biologic activity or manufacture of LeuTech Products.  It is
understood between the parties,  however, that since the LeuTech Products may be
radiolabeled and stored by Mallinckrodt, or its Affiliates or sublicensees, then
with  respect  to  any  claims  asserted  by any  third  party  concerning  said
radiolabeling  and storage,  Mallinckrodt  shall indemnify  Palatin  pursuant to
Section 8.1.

         8.3 Product  Liability.  Mallinckrodt and Palatin  understand and agree
that,  because  of the  nature  of the  collaborative  effort  set forth in this
Agreement,  should any third party claims be asserted  against either or both of
them or any of  their  Affiliates,  agents  or  representatives  that are in the
nature of product  liability  claims  (i.e.,  third party claims  covered by the
indemnification  obligation  of Palatin  pursuant  to clause (iv) of Section 8.2
above),  the parties  will  cooperate  to ensure that such claims are  defended,
settled and  compromised  in a manner that best  protects the  interests of both
parties hereunder.  However, unless and until Palatin can demonstrate otherwise,
it shall be presumed that any third party claims relating to the toxicology,  to
the biologic  activity or to the  manufacture  of LeuTech  Products shall be the
responsibility  and  liability  of Palatin in  accordance  with  clause  (iv) of
Section  8.2 above  and  Palatin  shall  defend  such  claim.  Palatin  shall be
responsible for defending any such claims with counsel of its selection and will
have the daily  responsibility  for managing the defense of such claim,  keeping
Mallinckrodt continually informed of any developments,  issues or decisions that
arise as a  consequence  of such claim.  It is  understood  between the parties,
however,  that since the LeuTech  Products will be radiolabelled by Mallinckrodt
or its  Affiliates,  then with respect to any claims asserted by any third party
concerning said radiolabelling, Mallinckrodt shall indemnify Palatin pursuant to
Section  8.1.  As the Joint  Steering  Committee  shall  determine,  Palatin and
Mallinckrodt  will  procure  and  maintain  product  liability   insurance  with
responsible carriers in amounts and with coverages and deductibles determined by
the Joint Steering Committee to be reasonable.

         8.4 Contribution.  Notwithstanding  any other provision of this Article
8, to the extent it is possible to  determine  with  accuracy,  each party shall
only be responsible  hereunder for and shall only have the duty to indemnify and
hold  harmless the other party  hereunder  for that  portion of any loss,  cost,
damages or expense  attributable to its acts or omissions to act,  provided that
(except as and to the extent set forth in the last  sentence  of Section 8.2 and
the penultimate  sentence of Section 8.3),  Palatin shall be responsible for all
product  liability claims related to LeuTech  Products without  reference to its
acts or omissions to act in connection  with the  circumstances  surrounding any
such claim.  If, in connection with any third party claim for which both parties
have  responsibility for any loss, cost, damage or expense,  it is impossible to
determine or fairly estimate the relative  proportion of  responsibility  of the
parties,  they shall each be  responsible  for an equal  share of any such loss,
cost,  damage or expense.  In the event there is any dispute between the parties
concerning their relative proportion of responsibility with respect to any third
party claim the parties shall attempt to resolve such dispute  within sixty (60)
days of the date it arises but, if they are unable to do so, the matter shall be
referred to arbitration for resolution pursuant to Section 10.6.

         8.5 Procedure. Unless and to the extent otherwise specifically provided
herein,  a party or any of its  Affiliates  (the  "Indemnitee")  that intends to
claim indemnification under this Article 8 shall promptly notify the other party
(the  "Indemnitor") of any loss, claim,  damage, or liability arising out of any
third party claim or action in respect of which the Indemnitee  intends to claim
such  indemnification,  and the Indemnitor shall assume the defense thereof with
counsel of its own choosing;  provided,  however,  that an Indemnitee shall have
the right to retain its own  counsel,  with the fees and  expenses to be paid by
the Indemnitor,  if representation of such Indemnitee by the counsel retained by
the Indemnitor, in the opinion of an independent counsel chosen by both parties,
would be inappropriate  due to actual or potential  differing  interests between
such  Indemnitee  and  any  other  party  represented  by such  counsel  in such
proceedings.  An Indemnitee shall not be entitled to indemnification  under this
Article 8 if any  settlement or compromise of a third party claim is effected by
the Indemnitee without the consent of the Indemnitor, which consent shall not be
unreasonably  withheld  or  delayed.  An  Indemnitee  shall not be  entitled  to
indemnification  with respect to any third party claim in an amount in excess of
the amount which such third party has  unequivocally  and in writing agreed with
the  Indemnitor  it is willing to accept in settlement or compromise of any such
third  party  claim.  The  failure by the  Indemnitee  to deliver  notice to the
Indemnitor  within a reasonable  time after the  commencement  of any such third
party claim or action, if materially  prejudicial to the Indemnitor's ability to
defend such  action,  shall  relieve  such  Indemnitor  of any  liability to the
Indemnitee  under this Article 8. An Indemnitee,  and its employees,  agents and
representatives,  shall  cooperate  fully  with  the  Indemnitor  and its  legal
representatives  in the investigation of any action,  claim or liability covered
by this indemnification.

                                    Article 9

                           EXPIRATION AND TERMINATION

         9.1 Termination and Expiration of the Development Phase.

                  (a) Unless this Agreement is sooner terminated by either party
in  accordance  with the  provisions  of this  Article 9 or by  Mallinckrodt  in
accordance  with  the  provision  of  Section  3.2(b)  above,  the  term  of the
Development  Phase as to any LeuTech  Product shall terminate in accordance with
Section 1.13.

                  (b) In  addition  to  the  right  of  termination  granted  to
Mallinckrodt by the provisions of Section 3.2(b) above, the Development Phase as
to any LeuTech Product may be terminated  prior to the completion of development
of such LeuTech  Product with respect to all or any portion of the Territory (i)
at any time by the mutual consent of the parties, (ii) by one party, upon notice
to the other party, if the terminating party has substantial evidence to support
the  conclusion  that any such LeuTech  Product is not likely to become a viable
and profitable  commercial  product or (iii) by either party upon written notice
to the  other if the  Joint  Steering  Committee  does not  approve  the  Annual
Development  Plan for such LeuTech Product pursuant to Section 3.1(f) and, after
the matter has been submitted for dispute resolution  pursuant to Section 4.1(e)
hereof,  the  terminating  party  determines  in good faith that it is unable to
proceed with  development of such LeuTech Product based on the  determination of
the arbitrator.

                  (c) In the event that,  pursuant to  subsection  (b) set forth
immediately  above, the Development  Phase is terminated prior to the completion
of development  of any LeuTech  Product for all or any portion of the Territory,
then all rights with respect to the use,  manufacture,  marketing,  distribution
for sale,  licensing and  sublicensing  of such LeuTech  Product with respect to
such portion of the Territory shall revert to Palatin.

                  (d) The  expiration or termination  of the  Development  Phase
with  respect to any LeuTech  Product  for all or any  portion of the  Territory
shall not  relieve the  parties of any  obligation  that  accrued  with  respect
thereto prior to such expiration or termination,  including either party's right
to recover all costs and expenses incurred or committed prior to such expiration
or termination.  Furthermore,  notwithstanding  any other provisions hereof, the
expiration or  termination of the  Development  Phase with respect to any or all
LeuTech  Products  shall have no effect  whatsoever  on (i) the rights of either
party under the  provisions of Sections 5.2, 5.3, 5.4, 5.5 and 5.6 above or (ii)
the issuance and sale of the Preferred Stock.

         9.2      Termination and Expiration of this Agreement.

                  (a) This  Agreement  may be  terminated  by either  party upon
thirty  (30) days  notice  (i) by reason of a  material  breach  (other  than as
provided in clauses (ii) or (iii) below) if the breaching  party fails to remedy
such  breach  within  ninety  (90) days  after  written  notice  thereof  by the
non-breaching  party,  (ii) if the other party fails to make any payments of any
kind as and when due in  accordance  with the  terms  and  procedures  set forth
herein  and such  failure  is not  remedied  within  forty  five (45) days after
written notice thereof by the nonbreaching party (unless and to the extent there
exists a good faith  dispute as to the amount of any such  payment due) or (iii)
upon the  bankruptcy,  insolvency,  dissolution  or winding up the other  party,
except, in the case of a petition  relative to any of the immediately  foregoing
filed  involuntarily  against a party if such petition is dismissed within sixty
(60) days of the date of its filing.

                  (b) Unless renewed in writing by both Palatin and Mallinckrodt
or unless terminated earlier in accordance herewith, this Agreement shall expire
on and as of the end of the calendar quarter  subsequent to the calendar quarter
in which the last  commercial  sale of Product  Units of any LeuTech  Product by
Mallinckrodt occurs. This Agreement shall expire if, after the date of the First
Commercial Sale of any LeuTech Product, there are no commercial sales of LeuTech
Products for two full calendar quarters.

         9.3      Effect of Expiration or Termination of this Agreement.

                  (a) The  expiration or  termination  of this Agreement for any
reason shall not relieve the parties of any  obligation  that  accrued  prior to
such expiration or termination. Furthermore, notwithstanding any other provision
hereof,  the  expiration or  termination  of this Agreement for any reason shall
have no effect whatsoever on (i) the rights of either party under the provisions
of Sections  5.2,  5.3,  5.4, 5.5 and 5.6 above or (ii) the issuance and sale of
the Preferred Stock.

                  (b) In the event that this Agreement is rightfully  terminated
by Palatin  pursuant to Section 9.2(a),  Palatin shall be entitled to claim from
Mallinckrodt  in a court of competent  jurisdiction  all damages or other relief
which  would  otherwise  be  available  to  Palatin  at law or in equity and the
following shall also apply:

                           (i) all licenses and rights  granted to  Mallinckrodt
         hereunder  shall  terminate,  on and as of the  effective  date of such
         termination  (except for any license granted by Palatin to Mallinckrodt
         pursuant to the last sentence of Section 6.2 above);

                           (ii)  for a  period  of one (1)  year  following  the
         effective date of termination Mallinckrodt may dispose of its inventory
         of Product Units on hand as of the effective  date of  termination  and
         may fill any orders for Product Units  accepted  prior to the effective
         date of termination,  and within thirty (30) days after  disposition of
         such inventory and  fulfillment of such orders (and in any event within
         thirty (30) days after the first  anniversary  of the effective date of
         termination)  Mallinckrodt  will  forward to Palatin a final  report of
         sales activity containing the details required by Section 5.9(b) hereof
         and   Mallinckrodt   shall  pay  all  Royalty  Payments  payable  as  a
         consequence  of the Net  Sales of  Product  Units  for such  period  as
         reflected in such report;

                           (iii)  Mallinckrodt  shall take all action reasonably
         necessary  to  assign  all of its  right,  title  and  interest  in any
         trademark or trade name owned by Palatin under which Mallinckrodt shall
         have  marketed or sold  LeuTech  Products,  together  with the goodwill
         associated  therewith,  to Palatin (provided that, this provision shall
         not affect Mallinckrodt's right to any trademark or trade name owned by
         Mallinckrodt); and

                           (iv)  Mallinckrodt  shall,  (A) to the extent legally
         permissible,  take all additional action reasonably necessary to assign
         all of its right,  title and interest in, and transfer  possession  and
         control to,  Palatin of the  regulatory  filings  (if any)  prepared by
         Mallinckrodt,   and   regulatory   approvals   if  (any)   received  by
         Mallinckrodt,  to the extent that such filings and approvals  relate to
         LeuTech  Products  and (B)  deliver  to Palatin at the end of the first
         anniversary  of the  effective  date  of  termination  all  Information
         supplied by Palatin to Mallinckrodt.

                  (c) In the event that this Agreement is rightfully  terminated
by Mallinckrodt  pursuant to Section 9.2(a),  Mallinckrodt  shall be entitled to
claim from  Palatin in a court of  competent  jurisdiction  all damages or other
relief which would  otherwise be available to  Mallinckrodt  at law or in equity
and the following shall also apply:

                           (i)  Mallinckrodt's  license rights under Section 2.1
         hereof  (exclusive  of any rights  under the MCA 480 Cell Line  License
         Agreement  between  the Wistar  Institute  of Anatomy  and  Biology and
         Palatin dated June 16, 1997,  hereinafter the "Wistar Agreement") shall
         (notwithstanding  any other  provisions  hereof)  be  considered  to be
         exclusive,  perpetual  and  irrevocable,  and  shall not  otherwise  be
         restricted  or limited in any manner  from the  license  granted as set
         forth herein,  except that Mallinckrodt  shall continue to make Royalty
         Payments to Palatin in accordance with the provisions of Section 5.9;

                           (ii) Palatin shall  continue to  manufacture  LeuTech
         Products for  Mallinckrodt,  at Palatin's  Product Direct Cost for such
         manufacture  (i.e.,  not at the  Transfer  Price  that  may  then be in
         effect), for a period of up to three (3) years after the effective date
         of such termination or, at Mallinckrodt's option, and as soon after the
         effective  date of such  termination  as possible  (but in any event no
         later than six (6) months thereafter),  shall transfer to Mallinckrodt,
         on a non-exclusive  basis, such contractual rights (i.e.,  rights under
         its contracts with all third party contract manufacturers,  consultants
         or other  subcontractors) and such rights to its intellectual  property
         and such know-how as may be necessary to enable Mallinckrodt or a third
         party or parties  designated by  Mallinckrodt  to  manufacture  LeuTech
         Products  in  sufficient  quantity  thereafter  to meet  Mallinckrodt's
         requirements for LeuTech Products;

                           (iii)  Palatin  shall  (A)  to  the  extent   legally
         permissible,  take all actions  necessary to assign to Mallinckrodt all
         of the  regulatory  filings  and  approvals  Palatin  has  that  may be
         necessary or useful to  Mallinckrodt  in exercising  its license rights
         and  manufacturing  rights  as set  forth  in  clauses  (i)  and  (ii),
         respectively,  of  this  subsection  (c) or if such  assignment  is not
         readily  available,  take all actions available to it in support of any
         new filings or approvals made or sought by Mallinckrodt, (B) deliver to
         Mallinckrodt copies any and all documents it has containing Information
         or other  data  that may be  necessary  or useful  to  Mallinckrodt  in
         exercising its license rights and manufacturing  rights as set forth in
         clauses  (i) and (ii),  respectively,  of this  subsection  (c),  which
         Information  may be employed by  Mallinckrodt  as needed in  connection
         with such rights subject to the  requirements of Article 7 hereof,  (C)
         grant to  Mallinckrodt  a  non-exclusive,  worldwide,  paid-up  license
         (including the goodwill associated  therewith) to the rights of Palatin
         in and to any trademarks or trade names under which  Mallinckrodt shall
         have  marketed  or sold  LeuTech  Products  at any  time  prior  to the
         effective date of  termination,  and (D) deliver to Mallinckrodt at the
         end of the first (1st) anniversary of the effective date of termination
         all Information supplied by Mallinckrodt to Palatin; and

                           (iv) Palatin shall assign its rights under the Wistar
Agreement to Mallinckrodt.

         9.4  Survival.   The  provisions  of  this   Agreement   shall  survive
termination or expiration to the extent necessary for them to be fully performed
in accordance with their express terms.

                                   Article 10

                                  MISCELLANEOUS

         10.1 Force  Majeure.  Neither party shall be held liable or responsible
to the  other  party  nor be deemed to have  defaulted  under or  breached  this
Agreement  for failure or delay in  fulfilling  or  performing  any term of this
Agreement  when such failure or delay is caused by or results from causes beyond
the control of the affected  party,  including but not limited to fire,  floods,
embargoes,  war,  acts of war (whether  war is declared or not),  insurrections,
riots,  civil commotions,  the existence or administration of any laws, rules or
regulations, strikes, lockouts or other labor disturbances, acts of God or acts,
omissions or delays in acting by any governmental  authority or the other party;
provided,  however,  that the party so affected shall use reasonable  commercial
efforts to avoid or remove such  causes of  nonperformance,  and shall  continue
performance hereunder with reasonable dispatch whenever such causes are removed.
Each party shall provide the other party with prompt written notice of any delay
or failure to perform that occurs by reason of force majeure.  The parties shall
mutually  seek a  resolution  of the delay or the  failure  to  perform as noted
above.

         10.2  Assignment.  This  Agreement  may not be  assigned  or  otherwise
transferred  by either  party  without  the prior  written  consent of the other
party,  except that,  either Palatin or Mallinckrodt  may, without such consent,
assign its rights and obligations under this Agreement, (i) in connection with a
corporate reorganization,  to any Affiliate, or (ii) to an unrelated third party
in connection with a merger,  consolidation  or sale of  substantially  all of a
party's assets to such unrelated  third party (which shall include,  in the case
of  Mallinckrodt,  a sale of substantially  all of the assets of  Mallinckrodt's
Imaging  Group);  provided  that,  in the case of either  clause (i) or (ii) the
assigning or transferring  party's rights and  obligations  under this Agreement
shall be assumed in writing by its successor in interest in any such transaction
and shall not be transferred separate from all or substantially all of its other
business  assets  (except  as  otherwise  specifically  noted  with  respect  to
Mallinckrodt),  including  those  business  assets  that are the subject of this
Agreement. Any purported assignment in violation of the preceding sentence shall
be void.  Any permitted  assignee  shall assume all  obligations of its assignor
under this Agreement.

         10.3  Severability.  Should one or more provisions of this Agreement be
or become  invalid or  unenforceable,  the parties hereto shall  substitute,  by
mutual  consent,   valid  and   enforceable   provisions  for  such  invalid  or
unenforceable  provisions  which new  provisions,  in their  economic  and other
effects,  are sufficiently  similar to the invalid or  unenforceable  provisions
that it can be reasonably assumed that the parties would have originally entered
into this Agreement with such new provisions. In case such new provisions cannot
be agreed upon, the invalidity or  unenforceability of one or several provisions
of this Agreement  shall not affect the validity of this Agreement as a whole or
the  validity  of any  portions  hereof,  unless the  invalid  or  unenforceable
provisions are of such  essential  importance to this Agreement that it is to be
reasonably  assumed that the parties would not originally have entered into this
Agreement without such invalid or unenforceable provisions.

         10.4 Notices. Any consent, notice or report required or permitted to be
given or made under this  Agreement  by one of the  parties  hereto to the other
shall  be in  writing,  delivered  personally  or  by  facsimile  (and  promptly
confirmed  by  telephone,  personal  delivery or  courier)  or courier,  postage
prepaid  (where  applicable),  addressed  to such  other  party  at its  address
indicated  below,  or to such  other  address as the  addressee  shall have last
furnished in writing to the addressor and shall be effective upon receipt by the
addressee.

           If to Palatin:          Palatin Technologies, Inc.
                                   214 Carnegie Center, Suite 100
                                   Princeton, New Jersey  08540
                                   Telephone:  (609) 520-1911
                                   Facsimile:  (609) 452-0880

           with a copy to:         Graham & James LLP
                                   885 Third Avenue, 21st floor
                                   New York, New York  10022-4834
                                   Attn:     Faith Charles, Esq.
                                   Telephone :  (212) 848-1000
                                   Facsimile:  (212) 688-2449

           If to Mallinckrodt:     Mallinckrodt Inc.
                                   675 McDonnell Boulevard
                                   P.O. Box 5840
                                   St. Louis, Missouri 63134
                                   Attn:     President, Imaging Group
                                   Telephone:
                                   Facsimile:

           with a copy to:         Mallinckrodt Inc.
                                   675 McDonnell Boulevard
                                   P.O. Box 5840
                                   St. Louis, Missouri 63134
                                   Attn:     Vice President and General Counsel
                                   Telephone:     (314) 654-5240
                                   Facsimile:    (314) 654-5366


         10.5  Applicable Law. This Agreement shall be governed by and construed
in accordance  with the laws of the State of New York,  without giving effect to
its choice of laws provisions that might apply the law of another jurisdiction.

         10.6     Dispute Resolution.

                  (a) The parties  hereby  agree that they will  attempt in good
faith to resolve  any  controversy  or claim  arising out of or relating to this
Agreement  promptly by negotiations  and, where provided for, in accordance with
any  specific  provisions  for dispute  resolution  set forth  elsewhere in this
Agreement. If a controversy or claim should arise hereunder, the representatives
of the parties will confer at least once and will attempt to resolve the matter.
Except as specifically  provided elsewhere in this Agreement,  if the matter has
not  been  resolved  within  sixty  (60)  days  of  their  first  meeting,   the
representatives shall refer the matter to the Chief Executive Officer of Palatin
and the President of  Mallinckrodt's  Imaging Group.  If the matter has not been
resolved  within  sixty (60) days of the first  meeting  of the Chief  Executive
Officer of Palatin and the  President  of  Mallinckrodt's  Imaging  Group (which
period may be extended by mutual  agreement),  subject to a party's rights in an
appropriate case to seek injunctive relief or specific  performance from a court
of appropriate  jurisdiction,  and unless  otherwise  specifically  provided for
herein,  any  controversy or claim arising out of or relating to this Agreement,
or the breach thereof,  will be settled as set forth in subsection (b) set forth
immediately below.

                  (b)  Subject to the  provisions  of  subsection  (a) set forth
immediately  above,  all  disputes,  controversies  or  differences  which arise
between the parties  out of or in relation to this  Agreement  or any default or
breach thereof will be resolved by  arbitration in accordance  with the American
Arbitration  Association by one or more arbitrators appointed in accordance with
the said Rules.  The  arbitration  shall take place in New York. Any decision or
award  resulting  from the  arbitration  provided  for herein shall be final and
binding  on  the  parties  hereto.  Notwithstanding  the  immediately  foregoing
provisions of this  subsection  (b),  without resort to arbitration in the first
instance,  either  party  has the  right to bring  suit in a court of  competent
jurisdiction  against the other  party for (i) any breach of such other  party's
duties of  confidentiality  pursuant  to Article 7 of this  Agreement,  (ii) any
infringement of its own proprietary  rights by the other party,  (iii) or in any
other  circumstance  in which the  right to bring  suit is  contemplated  by the
express language hereof.  Judgment upon the arbitrator's award may be entered in
any court of competent  jurisdiction.  The award of the  arbitrator  may include
compensatory  damages against either party, but under no circumstances  will the
arbitrator be  authorized to award  punitive  damages,  consequential,  special,
exemplary,  indirect or multiple damages against either party. The parties agree
not to institute any litigation or proceedings  against each other in connection
with this  Agreement  unless  they have  complied  with the  provisions  of this
subsection (b), as they may be applicable,  unless otherwise provided or allowed
herein.  The fees and  expenses  associated  with  arbitration  shall be  shared
equally between Palatin and Mallinckrodt.

         10.7 Public  Announcements.  The parties agree that press  releases and
other  public  announcements  to be made by either of them in  relation  to this
Agreement, including disclosing the name of the other party, shall be subject to
the written consent of the other party,  which consent shall not be unreasonably
withheld or delayed, except that the parties may (without such consent) (i) make
any such press release that is required to be made by law, if the consent of the
other party has been sought but has not been timely  obtained  after  reasonable
efforts to do so and (ii)  disclose any  information  covered by a prior consent
obtained in accordance with this Section 10.7. The parties will agree to issue a
joint press release immediately  following the execution of this Agreement,  the
form and content of which shall be reasonably satisfactory to both parties.

         10.8 Entire Agreement.  This Agreement,  together with the exhibits and
appendices hereto, contains the entire understanding of the parties with respect
to  the  subject   matter  hereof.   All  express  or  implied   agreements  and
understandings,  either oral or written, heretofore made are expressly merged in
and made a part of this  Agreement.  This Agreement may be amended,  or any term
hereof  modified,  only by a written  instrument  duly  executed  by  authorized
representatives of both parties hereto.

         10.9 Headings. The captions to the several articles and sections hereof
are not a part of this  Agreement,  but are merely guides or labels to assist in
locating and reading the several articles and sections hereof.

         10.10  Waiver.  The waiver by a party hereto of any right  hereunder or
the  failure  of a party to object on any  occasion  to a breach or  failure  of
performance  by the other party shall not be deemed a waiver of a party's  other
rights hereunder or its right, on any subsequent occasion, to object to a breach
by the other party of any terms hereof or to insist upon the  performance by the
other party of its obligations hereunder.

         10.11  Counterparts.  This  Agreement  may be  executed  in two or more
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

         10.12  Agreement  Not to  Solicit  Employees.  During  the term of this
Agreement  and for a  period  of two  (2)  years  following  the  expiration  or
termination of this  Agreement,  Palatin and  Mallinckrodt  agree not to seek to
persuade or induce any employee of the other company to  discontinue  his or her
employment  with that company in order to become  employed by or associated with
any business, enterprise or effort that is associated with its own business.



<PAGE>


           IN WITNESS  WHEREOF,  the parties have executed this  Agreement as of
the date first set forth above.

PALATIN TECHNOLOGIES, INC.




By:      /ss/ Edward J. Quilty






MALLINCKRODT INC.




By:      /ss/ Richard T. Higgons



<PAGE>


                       LIST OF EXHIBITS

       Exhibit A  Development Costs - Overhead Cost Allocation Principles

       Exhibit B  Launch and Pre-Launch Activities

       Exhibit C  Chemical Structure of LeuTech Compound

       Exhibit D  Palatin Patent Rights

       Exhibit E  Certificate of Designation for Preferred Stock

       Exhibit F  Available LeuTech Products

       Exhibit G  Characteristics of Preferred Stock

       Exhibit H  Promissory Note

       Exhibit I  Security Agreement




<PAGE>

                                   EXHIBIT "A"

                           PALATIN TECHNOLOGIES, INC.
                           Cost Allocation Principles



[INFORMATION OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2.]


<PAGE>


                                    EXHIBIT B
                        Launch and Pre-Launch Activities
Launch Plan

o   Design and establishment of sales and marketing programs

o   Establishment of distribution network

o   Design and production of sales aids  oabCreation  and  distribution of sales
    brochures

o   Design and execution of product premium programs

o   Establishment of a journal advertising campaign

o   Design and distribution of educational package for radiopharmacies

o   Design and production of direct mail offerings

o   Establishment of sampling program

o   Design and production of journal advertisements

o   Trade show scheduling and attendance

o   Creation of trade show displays

o   Establishment of a Physician Advisory Board

o   Scheduling of symposia and speaker program

o   Design and establishment of Internet based information/advertising

o   Creation and distribution of physician information packages

o   Establishment of a speakers' bureau

o   Development of a Phase IV protocol



<PAGE>


                                    EXHIBIT C
                          (LeuTech Biological Molecule)

The biological  molecule that is the active component of LeuTech is [INFORMATION
OMITTED AND FILED SEPARATELY WITH THE COMMISSION UNDER RULE 24b-2.]






<PAGE>


         EXHIBIT D
                             (Palatin Patent Rights)

United States Patents:



<PAGE>


1.  U.S.  Patent  No.   5,346,687,   Issued   September  13,  1994,  for  Direct
    Radiolabeling  of Antibody  against  Stage  Specific  Embryonic  Antigen for
    Diagnostic Imaging

2.  U.S. Patent No.  RE35,500,  issued May 6, 1997, for Direct  Radiolabeling of
    Antibodies  and Other  Proteins  with  Technetium  for Rhenium by  Regulated
    Reduction

3.  U.S.  Patent No.  RE35,457,  issued  February  18, 1997,  for  Radiolabeling
    Antibodies  and Other  Proteins  with  Technetium  or Rhenium  by  Regulated
    Reduction

      Corresponding Australian patent No. 650629
      Canadian patent application No. 2,065,299-3
      EP No. 0 486 622 B1 - Confirmed in Austria, Belgium, Denmark, France,
      Germany, Italy, Netherlands, Spain, Sweden, Switzerland and United Kingdom
      Japanese application No. 2-514515

4.  U.S.  Patent  4,917,878,   issued  April  17,  1990,  for  Novel  Use  of  a
    Radiolabeled  Antibody  against  Stage  Specific  Embryonic  Antigen for the
    Detection  of Occult  Abscesses  in Mammals  (Subject  to License  Agreement
    between Thomas Jefferson University and RhoMed, Incorporated)

5.  U.S.  Patent  5,011,676,  issued  April 30,  1991,  for  Improved  Method to
    Directly  Radiolabel  Antibodies for Diagnostic Imaging and Therapy (Subject
    to  License  Agreement  between  Thomas  Jefferson  University  and  RhoMed,
    Incorporated)

6.  U.S. Patent 5,308,603, issued May 3, 1994, for Method to Directly Radiolabel
    Antibodies for Diagnostic  Imaging and Therapy (Subject to License Agreement
    Between Thomas Jefferson University and RhoMed, Incorporated)

License Agreements:

1.  MCA 480 Cell Line License  Agreement between The Wistar Institute of Anatomy
    and Biology and Palatin Technologies, Inc. dated May 1997.



                                        1


<PAGE>


2.  License   Agreement   between  Thomas   Jefferson   University  and  RhoMed,
    Incorporated effective as of February 1, 1992.








                                        2





<PAGE>


                                    EXHIBIT E

                           CERTIFICATE OF DESIGNATIONS
                                       of
                      SERIES C CONVERTIBLE PREFERRED STOCK
                                       of
                           PALATIN TECHNOLOGIES, INC.

[Filed  separately as Exhibit 3.7 to Palatin's  annual report on Form 10-KSB for
the year ended June 30, 1999, filed with the SEC on September 28, 1999.]






<PAGE>


                                    EXHIBIT F
                          (Available LeuTech Products)

LeuTech Products


1.  LeuTech  kit  for  producing  99mTc   radiolabeled  RB5  IgM  for  injection
    containing  one (1)  [INFORMATION  OMITTED  AND  FILED  SEPARATELY  WITH THE
    COMMISSION UNDER RULE 24b-2.]






<PAGE>


                           Palatin Technologies, Inc.

                                    Exhibit G

o   Warrants and options  outstanding  as of August 10, 1999  totaled  4,692,999
    (See common stock dilution table attached)

o   Existing employment agreements with anti-dilution provisions include:

        o   Edward Quilty

        o   Charles Putnam

        o   Carl Spana

        o   Stephen T. Wills

        o   A summary of  anti-dilution  protections  in  employment  agreements
            follows:

                  Edward J. Quilty: Palatin must issue additional  anti-dilution
                  options at $.20 per share,  so that Mr. Quilty  shall,  at all
                  times, have options in the aggregate to purchase the number of
                  shares of common stock (together with common stock  previously
                  purchased on the exercise of such  options)  equal to not less
                  than 3.75% of the outstanding  common stock on a fully diluted
                  basis. The amount of common stock purchasable will be adjusted
                  proportionately  in the  event of any  stock  dividend,  stock
                  split, recapitalization, exchange, merger, etc.

                  Charles L. Putnam, Carl Spana and Stephen T. Wills: If Palatin
                  issues new common stock or common stock derivative  securities
                  which  increase  the  outstanding  common stock by 40% or more
                  over the  amount  outstanding  at the time of the  agreements,
                  then Palatin must issue additional  options at $2.50 per share
                  so that each of the three officers has options to purchase the
                  same percentage of the outstanding common stock as he was able
                  to purchase  before the  issuance of the new  securities.  The
                  amount  of  common   stock   purchasable   will  be   adjusted
                  proportionately in the event of any stock dividend,


<PAGE>


                  stock split, recapitalization exchange, merger, etc.

                  Such  contracts  are on file with the SEC (via Edgar) and will
                  be provided on request.

o Warrants (five groups) containing anti-dilution provisions
         (price protection) include:

        o   Class A Warrants

        o   Class A Placement Warrants

        o   Class B Warrants

        o   Class B Placement Agent Warrants

        o   Common Stock Placement Agent Warrants

        o   See Provisions relating to Price Protection (I and II)


o Securities with  anti-dilution  provisions  (price  protection)  include  the
         Series A Preferred issue.


        o   See Provisions relating to Price Protection (III)




<PAGE>




                           PALATIN TECHNOLOGIES, INC.
                           COMMON STOCK DILUTION TABLE
                              AS OF AUGUST 10, 1999

All stock amounts for derivative securities represent the maximum issuable if an
entire class were exercised  together,  making no allowance for  cancellation of
fractional  shares  upon  individual  exercise.  The  39,186  shares of Series A
Convertible  Preferred  Stock  outstanding  and  the  warrants  to  purchase  an
additional  13,362 shares of Series A Convertible  Preferred Stock are stated as
if  converted  to common  stock at the  adjusted  conversion  price of $4.67 per
share.  The 12,875  non-voting  shares of Series B Convertible  Preferred  Stock
outstanding  are stated as if converted to common stock at the reset  conversion
price of $3.52 per share.

<TABLE>
<CAPTION>

- ----------------------------------------------------------- ------------------
                          Class                                  Amount                      Comment
- ----------------------------------------------------------- ------------------
<S>                                                                <C>         <C>
Common Stock outstanding (actual):                                  7,215,560
- ----------------------------------------------------------- ------------------
*Series A Conv. Prfd. @ $4.67 conversion price                        839,100
- ----------------------------------------------------------- ------------------
Series A Conv. Prfd. converted, issuance pending                       12,504  Masada and Vinson Trust
- ----------------------------------------------------------- ------------------
Series A Conv. Prfd. converted, make-up due                             5,623  to be issued to holders who
                                                                               converted at $4.87
- ----------------------------------------------------------- ------------------
Series A Conv. Prfd. converted, make-up due                               578  to be issued to holders who
                                                                               converted at $4.68
- ----------------------------------------------------------- ------------------
Series B Conv. Prfd. @ $3.52 conversion price                         365,767
- ----------------------------------------------------------- ------------------
Series B Conv. Prfd. converted, issuance pending                            0
- ------------------------------------------------------------------------------ -------------------------------------
                    Total Common Outstanding, with Preferred As If Converted:                             8,439,132
- ----------------------------------------------------------- ------------------ -------------------------------------
                         Warrants
- ----------------------------------------------------------- ------------------
Common Stock Warrants ('98-'99 offering)                              939,250  exercise prices:  $4.375 & $4.70
- ----------------------------------------------------------- ------------------
Placement/Consulting warrants ('98-'99 offering)                      254,600    exercise prices: $3.75 to $4.70
- ----------------------------------------------------------- ------------------
Common Stock Warrants ('99 offering)                                  565,629  exercise prices:  $4.48 to $5.06
- ----------------------------------------------------------- ------------------
Placement Warrants ('99 offering)                                     114,073  exercise prices:  $4.48 to $5.57
- ----------------------------------------------------------- ------------------
*Placement Warrants (Series A Conv. Prfd.)                            286,145  effective exercise price:  $5.137
- ----------------------------------------------------------- ------------------
*Class A Warrants                                                      65,668  exercise price:  $0.22
- ----------------------------------------------------------- ------------------
*Placement Agent Warrants (Class A)                                    20,737  exercise price:  $0.22
- ----------------------------------------------------------- ------------------
*Class B Warrants                                                      30,766  exercise price:  $2.64
- ----------------------------------------------------------- ------------------
*Placement Agent Warrants (Class B)                                     2,334  exercise price:  $5.43
- ----------------------------------------------------------- ------------------
Class C Warrants                                                       69,124  exercise price:  $8.68
- ----------------------------------------------------------- ------------------
*Placement Agent Warrants (RhoMed offering)                           212,329  exercise price:  $5.43
- ----------------------------------------------------------- ------------------
*McInerney (Fin. Serv. Adv. Agr.) Warrants                             17,052  exercise prices:  $6.45 to $6.56
- ----------------------------------------------------------- ------------------
Old Interfilm Warrants                                                  1,875  exercise price:  $282.00
- ------------------------------------------------------------------------------ -------------------------------------
                                           Total of All Outstanding Warrants:                             2,579,582
- ----------------------------------------------------------- ------------------ -------------------------------------
                         Options
- ----------------------------------------------------------- ------------------
1996 SOP (Palatin)                                                  1,564,277  includes 225,000 granted 7/8/99
- ----------------------------------------------------------- ------------------
1995 EISOP (RhoMed)                                                    80,359
- ----------------------------------------------------------- ------------------
1995 NQSOP (RhoMed)                                                    40,114
- ----------------------------------------------------------- ------------------
1993 EIP (Interfilm)                                                      750
- ----------------------------------------------------------- ------------------
1987 EISOP (RhoMed)                                                    25,368
- ----------------------------------------------------------- ------------------
1987 NQSOP (RhoMed)                                                    38,478
- ----------------------------------------------------------- ------------------
Quilty anti-dilution options through 3/24/98                          106,609
- ----------------------------------------------------------- ------------------
other options: 1997 Exec. Off. SOA = 103,004. Spana SOA =             257,462
74,196.  Putnam SOA = 74,196.  Murphy SOA = 6,066.
- ------------------------------------------------------------------------------ -------------------------------------
                                            Total of All Outstanding Options:                             2,113,417
- ------------------------------------------------------------------------------ -------------------------------------
                                 Total of All Outstanding Warrants & Options:                             4,692,999
- ----------------------------------------------------------- ------------------ -------------------------------------
                           COMBINED TOTAL (Fully Diluted):         13,132,131
- ----------------------------------------------------------- ------------------
</TABLE>


*Preferred stock and warrants with price protection.  The conversion or exercise
price of these  securities will be adjusted  downward if Palatin sells common or
common-equivalent  securities  with a per  share  price  less  than the  current
conversion  or  exercise  price  (shown in the  table).  In the case of Series A
preferred stock, the conversion price will also be adjusted  downward if Palatin
sells common or  common-equivalent  securities  with a per share price less than
the current market price of common stock.

All outstanding  derivative securities have standard  anti-dilution  protection,
preserving  their  proportional  share of  common  stock  in the  event of stock
dividends, stock splits, recapitalizations, merger, etc.




<PAGE>




         Provisions Relating to Price Protection


                           I. Selected Provisions of:

                                Class A Warrants
                        Class A Placement Agent Warrants
                                Class B Warrants
                        Class B Placement Agent Warrants
                      Common Stock Placement Agent Warrants

         These five  groups of  warrants  have  identical  provisions  for price
protection in the event of the issuance of Common Stock (including  warrants and
options)  at a price per share  less than the Per Share  Warrant  Price  then in
effect:

Section 3 (c)

                  (c) Except as provided in  Subsections  3(a) and 3(d), in case
         the Company  shall  hereafter  issue or sell any Common  Stock,  or any
         securities  convertible  into Common  Stock or any  rights,  options or
         Warrants to purchase Common Stock or securities convertible into Common
         Stock,  in each  case for a price per share or  entitling  the  holders
         thereof to purchase  Common Stock at a price per share  (determined  by
         dividing (i) the total  amount,  if any,  received or receivable by the
         Company in  consideration  of the  issuance or sale of such  securities
         plus the total  consideration,  if any,  payable  to the  Company  upon
         exercise or conversion thereof (the "TOTAL  CONSIDERATION") by (ii) the
         number of additional  shares of Common Stock  issuable upon exercise or
         conversion  of such  securities)  less than the then  current Per Share
         Warrant Price in effect on the date of such  issuance or sale,  the Per
         Share  Warrant  Price shall be adjusted as of the date of such issuance
         or sale so that the same shall equal the price  determined  by dividing
         (i) the sum of (A) the number of shares of Common Stock  outstanding on
         the date of such  issuance or sale  multiplied by the Per Share Warrant
         Price plus (B) the Total  Consideration by (ii) the number of shares of
         Common Stock  outstanding on the date of such issuance or sale plus the
         maximum  number of  additional  shares of Common  Stock  issuable  upon
         exercise or conversion of such securities.





<PAGE>


   II. Selected Provisions of Financial Advisory Services (McInerney) Warrants

There are two outstanding  Financial Advisory Services  Warrants,  which contain
identical terms including the following provisions:

Section 3(c)

                  (c) Except as provided in  subsections  3(a) and 3(d), in case
         the  Company  shall  hereafter  issue or sell  any  Common  Stock,  any
         securities  convertible  into Common  Stock or any  rights,  options or
         warrants to purchase Common Stock or securities convertible into Common
         Stock,  other  than an  offering  of  securities  for  which  Paramount
         Capital,  Inc.  serves as  placement  agent  initiated  within 180 days
         following September 1, 1996 (the "Private Placement"), in each case for
         a price per share or entitling the holders  thereof to purchase  Common
         Stock at a price  per  share  (determined  by  dividing  (i) the  total
         amount,  if any, received or receivable by the Company in consideration
         of  the   issuance   or  sale  of  such   securities   plus  the  total
         consideration,  if  any,  payable  to  the  Company  upon  exercise  or
         conversion  thereof (the "TOTAL  CONSIDERATION")  by (ii) the number of
         additional  shares  of  Common  Stock  issued,  sold or  issuable  upon
         exercise or conversion of such  securities)  less than the then current
         Market Price of the Common Stock or the current Per Share Warrant Price
         in effect on the date of such  issuance or sale,  the Per Share Warrant
         Price shall be adjusted by multiplying the Per Share Warrant Price then
         in effect by a fraction, the numerator of which shall be (x) the sum of
         (A) the number of shares of Common Stock outstanding on the record date
         of such  issuance or sale plus (B) the Total  Consideration  divided by
         either the current  Market Price of the Common Stock or the current Per
         Share Warrant Price, whichever is greater, and the denominator of which
         shall be (y) the number of shares of Common  Stock  outstanding  on the
         record  date of such  issuance  or sale  plus  the  maximum  number  of
         additional  shares  of  Common  Stock  issued,  sold or  issuable  upon
         exercise or conversion of such securities.




<PAGE>


        III. Selected Provisions of Series A Convertible Preferred Stock
                           Certificate of Designations

Section 3 (b) (i) (selected portions):

         "Market Price" of a security  shall mean the average  Closing Bid Price
         (as  defined  below) of such  security,  for  twenty  (20)  consecutive
         trading  days,  ending  with the day  prior to the date as of which the
         Market Price is being determined.

         The  "Closing Bid Price" for any security for each trading day shall be
         the  reported  closing  bid  price  of such  security  on the  national
         securities  exchange  on which such  security  is listed or admitted to
         trading,  or, if such  security is not listed or admitted to trading on
         any national securities  exchange,  shall mean the reported closing bid
         price of such  security  on the  Nasdaq  SmallCap  Market or the Nasdaq
         National Market System  (collectively  referred to as, "Nasdaq") or, if
         such  security  is not listed or  admitted  to trading on any  national
         securities  exchange  or  quoted on  Nasdaq,  shall  mean the  reported
         closing bid price of such security on the principal securities exchange
         on which such  security is listed or admitted to trading  (based on the
         aggregate dollar value of all securities listed or admitted to trading)
         or, if such security is not listed or admitted to trading on a national
         securities exchange,  quoted on Nasdaq or listed or admitted to trading
         on any other securities  exchange,  shall mean the closing bid price in
         the  over-the-counter  market  as  furnished  by any NASD  member  firm
         selected from time to time by the Corporation for that purpose.

         "Trading  day" shall  mean a day on which the  securities  exchange  or
         NASDAQ  used to  determine  the  Closing  Bid  Price  is  open  for the
         transaction  of business or the  reporting of trades or, if the Closing
         Bid Price is not so determined, a day on which such securities exchange
         is open for the transaction of business.

Section 4 (c) (i):

                  (i)  Except as  otherwise  provided  herein,  in the event the
         Corporation  shall,  at any time or from  time to time  after  the date
         hereof,(1) sell or issue any shares of Common Stock for a consideration
         per share less than  either (i) the  Conversion  Price in effect on the
         date of such sale or  issuance  or (ii) the Market  Price of the Common
         Stock as of the date of the sale or  issuance,  (2) issue any shares of
         Common Stock as a stock dividend to the holders of Common Stock, or (3)
         subdivide  or combine  the  outstanding  shares of Common  Stock into a
         greater  or  lesser   number  of  shares  (any  such  sale,   issuance,
         subdivision or  combination  being herein called a "Change of Shares"),
         then, and thereafter upon each further Change of Shares, the Conversion
         Price in effect  immediately  prior to such  Change of Shares  shall be
         changed  to a  price  (rounded  to  the  nearest  cent)  determined  by
         multiplying the Conversion Price in effect immediately prior thereto by
         a fraction,  the  numerator  of which shall be the sum of the number of
         shares of Common  Stock  outstanding  immediately  prior to the sale or
         issuance of such additional  shares or such  subdivision or combination
         and  the  number  of  shares  of  Common  Stock  which  the   aggregate
         consideration received (determined as provided in subsection 4(c)(v)(F)
         below) for the issuance of such additional shares would purchase at the
         greater  of (i) the  Conversion  Price  in  effect  on the date of such
         issuance or (ii) the Market Price as of such date, and the  denominator
         of which  shall be the  number of shares  of Common  Stock  outstanding
         immediately  after the sale or  issuance of such  additional  shares or
         such  subdivision  or  combination.   Such  adjustment  shall  be  made
         successively whenever such an issuance is made.

It should be noted that the foregoing  provides  price  protection  both for (i)
issuances  under the Conversion  Price and (ii) issuances under the Market Price
of the Common Stock.

For purposes of the foregoing,  the Certificate of Designation  further provides
the following definition:

Section 4(c)(v):

                  (v) For  purposes of Section  4(c)(i)  hereof,  the  following
         provisions (A) to (F) shall also be applicable:

                           (A) The  number  of shares  of  Common  Stock  deemed
                  outstanding  at any given  time  shall  include  all shares of
                  capital  stock  convertible  into or  exchangeable  for Common
                  Stock  and all  shares  of  Common  Stock  issuable  upon  the
                  exercise of any convertible debt, warrants  outstanding on the
                  date thereof and options outstanding on the date thereof.

Accordingly,  calculations  are  based  on  a  fully-diluted  number,  including
issuance of Common Stock on conversion of Series A Convertible  Preferred  Stock
at the Conversion Price in effect prior to the recalculation.





<PAGE>


                                    EXHIBIT H

                   SUBORDINATED NON-NEGOTIABLE PROMISSORY NOTE

$2,000,000                 St. Louis, Missouri
                                                                   May __, 1999

                  PALATIN    TECHNOLOGIES,    INC.,   a   Delaware   corporation
(hereinafter called the "COMPANY"),  for value received,  hereby promises to pay
to MALLINCKRODT INC., a Delaware corporation (hereinafter called "MALLINCKRODT")
the principal sum of Two Million  Dollars  ($2,000,000),  on the date  specified
herein  below,  and to pay simple  interest  from the date  hereof on the unpaid
principal amount hereof at the rate of 9% per annum, payable in full on the date
when the principal  amount hereof shall have become due and payable,  whether at
maturity or by acceleration  or otherwise,  and thereafter on demand at the rate
of 12% per annum on any overdue principal amount and (to the extent permitted by
applicable law) on any overdue interest until paid.

                  All payments of  principal  and interest on this Note shall be
in such coin or  currency  of the  United  States of  America  as at the time of
payment shall be legal tender for payment of public and private debts, and shall
be made at the offices of MALLINCKRODT, 675 McDonnell Boulevard, P. O. Box 5840,
St. Louis, Missouri 63134, or its successors or assigns, as applicable.

                  1. Events Requiring Payment.  The principal  hereunder and all
interest  accrued  thereon  shall be due and payable in full on the  earliest to
occur  of  either  of the  following  dates  or  events:  (i) the  execution  by
MALLINCKRODT and COMPANY of a Strategic  Collaboration Agreement relative to the
development,    manufacture,    marketing    and   sale   of    LeuTech(R),    a
radiopharmaceutical imaging product useful in imaging infection and inflamation,
or (ii) December 31, 2000. In the event of the occurrence of the event set forth
in clause (i) of the immediately preceding sentence,  the principal and interest
due hereunder will be paid by offset against  amounts  otherwise due and payable
to COMPANY by  MALLINCKRODT  as a consequence of the execution of said Strategic
Collaboration Agreement.

                  2.  Security  for  Repayment.  Repayment of this Note shall be
secured by an interest in substantially  all of the assets of COMPANY  ("Secured
Assets"),  as more fully  described in and in accordance  with the terms of that
certain Security Agreement between  MALLINCKRODT and the COMPANY attached hereto
as  Exhibit I and  expressly  made a part  hereof  (the  "Security  Agreement").
COMPANY  affirms  and  MALLINCKRODT  understands  that  the  lien  securing  the
repayment  obligations  under  this Note  shall be  secondary  in  priority  and
subordinate  to any  security  interest  held by any  banks,  lenders,  or other
financial  institutions  (collectively  "Banks") to whom the COMPANY has granted
any  security  interest  or other  lien on or prior to the date  hereof,  and in
accordance  with the terms and conditions  specifically  governing such security
interest or other liens as such terms and conditions exist on and as of the date
hereof.


<PAGE>


                  3.  Loss,  Theft,  Destruction  or  Mutilation  of Note.  Upon
receipt of evidence  reasonably  satisfactory to the COMPANY of the loss, theft,
destruction or mutilation of this Note, and, in the case of any such loss, theft
or  destruction,  upon  receipt  of an  affidavit  of loss  and  indemnity  from
MALLINCKRODT reasonably satisfactory to the COMPANY, or, in the case of any such
mutilation,  upon surrender and cancellation of this Note, the COMPANY will make
and deliver, in lieu of this Note, a new Note of like tenor and unpaid principal
amount and dated as of the original date hereof.

                  4.  Prepayment.  Upon notice given to MALLINCKRODT the COMPANY
may, at its option, prepay the Note, as a whole at any time or in part from time
to time together with interest  accrued thereon to the date of such  prepayment.
Upon  any  prepayment  of a  portion  of the  principal  amount  of  this  Note,
MALLINCKRODT,  at its option,  may require the COMPANY to execute and deliver at
the expense of the  COMPANY,  upon  surrender  of this Note,  a new Note for the
principal amount of this Note then remaining unpaid, or may present this Note to
the COMPANY for notation  hereon of the payment of the portion of the  principal
amount of this Note so prepaid.

                  5. Covenants.  The COMPANY  covenants and agrees that, so long
as any Note shall be outstanding;

                  (a) The COMPANY will promptly pay and discharge or cause to be
paid and discharged,  before the same shall become in default,  all lawful taxes
and  assessments  imposed upon the COMPANY or any  subsidiary or upon the income
and  profits  of the  COMPANY or any  subsidiary,  or upon any  property,  real,
personal or mixed, belonging to the COMPANY or any subsidiary,  or upon any part
thereof by the United States or any State thereof,  as well as all lawful claims
for labor,  materials  and  supplies  which,  if unpaid,  would become a lien or
charge upon the Secured  Assets  thereof;  provided,  however,  that neither the
COMPANY nor any subsidiary shall be required to pay and discharge or to cause to
be paid and discharged any such tax,  assessment,  charge, levy or claim so long
as the  COMPANY or its  subsidiary  (as  appropriate)  shall be  contesting  the
validity thereof in good faith by appropriate  proceedings or the COMPANY shall,
in its good faith judgment, deem the validity thereof to be questionable.

                  (b) The COMPANY will at all times  maintain and keep, or cause
to be  maintained  and  kept,  in  good  repair,  working  order  and  condition
(reasonable  wear and tear excepted) all  significant  properties of the COMPANY
and its  subsidiaries  which  are  included  in the  Secured  Assets  (including
maintenance of fees for filing or  registration  due and payable with respect to
any  intellectual  property rights included in the Secured Assets) and will from
time to time  make or cause  to be made  all  reasonably  necessary  and  proper
repairs, renewals, replacements, betterments and improvements thereto.

                                                         2


<PAGE>


                  (c) The COMPANY will keep adequately  insured,  and will cause
each of its subsidiaries to keep adequately  insured,  by financially  sound and
reputable  insurers,  all property included in the Secured Assets of a character
usually  insured  by  corporations  engaged  in the same or a  similar  business
similarly  situated  against  loss or damage of the  kinds  customarily  insured
against by such corporations.

                  (d) The COMPANY will at all times keep,  and cause each of its
subsidiaries to keep, proper books of record and account in which proper entries
will  be  made  of  its  transactions  in  accordance  with  generally  accepted
accounting principles consistently applied.

                  (e)  The  COMPANY  will do or  cause  to be  done  all  things
necessary and lawful to preserve and keep in full force and effect its corporate
existence,  rights  and  franchises  and the  corporate  existence,  rights  and
franchises  of each  of its  operating  subsidiaries;  provided,  however,  that
nothing in this paragraph (e) shall prevent (i) a consolidation or merger of, or
a sale,  transfer or disposition of all or any substantial  part of the property
and assets of the COMPANY not  prohibited  by the  provisions  of paragraph  (f)
below, or (ii) the abandonment or termination of any rights or franchises of the
COMPANY,  or  the  liquidation  or  dissolution  of,  or  a  sale,  transfer  or
disposition (whether through merger, consolidation, sale or otherwise) of all or
any  substantial  part of the  property  and  assets  of any  subsidiary  or the
abandonment or termination of the corporate existence,  rights and franchises of
any subsidiary if such abandonment, termination, liquidation, dissolution, sale,
transfer or disposition is, in the good faith business  judgment of the COMPANY,
in the best interests of the COMPANY and does not prejudice  MALLINCKRODT in any
material respect.

                  (f) The COMPANY will not consolidate or merge with or into, or
sell or otherwise  dispose of all or  substantially  all of its property to, any
other corporation or other entity, unless:

                  (i) the surviving  corporation  or other entity (if other than
the  COMPANY)  shall  expressly  and  effectively  assume in writing the due and
punctual  payment of the principal of and interest on the Note,  and the due and
punctual performance and observation of all the terms, covenants, agreements and
conditions  of this Note and the Security  Agreement to be performed or observed
by the COMPANY to the same extent as if such surviving  corporation had been the
original maker of the Note,

                  (ii) the  COMPANY or such other  corporation  or other  entity
shall not  otherwise  be in  default in the  performance  or  observance  of any
material  covenant,  agreement  or  condition  of the  Note  or of the  Security
Agreement, and



                                                         3


<PAGE>


                  (iii)   MALLINCKRODT   shall  have  received,   in  connection
therewith,  immediately  prior to the closing of such  transaction an opinion of
counsel for the COMPANY (or other counsel satisfactory to MALLINCKRODT), in form
and  substance  satisfactory  to  MALLINCKRODT,  to the  effect  that  any  such
consolidation,  merger, sale or conveyance and any such assumption complies with
the provisions of this paragraph (f).

                  6.  Events  of  Default.  If any one or more of the  following
events,  herein  called  "Events  of  Default,"  shall  occur,  for  any  reason
whatsoever, and whether such occurrence shall, on the part of the COMPANY or any
subsidiary,  be  voluntary  or  involuntary  or come  about  or be  effected  by
operation of law or pursuant to or in compliance  with any  judgment,  decree or
order of a court of competent  jurisdiction or any order,  rule or regulation of
any  administrative or other governmental  authority,  and such Event of Default
shall be continuing:

                  (a) default  shall be made in the payment of the  principal or
interest  of this Note when and as the same  shall  become  due and  payable  in
accordance with the terms provided herein, or

                  (b) default shall be made in the due observance or performance
of any other covenant,  representation,  warranty, condition or agreement on the
part of the COMPANY to be observed or performed  pursuant to the terms hereof or
pursuant to the Security  Agreement and such default  shall  continue for thirty
(30) days after receipt of written notice  thereof,  specifying such default and
requesting that the same be remedied, by the COMPANY from MALLINCKRODT, or

                  (c) the  entry of a  decree  or order  for  relief  by a court
having  jurisdiction  in  respect  of  the  COMPANY  or  any  subsidiary  in any
involuntary  case under the  federal  bankruptcy  laws,  as now  constituted  or
hereafter  amended,  or  any  other  applicable  federal  or  state  bankruptcy,
insolvency  or  other  similar  laws,  or  appointing  a  receiver,  liquidator,
assignee,  custodian, trustee, sequestrator (or similar official) of the COMPANY
or any subsidiary or for any substantial  part of any of their property,  or for
all or any  portion  of the  Secured  Assets,  or  ordering  the  winding-up  or
liquidation  of any of their affairs and the  continuance  of any such decree or
order unstayed and in effect for a period of sixty (60) days, or

                  (d) the  commencement  by the COMPANY or any  subsidiary  of a
voluntary  case  under  the  federal  bankruptcy  laws,  as now  constituted  or
hereafter  amended,  or  any  other  applicable  federal  or  state  bankruptcy,
insolvency  or  other  similar  laws,  or the  consent  by any  of  them  to the
appointment  of  or  taking  possession  by a  receiver,  liquidator,  assignee,
trustee,  custodian,  sequestrator (or other similar official) of the COMPANY or
any subsidiary or for any substantial part of their property,  or for all or any
portion of the Secured  Assets,  or the making by any of them of any  assignment
for the benefit of creditors, or
                                                         4


<PAGE>


                  (e) any default,  as defined in any  instrument  evidencing or
under  which the  COMPANY  or any  subsidiary  has  outstanding  at the time any
indebtedness  for money  borrowed  in excess of $50,000 in  aggregate  principal
amount, shall occur,

then,  MALLINCKRODT may, at its option,  by notice to the COMPANY,  declare this
Note to be, and this Note  shall  thereupon  be and  become,  forthwith  due and
payable  together with interest  accrued  thereon without  presentment,  demand,
protest or further notice of any kind, all of which are expressly  waived to the
extent permitted by law.

                   7.  Suits  for  Enforcement.  In case  any one or more of the
Events  of  Default  specified  in  Section 6 of this  Note  shall  occur and be
continuing,  MALLINCKRODT  may proceed to protect and enforce its rights by suit
in equity, action at law and/or by other appropriate proceeding, whether for the
specific  performance of any covenant or agreement  contained in this Note or in
aid of the exercise of any power granted in this Note, or may proceed to enforce
the  payment  of this Note or to  enforce  any other  legal or  equitable  right
hereunder.

                  In case of any default  under this Note,  the COMPANY will pay
to  MALLINCKRODT  such  amounts  as shall be  sufficient  to cover the costs and
expenses of  MALLINCKRODT  directly  attributable  to said  default,  including,
without  limitation,  collection  costs and reasonable  attorneys'  fees, to the
extent actually incurred.

                  8.  Remedies  Cumulative.  No  remedy  herein  conferred  upon
MALLINCKRODT  is intended to be exclusive of any other remedy and each and every
such remedy shall be  cumulative  and shall be in addition to every other remedy
given  hereunder or now or hereafter  existing at law on in equity or by statute
or otherwise.

                  9. No Waiver.  No course of dealing  between  the  COMPANY and
MALLINCKRODT  or any delay on the part of  MALLINCKRODT in exercising any rights
hereunder shall operate as a waiver of any of its rights  hereunder.  No failure
by  MALLINCKRODT  on any occasion to exercise any rights or remedies it may have
hereunder shall prejudice or operate as a waiver of any rights  MALLINCKRODT may
have on any  subsequent  occasion to enforce its rights or take advantage of its
remedies pursuant to this Note.

                  10.  Subordination.

                  (a) Anything in this Note to the contrary notwithstanding, the
obligation of the COMPANY to pay the principal of and interest on this Note, and
to  discharge  all  its  other  obligations  hereunder  or  under  the  Security
Agreement,  shall  be  subordinate  and  junior  in  right  of  payment  to  any
indebtedness  of  COMPANY  to Banks  that is  outstanding  on and as of the date
hereof.  The  obligations of the COMPANY to which this Note is  subordinate  and
junior in the right of payment in accordance with said  Subordination  Agreement
are  sometimes  herein  referred  to  as  "Senior  Debt."   MALLINCKRODT  hereby
acknowledges that the Senior Debt includes,
                                                         5


<PAGE>


without  limitation,  debt under a patent  assignment and license agreement with
Aberlyn Capital Management Limited Partnership dated as of July 15, 1993.

                  (b)  Subject  to the  payment  in  full  of all  Senior  Debt,
MALLINCKRODT  shall be subrogated to the rights of the holders of Senior Debt to
receive  payments or  distributions  of any kind or character,  whether in cash,
property,  stock or obligations  (including any delivery of the Secured Assets),
which may be payable or  deliverable  to the holders of Senior Debt.  Subject to
the rights of the holders of the Senior Debt,  in  accordance  with the terms of
any  agreements  between  any of such  holders  and  COMPANY,  to receive  cash,
property, stock or obligations otherwise payable or deliverable to the holder of
this Note,  nothing  herein  shall  either  impair,  as between  the COMPANY and
MALLINCKRODT,  the  obligation  of  the  COMPANY,  which  is  unconditional  and
absolute,  to pay  MALLINCKRODT  the  principal  hereof and  interest  hereon in
accordance   with  the  terms  and  the  provisions  of  this  Note  or  prevent
MALLINCKRODT from exercising all remedies otherwise  permitted by applicable law
or upon  default  hereunder.  In  addition,  nothing set forth  herein  shall be
construed  as having  any effect or purpose to limit or change in any manner any
rights or  remedies  MALLINCKRODT  may have  under any other  agreement  between
MALLINCKRODT  and the  COMPANY,  whether  currently  in effect or  entered  into
hereafter.

                  11. Successors and Assigns.  All the covenants,  stipulations,
promises and  agreements  in this Note  contained by or on behalf of the COMPANY
shall bind its successors and assigns, whether so expressed or not.

                  12.  Governing  Law. This Note shall be enforced and construed
in accordance  with the laws of the State of New York,  without giving effect to
its conflict of laws principles.

                  13.  Headings.  The headings of the Sections and paragraphs of
this Note are inserted for convenience only and do not constitute a part of this
Note.

                  14. Validity.  The execution and delivery of this Note and the
Security  Agreement  and  the  performance  by the  COMPANY  of its  obligations
hereunder and thereunder  have been duly  authorized by all requisite  corporate
action by the COMPANY and will not violate  any  provisions  of law,  any of the
corporate governing documents of the COMPANY or any provisions of any indenture,
agreement or other  instrument  to which  COMPANY or any of its assets is bound.
This Note has been duly  executed and  delivered by the COMPANY and  constitutes
the legal, valid and binding obligation of the COMPANY,  enforceable against the
COMPANY in  accordance  with its terms.  The execution and delivery of this Note
and the  performance by the COMPANY of its  obligations  hereunder and under the
Security Agreement does not and will not violate any judicial decree or order.

                                                         6


<PAGE>


                  IN WITNESS WHEREOF, PALATIN TECHNOLOGIES, INC. has caused this
Note to be signed in its corporate  name by one of its officers  thereunto  duly
authorized and to be dated as of the date and year first above written.

                                        PALATIN TECHNOLOGIES, INC.



                                        By:_________________________________

                                        Name:
                                        Title:





<PAGE>


                                    EXHIBIT I

                               SECURITY AGREEMENT

                  THIS SECURITY AGREEMENT (the "Security  Agreement") is entered
into as of May __, 1999,  by and among  Palatin  Technologies,  Inc., a Delaware
corporation,  with its principal executive offices in Princeton, New Jersey (the
"Debtor"),  and Mallinckrodt  Inc., a Delaware  corporation,  with its principal
offices in St. Louis, Missouri (the "Secured Party").

                  WHEREAS, on and as of the date hereof, the Debtor has executed
and delivered to Secured Party a certain Subordinated  Non-Negotiable Promissory
Note in the original principal amount of Two Million Dollars  ($2,000,000) (such
promissory  note,  and  any  and  all  amendments,  modifications,   extensions,
restatements,  renewals,  refinancings and/or replacements  thereof from time to
time being herein referred to as the "Note");

                  WHEREAS,  the  indebtedness  evidenced  by the  Note  will  be
secured  as  provided  in  Section 2  thereof  and as  consistently  hereinafter
provided; and

                  WHEREAS,  Debtor,  in  consideration of and in order to induce
Secured  Party to make the  advance  of Two  Million  Dollars  ($2,000,000)  has
determined  that it is in the best interest of Debtor and has agreed to execute,
deliver and perform this Security Agreement;

                  NOW, THEREFORE,  for valuable  consideration,  the sufficiency
and receipt of which are hereby  acknowledged,  the Debtor and the Secured Party
hereby agree as follows:

                  1.  Definitions.  As  used  in this  Security  Agreement,  the
following  terms,  which are in  addition  to terms  defined  elsewhere  in this
Security Agreement, shall have the respective meanings as listed below:

                  "Accounts"  shall mean (i) any right to payment  for  services
rendered  and/or for goods sold or leased,  now or hereafter owing to or held by
Debtor,  whether such right to payment be  classified  by law as an  instrument,
chattel paper,  contract right, account,  general intangible or otherwise,  (ii)
the security, if any, for such right to payment, (iii) Debtor's right, title and
interest (including,  without limitation, any applicable right of reclamation or
stoppage in transit) in or to the personal property, if any, that is the subject
of such right to payment,  and (iv) all books, ledgers and records pertaining to
such right to payment (whether written or electronic),  all whether now owned or
hereafter acquired by Debtor.

                  "Deposit  Accounts"  means  any  and all  accounts,  deposits,
investments, monies, securities or other property of Debtor.




<PAGE>


                  "Equipment"  shall mean all machinery,  computer  hardware and
software,  equipment,  appliances,  furniture,  fixtures,  tools,  supplies  and
tangible  personal  property  (except  Inventory) of every kind and description,
including but not limited to, property  included within the term  "Equipment" as
defined in the UCC, now owned or hereafter acquired by Debtor.
                  "General  Intangibles"  shall mean all  property  (other  than
Accounts, Equipment, Inventory, and Deposit Accounts) including, but not limited
to,  all  rights  in  patents,   patent   applications,   trademarks  and  other
intellectual property, choses in action, contract rights, tax refunds, rights in
respect of employee  benefit plan  assets,  trademarks,  trade names,  licenses,
consents,   permits,   marketing   agreements,   copyrights,   customer   lists,
identification of suppliers,  data, plans,  specifications,  recorded knowledge,
manuals,  standards,  catalogs, books, records, sales data and other information
relating  to  sales,  certifications  and  approvals  of  governmental  agencies
pertaining to Debtor's  operations or business,  all rights of Debtor to receive
return of deposits  and trust  payments,  all  judgments,  awards and  warehouse
receipts,  in each case  whether now owned or  hereafter  acquired by Debtor and
whether now existing or hereafter arising.

                  "Inventory"  shall mean all  merchandise,  finished goods, raw
materials, work in process, packaging, supplies, all types of property of Debtor
included  within the term  "Inventory"  as defined in the UCC and other tangible
personal  property held for sale or lease or furnished or to be furnished  under
contracts of service or used or consumed in Debtor's business, wherever located,
whether  now  owned  or  hereafter  acquired  by  Debtor   (including,   without
limitation,  goods which are returned to or  repossessed  by Debtor) and whether
now existing or hereafter arising.

                  "Secured  Assets"  shall mean and  include  all  property  and
interests therein of every kind and description  (tangible or intangible,  real,
personal or mixed),  wherever  located,  now owned or hereafter  acquired by the
Debtor and  whether  now  existing  or  hereafter  arising,  including,  without
limitation,  (i) all Accounts, (ii) all Equipment, (iii) all Inventory, (iv) all
General  Intangibles,  (v) all  Deposit  Accounts,  (vi) all  accessions  to and
products of any of the foregoing,  (vii) all additions to, or  substitutions  or
replacements  for any of the foregoing,  (viii) all proceeds of, or from, any of
the foregoing,  (including insurance proceeds,  whether or not the Secured Party
is the loss  payee  thereunder),  and (ix) in all  cases,  whether  now owned or
existing or hereafter acquired or arising.

                  "UCC" shall mean the Uniform  Commercial  Code as amended from
time to time,  and any successor  statute,  enacted and in effect at any time in
the State of New York.

                                                         2


<PAGE>


                  2.  Definitions  Incorporated.  The  following  terms  as used
herein have the meanings given to them in the Note: "Banks," "Event of Default,"
and  "Senior  Debt." In the event that the Note is from time to time  amended or
modified  or  any  instrument  is  substituted  in  replacement  thereof,   such
amendment,  modification or substitution shall, from and after the date thereof,
be  included  within the  definition  of the "Note" as used  herein.  Terms used
herein, if not otherwise  defined herein,  shall have the meanings given them in
the UCC as enacted and as from time to time in effect in New York.

                  3.  Security  Interest.  The Debtor,  and its  successors  and
assigns,  hereby give and grant to the Secured Party a security  interest in all
the Secured Assets and all of their right,  title and interest therein,  whether
now owned or  existing or  hereafter  acquired  or  arising,  together  with all
proceeds  therefrom  to secure (i) the payment of all  principal of and interest
heretofore or hereafter  owing or outstanding  on the Note  (including any notes
substituted therefor),  (ii) the payment by the Debtor of all costs and expenses
(including  reasonable  attorneys'  fees)  incurred by the Secured  Party in the
collection  of amounts due under the Note or in  enforcing  its rights under the
Note or this Security  Agreement and (iii) the  performance by the Debtor of all
its  obligations  under the Note or this Security  Agreement.  The foregoing set
forth in clauses (i), (ii) and (iii) of the previous  sentence shall hereinafter
be referred to as the "Obligations."  Anything in this Security Agreement to the
contrary notwithstanding, the Obligations are subordinate and junior in right of
payment to any rights of the Senior  Debt,  as those rights may appear and exist
on and as of the date hereof.

                  4. Debtor  Remains  Liable.  Anything  herein to the  contrary
notwithstanding,  (i)  Debtor  shall  remain  liable  under  all  contracts  and
agreements  included  in the Secured  Assets to the extent set forth  therein to
perform all of its duties and  obligations  thereunder  to the same extent as if
this Security Agreement had not been executed,  (ii) the exercise by the Secured
Party of any of its rights  hereunder  shall not release  Debtor from any of its
duties or obligations under the contracts and agreements included in the Secured
Assets,  and (iii) the Secured Party shall not have any  obligation or liability
under  the  contracts  and  agreements  included  in the  Secured  Assets  or be
obligated to perform any of the obligations or duties of Debtor thereunder or to
take any action to collect or enforce any claim for payment assigned hereunder.

                  5.  Accounts.  Subject  to the rights of holders of the Senior
Debt as described in Section 10 of the Note,  with respect to Accounts  included
within the Secured Assets, Debtor covenants and agrees as follows:

                  (a)  Subject to the  rights of  holders of the Senior  Debt as
         described  in  Section  10 of the Note,  the  Debtor  shall,  after the
         occurrence  and during  the  continuance  of an Event of Default  which
         remains uncured (if by the express

                                                         3


<PAGE>


         terms of the  Note it may be  cured),  at the  request  of the  Secured
         Party,  execute and  deliver a form of  agreement  satisfactory  to the
         Secured  Party  and its  counsel,  establishing  a lock  box  and  cash
         collateral arrangement with the Secured Party.

                  (b) In the event a  government  (including  the United  States
         Government, the government of any state or any local government) or any
         department,  agency,  instrumentality  or  subdivision  thereof  is  an
         account debtor or obligor on any Accounts or is a party to any contract
         or order out of which will arise an Account,  the Debtor shall promptly
         notify the Secured Party of that fact and will execute such instruments
         and take such steps  required  by the  Secured  Party in order that the
         Account and all moneys due to the Secured Party and due notice  thereof
         is given to the appropriate governmental official.

                  (c) After an Event of Default and the repayment in full of the
         Senior Debt and the termination of any agreements relating thereto, the
         Secured  Party  shall have the right  from time to time to arrange  for
         verification  of all Accounts  directly with the account  debtors or by
         other methods  reasonably  satisfactory to the Secured Party.  Any such
         verification  shall be conducted in such a manner as to prevent  (where
         possible) or minimize disruption to Debtor's business.

                  (d) In the event any Accounts are  evidenced by chattel  paper
         or other negotiable instruments, the Debtor shall, after the occurrence
         and during the  continuance  of an Event of Default  and subject to the
         Senior Debt,  deliver the same to the Secured Party (with all requisite
         endorsements,  in favor of the Secured  Party,  which the Secured Party
         may make as  attorney-in-fact  for the Debtor) as soon as possible  and
         prior to such delivery shall hold (subject to the Senior Debt) the same
         in trust for the benefit of the Secured Party.

                  (e)  Except as  otherwise  provided  in this  subsection,  the
         Debtor shall use its  commercially  reasonable best efforts to collect,
         at its own expense,  all amounts due or to become due on the  Accounts.
         After  the  occurrence  and  continuance  of an Event of  Default,  the
         Secured  Party shall have the right at any time,  subject to the Senior
         Debt, upon written notice to the Debtor,  at the expense of the Debtor,
         to take such action to collect the Accounts as the Secured  Party deems
         proper,  including,  without  limitation,  the right to notify  account
         debtors  to remit all  payments  to the  Secured  Party and to  adjust,
         settle and compromise  payment  thereof,  in the same manner and to the
         same extent as the Debtor might have done.  At such time as the Secured
         Party is entitled to exercise and in fact exercises its rights pursuant
         to the  preceding  sentence,  the  Debtor  shall not take any action to
         collect,  adjust,  settle or  compromise  any  Account  except with the
         written  consent of the Secured Party and any  collections  of Accounts
         received or held by the Debtor shall be

                                                         4


<PAGE>


         property of the Secured  Party,  shall be held in trust for the benefit
         of the  Secured  Party  and shall be  delivered  to the  Secured  Party
         immediately  with all  requisite  endorsements  in favor of the Secured
         Party  which the  Secured  Party may make as  attorney-in-fact  for the
         Debtor. The Secured Party does not have any obligation to the Debtor to
         collect or attempt to collect any  Accounts  or to preserve  any rights
         against any party in connection therewith.

                  (f) Debtor shall upon reasonable  request by the Secured Party
         and  immediately  after the  occurrence of an Event of Default give the
         Secured Party notice of all of the Deposit Accounts.

                  6. Inventory.  So long as no Event of Default  exists,  Debtor
may sell the Inventory in the ordinary course of business on customary  business
and  payment  terms,  but no sale in bulk shall be  permitted  without the prior
written consent of the Secured Party.

                  7. Equipment--Possession. Debtor is entitled to the possession
of its Equipment and to use the same in connection with its business, subject to
the rights of the Secured Party hereunder upon the occurrence and continuance of
an Event of Default.

                  8.  Records.  Debtor  will  at all  times  keep  accurate  and
complete  records  of  its  Accounts,  Deposit  Accounts,   Inventory,   General
Intangibles,  Equipment and other items included in the Secured Assets,  and the
Secured Party shall have the right at all reasonable times,  without  disruption
to the  business  of the  Debtor,  to examine  and  inspect the same and to make
copies thereof.

                  9.  Representations,  Warranties  and Covenants of the Debtor.
With  respect to the Secured  Assets,  Debtor  hereby  represents,  warrants and
covenants to the Secured Party as follows:

                  (a) Debtor is, and will be, the sole owner of all Accounts now
         or hereafter  appearing  on the books of Debtor,  and that the same are
         and will be, during the term of this Security Agreement, free and clear
         from any and all assignments,  liens, and security interests except for
         the security  interests of the holders of the Senior Debt and except as
         created hereby.

                  (b) All  Accounts  as shown on the books of Debtor or as shown
         in any certificate,  statement or other report, delivered by the Debtor
         to the Secured Party, shall represent valid and existing obligations of
         the  account  debtors  (except as  consistent  with past  practice  and
         experience of the Debtor)  representing  goods or services delivered or
         performed,  and  invoiced,  and which are not  subject to any  defense,
         counterclaim  or  right  of  setoff  unless  otherwise  stated  on such
         certificate, statement, or other report.

                                                         5


<PAGE>


                  (c) Debtor is and, during the term of this Security Agreement,
         will be the owner of each item of the Secured Assets;  the same will be
         used  solely  in  connection  with the  Debtor's  business;  all of the
         Equipment,  Inventory and General Intangibles are free and clear of all
         liens and encumbrances whatsoever,  except as otherwise provided herein
         and  except for the  security  interests  of the  holders of the Senior
         Debt.

                  (d)  Debtor  will  execute  all   financing   statements   and
         amendments  and  supplements  thereto,  if any,  and will attend to the
         filing of any and all  continuation  statements,  as may be  reasonably
         requested by the Secured Party in order to continue the validity of the
         security interests of the Secured Party hereunder.

                  (e)  Debtor  shall,  from  time to time  as  requested  by the
         Secured Party,  take such action and execute and deliver to the Secured
         Party  all  such  instruments,   supplements,  further  assurances  and
         security or other agreements as may be required or reasonably requested
         by the  Secured  Party in order to perfect  and  continue  the  Secured
         Party's security interest in the Secured Assets hereunder.

                  (f)  Debtor  agrees  to pay,  and to save  the  Secured  Party
         harmless from, any and all liabilities,  costs and expenses (including,
         without  limitation,  reasonable  legal fees and expenses) except those
         caused by willful  misconduct or gross  negligence of the Secured Party
         (i) with respect to, or resulting  from,  any delay in paying,  any and
         all excise,  sales or other taxes which may be payable or determined to
         be payable  with  respect  to any of the  Secured  Assets,  and (ii) in
         connection with any of the  transactions  contemplated by this Security
         Agreement.

                  (g) Debtor will not create,  incur or permit to exist,  and it
         will defend the  Secured  Assets  against,  and it will take such other
         action  as is  necessary  to  remove,  any  lien or  claim on or to the
         Secured  Assets,  other  than the liens  created  hereby  and the liens
         created  pursuant  to the Senior  Debt,  and it will  defend the right,
         title and  interest of the  Secured  Party in and to any of the Secured
         Assets against the claims and demands of all persons whomsoever, except
         for any claims and demands of the Senior Debt.

                  (h) Debtor will not sell, transfer, lease or otherwise dispose
         of any of the Secured  Assets,  except for sales of Inventory by Debtor
         in the ordinary course of its business.

                                                         6


<PAGE>


                  (i) Debtor has the power to execute and deliver this  Security
         Agreement  and to perform its  obligations  hereunder and has taken all
         necessary  action and has received all required  consents  (private and
         governmental)  to authorize such execution,  delivery and  performance,
         and therefore this Security Agreement  constitutes the legal, valid and
         binding  obligation  of the  Debtor,  enforceable  against  it and  the
         Secured Assets in accordance with its terms.  Furthermore,  to the best
         of Debtor's  knowledge,  this Security  Agreement does not and will not
         violate any judicial  decree or order,  or any rules or  regulations of
         any  federal,  state or local  government,  or any  branch,  agency  or
         instrumentality of same.

                  (j) The execution,  performance  and delivery of this Security
         Agreement does not violate or conflict with the terms or provisions of,
         or  the  Debtor's   performance  under,  any  agreement,   document  or
         instrument by which the Debtor is bound.

                  10.  Secured  Party's  Duties.  The  powers  conferred  on the
Secured Party hereunder are solely to protect its interest in the Secured Assets
and shall not impose any duty upon it to exercise any such powers. Secured Party
shall have no obligation to preserve rights against prior parties.

                  11. Default  Remedies.  Except as expressly and  unambiguously
set forth herein,  this Security  Agreement shall be deemed absolute and without
conditions and,  subject to the rights of the Senior Debt, the Secured Party may
enforce  its rights  with  respect to the  Secured  Assets  without  first being
required to attempt  collection of any sums due from the Debtor.  If an Event of
Default shall occur and remain uncured (if it is curable by the express terms of
the Note) for thirty  (30) days after  receipt of notice  thereof by Debtor from
the Secured Party,  the Secured Party shall have the following  rights  (subject
only to Section 10 of the Note and the rights of the  holders of the Senior Debt
generally):

                  (a) to perform any  defaulted  covenant or  agreement  of this
         Security Agreement to such extent as the Secured Party shall reasonably
         determine and advance such moneys as it shall deem reasonably advisable
         for the  aforesaid  purpose and all moneys so advanced,  together  with
         interest  thereon from the date advanced until paid at a rate per annum
         equal to the rate then in effect on the Note,  shall be secured  hereby
         and shall be repaid  promptly  after  notice of the amount due  without
         demand,  provided,  however,  that nothing  herein  contained  shall be
         construed to require the Secured  Party to advance money for any of the
         aforesaid purposes;

                  (b) to notify all account debtors,  to the extent permitted by
         applicable law or regulations,  to pay directly to the Secured Party or
         otherwise as the Secured Party may specify all amounts they owe then or
         thereafter to Debtor;

                                                         7


<PAGE>


                  (c) to take  control  of any and all  proceeds  to  which  the
         Secured Party may be entitled under this Security Agreement,  the Note,
         or under any applicable laws;

                  (d) to take  immediate  possession of the Secured  Assets and,
         with or without taking possession of the Secured Assets, to sell, lease
         or  otherwise  dispose of any or all of the Secured  Assets,  either at
         public or private sale, upon  commercially  reasonable  terms,  and the
         Secured Party may become the purchaser thereof at public sale; provided
         that,  any sale may be adjourned at any time and from time to time to a
         reasonably  specified  time and place by  announcement  at the time and
         place of sale as publication or otherwise of the time and place of such
         adjourned sale;  provided further that, subject to the Senior Debt, the
         proceeds  of any sale shall be  applied  (i) first to the  expenses  of
         taking,  holding and  preparing  for sale or  disposition,  and sale or
         disposition and the like (including  reasonable  attorneys' fees), (ii)
         next to the  principal  and  interest  due under the Note and the other
         amounts  secured under clauses (i) and (ii) of Section 3 hereof,  (iii)
         next to amounts  secured  under clause (iii) of Section 3 hereof,  (iv)
         next to the  holder of any  subordinate  security  interest  therein if
         written notification of demand therefor is received and verified by the
         Debtor before  distribution of the proceeds and (v) lastly, any surplus
         to Debtor and  Debtor  shall  remain  liable  for any  deficiency;  and
         provided further that, any such sale, public or private, may be made on
         credit at the option of the Secured Party;  and provided  finally that,
         the  Secured  Party  shall have the right to  conduct  any such sale on
         Debtor's  premises,  and the  Secured  Party  shall  have such right of
         possession  of said  premises as shall be necessary or  convenient  for
         such purpose but the Secured Party shall make every  reasonable  effort
         to avoid (where possible) or minimize  disruption of Debtor's  business
         activities in so doing;

                  (e) to take immediate  possession of the Secured Assets and to
         use or operate  the  Secured  Assets in order to  preserve  the same or
         their value,  and collect,  receive and use all of the net profits from
         such use or  operation  to pay  indebtedness  secured  by such  Secured
         Assets;

                  (f) to require Debtor, to the extent practicable,  to assemble
         the Secured Assets and make them available to the Secured Party at such
         locations  within the county wherein such Secured Assets are located as
         the Secured Party shall designate;

                  (g) to enter all of the  Debtor's  facilities  to  remove  the
         Secured Assets  therefrom and take possession of the Debtor's books and
         records and computer hardware and software,  and to use all of the same
         in a manner the Secured  Party deems  appropriate  in order to preserve
         and sell or otherwise

                                                         8


<PAGE>


         dispose of the Secured Assets;

                  (h)  to  (without   assuming  any   obligations  or  liability
         thereunder),  at any time and from time to time,  enforce  against  any
         licensee or  sublicensee  all rights and  remedies of the Debtor in, to
         and under any patent  licenses or  trademark  licenses  included in the
         General Intangibles and, in the exercise of commercial  reasonableness,
         take or refrain from taking any action under any such licenses, and the
         Debtor  hereby  releases the Secured  Party free and harmless  from and
         against  any  claims  arising  out of,  any  lawful  action so taken or
         omitted to be taken under applicable law with respect thereto;

                  (i) to proceed to protect  and  enforce  its rights  under the
         Note and this  Security  Agreement  by a suit or suits in  equity or at
         law,  whether for  specific  performance  or  observance  of any terms,
         provisions, covenants or conditions herein or therein contained, in aid
         of the  execution  of any power  herein  or  therein  granted,  for any
         foreclosure  hereunder or  thereunder,  or for the  enforcement  of any
         other proper legal or equitable remedy;

                  (j) to exercise any such additional and/or different rights or
         remedies as are provided for in the Note; and

                  (k) to act as true and lawful  attorney-in-fact of the Debtor,
         with  full  power of  substitution,  with  full  irrevocable  power and
         authority  in the  place and  stead of the  Debtor,  in the name of the
         Debtor,  or in its own name,  for the purpose of carrying out the terms
         of this Security Agreement,  to take any and all appropriate action and
         to  execute  any  and  all  documents  and  instruments  which  may  be
         reasonably  necessary or desirable to  accomplish  the purposes of this
         Security Agreement.

                  The  Secured  Party  shall  have any and all other  rights and
remedies provided by law or equity,  including,  without limitation,  the rights
and remedies of a secured party.  All of the Secured Party's rights and remedies
will  be  cumulative,  and no  waiver  of any  default  will  affect  any  other
subsequent default.  The rights and remedies provided in this Security Agreement
are cumulative,  may be exercised  concurrently or separately,  may be exercised
from time to time and in such  order,  without any  marshalling,  as the Secured
Party shall determine.

                  Subject to the Senior Debt,  nothing herein contained shall be
construed as preventing  the Secured Party from taking all reasonable and lawful
actions to protect  its  interest  in the event  that  liquidation,  insolvency,
bankruptcy,  reorganization or foreclosure  proceedings of any nature whatsoever
affecting the property or assets of Debtor should be instituted.

                  The Secured  Party's  sole duty with  respect to the  custody,
safekeeping

                                                         9


<PAGE>


 and physical preservation of the Secured Assets in its possession,  shall be to
deal with it in the same manner as the Secured Party deals with similar property
for its own  account.  Neither  the  Secured  Party,  nor any of its  respective
directors,  officers, employees or agents shall be liable for failure to demand,
collect or realize  upon all or any part of the Secured  Assets or for any delay
in doing so or shall be under any obligation to sell or otherwise dispose of any
Secured Assets upon the request of the Debtor or otherwise.

                  12. General  Provisions.  (a) This Security  Agreement and the
security  interests of the Secured Party in the Secured  Assets  created  hereby
shall cease and terminate  only upon  repayment in full of the principal and any
accrued interest under and pursuant to the Note or upon cancellation of the Note
by Secured Party.

                  (b) Debtor hereby waives all demands,  notices,  presentments,
         claims,  defenses  and protests of any kind,  except as  expressly  and
         unambiguously  provided  herein and unless not  permitted by applicable
         law, which might in any manner  adversely  affect the rights of Secured
         Party herein.

                  (c) Except where the  application of another law is mandatory,
         this Security  Agreement shall be construed to be a contract made under
         and pursuant to the laws of New York,  and all of the terms,  covenants
         and conditions  contained  herein shall be governed by and construed in
         accordance  with such laws,  without  giving  effect to the conflict of
         laws principles contained in such laws.

                  (d) This Security  Agreement,  all supplements  hereto and all
         amendments  hereof,  shall inure to the benefit of and be binding  upon
         the Debtor,  the Secured  Party,  and their  respective  successors and
         assigns,  but this  Security  Agreement  may not be  assigned by Debtor
         without the written consent of the Secured Party.

                  (e) No waiver of any term,  provision,  covenant or  condition
         contained  in this  Security  Agreement,  or of any  breach of any such
         term,  provision,  covenant or condition,  shall constitute a waiver of
         any subsequent breach or justify or authorize the non-observance on any
         other occasion of such term, provision, covenant or condition contained
         in this Security Agreement.

                  (f)  The  invalidity  or   unenforceability  of  any  term  or
         condition hereof shall not affect the validity or enforceability of any
         other  term or  condition  hereof or of this  Security  Agreement  as a
         whole.

                  (g) In the event of any conflict or inconsistency  between the
         terms of the Note and  those of this  Security  Agreement,  the  former
         shall prevail.

                                                        10


<PAGE>


                  IN WITNESS  WHEREOF,  the parties  have  caused this  Security
Agreement to be executed in St. Louis,  Missouri at the time first above written
by their officers thereunto duly authorized.


                                        MALLINCKRODT INC.
                                        ("SECURED PARTY")


                                        By:________________________________




                                        PALATIN TECHNOLOGIES, INC.
                                        ("DEBTOR")


                                        By:________________________________



                                                        11



                                 State of               Name under which
Name of subsidiary             incorporation        subsidiary does business
- ------------------             -------------        ------------------------

RhoMed Incorporated              New Mexico         RhoMed Incorporated

Interfilm Technologies, Inc.     New York           Interfilm Technologies,
Inc.




                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
report included in this Form 10-KSB/A, into the Company's previously filed
registration statement file nos. 333-57059, 333-56605, 333-33569, 333-72873 and
333-84421.


                                           /s/  Arthur Andersen LLP

Philadelphia, Pa.
  December 23, 1999


<TABLE> <S> <C>


<ARTICLE>                     5

<LEGEND>
This schedule contains summary financial information extracted from the
registrant's audited consolidated financial statements for the fiscal year ended
June 30, 1999 and is qualified  in its  entirety by reference to such  financial
statements.
</LEGEND>

<CURRENCY>                      U.S. Dollars


<S>                             <C>
<PERIOD-TYPE>                   Year
<FISCAL-YEAR-END>                              JUN-30-1999
<PERIOD-START>                                  JUL-1-1998
<PERIOD-END>                                   JUN-30-1999
<EXCHANGE-RATE>                                          1
<CASH>                                           2,333,801
<SECURITIES>                                       533,827
<RECEIVABLES>                                            0
<ALLOWANCES>                                             0
<INVENTORY>                                              0
<CURRENT-ASSETS>                                 2,936,408
<PP&E>                                           2,133,967
<DEPRECIATION>                                           0
<TOTAL-ASSETS>                                   4,723,045
<CURRENT-LIABILITIES>                            2,381,787
<BONDS>                                                  0
                                    0
                                            561
<COMMON>                                            71,376
<OTHER-SE>                                         269,321
<TOTAL-LIABILITY-AND-EQUITY>                     4,723,045
<SALES>                                                  0
<TOTAL-REVENUES>                                   609,977
<CGS>                                                    0
<TOTAL-COSTS>                                   12,676,963
<OTHER-EXPENSES>                                         0
<LOSS-PROVISION>                                         0
<INTEREST-EXPENSE>                                 107,639
<INCOME-PRETAX>                                (12,002,384)
<INCOME-TAX>                                             0
<INCOME-CONTINUING>                            (12,002,384)
<DISCONTINUED>                                           0
<EXTRAORDINARY>                                          0
<CHANGES>                                                0
<NET-INCOME>                                   (12,002,384)
<EPS-BASIC>                                        (2.02)
<EPS-DILUTED>                                        (2.02)



</TABLE>


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