OXIGENE INC
10-K, 1998-04-15
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                                    FORM 10-K

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                  Annual Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934


                   For the fiscal year ended December 31, 1997
                           Commission File No. 0-21990


                                  OXiGENE, INC.
             (Exact name of registrant as specified in its charter)
- --------------------------------------------------------------------------------


           Delaware                                         13-3679168
- ---------------------------------                -------------------------------
(State or other jurisdiction of                  (I.R.S. employer identification
incorporation or organization)                               number)

                  One Copley Place, Suite 602, Boston, MA 02116
                    (Address of principal executive offices)

                                 (617) 536-9500
                     (Telephone number, including area code)


Securities registered pursuant to Section 12(b) of the Act:  None


Securities registered pursuant to Section 12(g) of the Act:


                     Common Stock, par value $.01 per share
                  Warrant to purchase one share of Common Stock
                               Title of Each Class


Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.   Yes X    No __

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ X ]

The   approximate   aggregate   market   value  of  the  voting  stock  held  by
non-affiliates of the registrant as of March 19, 1998 was $160,791,403, based on
the closing price of $17.125 on that date.

As of March 19, 1998, the aggregate number of outstanding shares of Common Stock
of the registrant was 10,195,765 shares.

                       DOCUMENTS INCORPORATED BY REFERENCE

The  registrant's  Proxy  Statement  for the  Annual  Meeting  of  Stockholders,
scheduled to be held on June 5, 1998, is  incorporated  by reference to Part III
(Items 10, 11, 12 and 13) of this Form 10-K.

SAFE HARBOR FOR FORWARDLOOKING STATEMENTS UNDER
THE SECURITIES LITIGATION REFORM ACT OF 1995

     Except for historical  information  contained herein, this Annual Report on
Form 10-K  ("Annual  Report")  contains  forward-looking  statements  within the
meaning  of  the  Private  Securities  Litigation  Reform  Act  of  1995.  These
statements  involve known and unknown risks and uncertainties that may cause the
Company's  actual  results or outcomes  to be  materially  different  from those
anticipated and discussed herein.  Further,  the Company operates in an industry
sector  where  securities  values  may be  volatile  and  may be  influenced  by
regulatory and other factors  beyond the Company's  control.  Important  factors
that the Company  believes may cause such differences are discussed in the "Risk
Factors"  section  of  this  Annual  Report  and  in the  cautionary  statements
accompanying the forward-looking  statements in this Annual Report. In assessing
forward-looking statements contained herein, readers are urged to read carefully
all Risk Factors and cautionary statements contained in this Annual Report.


                                     PART I

1.  BUSINESS.

Introduction

     OXiGENE, Inc. ("OXiGENE" or the "Company") is engaged primarily in research
into and  development of products  designed to enhance the clinical  efficacy of
radiation  and   chemotherapy,   the  most  common  and  traditional   forms  of
non-surgical cancer treatment. The Company's proprietary technology involves the
inhibition,  measurement  and  stimulation  of the cellular DNA repair  process.
Since 1997,  the  Company,  through  collaborative  arrangements,  has also been
engaged  in the  development  of two  new  classes  of  compounds  that  will be
clinically tested as a direct treatment of cancer.

     OXiGENE's  principal  products,  Neu-Sensamide(TM)  and  Oxi-104  (proposed
generic  name  declopramide),  are  sensitizers,  drugs  that make a tumor  more
susceptible to damage by radiation or  chemotherapy.  Both products are based on
the Company's  proprietary  knowledge of the processes by which certain  enzymes
repair damaged DNA sites, a function essential to a cell's survival.  The cell's
enzymes that normally  repair DNA damage to the tumor cell counter the cytotoxic
(cell-killing)  effects of radiation  and  chemotherapy  by repairing  the tumor
cell's DNA that has been damaged by either of those therapies. When administered
in accordance with its prescribed regimen, the Company believes, on the basis of
its clinical studies, that  Neu-Sensamide(TM)  should make cancerous tumor cells
more  sensitive to radiation by  inhibiting  DNA repair  activity,  consequently
increasing tumor damage from radiation therapy in those cells. Accordingly,  the
Company  expects that patient  response to radiation  therapy should be improved
and may result in increased  tumor  shrinkage,  reduced side  effects,  or both.
Based on the  results of  preclinical  animal  studies,  OXiGENE  believes  that
Oxi-104 alone may induce tumor growth-inhibiting and tumor-killing effects.

     Neu-Sensamide(TM)  is  a  proprietary  reformulation  of  Sensamide,(TM)  a
prototype drug in which  metoclopramide is the active  ingredient.  In September
1997,  the Company  announced  the first  preliminary  results of its  European,
randomized,   controlled   Phase  II/III  clinical  trial  of  Sensamide(TM)  in
combination  with radiation  therapy in 218 patients with  inoperable  non-small
cell lung cancer  ("NSCLC"),  which indicated an increased  median survival time
for those patients who received a full dosage of  Sensamide(TM)  plus radiation.
In March 1998, the Company  supplemented  those  preliminary  results with tumor
response  data.  The  additional  study data  indicate  that more  patients with
squamous  cell  carcinoma  (the most common form of lung cancer) and a Karnofsky
score (a  benchmark  for  assessing  the  degree of illness  in  terminally  ill
patients)  of  90  or  higher,  when  receiving  Sensamide(TM)  plus  radiation,
experienced  tumor  response.  Forty-seven  (47%) of those patients  experienced
complete  or partial  (complete  is 100% and  partial is 50% or  greater)  tumor
response,   compared  to  30%  for  patients  who  received  radiation  only.  A
significant  number of patients  did not complete  the  Sensamide(TM)  treatment
because of either the Central Nervous System (CNS) side effects  associated with
metoclopramide  (approximately  25%) or the progressive  deterioration  of their
health   (approximately  20%).  These  CNS  side  effects  (sedation,   anxiety,
restlessness and depression), however, are reversible, have been well documented
in the clinical  literature  for more than 30 years,  and were not unexpected by
the Company.  The Company believes those results constitute  sufficient proof of
the theory underlying its principal scientific concept to provide a basis for it
to continue  advanced  clinical  studies  with  respect to its later  generation
drugs,  which,  the Company  believes,  have  reduced  side  effects  from those
experienced with Sensamide(TM) (as described above).

     In the fourth quarter of 1996, OXiGENE commenced an additional  randomized,
controlled   Phase  III  clinical   trial  in  226  patients  with  NSCLC  using
Neu-Sensamide(TM),  the Company's  second-generation  sensitizer  drug. Based on
preliminary  preclinical  studies  and a Phase I  clinical  trial,  the  Company
believes  that  Neu-Sensamide(TM)  will show a reduced CNS side  effect  profile
compared to  Sensamide,(TM)  resulting  in an increase of the number of patients
completing   treatment.   The  Company   intends  to  use  the  results  of  the
Sensamide(TM)   study  to   support   a  New  Drug   Application   ("NDA")   for
Neu-Sensamide(TM)  as a radiation  sensitizer for the treatment of patients with
NSCLC.

     In the fourth quarter of 1997, a 15-patient,  open-label,  Phase I study of
Neu-Sensamide(TM)  in patients with  glioblastoma,  a highly  malignant  form of
brain  cancer,   commenced  in  the  United  States.  The  European  Phase  I/II
counterpart of this study was initiated in Sweden in the second quarter of 1996.

     After the filing of an  Investigational  New Drug ("IND")  application with
the U.S.  Food and Drug  Administration  ("FDA")  in  March  1997,  the  Company
commenced Phase I/II clinical tests of Oxi-104,  the Company's third  generation
sensitizer, in combination with 5-FU and Cisplatin  (chemotherapeutic agents) in
patients  with advanced  stages of cancer.  This study is the first in which the
Company utilizes its compounds in combination with  chemotherapeutic  agents, as
distinguished from radiation.  Oxi-104 is an N-substituted benzamide but, unlike
Sensamide(TM) and Neu-Sensamide,(TM) it is not based on metoclopramide (which is
a  different  compound  in the  chemical  family of  N-substituted  benzamides).
Oxi-104 has been designed with a molecular structure that, the Company believes,
may reduce  adverse side effects in patents while  maintaining  the  sensitizing
properties of other N-substituted benzamides.

     The first of the Company's products being developed,  under a collaborative
arrangement,  as a direct treatment of cancer is Cordycepin.  A Phase I clinical
study of Cordycepin in combination  with Pentostatin in patients with refractory
TdT-positive  acute lymphoid  leukemia  started in the first quarter of 1997, in
collaboration  with Boston  Medical Center  Corporation,  an affiliate of Boston
University  Medical  Center  ("BMC"),  and the National  Cancer  Institute.  The
collaboration  with BMC was expanded  with the  appointment  of Dr. Ronald Pero,
OXiGENE's  Chief  Scientific  Officer,  as  a  professor  and  member  of  BMC's
scientific staff and the creation of an OXiGENE-sponsored research facility that
will conduct  research  into,  among other  things,  the  potential  therapeutic
synergies between N-substituted benzamides and Cordycepin and related compounds.
OXiGENE  has an option to  acquire  an  exclusive,  world-wide,  royalty-bearing
license  with  respect  to  any  invention  or  product,  including  Cordycepin,
conceived in the course of work performed under the BMC agreement.

     In  May  1997,  OXiGENE  entered  into  an  agreement  with  Arizona  State
University  ("ASU")  to  develop  and  test  certain  Combretastatin  compounds,
including    Combretastatin    (hereinafter    generally    referred    to    as
"Combretastatin").  Combretastatins are naturally-occurring substances that were
identified and isolated by Dr. George R. Pettit, Regents Professor of Chemistry,
and  his   colleagues  at  ASU,  from  the  South   African   bushwillow   tree.
Combretastatin  is  believed to block the growth of new blood  vessels  into the
tumor and to destroy recently-formed blood vessels within the tumor. OXiGENE has
an option to acquire from ASU an exclusive, world-wide,  royalty-bearing license
with respect to the commercial rights to Combretastatin.

     The Company has also  developed  proprietary  assays  (tests)  that measure
levels of the DNA repair  enzyme PARP (Poly (ADP Ribose)  Polymerase)  in blood,
thereby  suggesting DNA repair activity that the Company believes  correlates to
immune  function and status,  and has identified a mixture of compounds,  called
Nicoplex,  that it believes may be capable of stimulating  DNA repair.  Based on
preclinical  studies to date, OXiGENE has commenced the clinical  development of
these product types.

     There can be no assurance that the Company's  existing and planned  product
development  efforts and clinical trials for  Sensamide,(TM)  Neu-Sensamide(TM),
OXI-104  or  any  other  compound,   will  be  successful  or  completed  within
anticipated time frames,  or at all; that regulatory  approvals will be obtained
or will be as broad as those sought by the  Company;  or that any  products,  if
introduced,  will  achieve  market  acceptance.  In  addition,  there  can be no
assurance that the Company's  technology will prove effective,  that the Company
will be able to enter into  strategic  alliances  or joint  ventures or that the
terms  thereof will be  favorable  to the  Company,  or that the Company will be
profitable. See "Risk Factors."

     The Company was  incorporated  in New York in 1988,  and  subsequently  was
re-incorporated  in  Delaware  in  1992.  The  Company   established  a  Swedish
subsidiary,  OXiGENE  Europe  AB, in  December  1994.  The  Company's  principal
executive  office is located at One Copley Place,  Suite 602,  Boston,  MA 02116
(phone   no.:   617-536-9500;   fax  no.:   617-536-4700,   and  in   Sweden  at
Blasieholmsgatan  2C, S-111 48 Stockholm,  Sweden (phone no.: 011 46 8 678 8720;
fax no.:  011 46 8 678  8605)  and at  Scheelevagen  17,  S-223 70 Lund,  Sweden
(telephone  no.: 011 46 46 16 8860; fax no.: 011 46 46 16 8866).  Any references
in this Annual Report to "OXiGENE" or the "Company" shall mean OXiGENE, Inc. and
its wholly-owned Swedish subsidiary OXiGENE Europe AB.


Product Development and Marketing Strategy

     OXiGENE's  primary goal to date has been to develop  products  that enhance
the  efficacy of  existing  forms of cancer  treatment,  such as  radiation  and
chemotherapy,  and improve a patient's quality of life, by reducing side effects
and inhibiting  the DNA repair  function of, and increasing DNA damage in, tumor
cells that have been  subjected  to  treatment.  In 1997,  the Company  began to
expand its focus to include the development  and clinical  testing of Cordycepin
and Combretastatin,  two classes of compounds that aim to treat cancer directly.
The Company  believes  these  compounds  complement its  traditional  sensitizer
program, and offer an opportunity to broaden the Company's product pipeline.

     The Company  currently  intends to continue and expand its ongoing clinical
trial  program in Europe and  further  develop  and  broaden  its  research  and
clinical  trial  activities  in the United  States.  The Company does not own or
lease  any  laboratories  or  other  research  and  development  facilities.  In
connection with the BMC agreement, the Company has set up an office in Boston to
monitor its clinical trials and research activities in the United States.

     The Company's policy has been to establish relationships with universities,
research  organizations  and other  institutions  in the field of oncology.  The
Company intends further to broaden these  relationships,  rather than expand its
in-house research, development and clinical staff. Although the Company plans to
market its  products,  if and when approved for  marketing,  directly in certain
European  countries,  it  has  had  preliminary  discussions  with  unaffiliated
pharmaceutical companies regarding the formation of possible strategic alliances
or joint  ventures for the  manufacturing  and  marketing of its products in the
United States, the Far East and elsewhere.  To date, the Company has not entered
into any such alliances or ventures.  While OXiGENE is likely to explore license
and development  opportunities for its technologies with other companies,  there
can be no assurance  that the Company will be  successful  in  establishing  and
maintaining  collaborative  agreements  or  licensing  arrangements;   that  any
collaborative   partner  will  not  be  pursuing  alternative   technologies  or
developing  alternative  compounds  either on its own or in  collaboration  with
others,  directed at the same  diseases as those  involved in its  collaborative
arrangements with the Company; that any such collaborative  partners will devote
resources to the Company's technologies or compounds on a basis favorable to the
Company;  that any such arrangements  will be on terms favorable to OXiGENE;  or
that,   if   established,   such  future   licensees   will  be   successful  in
commercializing  products.  If  the  Company's  collaboration  arrangements  are
terminated   prior  to  their  expiration  or  if  the  other  parties  to  such
arrangements  fail  to  adequately  perform,  there  can  be no  assurance  that
submission of product  candidates for  regulatory  approval will not be delayed.
See "--Research and Development and Collaborative Arrangements."

     OXiGENE has  selected  Caneire  Teoranta  (trading  as  Bioniche  Teoranta,
"Bioniche"),   a  Canadian   pharmaceutical   company   with  FDA  current  Good
Manufacturing  Practice ("cGMP") standard  facilities,  for the commercial batch
manufacturing  of  Neu-Sensamide(TM).  The  Bioniche  agreement  will enable the
Company  to  assemble   and  evaluate   shelf-life   and   stability   data  for
Neu-Sensamide(TM)  produced by Bioniche in connection with the Company's ongoing
Neu-Sensamide(TM)  clinical trials in patients with inoperable NSCLC. Production
of quantities sufficient to conduct the Company's current and projected clinical
trials commenced at Bioniche's facilities in Ireland in January 1997.

     Currently,  the Company  has  collaborative  arrangements  with a number of
academic and other research  institutions and organizations in the United States
and Europe,  including:  the University of Lund in Lund, Sweden;  Boston Medical
Center in Boston,  Massachusetts;  the  Swedish  Cancer  Society  in  Stockholm,
Sweden; the University of Kentucky Research  Foundation in Lexington,  Kentucky;
Aarhus  University in Aarhus,  Denmark;  Gray  Laboratory  in Middlesex,  United
Kingdom; Angiogene Ltd. in Oxfordshire, United Kingdom; Georgetown University in
Washington, D.C.; University of Florida in Gainesville,  Florida; The University
of Texas M.D.  Anderson Cancer Center in Houston,  Texas;  Baylor  University in
Waco, Texas; and Arizona State University in Tempe, Arizona. See "--Research and
Development and Collaborative Arrangements."

     In  particular,  the  Company  believes  that its  collaborations  with the
University  of Lund enable it to conduct  clinical  trials of its products in an
environment  offering a more homogenous patient population at less cost and more
rapidly than the Company could achieve in the United  States.  The University of
Lund has  historically  provided,  and  continues  to provide,  the Company with
access  to  clinical  trial  facilities,   patients  and  research   facilities.
Additionally,  the Company  benefits  indirectly  from certain  research  grants
received by the University of Lund.


Technology Overview

     OXiGENE's  proprietary  technology is based on the relationship between DNA
repair and DNA damage as affected  by both the  operation  of Poly (ADP  Ribose)
Polymerase  ("PARP") (a DNA repair enzyme also known and formerly referred to as
Adenosine Diphosphate Ribosyl Transferase or ADPRT) and cell replication. Normal
cells in the human  body are  constantly  subjected  to  external  assault  from
harmful environmental agents such as the sun's ultraviolet rays, toxic chemicals
in the diet and  carcinogens  such as smoke that are absorbed  into the body, as
well as from internal  assault from  metabolic  byproducts  produced  within the
cell.  These assaults cause damage,  or genetic  lesions,  to the DNA molecules,
which  contain the genetic  blueprint  (instructions)  for the cell.  The cell's
structural  integrity is dependent  on its ability to read and  translate  those
blueprints.  Repairing DNA damage is, therefore, essential to a cell's survival.
Consequently,  the body  attempts to counter this constant  assault  through its
genetic mechanisms that monitor genetic lesions to a cell's DNA molecules and to
repair them enzymatically.

     Repair enzymes move constantly  along the DNA molecule  seeking out genetic
lesions  and  attempting  to repair  them  through a  process  called  "excision
repair." One of these enzymes is PARP. It identifies a genetic lesion,  attaches
to the damaged site and engages other enzymes to help in the repair process. The
injured  portion of the DNA molecule is then removed by enzymatic  digestion and
additional  enzymes repair the damage to that part of the molecule.  As DNA is a
double helix composed of diametrically  opposed strands,  the repair enzymes can
use the unaffected  strand of  nucleotides  (the class of nucleic acid compounds
from which genes are  constructed)  as a template  for  determining  the correct
nucleotides  to serve  as  replacement  for the  injured  portion  that has been
removed.  The process is  completed  by the repair  enzymes,  which  produce the
"complementary twin" and implant it in the previously removed damaged section.

     The excision  repair process is selective in that it concentrates on active
regions of the DNA helix,  i.e.,  those containing the genes that are most vital
to the cell.  Thus,  when the rate of  damage to a cell is more than the  repair
system can handle,  generally the repair  mechanism  first repairs  lesions in a
cell that occur in frequently read genes, which are the genes that are important
to a cell's  day-to-day  survival.  Damage  occurring in inactive or  structural
portions of the DNA that are not  immediately  important to a cell's survival is
repaired only as time permits, if at all. Therefore, OXiGENE believes that cells
become  malignant  or age by the  accumulation  of genetic  lesions that the DNA
repair system has failed to correct properly or in a timely manner.


             [BIOCHEMICAL PROCESS OF EXCISION REPAIR OF DAMAGED DNA]

     Throughout life, cells replicate by division.  Cell division  (replication)
occurs very quickly and defects are  unavoidable.  Genetic defects  constitute a
serious threat to a cell's survival.  A persistent  genetic defect, or mutation,
increases the risk of disease and death.  Cancer is a disease in which a mutated
tumor cell divides  uninterruptedly and in an uncontrolled manner.  Normal cells
in the  presence  of tumor  cells die  because  the tumor  cells  exhaust  their
nourishment,  inhibiting  a normal  cell's  ability  to survive  and  eventually
leading to organic malfunctions and possibly death.


              [DRAWING OF THE DNA REPAIR PROCESS IN THE HUMAN BODY]

     Traditionally,  cancer treatment has been based on the theory that stopping
uncontrolled  cell  division may halt or slow tumor growth.  Both  radiation and
chemotherapy  increase DNA damage in tumorous cells,  causing  toxicity and cell
death.  Tumorous  cells are known to die by either of two  mechanisms,  necrosis
(death with cell replication) and apoptosis (death without cell replication), or
both. Based on recent scientific evidence, the Company believes that lower doses
of  radiation or  chemotherapy  cause tumor cell death  primarily by  apoptosis,
whereas  at higher  doses  necrotic  death is  proportionately  more  prevalent.
OXiGENE's main product line of DNA repair  inhibitors are based on N-substituted
benzamides,  which,  the Company  believes,  cause tumor  toxicity  primarily by
apoptosis.  Presented  in  biological  terms,  apoptosis  can  be  viewed  as an
enzymatic  inhibition of the DNA repair enzyme PARP, leading to the induction of
massive DNA damage,  blocking of cell  replication  and  eventually  cell death.
Necrosis on the other hand is influenced by non-enzymatic  DNA repair inhibition
such as would be the case if oxidative  damage  interacts  directly with certain
chemical  groups in the PARP  enzyme to inhibit its  function  of  removing  DNA
lesions introduced by radiation or chemotherapy.

     Apoptosis  is initiated  by cells as an  alternative  pathway to block cell
replication  and induce  death.  Necrosis on the other hand causes  cells to die
during  replication  (mitotic  cell death) or permits  cells to survive but with
mutation,  potentially  causing  tumor  disease.  The  advantage to a patient of
apoptotic  death of tumorous  cells,  in contrast to necrotic  death, is that it
allows  normal  living cells to absorb the various  components  that make up the
apoptotic,  dying cells  without  further  enzymatic  digestion  of the cellular
components  as occurs with necrotic cell death.  Accordingly,  apoptosis  causes
cell death  without the many toxic side  effects  associated  with  necrosis and
enzymatic  digestion.  This is an important basis for OXiGENE's product research
and development,  particularly its second and third generation  products,  since
its goal is to create drugs to counteract cancer that are also less hazardous to
the individual than those used today.

     The Company's drugs are based on  metoclopramide,  a compound in the family
of N-substituted benzamides.  N-substituted benzamides, together with the family
of  nicotimamide  compounds,  have been  developed into drugs for many different
medical  indications,  some of which have been used for more than 30 years.  The
Company's  recent  research  has  focused  on the  mechanism  of action of these
compounds  and  their  possible   regulation  of  PARP  activity  and,  thereby,
regulation of the processes of DNA repair and apoptosis  (programmed  cell death
or cell death without cell  replication).  Based on its  preclinical  studies to
date,  OXiGENE  believes that DNA damage,  such as that induced by radiation and
chemotherapy,  activates  the nuclear  transcription  factor  kappa B ("NF-kB"),
which in turn may modulate PARP  activity and activate  several other genes that
protect cells against  apoptosis-induced  cytotoxicity  and induce  inflammatory
cytokine product.  Therefore,  the Company believes that a drug that can inhibit
NF-kB may be able to induce tumor killing by apoptosis and inhibit  inflammatory
responses,  which would sensitize  DNA-damaging radio- and chemotherapies and at
the same time  inhibit  inflammation,  a  contributing  factor to unwanted  side
effects.


         [SCHEMATIC OVERVIEW OF MODE OF ACTION OF DNA REPAIR INHIBITION]

     OXiGENE's  products  are in an  early  stage  of  development.  In order to
achieve  profitable  operations on a continuing basis, the Company,  alone or in
collaboration with others, must successfully develop, manufacture, introduce and
market its products.  The time frame necessary to achieve market success for any
individual  product  is long  and  uncertain.  See  "--Product  Development  and
Regulatory  Processes." The products  currently under development by the Company
will require  significant  additional  research and  development  and  extensive
preclinical and clinical  testing prior to application for commercial use. There
can be no assurance that the Company's research or product  development  efforts
or those of its collaborative partners will be successfully completed,  that any
compounds  currently  under  development  by the  Company  will be  successfully
developed into drugs, or that any products will receive regulatory approval on a
timely basis, if at all.

     DNA Repair Inhibition.  Cancer therapy typically involves either or both of
surgery,  to  remove  the  primary  tumor,  and  the  application  of  cytotoxic
(cell-killing) agents, such as radiation or chemotherapy, to destroy primary and
secondary  tumors  that are too small,  diverse or broadly  spread to be removed
surgically   (called   metastases).   Nearly   all   available   radiation   and
chemotherapies  work by  increasing  DNA damage to tumor  cells,  thus  blocking
replication of those cells and inhibiting their growth by necrosis or apoptosis,
or both, and  eventually  leading to their death.  As tumorous  cells  replicate
substantially  more frequently  than normal cells,  the body's normal DNA repair
mechanism  tends  to  counteract  the  effects  of  radiation  and  chemotherapy
treatment by promoting the  replication,  or "regrowth," of the very tumors that
have been  treated.  The Company  believes that this process may be prevented by
inhibiting the body's normal repair  mechanism.  Further,  the Company  believes
that certain chemical  compounds are capable of serving as "sensitizers,"  which
supplement the radiation or chemotherapy phase of cancer treatment by inhibiting
DNA repair of the tumor cell and increasing DNA damage,  thereby  increasing the
efficiency of the cytotoxic agents.  Drugs that exhibit  sensitizing  properties
permit an  oncologist  to elect either to achieve  greater  results with a given
dose of  radiation  therapy  or  chemotherapy,  or to  reduce  the  level of the
cytotoxic  agent  needed  to  achieve  the  same  result.  Frequently,  however,
oncologists must cut short therapy because side effects  associated with certain
sensitizing  agents become intolerable before effective tumor killing can occur.
The Company believes that its principal,  second and third  generation  products
are  sensitizers  that should be capable of  inhibiting  DNA repair of the tumor
cell and  increasing DNA damage  without  intolerable  side effects when used in
conjunction with traditional cancer treatments.  See "--OXiGENE's Clinical Trial
Program."

     DNA Repair  Measurement  and  Stimulation.  The PARP enzyme is an important
enzyme in the DNA repair  process  because it  recognizes  DNA damage and alters
certain proteins in the damaged site,  enabling the other repair enzymes to gain
access to that site and to complete the excision repair process.  Therefore, the
Company  believes that if an  individual's  level of PARP is high, DNA repair is
being facilitated and DNA damage is being removed,  and if an individual's level
of PARP is low, DNA repair is being  inhibited  and DNA damage will  accumulate.
Consequently, by measuring individual levels of PARP, the Company believes it is
possible  to  determine  how well  the DNA  repair  process  is  functioning  in
preventing accumulated DNA damage. OXiGENE believes that knowledge of DNA repair
activity   may  be  useful  for   monitoring   or  screening   individuals   for
susceptibility to cancer, immune deficiencies,  chemotherapeutic drug resistance
and the success or failure of chemopreventive treatment.

     OXiGENE  believes that knowledge of the body's  metabolic  function and its
related  process  known  as  "oxidative  stress,"  in  which a small  number  of
metabolic "mistakes" occur and cause the formation of certain intermediates that
damage DNA, and  knowledge  of the body's  inflammatory  response  that causes a
decline in DNA repair,  may lead to the  development of drugs that may stimulate
DNA repair.  Drugs of that type, the Company  believes,  could reduce a person's
susceptibility to cancer and certain diseases  associated with the aging process
by increasing net DNA repair capacity.

     Although the Company has conducted  extensive  preclinical  cell and animal
research  into,  and is currently  in the early  stages of clinical  testing of,
assays and drugs in some of the areas of DNA repair  measurement  and DNA repair
stimulation,  there can be no  assurance  that any  assays or drugs  related  to
either of these areas can or will be developed by the Company.  See "--OXiGENE's
Clinical Trial Program."


OXiGENE's Clinical Trial Program

     DNA Repair Inhibiting Products. OXiGENE has discovered certain compounds in
the family of  N-substituted  benzamides  that it believes  should be capable of
inhibiting  PARP-modulated DNA repair and selectively reacting with radiation to
cause additional DNA damage preferentially in the treated area. OXiGENE believes
that this  selectivity  is due to tumor cells  exhibiting  increased  DNA repair
activity as compared  to normal  cells,  rendering  them more  sensitive  to DNA
repair inhibition and death by apoptosis.  The Company believes, on the basis of
its research activities to date, that its principal product,  Neu-Sensamide(TM),
should  act as a  selective,  targeted  sensitizer  of tumor  tissue  that  will
sensitize  radiation  preferentially  inside the treated area without  producing
significant toxic side effects outside the treated area.

     The  current  emphasis  of  the  Company's  clinical  trial  program  is on
evaluating the safety and efficacy of  Neu-Sensamide(TM)  as a sensitizing agent
in combination with radiation  therapy,  with the goal of obtaining approval for
Neu-Sensamide(TM) as a radiation sensitizer. The Company does not intend to seek
marketing  approval  of  Sensamide,(TM)  the  prototype  of   Neu-Sensamide,(TM)
although a European,  randomized,  controlled  Phase  II/III  clinical  trial of
Sensamide(TM)  in 218 patients  with  inoperable  NSCLC has been  completed.  In
September  1997,  the first  preliminary  results of this study were  announced,
which  indicated  an  increased  median  survival  time for those  patients  who
received a full dosage of  Sensamide(TM)  plus  radiation.  In March  1998,  the
Company  supplemented  those  preliminary  results with tumor response data. The
additional  study data indicate that more patients with squamous cell  carcinoma
(the most common form of lung  cancer) and a Karnofsky  score (a  benchmark  for
assessing  the degree of illness in  terminally  ill  patients) of 90 or higher,
when  receiving  Sensamide(TM)  plus  radiation,   experienced  tumor  response.
Forty-seven  percent  (47%) of those  patients  experienced  complete or partial
(complete is 100% and partial is 50% or greater) tumor response, compared to 30%
for patients who received  radiation only. A significant  number of patients did
not complete the  Sensamide(TM)  treatment because of either the Central Nervous
System (CNS) side effects associated with metoclopramide  (approximately 25%) or
the progressive  deterioration  of their health  (approximately  20%). These CNS
side effects  (sedation,  anxiety,  restlessness and depression),  however,  are
reversible,  have been well documented in the clinical  literature for more than
30 years,  and were not  unexpected by the Company.  The Company  believes those
results  constitute  sufficient  proof of the theory  underlying  its  principal
scientific  concept  to  provide a basis for it to  continue  advanced  clinical
studies with respect to its later generation drugs, which, the Company believes,
have reduced side effects from those that are experienced with Sensamide(TM) (as
described above).

     In the  fourth  quarter  of  1997,  the  Company  commenced  an  additional
randomized,  controlled  Phase III clinical  trial of  Neu-Sensamide(TM)  in 226
patients with NSCLC. The Company intends to use the results of the Sensamide(TM)
study to support an NDA for  Neu-Sensamide(TM) as a radiation sensitizer for the
treatment of patients with NSCLC.

     In the  fourth  quarter  of  1996,  the  Company  commenced  a  15-patient,
open-label Phase I study of Neu-Sensamide(TM)  in patients with glioblastoma,  a
highly  malignant form of brain cancer.  The European Phase I/II  counterpart of
this study was initiated in Sweden in the second quarter of 1996.

     OXiGENE has  collaborated  with ILEX  Oncology,  Inc., a contract  research
organization  based in San  Antonio,  Texas  ("ILEX"),  on the  development  and
pre-clinical  testing  of  Oxi-104.  Oxi-104,  the  Company's  third  generation
sensitizer,  is  an  N-substituted  benzamide  and,  therefore,  is  covered  by
OXiGENE's  use  patent  for all  N-substituted  benzamides  as  sensitizers  for
chemotherapy  and radiation.  The Company believes that Oxi-104 alone may induce
tumor  growth-inhibiting and tumor-killing effects.  Oxi-104 is an N-substituted
benzamide but, unlike  Sensamide(TM)  or  Neu-Sensamide,(TM)  it is not based on
metoclopramide.  Oxi-104 has been designed with a molecular  structure that, the
Company  believes,  may reduce side effects while  maintaining  the  sensitizing
properties of other  N-substituted  benzamides.  The Company  intends to develop
Oxi-104 as a  chemosensitizer.  For the  Company's  two  radiation  sensitizers,
Sensamide(TM) and Neu-Sensamide(TM), currently the limiting doses are determined
by their central nervous system (CNS) side effects.  By comparison,  Oxi-104 has
not yet been shown to cause any CNS side  effects in animal  studies.  After the
filing of an IND with the FDA in March  1997,  the  Company  commenced a Phase I
clinical trial of Oxi-104.

     Cordycepin/Pentostatin.  In  December  1996,  the  Company  entered  into a
clinical trial and sponsored research agreement with BMC, an affiliate of Boston
University  Medical  Center,  pursuant  to  which  BMC is  conducting  a Phase I
clinical  study  of   3'-deoxyadenosine   (cordycepin)  and   2'-deoxycoformycin
(pentostatin) in patients with refractory  TdT-positive acute lymphoid leukemia.
The Phase I study commenced in the first quarter of 1997 in  collaboration  with
Boston University and the National Cancer Institute. The collaboration under the
BMC Agreement  was expanded in August 1997,  with the  appointment  of Dr. Pero,
OXiGENE's Chief Scientific Officer, as Research Professor of Medicine at BMC and
the set-up of an OXiGENE-sponsored laboratory facility at BMC. The BMC agreement
contemplates  a  collaborative  program  that  focuses on research  aimed at the
continued  development  of,  and  potential  synergies  between,   N-substituted
benzamides, cordycepin and related compounds, and the conduct of clinical trials
in connection  therewith.  The BMC agreement grants OXiGENE an option to acquire
an exclusive, world-wide, royalty-bearing license with respect to the commercial
rights to any inventions  made in the course of work  conducted  pursuant to the
BMC agreement, including to cordycepin.

     Combretastatin.  In May 1997,  OXiGENE and Arizona State University entered
into an  agreement  to  develop  and test  Combretastatin.  Combretastatins  are
naturally-occurring  substances, that were identified and isolated by Dr. George
R. Pettit,  Regents Professor of Chemistry,  and his colleagues at ASU, from the
South African bushwillow tree. Combretastatin is believed to block the growth of
new blood  vessels into the tumor and to destroy  recently-formed  blood vessels
within the tumor.  Vasculature is critical to both the survival of a solid tumor
mass and its continued  growth and,  therefore,  represent a key target in novel
cancer  treatment.  OXiGENE has an option to acquire an  exclusive,  world-wide,
royalty-bearing license with respect to the commercial rights to Combretastatin.
Early in the third quarter of 1998, the Company  anticipates the commencement of
clinical trials of  Combretastatin  in the United Kingdom,  and the filing of an
IND in the United States.

     OXiGENE's  products  are in an  early  stage  of  development.  In order to
achieve  profitable  operations on a continuing basis, the Company,  alone or in
collaboration with others, must successfully develop, manufacture, introduce and
market its products.  The time frame necessary to achieve market success for any
individual  product  is long  and  uncertain.  See  "--Product  Development  and
Regulatory  Processes." The products  currently under development by the Company
will require  significant  additional  research and  development  and  extensive
preclinical  and clinical  testing prior to application  for  commercial  use. A
number of companies in the  biotechnology  and  pharmaceutical  industries  have
suffered  significant  setbacks in clinical trials, even after showing promising
results  in earlier  studies  or  trials.  Although  the  Company  has  obtained
favorable results to date in preclinical  studies and clinical trials of certain
of its  products,  such  results  may not be  indicative  of  results  that will
ultimately be obtained in or throughout such clinical  trials,  and there can be
no assurance that clinical testing will show any of the Company's products to be
safe or  efficacious.  Additionally,  there can be no assurance that the Company
will not encounter  problems in its clinical  trials that will cause the Company
to delay,  suspend or  terminate  those  clinical  trials.  There can also be no
assurance that the Company's research or product development efforts or those of
its collaborative  partners will be successfully  completed,  that any compounds
currently under  development by the Company will be successfully  developed into
drugs, or that any products will receive regulatory  approval on a timely basis,
if at all. If any such  problems  occur,  the Company  could be  materially  and
adversely affected.

     A summary of the clinical trials related to the Company's products that are
currently under development is set forth in the table on the following page.


DNA Repair Measuring Products
- -----------------------------

     PARP Assay Products.  The Company believes that its knowledge of DNA repair
activity may be applied to monitor or screen  individuals for  susceptibility to
cancer, immune deficiencies and chemotherapeutic  drug resistance.  Studies have
shown that DNA repair capacity may vary from one individual to another.  OXiGENE
has quantified  individual levels of PARP as a DNA repair estimate.  Pursuant to
an agreement,  dated October 7, 1991,  with  Preventive  Medicine  Institute,  a
not-for-profit  corporation  affiliated with the Strang Cancer Prevention Center
in New York, New York, the Company holds an exclusive  worldwide license,  which
expires  in 2011,  to  certain  patents  and  related  know-how  covering a PARP
diagnostic  test that  measures  PARP levels in white blood  cells.  The Company
believes  that a simple  and  inexpensive  serum-based  test may give a reliable
surrogate  indication of the level of PARP in white blood cells. OXiGENE filed a
U.S. patent application in October 1994, with respect to such a test.

     The  New  York  University  Medical  Center,  Department  of  Environmental
Medicine and the Center of Aids Research have conducted an  investigation  using
OXiGENE's assay for measuring PARP levels (i.e., a serum  thiol-based  surrogate
test) on 133 patients who were intravenous narcotic drug users and were infected
with the HIV virus that causes AIDS. The Company believes that this repair assay
may assess DNA repair  activity  by  measuring  total serum  thiol  levels.  The
Company believes that preliminary  results of this  investigation  indicate that
this  assay may be  effective  in  monitoring  the  progression  of  HIV-related
diseases. The Company believes that measuring a person's immune function through
DNA  repair  activity  may  be  a  better  indication  of  HIV-related   disease
progression and, consequently,  survival than more commonly used indicators such
as CD4  cell  counts.  The  Company  intends  to  pursue  the  development  of a
more-cost-effective,    easy-to-administer    version    of   the    assay   for
commercialization.
<PAGE>
Summary of OXiGENE's Clinical Trial Program

<TABLE>
<CAPTION>

 Study Code          Drug/Indication           Phase and Design        Total Patients      Treatment Assignment

- -------------------- ------------------------- -------------------- ------------------ ----------------------------
<S>                  <C>                       <C>                          <C>            <C>                 
Lu-01                Sensamide(TM)in           I/II;                         23            All patients on
                     NSCLC                     uncontrolled,                               Sensamide(TM)(i.v.) with
                                               open-label                                  radiation


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-01               Sensamide(TM)in           II/III;                      226            Sensamide(TM)(i.v.) with
                     NSCLC                     controlled,                                 radiation - 113;
                                               randomized,                                 Radiation only - 113
                                               open-label

- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-02               Comparative study         I; placebo,                   18            All patients receive
                     in healthy                controlled,                                 one dose of placebo
                     volunteers of             double-blind                                (i.m.), Sensamide(TM)
                     Placebo,                  cross-over                                  (i.v.), Neu-Sensamide(TM)
                     Sensamide(TM)and                                                      (i.m.) and
                     Neu-Sensamide(TM)                                                     Neu-Sensamide(TM)(i.m.)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-03               Neu-Sensamide(TM)in       III; controlled,             226            Neu-Sensamide(TM)(i.m.
                     NSCLC                     randomized,                                 or i.v.) with
                                               open-label                                  radiation - 113;
                                                                                           Radiation only - 113


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-04               Neu-Sensamide(TM) in      I/II;                         15            All patients on
                     glioblastoma              uncontrolled, dose                          Neu-Sensamide(TM) (i.v.
                                               escalation                                  or i.m.)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-05               Neu-Sensamide(TM) in      I/II;                         20            All patients on
                     NSCLC                     uncontrolled, dose                          Neu-Sensamide(TM) (i.v.
                                               escalation                                  or i.m.)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-06               Neu-Sensamide(TM) in      I; uncontrolled,              15            All patients on
                     glioblastoma              dose escalation                             Neu-Sensamide(TM) (i.v.
                                                                                           or i.m.)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-07               Neu-Sensamide(TM)in       I; single-dose,               10            All patients on
                     NSCLC                     tumor uptake,                               Neu-Sensamide(TM)(i.m.)
                                               pre-surgery

- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-09               Neu-Sensamide(TM)in       II; uncontrolled,             60            Radiation and
                     NSCLC                     combination study                           Neu-Sensamide(TM)in
                                                                                           combination with Taxol
                                                                                           and Cisplatin
- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-10               Neu-Sensamide(TM)in       II; uncontrolled,             60            Radiation and
                     NSCLC                     combination study                           Neu-Sensamide(TM)in
                                                                                           combination with
                                                                                           Cisplatin and Navelbine


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-401              OXi-104 in                I;                            15            Patients scheduled for
                     miscellaneous             pharma-cokinetics                           OXi-104 in combination
                     cancers                   and dose                                    with 5-FU (a
                                               escalation,                                 chemo-therapeutic
                                               open-label                                  agent)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
OXi-402              OXi-104 in                I; uncontrolled,              15            Patients scheduled for
                     miscellaneous             dose escalation,                            OXi-104 in combination
                     cancers                   open-label                                  with Cisplatin (a
                                                                                           chemo-therapeutic
                                                                                           agent)


- -------------------- ------------------------- -------------------- ------------------ ----------------------------
BU-01                Cordycepin in             I;                            30            Patient groups on
                     leukemia                  pharmaco-kinetics,                          various doses to
                                               dose escalation,                            determine maximum
                                               open-label                                  tolerated dosage
</TABLE>




<TABLE>
<CAPTION>
Study Code           Drug/Indication                Country                               Status

- -------------------- ---------------------------- ------------------------------------- ---------------------------
<S>                  <C>                             <C>                                  <C>  
Lu-01                Sensamide(TM)in NSCLC           Sweden                               Completed; Published 1995

- -------------------- ---------------------------- ------------------------------------- ---------------------------
OXi-01               Sensamide(TM)in NSCLC           Norway; Denmark; Sweden;             Completed with 218
                                                     Germany; UK                           patients

- -------------------- ---------------------------- ------------------------------------- ---------------------------
OXi-02               Comparative study in            UK                                   Completed
                     healthy volunteers of
                     Placebo, Sensamide(TM)
                     and Neu-Sensamide(TM)

- -------------------- ---------------------------- ------------------------------------- ----------------------------
OXi-03               Neu-Sensamide(TM) in NSCLC      Norway; Denmark; Sweden;              Ongoing
                                                     Germany; UK; USA

- -------------------- ---------------------------- ------------------------------------ -----------------------------
OXi-04               Neu-Sensamide(TM) in            Sweden                                Ongoing
                     glioblastoma
- -------------------- ---------------------------- ------------------------------------- ---------------------------
OXi-05               Neu-Sensamide(TM) in NSCLC      USA                                   Ongoing

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

OXi-06               Neu-Sensamide(TM) in            USA                                   Ongoing
                     glioblastoma
- -------------------- ---------------------------- ------------------------------------- ---------------------------

OXi-07               Neu-Sensamide(TM) in NSCLC      Sweden                                Ongoing

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

OXi-09               Neu-Sensamide(TM) in NSCLC      USA                                   Ongoing

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

OXi-10               Neu-Sensamide(TM) in NSCLC      USA                                   Ongoing

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

OXi-401              OXi-104 in                      USA                                   Ongoing
                     miscellaneous cancers
- -------------------- ---------------------------- ------------------------------------- ---------------------------

OXi-402              OXi-104 in                      USA                                   Ongoing
                     miscellaneous cancers
- -------------------- ---------------------------- ------------------------------------- ---------------------------

BU-01                Cordycepin in leukemia          USA                                   Ongoing
</TABLE>

Certain terms and abbreviations used in the foregoing table are explained in the
Glossary on page --.
<PAGE>
DNA Repair Stimulating Products
- -------------------------------

     Cancer,  as well as the general  deterioration of the body leading to aging
disorders  connected  to  immunity,  is  generally  recognized  in medicine as a
mutational  disease  arising from the build-up of genetic  damage in  unrepaired
areas  of  DNA.  By  enhancing  DNA  repair  in the  inactive  areas  of the DNA
structure,  genetic  damage  build-up  may be reduced  with a reduction  in cell
mutation.  OXiGENE research in this area has to date concentrated on identifying
compounds  that, the Company  believes,  may slow the natural  production of DNA
repair inhibitors  produced by the body when inflammatory cells are activated as
an early defense against infections or cancer cells. The Company believes, based
on its research to date, that by blocking this natural  production of DNA repair
inhibitors by  inflammatory  cells, a net increase in DNA repair capacity can be
achieved.

     The  Company  has  developed  a  screening   method  based  on  DNA  repair
measurements of in vivo-exposed  spleen and cells.  The Company has identified a
new mixture of naturally-occurring  compounds that it believes should be capable
of  stimulating  DNA repair,  and which is  currently  under  evaluation  by the
Company in human cell and animal  models to improve  enhancement  of DNA repair.
OXiGENE has filed an international  (PCT) patent application for this mixture of
potential DNA repair  stimulators.  There can be no assurance  whether or when a
patent may be issued or its coverage, if one is issued.

     The Company  believes  that  DNA-repair-enhanced  compounds  may be used to
supplement,  or under certain circumstances  replace,  chemopreventive or cancer
retardant agents already in use for cancer treatment, such as Tamoxifen(TM),  as
well  as   chemopreventive   agents  in  various  stages  of  development.   Any
DNA-repair-enhancer  drugs  currently being developed by OXiGENE are expected to
be based on  naturally  occurring  compounds,  rather  than  synthetic  analogs.
Consequently,  the Company  believes that they may be less inherently toxic than
newly-synthesized chemopreventive agents developed by others that are already in
clinical  trials.  However,  there can be no assurance  that the Company will be
able to  develop  any such a drug,  or if  developed,  that such a drug could be
successfully marketed.


Product Development and Regulatory Processes

     Research in areas of interest to the Company typically  initially  involves
optimization  of leading  chemical  structures  into leading  compounds.  Once a
leading compound has been identified,  the preclinical phase commences.  In that
phase,  certain  selected  compounds are tested for  therapeutic  potential in a
number of animal models and undergo  laboratory  testing,  with the objective of
characterizing the investigated  compounds in relation to existing treatment and
getting a first indication of the compounds' development  potential.  Successful
preclinical work may lead to the filing of an IND, or a foreign equivalent, with
the  relevant  national  regulatory  authorities.  The  IND is a  permission  to
administer  the  compound  to humans in  clinical  trials in the United  States.
Several years of research and testing  generally are necessary before an IND may
be obtained and clinical  development  may  commence.  There can be no certainty
that submission of an IND will result in FDA  authorization to commence clinical
trials or that  authorization  of a particular phase of a clinical trial program
will  result in  authorization  of other  phases or that the  completion  of any
clinical trials will result in FDA approval of a new product.

     The clinical  development of new drugs is subject to approval by the health
authorities in individual countries,  which have broad discretionary powers. For
example,  in the United  States,  the FDA reviews  the  results of all  clinical
studies  and can  discontinue  a trial  at any time if it  concludes  there is a
significant safety issue, or if there is convincing evidence that the therapy is
not effective for the chosen indication. The requirements regarding the duration
of a clinical phase vary considerably among countries.  For life threatening and
severely debilitating  conditions where products provide meaningful  therapeutic
benefit over existing  treatments or where no satisfactory  treatment  currently
exists,  however,  it is possible to accelerate the  development  process in the
United  States  through  the  "Accelerated  Drug  Approval  Program."  In  other
countries, the trial process for drugs directed toward life threatening diseases
is shortened typically by lowering the requirements regarding the patient sample
size required to be met in the trials.

     The development and testing,  time periods  mentioned below are indications
only and may vary and be materially  longer.  Upon successful  completion of the
development  program, a New Drug Application  ("NDA"),  or a foreign equivalent,
may be submitted to the appropriate  regulatory  authorities,  and, if approved,
the product may then be marketed upon the terms and conditions of such approval.
Submission  of an NDA does not assure  that the FDA will  approve a product  for
manufacturing  and marketing.  Clinical trials are typically  conducted in three
sequential phases, but the phases may overlap.

     Phase I. The purpose of a Phase I study is to evaluate  the toxicity of the
tested  compound  and to  establish  how the tested  compound is  tolerated  and
decomposed in the human body. A Phase I clinical trial  traditionally  tests the
compound  for  safety   (adverse   effects),   dosage   tolerance,   metabolism,
distribution,  excretion  and  pharmacodynamics  in a  small  group  of  healthy
individuals. A Phase I study may last up to one year.

     Phase II. A Phase II study  marks the  beginning  of  clinical  trials on a
limited  number of patients to (i)  determine  the  efficacy of the compound for
specific  indications,  (ii) determine  dosage  tolerance and optimal dosage and
(iii) identify  possible  adverse effects and safety risks.  The Phase II trials
also seek to establish the most effective  route of  administration.  Trials are
conducted on a larger, but still limited number of carefully monitored patients.
A Phase II study may last up to two and one-half years.

     Phase  III.  If  preliminary  evidence  suggesting  effectiveness  has been
obtained  during  Phase  II  evaluations  and the  compound  is found to have an
acceptable  safety  profile  in Phase II  evaluations,  a Phase III trial may be
undertaken.  A Phase III study is an extensive  clinical trial involving a large
number of patients.  The number of patients in a Phase III trial program depends
to a great extent on the clinical  indications  that the drug addresses.  Trials
are often double-blinded and involve a detailed  statistical  evaluation of test
results. The compound is tested against placebo and existing treatment,  if such
treatment is available.  The product is  manufactured  in commercial  quantities
(batch  manufacturing)  and tested for shelf  life,  or  stability,  and further
evaluation of the clinical  efficacy and safety of the compound  takes place.  A
Phase III  study  may last  several  years  and is the most  time-consuming  and
expensive part of a clinical trial program.

     There can be no assurance  that Phase I, Phase II or Phase III testing will
be completed  successfully  within any  specified  time period,  if at all, with
respect to any of the Company's products.

     OXiGENE,  like other  pharmaceutical  companies,  will be subject to strict
controls  covering  the  manufacture,  labeling,  supply  and  marketing  of any
products  it may  develop  and  market.  The most  important  regulation  is the
requirement  to obtain and  maintain  regulatory  approval of a product from the
relevant  regulatory  authority to enable that product to be marketed in a given
country.  Further, OXiGENE is subject to strict controls over clinical trials of
its potential pharmaceutical products.

     The   regulatory   authorities   in  each  country  may  impose  their  own
requirements  and may refuse to grant,  or may  require  additional  data before
granting,  an approval  even though the  relevant  product has been  approved by
another  authority.  The United  States and European  Union  ("EU"),  as well as
certain  other  countries  such as Japan and  Israel,  countries  have very high
standards  of technical  appraisal  and,  consequently,  in most cases a lengthy
approval process for pharmaceutical  products.  The time required to obtain such
approval in particular  countries varies, but generally takes from six months to
several  years,  if at all,  from the date of  application,  depending  upon the
degree of control  exercised by the  regulatory  authority,  the duration of its
review  procedures and the nature of the product.  The trend in recent years has
been towards stricter regulation and higher standards.

     In the United  States,  the  primary  regulatory  authority  is the FDA. In
addition to regulating clinical  procedures and processes,  the FDA investigates
and  approves  market  applications  for  new  pharmaceutical  products  and  is
responsible  for regulating  the labeling,  marketing and monitoring of all such
products,  whether marketed or under investigation.  Upon approval in the United
States, a drug may only be marketed for the approved indications in the approved
dosage  forms and  dosages.  In  addition to  obtaining  FDA  approval  for each
indication  to be treated with each product,  each  domestic drug  manufacturing
establishment  must  register with the FDA, list its drug products with the FDA,
comply with cGMP  requirements  and be subject to inspection by the FDA. Foreign
manufacturing  establishments  distributing drugs in the United States also must
comply  with cGMP  requirements  and list  their  products  and are  subject  to
periodic  inspection by the FDA or by local authorities under agreement with the
FDA.

     In Europe,  the  European  Committee  for  Proprietary  Medicinal  Products
provides a mechanism for EU-member states to exchange information on all aspects
of product  licensing  and assesses  license  applications  submitted  under two
different   procedures   (the   multistate   and  the  high-tech   concentration
procedures).  The EU has  established  a European  agency for the  evaluation of
medical   products,   with  both  a  centralized   community   procedure  and  a
decentralized  procedure,  the latter  being  based on the  principle  of mutual
recognition between the member states.

     There can be no assurances  that any of those products will ever obtain the
governmental  approvals  necessary  to  permit  commercial  sales  of any of its
products.  Further,  even if regulatory approval of a product is obtained,  such
approval may entail limitations on the indicated uses for which that product may
be marketed.


Research and Development and Collaborative Arrangements

     OXiGENE's  research  and  development  programs  are  generally  pursued in
collaboration  with  academic  and  other  institutions.  The  Company  incurred
approximately  $7.3  million,  $4.8  million and $2.8  million in  research  and
development  expenses  in the years  ended  December  31,  1997,  1996 and 1995,
respectively. Substantially all of these amounts represent external research and
development expenditures.

     Currently,  the Company is not  required to pay any  royalties or licensing
fees for technology and products developed with financial  assistance from or at
the facilities of such agencies and institutions,  except for a 5% gross royalty
payable in respect of an exclusive  worldwide license of the patent covering the
PARP diagnostic  assay and certain costs related to the filing,  prosecuting and
maintaining  of patents  and  copyrights.  Recently,  however,  the  Company has
entered  into  agreements  with a number of  universities,  particularly  in the
United  States,  that may require  payment of royalties in respect of inventions
made in the course of work performed  pursuant to those  agreements in the event
the Company exercises its option under those agreements to acquire an exclusive,
world-wide  license.  Generally,  royalty  rates  are  not  fixed  and  will  be
negotiated  when and if the Company  exercises  its option to acquire a license.
There can be no assurance  that such  licensing  negotiations  will be concluded
successfully  or that any  royalties  or fees will not be  material  as to their
amount.

     Unless  otherwise  noted,  each  of  the  below-described   agreements  and
arrangements  terminates  upon  completion of the study or the expiration of one
year, whichever is earlier.

     University of Lund, Lund, Sweden. In 1987, Dr. Ronald Pero, OXiGENE's Chief
Scientific  Officer,  was appointed to lead an  international  effort to develop
biomarkers and to contribute to the basic knowledge of DNA repair in relation to
human diseases, and was awarded professorial  privileges and laboratory space at
the University of Lund in Lund,  Sweden.  The program is conducted  primarily at
the  Univerity  of  Lund's  Wallenberg  Laboratory.  The  Wallenberg  Laboratory
specializes  in providing  research  space to selected  research  projects being
developed  within the academic  community.  Currently,  the program  focuses its
research efforts on immunology and tumor biology,  areas directly related to the
Company's technology development.  Most of the Company's research,  development,
preclinical  testing  and  clinical  trials are  carried  out at the  Wallenberg
Laboratory,  financed by research  grants and contracts.  The University of Lund
has not  claimed  any  proprietary  interest in the  products  developed  by the
Company there.

     In April 1994, the Department of Oncology, Lund University Hospital and the
Company  entered into an agreement  with respect to the  multicentered  clinical
trial of 226  patients  to evaluate  Sensamide(TM)  as a  radiosensitizer.  This
agreement  provides that the Department of Oncology,  Lund  University  Hospital
will provide all the clinical items  necessary for the study in accordance  with
the protocol approved by the Swedish Medical Drug Agency.

     Boston Medical Center, Boston,  Massachusetts.  In August 1997, the Company
entered into a  collaborative  research  agreement  with Boston  Medical  Center
Corporation,  an affiliate of Boston University Medical Center ("BMC"), pursuant
to which an ongoing  research  program will be conducted by Dr. Ronald Pero, Dr.
Ronald  McCaffrey and Dr. Alan Sugar.  The BMC research  program consists of the
following  components:  (i) research by Dr. Pero into the DNA repair  inhibiting
and other disease specific activities of N-substituted benzamides; (ii) research
by Drs.  McCaffrey  and  Sugar  into  Cordycepin,  Deoxycoformycin  and  related
compounds as novel therapeutic  agents in the treatment of cancer and infectious
diseases,  and (iii) research into the potential  therapeutic  synergies between
N-substituted   benzamides  and  cordycepin  and  related  compounds,   and  the
identification  of other,  novel  therapeutic  agents and  develop  and  conduct
clinical  trials for such agents.  The budget for the  research  program will be
fixed  from  time  to  time  by  a  committee  consisting  of  OXiGENE  and  BMC
representatives  established to administer the research  program.  Dr. McCaffrey
will continue to conduct a Phase I clinical  study of Cordycepin in  combination
with  Pentostatin  in  patients  with  refractory  TdT-positive  acute  lymphoid
leukemia  (the Phase I study  commenced  in the first  quarter of 1997,  under a
prior  agreement  dated  December  1,  1996  between  the  Company  and  BMC) in
collaboration  with Boston  University and the National  Cancer  Institute.  The
initial term of the  agreement  expires on June 30,  2000,  although the term is
automatically  extended for additional  twelve-month periods,  provided that the
agreement may be  terminated  by either party upon twelve  months' prior written
notice or upon  certain  other  events.  OXiGENE  has an option  to  acquire  an
exclusive, world-wide,  royalty-bearing license with respect to any invention or
discovery  made during and as a part of the research  performed  pursuant to the
agreement.

     Swedish  Cancer  Society,  Stockholm,  Sweden.  In 1992, the Swedish Cancer
Society  awarded Dr.  Ronald Pero,  in his  capacity as a faculty  member of the
University of Lund, a three-year grant for a total of approximately $0.3 million
to investigate  benzamide and nicotinamide  analogs relating to Sensamide(TM) as
radiosensitizers.  This grant was renewed in 1995 for a one year period totaling
approximately  $0.2  million.  The Company was not the recipient of any of these
funds. The study's  principal  objective was to determine what chemical features
give benzamide/nicotinamide compounds multiple forms of radiosensitizing action.
Although  the  grant  has  not  been  formally  renewed,   research  under  this
arrangement continues on an ongoing basis.

     In 1992, Dr. Pero, in his capacity as a faculty member of the University of
Lund, was awarded another Swedish Cancer Society research grant (under principal
investigator  Professor  Goran  Berglund),  for a total  of  approximately  $0.4
million over a three-year  period,  to direct the biological  bank and biomarker
program  portion of the Malmo Diet Study.  This project had its funding  renewed
until October 1996, but research under this arrangement has continued since then
research under this  arrangement  continues on an ongoing basis without a formal
renewal of the funding. The Company was not the recipient of any of these funds.
The  Malmo  Diet  Study,  sponsored  in part by the World  Health  Organization,
involves a large ongoing controlled case study in which individuals  between the
ages of 46 years and 64 years, living in the city of Malmo, Sweden, were invited
to  participate  in a study  designed to evaluate  dietary  factors as causative
agents for cancer.  Patient  enrollment  for the study was  completed in October
1996.  The city of Malmo was  selected as the site of this study  because of the
historically high incidence of cancer in its relatively homogeneous population.

     University  of  Kentucky  Research  Foundation,  Lexington,  Kentucky.  The
Company  has  entered  into three  agreements  with the  University  of Kentucky
Research  Foundation,  under which  research will be conducted by: (i) Professor
Myron  K.  Jacobson,  into  the  structural  basis  of  the  difference  between
Sensamide(TM) and Neu-Sensamide(TM); (ii) Professor Elaine L. Jacobson, into the
effects  of   Sensamide(TM),   Neu-Sensamide(TM)   and  Oxi-104  on   ADP-Ribose
metabolism;  and  (iii)  Associate  Professor  Ching-Shih  Chen,  to  synthesize
Combretastatin phosphate.

     Dr. Michael Horsman, the Danish Cancer Society,  Aarhus,  Denmark. Under an
agreement, dated October 9, 1997, with the Danish Cancer Society,  Department of
Experimental  Clinical  Oncology,  Dr.  Horsman will conduct  research  into the
enhancement of radiation  damage and  chemotherapeutic  agents by  N-substituted
benzamides, and the anti-tumor activity of Combretastatin.

     Dr. David J. Chaplin, the Gray Laboratory Cancer Research Trust, Middlesex,
United Kingdom. Dr. Chaplin is Head of the Tumour  Microcirculation Group at the
Gray  Laboratory  Cancer  Research  Trust  ("Gray")  and a director of Angiogene
Pharmaceuticals  Ltd. Dr.  Chaplin also serves as the Secretary of the Company's
Scientific Advisory Board. Under an agreement,  dated December 12, 1997, between
the Company and Gray,  Dr.  Chaplin will conduct  research into the vascular and
therapeutic effects of Combretastatin in various tumor models.

     Dr. David J. Chaplin, Angiogene Ltd., Oxfordshire, United Kingdom. Under an
agreement,  dated April 1, 1997, with Angiogene  Pharmaceuticals Ltd., a Company
that is affiliated with Dr. Chaplin but is not affiliated with the company,  Dr.
Chaplin will conduct research into the anti-inflammatory and anti-tumor necrosis
factor (alpha) effects of N-substituted benzamides and nicotinamides.

     Dr. Mark Smulson, Georgetown University,  Washington D.C. Under a September
1997 research  agreement with  Georgetown  University,  Dr. Smulson will conduct
research into the interference of N-substituted  benzamides with the functioning
of PARP and related enzymes.

     Dr. Dietmar W. Siemann,  University of Florida,  Gainesville,  Florida. The
Company has entered into two agreements  with the  University of Florida,  under
which research will be conducted by Dr.  Siemann.  Under a July 1997  agreement,
Dr. Siemann will conduct research into the molecular interactions underlying the
radio-and chemosensitizing effects of N-substituted benzamides. Under an October
1997  agreement,  Dr.  Siemann  will  conduct  research  into the  influence  of
Combretastatin on (i) the anti-tumor efficacy of certain  chemotherapeutic drugs
and (ii) the metastatic spread of cancer cells.

     Professor K. Kian Ang, The University of Texas M.D. Anderson Cancer Center,
Houston,  Texas.  Under a sponsored  laboratory study agreement,  dated June 11,
1997,  with the University of Texas M.D.  Anderson  Cancer Center,  Dr. Ang will
conduct research into the enhancing effect of  Neu-Sensamide(TM)  and Oxi-104 on
radiation-induced apoptosis in various tumor models.

     Professor Robert R. Kane, Baylor University, Waco, Texas. Under a sponsored
program agreement,  dated June 24, 1997, with Baylor University,  Professor Kane
will conduct research into the molecular basis for the  radiosensitizing  action
of Sensamide(TM) and other N-substituted benzamides.

     Arizona State University,  Tempe,  Arizona.  The Company has entered into a
technology  development  agreement,  dated  May 27,  1997,  with  Arizona  State
University ("ASU"),  under which the Company has the exclusive option to acquire
an exclusive  worldwide license to develop and commercialize the technology that
relates to a family of anti-cancer  compounds known in the scientific  community
by the name combretastatin,  including  Combretastatin,  the University's patent
rights to develop, use and sell Combretastatin A-4. The Company's option expires
on May 28, 1999,  provided  that the  agreement may be terminated by the Company
upon  thirty  days' prior  written  notice or upon  certain  other  events.  The
agreement  also  gives  the  Company  the right to file an IND with  respect  to
clinical testing of  Combretastatin  and the right to technical  assistance from
representatives of ASU.


Patents and Trade Secrets

     Certain of OXiGENE's current products are based on available compounds that
are produced by others and are not subject to patent protection  currently.  The
Company  anticipates  that any products it develops  hereafter may include or be
based on the same or other compounds owned or produced by unaffiliated  parties,
as well as synthetic compounds it may discover.  Although the Company expects to
seek patent  protection  for any compounds it  discovers,  there is no assurance
that any or all of them will be subject to effective patent protection. Further,
the development of regimens for the  administration  of  pharmaceuticals,  which
generally  involve  specifications  for the  frequency,  timing  and  amount  of
dosages,  has been, and the Company  believes will continue to be,  important to
the Company's efforts, although those processes, as such, may not be patentable.

     Patent Protection.  It is the Company's policy to seek patent protection in
the United States and in foreign  countries.  Primarily  because of  differences
among  patent  laws in  various  jurisdictions,  the  scope  of,  and  hence the
protection   afforded  by,  any  patents  OXiGENE  may  receive  may  vary  from
jurisdiction  to  jurisdiction  even though they relate  essentially to the same
subject matter.

     The patent position of firms in the Company's  industry  generally involves
highly   complex  legal  and  other  issues,   resulting  in  both  an  apparent
inconsistency  regarding the breadth of claims  allowed in United States patents
and general  uncertainty as to their legal  interpretation  and  enforceability.
Accordingly,  there can be no assurance  that patent  applications  owned by the
Company will result in patents being issued or that, if issued, the patents will
afford competitive protection.

     Further,  there can be no assurance that products or processes developed by
the Company will not be covered by third party patents,  in which case continued
development and marketing of those products or processes could require a license
under such patents.  There can be no assurance that if a legal action were to be
brought against the Company on the basis of any third party patents, such action
would be resolved in the Company's favor. An unfavorable result against the
Company could result in monetary damages and injunctive relief.  Further, even a
favorable  result  could cause  expenditure  of  substantial  monetary and other
resources in connection with the Company's defense against any such action.

     Granted  Patents  and  Pending  Applications.  The  following  is  a  brief
description of the Company's current patent position,  both in the United States
and abroad.  As U.S. patent  applications  are maintained in secrecy by the U.S.
Patent and  Trademark  Office until  patents  issue and because  publication  of
discoveries  in the  scientific  or patent  literature  often lags behind actual
discoveries,  OXiGENE  cannot  be  certain  that it was  the  first  creator  of
inventions covered by its pending  applications or that it was the first to file
patent applications for those inventions.

     As of March 8, 1998,  the  Company is the  assignee  of four  granted  U.S.
patents,  five pending U.S. patent  applications,  and of granted patents and/or
pending  applications  in other  countries  (and/or  international  applications
designating other countries)  corresponding to three of the granted U.S. patents
and  all  five  of the  pending  U.S.  applications.  One of  the  pending  U.S.
applications was filed in 1996;  another is the national phase (entered in 1998)
of an international application based on a U.S. provisional application filed in
1995. Three of the pending U.S. applications were filed in 1997, of which one is
a continuation of an original U.S.  application filed in 1994, and two are based
on a U.S. provisional  application filed in 1996. In addition,  the Company will
be the assignee of another pending U.S.  provisional patent application filed in
1997, and of expected (but not yet filed) international and foreign counterparts
thereof.

     Specifically,  the Company is the assignee of a U.S. patent,  granted April
20, 1993, for glutathione-s-transferase mu (an inherited enzyme) as a measure of
drug  resistance,  covering a test for  resistance to  nitrosoureas  (a class of
chemotherapeutic  agents).  In  addition,  the Company is the assignee of a U.S.
patent,  granted  August  23,  1994,  for tumor or cancer  cell-killing  therapy
(covering methods of using N-substituted  benzamides including Sensamide(TM) and
Neu-Sensamide(TM)  as radio- and  chemosensitizers),  and of granted  patents in
Australia,  Canada, Europe (designating 13 countries),  Ireland, Israel, Mexico,
Russia and South Africa and an allowed patent application in Japan (as well as a
pending application in Denmark)  corresponding  thereto. The Company is also the
assignee  of two U.S.  patents,  both  granted  October 1, 1996,  for methods of
administering   and   pharmaceutical   formulations   containing   N-substituted
benzamides    and/or   acid   addition    salts   thereof    (covering,    e.g.,
Neu-Sensamide(TM))  and for methods of administering  phenothiazines and/or acid
addition  salts  thereof,  and of a granted  South  African  patent and  pending
European and other foreign applications corresponding to these two U.S. patents.
The Company's  pending U.S.  applications and international  counterparts  cover
further methods of testing or treatment and  compositions,  including methods of
using the Oxi-104 product.

     Moreover,  the Company is the exclusive licensee of a U.S. patent,  granted
January 9, 1996,  for a diagnostic  test involving  measurements  related to the
cellular  process  of DNA  repair  and  drug  resistance,  and is the  exclusive
licensee  of   corresponding   granted  Canadian  and  European  patents  and  a
corresponding  pending  Japanese patent  application.  The owner of the licensed
patents  and  application  is  Preventive   Medicine   Institute,   a  New  York
not-for-profit  corporation  affiliated with the Strang Cancer Prevention Center
in New York, New York.

     Trade Secrets and Technological  Know-How.  While the Company generally has
and will  continue to pursue a policy of seeking  patent  protection to preserve
its  proprietary  technology,  it also  has and will  continue  to rely on trade
secrets,   unpatented  proprietary  information  and  continuing   technological
innovation  to develop and maintain its  competitive  position.  There can be no
assurance,  however,  that others will not independently  develop  substantially
equivalent  proprietary  information  and technology or otherwise gain access to
such or equivalent trade secrets,  proprietary information or technology or that
OXiGENE  can  meaningfully  protect  its  rights  to such  secrets,  proprietary
information and technology.

     OXiGENE  generally  requires its employees and  Scientific  Advisory  Board
members  to  enter  into  confidentiality  agreements  with the  Company.  Those
agreements provide that all confidential  information developed or made known to
the individual  during the course of the relationship is to be kept confidential
and not to be disclosed to third parties, except in specific  circumstances.  In
the case of employees, the agreements also provide that all inventions conceived
by such employees  shall be the exclusive  property of OXiGENE.  There can be no
assurance,  however,  that any such agreement will provide meaningful protection
for the Company's  trade secrets,  proprietary  information or technology in the
event of unauthorized use or disclosure of such information.  Moreover, although
the Company has  confidentiality  agreements with the institutions  that perform
its research,  development,  preclinical tests and clinical trials,  the Company
has no such agreements with the employees of such institutions, and there can be
no assurance that these employees will abide by the terms of such agreements.


Employees

     The  Company's  policy  has  been,  and  continues  to be,  to  maintain  a
relatively small number of executives and other employees and to rely as much as
possible  on  consultants   and   independent   contractors  for  its  research,
development,  preclinical  tests and clinical trials.  As of March 31, 1997, the
Company had  twenty-four  full-time  employees,  of which twenty were engaged in
research  and  development  and  monitoring  of  clinical  trials.  Most  of the
Company's  preclinical tests and clinical trials are subcontracted and performed
at the University of Lund,  Sweden,  and at other European and U.S.  centers and
organizations, including ILEX Oncology Inc., a contract research organization in
San Antonio, Texas.


Scientific Advisory Board

     In August 1992, the Company  established a Scientific Advisory Board, which
currently consists of nine members. The Scientific Advisory Board discusses, and
meets annually to evaluate,  the Company's  research and  development  projects.
Members of the Scientific  Advisory Board receive no cash compensation,  but are
reimbursed for reasonable  out-of-pocket  expenses, and have, from time to time,
received  warrants or options to purchase shares of Common Stock of the Company.
Prior to the  establishment  of the Scientific  Advisory  Board,  certain of its
members  advised  the  Company  on  certain  projects.  Certain  members  of the
Scientific  Advisory Board also have other  relationships with the Company.  See
"--Research and Development and Collaborative  Arrangements." The members of the
Company's Scientific Advisory Board are:

     Hans Wigzell,  M.D.,  Ph.D.,  is Professor of Immunology at the  Karolinska
Institute, Stockholm, Sweden, a well-known medical research institute in Europe.
Professor  Wigzell is the chairman of OXiGENE's  Scientific  Advisory  Board and
also serves as an advisor to the Company's  Board of Directors.  He has for many
years been a member of the Nobel  committee for the prize in medicine,  of which
he also has served as chairman.  Professor  Wigzell is currently a member of the
editorial board of several international medical journals and has published more
than 400 articles in the areas of tumor  biology,  immunology,  cell biology and
infectious diseases.

     David J. Chaplin, Ph.D., is head of the Tumor Microcirculation Group at the
Gray  Laboratory,  Mount  Vernon  Hospital,  Middlesex,  United  Kingdom,  and a
consultant to the Company.  The Gray Laboratory is a leading  radiation  biology
research  laboratory.  He is a member of the Cancer Research  Campaigns Clinical
Trials committee.  Dr. Chaplin has published more than 100 papers in the area of
chemical radiosensitizers and tumor biology.

     Michael R. Horsman, Ph.D., D.M.Sc., is an Associate Professor in the Danish
Cancer  Societies'  Department  of  Experimental  Oncology at Aarhus  University
Hospital, Denmark. Dr. Horsman has published more than 100 papers in the area of
tumor biology and the chemical  modification of radiation,  drug and heat damage
in tumors and normal tissues.

     Myron  Jacobson,  Ph.D.,  is  Professor  and  Chairman  of the  Division of
Medicinal Chemistry and Pharmaceutics,  College of Pharmacy, and a member of the
Lucille Parker Markey Cancer Center of the University of Kentucky.  Dr. Jacobson
has published  more than 100 papers in the area of  biological  responses to DNA
damage.

     Dick Killander,  M.D., Ph.D.,  is Professor and Chairman of  the Department
of Oncology,  University of Lund Hospital, Lund, Sweden. Dr. Killander serves on
the board of the Swedish  Cancer  Foundation,  and has  published  more than 100
articles in the areas of quantitative  cytochemistry and clinical oncology.  Dr.
Killander is the  principal  clinical  investigator  for the  Company's  ongoing
clinical trials.

     Ronald P.  McCaffrey,  M.D.,  is  Professor  of  Medicine,  and Head of the
Developmental  Therapeutics Unit at Boston  University  School of Medicine.  Dr.
McCaffrey  has  published  more than 100 papers in the  general  field of cancer
biology and treatment,  with particular  emphasis on leukemia and lymphoma.  For
the past  five  years he has been  Chairman  of the  Committee  on  Medical  and
Scientific  Affairs at the Leukemia Society of America,  and a member of several
professional journal editorial boards.

     Dietmar W. Siemann, Ph.D., is Professor and Associate Chair for Research in
the Department of Radiation  Oncology at the University of Florida.  Dr. Siemann
is a tumor biologist who has a particular  interest in the interface between the
laboratory and the clinic. He has published more than 135 papers in the areas of
the tumor microenvironmental and chemical modification of cancer treatments.

     Mark E. Smulson, Ph.D., is Professor of Biochemistry and Molecular Biology,
Georgetown  University Medical Center,  Washington,  D.C., and is co-director of
the  University's  Lombardi  Cancer  Center's  Program of  ADP-Ribosylation  and
Radiation Biology. Dr. Smulson has published over 200 papers and chapters on the
molecular  biology  aspects  of the ADPRT  (PARP)  repair  enzyme  and its gene.
Recently,  he was  involved in the first  purification  of apopain  (Caspase-3),
which cleaves PARP during programmed cell death  (apoptosis),  and has continued
to study the  regulatory  involvement  of PARP,  in the latter  process in human
osteosarcoma  cells and PARP knockout  murine  cells.

     Alan Sugar,  M.D., is Professor of Medicine,  Boston  University  School of
Medicine,  Boston, MA, and is Director of the Clinical Mycology Center at Boston
Medical Center. Dr. Sugar is an infectious diseases physician who specializes in
medical  mycology,  which are diseases caused by fungi.  His research  interests
include pre-clinical and clinical antifungal drug development and the mechanisms
of action  of  antifungal  drugs.  He has  published  over 100  papers  and book
chapters and is the co-author of a book on medical mycology.


Competition

     The  industry in which the Company is engaged is  characterized  by rapidly
evolving technology and intense competition.  The Company's competitors include,
among others,  major pharmaceutical and biotechnology  companies,  many of which
have financial,  technical and marketing  resources  significantly  greater than
those of the Company. In addition, many of the small companies that compete with
the Company have also formed collaborative relationships with large, established
companies   to   support    research,    development,    clinical   trials   and
commercialization of products that may be competitive with those of the Company.
Academic  institutions,  governmental  agencies  and other  public  and  private
research  organizations  are also  conducting  research  activities  and seeking
patent protection and may  commercialize  products on their own or through joint
ventures or other collaborations.

     The  Company is aware of a number of  companies  engaged  in the  research,
development  and  testing  of new cancer  therapies  or ways of  increasing  the
effectiveness  of existing  therapies.  Such  companies  include,  among others,
Agouron Pharmaceuticals,  Inc.,  Bristol-Myers Squibb Company,  Ciba-Geigy Ltd.,
Eli  Lilly  and  Company,   Glaxo  Wellcome  PLC,  Johnson  &  Johnson,   Matrix
Pharmaceuticals,  Inc., NeoPharm, Inc.,  Pharmacyclics,  Inc., Pierre Fabre S.A.
and U.S.  Bioscience Inc., some of whose products have already received,  or are
in the  process of  receiving,  regulatory  approval  or are in later  stages of
clinical trials. The Company is also aware of companies engaged in the research,
development  and testing of  diagnostic  assays for cancer,  including  Introgen
Therapeutics,  Inc.,  AntiCancer Inc., Transgene S.A. and Medarex Inc. There are
other  companies  that have  developed,  or are in the  process  of  developing,
technologies  that are,  or in the  future  may be,  the  basis for  competitive
products in the field of cancer therapy or other products the Company intends to
develop. Some of those products may have an entirely different approach or means
of accomplishing the same desired effects as the products being developed by the
Company, such as gene transfer therapy,  immunotherapy and photodynamic therapy.
There can be no assurance  that the  Company's  competitors  will not succeed in
developing  technologies  and products  that are more  effective,  safer or more
affordable than those being developed by the Company.

     Radiation  therapy  has  been  increasingly  accepted  as a  complement  to
chemotherapy  in a  multi-modality  treatment  of  NSCLC.  Further,  a number of
organizations have developed new chemotherapeutic  regimens that are under study
in late-stage  clinical trials.  To the best knowledge of the Company,  however,
none of those organizations is, and none of the new forms of non-surgical cancer
treatment  currently  under  development  and in clinical  trials appears to be,
directly competitive with Neu-Sensamide(TM) or Oxi-104 as a sensitizer.

     As the Company's  existing  products are intended to complement and enhance
radiation  therapy and  chemotherapy as applied to NSCLC,  the Company  believes
that  enhancements  in  those  treatments,  particularly  if they  lead to their
successful  application,  could increase the potential  market for the Company's
products,  although there can be no assurance in this regard.  Moreover,  if the
Company's  products also  complement new cancer treating  therapies,  the use of
these new therapies might also expand the Company's potential market.

     The Company  expects that if any of its products gain  regulatory  approval
for sale they will compete primarily on the basis of product  efficacy,  safety,
patient  convenience,  reliability,  price and patent  position.  The  Company's
competitive  position  also will  depend on its  ability to  attract  and retain
qualified scientific and other personnel, develop effective proprietary products
and  implement  joint  ventures  or other  alliances  with large  pharmaceutical
companies in order to jointly market and manufacture its products.


Risk Factors

     This  Annual  Report  contains,  in  addition  to  historical  information,
forward-looking   statements   that   involve   known  and  unknown   risks  and
uncertainties  that may cause the  Company's  actual  results or  outcomes to be
materially  different from those anticipated and discussed herein.  Factors that
could cause or contribute to such  differences  include those discussed below as
well as those discussed elsewhere in this Annual Report.

     History of Losses and Anticipated Future Financial Results;  Uncertainty of
Future  Profitability.  The Company,  as a  development  stage  enterprise,  has
experienced  net losses every year since its  inception  and, as of December 31,
1997, had a deficit  accumulated  during the development  stage of approximately
$25.5 million. The Company anticipates incurring  substantial  additional losses
over at least the next several  years due to, among other  factors,  the need to
expend  substantial  amounts on its continuing  clinical  trials and anticipated
research and development activities and the general and administrative  expenses
associated with those  activities.  The Company has not commercially  introduced
any product and its products are in varying stages of  development  and testing.
The Company's  ability to attain  profitability  will depend upon its ability to
develop  products  that  are  effective  and  commercially   viable,  to  obtain
regulatory  approval for the manufacture and sale of its products and to license
or otherwise  market its products  successfully.  There can be no assurance that
the Company will ever achieve profitability or that profitability,  if achieved,
can be sustained on an ongoing basis. See "Management's  Discussion and Analysis
of Financial Condition and Results of Operations."

     Early  Stage of Product  Development;  Uncertainties  of  Clinical  Trials;
Unproven  Safety  and  Efficacy.  OXiGENE's  products  are in an early  stage of
development.  In order to achieve  profitable  operations on a continuing basis,
the Company,  alone or in collaboration with others, must successfully  develop,
manufacture,  introduce  and market its  products.  The time frame  necessary to
achieve  market success for any  individual  product is long and uncertain.  See
"--Product  Development and Regulatory  Processes." The products currently under
development  by the Company will  require  significant  additional  research and
development and extensive  preclinical and clinical testing prior to application
for   commercial   use.  A  number  of  companies  in  the   biotechnology   and
pharmaceutical industries have suffered significant setbacks in clinical trials,
even after showing promising results in earlier studies or trials.  Although the
Company  has  obtained  favorable  results to date in  preclinical  studies  and
clinical  trials of certain of its products,  such results may not be indicative
of results  that will  ultimately  be obtained in or  throughout  such  clinical
trials, and there can be no assurance that clinical testing will show any of the
Company's  products  to be safe or  efficacious.  Additionally,  there can be no
assurance  that the Company will not encounter  problems in its clinical  trials
that will  cause the  Company  to delay,  suspend or  terminate  those  clinical
trials.  There can also be no assurance  that the Company's  research or product
development efforts or those of its collaborative  partners will be successfully
completed, that any compounds currently under development by the Company will be
successfully  developed into drugs, or that any products will receive regulatory
approval on a timely basis, if at all. If any such problems  occur,  the Company
could be materially and adversely affected.

     Need for Additional  Funds;  Uncertainty of Future  Funding.  The Company's
operations to date have consumed substantial amounts of cash. Negative cash flow
from the  Company's  operations  is expected to continue and even to  accelerate
over at least the next several years. The Company's  capital  requirements  will
depend on numerous factors,  including:  the progress of preclinical testing and
clinical  trials;  the  progress  of  the  Company's  research  and  development
programs;  the time and costs  required  to  obtain  regulatory  approvals;  the
resources  devoted to  manufacturing  methods  and  advanced  technologies;  the
ability to obtain licensing arrangements;  the cost of filing,  prosecuting and,
if necessary,  enforcing patent claims; the cost of commercialization activities
and  arrangements;  and  the  demand  for the  Company's  products  if and  when
approved.  The  Company  will  have to  raise  substantial  additional  funds to
complete  development  of any product or bring  products to market.  Issuance of
additional equity securities by the Company, for these or other purposes,  could
result in dilution to then existing stockholders. There can be no assurance that
additional  financing  will be  available  on  acceptable  terms,  if at all. If
adequate  funds are not  available  on  acceptable  terms,  the  Company  may be
required  to  delay,  scale  back  or  eliminate  one or  more  of  its  product
development  programs or obtain funds through  arrangements  with  collaborative
partners or others that may require the Company to relinquish  rights to certain
of its technologies or products that the Company would not otherwise relinquish,
which may have a material adverse effect on the Company.

     Dependence  on  Others  for  Clinical  Development  and  Manufacturing  and
Marketing.  The  Company  has  limited  experience  in  drug  development,   the
regulatory approval process,  manufacturing and marketing. Other than Dr. Ronald
W. Pero, Ph.D., the Company's Chief Scientific Officer, and two other employees,
the  Company  does not  directly  employ  any  scientists  or  other  laboratory
personnel and all of its preclinical tests and clinical trials are subcontracted
to and  performed  at the  University  of Lund,  Sweden and at other  centers in
Europe and the United  States,  with the  assistance of research and  consulting
firms.  Accordingly,  OXiGENE  has  depended,  and in the  future  is  likely to
continue to depend, on others for assistance in many areas,  including research,
conducting  preclinical  testing and clinical  trials,  the regulatory  approval
process,  manufacturing  and  marketing.  Although  the  Company  considers  its
relations  with  existing  collaborative  partners to be  satisfactory,  all its
current arrangements are short term in nature. Funding requirements, competitive
factors or  prioritization  of other  opportunities may lead the Company to seek
additional  arrangements with third parties.  While OXiGENE is likely to explore
license and development opportunities for its technologies with other companies,
there can be no assurance  that the Company will be successful  in  establishing
and maintaining  collaborative  agreements or licensing  arrangements;  that any
collaborative   partner  will  not  be  pursuing  alternative   technologies  or
developing  alternative  compounds  either on its own or in  collaboration  with
others,  directed at the same  diseases as those  involved in its  collaborative
arrangements with the Company; that any such collaborative  partners will devote
resources to the Company's technologies or compounds on a basis favorable to the
Company;  that any such arrangements  will be on terms favorable to OXiGENE;  or
that,   if   established,   such  future   licensees   will  be   successful  in
commercializing products.  Finally, if the Company's collaboration  arrangements
are  terminated  prior to  their  expiration  or if the  other  parties  to such
arrangements  fail  to  adequately  perform,  there  can  be no  assurance  that
submission of product  candidates for  regulatory  approval will not be delayed.
See "--Research and Development and Collaborative Arrangements."

     Clinical  Trials;  Government  Regulation  and Health Care Reform;  Managed
Care. The Company's research and development activities, preclinical testing and
clinical trials, and the manufacturing and marketing of its products are subject
to  extensive  regulation  by numerous  governmental  authorities  in the United
States  and   other  countries.   See  "--Product  Development  and   Regulatory
Processes."  Preclinical  testing  and  clinical  trials and  manufacturing  and
marketing  of  OXiGENE's  products  are and will  continue  to be subject to the
rigorous testing and approval processes of the FDA, the Swedish Medical Products
Agency and other corresponding foreign regulatory authorities.  Clinical testing
and the regulatory process generally take many years and require the expenditure
of substantial resources.  In addition,  delays or rejections may be encountered
during the period of product  development,  clinical  testing and FDA regulatory
review of each submitted application.  Similar delays may also be encountered in
foreign  countries.  There can be no  assurance  that,  even after such time and
expenditures, regulatory approval will be obtained for any products developed by
OXiGENE or that a product, if approved in one country, will be approved in other
countries.  See "--Product  Development and Regulatory  Processes." Moreover, if
regulatory  approval  of  a  product  is  granted,   such  approval  may  entail
limitations  on the  indicated  uses for which  that  product  may be  marketed.
Further,  even if such regulatory approval is obtained,  a marketed product, its
manufacturer  and its  manufacturing  facilities are subject to continual review
and periodic  inspections,  and later discovery of previously  unknown  problems
(such as previously  undiscovered side effects) with a product,  manufacturer or
facility may result in restrictions  on such product,  manufacturer or facility,
including  a possible  withdrawal  of the product  from the  market.  Failure to
comply with the  applicable  regulatory  requirements  can,  among other things,
result in fines, suspensions of regulatory approvals, product recalls, operating
restrictions,   injunctions  and  criminal  prosecution.  Additionally,  further
government regulation may be established which could prevent or delay regulatory
approval of the Company's  products.  Further,  the U.S.  Congress  continues to
debate  various  health  care reform  proposals  which,  if adopted,  may have a
material  adverse  effect  on the  Company.  Moreover,  continued  cost  control
initiatives by health care  maintenance  organizations  and similar programs may
affect the financial  ability and  willingness of patients and their health care
providers to utilize certain therapies.

     Competition and Risk of Technological Obsolescence.  The Company is engaged
in a rapidly evolving field.  Competition from other  pharmaceutical  companies,
biotechnology  companies and research and academic  institutions  is intense and
expected  to  increase.   Many  of  those   companies  and   institutions   have
substantially greater financial, technical and human resources than the Company.
Those companies and institutions also have  substantially  greater experience in
developing  products,  in conducting  clinical trials,  in obtaining  regulatory
approval  and  in   manufacturing   and   marketing   pharmaceutical   products.
Accordingly,  competitors may succeed in obtaining regulatory approval for their
products  more  rapidly  than  the  Company.  The  Company  also  competes  with
universities  and other research  institutions  in the  development of products,
technologies and processes.  Competitors have developed or are in the process of
developing  technologies  that  are,  or in the  future  may be,  the  basis for
competitive  products.  Some of those  products  may have an entirely  different
approach or means of accomplishing the desired  therapeutic effect than products
being developed by the Company. See  "--Competition."  There can be no assurance
that the Company's  competitors will not succeed in developing  technologies and
products  that are more  effective  and/or  cost  competitive  than those  being
developed  by the  Company or that would  render the  Company's  technology  and
products less  competitive  or even  obsolete.  In addition,  one or more of the
Company's competitors may achieve product commercialization or patent protection
earlier than the Company, which could materially adversely affect the Company.

     Dependence  on  Patents  and  Proprietary  Technology.  To date,  OXiGENE's
initial  products,  Sensamide(TM)  and  Neu-Sensamide(TM),  have  been  based on
certain available compounds that are produced by others. The Company anticipates
that products it develops hereafter may include or be based on the same or other
compounds  owned or  produced  by  unaffiliated  parties,  as well as  synthetic
compounds  it  may  discover.  Although  the  Company  expects  to  seek  patent
protection  for any  compounds  it  discovers  and/or for any  specific  uses it
discovers for new or previously known compounds,  there is no assurance that any
or all of them will be subject to  effective  patent  protection.  Further,  the
development  of  regimens  for  the  administration  of  pharmaceuticals,  which
generally  involve  specifications  for the  frequency,  timing  and  amount  of
dosages, has been, and the Company believes may continue to be, important to the
Company's efforts, although those processes, as such, may not be patentable.

     The  Company's  success  will  depend,  in part,  on its  ability to obtain
patents,  protect  its trade  secrets  and  operate  without  infringing  on the
proprietary  rights of others.  As of March 8, 1998, the Company is the assignee
of four granted U.S.  patents,  five pending U.S.  patent  applications,  and of
granted  patents  and/or  pending   applications  in  other  countries   (and/or
international  applications  designating other countries) corresponding to three
of the granted U.S.  patents and all five of the pending U.S.  applications.  In
addition,  the  Company  will  be  the  assignee  of a U.S.  provisional  patent
application filed in 1997, and of international and foreign counterparts thereof
expected  to be  filed  in 1998.  The  patent  position  of  pharmaceutical  and
biotechnology  firms like  OXiGENE  generally is highly  uncertain  and involves
complex legal and factual questions, resulting in both an apparent inconsistency
regarding the breadth of claims allowed in U.S. patents and general  uncertainty
as to their legal interpretation and enforceability.  Accordingly,  there can be
no assurance that the Company's patent applications will result in patents being
issued,  that any issued  patents  will  provide  the Company  with  competitive
protection or will not be  challenged  by others,  or that the patents of others
will not have an adverse  effect on the ability of the  Company to do  business.
Moreover,  since  some  of the  basic  research  relating  to one or more of the
Company's   patent   applications   and/or  patents  was  performed  at  various
universities  and/or funded by grants,  particularly in Sweden,  there can be no
assurance that one or more universities,  employees of such universities  and/or
grantors will not assert that they have certain  rights in such research and any
resulting products,  although the Company is not aware of any such assertions or
any basis therefor.  Furthermore, there can be no assurance that others will not
independently develop similar products,  will not duplicate any of the Company's
products or, if patents are issued to the Company,  will not design  around such
patents. In addition,  the Company may be required to obtain licenses to patents
or other  proprietary  rights of  others.  No  assurance  can be given  that any
licenses  required  under any such patents or  proprietary  rights would be made
available on terms acceptable to the Company, if at all. If the Company does not
obtain such licenses,  it could encounter delays in product market introductions
while it  attempts  to  design  around  such  patents,  or could  find  that the
development,  manufacture  or  sale  of  products  requiring  such  licenses  is
foreclosed.  In addition, the Company could incur substantial costs in defending
itself in suits  brought  against it or in  connection  with patents to which it
holds a license or in bringing suit to protect the Company's own patents against
infringement.  The Company generally  requires  employees,  Scientific  Advisory
Board members and the  institutions  that perform its  preclinical  and clinical
tests   (though  not  the  employees  of  such   institutions)   to  enter  into
confidentiality  agreements with the Company.  Those agreements provide that all
confidential  information  developed or made known to the individual  during the
course of the relationship  with the Company is to be kept  confidential and not
to be disclosed to third parties, except in specific circumstances.  In the case
of employees,  the agreements also provide that all inventions conceived by such
employees  shall be the  exclusive  property  of the  Company.  There  can be no
assurance,  however,  that any such agreement will provide meaningful protection
for the Company's trade secrets or other  confidential  information in the event
of unauthorized use or disclosure of such information.  See "--Patents and Trade
Secrets."

     Dependence  on Certain  Officers  and  Directors  and  Others.  The Company
believes  that its  success  is,  and will  likely  continue  to be,  materially
dependent  upon its  ability to retain the  services  of certain of its  current
officers and directors,  particularly Dr. Bjorn Nordenvall,  its Chief Executive
Officer,  Dr. Claus Moller, its Chief Medical Officer,  and Dr. Ronald Pero, its
Chief Scientific  Officer.  The loss of the services of any of these individuals
could have a material  adverse effect on the Company.  In addition,  the Company
has  established   relationships  with  universities,   hospitals  and  research
institutions,  particularly  the University of Lund,  Lund,  Sweden,  which have
historically  provided,  and  continue  to provide,  the Company  with access to
research laboratories,  clinical trials,  facilities and patients. Dr. Pero is a
Professor  of  Molecular  Ecogenetics  at the  University  of Lund.  The Company
benefits  indirectly  from certain  research  grants  received by Dr. Pero.  The
Company is materially  dependent on the research and development  efforts of Dr.
Pero and his various  relationships  and  affiliations,  the loss of which could
have a material  adverse  effect on the Company's  business.  Additionally,  the
Company  believes  that it may, at any time and from time to time, be materially
dependent on the services of consultants and other unaffiliated third parties.

     Product  Liability  Exposure;  Limited Insurance  Coverage.  The use of the
Company's products in clinical trials and for commercial  applications,  if any,
may expose the Company to liability  claims,  in the event such  products  cause
injury,  disease  or result  in  adverse  effects.  These  claims  could be made
directly by health care institutions,  contract laboratories, patients or others
using such  products.  Although  the Company has  obtained  liability  insurance
coverage for its ongoing  clinical  trials,  and there can be no assurance  that
such  coverage  will be in amounts  sufficient  to protect the  Company  against
claims or recalls  that could have a material  adverse  effect on the  financial
condition and  prospects of the Company.  Further,  adverse  product and similar
liability  claims could  negatively  impact the  Company's  ability to obtain or
maintain regulatory approvals for its technology and products.

     Price  Volatility of the Common Stock. The market price of the Common Stock
has been,  and likely will continue to be, highly  volatile as frequently is the
case  with  the  publicly-traded   securities  of  pharmaceutical  research  and
development  companies.  See "Market For Registrant's  Common Equity and Related
Stockholder Matters." Factors such as results of clinical trials,  announcements
of  research  developments  and results by the  Company or its  competitors  and
government regulatory action affecting the Company's products in both the United
States and foreign  countries  have had, and may continue to have, a significant
effect on the Company's business and on the market price of the Common Stock. As
of December 31, 1997, an aggregate of 49,612 Stock appreciation rights ("SARs"),
with a weighted  average  exercise  price of $7.19 per SAR,  had been granted to
certain clinical  investigators and consultants.  The Company is not required to
make any cash  payments  upon  exercise  of any such SAR. If and when the spread
between the market price of the Company's Common Stock and the exercise price of
the SARs changes,  the charge for financial  reporting  purposes to research and
development will be adjusted to reflect an increase or decrease, as the case may
be,  in the  market  price of the  Company's  Common  Stock.  See  "Management's
Discussion and Analysis of Financial  Condition and Results of  Operations."  In
addition, substantially all of the shares of Common Stock issuable upon exercise
of outstanding  options,  SARs and warrants have been registered and may be sold
from time to time hereafter. Such sales, as well as future sales of Common Stock
by  existing  stockholders,  or the  perception  that sales could  occur,  could
adversely  affect the market price of the Common Stock.  The price and liquidity
of the Common Stock may also be  significantly  affected by trading activity and
market factors related to the Nasdaq and Stockholm Stock Exchange markets, which
factors and the effects thereof may differ between those markets.

     No Dividends.  The Company has not declared or paid dividends on its Common
Stock since its inception and does not intend to declare or pay any dividends to
its stockholders in the foreseeable  future. See "Market For Registrant's Common
Equity and Related Stockholder Matters."

<PAGE>


                             GLOSSARY OF SCIENTIFIC TERMS

Anti-emetic                  A drug which controls nausea and vomiting

Apoptosis                    A natural programmed cell death not  involving cell
                             replication

CD4 cell counts              A sub-set of white blood cells directly involved in
                             the natural protection against diseases

CGMP standards               Current  good   manufacturing  practice   standards
                             required for regulatory affairs

Chemotherapy                 Drugs that control cancer growth

Cisplatin                    A chemotherapeutic compound

Control group                A group of  patients involved  in  a clinical trial
                             who are receiving placebos

Cross-over study             A  study  in   which  each   patient  receives  all
                             treatments  singly,  but  at different times of the
                             study

Cytotoxic agent              Tumor-killing agent

DNA                          Chemical building blocks of genetic material

Double-blind study           A  study  in  which   neither   the   investigators
                             assessing the outcome of the trial nor the patients
                             know  whether  the  patient is  receiving  the drug
                             being investigated or merely a placebo. The outcome
                             can only be determined when the results are decoded

Enzyme                       A protein that carries out a metabolic  function by
                             converting one substance to another

Genetic blueprint            The code  that  tells  cells  what to do and how to
                             function

Genetic lesions              Damage to the DNA or in the genetic blueprint

i.m.                         Intramuscular

Immune deficiencies          Suppression  of the cells that fight disease within
                             the body

IND                          An  "Investigational  New Drug"  application
                             filed   with   the   U.S.   Food   and  Drug
                             Administration      that     permits     the
                             administration  of  compounds  to  humans in
                             clinical trials

In vivo-exposed spleen       Spleen  cells are  exposed in the animal then taken
and cell                     out for testing

i.v.                         Intravenous

Malignant cell               Cancer cell

Metabolic function           Living process of growth and reproduction

NDA                          A "New Drug Application" filed with the U.S.
                             Food  and  Drug  Administration,  which,  if
                             approved,  allows a drug to be  marketed  in
                             the U.S.

Necrosis                     Cell death by decomposition after replication

N-substituted benzamide      Class of drugs  believed  by OXiGENE  to  sensitize
                             radiation and chemotherapy

Nucleotides                  A  class of nucleic acid compounds from which genes
                             are constructed

Open-label clinical trial    A non-blinded clinical trial

Oxidative stress             Undesired  natural   metabolism  of  oxygen-derived
                             molecules by the body that can induce DNA damage

PARP                         Poly (ADP Ribose) Polymerase--an enzyme involved in
                             the DNA repair  process.  Also  known as  Adenosine
                             Diphosphate Ribosyl Transferase or ADPRT

Placebo                      A non-active  substance given to a control group of
                             patients  in a  clinical  trial  to  duplicate  the
                             treatment method, but without the administration of
                             the active drug under investigation

Radiation                    Physical  energy that splits  molecules and induces
                             DNA damage

Randomized clinical trial    A  clinical   trial  in  which  the  allocation  of
                             patients to  treatment  groups is  made on a random
                             basis

Sensitization                The process that  renders a tumor more  susceptible
                             to damage by radiation or chemotherapy

Serum thiol level            The  level  of  compounds  in serum that react with
                             oxidative stress

<PAGE>


2.   PROPERTIES.

     In conjunction  with the set-up of a laboratory  facility at Boston Medical
Center,  and in order to monitor the  recently-commenced  clinical trials in the
United States the Company closed its office in New York, New York, and relocated
its executive  offices to Boston,  Massachusetts.  The Boston office lease has a
current annual rent of approximately  $63,000 and expires on April 30, 2002, but
may be terminated at any time by the Company upon six months' written notice and
payment of a  cancellation  fee.  In  connection  with the listing of its Common
Stock on the Stockholm Stock Exchange, the Company opened an executive office in
Stockholm,  Sweden.  The  Stockholm  office  is  leased  at an  annual  rate  of
approximately  $41,000, and the lease expires on September 30, 2000. The Company
also  leases an office at the Ideon  Research  Park in Lund,  Sweden.  The lease
expires on March 31, 2000,  and the annual rent is  approximately  $42,000.  The
Company does not own or lease any laboratories or other research and development
facilities.


3.   LEGAL PROCEEDINGS.

     There  are no  material  suits or  claims  pending  or,  to the best of the
Company's knowledge, threatened against the Company.


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

     No matter was  submitted  to the vote of  security  holders of the  Company
during the fourth quarter of the year ended December 31, 1997.

Executive Officers of the Company

     The executive  officers of the Company and their ages at December 31, 1997,
were as follows:

Name                             Age     Position
- ----                             ---     --------
Bjorn Nordenvall, M.D., Ph.D..   45      Chief Executive Officer, President and
                                         Chairman of the Board of Directors

Claus Moller, M.D., Ph.D......   35      Chief Medical Officer and a Director

Ronald W. Pero, Ph.D..........   57      Chief Scientific Officer and a Director

Bo Haglund....................   45      Chief Financial Officer

     Bjorn  Nordenvall,  M.D.,  Ph.D. was appointed as a Director in March 1995,
and became the Company's  President and Chief Executive Officer in June 1995 and
Chairman of the Board of Directors in June 1996.  From March to August 1996, Dr.
Nordenvall  served as the Company's  Chief  Financial  Officer.  Dr.  Nordenvall
serves as  Chairman  of the  Company's  Audit  Committee.  Dr.  Nordenvall  is a
specialist in general surgery and, from 1987 to September 1996, was president of
Sophiahemmet  AB,  a  Stockholm-based   hospital.  During  1983  and  1984,  Dr.
Nordenvall  was  president  of  Carnegie  Medicine  AB,  Stockholm,   Sweden,  a
biotechnology  company,  and from 1977 through  1985,  he  practiced  surgery at
Danderyd Hospital, Stockholm. From 1984 through 1986, Dr. Nordenvall served as a
consultant to Carnegie,  a Swedish investment banking company,  and, since 1984,
he has been a  consultant  to Skandia  Insurance  Company,  a Swedish  insurance
company.

     Claus  Moller,  M.D.,  Ph.D.  was appointed as a Director in March 1995 and
became the Company's Chief Medical  Officer in March 1995.  Since April 1, 1994,
Dr.  Moller  has  served  as  a  consultant  to  the  Company,  responsible  for
coordinating the Company's  European  clinical trials.  Dr. Moller is a director
and  a  principal  shareholder  of  IPC  Nordic  A/S,  a  Danish  pharmaceutical
consulting  firm.  From  1989 to 1994,  Dr.  Moller  was  medical  director  for
Synthelabo  Scandinavia A/S, a Danish  pharmaceutical  company, and from 1983 to
1992, he was involved in cell biology and biomedical  research at the University
of Copenhagen, Denmark.

     Ronald W. Pero,  Ph.D. is a co-founder of OXiGENE,  and has been a Director
and the Company's Chief  Scientific  Officer since its inception.  From November
1993 to June 1995,  Dr. Pero also served as President  of the Company.  Dr. Pero
specializes in the field of DNA repair and its relation to cancer treatment, and
directs and coordinates the Company's research and development efforts. Dr. Pero
has been a fellow of the National Institute of Environmental  Health Sciences in
Research  Triangle  Park,  North  Carolina,   a  director  of  the  Division  of
Biochemical  Epidemiology  at the Strang  Cancer  Prevention  Center in New York
City, and currently holds faculty positions at both New York University  Medical
Center and the  University of Lund in Lund,  Sweden,  where he is a Professor of
Molecular Ecogenetics.  Dr. Pero is also a member of the American Association of
Science,  New  York  Academy  of  Sciences,  International  Preventive  Oncology
Society,  European Society for Therapeutic  Radiation  Oncology and The American
Association of Cancer Research, as well as serving as Scientific Director of the
Board of Trustees  of the Swedish  American  Research  Foundation.  Dr. Pero has
published more than 175 manuscripts related to his research.

     Bo Haglund was  appointed  Chief  Financial  Officer in August  1996.  From
January  1992 to August  1996,  Mr.  Haglund  was  employed  by D.  Carnegie  AB
("Carnegie") in various capacities, most recently heading its London operations,
focusing on the  marketing  of Nordic  securities  to U.K.  investors.  Prior to
joining Carnegie,  from November 1990 to January 1992, Mr. Haglund was executive
vice president and chief financial officer of Swedish Exploration Consortium AB,
a Swedish  publicly-traded  company  engaged  in oil and gas  exploration.  From
January 1988 to October 1990,  Mr.  Haglund was vice  president  finance of Cool
Carriers AB, a shipping  company,  and from April 1982 to December  1987, he was
chief financial officer of Gulf Agency Group, a ship brokerage company.



                                     PART II


5.   MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.

     Effective  November  19,  1996,  the  Company's  Common  Stock and Warrants
commenced  trading on the Nasdaq  National  Market under the symbols  "OXGN" and
"OXGNW,"  respectively.  Prior  thereto,  since the  completion of the Company's
initial public offering in August 1993, the Company's securities had been listed
for quotation on the Nasdaq  Small-Cap  Market.  The Company's  shares of Common
Stock are also traded on the Stockholm  Stock Exchange in Sweden.  The following
table  sets  forth  the high and low per share and per  warrant  prices  for the
Company's  Common Stock and Warrants for each  quarterly  period  within the two
most recent fiscal years.

                           Common Stock                         Warrants
                           ------------                         ---------

Calendar Year            High         Low                 High            Low
- -------------            ----         ---                 ----            ---

1996
First Quarter           $23.38       $ 9.25              $15.50         $ 2.88
Second Quarter           32.63        17.63               24.00          10.25
Third Quarter            27.00        17.00               18.00           8.63
Fourth Quarter           26.70        22.00               15.50          11.00

1997
First Quarter           $36.25       $22.63              $26.25         $12.25
Second Quarter           35.00        26.25               25.25          15.56
Third Quarter            41.88        24.00               29.25          15.25
Fourth Quarter           29.25        15.25               18.50           6.50



     As of March 24,  1998,  there were 34  holders  of record of the  Company's
Common Stock and two holders of record of the  Company's  Warrants.  The Company
believes,  based  on the  number  of  proxy  statements  and  related  materials
distributed  in connection  with its 1997 Annual Meeting of  Stockholders,  that
there are more than 5,000 beneficial owners of its Common Stock.

     The Company has not declared  any cash  dividends on its Common Stock since
its  inception  in 1988,  and  does not  intend  to pay  cash  dividends  in the
foreseeable future. The Company presently intends to retain future earnings,  if
any, to finance the growth and development of its business.

<PAGE>
6.   SELECTED FINANCIAL DATA.

                          Summary Financial Information
                                  OXiGENE, Inc.
                          (A development stage company)

<TABLE>
<CAPTION>

                                               1993                 1994             1995                 1996                 1997
                                    ------------------------------------------------------------------------------------------------
<S>                                       <C>                  <C>               <C>                <C>                 <C> 

Statement of Operations Data:

Revenues:
  Research income                                 -                    -                -                    -                    -
  Interest income                            50,897              265,440          420,949              684,039            2,217,467
                                    ------------------------------------------------------------------------------------------------
    Total revenues                           50,897              265,440          420,949              684,039            2,217,467

Operating Expenses:
  Research and development                  879,195            1,764,462        2,843,593            4,822,834            7,281,504
  General and administrative              1,191,714            1,340,737        1,295,191            1,819,638            3,046,484
                                    ------------------------------------------------------------------------------------------------
    Total operating expenses              2,070,909            3,105,199        4,138,784            6,642,472           10,327,988
                                    ------------------------------------------------------------------------------------------------

Net loss                                (2,020,012)          (2,839,759)      (3,717,835)          (5,958,433)          (8,110,521)
                                    ================================================================================================

Net loss per common share                    (0.50)               (0.56)           (0.63)               (0.80)               (0.83)

Weighted average number of
  common shares outstanding
  (in thousands)                              4,026                5,037            5,876                7,440                9,770



                                               1993                 1994             1995                 1996                 1997
                                    ------------------------------------------------------------------------------------------------

Balance Sheet Data:

Cash and cash equivalents                 7,516,941            1,193,999       10,406,605           40,517,182           40,136,662
Securities available for sale                     0            3,291,128          502,020                    0                    0
Working capital                           7,207,265            4,447,080       10,510,024           40,418,846           39,889,394
Total assets                              7,550,838            4,770,951       11,227,251           41,168,759           41,152,357
Total liabilities                           309,970              290,969          670,077              650,001              951,088
Deficit accumulated during
  the development stage                 (4,842,280)          (7,682,039)     (11,399,874)         (17,358,307)         (25,468,828)
Total stockholders' equity                7,240,866            4,479,982       10,557,174           40,518,758           40,201,269
</TABLE>


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

Overview

     OXiGENE  is a  development-stage  pharmaceutical  company  engaged  in  the
research and development of products  designed to enhance the clinical  efficacy
of  radiation  and  chemotherapy,  the  most  common  and  traditional  forms of
non-surgical  cancer  treatment.  OXiGENE has devoted  substantially  all of its
efforts and  resources to research and  development  conducted on its own behalf
and  through  strategic  collaborations  with  clinical  institutions  and other
organizations,   particularly   the   University   of  Lund  in  Lund,   Sweden.
Consequently,  OXiGENE  believes that its research and development  expenditures
have  been  somewhat  lower  than  those of other  comparable  development-stage
companies.  OXiGENE has generated a cumulative net loss of  approximately  $25.5
million for the period from its inception through December 31, 1997.

     OXiGENE expects to incur  significant  additional  operating losses over at
least the next several years, principally as a result of its continuing clinical
trials and  anticipated  research and  development  expenditures.  The principal
source of OXiGENE's  working capital has been the proceeds of private and public
equity  financings.  As of December 31, 1997,  OXiGENE had no long-term  debt or
loans payable.  Since its inception,  the Company has had no material  amount of
licensing or other fee income,  and does not  anticipate any such income for the
foreseeable future.


Results of Operations

     Year Ended  December  31, 1997  Compared to Year Ended  December  31, 1996.
During the years ended  December 31, 1997 and 1996, the Company had no revenues,
except for  approximately  $2.2  million and $0.7  million of  interest  income,
respectively.  The increase in interest income is attributable to the investment
of the net proceeds of the Company's  secondary  offering in connection with its
listing on the Stockholm Stock Exchange ("SSE"), which was completed in November
1996, as well as cash received upon exercise of options and warrants  throughout
the year. See "Liquidity and Capital  Resources."  The Company's total operating
expenses for the year ended December 31, 1997 increased to  approximately  $10.3
million from approximately $6.6 million for the comparable 1996 period. Research
and  development  expenses for those years were  approximately  $7.3 million and
$4.8 million,  respectively.  Research and development expenditures are net of a
credit for financial reporting purposes of approximately $0.2 million related to
stock  appreciation  rights  ("SARs")  previously  granted to  certain  clinical
investigators.  Research and development expenditures for 1996 included a charge
for financial  reporting  purposes of approximately $1.0 million with respect to
such SARs. This charge was recorded because the market value per share of Common
Stock on  December  31,  1997  ($17.50)  exceeded  the  exercise  price of stock
appreciation  rights  previously  granted by the  Company  to  certain  clinical
investigators  and consultants.  Without giving effect to such charge,  research
and development expenses increased by approximately $3.7 million compared to the
comparable 1996 period.  The increase is primarily  attributable to research and
development  expenditures  related to the Company's third generation  sensitizer
OXi-104,  Cordycepin,  Combretastatin  and its ongoing  clinical  trial program.
Generally,  the Company makes payments to its clinical investigators if and when
certain predetermined milestones in its clinical trials are reached, rather than
on a fixed  quarterly or monthly  basis.  As a result of the  foregoing  and the
existence of outstanding  stock  appreciation  rights,  research and development
expenses have fluctuated,  and are expected to continue to fluctuate,  from year
to year.  General and  administrative  expenses for the year ended  December 31,
1997 increased to approximately $3.0 million from approximately $1.8 million for
the comparable 1996 period. The increase in general and administrative  expenses
is primarily  attributable  to: (i) the  Company's  participation  in scientific
symposium,  particularly the ECCO conference held in September 1997, in Hamburg,
Germany,   where  the  Company  released  the  first  preliminary  data  of  its
Sensamide(TM) study in patients with NSCLC, and other promotion activities, (ii)
establishing  a  clinical  trial and  research  coordination  center in  Boston,
Massachusetts,  and (iii) an increase in the number of staff required to monitor
the  Company's  clinical  trials,  and a general  increase in expenses  due to a
higher level of business  activities.  In an effort to preserve  cash and reduce
cash flow requirements,  the Company's policy has been to minimize the number of
employees  and to use outside  consultants  to the extent  practicable.  OXiGENE
expects that its clinical  trial  expenses will increase as it proceeds with and
expands the  Neu-Sensamide(TM)  clinical trial program and it initiates research
and clinical  trials on new compounds,  including  OXi-104,  Combretastatin  and
Cordycepin.

     Year Ended  December  31, 1996  Compared to Year Ended  December  31, 1995.
OXiGENE had no revenues,  except for approximately $0.7 million and $0.4 million
of interest income in the years ended December 31, 1996 and 1995,  respectively.
The increase in interest  income is  attributable  to the  investment of the net
proceeds of the Company's  secondary  offering in connection with its listing on
the Stockholm Stock Exchange  ("SSE"),  which was completed in November 1996, as
well as cash received upon exercise of options and warrants throughout the year.
Total  operating  expenses  for the year ended  December  31, 1996  increased to
approximately  $6.6 million from  approximately  $4.1 million for the comparable
1995 period.  Research and development  expenses for the year ended December 31,
1996 increased to approximately  $4.8 from approximately $2.8 for the comparable
1995 period. General and administrative expenses for the year ended December 31,
1996 increased to approximately  $1.8 from approximately $1.3 for the comparable
1995  period.  The increase in  operating  expenses is primarily  due to (i) the
costs and expenses  associated  with an expansion of the clinical trial program,
(ii)  increases  in research  and  development  activities  in  connection  with
OXiGENE's new compounds,  (iii)  investment  banking fees paid to D. Carnegie AB
("Carnegie"),  and (iv)  expenses  related to the  establishing  of an office in
Stockholm.  The  increase  in  research  and  development  expenses  was  partly
attributable  to an increase in the charge for financial  reporting  purposes of
approximately  $1.0  million  related  to SARs  previously  granted  to  certain
clinical investigators.


Liquidity and Capital Resources

     OXiGENE has  experienced  net losses and negative cash flow from operations
each year since its inception  and, as of December 31, 1997,  has an accumulated
deficit of approximately $25.5 million. The Company expects to incur substantial
additional  expenses,  resulting in significant  losses,  over at least the next
several years due to, among other factors,  its continuing  clinical  trials and
anticipated  research  and  development  activities.  To date,  the  Company has
financed  its  operations  principally  through the net proceeds it has received
from private and public equity financings,  and from the exercise of outstanding
options and warrants.

     OXiGENE had cash and cash  equivalents of  approximately  $40.1 million and
$40.5  million at December 31, 1997 and December  31, 1996,  respectively.  This
relatively  small decrease in cash and cash equivalents is due to the receipt by
OXiGENE of approximately  $7.9 million from the exercise of outstanding  options
and warrants  during the year ended  December 31, 1997,  which almost offset the
net cash used in operating activities during that year.

     OXiGENE's  policy is to contain its fixed  expenditures  by  maintaining  a
relatively  small number of employees and relying as much as possible on outside
services for its research, development, preclinical testing and clinical trials.
Quarterly  payments are being made to the University of Lund, Lund,  Sweden, for
preclinical research and clinical trials. For the years ended December 31, 1997,
1996, and 1995, the amount of such retainer was approximately $1.0 million, $0.3
million,  and $0.2 million,  respectively.  In late 1991,  OXiGENE  engaged Cato
Research,  Ltd., an independent clinical research firm in Durham, North Carolina
("Cato"),  to, among other things, monitor OXiGENE's clinical trials. The amount
billed to OXiGENE by Cato during the years ended  December 31, 1997,  1996,  and
1995  was  approximately   $0.2  million,   $0.3  million,   and  $0.7  million,
respectively. The continuous decrease in the amount billed by Cato prior to 1997
is due to the  completion  of the  Company's  Phase  II/III  clinical  trial  of
Sensamide(TM). In May 1996, OXiGENE in collaboration with ILEX(TM) Oncology Inc.
("ILEX"), a contract research organization in San Antonio, Texas,  established a
large-scale  synthesis  of OXi-104 in  accordance  with FDA  current  U.S.  Good
Laboratory Practice standards ("cGLP").  In the year ended December 31, 1997 and
1996, the Company paid ILEX approximately  $1.6 and $0.9 million,  respectively.
The increase in the amounts paid to ILEX  reflects the research and  development
with  respect to OXi-104  and  Combretastatin,  a compound  that in  preclinical
studies indicates  toxicity toward tumor  vasculature.  The Company expects that
the amounts payable to ILEX will increase from time to time.

     OXiGENE  anticipates  that the cash and cash  equivalents  at December  31,
1997,  and income it will earn  thereon  should be  sufficient  to  satisfy  the
Company's projected cash requirements for approximately the next 30 months.

     However,  working capital and capital requirements may vary materially from
those now  planned due to numerous  factors  including,  but not limited to, the
progress with preclinical testing and clinical trials; progress of the Company's
research  and  development  programs;  the time and  costs  required  to  obtain
regulatory approvals; the resources the Company devotes to manufacturing methods
and advanced technologies; the ability of the Company to obtain collaborative or
licensing  arrangements;  the cost of filing,  prosecuting,  and, if  necessary,
enforcing  patent  claims;   the  cost  of   commercialization   activities  and
arrangements;  and the demand for its products if and when approved. The Company
anticipates that it might have to seek substantial  additional private or public
financing  or enter  into a  collaborative  arrangement  with one or more  third
parties to complete the  development of any product or bring products to market.
There  can be no  assurance  that  additional  financing  will be  available  on
acceptable terms, if at all.

     OXiGENE had no material commitments for capital expenditures as of December
31, 1997.

Impact of Year 2000

     The Company has  completed a  preliminary  assessment  to  determine if its
computer  system will  function  properly with respect to dates in the year 2000
and thereafter.  Based on that assessment the Company believes that its computer
systems are year 2000 compliant.


8.   FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

     See Item 14 for a list of the OXiGENE  Financial  Statements  and Schedules
and Supplementary Information filed as part of this report.


9.   CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
     FINANCIAL DISCLOSURE.

     None.



<PAGE>
                                    PART III


10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

     The information  required by this Item, insofar as it relates to directors,
is incorporated herein by reference to the Company's  definitive Proxy Statement
with respect to the Company's  Annual  Meeting of  Stockholders  scheduled to be
held on June 5, 1998. The information  regarding  executive officers is included
in Part I hereof under the caption  "Executive  Officers of the Company," and is
incorporated by reference into this Item 10.

11.  EXECUTIVE COMPENSATION.

     The information  required by this Item is incorporated  herein by reference
to the Company's definitive Proxy Statement with respect to the Company's Annual
Meeting of Stockholders scheduled to be held on June 5, 1998.

12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.

     The information  required by this Item is incorporated  herein by reference
to the Company's definitive Proxy Statement with respect to the Company's Annual
Meeting of Stockholders scheduled to be held on June 5, 1998.

13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

     The information  required by this Item is incorporated  herein by reference
to the Company's definitive Proxy Statement with respect to the Company's Annual
Meeting of Stockholders scheduled to be held on June 5, 1998.



<PAGE>

                                     PART IV


14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K.

(a)      Documents Filed with this Report.

         The following documents are filed as part of this report.

         1.       Financial Statements

                  The financial  statements  listed in the accompanying  List of
                  Financial   Statements   covered  by  Report  of   Independent
                  Auditors.

         2.       Financial Statement Schedules

                  None.

         3.       Exhibits


         Exhibit
         Number          Description
         --------        -----------

         3.1             Restated    Certificate   of   Incorporation   of   the
                         Registrant.*

         3.2             By-Laws of the Registrant.*

         3.3             Certificate    of   Amendment   of    Certificate    of
                         Incorporation.***

         4.1             Representatives'  Warrant Agreement  (including form of
                         Representatives' Warrant Certificate), dated August 26,
                         1993, between the Company and RAS Securities Corp.*

         4.2             Warrant   Agreement    (including   form   of   Warrant
                         Certificate),   dated  August  26,  1993,  between  the
                         Company and America Stock Transfer & Trust Company.*

         10.1            Patent  License  Agreement  dated as of October 7, 1991
                         between  Preventive  Medicine Institute and Bio-Screen,
                         Inc.*

         10.2            Amended and Restated Stock Incentive Plan of Registrant
                         dated as of May 15, 1993.*

         10.3            Employment  Agreement,  dated  as  of  April  4,  1997,
                         between Registrant and Dr. Ronald W. Pero.

         10.4            Executive Employment Agreement,  dated as of October 9,
                         1993,  between  Registrant and Bjorn Nordenvall,  M.D.,
                         Ph.D.**

         10.5            Consulting  Agreement,  dated as of  October  9,  1995,
                         between OXiGENE  (Europe) AB and B. Omentum  Consulting
                         AB.**

         10.6            Consulting  Agreement,  dated  as of  August  1,  1995,
                         between Registrant and IPC Nordic A/S.**

         10.7            OXiGENE 1996 Stock Incentive Plan.***

         10.8            Collaborative Research Agreement, dated as of August 1,
                         1997,  between the Registrant and Boston Medical Center
                         Corporation.

         10.9             Technology Development Agreement,  dated as of May 27,
                          1997,  between the Registrant and the Arizona Board of
                          Regents,  acting  for and on behalf of  Arizona  State
                          University. Portions of this Exhibit have been omitted
                          pursuant to a request for Confidential Treatment filed
                          with the Commission  simultaneously with the filing of
                          this Annual Report.

         10.10           Office  Lease,   dated   February  26,  1997,   between
                         Registrant   and  Copley   Place   Associates   Nominee
                         Corporation.

         10.11           Employment  Agreement,  dated  as  of  April  4,  1997,
                         between Registrant and Dr. Claus Moller.

         23              Consent of Ernst & Young, LLP.

         27              Financial Data Schedule.

         99.1            U.S.  Patent Number  5,204,241,  issued April 20, 1994,
                         registered    to    Ronald    W.    Pero,     regarding
                         glutathione-s-transferase  Mu  as  a  measure  of  drug
                         resistance. ***

         99.2            U.S. Patent Number  5,340,565,  issued August 23, 1994,
                         registered to Ronald W. Pero, regarding tumor or cancer
                         cell killing therapy and agents useful therefor. ***

         99.3            U.S. Patent Number  5,482,833,  issued January 9, 1996,
                         registered  to  Ronald W.  Pero and  Daniel G.  Miller,
                         regarding a test to  determine  the  predisposition  or
                         susceptibility to DNA-associated diseases. ***

         99.4            International  Application  Published  under the Patent
                         Cooperation Treaty (PCT) Number  WO96/14565,  published
                         May 17, 1996, registered to Ronald W. Pero, regarding a
                         method of testing immune competency. ***

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

         *               Incorporated   by   reference   to   the   Registrant's
                         Registration  Statement on Form S-1 (file no. 33-64968)
                         and any amendments thereto.

         **              Incorporated  by reference to the  Registrant's  Annual
                         Report on Form 10-K for the fiscal year ended  December
                         31, 1994.

         ***             Incorporated   by   reference   to   the   Registrant's
                         Registration Statement on Form S-3 (file no. 333-12867)
                         and any amendments thereto.


(b)      Reports on Form 8-K.

         The  registrant  filed no reports on Form 8-K during the fourth quarter
         of the year ended December 31, 1997.



<PAGE>



                                   SIGNATURES

     Pursuant  to the  requirements  of  Section  13 or 15(d) of the  Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                             OXiGENE, INC.


                                             By:/S/ BJORN NORDENVALL
                                                      Bjorn Nordenvall
                                                      President and 
                                                        Chief Executive Officer
                                                      April 14, 1998

     Pursuant to the  requirements of the Securities  Exchange Act of 1934, this
report has been signed by the following  persons on behalf of the registrant and
in the capacities and on the dates indicated.

<TABLE>
<CAPTION>

         Signature                                  Title                                      Date
         ---------                                  -----                                      ----
<S>                                  <C>                                               <C>

/S/ BJORN NORDENVALL                  President, Chief Executive Officer               April 14, 1998
- ---------------------------           and Director (principal executive  
Bjorn Nordenvall                                    officer)
                                                   officer)

/S/ BO HAGLUND                             Chief Financial Officer                     April 14, 1998
- ---------------------------
Bo Haglund


/s/ MARVIN H. CARUTHERS                            Director                             April 14, 1998
- ---------------------------
Marvin H. Caruthers


                                                   Director                            April   , 1998
- ---------------------------
Michael Ionata


/S/ CLAUS MOLLER                                   Director                            April 14, 1998
- ---------------------------
Claus Moller


/S/ RONALD W. PERO                                 Director                            April 14, 1998
- ---------------------------
Ronald W. Pero


/S/ PER-OLOF SODERBERG                             Director                            April 14, 1998
- ---------------------------
Per-Olof Soderberg


/S/ GERALD A. EPPNER                               Director                            April 14, 1998
- ---------------------------
Gerald A. Eppner
</TABLE>


                              EMPLOYMENT AGREEMENT

     This Employment  Agreement (the "Agreement") is entered into as of April 1,
1997, between OXiGENE Inc., a Delaware corporation  ("OXiGENE"),  and Dr. Ronald
W. Pero (the  "Executive").  OXiGENE together with its subsidiary OXiGENE Europe
AB shall be referred to as the "Company."

                              W I T N E S S E T H:

     WHEREAS,  Executive  is  currently  employed by OXiGENE in the  capacity of
Executive Vice President, Scientific Affairs; and

     WHEREAS,  OXiGENE and Executive desire to enter into an agreement  relating
to the continued  employment of the Executive by OXiGENE for a four-year  period
ending April 1, 2001.

     NOW,  THEREFORE,  for good and  valuable  consideration,  the  receipt  and
sufficiency  of which are hereby  mutually  acknowledged,  OXiGENE and Executive
hereby agree as follows:

     1. Employment

     1.1  Executive  shall  continue to serve in the capacity of Executive  Vice
President,   Scientific   Affairs  of  OXiGENE,   and  shall  have  the  duties,
responsibilities  and authority  assigned to Executive by the Board of Directors
of OXiGENE,  ("Board") consistent with such position including,  but not limited
to:

     (a) all scientific matter, including "in-house" research,  contract and GLP
pre-clinical  research,  the  chemical  aspects  of GMP  manufacturing  and  the
adaptation and  development of  pre-clinical  procedures  and  discoveries  into
clinical material; and

     (b) all matters related to OXiGENE's  Scientific Advisory Board,  including
membership,  meeting schedules and agenda,  coordination of scientific projects,
public  relations  and  publications  and,  subject  to  Compensation  Committee
approval, compensation of the members of the Scientific Advisory Board.

Executive  shall report  directly to  OXiGENE's  President  and Chief  Executive
Officer.

     1.2 Executive,  so long as he is employed  hereunder,  (i) shall devote his
full  professional  time and  attention  to the  services  required of him as an
employee of  OXiGENE,  except as  otherwise  agreed and except as  permitted  in
accordance  with paid  vacation  time  subject to  OXiGENE's  existing  vacation
policy,  and subject to OXiGENE's  existing  policies  pertaining  to reasonable
periods of absence due to sickness,  personal injury or other  disability,  (ii)
shall use his best efforts to promote the interests of OXiGENE,  and (iii) shall
discharge his  responsibilities  in a diligent and faithful  manner,  consistent
with sound business  practices.  Notwithstanding  the  foregoing,  Executive may
serve as a director of, and a  consultant  to,  Campamed,  Inc.,  provided  such
activity does not interfere with  Executive's  ability to perform his duties and
responsibilities hereunder.

     2. Term

     The term of Executive's  employment  under this Agreement shall commence as
of April 1,  1997,  and shall end April 1,  2001,  unless  terminated  sooner as
hereinafter provided (the "Employment Term").

     3. Base Salary; Stock Options

     3.1 During the  Employment  Term,  Executive  shall  receive an annual base
salary in an annual amount equal to $240,000 (such amount as adjusted, from time
to time, the "Base Salary").  Executive's  salary shall be reviewed  annually by
the Board. Executive and OXiGENE acknowledge that Executive has elected to defer
$180,000 of Executive's  Base Salary  pursuant to a deferred  compensation  plan
maintained by OXiGENE.  The balance of Executive's  Base Salary shall be payable
in equal installments no less frequently than monthly by OXiGENE Europe AB.

     3.2  OXiGENE  shall  grant  to  Executive,   subject  to  approval  by  the
Compensation  Committee of the Board,  pursuant to the OXiGENE  Inc.  1996 Stock
Incentive Plan (the "Stock Plan"), an option to purchase 60,000 shares of common
stock of OXiGENE,  $.01 par value per share, as of the date hereof.  Such option
shall have an exercise  price equal to the Fair Market  Value (as defined in the
Stock  Plan) on the date of grant of such  option,  and  shall  vest and  become
exercisable in four (4) equal installments of 15,000 each on the first,  second,
third and fourth  anniversary  of the date of grant of such  option.  The option
shall be  evidenced  by,  and  subject  to, an  option  agreement  having  terms
described in the Stock Plan,  except to the extent  otherwise  specified in this
Agreement, including Section 6 hereof.

     4. Benefits

     Executive shall be entitled to participate in or receive benefits under any
employee  benefit plan,  arrangement  or perquisite  generally made available by
OXiGENE  during  the  Employment  Term  to its  executives  and  key  management
employees.

     5. Business Expenses

     Executive  shall  be  entitled  to  receive  prompt  reimbursement  for all
reasonable  and  customary  expenses  incurred  by  him in  performing  services
hereunder during the Employment  Term;  provided that such expenses are incurred
and accounted for in accordance with the policies and procedures  established by
OXiGENE and approved by the Board.

     6. Termination

     6.1 OXiGENE may,  upon giving  Executive  six (6) months'  written  notice,
terminate  Executive's  employment  subject to all provisions of this Agreement.
Notwithstanding the foregoing,  OXiGENE may terminate Executive's employment for
Cause without prior notice.  Executive  may, upon giving  OXiGENE ten (10) days'
notice,  terminate Executive's employment hereunder. If Executive terminates his
employment following a material breach of the Agreement by OXiGENE, which breach
remains  uncured  ten (10) days after  written  notice  thereof is  received  by
OXiGENE (a "Termination with Good Reason"), Executive shall be treated as if his
employment was terminated by OXiGENE without Cause.

     6.2 If Executive's employment is terminated by OXiGENE other than for Cause
(as  defined  below) or in the event of a  Termination  with Good  Reason,  then
OXiGENE shall provide the following to Executive:

     (a) as  soon  as  practicable  after  the  effective  date  of  Executive's
termination of employment  ("Termination Date") a lump sum cash payment equal to
the aggregate of the following:

          (1)  the portion of  Executive's  then current Base Salary  accrued to
               the Termination  Date but unpaid as of the Termination  Date (the
               "Unpaid Salary"); plus

          (2)  an amount equal to three (3) months' Base Salary; plus

          (3)  if Executive's  termination is a Termination with Good Reason, an
               amount equal to six (6) month's Base Salary.

     (b) All stock options,  stock  appreciation  rights,  restricted stock, and
other incentive  compensation  granted to the Executive by OXiGENE shall, to the
extent vested, remain exercisable in accordance with the terms of the Stock Plan
(or prior  applicable  plan) and the agreement  entered pursuant thereto and the
Executive  may exercise all such vested  options and rights,  and shall  receive
payments and distributions accordingly.

     6.3 Except as  otherwise  set forth in this Section 6, all  obligations  of
OXiGENE under this Agreement shall cease if, during the Employment Term, OXiGENE
terminates  Executive for Cause or the Executive  resigns his  employment  other
than in a Termination with Good Reason.  Upon such termination,  Executive shall
be entitled to receive in a lump sum cash payment as soon as  practicable  after
the Termination Date an amount equal to the Unpaid Salary.

     6.4 The foregoing  payments upon Executive's  termination  shall constitute
the exclusive  payments due Executive upon  termination from his employment with
OXiGENE under this  Agreement or otherwise,  provided,  however,  that except as
stated above,  such payments  shall have no effect on any benefits  which may be
payable to Executive  under any plan of OXiGENE which  provides  benefits  after
termination  of  employment,  other than  severance  pay or salary  continuation
pursuant  to an OXiGENE  plan  which  amount  shall be reduced by the  severance
amount received by Executive pursuant to this Agreement.

     6.5 For the purposes of this Agreement,  the term "Cause" shall mean any of
the following:

     (a) the (i)  continued  failure by Executive to perform  substantially  his
duties on behalf of OXiGENE if Executive  fails to remedy that breach within ten
(10) days of OXiGENE's  written  notice to  Executive  of such  breach;  or (ii)
material  breach of any other  provision of this Agreement by the Executive,  if
the  Executive  fails to remedy  that breach  within ten (10) days of  OXiGENE's
written notice to Executive of such breach; or

     (b) any act of fraud,  material  misrepresentation  or  material  omission,
misappropriation, dishonesty, embezzlement or similar conduct against OXiGENE or
any  affiliate,  or conviction of Executive for a felony or any crime  involving
moral turpitude.

     6.6 Upon  termination of Executive's  employment for any reason,  Executive
shall resign from the Board of OXiGENE, and any of its affiliates of which he is
then a  director;  such  resignations  shall be  effective  not  later  than the
effective date of termination of his employment unless otherwise mutually agreed
by Executive and the Board.

     7. No Solicitation; Confidentiality; Work for Hire

     7.1 Executive nor any  Executive-Controlled  Person  (defined  below) will,
without the prior written consent of the Board,  directly or indirectly  solicit
for employment,  employ in any capacity or make an unsolicited recommendation to
any other person that it employ or solicit for  employment  any person who is or
was, at any time during the nine (9) month period prior to the Termination Date,
an officer, executive or key employee of OXiGENE or of any affiliate of OXiGENE.
As used in this Agreement, the term "Executive-Controlled Person" shall mean any
company,  partnership,  firm or other  entity as to which  Executive  possesses,
directly  or  indirectly,  the power to direct  or cause  the  direction  of the
management and policies of such entity,  whether through the ownership of voting
securities, by contract or otherwise.

     7.2 (a) Executive  acknowledges  that, through his status as Executive Vice
President,  Scientific  Affairs of OXiGENE and as a member of the Board, he has,
and will have, possession of important,  confidential  information and knowledge
as to the business of OXiGENE and its affiliates, including, but not limited to,
information related to drugs and compounds developed or under development by the
Company,  financial  results and  projections,  future plans,  the provisions of
other important  contracts entered into by OXiGENE and its affiliates,  possible
acquisitions and similar  information.  Executive agrees that all such knowledge
and  information  constitutes  a vital part of the  business  of OXiGENE and its
affiliates  and is by its nature  trade  secrets  and  confidential  information
proprietary   to  OXiGENE  and  its  affiliates   (collectively,   "Confidential
Information").  Executive  agrees  that he  shall  not,  so long as the  Company
remains in existence, divulge, communicate,  furnish or make accessible (whether
orally  or in  writing  or in  books,  articles  or  any  other  medium)  to any
individual,  firm, partnership or corporation, any knowledge or information with
respect to Confidential  Information directly or indirectly useful in any aspect
of the business of OXiGENE or any of its  affiliates.  As used in the  preceding
sentence,   "Confidential  Information"  shall  not  include  any  knowledge  or
information that: (i) is or becomes available to others,  other than as a result
of breach by Executive of this Section 7.2; (ii) was available to Executive on a
nonconfidential basis prior to its disclosure to Executive through his status as
an officer or employee of OXiGENE or any affiliate;  or (iii) becomes  available
to Executive on a nonconfidential  basis from a third party (other than OXiGENE,
any  affiliate or any of its or their  representatives)  who is not bound by any
confidentiality obligation to OXiGENE or any affiliate.

     (b) All memoranda, notes, lists, records and other documents or papers (and
all copies  thereof),  including  such items  stored in  computer  memories,  on
microfiche or by any other means,  made or compiled by or on behalf of Executive
or made available to him relating to OXiGENE are and shall be OXiGENE's property
and shall be delivered to OXiGENE  promptly upon the  termination of Executive's
employment  with  OXiGENE or at any other time on request  and such  information
shall be held  confidential by Executive after the termination of his employment
with OXiGENE.

     7.3 As used in this  Agreement,  "Restricted  Period" shall mean the twelve
(12) months following Executive's termination of employment.

     7.4 The Executive grants the Company and each affiliate of the Company,  as
appropriate,  all rights in and to the contribution made by the Executive to any
projects or matters on which the Executive  works during the Term. The Executive
acknowledges  that each such matter and the  contribution  made by the Executive
thereto  shall  constitute a work made for hire within the meaning of the United
States copyright law and other applicable laws. The Company reserve's all rights
with respect to information relating to the Company's products,  including,  but
not limited to, the right to apply for patents.

     7.5 The  provisions  contained  in this  Section 7 as to the time  periods,
scope of activities,  persons or entities affected,  and territories  restricted
shall be deemed divisible so that, if any provision  contained in this Section 7
is determined to be invalid or  unenforceable,  such provisions  shall be deemed
modified  so as to  be  valid  and  enforceable  to  the  full  extent  lawfully
permitted.

     7.6 Executive  agrees that the  provisions of this Section 7 are reasonable
and necessary for the  protection of OXiGENE and that they may not be adequately
enforced by an action for damages and that, in the event of a breach  thereof by
Executive or any Executive-Controlled Person, OXiGENE shall be entitled to apply
for and  obtain  injunctive  relief in any court of  competent  jurisdiction  to
restrain  the breach or  threatened  breach of such  violation  or  otherwise to
enforce  specifically  such  provisions  against  such  violation,  without  the
necessity of the posting of any bond by OXiGENE. Executive further covenants and
agrees  that if he shall  violate  any of his  covenants  under this  Section 7,
OXiGENE  shall be  entitled  to an  accounting  and  repayment  of all  profits,
compensation,   commissions,  remuneration  or  other  benefits  that  Executive
directly or indirectly  has realized  and/or may realize as a result of, growing
out of or in connection with any such violation.  Such a remedy shall,  however,
be  cumulative  and not  exclusive  and shall be in addition  to any  injunctive
relief  or other  legal  or  equitable  remedy  to  which  OXiGENE  is or may be
entitled. Accordingly,  Executive agrees that he shall reimburse OXiGENE for any
reasonable  attorneys'  fees and expenses  that OXiGENE might incur in enforcing
this Section 7 if it is judicially  determined  that Executive has breached this
Section 7.

     8. Taxes

     Any  amounts  payable  to the  Executive  hereunder  shall  be  paid to the
Executive subject to all applicable taxes required to be withheld by the Company
pursuant  to  federal,  state or  local  law.  The  Executive  shall  be  solely
responsible  for all taxes  imposed on the Executive by reason of his receipt of
any amounts of compensation or benefits payable hereunder.

     9. Amendments

     This Agreement may not be altered,  modified or amended except by a written
instrument signed by each of the parties hereto.

     10. Assignment

     Neither this Agreement nor any of the rights or obligations hereunder shall
be assigned or delegated by any party hereto  without the prior written  consent
of the other parties; provided,  however, that any payments and benefits owed to
Executive  under  this  Agreement  shall  inure to the  benefit of his heirs and
personal representatives.

     11. Waiver

     Waiver by any party  hereto of any breach or default by any other  party of
any of the terms of this  Agreement  shall not  operate as a waiver of any other
breach or default,  whether  similar to or different  from the breach or default
waived.

     12. Severability

     In the event that any one or more of the provisions of this Agreement shall
be or become invalid,  illegal or  unenforceable  in any respect,  the validity,
legality and enforceability of the remaining  provisions  contained herein shall
not be affected thereby.

     13. Notices

     All notices and other  communications  provided for in this Agreement shall
be in  writing  and shall be deemed to have  been  duly  given  when  personally
delivered  or when  mailed by United  States  registered  mail,  return  receipt
requested, postage prepaid, addressed as follows:

                  If to Executive, to him as follows:

                  Dr. Ronald Pero
                  Tornaplatsen 3
                  S-223 63 Lund
                  Sweden

                  With a copy to:

                  If to OXiGENE, to it as follows:

                  OXiGENE Inc.
                  110 East 59th Street
                  New York, New York 10022
                  Attention:  M. Andica Kunst, Esq.

                  With a copy to:

                  Battle Fowler LLP
                  75 East 55th Street
                  New York, New York 10022
                  Attention:  Gerald A. Eppner, Esq.

or to such other  address or such other  person as  Executive  or OXiGENE  shall
designate in writing in  accordance  with this  Section 13,  except that notices
regarding changes in notices shall be effective only upon receipt.

     14. Headings

     Headings to  Sections  in this  Agreement  are for the  convenience  of the
parties  only and are not  intended to be a part of, or to affect the meaning or
interpretation of, this Agreement.

     15. Governing Law

     This  Agreement  shall be  governed  by the  laws of the  State of New York
without  reference to the  principles  of conflict of laws.  Each of the parties
hereto consents to the jurisdiction of the federal and state courts of the State
of New York in  connection  with  any  claim or  controversy  arising  out of or
connected with this Agreement.  Service of process in any such proceeding may be
made upon each of the parties  hereto at the address of such party as determined
in accordance with Section 13 of this Agreement, subject to the applicable rules
of the court in which such action is brought.

     16. All Other Agreements Superseded

     This Agreement  contains the entire agreement between Executive and OXiGENE
with respect to all matters relating to Executive's employment with OXiGENE and,
as of the date hereof, will supersede and replace any other agreements,  written
or oral,  between the parties relating to the terms or conditions of Executive's
employment with OXiGENE other than  agreements  relating to options entered into
pursuant to the Stock Plan or a predecessor plan of OXiGENE.

     IN WITNESS WHEREOF,  OXiGENE and Executive have caused this Agreement to be
executed as of the date first above written.



                               ____________________________
                               Ronald W. Pero



                               OXiGENE Inc.


                               By: _________________________
                                      Name:
                                      Title:









                        COLLABORATIVE RESEARCH AGREEMENT
                        --------------------------------


     This  agreement  ("AGREEMENT")  is made as of August  1,  1997  ("EFFECTIVE
DATE") by and between BOSTON MEDICAL CENTER CORPORATION (hereinafter referred to
as "BMCC"),  a Massachusetts  not-for-profit  corporation,  having its principal
place of business at One Boston  Medical  Center  Place,  Boston,  Massachusetts
02118,  which is a member  institution of the Boston University  Medical Center,
and  OXiGENE,  Inc.,   (hereinafter  referred  to  as  "OXiGENE"),   a  Delaware
corporation, having its principal place of business at 110 East 59th Street, New
York, New York 10022.


     WHEREAS,  BMCC  has  developed  certain  technology  involving  cordycepin,
deoxycoformycin  and other related compounds,  as potential novel agents for use
in cancer and infectious diseases, and has established, within its Department of
Medicine,  a research unit (referred to as the Developmental  Therapeutics Unit)
to focus on the  continued  study and  clinical  development  of these and other
novel therapeutic agents; and


     WHEREAS,  OXiGENE  and BMCC  entered  into a Clinical  Trial and  Sponsored
Research   Agreement,   effective  as  of  December  1,  1996  (the  "CORDYCEPIN
AGREEMENT",  a copy of which is attached  hereto for reference  purposes only as
Appendix  A),  pursuant  to which  BMCC,  among other  things,  is carrying  out
clinical and  laboratory-based  research studies on cordycepin,  deoxycoformycin
and other related compounds as novel therapeutic agents; and


     WHEREAS,  OXiGENE is engaged  in the design and  development  of drugs that
enhance the clinical  efficacy of radiation  therapy and  chemotherapy in cancer
treatment; and


     WHEREAS,  the continued study and further  development of these  radiation-
and  chemo-sensitizing  drugs in  collaboration  and  conjunction  with the BMCC
Developmental    Therapeutics    Unit's   on-going    studies   on   cordycepin,
deoxycoformycin and other related compounds,  as contemplated by this AGREEMENT,
is of mutual interest and benefit to OXiGENE and BMCC; and


     WHEREAS,  OXiGENE and BMCC wish to expand their collaboration to additional
areas of research;


     NOW,  THEREFORE,  in  consideration  of the mutual  promises and  covenants
herein  contained,  and other good and valuable  considerations,  the receipt of
which is acknowledged, the parties hereby agree as follows:


                             ARTICLE I--APPOINTMENT
                             ----------------------


1.1      In order to achieve the objectives contemplated by this AGREEMENT, BMCC
         shall support Dr. Ronald W. Pero, Professor of Molecular Ecogenetics at
         the  University  of Lund  in  Lund,  Sweden  ("LUND  UNIVERSITY"),  and
         OXiGENE's  Chief  Scientific  Officer,  in his  application to the BMCC
         Medical-Dental  Staff to become a member of the Scientific  Staff.  Dr.
         Pero  shall be a Research  Program  Director  within the  Developmental
         Therapeutics  Unit  of  the  BMCC  Department  of  Medicine.  With  his
         appointment  to the Medical  Dental Staff,  Dr. Pero will enjoy all the
         rights  and  benefits,   and  assume  all  the   responsibilities   and
         obligations,  as a member of the  Scientific  Staff as set forth in the
         BMCC Medical Dental Staff Bylaws.


1.2      In conjunction  with the appointment  contemplated by Section 1.1, BMCC
         will propose Dr. Pero for appointment to the rank of Research Professor
         of Medicine at Boston University School of Medicine.  This appointment,
         in accordance with Boston  University  Policy on Faculty  Appointments,
         will  constitute a secondary  professorial  appointment  to Dr.  Pero's
         primary  professorial  appointment  at LUND  UNIVERSITY.  Dr. Pero will
         enjoy  all  the  rights  and   benefits,   and  will   assume  all  the
         responsibilities  and obligations,  of full professorial  status in the
         Department of Medicine of Boston University School of Medicine.


1.3      BMCC  will   provide  Dr.   Pero  with   appropriate   laboratory   and
         administrative  space  and  facilities  within  the BMCC  Developmental
         Therapeutics   Unit  (the  "FACILITY")  to  carry  out  the  activities
         contemplated by this AGREEMENT.


1.4      By virtue of his appointment as a Research Program  Director,  Dr. Pero
         will have the  authority,  subject to review and approval by Dr. Joseph
         Loscalzo,  Chairman of the  Department  of Medicine of BMCC, to recruit
         and appoint appropriately  qualified individuals to serve as members of
         his  research  and   administrative   staff  within  the  Developmental
         Therapeutics Unit.


                          ARTICLE II--RESEARCH PROGRAM
                          ----------------------------


2.1      BMCC and  OXiGENE  agree to conduct  programs of  laboratory-based  and
         clinical   research  at  the  FACILITY  (the  "RESEARCH   PROGRAM")  in
         accordance with the terms of this AGREEMENT. The RESEARCH PROGRAM shall
         have the following component parts:

         (i)      A laboratory-based  and clinical program pursuant to which Dr.
                  Pero will conceive,  direct, manage and conduct research aimed
                  at the continued  development of  N-substituted  benzamides as
                  therapeutic  agents,  in continuity  with his on-going work at
                  LUND  UNIVERSITY as described in the  N-substituted  benzamide
                  Statement  of  Work  attached   hereto  as   Appendix  B  (the
                  "N-SUBSTITUTED BENZAMIDE PROGRAM").

         (ii)     The ongoing  laboratory-based and clinical program pursuant to
                  which Drs. McCaffrey and Sugar will conceive,  direct,  manage
                  and conduct  research  aimed at the continued  development  of
                  cordycepin,  deoxycoformycin  and other related compounds,  as
                  novel therapeutic agents in cancer and infectious  diseases as
                  described in the Cordycepin Statement of Work in Appendix B of
                  the  CORDYCEPIN   AGREEMENT  which  previously  governed  that
                  program (the "CORDYCEPIN PROGRAM").

         (iii)    Additional   laboratory-based  and  clinical  projects  to  be
                  proposed by Drs.  Pero,  McCaffrey and Sugar and other members
                  of the BMCC and Boston  University  faculty  to:  (a)  explore
                  potential    therapeutic   synergies   between   N-substituted
                  benzamides and cordycepin  and related  compounds;  and (b) to
                  identify  novel  therapeutic  agents for use in treating human
                  disease.

         (iv)     A program to  conceive,  design and  conduct  clinical  trials
                  employing  novel  therapeutic   agents  and/or  strategies  in
                  defined disease states.


2.2      OXiGENE  understands  that  BMCC's  primary  mission is  patient  care,
         education and advancement of knowledge,  and that the RESEARCH  PROGRAM
         contemplated   by  this  AGREEMENT  shall  be  performed  in  a  manner
         consistent  with  that  mission.  The  manner  of  conducting,  and the
         research  projects to be  undertaken  pursuant to the RESEARCH  PROGRAM
         shall be  determined  by a  committee  (the  "RESEARCH  PROGRAM  REVIEW
         COMMITTEE") initially consisting of:

         (i)      Dr.   Pero,    Research   Program   Director,    Developmental
                  Therapeutics Unit;

         (ii)     Dr.  Ronald P.  McCaffrey,  Head,  Developmental  Therapeutics
                  Unit;

         (iii)    Dr. Joseph  Loscalzo,  Chairman,  BMCC Department of Medicine;
                  and

         (iv)     a  representative   designated  by  OXiGENE;   initially  this
                  representative  shall be Dr.  Claus  Moller,  OXiGENE's  Chief
                  Medical Officer.

         The Committee shall operate under the Chairmanship of Dr. Loscalzo.


                           ARTICLE III -- COMPENSATION
                           ---------------------------


3.1      In consideration of BMCC's agreement to conduct the RESEARCH PROGRAM as
         determined  and  approved by the  RESEARCH  PROGRAM  REVIEW  COMMITTEE,
         OXiGENE  agrees to pay to BMCC the amounts  set forth in  Schedule  3.1
         attached hereto (the "INITIAL RESEARCH  BUDGET").  The INITIAL RESEARCH
         BUDGET shall cover the expense of  conducting  the RESEARCH  PROGRAM at
         the FACILITY for the 12-month period ending July 31, 1998.


3.2      The RESEARCH  PROGRAM REVIEW  COMMITTEE  shall  determine and approve a
         budget for each  12-month  period  subsequent  to the INITIAL  RESEARCH
         BUDGET  (each a  "SUBSEQUENT  BUDGET"  and  together  with the  INITIAL
         BUDGET,  the  "BUDGET")  no later than  three (3)  months  prior to the
         beginning  of the  12-month  period  to which  such  SUBSEQUENT  BUDGET
         relates. The RESEARCH PROGRAM REVIEW COMMITTEE,  by unanimous decision,
         shall  allocate  each  BUDGET to the  component  parts of the  RESEARCH
         PROGRAM. The RESEARCH PROGRAM REVIEW COMMITTEE shall review each BUDGET
         from time to time to determine if any  reallocations  are  necessary or
         appropriate.


3.3      BUDGET  payments  to be made  pursuant  to ARTICLE III shall be made in
         quarterly  installments in advance, with the first payment due promptly
         after the EFFECTIVE DATE.  BUDGET payments shall be made in the name of
         "BOSTON MEDICAL CENTER  CORPORATION,"  and if by check shall be sent to
         Boston Medical Center Corporation,  Office of Grants and Contracts, One
         Boston Medical Center Place, Suite V412, Boston,  Massachusetts  02118,
         Attention:  Director. If payments are made by wire transfer, they shall
         be sent to State Street Bank,  ABA Number  011000028,  to the credit of
         Account Number 6960-770-3, Beneficiary Boston Medical Center.


                  ARTICLE IV--REVIEW, CONSULTATION, AND ACCESS
                  --------------------------------------------


4.1      From time to time  during  the  performance  of the  RESEARCH  PROGRAM,
         OXiGENE representatives, upon reasonable advance notice, shall have the
         opportunity  to meet and consult with Drs. Pero,  McCaffrey,  Sugar and
         any other Principal  Investigator funded under the BUDGET regarding the
         progress and performance of the RESEARCH PROGRAM.


4.2      Drs. Pero, McCaffrey, Sugar and all Principal Investigators funded from
         the BUDGET, shall provide:

         (a)      a quarterly accounting, by project, of funds expended;

         (b)      a written  progress  report on the RESEARCH  PROGRAM every six
                  (6) months;

         (c)      and a  comprehensive  written  progress report on the RESEARCH
                  PROGRAM every twelve (12) months

         to the RESEARCH PROGRAM REVIEW COMMITTEE,  with copies to OXiGENE,  the
         Chairman of the BMCC  Department  of Medicine  and the  Director of the
         Office  of  Technology  Transfer  of  Boston  University.  The  reports
         contemplated  by this Section 4.2 shall  include an  accounting  of the
         disposition of funds,  and a projection of budget  requirements  during
         the next twelve (12) months.


                             ARTICLE V--PUBLICATION
                             ----------------------


5.1      Each Principal  Investigator of any RESEARCH  PROGRAM  conducted at the
         FACILITY  and  funded  from the  BUDGET  shall be free to publish or to
         present  at  professional  scientific  conferences  the  results of the
         RESEARCH  PROGRAM  conducted  pursuant to this  AGREEMENT.  In order to
         protect against loss of confidentiality or patent rights as a result of
         any such publication or presentation,  a Principal  Investigator  shall
         submit copies of drafts of any intended  publication or presentation of
         results of the RESEARCH PROGRAM conducted pursuant to this AGREEMENT to
         OXiGENE  at least  thirty  (30) days prior to the  anticipated  date of
         submission of data for publication or presentation.  If OXiGENE, in its
         reasonable   judgment,   requires   additional   time  to  seek  patent
         protection,  then the Principal Investigator shall defer the submission
         of the materials for such publication or presentation for an additional
         thirty (30) days.


                           ARTICLE VI--CONFIDENTIALITY
                           ---------------------------


6.1      OXiGENE may wish,  from time to time, in  connection  with the RESEARCH
         PROGRAM to be conducted at the FACILITY pursuant to this AGREEMENT,  to
         disclose to RESEARCH PROGRAM personnel information that is confidential
         and  proprietary  in  nature.  All  such  information  which  has  been
         indicated as confidential orally if disclosed orally or has been marked
         confidential if disclosed in writing, electronically or visually, shall
         be kept confidential by RESEARCH PROGRAM personnel for a period of five
         (5) years from the date of receipt  of such  CONFIDENTIAL  INFORMATION.
         This obligation shall not apply to any information which:

         (a)      was already known to RESEARCH  PROGRAM  personnel as evidenced
                  by written records;

         (b)      is, or at some  future  time,  becomes  publicly  known  under
                  circumstances  not  involving  a breach of this  AGREEMENT  by
                  RESEARCH PROGRAM  personnel,  or any other person subject to a
                  confidentiality or non-disclosure obligation to OXiGENE;

         (c)      RESEARCH   PROGRAM   personnel  are  legally   compelled,   by
                  applicable law, to disclose,  provided,  however, that in such
                  an event RESEARCH  PROGRAM  personnel shall give prompt notice
                  to  OXiGENE  of  such a  requirement  so  that  it may  seek a
                  protective order or other appropriate remedy.


6.2      All RESEARCH PROGRAM personnel to whom OXiGENE  discloses  CONFIDENTIAL
         INFORMATION shall sign a CONFIDENTIALITY AGREEMENT in the form attached
         hereto as Appendix C.


6.3      Neither RESEARCH PROGRAM personnel,  nor BMCC, its trustees,  officers,
         employees and agents shall be liable for any claim or damage  resulting
         from the disclosure of CONFIDENTIAL  INFORMATION,  except to the extent
         that same results from  negligence  or willful  misconduct  of any such
         person or entity.  In no event shall  RESEARCH  PROGRAM  personnel  and
         BMCC,  its  trustees,  officers,  employees  and  agents be liable  for
         indirect,  special or consequential damages (including, but not limited
         to, lost profits).  In no event shall the liability of RESEARCH PROGRAM
         personnel and BMCC, its trustees, officers, employees and agents exceed
         the  amounts  payable  to BMCC  under  this  AGREEMENT.  The  foregoing
         notwithstanding,  RESEARCH  PROGRAM  personnel  and BMCC agree that the
         provisions  regarding   CONFIDENTIAL   INFORMATION  contained  in  this
         AGREEMENT  are fair and  reasonable,  that money damages would not be a
         sufficient  remedy for any breach of this AGREEMENT by RESEARCH PROGRAM
         personnel or BMCC, and that in addition to all other remedies,  OXiGENE
         shall be entitled  to  specific  performance  and  injunctive  or other
         equitable relief as a remedy for such breach.


                             ARTICLE VII--PUBLICITY
                             ----------------------


7.1      Neither  party  shall use the name of the other  party or of any of the
         RESEARCH  PERSONNEL in any advertising or promotional  material without
         the  prior  written   approval  of  the  other  party.   The  foregoing
         notwithstanding,   (i)  BMCC  shall  acknowledge   OXiGENE'S  financial
         contribution   and  sponsorship  of  the  RESEARCH  PROGRAM  in  BMCC's
         customary  reports and  publications;  (ii)  OXiGENE may file a copy of
         this AGREEMENT  (redacted to the extent  permitted by applicable law to
         ensure  confidentiality)  as an exhibit to, and disclose the  existence
         and  describe  the terms of this  AGREEMENT  in,  its  press  releases,
         reports and filings,  including, but not limited to, releases,  reports
         and filings with the US Securities and Exchange Commission and relevant
         non-US government authorities;  and (iii) OXiGENE may make reference to
         technical   publication   by  RESEARCH   PROGRAM   personnel  or  their
         co-authors. Any publicity of this AGREEMENT pursuant to this ARTICLE VI
         shall  describe  the   relationship  of  the  parties   accurately  and
         appropriately.


                      ARTICLE VIII--INVENTIONS AND PATENTS
                      ------------------------------------


8.1      BMCC shall own all rights to any patentable discovery or invention made
         at the  FACILITY  in the course of work  conducted  under the  RESEARCH
         PROGRAM  and funded  from the  BUDGET,  including,  but not limited to,
         processes,    methods,    formulas   and   techniques    (collectively,
         "INVENTIONS").


8.2      A  committee  (the  "PATENT  COMMITTEE")  consisting  of Drs.  Pero and
         McCaffrey,  the Director of the Office of Technology Transfer of Boston
         University,  one additional  representative to be nominated by BMCC and
         two additional  representatives to be nominated by OXiGENE, shall, from
         time to  time,  but no  less  frequently  than  every  six (6)  months,
         evaluate observations,  discoveries and inventions made at the FACILITY
         in the  course  of work  conducted  under  the  RESEARCH  PROGRAM,  and
         determine  whether to proceed  with the filing of a patent  application
         with respect to any such observation, discovery or invention. The costs
         of such patent  filing  shall be the  responsibility  of  OXiGENE.  Any
         patent filing and prosecution  expense  incurred by OXiGENE pursuant to
         this AGREEMENT shall be offset against future  royalties due by OXiGENE
         in respect of any  LICENSE (as  defined in Section  8.3).  In the event
         that the PATENT COMMITTEE  determines that a patent should not be filed
         pursuant to this  AGREEMENT,  each of BMCC or OXiGENE,  as the case may
         be, may file a patent  application  in its  respective  name and at its
         respective  expense,  and shall so inform the other party. In the event
         that such a patent is commercialized  by either BMCC and OXiGENE,  BMCC
         and OXiGENE will negotiate financial terms (including royalties and the
         distribution  thereof)  with  respect  to such a patent in good  faith,
         recognizing the origin of the INVENTION to be in the RESEARCH  PROGRAM,
         and thus subject to the overall terms and conditions of ARTICLE VIII.


8.3      OXiGENE  shall  have the option to  acquire  an  exclusive,  worldwide,
         royalty-bearing   license  (a   "LICENSE"),   including  the  right  to
         sublicense,  to make, have made,  use, lease,  market and sell products
         embodying, or produced through the use of, any INVENTION. Any agreement
         with respect to a LICENSE shall include  financial  terms generally and
         customarily  found in  license  agreement,  including  a royalty on net
         sales within the range set forth in Schedule  8.3  attached  hereto and
         appropriate due diligence and administrative provisions.


8.4      Any LICENSE granted to OXiGENE pursuant to Section 8.3 shall be subject
         to the Boston  University  Medical  Center Patent  Policy,  except that
         royalty income  received by BMCC from  INVENTIONS made in the course of
         work  conducted  under the  N-SUBSTITUTED  BENZAMIDE  PROGRAM  shall be
         distributed as follows:

         (i)      20% to BMCC for its unrestricted use;

         (ii)     80% to BMCC  to be  applied  against  future  BUDGETS  for the
                  RESEARCH PROGRAM.

         provided,  however,  that  royalty  income  received by BMCC from JOINT
         INVENTIONS (as defined below) shall be distributed  fifty percent (50%)
         in accordance with Boston  University  Medical Center Patent Policy and
         fifty percent (50%) in accordance  with the  provisions of this Section
         8.4.  For  purposes  of this  AGREEMENT,  a  "JOINT  INVENTION"  is any
         invention  made at the FACILITY in the course of work  conducted  under
         the RESEARCH  PROGRAM that is the subject of a U.S. patent  application
         in which the persons  properly named as inventors under U.S. patent law
         include at least (a) one (1) individual  whose RESEARCH PROGRAM work is
         funded  from the  BUDGET  and whose  work is  primarily  related to the
         N-SUBSTITUTED  BENZAMIDE PROGRAM,  and (b) one (1) individual funded by
         BMCC whose work is primarily  related to the components of the RESEARCH
         PROGRAM set forth in Sections 2.1 (iii) and (iv).


8.5      Royalty  income  received  from  INVENTIONS  made in the course of work
         conducted  under  the  CORDYCEPIN   PROGRAM  shall  be  distributed  in
         accordance with the Boston University Medical Center Patent Policy.


8.6      If OXiGENE elects to exercise its option to acquire a LICENSE,  OXiGENE
         and BMCC agree to negotiate  the specific  terms thereof in good faith.
         The parties agree to use their  reasonable best efforts to complete any
         LICENSE negotiations,  including the execution of an agreement,  within
         six (6) months of OXiGENE'S written notice to BMCC electing to exercise
         its  option,  provided,  however,  that if OXiGENE  and BMCC agree that
         reasonable  progress has been made in the  negotiations of a particular
         LICENSE  agreement,  the  six-month  period  shall be extended  for one
         period  of  ninety  (90)  days  to  allow  for the  conclusion  of such
         negotiations.  If  no  agreement  on  the  terms  and  conditions  of a
         particular  LICENSE agreement can be reached within the period provided
         in the  preceding  sentence,  then BMCC  shall be free to  negotiate  a
         license  arrangement  with a third party.  If the terms and  conditions
         agreed  to  between  BMCC and any  third  party,  taken in  total,  are
         materially more favorable to such third party than those that were last
         offered to, and not  accepted by,  OXiGENE  (the "THIRD PARTY  TERMS"),
         BMCC shall  give  prompt  written  notice  (the  "THIRD  PARTY  LICENSE
         NOTICE") to OXiGENE of the THIRD PARTY TERMS,  and OXiGENE shall have a
         right of first refusal  (exercisable  by written  notice to BMCC within
         ten (10) days  after  receipt by  OXiGENE  of the THIRD  PARTY  LICENSE
         NOTICE)  to enter  into a  license  arrangement  with BMCC on the THIRD
         PARTY TERMS.


8.7      If OXiGENE declines to exercise its option to acquire a LICENSE because
         the subject matter of the INVENTION is outside its strategic focus, and
         BMCC licenses such INVENTION to a third party,  income received by BMCC
         from such third party licensee shall be distributed in accordance  with
         the provisions of Section 8.4.


                             ARTICLE IX -- LIABILITY
                             -----------------------


9.1      OXiGENE shall defend,  indemnify and hold harmless  BMCC, its trustees,
         officers,  employees and agents and their respective successors,  heirs
         and  assigns  (collectively,  the  "INDEMNITEES"),  against any and all
         liability,  damage,  loss or expense (including  reasonable  attorneys'
         fees and  expenses of  litigation)  that may be incurred by, or imposed
         upon, the  INDEMNITEES,  or any of them, in connection  with any claim,
         suit, demand, action or judgment arising out of the following:

         (a)      the design,  production,  manufacture,  sale, use in commerce,
                  lease,   or  promotion  by  OXiGENE  or  by  an  affiliate  or
                  sublicensee  of  OXiGENE  of any  product,  process or service
                  relating to or developed pursuant to this Agreement; or

         (b)      any  other  activities  to be  carried  out  pursuant  to this
                  Agreement.


9.2      OXiGENE shall have no obligation  to indemnify  against any  liability,
         damage,  loss or  expense  (including  reasonable  attorneys'  fees and
         expenses of litigation) to the extent the same is attributable  to: (i)
         the negligence or willful misconduct of any of the INDEMNITEES; or (ii)
         if the RESEARCH PROGRAM involves a clinical trial of an investigational
         drug, a failure of any of the INDEMNITEES to adhere to the terms of the
         protocol  or  OXiGENE'S  written  instructions  relative  to use of the
         investigational  drug;  or (iii)  the loss by BMCC of its  status  as a
         not-for-profit  corporation  under  Section  501(c)(3)  of the Internal
         Revenue Code of 1986, as amended.


9.3      BMCC  MAKES  NO  WARRANTIES,  EXPRESS  OR  IMPLIED,  AS TO  ANY  MATTER
         WHATSOEVER,   INCLUDING,  WITHOUT  LIMITATION,  THE  CONDITION  OF  THE
         RESEARCH  OR  ANY   INVENTION(S)  OR  PRODUCT(S),   WHETHER   TANGIBLE,
         CONCEIVED,  DISCOVERED  OR  DEVELOPED  UNDER  THIS  AGREEMENT;  OR  THE
         MERCHANTABILITY  OR FITNESS FOR A PARTICULAR PURPOSE OF THE RESEARCH OR
         ANY SUCH INVENTION OR PRODUCT. BMCC SHALL NOT BE LIABLE FOR ANY DIRECT,
         CONSEQUENTIAL OR OTHER DAMAGES SUFFERED BY OXiGENE, ANY LICENSEE OR ANY
         OTHERS  RESULTING FROM THE USE OF THE RESEARCH OR ANY SUCH INVENTION OR
         PRODUCT.


                       ARTICLE X -- INDEPENDENT CONTRACTOR
                       -----------------------------------


10.1     For the  purpose of this  AGREEMENT  and all  services  to be  provided
         hereunder, the parties shall be, and shall be deemed to be, independent
         contractors  and not agents or employees  of the other  party.  Neither
         party shall have authority to make any statements,  representations  or
         commitments  of any kind,  or to take any action which shall be binding
         on the other party,  except as may be explicitly provided for herein or
         authorized in writing.


                       ARTICLE XI -- TERMS AND TERMINATION
                       -----------------------------------


11.1     The initial term of this  AGREEMENT  shall be from July 1, 1997 through
         June 30,  2000.  This  AGREEMENT  shall  automatically  be extended for
         additional 12- month periods, provided,  however, that either party may
         give written notice (a "TERMINATION NOTICE") to the other party that it
         desires to terminate this AGREEMENT, in which case this AGREEMENT shall
         terminate  effective as of the date that is twelve (12) months from the
         TERMINATION NOTICE.


11.2     BMCC may terminate  the  AGREEMENT  upon thirty (30) days prior written
         notice to  OXiGENE  if  circumstances  beyond  its  control  reasonably
         preclude continuation of the RESEARCH PROGRAM.


11.3     If,  based on any of the  meetings or reports  specified in ARTICLE IV,
         OXiGENE,  in  its  sole  and  absolute   discretion,   determines  that
         scientific  progress  in any  one or  more  of  the  components  of the
         RESEARCH  PROGRAM has been  inadequate  and that it wishes to terminate
         funding for said  component,  then OXiGENE may give  written  notice to
         BMCC of its  determination,  in which case  funding  for such  RESEARCH
         PROGRAM  component  will  terminate  effective  three (3) months  after
         receipt of said notice by BMCC.


11.4     In the  event  that  either  party  shall be in  default  of any of its
         obligations  under this AGREEMENT and shall fail to remedy such default
         within sixty (60) days after  receipt of written  notice  thereof,  the
         party not in default shall have the right to terminate  this  AGREEMENT
         immediately by giving written notice thereof.


11.5     Termination  or  cancellation  of this  AGREEMENT  shall not affect the
         rights and  obligations  of the parties  accrued prior to  termination.
         Upon any  termination of this  AGREEMENT,  BMCC shall be entitled to be
         compensated for all reasonable out-of-pocket expenses and uncancellable
         commitments  incurred as of the  effective  date of  termination  in an
         amount  not to  exceed  the  remaining  amount  then  budgeted  for the
         RESEARCH PROGRAM.


11.6     ARTICLES VI and VIII and any other  provisions of this AGREEMENT  which
         by their nature extend beyond the  termination of this AGREEMENT  shall
         survive  such  termination.  If  an  INVENTION(S)  made  prior  to  the
         termination of this AGREEMENT  results in royalty income  subsequent to
         the  termination  of this  AGREEMENT and said royalty income comes from
         INVENTIONS made in the course of work conducted under the N-SUBSTITUTED
         BENZAMIDE PROGRAM, it shall be distributed as follows:

         (i)      50% to BMCC and

         (ii)     50% to OXiGENE

         until BMCC has received five million dollars ($5,000,000) in cumulative
         payments, and thereafter:

         (iii)    20% to BMCC and

         (iv)     80% to OXiGENE.

         If said royalty  income is from JOINT  INVENTIONS,  fifty percent (50%)
         shall be  distributed  in  accordance  with Boston  University  Medical
         Center Patent  Policy and fifty  percent  (50%) in accordance  with the
         provisions of this Section 11.6.


                      ARTICLE XII -- MEDIATION/ARBITRATION
                      ------------------------------------


12.1     In the event a  controversy  or  dispute  arises  between  the  parties
         relating to any provision of this AGREEMENT, including, but not limited
         to, the specific  terms of any LICENSE  agreement  being  negotiated in
         connection  with the exercise of OXiGENE'S  option  pursuant to Section
         8.3  hereof,  or the breach of any  provision  of this  AGREEMENT,  the
         parties  agree to use the  following  procedure  prior to either  party
         pursuing other available remedies.

         (a)      The parties shall promptly hold a meeting,  such meeting to be
                  attended  by  individuals   with   decision-making   authority
                  regarding the dispute, in an attempt to negotiate a resolution
                  of the dispute in good faith.

         (b)      If within thirty (30) days after such meeting the parties have
                  not succeeded in negotiating a resolution of the dispute, they
                  agree to submit  the  dispute  to  mediation  by the  American
                  Arbitration   Association  (the  "AAA"),   the  cost  of  such
                  mediation to be borne equally by both parties.

         (c)      The  parties  agree  to  participate  in  good  faith  in  the
                  mediation  and  negotiations  related  thereto for a period of
                  thirty  (30)  days.  If the  parties  are  not  successful  in
                  resolving the dispute through mediation, then either party may
                  submit the dispute to arbitration, unless the parties mutually
                  agree otherwise.


12.2     Arbitration shall be subject to the following terms:

         (a)      The arbitration shall be held at a mutually agreeable location
                  in the Boston, Massachusetts metropolitan area.

         (b)      The  arbitrator(s)  shall be an  independent,  impartial third
                  party(ies)  having no direct or indirect personal or financial
                  relationship  to any  of  the  parties  to  the  dispute,  who
                  has(have) agreed to accept the appointment as arbitrator(s) on
                  the terms set out in this ARTICLE XII.

         (c)      The arbitrator(s) shall be an active or retired attorney,  law
                  professor  or  judicial  officer  with at least five (5) years
                  experience in  commercial  technology  transfer  matters and a
                  familiarity  with the laws  governing  proprietary  rights  in
                  intellectual property.

         (d)      The arbitrator(s) shall be selected as follows:

                  Each  party  shall  submit a  description  of the matter to be
                  arbitrated  together with the terms of this ARTICLE XII to the
                  AAA at its Regional Office in Boston,  Massachusetts.  The AAA
                  shall   submit  to  the  parties  a  list  of  the   qualified
                  arbitrators  available  to  arbitrate  the  matter.  The first
                  arbitrator  acceptable  to both  parties  shall be deemed  the
                  selected  arbitrator with respect to the dispute then at issue
                  under  this  AGREEMENT.  In the event of a failure to select a
                  mutually agreeable arbitrator, the parties will each select an
                  arbitrator  and  the  two  arbitrators  will  select  a  third
                  arbitrator.

         (e)      Within sixty (60) days after  selection of the  arbitrator(s),
                  each  party  shall  submit a  description  of the matter to be
                  arbitrated to said arbitrator(s).

         (f)      From the  date  the  arbitrator(s)  is in  possession  of both
                  parties'  submitted  material,  the  arbitrator(s)  shall have
                  forty-five  (45)  days in which  to hear  oral  testimony  and
                  render a decision.  Each party shall have a maximum of two (2)
                  working  days  during said  forty-five  day period in which to
                  present oral testimony.

         (g)      Time periods set forth in this ARTICLE XII may be altered only
                  by mutual consent of the parties;

         (h)      The   arbitrator(s)   shall  announce  the  award  in  writing
                  accompanied   by  written   findings   explaining   the  facts
                  determined   in  support   of  the  award  and  any   relevant
                  conclusions of law;

         (i)      The fees of the  arbitrator(s)  and any  other  costs and fees
                  associated  with the  arbitration  shall be paid in accordance
                  with  the  decision  of the  arbitrator(s),  except  that  the
                  prevailing  party  shall  pay no more  than  one-half  of such
                  costs.

         (j)      Except as  provided  in Section  12.2(i) the  decision of  the
                  arbitrator(s)  shall be final and binding on all parties,  and
                  judgment   may  be  entered   thereon  in  any  court   having
                  jurisdiction thereof.


                             ARTICLE XIII -- GENERAL
                             -----------------------


13.1     This  AGREEMENT  may not be assigned by either party  without the prior
         written consent of the other party, provided, however, that OXiGENE may
         assign this AGREEMENT,  in whole or in part, to any person controlling,
         under  common  control with or  controlled  by OXiGENE.  The  foregoing
         notwithstanding,  the  sale of all or  substantially  all of  OXiGENE'S
         assets or the merger or  consolidation  of OXiGENE with or into another
         entity shall not be deemed an assignment by OXiGENE of this AGREEMENT.


13.2     This AGREEMENT  constitutes  the entire  agreement  between the parties
         hereto with respect to the subject  matter  hereof,  and supersedes and
         replaces any prior agreement or understanding, whether written or oral.
         No representations and warranties, other than those expressly set forth
         herein,   shall  be   deemed   to  have  been   made.   The   foregoing
         notwithstanding,  the  CORDYCEPIN  AGREEMENT is hereby  terminated  and
         shall no longer have any force and effect,  except provisions  relating
         to the STUDY (as defined in the CORDYCEPIN AGREEMENT) and ARTICLE VIII,
         including  APPENDIX E (with  respect to the  licensing  of  cordycepin)
         shall remain in effect. This AGREEMENT may not be amended,  modified or
         supplemented, unless signed by the parties hereto.


13.3     Any notice  required  by this  AGREEMENT  shall be deemed  sufficiently
         given  if sent  in  writing  by  prepaid,  first  class,  certified  or
         registered  mail,  return receipt  requested,  addressed in the case of
         BMCC to:

                  Office of General Counsel
                  Boston Medical Center Corporation
                  One Boston Medical Center Place, Suite 217
                  Boston, MA  02118
                           Attn.: General Counsel


                  with a copy to:


                  Office of Technology Transfer
                  Community Technology Fund
                  Boston University
                  108 Bay State Road
                  Boston, MA 02215
                           Attn.:  Director


                  and in the case of OXiGENE to:


                  OXiGENE, Inc.
                  110 East 59th Street, 29th Floor
                  New York, NY 10022
                           Attn.:  Vice President


                  with a copy to:


                  OXiGENE Europe AB
                  Ideon Research Park
                  Scheelevagen 17
                  S-223 70 Lund,
                  SWEDEN
                           Attn.:  Chief Scientific Officer


         or at such other address as may be designated by notice given from time
         to time pursuant to the terms of this provision.


13.4     This AGREEMENT  shall be construed and enforced in accordance  with the
         laws of the Commonwealth of Massachusetts.



     IN WITNESS  WHEREOF,  the parties have caused this agreement to be executed
by their duly authorized representatives.


OXiGENE, Inc                             BOSTON MEDICAL CENTER
CORPORATION


By:      --------------------------      By:     -------------------------


Name:    Bo Haglund                      Name:   Kevin Ward


Title:   Chief Financial Officer         Title:  Director of Financial Planning






                        TECHNOLOGY DEVELOPMENT AGREEMENT
                                 No. 206-01.OPT

THIS AGREEMENT,  made this 27th day of May, 1997 (the "EFFECTIVE  DATE"),  is by
and between  the ARIZONA  BOARD OF  REGENTS,  a body  corporate  of the State of
Arizona,  acting on behalf of and for ARIZONA STATE UNIVERSITY of Tempe, Arizona
("ASU") and OXiGENE Europe AB, a corporation  organized under the laws of Sweden
having  its  principal  place  of  business  located  at  IDEON  Research  Park,
Scheelevagen 17, S-223 70 Lund, SWEDEN ("OPTIONEE").

                                    RECITALS
                                    --------

A.       Certain inventions,  generally characterized as a family of Anti-cancer
         drugs known under the name  "Combretastatins" and collectively referred
         to as the  "TECHNOLOGY",  were made in the course of research at ASU by
         G. Robert Pettit,  and others and are covered by ASU's Patent Rights as
         defined below.

B.       ASU  owns  certain  patent   applications   and  patents  covering  the
         TECHNOLOGY as set forth in Paragraph 1.1 (ASU's PATENT RIGHTS), and ASU
         may file one or more additional applications claiming the TECHNOLOGY or
         novel adaptations or modifications of it.

C.       The National Cancer Institute  sponsored part of the development of the
         TECHNOLOGY  and,  as  a  consequence,  this  Agreement  is  subject  to
         overriding  obligations  to the Federal  Government  as set forth in 35
         U.S.C. 200-212 and applicable governmental implementing regulations.

D.       ASU is desirous  that the  TECHNOLOGY  be developed and utilized to the
         fullest  extent so that the  benefits  can be  enjoyed  by the  general
         public.

E.       The OPTIONEE is desirous of obtaining  certain  rights from ASU for the
         commercial development, use and sale of products or services covered by
         ASU's PATENT RIGHTS, and ASU is willing to grant such rights;


                                    AGREEMENT
                                    ---------

1.       DEFINITIONS

         1.1.     "ASU's PATENT  RIGHTS" shall mean patent rights to any subject
                  matter claimed in or covered by any of the following:

                  Under ASU Case No. 206: 
                  ----------------------  
                  U.S. Patent Nos.  5,409,953 & 5,569,786  entitled  "Isolation,
                  Structural  Elucidation and Synthesis of Novel  Antineoplastic
                  Substances Denominated "Combretastatins""

                  Under ASU Case No. 224:  
                  ----------------------   
                  U.S. Patent No. 4,996,237 entitled "Combretastatin A-4"

                  Under ASU Case No. 516:  
                  ----------------------   
                  U.S.  Patent No.  4,940,726  entitled "Cell Growth  Inhibitory
                  Macrocyclic  Lactones   Denominated   Combretastatin  D-1  and
                  Combretastatin D-2"

                  Under ASU Case No. 700:  
                  ----------------------   
                  U.S.  Patent  No.  5,561,122  entitled   "Combretastatin   A-4
                  Prodrug"

                  and continuing  applications  thereof including all additions,
                  renewals,   divisions,   substitutions,    continuations   and
                  continuation-in-part applications; any patents issuing on said
                  application or continuing applications including reissues; and
                  any corresponding foreign applications or patents.

         1.2.     "LICENSED  PRODUCT"  shall  mean  any  material,  composition,
                  composition of matter, compound,  device or embodiment the use
                  of which would constitute,  but for any license granted to the
                  OPTIONEE,  pursuant to a LICENSE  AGREEMENT,  if  entered,  an
                  infringement  of any  pending  or issued  claim  within  ASU's
                  PATENT RIGHTS as defined herein.

         1.3.     "LICENSED METHOD" shall mean any method, procedure, process or
                  other subject matter whose use or practice  would  constitute,
                  but for any license granted to OPTIONEE, pursuant to a LICENSE
                  AGREEMENT, if entered, an infringement of any claim in the ASU
                  PATENT RIGHTS as defined herein.

         1.4.     "KNOW-HOW"   shall  mean  all  technical  data,   information,
                  materials and technical  expertise that relates to TECHNOLOGY,
                  including without  limitation,  chemical and physical data and
                  techniques,   clinical  data,  medical  uses,  product  forms,
                  formulations, and specifications.

         1.5.     "NET  SALES"  means the total of the gross  invoice  prices of
                  LICENSED PRODUCTS sold by the OPTIONEE, if the parties enter a
                  LICENSE   AGREEMENT,   an  AFFILIATE  or  a  sublicensee,   if
                  applicable, less the sum of the following actual and customary
                  deductions   where   applicable:   cash,   trade  or  quantity
                  discounts;  sales, use, tariff,  import/export duties or other
                  excise taxes  imposed on or levied with respect to any sale of
                  LICENSED  PRODUCTS;  transportation  charges and allowances or
                  credits  to  customers   because  of  rejections  or  returns.
                  Transfers to an AFFILIATE or  sublicensee  for end use by such
                  AFFILIATE or sublicensee if applicable shall be treated as NET
                  SALES.

         1.6.     "AFFILIATE"  means any  corporation or other  business  entity
                  that, directly or indirectly, controls, is controlled by or is
                  under common control with OPTIONEE provided,  however, that in
                  any  country  where the local  law  shall not  permit  foreign
                  equity  participation  of at least  50%,  then an  "AFFILIATE"
                  shall  include any company in which the OPTIONEE  shall own or
                  control,  directly or  indirectly,  the maximum  percentage of
                  such  outstanding  stock or voting  rights  permitted by local
                  law.

         1.7.     "INVENTOR" shall, for the purposes of this Agreement, mean Dr.
                  George R. Pettit and others  whose names appear on the patents
                  or patent applications described under Section 1.1.

         1.8.     "TERM" shall mean that period  beginning on the EFFECTIVE DATE
                  and  ending on the date that is twenty  four  months  from the
                  EFFECTIVE DATE.

         1.9.     "LICENSE  AGREEMENT" means the license  agreement  between ASU
                  and  OPTIONEE  that shall  result if  OPTIONEE  exercises  its
                  option pursuant to Article 4 and the parties are successful in
                  negotiating pursuant to Article 6.

         1.10.    "TECHNOLOGY" means certain inventions, generally characterized
                  as  a  family  of  anti-cancer  drugs  known  under  the  name
                  "Combretastatins",  which were made in the course of  research
                  at ASU by Drs.  G. Robert  Pettit,  et. al. and are covered by
                  ASU's Patent Rights as defined herein.


2.       SCOPE OF GRANT AND DURATION

         2.1.     On the terms and conditions set forth in this  Agreement,  ASU
                  hereby  grants to OPTIONEE an  exclusive  option to acquire an
                  exclusive  world-wide  license to ASU's PATENT RIGHTS to make,
                  have  made,  market,  sell,   sub-license  and  otherwise  use
                  LICENSED PRODUCTS and to practice the LICENSED METHOD.

         2.2.     Said option  shall have a duration  for the TERM  specified in
                  Section 1.10.

         2.3.     No  license  shall be deemed to have been  granted  unless and
                  until OPTIONEE exercises its option and a LICENSE AGREEMENT is
                  executed and delivered by OPTIONEE and ASU as  contemplated by
                  this Agreement.

         2.4.     Under this Agreement,  OPTIONEE,  in its own name,  shall have
                  the  right to file an  Investigational  New  Drug  Application
                  (IND) with the United  States Food & Drug  Administration  (US
                  FDA) with respect to clinical testing of the TECHNOLOGY.


3.       OPTION FEE 

         As consideration  for this Agreement,  OPTIONEE agrees to pay to ASU an
         Option Fee of * payable upon execution of this  Agreement.  This fee is
         not refundable,  but if the OPTIONEE exercises its option, the OPTIONEE
         shall have the right,  in its sole and absolute  discretion,  to credit
         this Option Fee *.

- -------------
*     Omitted pursuant to request for confidential treatment.


4.       TECHNICAL ASSISTANCE & TECHNICAL ASSISTANCE FEE

         4.1.     ASU shall:

                  4.1.1.   Permit  representatives  from  OPTIONEE  (and, if the
                           parties enter a LICENSE AGREEMENT, representatives of
                           a person or entity to which  OPTIONEE  has  granted a
                           sub-license in accordance with the LICENSE AGREEMENT)
                           to visit the  facilities  of ASU for the  purpose  of
                           personally  observing  the  practice  and  testing of
                           TECHNOLOGY or the production of LICENSED PRODUCT, and

                  4.1.2.   Arrange  for  its   representatives   to  visit  such
                           facilities  as may be designated by OPTIONEE in order
                           to provide to OPTIONEE  (or,  if the parties  enter a
                           LICENSE  AGREEMENT,  any  person  or  entity to which
                           OPTIONEE has granted a sub-license in accordance with
                           the LICENSE  AGREEMENT) any technical  assistance and
                           advice  as  OPTIONEE  (or,  if the  parties  enter  a
                           LICENSE  AGREEMENT,  any  person  or  entity to which
                           OPTIONEE has granted a sub-license in accordance with
                           the  LICENSE  AGREEMENT)  may  reasonably  require in
                           connection    with   the    production,    packaging,
                           inspecting,  and  testing of the  TECHNOLOGY  and the
                           LICENSED PRODUCTS or the LICENSED METHODS.

         4.2.     OPTIONEE  shall  give  ASU  reasonable  prior  notice  of  any
                  intended  visits or required  assistance  as  contemplated  by
                  Sections  4.1.1.  and 4.1.2  above and the visits  shall be of
                  reasonable  duration  and  made  at  reasonable  times  during
                  regular business hours. OPTIONEE shall bear the entire cost of
                  the visits made  pursuant to  sub-paragraph  (4.1.1) and shall
                  promptly reimburse ASU for all reasonable  salary,  travel and
                  other expenses actually incurred by ASU's technical  personnel
                  in the course of the visits made to the facilities of OPTIONEE
                  (or any  person  or  entity to which  OPTIONEE  has  granted a
                  sub-license   in  accordance   with  the  LICENSE   AGREEMENT)
                  facilities pursuant to sub-paragraph (4.1.2).

         4.3.     In  consideration  of the  assistance to be provided by ASU as
                  contemplated  by this  Article  4,  OPTIONEE  shall pay ASU an
                  aggregate  fee of  $100,000  in addition to the option fee and
                  any future  license  issue fee,  and in  addition to any costs
                  paid or reimbursed  by OPTIONEE  pursuant to Section 4.2. This
                  fee is payable in two  installments of $50,000 each, the first
                  of which is due no later than one  hundred  eighty  (180) days
                  from the  EFFECTIVE  DATE of this  Agreement and the second of
                  which is due no later  than  one year and one  hundred  eighty
                  (180) days from the EFFECTIVE DATE of this Agreement.


5.       EXERCISE OF THE OPTION

         If OPTIONEE elects to exercise its option to a LICENSE  AGREEMENT under
         Section 2.1 hereof,  OPTIONEE  shall notify ASU in writing  pursuant to
         Article  15  (Notices)  prior  to the  expiration  of the  TERM of this
         Agreement.  Failure  of  OPTIONEE  to so notify  ASU shall be deemed an
         election by the OPTIONEE not to secure a license.


6.       TERMS OF PROPOSED LICENSE

         If OPTIONEE exercises its option to a LICENSE AGREEMENT as contemplated
         by Sections 2.1 and 5,  OPTIONEE and ASU shall  thereupon  negotiate in
         good  faith  and  shall use its best  efforts  to  arrive  at  mutually
         agreeable,  reasonable terms and conditions for the license.  The terms
         of the  License  Agreement  shall  include,  but not be limited to, the
         following provisions:

         6.1.     A worldwide,  exclusive  license to make,  have made,  market,
                  sell and otherwise  use the LICENSED  PRODUCTS and to practice
                  the LICENSED METHOD for the life of ASU's PATENT RIGHTS;

         6.2.     A right to sub-license ASU's PATENT RIGHTS worldwide;

         6.3.     A License Issue Fee payable as follows:
                  
                  6.3.1.     * payable upon execution of the LICENSE AGREEMENT.

                  6.3.2.     * payable upon each June 1 and December 1 following
                             the EFFECTIVE DATE  of the  LICENSE AGREEMENT until
                             all * payments have been made.

- -------------
*     Omitted pursuant to request for confidential treatment.



         6.4.     A royalty rate * of the NET SALES  of LICENSED PRODUCTS  and *
                  of the NET SALES by the sub-licensee of LICENSED PRODUCTS;

- -------------
*     Omitted pursuant to request for confidential treatment.


         6.5.     Minimum annual royalties in an amount equal to Twenty Thousand
                  US Dollars  ($20,000.00)  which will commence upon  OPTIONEE's
                  receipt  of  marketing  approval  from the US FDA or any other
                  European  regulatory  agency.  Such minimum  annual  royalties
                  shall be fully credited against earned royalties;

         6.6.     Technical assistance provided by ASU under terms substantially
                  similar to those  specified  in  Sections  4.1 and 4.2 of this
                  Agreement.

         6.7.     OPTIONEE acknowledges that ASU, for its own internal purposes,
                  may  allocate  the  Option Fee and  future  License  Issue Fee
                  payments  to ASU  Case  Nos.  224 and  700.  OPTIONEE  further
                  acknowledges that ASU will allocate future earned royalties to
                  LICENSED  PRODUCTS  according  to the patent  claims  that the
                  LICENSED PRODUCTS are sold under.  These allocations shall not
                  relieve  OPTIONEE from its obligations to make fee payments as
                  provided for under this Agreement.

         6.8.     All costs incurred by ASU from and after the effective date of
                  the LICENSE  AGREEMENT in filing,  prosecuting and maintaining
                  ASU's PATENT RIGHTS in the United  States and elsewhere  shall
                  be borne  by  OPTIONEE.  ASU  shall  prepare  and  deliver  to
                  OPTIONEE a report  setting forth the countries in which it has
                  filed and intends to file  applications  with respect to ASU's
                  PATENT  RIGHTS.  OPTIONEE  may ask ASU in writing to eliminate
                  certain  countries in which OPTIONEE intends not to market the
                  LICENSED  PRODUCTS.  OPTIONEE shall not be responsible for any
                  costs  incurred  by ASU for  the  eliminated  countries  after
                  receipt of such request by OPTIONEE.

         6.9.     The following  diligence  requirements will be included in the
                  LICENSE AGREEMENT and will have to be met by OPTIONEE:

                  6.9.1.   Filing for  approval by the US FDA or other  European
                           regulatory  agency to  commence at least one Phase II
                           clinical trial involving ASU's PATENT RIGHTS no later
                           than one (1)  year  from  the  EFFECTIVE  DATE of the
                           LICENSE AGREEMENT; and

                  6.9.2.   Filing for  approval by the US FDA or other  European
                           regulatory  agency to commence at least one Phase III
                           clinical trial involving ASU's PATENT RIGHTS no later
                           than one (1) year from the  completion  of a Phase II
                           clinical  trial or two (2) years from the  initiation
                           of a Phase II clinical trial  whichever is earlier in
                           time; and

                  6.9.3.   OPTIONEE  shall use its best  efforts to make a valid
                           application  for an NDA with the US FDA no later than
                           six months  after  completion  of the first Phase III
                           clinical trial.

                  6.9.4.   The clinical trials  referred to in Paragraphs  6.8.1
                           and 6.8.2 above shall be  conducted at the expense of
                           OPTIONEE or an AFFILIATE of OPTIONEE.

                  6.9.5.   The parties shall promptly  advise one another of any
                           confirmed instances, which come to their attention of
                           severe or  unexpected  reactions  from the use of any
                           LICENSED PRODUCT.

                  6.9.6.   In the event that OPTIONEE,  in its sole and absolute
                           discretion,  determines that (i) filing for US FDA or
                           European  regulatory approval is not warranted by the
                           clinical  testing  data with  respect to the clinical
                           trials  contemplated  by Sections 6.8.1 and/or 6.8.2,
                           or (ii) further  development of the TECHNOLOGY is not
                           economically  feasible,  OPTIONEE shall so notify ASU
                           and  provide  ASU  with a  report  setting  forth  in
                           reasonable  detail  the basis for its  determination,
                           whereupon  OPTIONEE may terminate this Agreement with
                           no further  obligation  to ASU except for the payment
                           of any fees which came due or royalties accrued prior
                           to the date of notification by OPTIONEE.

                  6.9.7.   Meet the  reasonably  anticipated  market  demand for
                           such  LICENSED  PRODUCTS  following  commencement  of
                           marketing   and  during  the  term  of  the   LICENSE
                           AGREEMENT.

         6.10     OPTIONEE  shall  agree to  manufacture  LICENSED  PRODUCTS  in
                  accordance with applicable US law.

         6.11     Indemnification  of ASU under terms  substantially  similar to
                  those set forth in Section 14 of this Agreement.

         6.12     Provisions  identical  to those  contained  in Sections  20.6,
                  20.7, 20.8 and 20.9 of this Agreement.

         6.13     In the event OPTIONEE and ASU are unable to conclude a LICENSE
                  AGREEMENT within six (6) months  ("NEGOTIATION  PERIOD") after
                  OPTIONEE notifies ASU pursuant to Section 5 of this Agreement,
                  then ASU shall be free to negotiate a license arrangement with
                  a third  party.  If,  for a maximum  of one (1) year after the
                  NEGOTIATION  PERIOD,  ASU and a third party agree on the terms
                  and  conditions of a license  agreement  with respect to ASU's
                  PATENT  RIGHTS,   and  such  terms  and  conditions  are  more
                  favorable to the third party than those that were last offered
                  to and not  accepted by  OPTIONEE,  then ASU shall give prompt
                  written notice (the "THIRD PARTY LICENSE  NOTICE") to OPTIONEE
                  of the terms and conditions and OPTIONEE shall have a right of
                  first  refusal  (exercisable  by written  notice to ASU within
                  thirty (30) days after  receipt by OPTIONEE of the THIRD PARTY
                  LICENSE NOTICE) to enter into a license  arrangement  with ASU
                  on the terms and  conditions  negotiated  between ASU and such
                  third party and set forth in the THIRD PARTY LICENSE NOTICE.


7.       DUE DILIGENCE REQUIRED UNDER THIS OPTION

         7.1.     OPTIONEE shall diligently  undertake such research and testing
                  of the TECHNOLOGY  and the LICENSED  PRODUCTS as is reasonably
                  necessary to evaluate its interest in exercising the option.

         7.2.     OPTIONEE shall finance the pre-clinical development, stability
                  testing,  batch manufacturing,  pre-clinical  toxicity studies
                  and    pharmacokinetics    of   Combretastatin    A-4   and/or
                  Combretastatin  A-4 Prodrug within the TERM of this Agreement.
                  OPTIONEE  further  agrees to use its best  efforts  to conduct
                  pre-clinical development,  stability testing, toxicity studies
                  and  pharmacokinetics  on all  other  compounds  within  ASU's
                  PATENT RIGHTS.

         7.3.     OPTIONEE agrees to initiate,  at its own expense, at least one
                  Phase  I  clinical  trial  using   Combretastatin  A-4  and/or
                  Combretastatin  A-4 Prodrug within the TERM of this Agreement.
                  Said  Phase I  clinical  trial  shall  be  independent  of any
                  clinical trials being conducted by the British Cancer Research
                  Campaign  (BCRC).  ASU  agrees  to  notify  the  BCRC  of  the
                  existence  of this  Agreement  and to  request  that  the BCRC
                  coordinate  its clinical  trial activity with that of OPTIONEE
                  so that any BCRC clinical  trial  activity does not contravene
                  or conflict with OPTIONEE's rights under this Agreement or the
                  LICENSE AGREEMENT, if one is entered.

         7.4.     OPTIONEE shall provide ASU with four progress reports covering
                  its  activities  relating  to the  development  and testing of
                  Licensed  Products as described in Paragraph  7.2 in six month
                  intervals,  the first such progress  report to be delivered on
                  or before the date that is six months  following the EFFECTIVE
                  DATE of this Agreement.

         7.5.     The parties shall promptly advise one another of any confirmed
                  instances,   which  come  to  their  attention  of  severe  or
                  unexpected reactions from the use of any LICENSED PRODUCT.

         7.6.     OPTIONEE shall be entitled to exercise  prudent and reasonable
                  business  judgment  in meeting its due  diligence  obligations
                  hereunder.  If OPTIONEE  determines  in its sole and  absolute
                  discretion  that  continuation  of any further  development or
                  clinical testing of the TECHNOLOGY or LICENSED PRODUCTS is not
                  warranted  by  available  testing  data,  or  otherwise is not
                  economically  feasible the  OPTIONEEE  shall so notify ASU and
                  provide ASU with a report  setting forth in reasonable  detail
                  the  basis  for  its  determination,  whereupon  OPTIONEE  may
                  terminate  this  Agreement  with no further  obligation to ASU
                  except for the payment of any fees which came due or royalties
                  accrued prior to the date of notification by OPTIONEE.

         7.7.     Promptly  after the EFFECTIVE  DATE of this Agreement and from
                  time to time  during  the TERM of this  Agreement,  and to the
                  extent that ASU has all necessary legal and contractual rights
                  to do  so,  ASU  shall  disclose  to  OPTIONEE  all  technical
                  information and KNOW-HOW  pertaining to LICENSED  PRODUCT that
                  is  known  by ASU  and  with  respect  to  which  ASU is  then
                  empowered  to grant the  rights  granted to  OPTIONEE  in this
                  Agreement. ASU shall from time to time during the TERM of this
                  Agreement disclose to OPTIONEE all further necessary technical
                  information  and  KNOW-HOW  that ASU may  acquire  or  develop
                  during  the  TERM  of  this   Agreement   pertaining   to  the
                  TECHNOLOGY.


8.       PATENT PROSECUTION AND MAINTENANCE

         8.1.     ASU shall  diligently  prosecute  and maintain the patents and
                  patent  applications  identified as ASU's PATENT  RIGHTS.  All
                  domestic and foreign patent applications shall be filed in the
                  name of ASU and shall be held in the name of ASU.

         8.2.     Upon  request by  OPTIONEE  ASU shall  provide  OPTIONEE  with
                  copies of all relevant  documentation  so that OPTIONEE may be
                  informed  and  apprised  of the  continuing  prosecution,  and
                  OPTIONEE agrees to keep this documentation confidential.

         8.3.     ASU  shall use all  reasonable  efforts  to amend  any  patent
                  application  to  include  claims  requested  by  OPTIONEE  and
                  required to protect the products contemplated to be sold under
                  the LICENSE AGREEMENT.


9.       LIFE OF THE AGREEMENT

         9.1.     Unless  earlier  terminated  by operation of law or by acts of
                  the parties in  accordance  with the terms of this  Agreement,
                  this  Agreement  shall be in full  force and  effect  from the
                  Effective  Date to and  including  the  last  date of the TERM
                  specified in Section 1.10.

         9.2.     Any  termination of this Agreement shall not affect the rights
                  and obligations set forth in the following Articles:

                  Article 12        Use of Names and Trademarks
                  Article 14        Indemnification
                  Article 17        Late Payments

         9.3.     Any termination of this Agreement  shall not relieve  OPTIONEE
                  of its  obligation to pay any monies  accrued and owing at the
                  time of such  termination and shall not impair any ASU's right
                  to collect any monies then due and owed to it.


10.      TERMINATION BY ASU

         In the event OPTIONEE violates or fails to perform any material term or
         covenant of this Agreement, ASU may give written notice of such default
         (Notice of Default) to OPTIONEE.  If OPTIONEE  should fail to cure such
         default (or shall have failed to commence steps reasonably  designed to
         cure such default)  within  thirty (30) days of the  effective  date of
         such notice,  ASU shall have the right to terminate this Agreement by a
         second written notice (Notice of Termination) to OPTIONEE.  If a Notice
         of Termination is sent to OPTIONEE this Agreement  shall  automatically
         terminate on the effective  date of such Notice of  Termination.  These
         notices shall be subject to Article 15 (Notices).


11.      TERMINATION BY OPTIONEE

         OPTIONEE  shall  have the  right  at any time and from  time to time to
         terminate  this Agreement in whole or as to any portion of ASU's PATENT
         RIGHTS by giving  notice in writing to ASU.  Such notice shall be given
         in  accordance  with Article 15 (Notices)  and such  termination  shall
         effective  as of the date that is thirty  (30) days from the  effective
         date of such  notice  or such  other  date as may be set  forth  in the
         notice of termination, whichever is later.


<PAGE>
12.      USE OF NAMES AND TRADEMARKS

         12.1.    Nothing  contained  in this  Agreement  shall be  construed as
                  conferring  any  right to use in  advertising,  publicity,  or
                  other promotional  activities any name, trade name, trademark,
                  service  mark or other  designation  of  either  party  hereto
                  (including  contraction,  abbreviation or simulation of any of
                  the  foregoing).  Unless  required by law, the use of the name
                  "ASU" or  "Arizona  State  University"  or  "Arizona  Board of
                  Regents" is expressly prohibited.

         12.2.    Notwithstanding   Section  12.1,   above,   OPTIONEE  and  any
                  AFFILIATE of OPTIONEE shall have the right to disclose  and/or
                  to  file  as an  exhibit  to  filings  required  to be made by
                  OPTIONEE or any  AFFILIATE of OPTIONEE  with the  Securities &
                  Exchange  Commission the existence and terms of this Agreement
                  and the proposed LICENSE AGREEMENT.

         12.3.    It is  understood  that ASU  shall be free to  release  to the
                  inventors and senior administrative  officials employed by ASU
                  the terms and conditions of this Agreement upon their request.
                  It is further  understood  that should a third  party  inquire
                  whether a license to ASU's PATENT RIGHTS is available, ASU may
                  disclose the existence and the TERM of this  Agreement to such
                  third party,  but shall not disclose the name of the OPTIONEE,
                  except where ASU is required to release such information under
                  either the Arizona Public Records Act or other applicable law.


13.      LIMITED WARRANTY

         13.1.    ASU  represents  and  warrants  to  OPTIONEE  that  it has the
                  corporate  power and legal right to execute  and deliver  this
                  Agreement and the LICENSE AGREEMENT, if one is negotiated, and
                  to perform its obligations. The execution and delivery of this
                  Agreement by ASU does not violate any (i)  provision of law or
                  regulation  applicable  to ASU,  or (ii)  other  agreement  or
                  arrangement,  whether written or oral, to which ASU is a party
                  or by  which  it or its  properties  are  bound.  ASU  has not
                  received any notice alleging that any of the patents  included
                  in  ASU's  PATENT  RIGHTS  infringe  on the  patents  or other
                  proprietary  technology of a third party. To the best of ASU's
                  knowledge,  the ASU's  PATENT  RIGHTS do not  infringe  on the
                  patents or other proprietary  technology of a third party, nor
                  does ASU know of any basis for such a claim of infringement.

         13.2.    This  Agreement  and the  associated  TECHNOLOGY  are provided
                  without warranty, merchantability, or fitness for a particular
                  purpose or any other warranty,  express or implied. Subject to
                  Section 13.1, ASU makes no representation or warranty that the
                  LICENSED  PRODUCTS or LICENSED  METHODS  will not infringe any
                  patent or other proprietary right.

         13.3.    In no event will ASU be liable for any incidental,  special or
                  consequential  damages  in  connection  with  the  use  of the
                  TECHNOLOGY  or  LICENSED  PRODUCTS  except to the extent  such
                  damages are the result of ASU's  willful  misconduct  or gross
                  negligence.

         13.4.    Nothing in this Agreement shall be construed as:

                  13.4.1.  Subject to Section 13.1, a warranty or representation
                           by ASU as to  the  validity  or  scope  of any  ASU's
                           PATENT RIGHTS; or

                  13.4.2.  Subject to Section 13.1, a warranty or representation
                           that anything made, used, sold or otherwise  disposed
                           of under any  license  of ASU's  PATENT  RIGHTS is or
                           will be free from  infringement  of  patents of third
                           parties; or

                  13.4.3.  An obligation to bring or prosecute  actions or suits
                           against  third   parties  for  patent   infringement,
                           provided,  however,  that if ASU fails or declines to
                           bring or prosecute any such action or suit,  OPTIONEE
                           has the right to undertake such action or suit in its
                           own name; or

                  13.4.4.  Conferring by implication,  estoppel or otherwise any
                           license or rights under any patents of ASU other than
                           ASU's  PATENT   RIGHTS  set  forth  in  Section  1.1,
                           regardless  of whether  such  patents are dominant or
                           subordinate to ASU's Patent Rights; or

                  13.4.5.  An obligation to furnish any know-how not included in
                           ASU's PATENT RIGHTS.


14.      INDEMNIFICATION

         14.1.    OPTIONEE  agrees to  indemnify,  hold harmless and defend ASU,
                  its  officers,  employees  and  agents;  the  sponsors  of the
                  research that lead to the TECHNOLOGY;  and the INVENTOR of the
                  patents and patent application included in ASU's PATENT RIGHTS
                  (collectively,  the  INDEMNITEES)  against any and all claims,
                  suits,  losses,  damages,  costs, fees, and expenses resulting
                  from or arising out of exercise of this  Agreement;  provided,
                  however,  that OPTIONEE  shall have no obligation to indemnify
                  any INDEMNITEE for the negligence or willful  misconduct of or
                  breach of  representation  contained in this Agreement by such
                  INDEMNITEE.

         14.2.    ASU shall promptly  notify OPTIONEE in writing of any claim or
                  suit  brought  against  ASU in respect of which ASU intends to
                  invoke the  provisions of this Article 14.  OPTIONEE will keep
                  ASU  informed on a current  basis of its defense of any claims
                  pursuant to this Article 14.



15.      NOTICES

         Any payment,  notice or other communication required or permitted to be
         made or given to  either  party  pursuant  to this  Agreement  shall be
         deemed sufficiently made or given on the date of mailing if sent to the
         party by certified or registered mail, postage prepaid, addressed to it
         at its address  set forth below or to such other  address as shall have
         been  designated  by  written  notice  given  in  accordance  with  the
         provisions of this Section 14.




         In the case of ASU:
         ------------------

         Office of Technology Collaborations & Licensing
         Office of the Vice Provost for Research
         Arizona State University
         P. O. Box 873511
         Tempe, AZ  85287-3511


         In the case of OPTIONEE:           COPY TO:
         -----------------------            ------- 

         OXiGENE Europe AB                  OXiGENE, Inc.
         IDEON Research Park                110 East 59th Street
         Scheelevagen 17                    New York, NY  10022
         S-223  70  Lund,  SWEDEN           Attn.:   Vice President

         Any notice required or permitted to be given pursuant to this Agreement
         shall be deemed  effective 10 days following  receipt of a notice given
         in accordance with the provisions of this Section 15.


16.      ASSIGNABILITY

         This  Agreement is binding upon and shall inure to the benefits of ASU,
         its  successors  and  assigns,  but shall be personal  to OPTIONEE  and
         assignable  by  OPTIONEE  only with the prior  written  consent of ASU,
         which consent shall not be  unreasonably  withheld,  provided,  however
         that OPTIONEE may assign this  Agreement to an AFFILIATE  without ASU's
         consent but with notice to ASU in accordance with Section 15.


17.      LATE PAYMENTS

         In the event fees or payments  contemplated  by this  Agreement are not
         received by ASU when due,  OPTIONEE agrees to pay ASU interest  charges
         at a rate per  annum of  either  a) Ten  (10)  percent,  or b) five (5)
         percent plus the rate of interest which is charged by the San Francisco
         Federal Reserve Bank to member banks twenty-five (25) days prior to the
         date the payment was due, whichever is greater.  Such interest shall be
         calculated from the date payment was due until actually received by ASU


18.      WAIVER

         It is agreed  that no waiver by either  party  hereto of any  breach or
         default of any of the covenants or agreements herein set forth shall be
         deemed a waiver as to any subsequent and/or similar breach or default.


19.      GOVERNING LAWS

         This Agreement  shall be interpreted  and construed in accordance  with
         the laws of the State of Arizona.


20.      MISCELLANEOUS

         20.1.    The  headings  of  the  several   sections  are  inserted  for
                  convenience  of  reference  only and are not  intended to be a
                  part of or to affect  the  meaning or  interpretation  of this
                  Agreement.

         20.2.    This  Agreement  will not be binding upon the parties until it
                  has been signed  below on behalf of each party;  it shall then
                  be  effective  as of  the  EFFECTIVE  DATE.  No  amendment  or
                  modification shall be valid or binding upon the parties unless
                  made in writing and signed by each party.

         20.3.    In case  any of the  provisions  contained  in this  Agreement
                  shall be held to be invalid,  illegal or  unenforceable in any
                  respect,  such  invalidity,   illegality  or  unenforceability
                  shall  not  affect  any  other  provisions  hereof,  but  this
                  Agreement  shall be construed as if such invalid or illegal or
                  unenforceable provisions had never been contained herein.

         20.4.    This  Agreement  embodies  the  entire  understanding  of  the
                  parties  and  shall  supersede  all  previous  communications,
                  representations,  or undertakings,  whether verbal or written,
                  between the parties relating to its subject matter.

         20.5.    OPTIONEE  agrees that the  personnel of OPTIONEE  will not for
                  any purpose be considered  employees or agents of ASU and that
                  OPTIONEE  assumes full  responsibility  for the actions of its
                  personnel while performing services under this Agreement,  and
                  shall be  solely  responsible  for  their  supervision,  daily
                  direction   and   control,   payment   of  salary   (including
                  withholding  income  taxes  and  social  security),   worker's
                  compensation  and  disability  benefits.  ASU agrees  that the
                  personnel  of ASU  will  not for  any  purpose  be  considered
                  employees  or agents of  OPTIONEE  and that ASU  assumes  full
                  responsibility   for  the  actions  of  its  personnel   while
                  performing services under this Agreement,  and shall be solely
                  responsible  for  their   supervision,   daily  direction  and
                  control, payment of salary (including withholding income taxes
                  and social  security),  worker's  compensation  and disability
                  benefits.

         20.6.    The  parties  agree to comply  with all  applicable  state and
                  federal laws,  rules,  regulations and executive  orders as to
                  equal   employment    opportunity,    nondiscrimination    and
                  affirmative action.

         20.7.    This Agreement is subject to Section  38-511,  Arizona Revised
                  Statutes.

         20.8.    In the event of a dispute  under this  Agreement,  the parties
                  agree  to use  arbitration  if,  and then  only to the  extent
                  required under Sections  12-1518 and 12-133,  Arizona  Revised
                  Statutes.

         20.9.    To the extent  required  by Section  35-214,  Arizona  Revised
                  Statutes,  OPTIONEE  agrees to  retain  all  books,  accounts,
                  reports,  files and other records of OPTIONEE relating to this
                  Agreement and make those records  available at all  reasonable
                  times, upon prior written notice,  for inspection and audit by
                  ASU or the Auditor  General of the State of Arizona,  or their
                  agents, during the terms of and for a period of five (5) years
                  after the completion of this  Agreement.  The records shall be
                  provided  at Arizona  State  University,  Tempe,  Arizona,  or
                  another location  designated by ASU upon reasonable  notice to
                  OPTIONEE.


IN WITNESS  WHEREOF,  both ASU and OPTIONEE  have executed  this  Agreement,  in
duplicate originals,  by their respective officers hereunto duly authorized,  as
of the EFFECTIVE DATE.

ARIZONA BOARD OF REGENTS                       OXiGENE Europe AB
a body corporate of the State of Arizona
acting for                                     ("OPTIONEE")
ARIZONA STATE UNIVERSITY
("ASU")

BY:-----------------------                     BY:----------------------


                                               BY:----------------------





                                  COPLEY PLACE
                              BOSTON, MASSACHUSETTS
                                  OFFICE LEASE

                                       to

                                  OXIGENE, Inc.













                               FROM THE OFFICE OF:

                             Goulston & Storrs, P.C.
                               400 Atlantic Avenue
                        Boston, Massachusetts 02110-3333



<PAGE>



                                  
                                  OFFICE LEASE
                                  COPLEY PLACE
                              BOSTON, MASSACHUSETTS


                                TABLE OF CONTENTS

1.     BASIC DATA

2.     HABENDUM; TERM

3.     POSSESSION

4.     BASE RENT

5.     ADDITIONAL RENT
       A.     Definitions
              (i)   Base Year
              (ii)  Base Year Operating Expenses
              (iii) Calendar Year
              (iv)  Tenants Proportionate Share
              (v)   Taxes
              (vi)  Operating Expenses
       B.     Expense Adjustment

6.     USE OF PREMISES

7.     CONDITION OF PREMISES

8.     SERVICES
       A.     List of Services
       B.     Billing for Electricity
       C.     Interruption of Services
       D.     Charges for Services
       E.     Energy Conservation

9.     REPAIRS; HAZARDOUS MATERIALS

10.    ADDITIONS AND ALTERATIONS

11.    COVENANT AGAINST LIENS

12.    INSURANCE
       A.     Waiver of Subrogation
       B.     Coverage
       C.     Avoid Action Increasing Rates

13.    FIRE OR CASUALTY

14.    WAIVER OF CLAIMS - INDEMNIFICATION

15.    NONWAIVER

16.    CONDEMNATION

17.    ASSIGNMENT AND SUBLETTING

18.    SURRENDER OF POSSESSION

19.    HOLDING OVER

20.    ESTOPPEL CERTIFICATE

21.    SUBORDINATION

22.    CERTAIN RIGHTS RESERVED BY LANDLORD

23.    RULES AND REGULATIONS

24.    LANDLORD'S REMEDIES

25.    EXPENSES OF ENFORCEMENT

26.    COVENANT OF QUIET ENJOYMENT

27.    SECURITY DEPOSIT

28.    REAL ESTATE BROKER

29.    UNDERLYING LEASES

30.    NOTICE TO MORTGAGEE AND GROUND LESSOR

31.    ASSIGNMENT OF RENTS

32.    PERSONAL PROPERTY TAXES

33.    MISCELLANEOUS
       A.     Rights Cumulative
       B.     Interest
       C.     Terms
       D.     Binding Effect
       E.     Lease Contains All Terms
       F.     Delivery for Examination
       G.     No Air Rights
       H.     Modification of Lease
       I.     Intentionally Deleted
       J.     Transfer of Landlord's Interest
       K.     Landlord's Title
       L.     Prohibition Against Recording
       M.     Captions
       N.     Covenants and Condition
       O.     Only Landlord/Tenant Relationship
       P.     Application of Payments
       Q.     Definition of Landlord
       R.     Time of Essence
       S.     Governing Law
       T.     Partial Invalidity
       U.     Size of Premises

34.    NOTICES

35.    LIMITATION ON LIABILITY

36.    LANDLORD'S DESIGNATED AGENT

37.    COMMENCEMENT AND TERMINATION DATES

38.    CANCELLATION OPTION

39.    CONSTRUCTION

40.    PARKING


         Exhibit A         Plan of Premises
         Exhibit B         Work Letter
         Exhibit C         Rules and Regulations
         Exhibit D         Cleaning Specifications
         Exhibit E         Measurement Standards
         Exhibit F         Holidays
         Exhibit G         Affirmative Action and Resident Preference Goals



<PAGE>


                                  OFFICE LEASE
                                  COPLEY PLACE
                              BOSTON, MASSACHUSETTS

          THIS INSTRUMENT is an Agreement of Lease in which the Landlord and the
Tenant are the  parties  hereinafter  named,  and which  relates to space in the
Office Section of Copley Place (hereinafter referred to as the "Office Section")
located at 100 Huntington  Avenue,  Boston,  Suffolk County,  Massachusetts (the
project known as Copley Place,  including without  limitation the hotel portions
thereof,  plazas,  pedestrian bridges, service areas and all other common areas,
together with all present and future  easements,  additions,  improvements,  air
rights and other rights appurtenant  thereto, is hereinafter  referred to as the
"Property"),  subject to the covenants, terms, provisions and conditions of this
Lease.  The "Office Section" means that portion of the building (the "Building")
located at the aforesaid  address  consisting of seven (7) levels of office area
containing  approximately  845,000  square  feet of  rentable  floor  area.  The
Building  also  contains  retail   shopping,   restaurant,   parking  and  other
facilities,  which are not included within the Office Section. The Building does
not, however,  include the hotel or residential  portions of the Property or the
pedestrian bridges. In consideration  thereof,  Landlord and Tenant covenant and
agree as follows:


1.  BASIC DATA.
- --  -----------
                  The following  sets forth basic data and,  where  appropriate,
constitutes definitions of the terms hereinafter listed.

Date:                    February 26, 1997

Landlord:                COPLEY PLACE ASSOCIATES NOMINEE
                         CORPORATION, a Delaware nominee corporation

Present Mailing Address 
 of Landlord:            c/o Urban Retail Properties
                         Suite 600
                         Four Copley Place
                         Boston, Massachusetts 02116

Tenant:                  OXIGENE, Inc., a Delaware corporation

Present Mailing Address
 of Tenant:              OXIGENE, Inc.
                         110 East 59th Street, 29th Floor
                         New York, NY 10022

Commencement             Date:  Subject  to  Paragraph  37 hereof,  the  earlier
                         of  May 1, 1997, or the date of  Substantial Completion
                         of the  Premises  (as defined in the Work  Letter  (the
                         "Work Letter") attached hereto as Exhibit B) whichever
                         is the first to occur.

Termination Date:        Subject to Paragraph 37 hereof, five (5) years after
                         the Commencement Date, unless sooner terminated as
                         provided in this Lease.

Base Rent:               At the rate of Fifty-Nine  Thousand Three Hundred
                         Fifty-Three and 00/100 Dollars  ($59,353.00) per annum,
                         in equal  monthly  installments  of Four  Thousand Nine
                         Hundred   Forty-Six  and  08/100  Dollars   ($4,946.08)
                         (computed  on the basis of $30.50 per  rentable  square
                         foot per annum at 1,946 rentable square feet of space).
                         (See Paragraph 4)

Base Year:               The Calendar Year 1997.

Base Year Operating
 Expenses:               The amount of Operating Expenses incurred with respect
                          to the Base Year.

Tenant's Proportionate
 Share:                  0.24% (computed on the basis of 95% occupancy).

Use:                     General office purposes including a kitchenette for 
                         employee use only.

Premises:                That portion of the Office  Section  designated on
                         the plan  attached  hereto as  Exhibit  A and  commonly
                         described as approximately  1,946 rentable square feet,
                         consisting  of a  portion  of the  Sixth  Floor  of One
                         Copley  Place.  Excepted and excluded from the Premises
                         are the roof or  ceiling,  the floor and all  perimeter
                         walls  of  the  Premises,  except  the  inner  surfaces
                         thereof,  but the entry doors to the  Premises  are not
                         excluded  from the  Premises and are a part thereof for
                         all purposes;  and Tenant  agrees that  Landlord  shall
                         have the  right to place in the  Premises  (but in such
                         manner  as to reduce  to a  minimum  interference  with
                         Tenant's use of the  Premises  and  properly  enclosed)
                         utility  lines,  pipes and the like, to serve  premises
                         other than the  Premises,  and to replace and  maintain
                         and repair such utility lines,  pipes and the like, in,
                         over and upon the Premises.

Common Areas:            Those  portions of the Property not leased to
                         any tenant, but for the benefit of the Property and its
                         tenants,  such as landscaped areas,  malls,  pedestrian
                         walkways and bridges, restrooms,  service areas and the
                         like.

Guarantor of 
 Tenant's Obligations:    None.

Security  Deposit:       Seventy  Thousand  and  00/100  Dollars
                         ($70,000)  reduced  by  Fourteen  Thousand  and  00/100
                         Dollars   ($14,000)   on   each   anniversary   of  the
                         Commencement Date.

Broker:                  Collectively,  Thompson Doyle & Company and Whittier
                         Partners


2.   HABENDUM; TERM.
- --   ---------------

          A. To have and to hold the  Premises  for the term  commencing  on the
Commencement  Date and ending on the Termination  Date, and the right to use the
Common Areas during such term in common with others entitled  thereto.  The Term
of this Lease  (hereinafter  referred  to as the "Term")  shall  commence on the
Commencement  Date  specified in  Paragraph 1 hereof and end on the  Termination
Date  specified  in Paragraph I hereof,  unless  sooner  terminated  as provided
herein.

          B. During the first month of the Term,  the parties  shall  execute an
agreement  setting forth the  Commencement  Date and the Termination Date of the
Lease.



<PAGE>
3.  POSSESSION.
- --  -----------

          A. In the event the Premises shall not be substantially  completed and
ready  for  occupancy  on July 1,  1997,  then  Tenant  shall  have the  option,
effective as of July 1, 1997, to cancel this Lease and the parties shall have no
further  obligations  hereunder  and the terms of this  Lease  shall be null and
void.  The Premises shall be  substantially  complete and ready for occupancy if
the Premises satisfy the requirements for Substantial Completion as set forth in
Exhibit B attached hereto.

          B. If Tenant shall enter the Premises or any part thereof prior to the
Commencement  Date (which  Tenant may not do without  Landlord's  prior  written
consent),  such entry shall be at Tenant's sole risk and without interference to
any work then being  performed in the  Building by Landlord or other  tenants or
occupants,  and all of the  covenants  and  conditions  of this  Lease  shall be
binding  upon the  parties  hereto  with  respect  to such  whole or part of the
Premises.

          C. Except as set forth in  Paragraph 37 hereof,  the occurrence of any
of the events described in this Paragraph 3 shall not be deemed to accelerate or
defer the Termination Date.


4.  BASE RENT.
- --  ----------

          Tenant shall pay to Landlord or  Landlord's  agent  without  notice or
demand at the present  mailing  address of  Landlord,  or at such other place as
Landlord may from time to time designate in writing,  in coin or currency which,
at the time of  payment,  is legal  tender for  private  or public  debts in the
United States of America,  the Base Rent  specified in Paragraph I hereof in the
equal  monthly  installments  specified  in  Paragraph I hereof in advance on or
before  the first day of each and  every  month  during  the Term,  without  any
abatement,  counterclaim,  set-off or deduction whatsoever.  Notwithstanding the
foregoing  sentence,  Tenant shall pay the first full monthly installment of the
Base Rent at the time of execution of this Lease.  If the Term  commences  other
than on the  first  day of a month  or ends  other  than on the  last day of the
month,  the Base Rent for such month shall be prorated.  The prorated  Base Rent
for the  portion of the month in which the Term  commences  shall be paid on the
first day of the first full month during the Term.


5.  ADDITIONAL RENT.
- --  ----------------

          In addition to paying the Base Rent  specified  in Paragraph 4 hereof,
Tenant  shall  pay as  "Additional  Rent" the  amounts  determined  pursuant  to
Sub-Paragraphs  B through C,  inclusive,  of this Paragraph 5. The Base Rent and
the Additional Rent are sometimes herein collectively referred to as the "Rent".
All amounts due under this  Paragraph 5 as Additional  Rent shall be payable for
the same  periods  and in the same  manner,  time  and  place as the Base  Rent,
without any abatement,  counterclaim,  set-off or deduction whatsoever.  Without
limitation on other  obligations of Tenant which shall survive the expiration of
the Term, the  obligations of Tenant to pay the Additional  Rent provided for in
this  Paragraph 5 shall  survive  the  expiration  of the Term.  For any partial
Calendar  Year,  Tenant  shall be  obligated to pay only a pro rata share of the
Additional  Rent,  based on the number of days of the Term  falling  within such
Calendar Year.


<PAGE>
               A.   Definitions. As used in this Paragraph 5, the terms:

                    (i) "Base Year" shall  mean  the calendar  year specified in
               Paragraph I hereof.

                    (ii) "Base  Year  Operating  Expenses"  shall  mean  the sum
               specified in Paragraph 1 hereof.

                    (iii)  "Calendar  Year" shall  mean  each  calendar  year in
               which  any  part of  the  Term  falls,  through and including the
               year in which the Term expires.

                    (iv) "Tenants Proportionate Share" shall mean the percentage
               specified in Paragraph I hereof, being  the percentage calculated
               by  dividing  the  rentable  area  contained  in  the Premises by
               802,750 (being 95% of the rentable square foot area of the Office
               Section), such rentable area shall be determined by Landlord on a
               uniform basis for the tenants of the Office Section.

                    (v)  "Taxes"   shall  mean   all  real  estate   taxes   and
               assessments,  special or  otherwise,  levied or assessed  upon or
               with respect to the Building or any part thereof and Common Areas
               which  Landlord  determines  in its sole  judgment  to be for the
               benefit of the  Building  and ad valorem  taxes for any  personal
               property of Landlord  used in  connection  therewith.  Should the
               Commonwealth  of Massachusetts,   or  any  political  subdivision
               thereof, or any other governmental  authority having jurisdiction
               over the Building, (a) impose a tax, assessment,  charge  or fee,
               which Landlord  shall be required to pay, by way of  substitution
               for or as a  supplement  to such real estate taxes and ad valorem
               personal property taxes, or (b) impose an income or franchise tax
               or a tax on rents in substitution for or as a supplement to a tax
               levied  against  the  Building  or any part  thereof  and/or  the
               personal  property  used in  connection  with the Building or any
               part  thereof,  all  such  taxes,  assessments,  fees or  charges
               (hereinafter  defined as "in lieu of  taxes")  shall be deemed to
               constitute Taxes hereunder. Taxes shall also include, in the year
               paid,  all fees and costs  incurred  by  Landlord  in  seeking to
               obtain a reduction  of, or a limit on the increase in, any Taxes,
               regardless  of whether any  reduction or  limitation is obtained.
               Except as hereinabove provided with regard to "in lieu of taxes",
               Taxes  shall not  include any  inheritance,  estate,  succession,
               transfer, gift, franchise, net income or capital stock tax.

     (vi) "Operating Expenses" shall mean (a) Taxes and (b) all expenses,  costs
and  disbursements  of every kind and  nature,  paid or  incurred by Landlord in
operating,  owning,  managing,  leasing,  repairing and  maintaining  the Office
Section,  the  Building,  the  Property and their  appurtenances  as such Taxes,
expenses,  costs and  disbursements  are allocated to the Office  Section by the
Landlord  in its  sole  judgment  or as the same are  incurred  directly  in the
operation of Office  Section,  including  but without  limitation:  premiums for
fire, casualty,  liability and such other insurance as Landlord may from time to
     time maintain; security expenses; compensation and all fringe benefits,
workmen's compensation insurance premiums and payroll taxes paid by Landlord to,
for or with  respect  to all  persons  engaged  in  operating,  maintaining,  or
cleaning;  steam, water,  sewer,  electric,  gas,  telephone,  and other utility
charges not billed  directly to tenants by  Landlord  or the  utility;  expenses
incurred in connection with the central plant  furnishing  heating,  ventilating
and air conditioning to the Office Section (and to the Building and the Property
where and to the  extent the  expenses  of the  Building  and the  Property  are
otherwise  allocable to the Office  Section),  which  expenses may include a fee
paid to the operator of such  central  plant;  costs of  lighting,  ventilating,
(including  maintaining  and  repairing  ventilating  fans and fan rooms) making
routine repairs to and maintenance of underground roadways (and the access ramps
servicing  such  roadways)  and railroad  platforms  and railroad  rights of way
(including  track);  costs of repairing and maintaining fire protection  systems
relating to the  underground  roadways,  access  ramps,  railroad  platforms and
railroad  rights of way;  costs of building and cleaning  supplies and equipment
(including  rental);  cost of  maintenance,  cleaning and repairs;  cost of snow
plowing or removal,  or both,  and care of interior  and  exterior  landscaping;
payments to independent  contractors  under  contracts for cleaning,  operating,
management,  maintenance  and repair  (which  payments may be to  affiliates  of
Landlord);  all other  expenses  paid in  connection  with  cleaning,  operating
management,  maintenance  and  repair,  including  reasonable  reserves  for the
replacement of capital  improvements  and equipment  contained in and/or used in
connection with operations;  costs of any capital  improvements  completed after
the  Base  Year as  reasonably  amortized  by  Landlord,  with  interest  on the
unamortized  amount at the rate of the  greater  of (i) 12% per annum or (ii) 2%
per annum above the base rate of interest charged from time to time by The First
National  Bank of  Boston  (but in no  event at a rate  which  is more  than the
highest  lawful rate allowable in The  Commonwealth  of  Massachusetts),  to the
extent the cost of the particular capital  improvement exceeds the amount of the
unused  reserve,  if any, for the  replacement  thereof  previously  included in
Operating  Expenses  and  insurance  proceeds,  if any,  received by Landlord on
account of damage to the  particular  capital  improvement;  increases in ground
rent or similar payments, if any (determined for the applicable Calendar Year on
an accrual basis). Operating Expenses shall not, however, include the following:

               a.   Costs  of  alterations  of  any  tenant's   premises  for  a
                    particular  tenant  and not for the  benefit  of the  Office
                    Section or any group of tenants therein;

               b.   Principal or interest payments on loans secured by mortgages
                    or trust deeds on the Building and/or on the Property;

               c.   depreciation, except as otherwise provided herein;

               d.   interest  and  amortization  of any  superior  mortgages  or
                    increases in interest or debt on any mortgages or changes in
                    deeds of trust or any other debt for borrowed money;

               e.   leasehold  improvements  made  for  tenants  of  the  Office
                    Section or the Building;

               f.   brokerage commissions;

               g.   refinancing costs;

               h.   the   costs  of  a   capital   nature,   including   capital
                    improvements, capital repairs, capital equipment and capital
                    tools as determined in accordance  with  generally  accepted
                    accounting principles; leasing commissions;

               j.   fines  and/or   penalties   asserted  against  Landlord  for
                    untimely payment of monies due;

               k.   the costs  including  permit,  license and  inspection  fees
                    incurred in renovating or otherwise improving or decorating,
                    painting  or  redecorating  vacant  space or  space  for the
                    tenants  or other  occupants  including  the costs of tenant
                    installations  incurred in connection  with preparing  space
                    for a new tenant;

               1.   any expense  for which  Landlord  is  otherwise  compensated
                    through  the   proceeds   of   insurance   or   condemnation
                    proceedings;

               m.   legal fees incurred in connection  with any  negotiation of,
                    or disputes  arising out of, any lease in the Office Section
                    of  the  Building   (except  for  legal  fees   incurred  in
                    connection with the Sublease (as hereinafter defined));

               n.   costs of  special  services  rendered  to any  tenant in the
                    Office  Section  or the  Building  which  are not  generally
                    available  to other  tenants  in the  Office  Section or the
                    Building;

               o.   the  Landlord's  cost of any service  sold to the tenants or
                    other  occupants  for which the  Landlord  is entitled to be
                    reimbursed for an additional charge or rental over and above
                    the basic rent and  escalation  payable under the lease with
                    that tenant or occupant;

               p.   the costs of services or improvements which are not provided
                    to  Tenant  but  which  are  provided  to other  tenants  or
                    occupants of the Office Section or the Building;

               q.   the costs  incurred due to the  violation by Landlord of any
                    of the terms and  conditions of the lease or any other lease
                    related to the Office  Section or the  Building  (except for
                    costs incurred in connection with the Sublease);

               r.   the overhead and profit  increments  paid to subsidiaries or
                    affiliates of Landlord for  management or other  services to
                    the  Building or Building  Project or for  supplies or other
                    materials  to the  extent  that  the  cost of the  services,
                    supplies, or materials exceed the costs that would have been
                    paid had the services,  supplies or materials  been provided
                    by unaffiliated parties on a competitive basis; and

               s.   the  compensation  paid  to  clerks,  attendants,  or  other
                    persons in commercial concessions operated by the Landlord.

          If less than 95% of the Office Section's rentable area shall have been
occupied by tenant(s) at any time during any Calendar Year,  Operating  Expenses
shall be  determined  for such  Calendar  Year to be an amount equal to the like
expense which would  normally be expected to be incurred had such occupancy been
95% throughout such Calendar Year.

          B.  Expense  Adjustment.  Tenant  shall pay to Landlord or  Landlord's
agent as Additional Rent, a sum ("Expense  Adjustment Amount") equal to Tenant's
Proportionate  Share of the amount by which (i) Operating  Expenses  (subject to
adjustment  pursuant to  Paragraph  36C hereof)  incurred  with  respect to each
Calendar Year exceeds (ii) Base Year Operating Expenses.  The Expense Adjustment
Amount with respect to each Calendar Year shall be paid in monthly installments,
in an amount estimated from time to time by Landlord and communicated by written
notice to Tenant, which estimate may be revised to reflect,  without limitation,
increases in Taxes during any period.  Landlord shall cause to be kept books and
records showing Operating  Expenses in accordance with an appropriate  system of
accounts and accounting practices consistently  maintained.  Following the close
of each Calendar Year, Landlord shall cause the amount of the Expense Adjustment
Amount for such  Calendar  Year to be computed  based on Operating  Expenses for
such  Calendar  Year and  Landlord  shall  deliver to Tenant a statement of such
amount  and  Tenant  shall  pay any  deficiency  to  Landlord  as  shown by such
statement within thirty (30) days after receipt of such statement.  If the total
of the estimated  monthly  installments  paid by Tenant during any Calendar Year
exceed the actual  Expense  Adjustment  Amount due from Tenant for such Calendar
Year,  at  Landlord's  option  such  excess  shall  be either  credited  against
payments next due hereunder or refunded by Landlord, provided Tenant is not then
in default  hereunder.  Delay in computation of the Expense Adjustment Amount or
failure  to deliver a  statement  of such  amount  shall not be deemed a default
hereunder  or a waiver of  Landlord's  right to collect the  Expense  Adjustment
Amount. In computing the Expense  Adjustment  Amount,  the following  provisions
relating  to Taxes  shall be  applicable:  The  amount  of any  refund  of Taxes
received by Landlord  shall be credited  against  Taxes for the Calendar Year in
which such refund is received;  provided,  however,  that in the event  Landlord
receives  a  refund  of Taxes  after  the  Termination  Date (as the same may be
accelerated  or extended  as provided  elsewhere  in this  Lease)  which  refund
relates to a Calendar  Year  during the Term  hereof,  the amount of such refund
fairly  allocable  to Tenant  shall be refunded  to Tenant by  Landlord  (net of
Tenant's  allocated  share of the cost of obtaining such refund and the cost, if
any, of making such refund);  and further  provided that if Tenant  expands into
space formerly occupied by other tenants,  which expansion space becomes subject
to this  Lease,  Tenant  shall  not be  entitled  to any  refund  or  credit  in
connection  with a refund or  abatement  of Taxes for periods  prior to Tenant's
occupancy of such  expansion  space.  All references to Taxes "for" a particular
Calendar  Year  shall be deemed to refer to Taxes due and  payable  during  such
Calendar Year without regard to when such Taxes are assessed or levied.


6.  USE OF PREMISES.
- --  ----------------

          Tenant shall use and occupy the Premises in  accordance  with law; and
solely as an office for the type of business specified in Paragraph I hereof and
for no other purpose or purposes.


7.  CONDITION OF PREMISES.
- --  ----------------------

          The Premises are demised to Tenant and Tenant accepts the same "as is"
and all work necessary to prepare the Premises for Tenant's  occupancy  shall be
performed at Tenant's sole cost and expense,  in accordance  with the applicable
provisions  of this  Lease.  Tenant's  taking  possession  of any portion of the
Premises  shall be conclusive  evidence that such portion of the Premises was in
good order and  satisfactory  condition  when Tenant took  possession  excluding
items of  damage  caused by Tenant or its  agents,  independent  contractors  or
suppliers. No promise of Landlord to alter, remodel or improve the Premises, the
Office Section or the Building and no  representation  by Landlord or its agents
respecting  the  condition of the Premises,  the Office  Section or the Building
have been made to Tenant or relied upon by Tenant other than as may be contained
elsewhere in this Lease (including  Exhibit B attached hereto) or in any written
amendment hereto signed by Landlord and Tenant.


8.  SERVICES.
- --  ---------

          A. List of Services.

          Landlord shall provide the following services,  the costs of which are
included within Operating Expenses,  on all days during the Term, except Sundays
and  holidays  (as set forth on Exhibit F  attached  hereto),  unless  otherwise
stated,  and  subject to all  governmental  rules,  regulations  and  guidelines
applicable thereto:

          (i) Heating and air  conditioning  in the  Premises  during the normal
     heating and air conditioning  seasons,  from Monday through Friday,  during
     the period from 8 a.m. to 6 p.m.  and on Saturday  during the period from 8
     a.m.  to 1 p.m.  Tenant  will  pay for  all  heating  and air  conditioning
     requested  and  furnished  prior to or following  such hours at rates to be
     established  from  time to time by  Landlord.  As of the date  hereof,  the
     current rate for such additional  services is forty-five  dollars  ($45.00)
     per hour per floor per tenant.  Requests for any additional  services shall
     be in writing  and  delivered  to  Landlord  not later  than 2 p.m.  of the
     previous day.

          (ii) Adequate  electrical  wiring and facilities for standard building
     lighting fixtures provided by Landlord and for Tenant's incidental uses (it
     being  understood  that  Tenant is to bear the cost of  replacement  of all
     lamps, tubes, ballasts and starters for lighting fixtures in the Premises);
     provided that (a) the connected electrical load for lighting and incidental
     use  equipment  does not exceed an average of five watts per square foot of
     the Premises;  (b) the electricity so furnished for incidental uses will be
     at a nominal  120 volts and no  electrical  circuit  for the supply of such
     incidental use will have a current capacity  exceeding 20 amperes;  and (c)
     such electricity will be used only for equipment and accessories  normal to
     office usage.  If Tenant's  requirements  for  electricity for lighting and
     incidental uses are in excess of those set forth in the preceding sentence,
     Landlord  reserves  the right to  require  Tenant to install  the  conduit,
     wiring and other equipment  necessary to supply electricity for such excess
     incidental  use  requirements  at  Tenant's  expense.  City  water from the
     regular Building outlets for drinking, lavatory and toilet purposes.

          (iv) Janitorial services as delineated in Exhibit D attached hereto.

          (v)  Window  washing  of the  inside  and  outside  of  windows in the
     Building's perimeter walls as may be situated in the Premises as delineated
     in Exhibit D attached hereto.

          (vi) Non-exclusive automatic passenger elevator service at all times.

          (vii)  Non-exclusive  freight  elevator  service subject to reasonable
     scheduling by Landlord.

          (viii) Security  services at a level consistent with other first class
     office buildings in Boston, Massachusetts.


<PAGE>
          B. Billing for  Electricity.

          (i)  Separate  Metering.  In the  event  that  Landlord  in  its  sole
     discretion   makes   arrangements   with  the  utility  company   supplying
     electricity to the Premises for separate metering and billing, Tenant shall
     pay (as hereinafter described) for the use of all electrical service to the
     Premises  (other than the  electrical  service  necessary  for  Landlord to
     fulfill its obligation to provide heating and air  conditioning as provided
     in Paragraph 8A(i) hereof). Tenant shall be billed directly by such utility
     company and Tenant agrees to pay each bill promptly in accordance  with its
     terms.  In the event that for any reason Tenant cannot be billed  directly,
     Landlord  shall  forward  each  bill  received  by it with  respect  to the
     Premises to Tenant which Tenant shall pay promptly in  accordance  with its
     terms.

          (ii) Intentionally deleted.

          C. Interruption of Services.

          Tenant  agrees  that  Landlord  shall  not be liable  in  damages,  by
abatement of Rent or  otherwise,  for failure to furnish or delay in  furnishing
any service, or for any diminution in the quality or quantity thereof, when such
failure or delay or diminution is  occasioned,  in whole or in part, by repairs,
renewals,  or improvements,  by any strike,  lockout or other labor trouble,  by
inability to secure electricity, gas, water, or other fuel at the Building after
reasonable  effort so to do, by any accident or casualty  whatsoever,  by act or
default of Tenant or other  parties,  or by any other  cause  beyond  Landlord's
reasonable  control;  and such failures or delays or  diminution  shall never be
deemed to constitute an eviction or  disturbance  of Tenant's use and possession
of the  Premises or relieve  Tenant from  paying Rent or  performing  any of its
obligations under this Lease.


<PAGE>
          D. Charges for Services.

          Charges for any service for which Tenant is required to pay, from time
to time  hereunder,  including  but not  limited to after  hours  heating or air
conditioning  shall be due and  payable at the same time as the  installment  of
Rent with  which  they are  billed,  or if billed  separately,  shall be due and
payable as further  Additional Rent within ten (10) days after such billing.  If
Tenant shall fail to make payment for any such services,  Landlord may,  without
notice to Tenant, in addition to any and all other remedies available under this
Lease  or  otherwise,   discontinue  any  or  all  of  such  services  and  such
discontinuance  shall not be deemed to constitute an eviction or  disturbance of
Tenant's use and  possession of the Premises or relieve  Tenant from paying Rent
or  performing  any of  its  other  obligations  under  this  Lease.  

          E. Energy Conservation.

          Notwithstanding  anything  to the  contrary  in  this  Paragraph  8 or
elsewhere  in this  Lease,  Landlord  shall  have the  right to  institute  such
policies,  programs and measures as may be necessary or desirable, in Landlord's
reasonable  discretion,  for the conservation  and/or  preservation of energy or
energy related services if consistent with similar programs instituted generally
in first-class  office buildings in Boston, or as may be required to comply with
any applicable codes, rules and regulations, whether mandatory or voluntary.


9.  REPAIRS; HAZARDOUS MATERIALS.
- --  -----------------------------

          Tenant will, at Tenant's own expense, keep the Premises, including all
improvements,  fixtures  and  furnishings  therein,  in good  order,  repair and
condition at all times during the Term, and Tenant shall promptly and adequately
repair  all  non-structural  damage to the  Premises  and  replace or repair all
damaged or broken glass,  fixtures and appurtenances on the Premises,  under the
supervision and subject to the reasonable  approval of Landlord,  and within any
reasonable  period of time  specified  by  Landlord.  If Tenant  does not do so,
Landlord may, but shall not be obligated to, make such repairs and replacements,
and Tenant shall pay Landlord the cost  thereof,  including a percentage  of the
cost thereof (to be uniformly  established for the Office Section) sufficient to
reimburse Landlord for all overhead, general conditions, fees and other costs or
expenses arising from Landlord's  involvement with such repairs and replacements
forthwith  upon being billed for same.  Landlord  may, but shall not be required
to, enter the Premises,  upon reasonable  prior notice,  at all reasonable times
(and at any time in emergency  situations)  to make such  repairs,  alterations,
improvements  and  additions  to the  Premises,  to the  Office  Section  or the
Building or to any  equipment  located in the Office  Section or the Building as
Landlord  shall desire or deem necessary or as Landlord may be required to do by
governmental  authority or court order or decree.  Landlord shall use reasonable
efforts not to interfere with Tenant's  business.

     Tenant  shall not (either with or without  negligence)  cause or permit the
escape,  disposal  or  release  of any  biologically  or  chemically  active  or
hazardous  substances,  or materials  (collectively the "Hazardous  Materials").
Tenant shall not allow the storage or use of  Hazardous  Materials in any manner
not sanctioned by law or by the highest standards prevailing in the industry for
the storage and use of such  Hazardous  Materials,  nor allow to be brought into
the Building any  Hazardous  Materials  except to use in the ordinary  course of
Tenant's  business,  and then only after written  notice is given to Landlord of
the identity of Hazardous  Materials.  Without  limitation,  Hazardous Materials
shall  include  those  described in the  Comprehensive  Environmental  Response,
Compensation  and Liability Act of 1980, as amended,  42 U.S.C.  Section 9601 et
seq., the Resource  Conservation and Recovery Act, as amended, 42 U.S.C. Section
6901 et seq., any  applicable  state or local laws and the  regulations  adopted
under  these  acts.  If any lender or  governmental  agency  shall ever  require
testing  to  ascertain  whether or not there has been any  release of  Hazardous
Materials,  then the  reasonable  costs thereof shall be reimbursed by Tenant to
Landlord upon demand as additional  charges if such  requirement  applies to the
Premises. In addition, Tenant shall execute affidavits,  representations and the
like from time to time as Landlord may reasonably  request  concerning  Tenant's
best knowledge and belief  regarding the presence of Hazardous  Materials on the
Premises. In all events, Tenant shall indemnify Landlord in the manner elsewhere
provided in this Lease from any release of  Hazardous  Materials on the Premises
occurring  while  Tenant is in  possession  or  elsewhere if caused by Tenant or
persons acting under Tenant.  The within  covenants shall survive the expiration
or earlier termination of the Term.

10.  ADDITIONS AND ALTERATIONS.
- ---  --------------------------

          A. Tenant shall not,  without the prior  written  consent of Landlord,
make any  alterations,  improvements or additions to the Premises  exceeding Two
Thousand Five Hundred and 00/100 Dollars ($2,500) in value.  Landlord's  refusal
to  give  said  consent  shall  be  conclusive.  If  Landlord  consents  to said
alterations, improvements or additions, it may impose such reasonable conditions
with  respect  thereto as  Landlord  deems  reasonably  appropriate,  including,
without  limitation,  requiring Tenant to furnish Landlord with security for the
payment of all costs to be  incurred  in  connection  with such work,  insurance
against   liabilities   which  may  arise  out  of  such  work,  and  plans  and
specifications plus permits necessary for such work, requiring Tenant to perform
such  work at times  designated  by  Landlord.  The work  necessary  to make any
alterations,  improvements  or additions to the  Premises,  whether  prior to or
subsequent to the  Commencement  Date,  shall be done at Tenant's expense to the
extent it exceeds the Construction Allowance (as defined in Paragraph 39 herein)
by employees of or contractors  hired by Landlord  except to the extent Landlord
gives its prior written  consent to Tenant's  hiring its own  contractors,  such
consent  not to be  unreasonably  withheld.  It is  understood  that  Landlord's
consent to the hiring by Tenant of Tenant's own  contractors  may be withheld if
Landlord's  permitting  such hiring  might  reasonably  be expected to adversely
affect other  construction  in the Building or might  reasonably  be expected to
result in an  interruption  of  services  provided  to tenants of the  Building.
Tenant shall promptly pay to Landlord or Tenant's  contractors,  as the case may
be, when due, the cost of all such work and of all decorating required by reason
thereof. Tenant shall also pay to Landlord a percentage of the cost of such work
(such  percentage to be established  on a uniform basis for the Office  Section)
sufficient to reimburse Landlord for all overhead, general conditions,  fees and
other  costs and  expenses  actually  incurred  by  Landlord  and  arising  from
Landlord's  involvement  with such work. In connection  with seeking  Landlord's
approval,  Tenant shall provide to Landlord plans and  specifications  regarding
proposed  alterations,  additions or improvements,  as Landlord shall reasonably
require,  and Tenant shall,  in addition to all other  expenses  which Tenant is
obligated to pay to Landlord  hereunder,  pay to Landlord the expense reasonably
incurred by Landlord in  connection  with the review of such  information.  Upon
completion  of such work Tenant shall  deliver to  Landlord,  if payment is made
directly to contractors,  evidence of payment,  contractors' affidavits and full
and final  waivers of all liens for labor,  services or  materials,  all in form
satisfactory  to Landlord.  Tenant shall  defend and hold  Landlord,  Landlord's
lessor,  any  mortgagee,  the MTA  (hereinafter  defined),  the Property and the
Building  harmless from all costs,  damages,  liens and expenses related to such
work  except  for the gross  negligence  or  willful  misconduct  of  Landlord's
contractors or employees. All work done by Tenant or its contractors pursuant to
Paragraphs 9 or 10 shall be done in a first-class  workmanlike manner using only
good grades of materials  and shall comply with all insurance  requirements  and
all applicable  laws and ordinances  and rules and  regulations of  governmental
departments  or  agencies.  Notwithstanding  anything  contained  herein  to the
contrary,  Landlord shall be obligated to provide the Construction  Allowance as
specified in Paragraph 39 herein.

          B.  All  alterations,  improvements  and  additions  to the  Premises,
whether  temporary or permanent  in  character,  made or paid for by Landlord or
Tenant,  shall without  compensation to Tenant become Landlord's property at the
termination  of this  Lease by  lapse of time or  otherwise  and  shall,  unless
Landlord  requests their removal (in  which case Tenant shall remove the same as
provided in  Paragraph  18),  be  relinquished  to  Landlord in good  condition,
ordinary wear excepted.

          Tenant   may   install,   maintain,   replace,   remove   or  use  any
communications or computer wires,  cables and related devices  (collectively the
"Lines") at the Property in or serving the Premises,  provided: (a) Tenant shall
obtain  Landlord's  prior written  consent,  such consent not to be unreasonably
withheld,  use an experienced  and qualified  contractor  approved in writing by
Landlord,  such approval not to be unreasonably withheld, and comply with all of
the other provisions of Paragraph 10A, (b) any  such installation,  maintenance,
replacement,  removal  or use  shall  not  interfere  with  the use of any  then
existing  Lines at the  Building,  (c) an  acceptable  number of spare Lines and
space for additional Lines shall be maintained for existing and future occupants
of the Building,  as determined "in Landlord's reasonable opinion, (d) if Tenant
at any time  uses  any  equipment  that  may  create  an  electromagnetic  field
exceeding the normal insulation  ratings or ordinary twisted pair riser cable or
cause  radiation  higher than normal  background  radiation,  the Lines therefor
(including  riser  cables)  shall be  appropriately  insulated  to prevent  such
excessive  electromagnetic fields or radiation, (e) as a condition to permitting
the  installation  of new Lines,  Landlord  shall  require  that  Tenant  remove
existing Lines located in or serving the Premises,  (f) Tenant's rights shall be
subject to the rights of any regulated  telephone company,  and (g) Tenant shall
pay all costs in connection  therewith.  Landlord  reserves the right to require
that  Tenant  remove  any Lines  located in or serving  the  Premises  which are
installed  in  violation  of  these  provisions,  or  which  are at any  time in
violation of any laws, ordinances, rules or regulations or represent a dangerous
or  potentially  dangerous  condition  (but only if such Lines were installed by
Tenant), within three (3) days after written notice.

          Landlord may (but shall not have the  obligation  to): (i) install new
Lines at the Building,  (ii) create  additional space for Lines at the Property,
and  (iii)  reasonably  direct,   monitor  and/or  supervise  the  installation,
maintenance,   replacement   and  removal  of,  the   allocation   and  periodic
reallocation  of  available  space (if any) for,  and the  allocation  of excess
capacity  (if any) on, any Lines now or  hereafter  installed at the Building by
Landlord, Tenant or any other party (but Landlord shall have no right to monitor
or control the information  transmitted  through such Lines).  Such rights shall
not be in limitation of other rights that may be available to Landlord by law or
otherwise. If Landlord exercises any such rights, Landlord may charge Tenant for
the costs reasonably  attributable to Tenant, or may include those costs and all
other costs in Operating  Expenses under  Paragraph  5A(vi)  (including  without
limitation,  costs for acquiring and installing  Lines and risers to accommodate
new Lines and spare Lines, any associated  computerized  system and software for
maintaining  records  of  Line  connections,  and  the  fees  of any  consulting
engineers and other experts);  provided,  any capital  expenditures  included in
Operating  Expenses  hereunder  shall be  amortized  (together  with  reasonable
finance charges) as provided in Paragraph 5A(vi).

          Tenant  shall not,  without the prior  written  consent of Landlord in
each instance, such consent not to be unreasonably withheld or delayed, grant to
any third  party a security  interest  or lien in or on the Lines,  and any such
security  interest or lien granted without  Landlord's  written consent shall be
null and void.  Except to the extent  arising from the  intentional or negligent
acts of Landlord  or  Landlord's  agents or  employees,  Landlord  shall have no
liability  for damages  arising  from,  and  Landlord  does not warrant that the
Tenant's use of any Lines will be free from the following  (collectively  called
"Line Problems"): (x) any eavesdropping or wire-tapping by unauthorized parties,
(y) any  failure  of any  Lines to  satisfy  Tenant's  requirements,  or (z) any
shortages, failures, variations,  interruptions,  disconnections, loss or damage
caused by the installation, maintenance, replacement, use or removal of Lines by
or for other  tenants  or  occupants  at the  Building,  by any  failure  of the
environmental  conditions or the power supply for the Building to conform to any
requirements  for the Lines or any associated  equipment,  or any other problems
associated with any Lines by any other cause.  Under no circumstances  shall any
Line  Problems be deemed an actual or  constructive  eviction of Tenant,  render
Landlord  liable to  Tenant  for  abatement  of Rent,  or  relieve  Tenant  from
performance of Tenant's obligations under this Lease. Landlord in no event shall
be liable for damages by reason of loss of  profits,  business  interruption  or
other consequential damage arising from any Line Problems.

11.  COVENANT AGAINST LIENS.
- ---  -----------------------

          Tenant  has no  authority  or power to  cause  or  permit  any lien or
encumbrance of any kind whatsoever,  whether created by act of Tenant, operation
of law or otherwise,  to attach to or be placed upon the Property,  the Building
or the  Premises,  or to affect any estate or interest of  Landlord,  Landlord's
lessor,  any mortgagee or the MTA. Tenant  covenants and agrees not to suffer or
permit any lien of  mechanics,  materialmen  or others to be placed  against the
Property,  the Building or the Premises,  or to affect any estate or interest of
Landlord,  Landlord's  lessor, any mortgagee or the MTA, with respect to work or
services  claimed to have been  performed for or materials  claimed to have been
furnished to Tenant or the Premises,  and, in case of any such lien attaching or
notice of any lien,  or claim  therefor  being  asserted,  Tenant  covenants and
agrees to cause same to be  immediately  released and removed of record.  In the
event that such lien is not immediately released and removed,  Landlord,  at its
sole  option,  may take all action  necessary  to release  and remove  such lien
(without any duty to investigate the validity thereof) and Tenant shall promptly
upon notice  reimburse  Landlord  for all sums,  costs and  expenses  (including
reasonable attorneys' fees) incurred by Landlord in connection therewith.



<PAGE>
12.  INSURANCE.
- ---  ----------

          A. Waiver of Subrogation.

          Landlord and Tenant each hereby waive any and every claim for recovery
from the other for any and all loss of or damage to the Building or the Premises
or to the  contents  thereof,  which  loss or  damage  is  covered  by valid and
collectible physical damage insurance policies,  to the extent that such loss or
damage is  recoverable  under said insurance  policies.  Inasmuch as this mutual
waiver  will  preclude  the  assignment  of any such  claim by  subrogation  (or
otherwise) to an insurance  company (or any other  person),  Landlord and Tenant
each agree to give to each insurance  company which has issued, or in the future
may issue,  to it policies of physical damage  insurance,  written notice of the
terms of this  mutual  waiver,  and to have  said  insurance  policies  properly
endorsed,  if necessary,  to prevent the invalidation of said insurance coverage
by reason of said waiver.  Tenant's  waiver of subrogation  as  hereinabove  set
forth shall also run to the benefit of and extend to  Landlord's  lessor and the
MTA.

          B. Coverage.

          Tenant shall  purchase and maintain  insurance  during the entire Term
for the benefit of Tenant,  Landlord,  Landlord's  lessor, any mortgagee and the
MTA (as their  respective  interests  may appear) with terms,  coverages  and in
companies  satisfactory  to  Landlord,  and with  such  increases  in  limits as
Landlord may from time to time request,  but initially Tenant shall maintain the
following coverages in the following amounts:


<PAGE>
                  (i) Commercial  General Liability  Insurance  covering Tenant,
         Landlord,  Landlord's lessor,  the MTA and Landlord's  management agent
         for  claims of bodily  injury,  personal  injury  and  property  damage
         arising out of Tenant's  operations,  assumed liabilities or use of the
         Premises, for limits of liability not less than:

                    Bodily Injury and Property  $2,000,000 each occurrence
                    Damage Liability            $2,000,000 annual aggregate
                    Personal Injury Liability   $2,000,000 annual aggregate
                                                0% Insured's participation

                  (ii)  Comprehensive  Automobile  Insurance covering all owned,
         nonowned  and hired  automobiles  of Tenant  including  the loading and
         unloading of any automobile with limits of liability not less than:

                    Bodily Injury and Property  $2,000,000 each person
                    Damage Liability            $2,000,000 each accident

                  (iii)  Physical  Damage  Insurance   covering  all  additions,
         improvements  and  alterations  to the  Premises  which are  beyond the
         building  standard  tenant  improvements  provided by Landlord  and all
         office furniture, trade fixtures, office equipment, merchandise and all
         other items of Tenant's property on the Premises.  Such insurance shall
         be written on an "all risks" of physical loss or damage basis,  for the
         full  replacement  cost value of the covered  items and in amounts that
         meet any coinsurance clauses of the policies of insurance.

Tenant  shall,  prior to the  commencement  of the  Term,  furnish  to  Landlord
certificates  evidencing  such  coverage,  on ACORD Form 27, which  certificates
shall state that such insurance  coverage may not be changed or canceled without
at least thirty (30) days' prior written notice to Landlord and Tenant and shall
name Landlord and Landlord's management agent as additional insureds.

          C. Avoid Action Increasing Rates.

          Tenant  shall  comply with all  applicable  laws and  ordinances,  all
orders  and  decrees  of  court  and  all  requirements  of  other  governmental
authorities  having  jurisdiction over the Building and of the applicable rating
bureau,  and shall not, directly or indirectly,  make any use of the Premises in
violation of the Use  specified in Article I which may thereby be  prohibited or
be  dangerous  to  person or  property  or which may  jeopardize  any  insurance
coverage or may increase the cost of insurance or require  additional  insurance
coverage.  If, by reason of the failure of Tenant to comply with the  provisions
of this  Paragraph  12C after notice from  Landlord and a period of two (2) days
after such notice is given to Tenant to cure such  violation,  (i) any insurance
coverage is  jeopardized  Landlord may, in addition to all other  remedies which
may be available to Landlord,  terminate this Lease or (ii)  insurance  premiums
are increased,  Landlord shall have the option either to terminate this Lease or
to require Tenant to make immediate payment of the increased insurance premium.


13.  FIRE OR CASUALTY.
- ---  -----------------

          A. Paragraph 9 hereof  notwithstanding,  if the Premises or the access
thereto  shall be damaged by fire or other  casualty and if such damage does not
render  all or a  material  portion  of  the  Premises  untenantable  and if the
Premises,  the Office Section or the Building are not substantially  damaged (as
hereinafter  defined),  then Landlord shall, subject to building and zoning laws
then applicable, repair and restore the same with reasonable promptness, subject
to  reasonable  delays for  insurance  adjustments  and delays caused by matters
beyond  Landlord's  reasonable  control,  but shall not be  obligated  to expend
therefor an amount in excess of the proceeds of insurance recovered with respect
thereto. If all or a material portion of the Premises are rendered  untenantable
by fire or  other  casualty,  or if the  Premises,  the  Office  Section  or the
Building  are  substantially  damaged  by  fire  or  other  casualty  (the  term
"substantially damaged" meaning damage of such a character that the same cannot,
in ordinary  course,  reasonably  be expected to be repaired  within ninety (90)
days from the time that repair work would commence),  then, in either such case,
Landlord  shall  have the right to  terminate  this  Lease by  giving  notice of
Landlord's election so  to do not later than one hundred twenty (120) days after
Landlord  has  ascertained  all  information  required by Landlord to  determine
whether or not to terminate this Lease,  including without limitation the amount
of insurance  proceeds which are available to Landlord for  restoration.  In the
event Landlord gives such termination  notice,  this Lease shall terminate (with
appropriate  proration(s)  of Rent being  made for  Tenant's  possession  of the
tenantable portion of the Premises after the date of such damage) as of the date
specified in such notice (but in no event sooner than thirty (30) days after the
date of such  notice)  with the same force and  effect as if the date  specified
were the date  originally  established  as the expiration  date hereof  Landlord
shall have no liability to Tenant, and Tenant shall not be entitled to terminate
this  Lease  by  virtue  of  any  delays  in  completion  of  such  repairs  and
restoration.  Further, in the event this Lease is not terminated, Landlord shall
not be  obligated  to restore any portion of the Office  Section or the Building
outside of the Premises  which is not  necessary  for  reasonable  access to and
egress from the Premises.  Except as otherwise  provided below, Rent shall abate
on those portions of the Premises as are, from time to time,  untenantable  as a
result of such damage.

          B. In the event the  Premises,  the Office  Section or the Building is
damaged by fire or other  casualty  resulting from the act or neglect of Tenant,
its agents,  contractors,  employees  or invitees and if this Lease shall not be
terminated by Landlord as a result of such damage,  Tenant shall not be released
from any of its obligations hereunder including, without limitation, its duty to
pay Rent, and Rent shall not be abated.

          C. Notwithstanding anything to the contrary herein set forth, Landlord
shall have no duty  pursuant  to  this  Paragraph  13 to repair or  restore  any
portion of the  alterations,  additions or  improvements  in the Premises or the
decorations  thereto  except to the  extent  that such  alterations,  additions,
improvements and decorations  were provided by Landlord,  at Landlord's cost, at
the, beginning of the Term. If Tenant desires any other or additional repairs or
restoration and if Landlord consents thereto, the same shall be done at Tenant's
sole cost and expense  subject to all of the  provisions  of Paragraph 9 hereof.
Tenant  acknowledges that Landlord shall be entitled to the full proceeds of any
insurance  coverage,  whether  carried  by  Landlord  or  Tenant,  for damage to
alterations,  additions, improvements or decorations provided by Landlord either
directly or through an allowance to Tenant.


14.  WAIVER OF CLAIMS - INDEMNIFICATION.
- ---  -----------------------------------

          To the extent not  prohibited  by law,  Landlord,  its  partners,  its
managing agent,  Landlord's lessor, any mortgagee,  the MTA and their respective
officers,  agents,  servants  and  employees  shall not be liable for any damage
either to person or property or resulting from the loss of use thereof sustained
by Tenant or by other  persons due to the  Building,  or any part thereof or any
appurtenances  thereof  becoming out of repair,  or due to the  happening of any
accident or event in or about the Office Section,  the Premises or the Building,
or due to any act or neglect of any tenant or  occupant  of the Office  Section,
the  Building  or of any other  person or entity.  This  provision  shall  apply
particularly,  but not exclusively, to damage caused by gas, electricity,  snow,
frost, steam, sewage, sewer gas or odors, fire, water, noise,  vibration,  fumes
or by the bursting or leaking of pipes, faucets,  sprinklers,  plumbing fixtures
and  windows,  and shall  apply  whether the damage was due to any of the causes
specifically  enumerated  above or to some other cause of an entirely  different
kind.  Tenant  further agrees that all personal  property upon the Premises,  or
upon loading  docks,  receiving and holding areas,  or freight  elevators of the
Building  shall be at the risk of Tenant only,  and that  Landlord  shall not be
liable for any loss or damage  thereto or theft thereof.  Without  limitation of
any other provisions  hereof,  Tenant agrees to defend,  protect,  indemnify and
save harmless  Landlord,  Landlord's  lessor, any mortgagee and the MTA from and
against all  liability  to third  parties  which arose (or which were claimed to
have  arisen)  within or without  the  Premises or out of acts or  omissions  of
Tenant and its servants, agents, employees, contractors,  suppliers, workers and
invitees.  Without limitation of any other provisions hereof, Landlord agrees to
defend,  protect,  indemnify  and save  harmless  Tenant  from and  against  all
liability  to third  parties  which arose (or which were claimed to have arisen)
within or without the  Premises or out of acts or  omissions of Landlord and its
servants, agents, employees, contractors, suppliers and workers.



<PAGE>
15.  NONWAIVER.
- ---  ----------

          No waiver of any  provision  of this  Lease  shall be  implied  by any
failure of Landlord to enforce  any remedy on account of the  violation  of such
provision, even if such violation be continued or repeated subsequently,  and no
express  waiver shall affect any provision  other than the one specified in such
waiver and that one only for the time and in the manner specifically  stated. No
receipt of monies by Landlord  from Tenant after the  termination  of this Lease
shall in any way alter the length of the Term or of Tenant's right of possession
hereunder or after the giving of any notice shall reinstate,  continue or extend
the Term or affect any notice  given Tenant prior to the receipt of such monies,
it being agreed that after the service of notice or the  commencement  of a suit
or after final judgment for possession of the Premises, Landlord may receive and
collect  any Rent due,  and the  payment  of said Rent shall not waive or affect
said notice, suit or judgment.


16.  CONDEMNATION.
- ---  -------------

          If the Property, the Building or any portion thereof shall be taken or
condemned  by any  competent  authority  for any public or  quasi-public  use or
purpose (a "taking"), or if the configuration of any roadway,  street, alley, or
railroad  line  adjacent to or beneath the Building is changed by any  competent
authority  and  such taking or change in  configuration  makes it  necessary  or
desirable to remodel or reconstruct  the Building or any part thereof,  Landlord
shall have the right,  exercisable at its sole discretion,  to cancel this Lease
upon not less than ninety (90) days'  notice  prior to the date of  cancellation
designated in the notice.  No money or other  consideration  shall be payable by
Landlord to Tenant for the right of cancellation  and Tenant shall have no right
to share in the condemnation award or in any judgment for damages caused by such
taking or change in configuration.  Tenant shall be entitled to file a claim for
its trade fixtures, all of which it may remove.


17.  ASSIGNMENT AND SUBLETTING.
- ---  --------------------------

          A. Tenant  shall not,  without the prior  written  consent of Landlord
(which consent shall not be unreasonably withheld or delayed) (i) assign, convey
or mortgage this Lease or any interest hereunder;  (ii) permit to occur or exist
any assignment of this Lease, or any lien upon Tenant's interest, voluntarily or
by operation of law;  (iii)  sublet the  Premises or any part  thereof,  or (iv)
permit  the  use of the  Premises  by any  parties  other  than  Tenant  and its
employees. Any such action on the part of Tenant shall be void and of no effect.
Notwithstanding the foregoing,  the sale of all or substantially all of Tenant's
assets,  or the merger or  consolidation  of Tenant  with a person  controlling,
controlled  by or under  common  control  with  Tenant,  shall  not be deemed an
assignment,  conveyance, sublet or mortgage of this Lease. Landlord's consent to
any  assignment,  subletting  or transfer or  Landlord's  election to accept any
assignee,  subtenant or transferee  as the tenant  hereunder and to collect rent
from such  assignee,  subtenant or  transferee  shall not release  Tenant or any
subsequent  tenant from any covenant or obligation under this Lease.  Landlord's
consent to any assignment,  subletting or transfer shall not constitute a waiver
of  Landlord's  right  to  withhold  its  consent  to  any  future   assignment,
subletting,  or transfer.  If Tenant is a corporation  and if at any time during
the Term the person or persons  who own a majority  of its voting  shares at the
time of the  execution  of this Lease  cease to own a majority  of such  shares,
Tenant shall so notify Landlord, and Landlord may terminate this Lease by notice
to Tenant given not later than ninety (90) days thereafter. This provision shall
not apply whenever Tenant is a corporation the outstanding voting stock of which
is listed on a recognized security exchange. For the purposes of this provision,
stock  ownership  shall be  determined  in  accordance  with  Section 544 of the
Internal  Revenue Code of 1986, as amended  through  December 31, 1989,  and the
regulations  thereunder,  and the term  "voting  stock" shall refer to shares of
stock  regularly  entitled  to  vote  for  the  election  of  directors  of  the
corporation.  

          B. Without  limitation of the rights of Landlord  hereunder in respect
thereto,  if there is any  assignment of this Lease by Tenant or a subletting of
the whole of the Premises by Tenant at a rent which, in either case, exceeds the
rent payable  hereunder by Tenant,  or if there is a subletting  of a portion of
the Premises by Tenant at a rent in excess of the  subleased  portion's pro rata
share  of the rent  payable  hereunder  by  Tenant,  then  Tenant  shall  pay to
Landlord,   as  additional  rent,   forthwith  upon  Tenant's  receipt  of  each
installment of any such excess rent, fifty percent (50%) of any such excess rent
(excluding any monies received from the sale of Tenant's fixtures,  equipment or
personal property).  The  provisions of this paragraph  shall apply  to each and
every  assignment of the Lease and each and every subletting of all or a portion
of the Premises, whether to a subsidiary or controlling corporation or any other
person,  firm or  entity,  in each case on the terms  and  conditions  set forth
herein.  Each request by Tenant for permission to assign this Lease or to sublet
the whole or any part of the  Premises  shall be  accompanied  by a warranty  by
Tenant as to the amount of rent to be paid to Tenant by the proposed assignee or
sublessee.  Landlord or its authorized  representatives  shall have the right at
all reasonable  times,  upon prior written notice to Tenant, to audit the books,
records  and  papers  of  Tenant  relating  to  any  consideration  received  in
connection  with such an assignment or  subletting,  and shall have the right to
make reasonable copies thereof which shall be kept  confidential.  If the excess
rent being paid shall be found understated, Tenant shall within thirty (30) days
after  demand  pay the  deficiency,  and  Landlord's  cost of such  audit and if
understated  by more than five percent  (5%),  Landlord  shall have the right to
terminate  this Lease upon thirty (30) days'  notice.  For the  purposes of this
Paragraph  17B,  the term "rent"  shall mean all Base Rent,  Additional  Rent or
other payments and/or  consideration  payable by one party to another related to
the use and occupancy of all or a portion of the Premises.


18.  SURRENDER OF POSSESSION.
- ---  ------------------------

          Upon the  expiration of the Term or upon the  termination  of Tenant's
right of  possession to all or a portion of the  Premises,  whether  by lapse of
time or at the option of Landlord as herein  provided,  Tenant  shall  forthwith
quietly and peaceably  surrender the Premises or portion  thereof to Landlord in
good order,  repair and  condition,  ordinary  wear and casualty  excepted.  Any
interest  of  Tenant  in the  alterations,  improvements  and  additions  to the
Premises made or paid for by Landlord or Tenant shall,  without  compensation to
Tenant, become, at Landlord's option,  Landlord's property at the termination of
this Lease by lapse of time or otherwise  and if such option is  exercised  such
alterations,  improvements  and additions  shall be  relinquished to Landlord in
good  condition,  ordinary  wear  excepted.  Within  seven (7) days prior to the
termination of the Term or of Tenant's  right of possession  Tenant shall remove
office  furniture,  trade  fixtures,  office  equipment  and all other  items of
Tenant's property on the Premises.  Tenant shall pay to Landlord upon demand the
reasonable  cost of  repairing  any damage to the  Premises  and to the Building
caused by any  removal  required  hereunder.  If Tenant  shall fail or refuse to
remove  any  such  property  from the  Premises,  Tenant  shall be  conclusively
presumed to have abandoned the same,  and title thereto shall  thereupon pass to
Landlord without any cost either by set-off, credit, allowance or otherwise, and
Landlord  may at its option  accept the title to such  property  or, at Tenant's
expense,  may (i) remove the same or any part in any manner that Landlord  shall
choose,  repairing any damage to the Premises  caused by such removal,  and (ii)
store,  destroy or otherwise dispose of the same without incurring  liability to
Tenant or any other person.


19.  HOLDING OVER.
- ---  -------------

          In addition to performing all of Tenant's other obligations hereunder,
Tenant  shall pay to  Landlord an amount as Rent equal to the greater of (i) the
monthly  market rental rate for a term of not less than one (1) year for similar
premises  in  the  Building   without  regard  to  concessions  such  as  tenant
improvement  allowance  and free rent,  if any,  or (ii) the sum of one  hundred
fifty  percent  (I 5 0%) of  one-twelfth  the Base  Rent and one  hundred  fifty
percent  (150%) of  one-twelfth  the  Additional  Rent paid by Tenant during the
previous  Calendar Year herein  provided,  such amount to be paid monthly during
each month or portion  thereof for which Tenant shall retain  possession  of the
Premises or any part thereof  after the  termination  of the Term or of Tenant's
right of possession,  whether by lapse of time or otherwise,  and also shall pay
all damages sustained by Landlord,  whether direct or consequential,  on account
thereof. At the option of Landlord,  expressed in a written notice to Tenant and
not otherwise,  such holding over shall constitute a renewal of this Lease for a
period of one year at such Base Rent and Additional  Rent as would be applicable
for such year,  and if Landlord  does not so notify  Tenant,  such  holding over
shall constitute the Tenant a tenant-at-will from month to month. The provisions
of this  Paragraph 19 shall not be deemed to limit or constitute a waiver of any
other rights or remedies of Landlord provided herein or at law.


20.  ESTOPPEL CERTIFICATE.
- ---  ---------------------

          Tenant  agrees  that,  from  time to time  upon not less than ten (10)
days' prior request by Landlord,  Landlord's lessor or any mortgagee,  Tenant or
Tenant's duly authorized  representative having knowledge of the following facts
will deliver to Landlord a statement in writing  certifying  (i) that this Lease
is unmodified and in full force and effect (or if there have been modifications,
a description  of such  modifications  and that the Lease as modified is in full
force and  effect);  (ii) the dates to which  Rent and other  charges  have been
paid; (iii) to the best of Tenant's knowledge,  Landlord is not in default under
any provision of this Lease,  or, if in default,  the nature  thereof in detail;
(iv) that the Premises have been delivered to Tenant by Landlord and accepted by
Tenant; (v) that there are no proceedings pending against Tenant which have been
adversely decided and which would affect Tenant's  obligations under this Lease;
(vi)  that  Tenant  has not made a claim  against  Landlord  which  has not been
resolved  or  satisfied;  and (vii) such  further  matters as may be  reasonably
requested by Landlord,  it being  intended that any such statement may be relied
upon by any  prospective  assignee of Landlord,  any  mortgagee  or  prospective
mortgagee of the Building,  any prospective  assignee of any such mortgagee,  or
any prospective  and/or  subsequent  purchaser or transferee of all or a part of
Landlord's interest in the Property,  the Office Section or the Building, or any
other  person  having an  interest  therein.  Tenant  shall  execute and deliver
whatever instruments may be required for such purposes,  and in the event Tenant
fails so to do within ten (10) days after  demand in  writing,  Tenant  shall be
considered in default under this Lease.


21.  SUBORDINATION.
- ---  --------------

          This  Lease  and all  rights  of  Tenant  hereunder  are  subject  and
subordinate to any mortgage or mortgages, blanket or otherwise, made by Landlord
and which do now or may hereafter affect the Property or the Building and to any
and all renewals,  modifications,  consolidations,  replacements  and extensions
thereof,  and to any  ground  or  other  lease,  or  similar  instrument  now or
hereafter  placed against the Building.  It is the intention of the parties that
this  provision  be  self-operative  and  that no  further  instrument  shall be
required to effect such subordination of this Lease. Tenant shall, however, upon
demand at any time or times execute, acknowledge and deliver to Landlord without
expense to Landlord,  any and all instruments that may be necessary or proper to
subordinate  this Lease and all rights of Tenant  hereunder to any such mortgage
or mortgages or to confirm or evidence such subordination.  Tenant covenants and
agrees, in the event any proceedings are brought for the foreclosure of any such
mortgage,  to attorn,  without any  deductions  or set-offs  whatsoever,  to the
purchaser  upon  any  such  foreclosure  sale  if so  requested  to  do by  such
purchaser,  and to recognize  such  purchaser as the Landlord  under this Lease.
Tenant agrees to execute and deliver at any time and from time-to-time, upon the
request of Landlord or of any holder of such mortgage or of such purchaser,  any
instrument  which,  in the  sole  judgment  of  such  requesting  party,  may be
necessary or  appropriate  in any such  foreclosure  proceeding  or otherwise to
evidence such attornment. Tenant and Landlord further agree that if so requested
by any  mortgagee  of  Landlord,  this Lease shall be made  superior to any such
mortgage and that they will  execute  such  documents as may be required by such
mortgagee to effect the superiority of this Lease to such mortgage.

22.  CERTAIN RIGHTS RESERVED BY LANDLORD.
- ---  ------------------------------------

          Landlord shall have the following rights (but not  obligations),  each
of which Landlord may exercise  without notice to Tenant (except with respect to
(i) which shall require no less than thirty (30) days prior written  notice) and
without liability to Tenant for damage or injury to property, person or business
on account of the  exercise  thereof,  and the exercise of any such rights shall
not be deemed to  constitute  an eviction  or  disturbance  of  Tenant's  use or
possession  of the  Premises and shall not give rise to any claim for set-off or
abatement of Rent or any other claim:

                    (i) To change the Building's name or street address.

                    (ii) To install, affix and maintain any and all signs on the
          exterior and on the interior of the Building.

                    (iii)  To   decorate  or  to  make   repairs,   alterations,
          additions,  or improvements,  whether structural or otherwise,  in and
          about the  Building,  or any part  thereof,  and for such  purposes to
          enter upon the  Premises,  and during the  continuance  of any of said
          work,  to  temporarily  close  doors,  entryways,   public  space  and
          corridors in the Building  and to  interrupt  or  temporarily  suspend
          services or use of facilities,  all without  affecting any of Tenant's
          obligations  hereunder,   so  long  as  the  Premises  are  reasonably
          accessible and usable,  and with the use of reasonable  efforts not to
          interfere with Tenant's business.

                    (iv) To  furnish  door  keys for the  entry  door(s)  in the
          Premises at the commencement of this Lease and to retain at all times,
          and to use in appropriate instances, keys to all doors within and into
          the Premises.  Tenant agrees to purchase only from Landlord additional
          duplicate keys as required, to change no locks, and not to affix locks
          on doors  without  the prior  written  consent of  Landlord  not to be
          unreasonably  withheld.  Notwithstanding the provisions for Landlord's
          access to  Premises,  Tenant  relieves  and  releases  Landlord of all
          responsibility  arising out of theft, robbery,  pilferage and personal
          assault.  Upon  the  expiration  of the Term or of  Tenant's  right of
          possession,  Tenant  shall  return  all  keys to  Landlord  and  shall
          disclose to Landlord the combination of any safes,  cabinets or vaults
          left in the Premises.

                    (v) To designate  and approve all window  coverings  used in
          the Building.

                    (vi) To approve  the  weight,  size and  location  of safes,
          vaults  and  other  heavy  equipment  and  articles  in and  about the
          Premises  and the  Building  so as not to exceed  the legal  live load
          limit of seventy (70) pounds per square  foot,  as  designated  by the
          structural  engineers for the Building,  and to require all such items
          and  furniture  and  similar  items  to be  moved  into  or out of the
          Building  and  Premises  only at such  times  and in  such  manner  as
          Landlord shall direct in writing.  Tenant shall not install or operate
          machinery or any mechanical  devices of a nature not directly  related
          to Tenant's  ordinary  use of the Premises  without the prior  written
          consent of Landlord. Movements of Tenant's property into or out of the
          Building or the  Premises  and within the Building are entirely at the
          risk and  responsibility of Tenant, and Landlord reserves the right to
          require  permits before  allowing any property to be moved into or out
          of the Building or the Premises.

                    (vii) To establish  security policies and other controls for
          the purpose of regulating all property and packages, both personal and
          otherwise,  to be moved into or out of the  Building  and Premises and
          all persons  using the Building  both during and after  normal  office
          hours.

                    (viii) To regulate  delivery and service of supplies and the
          usage of the loading docks, receiving areas and freight elevators.

                    (ix) To show the Premises to prospective  tenants during the
          last six (6) months of the Term at  reasonable  times upon  reasonable
          notice and, if vacated or abandoned, to show the Premises at any time,
          and to prepare the Premises for reoccupancy.

                    (x) To erect,  use and  maintain  pipes,  ducts,  wiring and
          conduits,  and appurtenances  thereto,  in and through the Premises at
          reasonable locations.

                    (xi) To enter the Premises at any reasonable time to inspect
          the Premises upon reasonable prior notice as set forth herein,  except
          in the case of an emergency.

                    (xii) To grant to any person or to reserve  unto  itself the
          exclusive  right to conduct any  business or render any service in the
          Building.



<PAGE>
23.  RULES AND REGULATIONS.
- ---  ----------------------

          Tenant  agrees to observe the rules and  regulations  for the Building
attached  hereto as Exhibit C and made a part  hereof.  Landlord  shall have the
right from time to time to prescribe  additional rules and regulations which, in
its  reasonable  judgment,  may be desirable for the use,  entry,  operation and
management of the Premises,  the Office Section and the Building,  each of which
rules and  regulations  and any  amendments  thereto shall become a part of this
Lease.  Tenant  shall  comply  with all such  rules and  regulations;  provided,
however,  that such rules and regulations  shall not contradict or, abrogate any
right or privilege herein expressly granted to Tenant. The rules and regulations
shall be enforced by Landlord in a non-discriminatory manner.

24.  LANDLORD'S REMEDIES.
- ---  --------------------

          If default shall be made in the payment of the Rent or any installment
thereof or in the payment of any other  sum  required to be paid by Tenant under
this Lease or under the terms of any other agreement between Landlord and Tenant
and such  default  shall  continue  for five (5) days  after  written  notice to
Tenant,  or if default shall be made in the  observance or performance of any of
the other  covenants  or  conditions  in this Lease which  Tenant is required to
observe and  perform and such  default  shall  continue  for ten (10) days after
written notice to Tenant (provided, however, if Tenant has commenced curing such
default and is diligently  proceeding with such cure, Tenant shall have a period
of up to thirty (30) days after written  notice to Tenant to cure such default),
or if a  default  involves  a  hazardous  condition  and is not  cured by Tenant
immediately upon written notice to Tenant,  or if the interest of Tenant in this
Lease  shall be levied on under  execution  or other  legal  process,  or if any
voluntary  petition in  bankruptcy  or for  corporate  re-organization  (but not
including  the  merger  or  consolidation  of  Tenant  with  or  into  a  person
controlling,  controlled by or under common  control with Tenant) or any similar
relief shall be filed by Tenant,  or if any  involuntary  petition in bankruptcy
shall  be filed  against  Tenant  under  any  federal  or  state  bankruptcy  or
insolvency act and shall not have been dismissed within sixty (60) days from the
filing  thereof,  or if a receiver  shall be appointed  for Tenant or any of the
property of Tenant by any court and such receiver  shall not have been dismissed
within forty-five (45) days from the date of his appointment, or if Tenant shall
make an  assignment  for  the benefit of creditors,  or if Tenant shall admit in
writing Tenant's  inability to meet Tenant's debts as they mature,  or if Tenant
shall cease to occupy the Premises for a period of twenty (20)  consecutive days
during the Term,  then  Landlord may treat the  occurrence of any one or more of
the foregoing events as a breach of this Lease, and thereupon at its option may,
after the  expiration of all notice and grace periods set forth herein,  if any,
without  any  further  notice  or any  demand of any kind to Tenant or any other
person,  have any one or more of the following described remedies in addition to
all other rights and remedies  provided at law or in equity or elsewhere herein:

                    (i) Landlord may  terminate  this Lease and the Term created
          hereby and shall give Tenant written notice of Landlord's  election to
          do so and the effective date thereof (the "Effective  Date"), in which
          event  Landlord  may  forthwith  repossess  the  Premises and shall be
          entitled to recover,  forthwith as liquidated  damages, in addition to
          any other sums or damages for which  Tenant may be liable to Landlord,
          a sum of money equal to the present  value (such  present  value to be
          computed on the basis of a per annum  discount rate equal to 200 basis
          points below the effective annual yield on U.S.  Treasury  obligations
          which could be  purchased  on the  business  day next  succeeding  the
          Effective Date and mature closest to the Termination Date) of the Rent
          provided  to be paid by Tenant  for the  balance  of the Term over the
          present value of the fair market  rental value of the Premises,  after
          deduction  from the present  value of such fair market rental value of
          all anticipated expenses of reletting. Should the present value of the
          fair market  rental  value of the  Premises,  after  deduction  of all
          anticipated expenses of reletting,  for the balance of the Term exceed
          the  present  value of the Rent  provided to be paid by Tenant for the
          balance  of the Term,  Landlord  shall  have no  obligation  to pay to
          Tenant the excess or any part  thereof or to credit such excess or any
          part thereof against any other sums or damages for which Tenant may be
          liable to Landlord.

                    (ii)  Landlord  may  terminate  this  Lease  and the Term as
          provided in (i) above and  forthwith  repossess the Premises and shall
          be  entitled  to recover  forthwith,  in addition to any other sums or
          damages  for which  Tenant may be liable to  Landlord,  a sum of money
          equal  to  amounts  then  due  and  the  present  value  (computed  as
          aforesaid)  of all or a portion  of the Rent and other  sums to become
          due  under  this  Lease  for  all or a part  of the  period  from  the
          Effective Date to the Termination  Date.  Furthermore,  Landlord shall
          have the right from time to time to recover  from  Tenant,  and Tenant
          shall remain liable for all Rent which would have been due, other than
          Rent accelerated and paid pursuant to the foregoing sentence,  and any
          other sums  thereafter  accruing  as they  become due under this Lease
          during the period from the Effective Date to the Termination  Date. In
          any such case,  Landlord  may  (but shall be under no  obligation  to,
          except as required by law) relet the  Premises or any part thereof for
          the account of Tenant,  for such rent, from time to time (which may be
          for a term  extending  beyond the Term of this  Lease),  and upon such
          terms as Landlord in Landlord's sole discretion shall  determine,  and
          Landlord  shall not be required to accept any tenant offered by Tenant
          or to  observe  any  instructions  given by  Tenant  relative  to such
          reletting.  Also,  in any such case,  Landlord may change the locks or
          other entry devices of the Premises and make repairs,  alterations and
          additions  in or to the  Premises  and  redecorate  same to the extent
          deemed by  Landlord  necessary  or  desirable,  and Tenant  shall upon
          written demand pay the cost thereof together with Landlord's  expenses
          of reletting,  including  without  limitation,  brokerage  commissions
          payable to  Landlord's  agent or to others.  Landlord  may collect the
          rents  from any such  reletting  and apply the same to the  payment of
          expenses  of reentry,  redecoration,  repair and  alterations  and the
          reasonable  expenses of reletting and the excess or residue  remaining
          to the  payment of Rent and other sums in this  Lease  provided  to be
          paid by Tenant and not theretofore  paid by acceleration or otherwise,
          and any such excess or residue  shall  operate  only as an  offsetting
          credit  against  the  amount of Rent and other sums then due and owing
          or, at  Landlord's  option,  shall be refunded to Tenant to the extent
          paid as a result of  acceleration or shall be applied as an offsetting
          credit against Rent and other sums thereafter becoming due and payable
          hereunder;  provided  that in no event  shall  Tenant be entitled to a
          credit  on  its   indebtedness  to  Landlord  or  refunds  of  amounts
          accelerated  in excess of the aggregate of the amount paid as a result
          of  acceleration  and the amount would have been payable by Tenant for
          the period for which the credit to Tenant is being determined,  had no
          default occurred. No such reentry, repossession, repairs, alterations,
          additions or relenting  shall operate to release Tenant in whole or in
          part from any of Tenant's obligations hereunder,  and Landlord may, at
          any time  and from  time to time,  sue and  recover  judgment  for any
          deficiencies  from time to time remaining after the  application  from
          time to time of the proceeds of any such reletting.

                    (iii) Landlord,  without  thereby waiving such default,  may
          cure the same for the account  and at the  expense of Tenant,  without
          notice in a case of  emergency,  as determined by Landlord in its sole
          discretion,  or in case of  correction  of a  dangerous  or  hazardous
          condition,  and in any other case if such default  continues after ten
          (10) days from the date of the giving by Landlord to Tenant of written
          notice of such default or of intention to cure.  Bills for any expense
          incurred  by  Landlord  in  connection  with any such  performance  by
          Landlord  shall be for the  account  of  Tenant,  and shall be due and
          payable in  accordance  with the terms of said bills,  and if not paid
          when due, the amounts thereof shall become immediately due and payable
          as Additional Rent under this Lease.


25.  EXPENSES OF ENFORCEMENT.
- ---  ------------------------

          Tenant shall pay upon demand all  Landlord's  reasonable and customary
costs,  charges and expenses  including the fees and  out-of-pocket  expenses of
counsel,  agents and others retained by Landlord incurred in enforcing  Tenant's
obligations hereunder or incurred by Landlord in any litigation,  negotiation or
transaction in which Tenant causes Landlord  without  Landlord's fault to become
involved or concerned.


26.  COVENANT OF QUIET ENJOYMENTMENT.
- ---  --------------------------------

          Landlord  covenants  that  Tenant,  on paying  the Rent,  charges  for
Services  and other  payments  herein  reserved  and on keeping,  observing  and
performing all the other terms, covenants, conditions, provisions and agreements
herein contained on the part of Tenant to be kept, observed and performed shall,
during the Term, peaceably and quietly have, hold and enjoy the Premises subject
to the terms,  covenants,  conditions,  provision and agreements hereof, without
hindrance  or ejection by any persons  lawfully  claiming  by,  through or under
Landlord,  the Foregoing  covenant of quiet enjoyment being in lieu of any other
covenant, expressed or implied.


27.      SECURITY DEPOSIT
- ---      ----------------

          Tenant hereby  deposits with Landlord the sum of the Security  Deposit
specified in Paragraph. 1 hereof (hereinafter referred to as  "Collateral"),  as
security  for the prompt,  full and faithful  performance  by Tenant of each and
every  provision  of this  Lease and of all  obligations  of  Tenant  hereunder.
Landlord agrees to deposit the Collateral in an interest bearing account.

          A. If  Tenant  fails  to  perform  any of its  obligations  hereunder,
Landlord may use,  apply or retain the whole or any part of the  Collateral  for
the  payment  of (i) any Rent or other sums of money  which  Tenant may not have
paid  when  due,  (ii) any sum  expended  by  Landlord  on  Tenant's  behalf  in
accordance  with the  provisions  of this  Lease,  and/or  (iii)  any sum  which
Landlord  may  expend or be required  to expend by reason of  Tenant's  default,
including, without limitation, any damage or deficiency in or from the relenting
of the Premises as provided in Paragraph 24. The use,  application  or retention
of p the  Collateral,  or any portion  thereof,  by  Landlord  shall not prevent
Landlord from  exercising any other right or remedy provided by this Lease or by
law (it being  intended  that  Landlord  shall not first be  required to proceed
against the Collateral) and shall not operate as a limitation on any recovery to
which  Landlord may otherwise be entitled.  If any portion of the  Collateral is
used,  applied or retained by Landlord for the purposes set forth above,  Tenant
agrees,  within ten (10) days after written demand therefor is made by Landlord,
to deposit cash with Landlord in an amount  sufficient to restore the Collateral
to its original amount.

          B. If  Tenant  shall  fully  and  faithfully  comply  with  all of the
provisions  of this Lease,  the  Collateral,  or any balance  thereof,  shall be
returned to Tenant,  with  interest  accrued on the  Collateral,  or any balance
thereof held by Landlord from time to time,  after the expiration of the Term or
upon any later date after which Tenant has vacated the Premises.  In the absence
of evidence  satisfactory to Landlord of my permitted assignment of the right to
receive the  Collateral,  or of the  remaining  balance,  thereof,  Landlord may
return the same to the named Tenant herein regardless of one or more assignments
of Tenant's interest in this Lease or the Collateral.  In such event,  upon. the
return of the Collateral,  or the remaining balance thereof to the named Tenant,
Landlord  shall be completely  relieved of liability  under this Paragraph 27 or
otherwise with respect to the Collateral.

          C.  Tenant  acknowledges  that  Landlord  has the right to transfer or
mortgage  its  interest in the  Premises  and the Building and in this Lease and
Tenant agrees that in the event of any such transfer or mortgage, Landlord shall
have the right to  transfer  or  assign  the  Collateral  to the  transferee  or
mortgagee. Upon such transfer or assignment,  Landlord shall thereby be released
by Tenant from all liability or obligation for the return of such Collateral and
Tenant shall look solely to such  transferee  or mortgagee for the return of the
Collateral,  such  transferee  or  mortgagee  having no greater  obligations  in
respect of the Collateral than the Landlord had.


28.  REAL ESTATE BROKER.
- ---  -------------------

          The Tenant  represents  that Tenant has dealt with (and only with) the
Broker  specified in Paragraph I hereof as broker in connection with this Lease,
and that insofar as Tenant knows,  no other broker  negotiated  this Lease or is
entitled to any commission in connection therewith.  Tenant agrees to indemnify,
defend and hold harmless  Landlord its employees and agents from and against any
claims  made by any broker or finder  other than the  Broker  named  above for a
commission or fee in connection with this Lease.

          The Landlord  represents  that Landlord has dealt with (and only with)
the Broker  specified  in Paragraph I hereof as broker in  connection  with this
Lease, and that insofar as Landlord knows, no other broker negotiated this Lease
or is entitled to any  commission in connection  therewith.  Landlord  agrees to
indemnify,  defend and hold  harmless  Tenant its  employees and agents from and
against  any  claims  made by any broker or finder  other than the Broker  named
above for a commission or fee in connection with this Lease.


29.  UNDERLYING LEASES.
- ---  ------------------

          Landlord  is the lessee of the air rights  premises  within  which the
Building is constructed pursuant to that certain Sublease (the "Sublease") dated
September  1,  1982  by and  between  a  predecessor  of  Urban  Investment  and
Development  Co.  ("Urban"),  as lessor.  Urban is the lessee of said air rights
premises and other adjacent air rights premises which  collectively are referred
to as Copley  Place,  pursuant to that certain  Amended and Restated  Lease (the
"Underlying  Lease")  dated  January  31,  1980  by and  between  Urban  and the
Massachusetts Turnpike Authority ("MTA"), as lessor.

          Landlord   hereby   gives  notice  to  Tenant  that  it  supports  the
Affirmative Action and Resident Preference goals set forth on Exhibit G attached
hereto, and encourages Tenant, but Tenant is not obligated, to pursue such goals
in  Tenant's  own  employment  practices.  In  connection  with  hiring  to fill
permanent  jobs at the  Premises,  Tenant  shall not  discriminate  against  any
employee or applicant for employment  because of race,  color,  religious creed,
national origin, age or sex. Tenant shall comply to the extent applicable,  with
Title VII of the U.S.  Civil  Rights  Act and  M.G.L.  c.15IB  with  respect  to
employment at the Premises.


30.  NOTICE TO MORTGAGEE AND GROUND LESSOR.
- ---  --------------------------------------

          After receiving  notice from any person,  firm or other entity that it
holds a mortgage which includes the Premises, the Building or the Office Section
as part of the  mortgaged  premises,  or that it is the  ground  lessor  under a
ground lease (which term shall  include the  Underlying  Lease and the Sublease)
with Landlord,  as ground lessee,  which includes the Premises,  the Building or
the Office  Section as part of the  demised  premises,  no notice from Tenant to
Landlord shall be effective unless and until a copy of the same is given to such
holder or ground  lessor,  and the curing of any of Landlord's  defaults by such
holder or ground lessor shall be treated as performance by Landlord. Such holder
or ground  lessor  shall be given  such  reasonable  time as may be necessary to
effect such cure or to foreclose the mortgage or terminate the ground lease,  as
the case may be. For the purposes of Paragraph 21, this Paragraph 30,  Paragraph
31 and  Paragraph  34, the term  "mortgage"  includes a mortgage  on a leasehold
interest of Landlord (but not one on Tenant's leasehold interest).


31.  ASSIGNMENT OF RENTS.
- ---  --------------------

          With reference to any assignment by Landlord of Landlord's interest in
this Lease, or the rents payable hereunder,  conditional in nature or otherwise,
which assignment is made to the holder of a mortgage or ground lease (which term
shall include the Underlying  Lease and the Sublease) on property which includes
the Premises, the Building or the Office Section, Tenant agrees:

                    (i)  that  the  execution  thereof  by  Landlord,   and  the
          acceptance  thereof  by the  holder of such  mortgage,  or the  ground
          lessor,  shall  never be treated as an  assumption  by such  holder or
          ground lessor of any of the obligations of Landlord hereunder,  unless
          such  holder,  or ground  lessor,  shall,  by notice  sent to  Tenant,
          specifically otherwise elect; and

                    (ii) that, except as aforesaid, such holder or ground lessor
          shall be treated as having assumed  Landlord's  obligations  hereunder
          only upon a foreclosure  of such  holder's  mortgage and the taking of
          possession of the  Premises,  or in the case of a ground  lessor,  the
          assumption of Landlord's  position hereunder by such ground lessor. In
          no event shall the  acquisition  of title to the Building and the land
          on which the same is  located  by a  purchaser  which,  simultaneously
          therewith,  leases the entire Building or such land back to the seller
          thereof be treated as an assumption, by operation of law or otherwise,
          of Landlord's obligations  hereunder,  but Tenant shall look solely to
          such seller lessee,  and its  successors  from  time to time in title,
          for  performance  of  Landlord's  obligations  hereunder.  In any such
          event,  this Lease  shall be subject and  subordinate  to the lease to
          such seller. For all purposes, such seller-lessee,  and its successors
          in title,  shall be the landlord hereunder unless and until Landlord's
          position shall have been assumed by such purchaser-lessor.


32.  PERSONAL PROPERTY TAXES.
- ---  ------------------------

          Tenant shall pay all taxes which may be lawfully charged, assessed, or
imposed upon all fixtures and equipment of every type and also upon all personal
property  in the  Premises,  and  Tenant  shall pay all  license  fees which may
lawfully be imposed upon the business of Tenant conducted upon the Premises.


33.  MISCELLANEOUS.
- ---  --------------


          A. Rights  Cumulative.  All rights and remedies of Landlord under this
Lease shall be  cumulative  and none shall exclude any other rights and remedies
allowed by law.  All rights and  remedies  of Tenant  under this Lease  shall be
cumulative and none shall exclude any other rights and remedies  allowed by law,
except as otherwise provided herein.

          B. Interest.  All payments becoming due under this Lease and remaining
unpaid when due shall bear  interest  until paid at the rate of two percent (2%)
per annum  above the prime  rate of  interest  charged  from time to time by The
First  National Bank of Boston (but in no event at a rate which is more than the
highest rate which is at the time lawful in the Commonwealth of Massachusetts).

          C.  Terms.  The  necessary  grammatical  changes  required to make the
provisions  hereof apply either to  corporations or partnerships or individuals,
men or women,  as the case may require,  shall in all cases be assumed as though
in each case fully expressed.

          D. Binding  Effect.  Each of the provisions of this Lease shall extend
to and shall, as the case may require,  bind or inure to the benefit not only of
Landlord  and of Tenant,  but also of their  respective  successors  or assigns,
provided this clause shall not permit any  assignment by Tenant  contrary to the
provisions of Paragraph 17 hereof. All indemnities,  covenants and agreements of
Tenant  contained  herein  shall inure to the benefit of  Landlord's  agents and
employees.

          E.  Lease  Contains  All  Terms.  All  of  the   representations   and
obligations  of Landlord  and Tenant are  contained  herein and in the  Exhibits
attached hereto,  and no  modification,  waiver or amendment of this Lease or of
any of its  conditions  or provisions  shall be binding upon Landlord  unless in
writing signed by Landlord or by a duly authorized  agent of Landlord  empowered
by a written authority signed by Landlord. Furthermore, no modification,  waiver
or amendment of this Lease or of any of its  conditions or  provisions  shall be
binding upon Tenant unless in writing  signed by Tenant or by a duly  authorized
agent of Tenant empowered by a written authority signed by Tenant.

          F. Delivery for Examination.  Submission of this Lease for examination
shall not bind Landlord in any manner,  and no lease or  obligations of Landlord
shall  arise until this  instrument  is signed by both  Landlord  and Tenant and
delivery is made to each.

          G. No Air  Rights.  No  rights to any view or to light or air over any
property,  whether  belonging  to Landlord or any other  person,  are granted to
Tenant by this Lease.

          H.  Modification of Lease. If any lender  requires,  as a condition to
its lending funds the repayment of which is to be secured by a mortgage or trust
deed on the Premises and Building or either, that certain  modifications be made
to this Lease, which modifications will not require Tenant to pay any additional
amounts or  otherwise  change  materially  the rights or  obligations  of Tenant
hereunder,   Tenant  shall,  upon  Landlord's   request,   execute   appropriate
instruments effecting such modifications.

          I. Intentionally Deleted.

          J. Transfer of Landlord's Interest.  Tenant acknowledges that Landlord
has the right to transfer its interest in the Premises,  the Office  Section and
the Building and in this Lease,  and Tenant agrees that in the event of any such
transfer Landlord shall  automatically be released from all liability under this
Lease and Tenant agrees to look solely to such transferee for the performance of
Landlord's obligations hereunder.  Tenant further acknowledges that Landlord may
assign its interest in this Lease to a mortgage  lender as  additional  security
provided that such an assignment shall not release Landlord from its obligations
hereunder  and that Tenant shall be entitled to continue to look to Landlord for
the performance of its obligations hereunder.

          K. Landlord's Title. Landlord's title is and always shall be paramount
to the title of Tenant.  Nothing herein contained shall empower Tenant to commit
or engage in any act which can, shall or may encumber the title of Landlord.

          L.  Prohibition  Against  Recording.   Neither  this  Lease,  nor  any
memorandum,  affidavit or other writing with respect thereto,  shall be recorded
by Tenant or by anyone  acting  through,  under or on behalf of Tenant,  and the
recording  thereof in violation of this provision shall make this Lease null and
void at Landlord's election.

          M.  Captions.  The captions of paragraphs  and  subparagraphs  are for
convenience only and shall not be deemed to limit, construe, affect or alter the
meaning of such paragraphs or subparagraphs.

          N. Covenants and Condition.  All of the covenants of Tenant  hereunder
shall be deemed and construed to be "conditions", if Landlord so elects, as well
as  "covenants"  as  though  the  words  specifically  expressing  or  importing
covenants and conditions were used in each separate instance.

          O. Only Landlord/Tenant Relationship.  Nothing contained in this Lease
shall be deemed or  construed  by the  parties  hereto or by any third  party to
create the relationship of principal and agent,  partnership,  joint venturer or
any association  between Landlord and Tenant, it being expressly  understood and
agreed that neither the method of computation of Rent nor any act of the parties
hereto shall be deemed to create any  relationship  between  Landlord and Tenant
other than the relationship of landlord and tenant.

          P.  Application  of Payments.  Landlord  shall have the right to apply
payments  received from Tenant  pursuant to this Lease  (regardless  of Tenant's
designation of such payments) to satisfy any obligations of Tenant hereunder, in
such order and amounts as Landlord in its sole discretion may elect.

          Q. Definition of Landlord.  All indemnities,  covenants and agreements
of Tenant  contained  herein  which inure to the  benefit of  Landlord  shall be
construed to also inure to the benefit of Landlord's  agents and  employees.

          R. Time of  Essence.  Time is of the essence of this Lease and each of
its provisions.

          S.  Governing Law.  Interpretation  of this Lease shall be governed by
the law of the Commonwealth of Massachusetts.

          T. Partial Invalidity.  If any term,  provision or condition contained
in this Lease shall, to any extent, be invalid or  unenforceable,  the remainder
of this  Lease (or the  application  of such term,  provision  or  condition  to
persons or  circumstances  other than those in respect of which it is invalid or
unenforceable)  shall not be  affected  thereby,  and each and every other term,
provision  and  condition  of this Lease shall be valid and  enforceable  to the
fullest extent possible permitted by law.

          U. Size of Premises.  The size of Premises  will be  determined on the
basis of the  standards set forth in Exhibit E attached  hereto.  With regard to
Base Rent,  Operating Expenses,  and with regard to all other payments which are
computed based upon the rentable area of the Premises, it is understood that the
amounts payable as set forth in this Lease are predicated upon assumed  rentable
area set  forth in this  Lease.  Not  later  than  ninety  (90)  days  after the
Commencement  Date,  an exact  measurement  of the rentable area of the Premises
shall  be made in  accordance  with  Exhibit  E, and if said  measurement  shall
indicate  rentable area different from that recited in this Lease,  Landlord and
Tenant shall promptly  execute a supplemental  instrument  adjusting the amounts
payable hereunder to conform to the exact  measurements.  Such adjustments shall
be made by  multiplying  the amount  subject to  adjustment  by a fraction,  the
numerator  of  which  is the  actual  rentable  area  of the  Premises  and  the
denominator  of which is the rentable area of the Premises  originally set forth
herein.  Any  payment  due from  either  party to the  other as a result  of any
adjustments  made hereunder shall be paid promptly upon rendition of a statement
by the party entitled to additional Rent, or Rent refund as the case may be.

34.  NOTICES
- ---  -------

          All  notices  to be given  under this  Lease  shall be in writing  and
either hand  delivered;  delivered  by  reputable  overnight  courier,  delivery
acknowledged by recipient;  or deposited in the United States mail, certified or
registered mail with return receipt  requested,  postage  prepaid,  addressed as
follows:

          A. If to Landlord:

                    c/o Urban Retail Properties
                    Suite 600
                    Four Copley Place
                    Boston, Massachusetts 02116
                    Attn: Building Manager

             with copies to:

                    Urban Retail Properties
                    Suite 1300
                    900 North Michigan Avenue
                    Chicago, Illinois 60611-1575
                    Attn: Law Department

or to such  other  person or such other  address  designated  by notice  sent by
Landlord or Tenant, and as provided in Paragraph 30 of this Lease.

          B. If to Tenant:

                    OXIGENE, Inc.
                    I 10 East 59th Street, 29th Floor
                    New York, N.Y. 10022
                    Attn:   Vice President

          After receiving  notice from any person,  firm or other entity that it
holds a mortgage which includes the Building as part of the mortgaged  premises,
no notice from Tenant to Landlord shall be effective  unless and until a copy of
the same is given to such holder,  and the curing of any of Landlord's  defaults
by such holder shall be treated as performance by Landlord. Such holder shall be
given  such  reasonable  time as may be  necessary  to  effect  such  cure or to
foreclose  the  mortgage,  as the case may be. For the purposes of Paragraph 21,
Paragraph 30, Paragraph 31 and this Paragraph 34, the term mortgage"  includes a
mortgage on a leasehold  interest of Landlord (but not one on Tenant's leasehold
interest).

          Notice by mail  shall be  deemed to have been  given as of the date of
mailing as  aforesaid,  but for purposes of computing  the period during which a
party may cure notice shall be deemed to have been given three (3) business days
after mailing.  Notice by hand delivery or reputable  overnight courier shall be
deemed to have been given at the time of delivery.

35.  LIMITATION ON LIABILITY.
- ---  ------------------------

          It  is  expressly  understood  and  agreed  by  Tenant  that  none  of
Landlord's  covenants,  undertakings  or  agreements  are  made or  intended  as
personal covenants,  undertakings or agreements by Landlord or its partners, and
any  liability  for  damage or breach or  nonperformance  by  Landlord  shall be
collectible  only out of  Landlord's  interest in the  Building  and no personal
liability  is assumed  by, nor at any time may be asserted  against,  Landlord's
partners or any of Landlord's  directors,  officers,  agents,  employees,  legal
representatives,  successors  or  assigns,  all such  liability,  if any,  being
expressly  waived and released by Tenant.  The  provisions of this  Paragraph 35
shall  expressly  be  applicable  to and  inure  to the  benefit  of  Landlord's
successors and assigns.  In no event shall Landlord or its constituent  partners
be liable for any  incidental or  consequential  damages in connection  with its
obligations  under, or any action taken by Landlord or its constituent  partners
in connection with, this Lease.

          It is  expressly  understood  and  agreed  by  Landlord  that  none of
Tenant's covenants,  undertakings or agreements are made or intended as personal
covenants,  undertakings  or  agreements  by  Tenant  or its  partners,  and any
liability for damage or breach or  nonperformance by Tenant shall be collectible
only out of Tenant's interest in the Lease and no personal  liability is assumed
by,  nor at any  time  may be  asserted  against,  Tenant's  partners  or any of
Tenant's  directors,   officers,   agents,  employees,   legal  representatives,
successors or assigns,  all such liability,  if any, being expressly  waived and
released by Landlord.  In no event shall Tenant or its  constituent  partners be
liable  for any  incidental  or  consequential  damages in  connection  with its
obligations under, or any action taken by Tenant or its constituent  partners in
connection with, this Lease.



<PAGE>
36.  LANDLORD'S DESIGNATED AGENT.
- ---  ----------------------------

          It is expressly understood and agreed by Tenant that the provisions of
this Lease may be  enforced  on behalf of  Landlord  by an agent  designated  by
Landlord  for such  purpose,  and such  enforcement  shall be equally  effective
whether in the name of Landlord or such agent.

37.  COMMENCEMENT AND TERMINATION DATES.
- ---  -----------------------------------

          If Landlord shall not have substantially completed Landlord's Work (as
set forth in the Work  Letter) by five (5) days prior to the  Commencement  Date
("Landlord's  Completion Date") so as to enable Tenant to complete Tenant's Work
(as set  forth in the Work  Letter)  then  notwithstanding  Paragraph  3 of this
Lease,  the  Commencement  Date shall be  deferred  for the number of days after
Landlord's  Completion  Date  required  for Landlord to  substantially  complete
Landlord's  Work,  and the  Termination  Date shall be extended by the number of
days by which the  Commencement  Date was so deferred;  provided,  however,  the
Commencement  Date shall not be deferred if the Premises  are not  substantially
completed by reason of any "Tenant  Delays" set forth in Paragraph K of the Work
Letter.


38.  CANCELLATION OPTION.
- ---  --------------------

          Tenant  shall have the option to cancel this Lease (the  "Cancellation
Option")  upon  notice to  Landlord  (the  "Cancellation  Notice")  of  Tenant's
exercise of the Cancellation  Option,  such Cancellation  Notice to be delivered
not less than six (6) months prior to the  "Cancellation  Date" (as  hereinafter
defined); provided, however, the Cancellation Notice, shall only be effective if
(i) Tenant is not at the time of delivery of the  Cancellation  Notice or at the
Cancellation  Date in default  of its  obligations  under  this Lease and,  (ii)
simultaneously  with the  delivery of the  Cancellation  Notice,  Tenant pays to
Landlord the Cancellation Fee (as hereinafter  defined).  The Cancellation  Date
shall be the date  which  is six (6)  months  after  Landlord's  receipt  of the
Cancellation Notice; provided, however, the Cancellation Date may not be earlier
than the last day of the thirty-sixth  (36th) full calendar month of the Term or
later  than the  Termination  Date.  The  Cancellation  Fee  shall be an  amount
determined based upon the Cancellation Date as follows: If the Cancellation Date
is on the last day of the  thirty-sixth  (36th) full calendar month of the Term,
the Cancellation Fee shall equal  Thirty-Eight  Thousand Nine Hundred Twenty and
00/100 Dollars  ($38,920.00);  If the Cancellation Date is after the last day of
the  thirty-sixth  (36th) full calendar month of the Term, the  Cancellation Fee
shall be an amount equal to Thirty-Eight Thousand Nine Hundred Twenty and 00/100
Dollars  ($38,920.00),  less Three Thousand Two Hundred  Forty-Three  and 33/100
Dollars  ($3,243.33) for every month that the  Cancellation  Date extends beyond
the thirty-sixth (36th) full calendar month of the Term.

39. CONSTRUCTION
- --- ------------

          In connection with the Tenant  Improvement Work and in accordance with
the terms of the Work Letter, an amount equal to $30.00 per rentable square foot
of the  Premises  shall be paid by the Landlord as the  Landlord's  contribution
toward  the  Tenant  Improvement  Work.  So long  as  Tenant  is not in  default
hereunder, any excess unused Construction Allowance may be credited against Base
Rent.



<PAGE>
40.  PARKING.
- ---  --------

          Tenant  shall  have  the  right  during  the Term to use up to two (2)
non-reserved  parking  spaces in the  garage  located  within  and  serving  the
Property,  subject  to payment  by Tenant  for such use at the  prevailing  rate
therefor  charged by the  operator  of the garage  from time to time;  provided,
however,  at Landlord's option, all or some of Tenant's parking may be relocated
to the  Dartmouth  Street  Garage in the  property  adjacent to the Building and
located on Dartmouth  Street,  in which  event,  the payment due for use of such
relocated  spaces  shall  be at the  prevailing  rate  charged  therefor  by the
operator of the Dartmouth Street Garage.  In the event of non-payment of parking
charges due hereunder by the Tenant,  Landlord shall have the right to terminate
Tenant's rights with respect to parking without any obligation to reinstate such
right to parking in the event Tenant attempts to resume payment for parking.


<PAGE>
          Executed as a sealed instrument as of the date first above written.


                                       LANDLORD:



                                       COPLEY PLACE ASSOCIATES
                                       NOMINEE CORPORATION

                                       By: Overseas Management, Inc.,
                                           a Delaware corporation, Agent



                                       By:-------------------------------------
                                           Paul Grant
                                           Its:--------------------------------



                                       TENANT:

                                       OXIGENE, Inc.
                                       a Delaware corporation



                                       By:-------------------------------------
                                           Its Vice President
                                           Hereunto duly authorized




                         Consent of Independent Auditors


We consent to the  incorporation  by  reference in the  Registration  Statements
(Form S-3 No.  33-95910,  Form S-3 No. 33-64968 and Form S-3 No.  333-15241) and
related Prospectuses of OXiGENE,  Inc. and the Registration  Statement (Form S-8
No.  333-05787)  pertaining to the Amended and Restated Stock  Incentive Plan of
OXiGENE,  Inc.  of our  report  dated  January  12,  1998,  with  respect to the
consolidated  financial  statements  of  OXiGENE,  Inc.  included in this Annual
Report (Form 10-K) for the year ended December 31, 1997.



                                                              ERNST & YOUNG LLP

New York, New York
April 10, 1998

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<PERIOD-START>                                 JAN-1-1997
<PERIOD-END>                                   DEC-31-1997
<CASH>                                         40,136,662
<SECURITIES>                                   0
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