BIOTIME INC
10-K405, 1999-03-31
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-K

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

                   For the fiscal year ended December 31, 1998

                                       OR

           X TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934
        For the transition period from July 1, 1998 to December 31, 1998

                         Commission file number 1-12830

                                  BioTime, Inc.
             (Exact name of registrant as specified in its charter)

             California                                 94-3127919
     (State or other jurisdiction of                 (I.R.S. Employer
       incorporation or organization)               Identification No.)

    935 Pardee Street, Berkeley, California              94710
    Address of principal executive offices)            (Zip Code)

        Registrant's telephone number, including area code (510) 845-9535

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

                           Common Shares, no par value
                                (Title of 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 voting stock held by nonaffiliates of
the  registrant  was $  124,860,000  as of March 24,  1999.  Shares held by each
executive  officer and  director and by each person who  beneficially  owns more
than 5% of the outstanding Common Shares have been excluded in that such persons
may under certain  circumstances be deemed to be affiliates.  This determination
of affiliate  status is not  necessarily  a conclusive  determination  for other
purposes.
                                   10,804,733
           (Number of Common Shares outstanding as of March 24, 1999)
                       Documents Incorporated by Reference
                                      None

<PAGE>



                                     PART I

         Statements  made in this Form 10-K  that are not  historical  facts may
constitute   forward-looking   statements   that  are   subject   to  risks  and
uncertainties  that could cause actual results to differ  materially  from those
discussed.  Words such as  "expects,"  "may,"  "will,"  "anticipates,""intends,"
"plans,"  "believes,"  "seeks,"  "estimates," and similar  expressions  identify
forward-looking   statements.  See  "Risk  Factors"  and  Note  1  to  Financial
Statements.

Item 1.  Description of Business

Overview

         BioTime,  Inc. (the  "Company" or  "BioTime")  is a  development  stage
company engaged in the research and development of synthetic  solutions that can
be used as blood plasma volume  expanders,  blood  replacement  solutions during
hypothermic (low temperature) surgery, and organ preservation solutions.  Plasma
volume  expanders  are used to treat blood loss in  surgical or trauma  patients
until blood loss becomes so severe that a transfusion  of packed red blood cells
or other blood products is required.  The Company is also developing a specially
formulated  hypothermic  blood  substitute  solution  that  would have a similar
function  and  would be used for the  replacement  of very  large  volumes  of a
patient's blood during cardiac  surgery,  neurosurgery  and other surgeries that
involve lowering the patient's body temperature to hypothermic levels.

         The   Company's   first  three  blood  volume   replacement   products,
Hextend,(R)  PentaLyte,(R)  and HetaCool,TM have been formulated to maintain the
patient's tissue and organ function by sustaining the patient's fluid volume and
physiological  balance.  Various  colloid  and  crystalloid  products  are being
marketed by other  companies  for use in  maintaining  patient  fluid  volume in
surgery  and trauma  care,  but the use of those  solutions  can  contribute  to
patient morbidity,  including  conditions such as hypovolemia,  edema,  impaired
blood clotting, acidosis, and other biochemical imbalances.  Hextend, PentaLyte,
and HetaCool contain  constituents  that may prevent or reduce the physiological
imbalances that can cause those problems.  The Company's products do not contain
albumin.  Albumin  produced from human plasma is also currently used as a plasma
expander, but it is expensive and subject to supply shortages,  and a recent FDA
warning has  cautioned  physicians  about the risk of  administering  albumin to
seriously ill patients.

         Based upon the results of its clinical studies and laboratory research,
the Company has determined that in many emergency care and surgical applications
it is not  necessary  for a plasma  volume  expander to include  special  oxygen
carrying  molecules  to  replace  red blood  cells.  Therefore,  the  Company is
developing  formulations  that do not use costly and  potentially  toxic  oxygen
carrying molecules such as synthetic hemoglobin and perfluorocarbons.

         The Company has submitted a New Drug Application  ("NDA") to the United
States Food and Drug Administration ("FDA"),  seeking approval to market Hextend
in the United  States.  The FDA has  completed  its review of the NDA and during
November  1998 BioTime  received an action letter from them  requesting  several
clarifications.  BioTime has  responded  to the FDA's  request and is  presently
awaiting  their  approval.  

                                       2
<PAGE>



The NDA includes data from the Company's Phase III clinical trials, in which the
primary endpoints were successfully met when Hextend was used as a plasma volume
expander in surgery. An important goal of the Hextend development program was to
produce a product that can be used in multi-liter  volumes to treat patients who
have lost a large volume of blood.  An average of 1.6 liters of Hextend was used
in the clinical trials, and volumes ranging from two to five liters were used in
some of the higher  blood loss cases.  The safety  related  secondary  endpoints
targeted in the study included those involving coagulation. The Company believes
that the low  incidence  of  adverse  events  related to blood  clotting  in the
Hextend patients  demonstrates that Hextend may be safely used in large amounts.
However,  the FDA will make its own  evaluation  of the clinical  trial data and
there is no assurance that the FDA will approve the Company's NDA.

         BioTime and Abbott Laboratories  ("Abbott") have entered into a License
Agreement  under  which  BioTime  granted  to Abbott  an  exclusive  license  to
manufacture and sell Hextend in the United States and Canada for all therapeutic
uses other than those  involving  hypothermic  surgery,  or the  replacement  of
substantially all of a patient's circulating blood volume.  BioTime has retained
all rights to  manufacture,  sell or license  Hextend and other  products in all
other countries.

         Under the  License  Agreement,  Abbott has agreed to pay  BioTime up to
$40,000,000  in license fees based upon  product  sales and the  achievement  of
certain  milestones.  So far, the Company has received $1,650,000 of license fee
milestone  payments.  In addition to the license fees, Abbott will pay BioTime a
royalty  on annual net sales of  Hextend.  The  royalty  rate will be 5% plus an
additional  .22% for each  $1,000,000 of total annual net sales, up to a maximum
annual  royalty rate of 36%. The royalty rate for each year will be applied on a
total  net  sales  basis so that  once the  highest  royalty  rate for a year is
determined,  that  rate will be paid with  respect  to all sales for that  year.
Abbott's  obligation  to pay  royalties  on sales of Hextend  will expire in the
United States or Canada when all patents  protecting  Hextend in the  applicable
country  expire and any third party  obtains  certain  regulatory  approvals  to
market a generic equivalent  product in that country.  Abbott has also agreed to
manufacture  Hextend  for sale by BioTime in the event that  Abbott's  exclusive
license is terminated prior to expiration.

         In order to  preserve  its rights to obtain an  exclusive  license  for
PentaLyte under the License  Agreement,  Abbott notified the Company that Abbott
will supply  BioTime with batches of PentaLyte,  characterization  and stability
studies,  and other regulatory support needed for BioTime to file for an IND and
to conduct clinical studies.

          The  Company  intends  to  enter  global  markets  through   licensing
agreements with over-seas  pharmaceutical  companies.  By licensing its products
abroad,  the  Company  will  avoid the  capital  costs and  delays  inherent  in
acquiring or establishing its own  pharmaceutical  manufacturing  facilities and
establishing an international marketing organization. A number of pharmaceutical
companies  in Europe,  Asia and other  markets  around the world have  expressed
their  interest in obtaining  licenses to  manufacture  and market the Company's
products.


                                       3
<PAGE>


Representatives of the Company and Nihon Pharmaceutical  Company, Ltd. ("Nihon")
met in Japan to discuss the  development  of BioTime  products  for the Japanese
market,  and the  development  of a clinical  trial  program to obtain  Japanese
regulatory approval.  Nihon and the Company previously signed a letter of intent
to negotiate a licensing agreement to manufacture and market BioTime products in
Japan.  Nihon is a subsidiary of Takeda  Chemical  Industries,  Japan's  largest
pharmaceutical   manufacturer.   The   Company  is   continuing   to  meet  with
representatives  of  companies  in other  territories  to discuss and  negotiate
potential agreements.

         The Company is also pursuing a global clinical trial strategy, the goal
of which is to permit the Company to obtain regulatory approval for its products
as quickly and economically as practicable. For example, the United States Phase
III clinical trials of Hextend  involved 120 patients and were completed in less
than 12 months.  Although regulatory  requirements vary from country to country,
the Company may be able to file applications for foreign regulatory  approval of
its products based upon the results of the United States clinical trials.  Based
upon  discussions  with the Canadian Bureau of  Pharmaceutical  Assessment,  the
Company plans to file for Canadian market approval based upon the results of its
United States  clinical  trials.  Regulatory  approvals  for countries  that are
members  of the  European  Union may be  obtained  through a mutual  recognition
procedure.  The Company has determined  that several member nations would accept
an application  based upon the United States clinical trials. If approvals based
upon those  trials can be obtained in the  requisite  number of member  nations,
then the Company would be permitted to market Hextend in all 16 member nations.

         The Company is  conducting a pilot study of the use of Hextend to treat
hypovolemia in geriatric patients  undergoing high blood loss surgery.  This new
clinical trial will be a double blind study  designed to compare  Hextend with a
hetastarch  in saline  solution  and is  intended to confirm and expand upon the
results of the United  States Phase III trials.  This pilot study may be used to
design larger scale trials that may be needed to obtain  regulatory  approval in
Western  Europe.  Approximately  60  patients  65 years of age or older  will be
studied.  The  geriatric  population  generally  experiences  a higher degree of
inter-operative and post-operative mortality and morbidity than younger patients
undergoing similar major surgery. The Company believes that in a study involving
geriatric  patients the advantages of Hextend will most clearly and consistently
be seen. The trial is being  conducted at the Middlesex and Royal Free Hospitals
of the University College London Hospitals in London, England.

         The Company was incorporated  under the laws of the State of California
on November 30, 1990.  The Company's  principal  office is located at 935 Pardee
Street, Berkeley, California 94710. Its telephone number at such office is (510)
845-9535.

         Hextend(R) and PentaLyte(R) are registered  trademarks,  and HetaCoolTM
is a trademark, of BioTime, Inc.


                                       4
<PAGE>


Products for Surgery, Plasma Replacement and Emergency Care

The Market for Plasma Volume Expanders

         The  Company  is  developing  Hextend,  PentaLyte,  HetaCool  and other
synthetic plasma expander solutions to treat acute blood loss that occurs during
many  kinds of  surgery.  The  solutions  could also be used by  emergency  room
physicians or by  paramedics  to treat acute blood loss in trauma  victims being
transported to the hospital.

         Approximately 10,000,000 surgeries take place in the United States each
year, and blood  transfusions are required in  approximately  2,500,000 of those
cases.  Transfusions are also required to treat patients  suffering severe blood
loss due to traumatic injury. Many more surgical and trauma cases do not require
blood  transfusions  but do  involve  significant  bleeding  that can  place the
patient  at risk of  suffering  from  shock  caused by the loss of fluid  volume
(hypovolemia) and physiological balance. Whole blood, packed red cells, or blood
plasma  generally  cannot be administered to a patient until the patient's blood
serum has been typed and sufficient  units of compatible  blood or red cells can
be  located.  Periodic  shortages  of  supply  of  donated  human  blood are not
uncommon,  and rare blood types are often difficult to locate.  The use of human
blood  products  also poses the risk of  exposing  the  patient  to blood  borne
diseases such as AIDS and hepatitis.

         Due to the risks and cost of using  human blood  products,  even when a
sufficient supply of compatible blood is available, physicians treating patients
suffering  blood loss are  generally  not permitted to transfuse red blood cells
until the patient's  level of red blood cells has fallen to a level known as the
"transfusion trigger." During the course of surgery, while blood volume is being
lost, the patient is infused with plasma volume  expanders to maintain  adequate
blood  circulation.  During  the  surgical  procedure,  red blood  cells are not
replaced until the patient has lost  approximately 45% to 50% of their red blood
cells,  thus reaching the transfusion  trigger at which point the transfusion of
red blood cells may be required.  After the transfusion of red blood cells,  the
patient may continue to  experience  blood  volume loss,  which will be replaced
with  plasma  volume  expanders.  Even in those  patients  who do not  require a
transfusion, physicians routinely administer plasma volume expanders to maintain
sufficient  fluid  volume to permit the  available  red blood cells to circulate
throughout the body and to maintain the patient's physiological balance.

         Several  units of fluid  replacement  products  are often  administered
during surgery. The number of units will vary depending upon the amount of blood
loss and the kind of plasma volume expander  administered.  Crystalloid products
must be used in larger volumes than colloid products such as Hextend.

         The plasma volume  expanders  marketed by other  companies have certain
draw backs.  The use of those  products  can  contribute  to patient  morbidity,
including  conditions  such as  hypovolemia,  edema,  impaired  blood  clotting,
acidosis, and other biochemical  imbalances.  Albumin produced from human plasma
is  expensive  and  subject to supply  shortages,  and a recent FDA  warning has
cautioned  physicians about the risk of  administering  albumin to seriously ill
patients.  In contrast,  Hextend,  PentaLyte,  and HetaCool contain constituents
that may prevent or reduce the  physiological  imbalances  that can the problems
associated  with the use of other  plasma  volume  expanders,  and  because  the
Company's products are synthetic they can be manufactured in large volumes.


                                       5
<PAGE>



The Market for Products for Hypothermic Surgery

         Approximately  400,000  coronary  bypass and other open heart surgeries
are performed in the United States annually,  and approximately  18,000 aneurysm
surgeries and 4,000 arterio-venous  malformation surgeries were performed in the
United  States  during  1989.   Those   procedures  often  require  the  use  of
cardio-pulmonary  bypass  equipment to do the work of the heart and lungs during
the surgery. During open heart surgery and surgical procedures for the treatment
of certain  cardiovascular  conditions such as large  aneurysms,  cardiovascular
abnormalities and damaged blood vessels in the brain,  surgeons must temporarily
interrupt the flow of blood through the body.  Interruption of blood flow can be
maintained  only for short periods of time at normal body  temperatures  because
many  critical  organs,  particularly  the  brain,  are  quickly  damaged by the
resultant loss of oxygen. As a result, certain surgical procedures are performed
at low temperatures  because lower body temperature helps to minimize the chance
of damage to the  patient's  organs by reducing the  patient's  metabolic  rate,
thereby  decreasing the patient's  needs during surgery for oxygen and nutrients
which normally flow through the blood.

         Current  technology  limits  the degree to which  surgeons  can lower a
patient's  temperature and the amount of time the patient can be maintained at a
low body  temperature  because  blood,  even when diluted,  cannot be circulated
through  the body at  near-freezing  temperatures.  As a result,  surgeons  face
severe time constraints in performing surgical  procedures  requiring blood flow
interruption,  and those  time  limitations  prevent  surgeons  from  correcting
certain cardiovascular abnormalities.

Hextend, PentaLyte and HetaCool

         The Company's first three blood volume replacement  products,  Hextend,
PentaLyte,  and HetaCool,  have been formulated to maintain the patient's tissue
and organ  function by sustaining the patient's  fluid volume and  physiological
balance.  Hextend,  PentaLyte,  and  HetaCool,  are  composed of a  hydroxyethyl
starch,  electrolytes,  sugar  and a buffer  in an  aqueous  base.  Hextend  and
HetaCool use a high molecular weight hydroxyethyl  starch  (hetastarch)  whereas
PentaLyte uses a low molecular weight  hydroxyethyl  starch  (pentastarch).  The
hetastarch is retained in the blood longer than the pentastarch,  which may make
Hextend and  HetaCool  the  products  of choice  when a larger  volume of plasma
expander or blood replacement  solution for low temperature surgery is needed or
where the patient's  ability to restore his own blood  proteins after surgery is
compromised.  PentaLyte,  with  pentastarch,  would be eliminated from the blood
faster than Hextend and HetaCool and might be used when less plasma  expander is
needed or where the  patient is more  capable of  quickly  restoring  lost blood
proteins.  The Company  recently  began  testing  HexaLyte,  a new plasma volume
expander that contains a low molecular weight hydroxyethyl starch and that would
be eliminated  from the body more rapidly than Hextend and HetaCool,  but not as
rapidly as  PentaLyte.  BioTime  believes  that by testing  and  bringing  these
products  to the market,  it can  increase  its market  share by  providing  the
medical community with solutions to match patients' needs.

         Results  from  certain  laboratory  tests  indicate  that  Hextend  and
PentaLyte may prove more effective at maintaining  blood calcium levels than the
leading  domestically  available  plasma  extender  when used to  replace  large
volumes  of blood.  Calcium  can be a  significant  factor in  regulating  blood
clotting  and  cardiac  function.  Results  from other in vitro tests of Hextend
indicate that Hextend does not alter the activity of a number of specific  blood
clotting factors, other than by simple hemodilution.


                                       6
<PAGE>



         BioTime has not  attempted to synthesize  potentially  toxic and costly
oxygen  carrying  molecules such as hemoglobin  because the loss of fluid volume
and  physiological  balance may  contribute  as much to shock as the loss of the
oxygen  carrying  component  of the  blood.  Surgical  and trauma  patients  are
routinely given  supplemental  oxygen and retain a substantial  portion of their
own red blood  cells.  Whole blood or packed red blood cells are  generally  not
transfused  during  surgery or in trauma care until  several  units of plasma or
plasma volume expanders have been administered and the patient's  hematocrit has
fallen  to the  transfusion  trigger.  Therefore,  the lack of  oxygen  carrying
molecules   in  the   Company's   solutions   should  not  pose  a   significant
contraindication to use.

         Experiments by BioTime  scientists  have  demonstrated  that laboratory
animals  are able to survive at normal  temperatures  and  without  supplemental
oxygen when more than two-thirds of their  circulating  blood volume is replaced
by  Hextend  and/or  PentaLyte.  When  animals  are  placed  in an  oxygen  rich
environment,  they are able to survive at normal  temperatures when even more of
their circulating blood volume is replaced by Hextend.

         Hextend  is  BioTime's  proprietary  hetastarch-based  synthetic  blood
plasma volume expander,  designed especially to treat hypovolemia in surgery and
trauma care where patients  experience a large amount of blood loss. The Company
has submitted an NDA to the FDA seeking approval to market Hextend in the United
States.  After  reviewing the NDA, the FDA sent BioTime an action letter seeking
clarification  of certain  matters.  BioTime has  responded  to the FDA's action
letter and is  awaiting  approval  of the NDA.  The NDA  includes  data from the
Company's  clinical trials in which the primary  endpoints were successfully met
when Hextend was used as a plasma volume expander in surgery.

         An important goal of the Hextend  development  program was to produce a
product that can be used in multi-liter  volumes to treat patients who have lost
a large volume of blood during  surgery or as a result of injury.  An average of
1.6 liters of Hextend was used in the clinical trials,  and volumes ranging from
two to five liters were used in some of the higher blood loss cases.  The safety
related  secondary  endpoints  targeted in the study  included  those  involving
coagulation.  The Company  believes  that the low  incidence  of adverse  events
related to blood clotting in the Hextend patients  demonstrates that Hextend may
be safely used in large amounts.  However,  the FDA will make its own evaluation
of the clinical  trial data and there is no assurance  that the FDA will approve
the Company's NDA.


                                       7
<PAGE>



         BioTime  also  plans to test  the use of  Hextend  as  cardio-pulmonary
bypass  circuit  priming  solution.  In  order to  perform  heart  surgery,  the
patient's  heart must be stopped and  mechanical  apparatus is used to oxygenate
and circulate the blood. The cardio-pulmonary  bypass apparatus requires a blood
compatible  fluid  such as Hextend  to  commence  and  maintain  the  process of
diverting  the  patient's  blood  from the  heart  and  lungs to the  mechanical
oxygenator and pump.

         BioTime   believes  that  Hextend  will  maintain  blood  pressure  and
physiological balance better than the solutions presently used as bypass priming
solutions.  Approximately  2 liters  of  Hextend  would be used for each  bypass
operation.  Based upon the number of coronary bypass operations  performed,  the
potential  market for Hextend as a bypass circuit priming solution in the United
States would be about 800,000 liters annually.

         PentaLyte is BioTime's proprietary  pentastarch-based  synthetic plasma
expander,  designed  especially for use when a faster  elimination of the starch
component  is desired  and  acceptable.  Although  Hextend  can be used in these
cases,  some  physicians  appear to prefer a solution which could be metabolized
faster and excreted earlier when the longer term protection  provided by Hextend
is  not  required.  PentaLyte  combines  the  physiologically  balanced  Hextend
formulation  with  pentastarch  that has a lower molecular  weight and degree of
substitution than the hetastarch used in Hextend.

         HetaCool is a modified formulation of Hextend. HetaCool is specifically
designed for use at low  temperatures.  Surgeons are already  using a variety of
other solutions to carry out certain limited  procedures  involving shorter term
(up to nearly  one hour)  arrest of brain  and heart  function  at  temperatures
between 15o and 25o C. However, BioTime is not aware of any fluid currently used
in medical practice or any medically-approved protocol allowing operations which
can completely replace all of a patient's blood at temperatures close to the ice
point.  The  Company  believes  that  very low  temperature  bloodless  surgical
techniques could be developed for open heart and minimally invasive closed chest
cardiovascular  surgeries,  and  removal of tumors from the brain,  head,  neck,
heart, and other areas.

         The Company is in the process of  preparing an amendment to its Hextend
IND  application  to conduct  preliminary  clinical  trials to use HetaCool as a
cardio-pulmonary   bypass   circuit   priming   solution   in  low   temperature
cardio-vascular  surgery,  as a step to preparing an amended IND  application to
conduct  clinical  trials  using  HetaCool  as a solution  to  replace  all of a
patient's  circulating blood volume during profound  hypothermic (carried out at
near-freezing  temperatures) surgical procedures.  The experimental protocol for
the planned blood replacement  clinical trial is being tested on animal subjects
at Baylor University Medical Center and Mt. Sinai Medical Center. HetaCool would
be  introduced  into the  patient's  body during the cooling  process.  Once the
patient's body  temperature is nearly ice cold, and heart and brain function are
temporarily  arrested,  the  surgeon  would  perform the  operation.  During the
surgery,  HetaCool may be circulated  throughout the body in place of blood,  or
the circulation may be arrested for a period of time if an interruption of fluid
circulation is required.  Upon  completion of the surgery,  the patient would be
slowly warmed and blood would be transfused.


                                       8
<PAGE>



         Cardiac surgeons are working to develop innovative procedures to repair
damaged  coronary  arteries  and heart  valves.  If  optically  guided  surgical
instruments  can be  inserted  into the heart  through  blood  vessels  or small
incisions,  there may be no need to open the  patient's  chest  cavity.  BioTime
believes that HetaCool may be useful in these  minimally  invasive  closed chest
cardiac  procedures  because the solution is transparent  and if it were used to
completely  replace blood at low  temperatures  it would permit  surgeons to use
their  optically  guided  instruments  inside the heart or blood vessels without
having their view obstructed by blood.  The use of BioTime's  solutions may also
allow better control over stopping and starting the heart,  as well as extending
the time  period  of such  surgeries.  BioTime  intends  to  conduct a series of
laboratory  studies  using animal  subjects to test the utility of HetaCool as a
low temperature blood substitute in such procedures.

         HetaCool  has been  used to  completely  replace  the  blood  volume of
hamsters,  dogs, pigs, and baboons at temperatures approaching freezing. Many of
these animal subjects survived long term after  hypothermic  blood  substitution
with HetaCool.  In these  laboratory  tests,  the animals' blood was replaced by
HetaCool  and they were  chilled  for one to more than four hours with deep body
temperatures between 1oC and 10oC.

         BioTime is developing a new formulation that has allowed the revival of
hamsters after as long as 6.5 hours of  hypothermic  blood  substitution  during
which time the animals' heartbeat and circulation were stopped.


Organ Transplant Products

The Market for Organ Preservation Solutions

         Organ transplant surgery is a growing field. Approximately 5,000 donors
donate organs,  and  approximately  an additional 5,000 donors donate skin, bone
and other  tissues in the United  States each year. As more surgeons have gained
the necessary  expertise and surgical  methods have been refined,  the number of
transplant  procedures  has  increased,  as has  the  percentage  of  successful
transplants.  Organ  transplant  surgeons  and  their  patients  face two  major
obstacles,  namely the shortage of available organs from donors, and the limited
amount of time that a  transplantable  organ can be kept viable between the time
it is  harvested  from  the  donor  and the  time it is  transplanted  into  the
recipient.

         The scarcity of  transplantable  organs makes them too precious to lose
and increases the importance of effective preservation  technology and products.
Current organ removal and preservation  technology  generally  requires multiple
preservation  solutions to remove and preserve  effectively  different groups of
organs.  The  removal  of one organ can impair the  viability  of other  organs.
Available  technology  does not permit  surgeons  to keep the  remaining  organs
viable within the donor's body for a  significant  time after the first organ is
removed.  Currently,  an organ  available for  transplant is flushed with an ice
cold solution  during the removal  process to deactivate  the organ and preserve
its tissues, and then the organ is transported on ice to the donee. The ice cold
solutions  currently used,  together with  transportation on ice, keep the organ
healthy for only a short  period of time.  For  example,  the  storage  time for
hearts is limited  to  approximately  six hours.  Because of the short time span
available for removal and transplant of an organ, potential organ donees may not
receive the needed organs.


                                       9
<PAGE>



         BioTime  is  seeking  to address  this  problem  by  developing  a more
effective organ  preservation  solution that will permit surgeons to harvest all
transplantable  organs from a single donor. The Company believes that preserving
the viability of all transplantable  organs and tissues  simultaneously,  at low
temperatures,  would  extend by several  hours the time span in which the organs
can be preserved prior to transplant.

         Using HetaCool for Multi-Organ Preservation.  The Company is seeking to
develop HetaCool for use as a single solution that can  simultaneously  preserve
all of a single donor's  organs.  When used as an organ  preservation  solution,
HetaCool  would be  perfused  into the  donor's  body while the body is chilled,
thereby eliminating an undesirable condition called "warm ischemia," caused when
an organ is warm while its blood supply is  interrupted.  The use of HetaCool in
conjunction  with the  chilling of the body should help to slow down the process
of organ  deterioration  by a number of hours so that a surgeon  can  remove all
organs for donation and  transplant.  The Company's  current  estimates are that
each such preservation procedure could require at least 50 liters of HetaCool.

         The Company believes that the ability to replace an animal's blood with
the Company's solution, to maintain the animal at near freezing temperatures for
several hours, and then revive the animal,  would  demonstrate that the solution
could be used for  multi-organ  preservation.  Company  scientists  have revived
animals after more than six hours of cold blood-substitution,  and have observed
heart function in animals  maintained cold and  blood-substituted  for more than
eight hours. An objective of the Company's  research and development  program is
to extend the time span in which animal  subjects can be  maintained  in a cold,
blood-substituted  state  before  revival or  removal  of organs for  transplant
purposes.  Organ  transplant  procedures  using  animal  subjects  could then be
conducted to test the effectiveness of Hextend as an organ preservative.

Long-term Tissue and Organ Banking

         The  development  of  marketable  products  and  technologies  for  the
preservation  of tissues and vital  organs for weeks and months is a  long-range
goal of the Company's  research and  development  plan. To permit such long-term
organ  banking the Company is attempting  to develop  products and  technologies
that can  protect  tissues  and organs  from the damage  that  occurs when human
tissues are subjected to subfreezing temperatures.

         HetaFreeze is one of a family of BioTime's  freeze-protective solutions
which may ultimately allow the extension of time during which organs and tissues
can be  stored  for  future  transplant  or  surgical  grafting.  In  laboratory
experiments, BioTime's proprietary freeze-protective compounds have already been
used to preserve skin when used as a whole animal perfusate.  Silver dollar size
full  thickness  shaved skin  samples have been removed  after  saturation  with
HetaFreeze  solution,  frozen at liquid  nitrogen  temperatures  and  stored for
periods  ranging  from days to weeks.  The grafts were then warmed and sewn onto
the backs of host animals.
Many of these grafts survived.


                                       10
<PAGE>



         In other  laboratory  experiments,  BioTime  scientists have shown that
animals can be revived to consciousness  after partial freezing with their blood
replaced by  HetaFreeze.  While this  technology  has not developed to an extent
that allows long term survival of the laboratory  subjects,  and their organs, a
better understanding of the effects of partial freezing could allow for extended
preservation times for vital organs, skin and blood vessels.


Other Potential Uses of BioTime Solutions

         Isolated regional perfusion of anti-cancer drugs has been used to treat
melanoma of the limbs, and inoperable  tumors of the liver. The Company believes
that  employing  such  a  procedure  while  the  patient  is  kept  in  ice-cold
blood-substitution  may  allow  high  doses  of  toxic  anti-cancer  drugs to be
directed at  inoperable  tumors  within  vital  organs.  Keeping the rest of the
patient  in a  cold,  blood  substituted  state  may  reduce  or  eliminate  the
circulation of the toxic drugs to healthy tissues.

         BioTime considers such surgical techniques to be a longer range goal of
its research and development  program for hypothermic  surgery products.  Use of
this  complex  technology  in the  practice  of  oncology  can occur  only after
ice-cold  blood-substitution  has advanced to an appropriate level of safety and
effectiveness.


Research and Development Strategy

         From  inception  through  December  31,  1998,  the  Company  has spent
$11,681,988  on research  and  development.  The  greatest  portion of BioTime's
research  and  development  efforts  have been  devoted  to the  development  of
Hextend,  PentaLyte and HetaCool for conventional  surgery,  emergency care, low
temperature  surgery,  and  multi-organ  preservation.  A lesser  portion of the
Company's  research and  development  efforts  have been  devoted to  developing
solutions  and  protocols  for  storing   organs  and  tissues  at   subfreezing
temperatures.  In the future the Company may explore other  applications  of its
products and technologies,  including cancer chemotherapy. As the first products
achieve  market  entry,  more  effort will be expended to bring the next tier of
products to maturity.

         One major focus of the Company's  research and  development  effort has
been on products and  technology to extend the time animals can be kept cold and
blood-substituted,  and then revived without  physical  impairment.  An integral
part of that effort has been the  development  of techniques  and  procedures or
"protocols" for use of the Company's products.  A substantial amount of data has
been accumulated through animal tests, including the proper surgical techniques,
drugs and  anesthetics,  the temperatures and pressures at which blood and blood
replacement  solutions  should be removed,  restored  and  circulated,  solution
volume,  the temperature range, and times, for maintaining  circulatory  arrest,
and the rate at which the subject should be rewarmed.


                                       11
<PAGE>



         Experiments  intended  to  test  the  efficacy  of  the  Company's  low
temperature blood replacement  solutions and protocols for surgical applications
involve  replacing the animal's blood with the Company's  solution,  maintaining
the  animal in a cold  blood-substituted  state  for a period of time,  and then
attempting  to revive  the  animal.  Experiments  for  multi-organ  preservation
involve the maintenance of the animal subjects at cold  temperatures  for longer
periods of time than would be required for many surgical applications,  followed
by  transplant  procedures to test the viability of one or more of the subject's
vital organs.

         The Company is conducting  experiments  at hospital and medical  school
research facilities. These collaborative research programs are testing solutions
and  protocols  developed  in the  Company's  laboratories  and,  in some cases,
comparing the efficacy of the Company's products with commercially available FDA
approved  products  manufactured  by other  companies.  The  Company  intends to
continue to foster relations with research hospitals and medical schools for the
purpose of conducting  collaborative  research projects because it believes that
such projects will introduce the Company's  potential products to members of the
medical  profession and provide the Company with objective  product  evaluations
from independent research physicians and surgeons.


Licensing

         On April 23,  1997,  the  Company  and  Abbott  entered  into a License
Agreement  under which the  Company  granted to Abbott an  exclusive  license to
manufacture and sell Hextend in the United States and Canada for all therapeutic
uses other than those  involving  hypothermic  surgery where the patient's  body
temperature  is  lower  than  12EC   ("Hypothermic   Use"),  or  replacement  of
substantially  all  of  a  patient's   circulating  blood  volume  ("Total  Body
Washout").  The Company has retained all rights to manufacture,  sell or license
Hextend and other products in all other countries.

         Under the License Agreement, Abbott has agreed to pay the Company up to
$40,000,000  in license fees, of which  $1,650,000 has been paid to date, and an
additional  $850,000 will become payable in installments upon the achievement of
specific milestones  pertaining to the approval of the Company's NDA for Hextend
and the  commencement  of sales of the product.  Up to $37,500,000 of additional
license fees will be payable based upon annual net sales of Hextend, at the rate
of 10% of annual  net sales if annual  net  sales  exceed  $30,000,000  or 5% if
annual net sales are between  $15,000,0000 and $30,000,000.  Abbott's obligation
to pay licensing  fees on sales of Hextend will expire on the earlier of January
1, 2007 or, on a country by country basis, when all patents  protecting  Hextend
in the applicable  country expire or any third party obtains certain  regulatory
approvals to market a generic equivalent product in that country.

         In addition to the license fees,  Abbott will pay the Company a royalty
on total  annual  net  sales of  Hextend.  The  royalty  rate will be 5% plus an
additional .22% for each $1,000,000 of annual net sales, up to a maximum royalty
rate of 36%. The royalty rate for each year will be applied on a total net sales
basis so that once the highest royalty rate for a year is determined,  that rate
will be paid with respect to all sales for that year. Abbott's obligation to pay
royalties  on sales of Hextend  will expire in the United  States or Canada when
all patents  protecting  Hextend in the applicable  country expire and any third
party  obtains  certain  regulatory  approvals  to market a  generic  equivalent
product in that country.


                                       12
<PAGE>



         Abbott has agreed  that the  Company  may  convert  Abbott's  exclusive
license to a  non-exclusive  license or may  terminate  the license  outright if
certain  minimum  sales and royalty  payments are not met. In order to terminate
the license  outright,  the  Company  would pay a  termination  fee in an amount
ranging from the  milestone  payments made by Abbott to an amount equal to three
times prior year net sales,  depending upon when  termination  occurs.  Abbott's
exclusive license also may terminate, without the payment of termination fees by
the Company, if Abbott fails to market Hextend. Abbott has agreed to manufacture
Hextend for sale by the Company in the event that Abbott's  exclusive license is
terminated in either case.

         Abbott has a right to acquire  additional  licenses to manufacture  and
sell the  Company's  other  plasma  expander  products in the United  States and
Canada. If Abbott exercises its right to acquire a license to sell such products
for uses other than  Hypothermic  Surgery or Total Body Washout,  in addition to
paying  royalties,  Abbott will be obligated to pay a license fee based upon the
Company's direct and indirect research, development and other costs allocable to
the new  product.  If Abbott  desires  to  acquire a license  to sell any of the
Company's  products for use in  Hypothermic  Surgery or Total Body Washout,  the
license  fees and other  terms of the  license  will be subject  to  negotiation
between the  parties.  For the purpose of  determining  the  applicable  royalty
rates, net sales of any such new products  licensed by Abbott will be aggregated
with sales of Hextend.  If Abbott does not  exercise  its right to acquire a new
product license,  the Company may manufacture and sell the product itself or may
license others to do so.

         In order to  preserve  its rights to obtain an  exclusive  license  for
PentaLyte under the License  Agreement,  Abbott notified the Company that Abbott
will supply  BioTime with batches of PentaLyte,  characterization  and stability
studies,  and other regulatory support needed for BioTime to file for an IND and
to conduct clinical studies.

         The foregoing  description  of the License  Agreement is a summary only
and is  qualified  in all  respects by reference to the full text of the License
Agreement.

         The Company is also  discussing and negotiating  prospective  licensing
arrangements  with  other  pharmaceutical  companies,  some of  which  have  the
capacity to produce and market the  Company's  products in various  countries In
licensing   arrangements  that  include  marketing  rights,   the  participating
pharmaceutical  company  would be  entitled  to  retain a large  portion  of the
revenues  from  sales to end users and  would pay the  Company a royalty  on net
sales. There is no assurance that any such additional arrangements can be made.


                                       13
<PAGE>



Manufacturing

Facilities Required

         The Company has  sufficient  equipment,  space and personnel  needed to
synthesize the quantities of its products used in its research activity, but the
Company does not have  facilities  to  manufacture  the  solution in  commercial
quantities,  or under "good  manufacturing  practice"  required by the FDA.  Any
products that are used in clinical trials for FDA approval, or that are approved
by the FDA for  marketing,  will  have to be  manufactured  according  to  "good
manufacturing  practices"  at a  facility  that has passed  FDA  inspection.  In
addition, any products that are approved by the FDA will have to be manufactured
in  commercial  quantities,  and with  sufficient  stability  to  withstand  the
distribution  process,  and in compliance with such federal and state regulatory
requirements as may be applicable. The active ingredients and component parts of
the products  must be either USP or themselves  manufactured  according to "good
manufacturing practices".

         Abbott has  provided  Hextend  manufactured  under  good  manufacturing
practices  for  use in  the  Company's  clinical  trials,  and  Abbott  has  the
facilities  to  manufacture  Hextend and other  Company  products in  commercial
quantities.  If Abbott chooses not to obtain a license to manufacture and market
another BioTime  product,  or to manufacture it under contract for BioTime,  the
Company will need to enter into licensing or product manufacturing  arrangements
with another established  pharmaceutical  company, or else the Company will have
to acquire its own manufacturing facility.

         Acquiring  a   manufacturing   facility   would   involve   significant
expenditure  of time and money for  design  and  construction  of the  facility,
purchasing  equipment,  hiring and training a production  staff,  purchasing raw
material and attaining an efficient  level of  production.  Although the Company
has not determined the cost of constructing  production facilities that meet FDA
requirements,  it  expects  that the cost  would  be  substantial,  and that the
Company would need to raise  additional  capital in the future for that purpose.
There can be no  assurance  that the Company  will be able to obtain the capital
required for the acquisition of production  facilities.  To avoid the incurrence
of those  expenses and delays,  the Company is seeking  contract  and  licensing
arrangements with established pharmaceutical companies for the production of the
Company's products, but there can be no assurance that satisfactory arrangements
will be made.

Raw Materials

         Although  most  ingredients  in the  products  being  developed  by the
Company are readily obtainable from multiple sources,  the Company knows of only
a few  manufacturers  of the  hydroxyethyl  starches  that  serve as the  active
ingredient in Hextend,  PentaLyte and HetaCool. Abbott presently has a source of
supply of the hydroxyethyl starch used in Hextend,  PentaLyte and HetaCool,  and
has agreed to maintain a supply  sufficient to meet market demand for Hextend in
the United States and Canada. McGaw, Inc., a wholly owned subsidiary of B. Braun
Melsungen AG, a private German company selling  intravenous  solutions and other
medical products around the world,  has produced Hextend for BioTime's  clinical
trials  and  can  produce  the  pentastarch  used  in  PentaLyte.


                                       14
<PAGE>



In order to  manufacture  its  products for  overseas  markets,  or products not
presently  licensed to Abbott for the United  States and Canadian  markets,  the
Company or a licensee would have to secure a supply or production agreement with
one or more  of the  known  hydroxyethyl  starch  manufacturers,  but if such an
agreement could not be obtained, the Company or a licensee would have to acquire
a manufacturing  facility and the technology to produce the hydroxyethyl  starch
according  to  good  manufacturing   practices.  The  possibility  of  producing
hydroxyethyl  starches through a co-operative  effort with a small,  independent
starch  manufacturer has also been  considered.  The Company might have to raise
additional  capital to participate  in the  development  and  acquisition of the
necessary production technology and facilities.

         If  arrangements  cannot be made for a source of supply of hydroxyethyl
starch,  the Company would have to reformulate  its solutions to use one or more
other  starches that are more readily  available.  In order to  reformulate  its
products,  the Company would have to perform new laboratory testing to determine
whether the alternative starches could be used in a safe and effective synthetic
plasma volume expander,  low temperature blood substitute or organ  preservation
solution. If needed, such testing would be costly to conduct and would delay the
Company's product development  program,  and there is no certainty that any such
testing would  demonstrate  that an alternative  ingredient,  even if chemically
similar to the one currently used, would be as safe or effective.


Marketing

         The Company's  proposed  products and services are intended for sale to
hospitals,  medical centers,  and physicians engaged in the practice of specific
areas  of  medicine,  including  transplantation,  neurosurgery,  cardiovascular
surgery,  anesthesiology,  oncology, emergency room and trauma care and critical
care. The Company  intends to license its products to  pharmaceutical  companies
that have their own,  well  established  marketing  and sales  organizations.  A
license to market  Hextend in the United  States and Canada has been  granted to
Abbott,  and the Company is discussing  product  licensing  arrangements  with a
number of companies for over-seas  markets.  Although  such  arrangements  could
permit  the  Company  to  receive   revenues  from  the  sale  of  its  products
expeditiously  and with lower  costs,  the  Company  would  have to share  those
revenues  with  the  participating  pharmaceutical  companies.  There  can be no
assurance that any additional  pharmaceutical companies will be willing to enter
into marketing  arrangements on terms acceptable to the Company.  If the Company
does not enter into licensing or other arrangements for the sale of a product in
a  particular  market,  the Company  would have to establish  its own  marketing
organization.

         Published studies and presentations by physicians who have participated
in clinical trials or laboratory studies of Company products may be used as part
of the Company's  product marketing  efforts.  The Company also will continue to
seek   opportunities  to  conduct  research  in  collaboration  with  well-known
institutions and to demonstrate its work at scientific conventions.


                                       15
<PAGE>



Government Regulation

         The FDA  will  regulate  the  Company's  proposed  products  as  drugs,
biologicals, or medical devices, depending upon such factors as the use to which
the product will be put, the chemical  composition  and the  interaction  of the
product on the human body.  Products that are intended to be introduced into the
body, such as blood substitute  solutions for low temperature surgery and plasma
expanders,  will be  regulated  as drugs and will be  reviewed  by the FDA staff
responsible for evaluating biologicals.

         The  Company's  human drug  products  will be subject to  rigorous  FDA
review and approval procedures. After testing in animals, an Investigational New
Drug (IND)  application must be filed with the FDA to obtain  authorization  for
human  testing.  Extensive  clinical  testing,  which is generally done in three
phases,  must then be undertaken at a hospital or medical  center to demonstrate
optimal use, safety and efficacy of each product in humans.  Each clinical study
is conducted  under the auspices of an  independent  Institutional  Review Board
("IRB"). The IRB will consider,  among other things, ethical factors, the safety
of human subjects and the possible  liability of the  institution.  The time and
expense  required to perform this  clinical  testing can far exceed the time and
expense  of the  research  and  development  initially  required  to create  the
product.  No action can be taken to market any therapeutic product in the United
States until an appropriate  New Drug  Application  ("NDA") has been approved by
the FDA. Even after initial FDA approval has been obtained,  further studies may
be required to provide additional data on safety or to gain approval for the use
of a product as a treatment for clinical  indications other than those initially
targeted. In addition,  use of these products during testing and after marketing
could  reveal side effects  that could  delay,  impede or prevent FDA  marketing
approval,   resulting  in  a  FDA-ordered  product  recall,  or  in  FDA-imposed
limitations on permissible uses.

         The FDA also  regulates  the  manufacturing  process of  pharmaceutical
products and requires that a portion of the clinical  trials for new products be
conducted  using  products  produced  in  compliance  with  "good  manufacturing
practices." See "Manufacturing."

         Sales of pharmaceutical  products outside the United States are subject
to foreign  regulatory  requirements  that vary widely from  country to country.
Even if FDA  approval  has been  obtained,  approval of a product by  comparable
regulatory  authorities  of  foreign  countries  must be  obtained  prior to the
commencement of marketing the product in those  countries.  The time required to
obtain  such  approval  may be longer or  shorter  than  that  required  for FDA
approval.


Patents and Trade Secrets

         The Company holds a number of United States patents having  composition
and methods of use claims covering BioTime's  proprietary  solutions,  including
Hextend and  PentaLyte.  The most recent U.S.  patents were issued  during 1998.
Patents  covering  certain of the Company's  solutions  have also been issued in
Australia,  Israel, and South Africa.  Additional patent  applications have been
filed in the United  States and certain other  countries for Hextend,  PentaLyte
and other solutions.


                                       16
<PAGE>

         There is no assurance  that any additional  patents will be issued,  or
that  any  patents  now  held or  later  obtained  by the  Company  will  not be
successfully  challenged by third parties and declared  invalid or infringing of
third party claims.  Further,  the  enforcement  of patent rights often requires
litigation against third party infringers,  and such litigation can be costly to
pursue.

         While the Company  believes that the protection of patents and licenses
is  important  to its  business,  the Company  also will rely on trade  secrets,
know-how and continuing  technological  advancement to maintain its  competitive
position.  The Company has entered into  intellectual  property,  invention  and
non-disclosure agreements with its employees and it is the Company's practice to
enter into  confidentiality  agreements  with its  consultants.  There can be no
assurance, however, that these measures will prevent the unauthorized disclosure
or use of the  Company's  trade  secrets  and  know-how  or that  others may not
independently develop similar trade secrets and know-how or obtain access to the
Company's trade secrets, know-how or proprietary technology.  If, in the future,
the  techniques  for use of the Company's  products  become widely known through
academic  instruction  or  publication,  patent  protection  would  become  more
important as a means of protecting the Company's market share for its products.



Competition

         If successfully  developed,  the Company's  solutions will compete with
products  currently  used to treat or prevent  hypovolemia,  including  albumin,
other colloid solutions,  and crystalloid  solutions  presently  manufactured by
established  pharmaceutical  companies,  and with human blood products.  Some of
these  products,  in  particular  crystalloid  solutions,  are commonly  used in
surgery and trauma care and sell at low prices.  In order to compete  with other
products,  particularly  those that sell at lower prices, the Company's products
will have to be recognized as providing medically  significant  advantages.  The
competing   products  are  being   manufactured   and  marketed  by  established
pharmaceutical  companies that have substantially larger research facilities and
technical staffs and greater financial and marketing resources than BioTime. For
example,  DuPont Pharmaceuticals  presently markets Hespan, an artificial plasma
volume expander, and Viaspan, a solution for use in the preservation of kidneys,
livers and pancreases for surgical transplant.
Abbott and Baxter  International  manufacture  and sell a generic  equivalent of
Hespan.

         To compete  with new and  existing  plasma  expanders,  the  Company is
developing  products  that contain  constituents  that may prevent or reduce the
physiological imbalances, bleeding, fluid overload, edema, poor oxygenation, and
organ failure that can occur when  competing  products are used. To compete with
existing  organ  preservation  solutions,  the  Company  is seeking to develop a
solution  that can be used to preserve  all organs  simultaneously  and for long
periods of time.


                                       17
<PAGE>



         A number of other  companies are known to be developing  hemoglobin and
synthetic red blood cell substitutes and technologies.  BioTime's  products have
been  developed  for use  before  red  blood  cells  are  needed.  In  contrast,
hemoglobin and other red blood cell  substitute  products are designed to remedy
ischemia and similar conditions that may result from the loss of oxygen carrying
red blood cells. Those products would not necessarily compete with the Company's
products unless the oxygenating  molecules were included in solutions that could
replace  fluid  volume and  prevent or reduce the  physiological  imbalances  as
effectively as the Company's products. Generally, red blood cell substitutes are
more expensive to produce and potentially more toxic than Hextend and PentaLyte.

         As a result of the introduction of generic plasma expanders intended to
compete with Hespan,  competition in the plasma  expander market has intensified
and  wholesale  prices  have  declined.  Competition  in the  areas of  business
targeted  by the  Company is likely to  intensify  further as new  products  and
technologies  reach the market.  Superior  new  products  are likely to sell for
higher prices and generate  higher profit margins once acceptance by the medical
community is achieved.  Those  companies that are successful in introducing  new
products  and  technologies  to the market first may gain  significant  economic
advantages over their  competitors in the  establishment  of a customer base and
track  record for the  performance  of their  products  and  technologies.  Such
companies  will also  benefit  from  revenues  from sales which could be used to
strengthen their research and development,  production, and marketing resources.
All  companies  engaged  in the  medical  products  industry  face  the  risk of
obsolescence  of  their  products  and  technologies  as more  advanced  or cost
effective products and technologies are developed by their  competitors.  As the
industry  matures,  companies will compete based upon the  performance  and cost
effectiveness of their products.


Employees

         As of December  31,  1998,  the Company  employed  eleven  persons on a
full-time  basis  and  three  persons  on a  part-time  basis.  Three  full-time
employees  and one part-time  employee  hold Ph.D. or Masters  Degrees in one or
more fields of science.


                                       18
<PAGE>



Risk Factors

     Some of the factors that could materially  affect the Company's  operations
are and prospects are discussed  below.  There may be other factors that are not
mentioned here or of which BioTime is not presently aware that could also affect
BioTime's operations.

BioTime Products Cannot Be Marketed Without FDA and Other Regulatory Approvals

      The  products  that  BioTime  develops  cannot  be sold  until the FDA and
corresponding  foreign regulatory  authorities  approve the products for medical
use.  The  regulatory  process,   which  includes   preclinical,   clinical  and
post-clinical testing of each product to establish its safety and efficacy,  can
take several years to complete and require the  expenditure of substantial  time
and  funds.   Data  obtained  from  preclinical  and  clinical   activities  are
susceptible  to varying  interpretations  which  could  delay,  limit or prevent
regulatory approval.  In addition,  delays or rejections may be encountered as a
result of changes in FDA policy during the period of product development and FDA
regulatory review.  Similar delays may also be encountered in foreign countries.
There can be no assurance that, even after substantial  expenditures of time and
money,  regulatory  approval will be obtained for any products  developed by the
Company.  Moreover,  even if regulatory  approval of a product is granted,  such
approval may entail  limitations on the indicated uses for which the product may
be marketed.  After regulatory approval is obtained,  the approved product,  the
manufacturer  and the  manufacturing  facilities are subject to continual review
and periodic  inspections,  and a later discovery of previously unknown problems
with a product,  manufacturer  or facility  may result in  restrictions  on such
product or  manufacturer,  including  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  and  criminal   prosecution.   Additional   government
regulation may be established  which could prevent or delay regulatory  approval
of the Company's products.

Uncertainty of Future Sales; Competition

      The Company's  ability to generate  substantial  operating revenue depends
upon its success in  developing  and  marketing  its  products.  There can be no
assurance that any products that receive FDA or foreign regulatory approval will
be successfully  marketed or that the Company will receive  sufficient  revenues
from  product  sales to meet  its  operating  expenses.  The  acceptance  of the
Company's  products and technologies by the medical  profession may take time to
develop  because  physicians and hospitals may be reluctant to try a new product
due  to  the  high  degree  of  risk  associated  with  the  application  of new
technologies and products in the field of human medicine.

     The Company's plasma expander products will compete with products currently
used to treat or  prevent  hypovolemia,  including  albumin  and  other  colloid
solutions,  and crystalloid  solutions.  Some of these  products,  in particular
crystalloid solutions,  are commonly used in surgery and trauma care and sell at
low prices.  In order to compete with other  products,  particularly  those that
sell at lower  prices,  the  Company's  products  will have to be  recognized as
providing  medically  significant  advantages.  The competing products are being
manufactured  and marketed by  established  pharmaceutical  companies  with more
resources  than the  Company.


                                       19
<PAGE>



For example,  DuPont  Pharmaceuticals  presently  markets Hespan,  an artificial
plasma volume expander,  and Viaspan,  a solution for use in the preservation of
kidneys,  livers  and  pancreases  for  surgical  transplant.  Abbott and Baxter
International  manufacture and sell a generic  equivalent of Hespan. As a result
of the introduction of generic plasma expanders intended to compete with Hespan,
competition in the plasma expander  market has intensified and wholesale  prices
have declined.  There also is a risk that the Company's  competitors may succeed
in developing  safer or more effective  products that could render the Company's
products and technologies obsolete or noncompetitive.

Development Stage Company

      BioTime is in the development  stage,  and, to date, has been  principally
engaged in research and development  activities.  None of the Company's products
are on the market yet, and the Company has not generated a significant amount of
operating revenue. As a result of the developmental nature of its business,  the
Company can be expected to sustain additional  operating losses. There can be no
assurance  that the Company will generate  sufficient  revenues from the sale or
licensing of its products and technologies to be profitable.

Uncertainty as to the Successful Development of Medical Products

     The Company's business involves the attempt to develop new medical products
and technologies.  Such experimentation is inherently costly, time consuming and
uncertain as to its results.  If the Company is  successful  in developing a new
technology  or  product,  refinement  of  the  new  technology  or  product  and
definition of the practical  applications  and  limitations of the technology or
product may take years and require the expenditure of large sums of money.  From
the date of the Company's inception through December 31, 1998, the Company spent
$11,681,988 on research and development,  and the Company expects to continue to
incur substantial research and development expenses.

      Although the Company believes that its Phase III clinical trials show that
Hextend is safe for use in clinical medicine, there is no assurance that the FDA
will reach the same conclusion.  The Company's other  experimental  products and
technologies  have not been applied in human medicine and have only been used in
laboratory  studies on animals and there can be no assurance that those products
will prove to be safe and  efficacious  in the human  medical  applications  for
which they were developed.


                                       20
<PAGE>



BioTime May Need to Raise Additional Capital

     Although the Company recently raised $7,329,000  through the sale of common
shares in a subscription  rights offer, the Company may need to raise capital in
the  future  to meet its  operating  expenses  until  such time as it is able to
generate  sufficient  revenues from product  sales or  royalties.  The Company's
operating expenses will increase if it succeeds in bringing  additional products
out of the  laboratory  testing phase of development  and into clinical  trials.
Additional  financing may be required for the  continuation  or expansion of the
Company's research and product  development,  additional  clinical trials of new
products, and production and marketing of Hextend and any other Company products
that may be approved by FDA or foreign regulatory  authorities.  There can be no
assurance that the Company will be able to raise  additional  funds on favorable
terms or at all, or that such funds, if raised, will be sufficient to permit the
Company to develop and market its products.  Unless the Company is able to raise
additional  funds when  needed,  it is likely that it will be unable to continue
its  planned  activities,  notwithstanding  the  progress  of its  research  and
development projects.

Absence of Manufacturing and Marketing Capabilities; Reliance Upon Licensing

      The Company  presently  does not have adequate  facilities or resources to
manufacture  its products or the  hydroxyethyl  starches  used in its  products.
BioTime  has  granted  Abbott an  exclusive  license to  manufacture  and market
Hextend  in the  United  States  and  Canada,  and  BioTime  plans to enter into
additional  arrangements  with  pharmaceutical  companies for the production and
marketing of the  Company's  products in other  countries.  Although a number of
pharmaceutical  companies have expressed their interest in obtaining licenses to
manufacture  and market  Company  products in other  countries,  there can be no
assurance   that  the  Company  will  be  successful   making  other   licensing
arrangements.  If additional  licensing or manufacturing  arrangements cannot be
made on acceptable  terms,  the Company may have to construct or acquire its own
manufacturing facilities and to establish its own marketing organization,  which
would entail significant expenditures of time and money.

Patents May Not Protect BioTime Products from Competition

      The Company has obtained  patents in the United  States and certain  other
countries,  and has additional patent applications pending, for certain products
including  Hextend and PentaLyte.  No assurance can be given that any additional
patents  will be issued  to the  Company,  or that the  Company's  patents  will
provide  meaningful  protection  against the development of competing  products.
There also is no assurance that competitors will not successfully  challenge the
validity  or  enforceability  of any  patent  issued to the  Company.  The costs
required to uphold the validity and prevent infringement of any patent issued to
the Company could be  substantial,  and the Company might not have the resources
available to defend its patent rights.


                                       21
<PAGE>



Prices and Sales of Products  May be Limited by Health  Insurance  Coverage  and
Government Regulation

      Success in selling BioTime's  products may depend in part on the extent to
which health insurance  companies,  HMOs, and government  health  administration
authorities  such as Medicare and Medicaid will pay for the cost of the products
and related treatment. There can be no assurance that adequate health insurance,
HMO, and government  coverage will be available to permit BioTime products to be
sold at prices  high  enough to generate a profit.  In some  foreign  countries,
pricing or  profitability  of health  care  products  is  subject to  government
control.  In the United  States,  there have been a number of federal  and state
proposals to implement similar government controls, and new proposals are likely
to be made in the future.

Dependence Upon Key Personnel

      The Company depends to a considerable  degree on the continued services of
its executive officers. Although the Company maintains key man life insurance in
the  amount  of  $1,000,000  on the  life of Dr.  Paul  Segall,  the loss of the
services of any of the executive  officers could have a material  adverse effect
on the Company. In addition, the success of the Company will depend, among other
factors, upon successful  recruitment and retention of additional highly skilled
and experienced management and technical personnel.

Year 2000 Problems Could Impair Sales of BioTime Products

     Because BioTime does not have its own pharmaceutical production facilities,
it will rely upon  Abbott  and  others to  manufacture  and  distribute  BioTime
products. If year 2000 problems were to impede the ability of those companies to
manufacture and distribute  BioTime products or to provide raw materials used in
the  manufacture of those products,  BioTime's  product sales could be adversely
affected.  BioTime does not have a contingency plan to address those problems if
they  were to  arise,  and it may not be able to  replace  Abbott  or any  other
company  that  may  obtain a  license  to  manufacture  and  distribute  BioTime
products.  Abbott has  announced the  implementation  of a program to assess and
remedy any year 2000 problems that may affect its operations,  and has asked its
key suppliers to certify that their systems are year 2000 compliant. The results
of the year 2000 compliance programs implemented by Abbott and its suppliers are
not presently known.

BioTime Does Not Pay Cash Dividends

      BioTime  does  not  pay  cash  dividends  on its  Common  Shares.  For the
foreseeable  future  it is  anticipated  that any  earnings  generated  from the
Company's  business  will be used to finance  the growth of the Company and will
not be paid out as dividends to BioTime shareholders.


                                       22
<PAGE>



The Price of BioTime Stock May Rise and Fall Rapidly

      BioTime Common Shares are traded on Nasdaq. The market price of the Common
Shares, like that of the common stock of many biotechnology  companies, has been
highly  volatile.  The price of BioTime  shares may rise  rapidly in response to
certain events,  such as the  commencement of clinical trials of an experimental
new drug, even though the outcome of those trials and the likelihood of ultimate
FDA approval  remains  uncertain.  Similarly,  prices of BioTime shares may fall
rapidly in response to certain  events such as  unfavorable  results of clinical
trials or a delay or  failure  to obtain  FDA  approval.  In the event  that the
Company  achieves  earnings from the sale of products,  securities  analysts may
begin predicting  quarterly  earnings.  The failure of the Company's earnings to
meet analysts'  expectations  could result in a significant rapid decline in the
market  price of the  Company's  shares.  In  addition,  the  stock  market  has
experienced  and continues to experience  extreme price and volume  fluctuations
which  have  affected  the  market  price  of  the  equity  securities  of  many
biotechnology  companies  and which have often been  unrelated to the  operating
performance  of these  companies.  Such broad  market  fluctuations,  as well as
general economic and political conditions, may adversely affect the market price
of BioTime Common Shares.

Requirements for Continued Listing on Nasdaq

      BioTime Common Shares are traded on the Nasdaq National Market,  which has
adopted  rules that  establish  criteria  for initial and  continued  listing of
securities. Under the rules for continued listing on the Nasdaq National Market,
a company must maintain at least $4,000,000 of net tangible assets,  or a market
capitalization of at least $50,000,000,  or total assets and total revenue of at
least  $50,000,000  for the most  recently  completed  fiscal year or two of the
three most  recently  completed  fiscal  years.  Although  BioTime had more than
$4,000,000  of net  tangible  assets  and a market  capitalization  in excess of
$50,000,000 on the date of this report, there is no assurance that future losses
from  operations  will not cause the  Company's  net  tangible  assets or market
capitalization  to decline below the Nasdaq listing  criteria in the future.  If
the Common Shares are delisted from the Nasdaq National  Market,  trading in the
Common  Shares  could  be  conducted  on the  Nasdaq  SmallCap  Market  or on an
electronic bulletin board established for securities that do not meet the Nasdaq
listing  requirements.  If the  Common  Shares  were  delisted  from the  Nasdaq
National Market and were not listed on the Nasdaq SmallCap Market, they would be
subject  to the  so-called  penny  stock  rule that  imposes  restrictive  sales
practice requirements on broker-dealers who sell such securities.  Consequently,
delisting,  if it  occurred,  could affect the ability of  shareholders  to sell
their Common Shares in the secondary market.


Item 2. Facilities.

     The  Company  occupies  its office and  laboratory  facility  in  Berkeley,
California  under a lease  that  will  expire  on March 31,  2004.  The  Company
presently occupies approximately 5,200 square feet of space. The amount of space
leased by the Company will increase by  approximately  3,000 square feet and the
monthly  rent will  increase to $10,000 per month when the  additional  space is
made available to the Company,  which is expected to occur on or around June 30,
1999.  The rent will increase  annually by the greater of 3% and the increase in
the local consumer price index,  subject to a maximum annual increase of 7%. The
Company also pays all charges for utilities and garbage collection.


                                       23
<PAGE>



     The  Company  has an option to extend the term of the lease for a period of
three  years,  and to  terminate  the lease early upon six months  notice  after
September 30, 2000.

     The Company uses, on a fee per use basis,  facilities for surgical research
on animals at an unaffiliated  privately run research center located in Winters,
California.  Contracting  for the use of  research  facilities  has  enabled the
Company to initiate its research projects without the substantial  capital cost,
overhead costs and delay  associated  with the  acquisition and maintenance of a
modern animal surgical research facility.

Item 3.   Legal Proceedings.

     The  Company  is not  presently  involved  in any  material  litigation  or
proceedings,  and to the Company's  knowledge no such  litigation or proceedings
are contemplated.

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

     Not Applicable.


                                       24
<PAGE>



Item 5.   Market for Registrant's Common Equity and Related Stockholder Matters.


     The Company's  Common Shares are traded in the  over-the-counter  market on
the Nasdaq  under the symbol  BTIM.  The Common  Shares have been trading on the
Nasdaq  National  Market since April 28, 1998, and traded on the Nasdaq SmallCap
Market from March 5, 1992  through  April 27,  1998.  The  closing  price of the
Company's Common Shares on Nasdaq on March 19, 1999 was $13.75.

     The following table sets forth the range of high and low bid prices for the
Common  Shares for the fiscal  years ended June 30, 1997 and 1998 and the fiscal
year ended December 31, 1998 (six months), based on transaction data as reported
by Nasdaq. All prices have been adjusted to give effect to the Company's payment
of a stock dividend during October 1997 to effect a three-for-one stock split.

Quarter Ended                        High                           Low
- -------------                        ----                           ---
September 30, 1996                  $7.67                          $4.67
December 31, 1996                    9.33                           4.83
March 31, 1997                      13.20                           8.08
June 30, 1997                       12.33                           7.58
September 30, 1997                  17.08                           8.67
December 31, 1997                   27.00                          18.50
March 31, 1998                      19.75                          11.00
June 30, 1998                       14.37                           5.81
September 30, 1998                  9.88                            5.50
December 31, 1998                   18.13                           7.00

     As of March 19,1999,  there were 319  shareholders  of record of the Common
Shares based upon information from the Registrar and Transfer Agent.

     The Company has paid no dividends on its Common  Shares since its inception
and does not plan to pay  dividends  on its  Common  Shares  in the  foreseeable
future.


                                       25
<PAGE>



Item 6. Selected Financial Data.

The selected  financial data as of December 31, 1998, June 30, 1998, 1997, 1996,
1995 and 1994 and the period from inception  (November 30, 1990) to December 31,
1998  presented  below have been derived from the  financial  statements  of the
Company which have been audited by Deloitte & Touche LLP, independent  auditors,
as stated  in their  report  appearing  elsewhere  herein  (which  expresses  an
unqualified  opinion  and  includes  an  explanatory  paragraph  related  to the
development  stage of the Company's  operations).  The selected  financial  data
should be read in conjunction with the Company's financial  statements and notes
thereto and  "Management's  Discussion  and Analysis of Financial  Condition and
Results of Operations" included elsewhere.

<TABLE>

Statement of Operations Data:


<CAPTION>
                                                                                                              Period from Inception
                                                                        June 30,                                    (November 30,
                            December 31,  -----------------------------------------------------------------------      1990) to
                                1998          1998           1997          1996          1995           1994      December 31, 1998
                           -------------  ------------   ------------  ------------  ------------  -------------- -----------------
<S>                        <C>            <C>            <C>           <C>           <C>           <C>             <C>
REVENUE:                                                       
Licensing Fee              $    250,000   $ 1,150,000    $    62,500   $     --      $    --       $     --        $   1,462,500
                           -------------  ------------   ------------  ------------  ------------  --------------  --------------
EXPENSES: 
Research and development     (1,723,860)  $(3,048,775)   $(2,136,325)  $(1,142,168)  $(1,791,698)  $    (777,668)    (11,681,988)
General and administrative     (710,131)   (1,849,312)    (1,209,546)     (954,049)     (808,432)       (931,439)     (7,789,764)
                           -------------  ------------   ------------  ------------  ------------  --------------  --------------
Total expenses               (2,433,991)   (4,898,087)    (3,345,871)   (2,096,217)   (2,600,130)     (1,709,107)    (19,471,752)
                           -------------  ------------   ------------  ------------  ------------  --------------  --------------
INTEREST AND OTHER INCOME:       89,513       294,741        189,161       130,882       222,383         162,154       1,302,747
                           -------------  ------------   ------------  ------------  ------------  --------------  --------------

Net loss                   $ (2,094,478)  $(3,453,346)   $(3,094,210)  $(1,965,335)  $(2,337,747)  $  (1,546,953)   $(16,706,505)
                           =============  ============   ============  ============  ============  ==============  ==============
Basic and Diluted Net loss
per share                  $      (0.21)  $     (0.35)   $     (0.35)  $     (0.25)  $     (0.30)  $       (0.25) 
                           =============  ============   ============  ============  ============  ==============
Common and equivalent shares                                           
used in computing per share                          
amounts                      10,008,468     9,833,156      8,877,024     7,827,732     7,900,392       6,139,335
                           =============  ============   ============  ============  ============  ==============
</TABLE>


<TABLE>
Balance Sheet Data:
<CAPTION>
                                                                                June 30,
                                                                -----------------------------------------
                                        December 31, 1998             1998                   1997
                                      -----------------------   ------------------     ------------------
<S>     <C>    <C>    <C>    <C>    <C>    <C>
Cash, cash equivalents and
short term investments                      $2,429,014              $4,105,781             $7,811,634
Working Capital                              2,157,578               3,724,663              6,846,575
Total assets                                 2,809,455               4,641,780              8,297,774
Shareholders' equity                         2,384,752               4,014,750              6,536,106

</TABLE>


                                       26
<PAGE>


Item 7. Management's Discussion and Analysis of Financial Condition and Results
        of Operations.

Overview

         Since its  inception  in November  1990,  the Company has been  engaged
primarily  in  research  and  development  activities.  The  Company has not yet
generated  significant  operating  revenues,  and as of  December  31,  1998 the
Company had incurred a cumulative net loss of $16,706,505. The Company's ability
to generate substantial operating revenue depends upon its success in developing
and marketing or licensing its plasma  volume  expanders and organ  preservation
solutions and technology for medical use.

         Most of the  Company's  research  and  development  efforts  have  been
devoted to the development of the Company's first three blood volume replacement
products:  Hextend,  PentaLyte,  and HetaCool. By testing and bringing all three
products to the market,  BioTime can increase its market share by providing  the
medical community with solutions to match patients' needs.

         The Company  has  submitted  a New Drug  Application  (NDA) to the FDA,
seeking  approval to market  Hextend in the United States.  After  reviewing the
NDA, the FDA sent the Company an action letter seeking  clarification of certain
matters.  The Company has  responded to the FDA's action  letter and is awaiting
approval of the NDA. The NDA includes data from the Company's Phase III clinical
trials,  in which the  primary  endpoints  were  successfully  met.  The Company
believes that the low incidence of adverse  events  related to blood clotting in
the  Hextend  patients  demonstrates  that  Hextend  may be safely used in large
amounts.  However,  the FDA will make its own  evaluation of the clinical  trial
data and there is no assurance that the FDA will approve the Company's NDA.

         BioTime has granted to Abbott an exclusive  license to manufacture  and
sell Hextend in the United States and Canada for all therapeutic uses other than
those involving  hypothermic surgery, or the replacement of substantially all of
a  patient's  circulating  blood  volume.  BioTime  has  retained  all rights to
manufacture, sell or license Hextend and other products in all other countries.
Abbott also has a right to obtain licenses to manufacture and sell other BioTime
products.

         Under the  License  Agreement,  Abbott has agreed to pay  BioTime up to
$40,000,000  in license fees based upon  product  sales and the  achievement  of
certain  milestones.  So far,  Company has  received  $1,650,000  of license fee
milestone  payments.  In addition to the license fees, Abbott will pay BioTime a
royalty on total  annual net sales of Hextend.  The royalty rate will be 5% plus
an  additional  .22% for each  $1,000,000  of annual net sales,  up to a maximum
royalty  rate of 36%.  The royalty rate for each year will be applied on a total
net sales basis so that once the highest  royalty rate for a year is determined,
that rate  will be paid  with  respect  to all  sales  for that  year.  Abbott's
obligation to pay royalties on sales of Hextend will expire in the United States
or Canada when all patents  protecting  Hextend in the applicable country expire
and any third party  obtains  certain  regulatory  approvals to market a generic
equivalent  product  in that  country.  Abbott  has also  agreed to  manufacture
Hextend  for sale by  BioTime in the event that  Abbott's  exclusive  license is
terminated prior to expiration.


                                       27
<PAGE>



         The  Company  intends  to  enter  global  markets   through   licensing
agreements  with overseas  pharmaceutical  companies.  By licensing its products
abroad,  the  Company  will  avoid the  capital  costs and  delays  inherent  in
acquiring or establishing its own  pharmaceutical  manufacturing  facilities and
establishing an international marketing organization. A number of pharmaceutical
companies  in Europe,  Asia and other  markets  around the world have  expressed
their  interest in obtaining  licenses to  manufacture  and market the Company's
products.  The Company is continuing to meet with  representatives of interested
companies to discuss potential agreements.

         The Company is also pursuing a global clinical trial strategy, the goal
of which is to permit the Company to obtain regulatory approval for its products
as quickly and economically as practicable. For example, the United States Phase
III clinical trials of Hextend  involved 120 patients and were completed in less
than 12 months.  Although regulatory  requirements vary from country to country,
the Company may be able to file applications for foreign regulatory  approval of
its products based upon the results of the United States clinical trials.  Based
upon  discussions  with the Canadian Bureau of  Pharmaceutical  Assessment,  the
Company  plans to file for  Canadian  market  approval  based the results of its
United States  clinical  trials.  Regulatory  approvals  for countries  that are
members  of the  European  Union may be  obtained  through a mutual  recognition
procedure.  The Company has determined  that several member nations would accept
an application  based upon the United States clinical trials. If approvals based
upon those  trials can be obtained in the  requisite  number of member  nations,
then the Company would be permitted to market Hextend in all 16 member nations.

         In order to commence  clinical  trials for  regulatory  approval of new
products, such as PentaLyte and HetaCool, or new therapeutic uses of Hextend, it
will  be  necessary  for  the  Company  to  prepare  and  file  with  the FDA an
Investigational  New Drug  Application  ("IND")  or an  amendment  to expand the
present IND for  additional  Hextend  studies.  Filings with foreign  regulatory
agencies will be required to commence  clinical  trials  over-seas.  The cost of
preparing those  regulatory  filings and conducting those clinical trials is not
presently determinable,  but could be substantial.  It will be necessary for the
Company to obtain additional funds in order to complete any clinical trials that
may begin for its new products or for new uses of Hextend.  The Company plans to
negotiate  product  licensing and  marketing  agreements  that require  overseas
licensees and distributors of Company  products to bear regulatory  approval and
clinical trial costs for their territories.

         In addition to developing clinical trial programs, the Company plans to
continue to provide  funding  for its  laboratory  testing  programs at selected
universities,  medical  schools  and  hospitals  for the  purpose of  developing
additional uses of Hextend, PentaLyte, HetaCool, and other new products, but the
amount of research that will be conducted at those institutions will depend upon
the Company's  financial status.  Because the Company's research and development
expenses, clinical trial expenses, and production and marketing expenses will be
charged against earnings for financial  reporting  purposes,  management expects
that losses from  operations  will  continue to be incurred for the  foreseeable
future.


                                       28
<PAGE>



Year 2000 Considerations

         The Company has reviewed its internal computer and software systems and
has  determined  that it is highly  unlikely  that any of those  systems will be
adversely affected by problems associated with the year 2000.  Accordingly,  the
Company does not expect to incur any  material  expense in bringing its computer
systems into year 2000 compliance.  The so-called "year 2000 problems" may arise
if  computer  programs  do not  properly  recognize  years that begins with "20"
instead of "19." If not corrected,  computer  applications  that are affected by
the year 2000 problem could fail or create erroneous results.

         The Company  relies upon data analysis  provided by  independent  third
parties that conduct tests on Company products and compile and analyze data from
Company  laboratory studies and clinical trials. The Company is asking its third
party contractors to inform the Company's  management whether their systems will
be  adversely  affected  by the year 2000  problem  and what  plans they have to
remedy any such problems in a timely manner.

         Because the  Company  does not have its own  pharmaceutical  production
facilities,  it will rely upon Abbott and others to  manufacture  and distribute
Company  products.  If year 2000  problems  were to impede the  ability of those
companies to manufacture and distribute  Company  products or raw materials used
in the manufacture of Company  products,  future sales of Company products could
be adversely affected. BioTime does not have a contingency plan to address those
problems if they were to arise,  and it may not be able to replace Abbott or any
other company that may obtain a license to manufacture  and  distribute  BioTime
products.  Abbott has  announced the  implementation  of a program to assess and
remedy any year 2000 problems that may affect its operations,  and has asked its
key suppliers to certify that their systems are year 2000 compliant. The results
of the year 2000 compliance programs implemented by Abbott and its suppliers are
not presently known.

Change of Fiscal Year

         In  November  1998,  the Board of  Directors  approved  a change to the
Company's  operating  fiscal  year from a fiscal year ending June 30 to a fiscal
year  ending  December  31,  beginning  January 1, 1999.  See Note 1 of Notes to
Financial Statements. In connection with this change, the Company is filing this
transition  report on Form  10-K with the  Securities  and  Exchange  Commission
covering  the  transition  period  from  July 1,  1998  to  December  31,  1998.
Accordingly,  the accompanying financial statements are for the six months ended
December 31, 1998,  the twelve months ended June 30, 1998 ("Fiscal  1998"),  the
twelve  months ended June 30, 1997  ("Fiscal  1997") and the twelve months ended
June 30, 1996 ("Fiscal 1996").


                                       29
<PAGE>


Results of Operations

Six Month Period Ended  December 31, 1998,  and Years Ended June 30, 1998,  June
30, 1997, and June 30, 1996

         During Fiscal 1997,  the Company  received  $1,400,000  for signing the
License  Agreement  and  achieving a license  fee  milestone  pertaining  to the
allowance of certain  patent  claims  pending.  During Fiscal 1998,  the Company
received an additional milestone fee of $250,000 for filing its NDA for Hextend.
The  Company  deferred  recognition  of a portion  of the  license  fee  payment
received for signing of the License Agreement. The Company recognized $62,500 of
license fee revenue  during  Fiscal 1997,  $1,150,000  during  Fiscal 1998,  and
$250,000  during the six month period ended  December  31, 1998.  The  remaining
$187,500 of license fee revenue will be recognized by June 30, 1999. (See Note 3
to the  accompanying  financial  statements).  For the six  month  period  ended
December 31, 1998, the interest and other income was $89,513. Interest and other
income  increased to $294,741 for Fiscal 1998 from  $189,161 for Fiscal 1997 and
from  $130,822  for Fiscal  1996.  The  increase in interest and other income is
attributable  to the increase in cash and cash  equivalents  from the  Company's
sale of Common Shares through a subscription  rights offering that was completed
during February 1997.

         For  the six  month  period  ended  December  31,  1998,  research  and
development  expenses were $1,723,860,  which include laboratory study expenses,
salaries,  expenses for the preparation of additional  clinical trials in Europe
and the preparation of European regulatory applications,  and consultants' fees.
It is expected  that  research and  development  expenses  will  increase as the
Company continues  clinical testing of Hextend and commences clinical studies of
other products.  Research and development  expenses  increased to $3,048,775 for
Fiscal  1998,  from  $2,136,325  for Fiscal  1997.  The increase in research and
development  expenses is attributable to the cost of preparing and filing an NDA
for Hextend,  and preparing for future regulatory  filings in Europe and Canada.
Research and development  expenses increased to $2,136,325 for Fiscal 1997, from
$1,142,168  for Fiscal 1996. The increase in research and  development  expenses
was  attributable  to the Company's  Phase III human clinical trials of Hextend,
initiation of a clinical trial at Middlesex Hospital in London,  England, and an
accrual for bonuses granted after June 30, 1997.

         For the six month  period  ended  December  31,  1998,  the general and
administrative  expenses  were  $710,131,   which  are  comprised  of  salaries,
consultants'  fees, and general operating  expenses of the Company.  General and
administrative expenses increased to $1,849,312 for Fiscal 1998, from $1,209,546
for Fiscal 1997.  This  increase is  attributable  to an increase in the general
operations of the Company, an increase in personnel,  and bonus awards.  General
and  administrative  expenses  increased to  $1,209,546  for Fiscal  1997,  from
$954,049 for Fiscal 1996.  This  increase was  attributable  to an  amortization
expense  associated  with  agreements  the  Company  entered  into with  certain
financial  advisors  and  consultants  in exchange  for warrants to purchase the
Company's  stock,  an increase  in the general  operations  of the  Company,  an
increase in personnel, and bonus awards. 


                                       30
<PAGE>



Taxes

         At December 31, 1998,  the Company had a cumulative  net operating loss
carryforward of approximately $19,600,000 for federal income tax purposes.

Liquidity and Capital Resources

         Since  inception,  the Company has  primarily  financed its  operations
through the sale of equity  securities  and licensing  fees, and at December 31,
1998 the Company had cash and cash equivalents of $2,400,000.  On March 9, 1999,
the Company  completed the sale of 751,654  common shares through a subscription
rights offer and raised an additional  $7,328,626,  before deducting expenses of
the offer.  The  Company  expects  that its cash on hand will be  sufficient  to
finance its operations beyond the next 12 months. However,  additional funds may
be required for the successful  completion of the Company's product  development
activities.  The Company  plans to obtain  financing  for its future  operations
through royalties and licensing fees from Abbott, from licensing fees from other
pharmaceutical companies,  and/or additional sales of equity or debt securities.
Sales of  additional  equity  securities  could  result in the  dilution  of the
interests of present shareholders.

         Under its License  Agreement  with  Abbott,  the  Company has  received
$1,650,000 of license fees and milestone  payments for signing the agreement and
achieving  milestones  pertaining  to the  allowance  of certain  patent  claims
pending and the submission of the NDA for Hextend.  Up to an additional $850,000
of  license  payments  under  the  License  Agreement  will  become  payable  in
installments  upon the  achievement  of specific  milestones  pertaining  to the
approval of the NDA for Hextend and the  commencement  of sales of the  product.
Additional  license fees and  royalties  will become  payable based upon product
sales.

          License  fees and  royalties  will also be sought from Abbott or other
pharmaceutical companies for United States and Canadian licenses of new products
and uses of Hextend that are not covered by Abbott's  license,  and for licenses
to manufacture and market the Company's products abroad.

         The amount of license fees and royalties that may be earned through the
licensing and sale of the Company's products, as well as the future availability
and terms of equity and debt financings,  are uncertain.  The  unavailability or
inadequacy of financing or revenues to meet future capital needs could force the
Company to modify,  curtail, delay or suspend some or all aspects of its planned
operations.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk.

         The Company did not hold any market risk  sensitive  instruments  as of
December 31, 1998, June 30, 1998 or June 30, 1997.


                                       31
<PAGE>


Item 8.   Financial Statements and Supplementary Data

                          INDEX TO FINANCIAL STATEMENTS


                                                                       Pages
                                                                       -----

Independent Auditors' Report                                             33

Balance Sheets As of December 31, 1998                                   34
and June 30, 1998

Statements of Operations For the Six Months Ended
December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                 35

Statements of Shareholders' Equity For the Six Months
Ended December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                36-37

Statements of Cash Flows For the Six Months Ended
December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                38-39

Notes to Financial Statements                                           40-49


                                       32
<PAGE>



INDEPENDENT AUDITORS' REPORT


To the Board of Directors and Shareholders
BioTime, Inc.:

We have audited the accompanying balance sheets of BioTime,  Inc. (a development
stage  company)  as of  December  31,  1998 and June 30,  1998,  and the related
statements  of  operations,  shareholders'  equity and cash flows for six months
ended  December 31,  1998,  each of the three years in the period ended June 30,
1998,  and the period from November 30, 1990  (inception)  to December 31, 1998.
These financial  statements are the responsibility of the Company's  management.
Our responsibility is to express an opinion on these financial  statements based
on our audits.

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

In our  opinion,  such  financial  statements  present  fairly,  in all material
respects,  the financial  position of BioTime,  Inc. as of December 31, 1998 and
June 30, 1998,  and the results of its operations and its cash flows for the six
months ended December 31, 1998, each of the three years in the period ended June
30, 1998 and the period from November 30, 1990 (inception) to December 31, 1998,
in conformity with generally accepted accounting principles.

The Company is in the development stage as of December 31, 1998. As discussed in
Note 1 to the  financial  statements,  successful  completion  of the  Company's
product   development  program  and  ultimately  the  attainment  of  profitable
operations  is dependent  upon future  events,  including  maintaining  adequate
financing to fulfill its development  activities,  obtaining regulatory approval
for products ultimately developed, and achieving a level of revenues adequate to
support the Company's cost structure.


DELOITTE & TOUCHE LLP
San Francisco, California
February 5, 1999

(March 9, 1999, as to Note 9)


                                       33
<PAGE>

<TABLE>

                                  BIOTIME, INC.
                          (A Development Stage Company)

<CAPTION>
                                 BALANCE SHEETS


           ASSETS                                                                    December 31,       June 30,
                                                                                         1998             1998
                                                                                    ---------------  ---------------
<S>                                                                                    <C>              <C>
CURRENT ASSETS
Cash and cash equivalents                                                              $ 2,429,014      $ 4,105,781
Prepaid expenses and other current assets                                                  153,267          245,912
                                                                                    ---------------  ---------------
Total current assets                                                                     2,582,281        4,351,693

EQUIPMENT, Net of accumulated depreciation of $217,107and $188,526                         166,474          190,665
DEPOSITS AND OTHER ASSETS                                                                   60,700           99,422
                                                                                    ---------------  ---------------
TOTAL ASSETS                                                                           $ 2,809,455      $ 4,641,780
                                                                                    ===============  ===============

        LIABILITIES AND SHAREHOLDERS' EQUITY

CURRENT LIABILITIES
Accounts payable                                                                        $  237,203       $  189,530
Deferred revenue - current portion                                                         187,500          437,500
                                                                                    ---------------  ---------------
Total current liabilities                                                                  424,703          627,030

COMMITMENTS (Note 6)

SHAREHOLDERS' EQUITY:
Preferred Shares, no par value,  undesignated as to Series, authorized 1,000,000
 shares; none outstanding (Note 4)
Common Shares, no par value, authorized 40,000,000 shares; issued 
 and outstanding 10,033,079 and 9,947,579 shares (Note 4)                               19,022,116       18,557,636
Contributed Capital                                                                         93,972           93,972
Deficit accumulated during development stage                                          (16,731,336)      (14,636,858)
                                                                                    ---------------  ---------------
Total shareholders' equity                                                               2,384,752        4,014,750
                                                                                    ---------------  ---------------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY                                             $ 2,809,455      $ 4,641,780
                                                                                    ===============  ===============
<FN>
See notes to financial statements.
</FN>
</TABLE>


                                       34
<PAGE>

<TABLE>
                                                             BIOTIME, INC.
                                                     (A Development Stage Company)
<CAPTION>
                                                       STATEMENTS OF OPERATIONS




                                                Six Months
                                                   Ended                    Year Ended June 30,               Period from Inception
                                                December 31,  --------------------------------------------    (November 30,1990) to
                                                    1998          1998           1997            1996          December 31, 1998
                                                ------------- -------------  -------------   -------------     ------------------
<S>                                              <C>          <C>             <C>             <C>                <C>
REVENUE:
License fee                                     $   250,000   $ 1,150,000     $   62,500      $    --            $ 1,462,500
                                                ------------- -------------  -------------   -------------     ---------------

EXPENSES:
Research and development                         (1,723,860)   (3,048,775)    (2,136,325)     (1,142,168)        (11,681,988)
General and administrative                         (710,131)   (1,849,312)    (1,209,546)       (954,049)         (7,789,764)
                                                ------------- -------------  -------------   -------------     ---------------
Total expenses                                   (2,433,991)   (4,898,087)    (3,345,871)     (2,096,217)        (19,471,752)
                                                ------------- -------------  -------------   -------------     ---------------

INTEREST AND OTHER INCOME:                           89,513       294,741        189,161         130,882           1,302,747
                                                ------------- -------------  -------------   -------------     ---------------

NET LOSS                                        $(2,094,478)   (3,453,346)    (3,094,210)     (1,965,335)      $ (16,706,505)
                                                ============= =============  =============   =============     ===============

BASIC AND DILUTED LOSS PER SHARE                $     (0.21)  $     (0.35)   $     (0.35)    $     (0.25)
                                                ============= ============   =============   =============

COMMON AND EQUIVALENT SHARES
USED IN COMPUTING PER SHARE
AMOUNTS:
BASIC AND DILUTED                                 10,008,468     9,833,156      8,877,024       7,827,732
                                                =============  ============  =============   =============

<FN>
See notes to financial statements.
</FN>
</TABLE>

                                       35
<PAGE>

<TABLE>
                                                             BIOTIME, INC.
                                                     (A Development Stage Company)
<CAPTION>
                                                  STATEMENTS OF SHAREHOLDERS' EQUITY
                                                                                                      
                                      Series A Convertible                                               Deficit       
                                       Preferred Shares           Common Shares                        Accumulated
                                    ----------------------  -----------------------                      During
                                     Number                   Number                 Contributed       Development
                                    of Shares     Amount     of Shares    Amount       Capital           Stage
                                    ----------  ----------  ----------  -----------  ------------   ---------------
                                                                                                  
<S>                                 <C>         <C>         <C>         <C>          <C>            <C>  
BALANCE, November 30, 1990
 (date of inception)                    --          --          --           --            --              --
NOVEMBER 1990                                               1,312,761    $     263
 Common shares issued for cash
DECEMBER 1990:                                              
 Common shares issued for
 stock of a separate entity at
   fair value                                               1,050,210      137,400      
 Contributed equipment at                                                              $  16,425
   appraised value
 Contributed cash                                                                         77,547
MAY 1991:
 Common shares issued for cash
   less offering costs                                        101,175       54,463
 Common shares issued for stock                               
   of a separate entity at fair
   value                                                      100,020       60,000
JULY 1991:                                                     
 Common shares issued for
    services performed                                         30,000       18,000
AUGUST-DECEMBER 1991                  
 Preferred shares issued for
 cash less offering costs of
    $125,700                          360,000    $474,300
MARCH 1992:                                                 
 Common shares issued for
 cash less offering costs of
 $1,015,873                                                  2,173,500    4,780,127
 Preferred shares converted          
 into common shares                  (360,000)   (474,300)     360,000      474,300
 Dividends declared and paid                                                                           
 on preferred shares                                                                                $  (24,831)
MARCH  1994:
 Common shares issued for cash
   less offering  costs
   of  $865,826                                             2,805,600    3,927,074
JANUARY-JUNE 1995: 
Common shares repurchased
 with cash                                                   (253,800)    (190,029)
NET LOSS SINCE INCEPTION                                                                            $(6,099,136)
                                    ----------  ----------  ----------  -----------    ----------   -------------
BALANCE AT JUNE 30, 1995                --      $           7,679,466    9,261,598     $  93,972    $(6,123,967)

Common shares issued for cash                                 
  (exercise of options and
  warrants)                                                   496,521    1,162,370
Common shares issued for cash
  (lapse of recision)                                         112,176       67,300
Common shares repurchased with                               
   cash                                                       (18,600)     (12,693)
Common shares warrants and
   options granted for services                                            356,000
NET LOSS                                                                                             (1,965,335)
                                    ----------  ----------  ----------  -----------    ----------   -------------
BALANCE AT JUNE 30, 1996                --      $   --      8,269,563   10,834,575        93,972     (8,089,302)
<FN>
See notes to financial statements.                                                               (Continued)
</FN>
</TABLE>


                                       36
<PAGE>


<TABLE>
                                  BIOTIME, INC.
                          (A Development Stage Company)
<CAPTION>
                       STATEMENTS OF SHAREHOLDERS' EQUITY


(Continued)
 

                                       Series A Convertible                                                Deficit
                                         Preferred Shares          Common Shares                        Accumulated
                                       ---------------------  -------------------------                    During
                                        Number                  Number of              Contributed      Development
                                       of Shares    Amount       Shares       Amount     Capital           Stage
                                       ---------- ----------  ------------- ----------- -----------  -----------------
<S>                                    <C>        <C>         <C>           <C>         <C>          <C>
 Common shares issued for cash less                               849,327    5,491,583
 offering costs of $170,597
 Common shares issued for cash                                    490,689    1,194,488
 (exercise of options and warrants)
 Common shares warrants and options                                            105,000
 granted for service
NET LOSS                                                                                                  (3,094,210)
                                       ---------- ----------    ----------- -----------   ---------     --------------
BALANCE AT JUNE 30, 1997                   --     $   --         9,609,579  $17,625,646    $ 93,972     $(11,183,512)

Common shares issued for cash
(exercise of options)                                              337,500     887,690
Common shares warrants and options                                             
granted for service                                                             38,050
Common shares issued for services                                      500       6,250
NET LOSS                                                                                                  (3,453,346)
                                       ---------- ----------    ----------- -----------   ---------     --------------
BALANCE AT JUNE 30,1998                    --         --         9,947,579  $18,557,636    $93,972      $(14,636,858)

Common shares issued for cash                                       
(exercise of options and warrants)                                  84,000      395,730
Common shares options granted for                                  
services                                                                        50,000
Common shares issued for                                           
 services                                                            1,500      18,750
NET LOSS                                                                                                  (2,094,478)
                                       ---------- ----------    ----------- -----------   ---------     --------------
BALANCE AT DECEMBER 31, 1998               --     $   --        10,033,079  $19,022,116    $93,972      $(16,731,336)
                                       ========== ==========    =========== ===========   =========     ==============

<FN>
See Notes to financial statements.                                                                        (Concluded)
</FN>
</TABLE>


                                       37
<PAGE>


<TABLE>
                                  BIOTIME, INC.
                          (A Development Stage Company)
<CAPTION>
                            STATEMENTS OF CASH FLOWS

                                                   
                                                   
                                                   
                                                   
                                                     Six Months
                                                       Ended                    Year Ended June 30,           Period from Inception
                                                     December 31,  --------------------------------------------  (November 30,1990)
                                                        1998             1998           1997          1996      to December 31,1998
                                                  ---------------- --------------- ------------- -------------- -------------------
                                                                                                                
<S>                                               <C>               <C>            <C>           <C>                <C>
OPERATING ACTIVITIES:
Net loss                                          $   (2,094,478)   $  (3,453,346) $ (3,094,210) $  (1,965,335)     $  (16,706,505)
                                                                                    
Adjustments to reconcile net loss to net cash 
   used in operating activities:
 Deferred revenue                                       (250,000)        (500,000)      (62,500)                          (812,500)
 Depreciation                                             28,582           49,284        41,023         35,886             217,107
 Cost of services - shares, options and warrants          78,750           44,300       240,821        167,932             577,328
 Supply reserves                                                          100,000       100,000                            200,000
 Changes in operating assets and liabilities:
  Research and development supplies on hand                                                           (200,000)           (200,000)
  Prepaid expenses and other current                      87,367           13,197      (180,837)        24,705            (138,545)
   assets
  Deposits and other assets                               34,000          (65,000)      (24,722)                           (60,700)
  Accounts payable                                        47,673          (59,638)      119,939       (182,198)            237,203
  Accrued compensation                                                   (175,000)      175,000
  Deferred revenue                                                       (400,000)    1,400,000                          1,000,000
                                                   --------------   --------------  ------------- --------------     --------------
Net cash used in operating activities                 (2,068,106)      (4,446,203)   (1,285,486)    (2,119,010)        (15,686,612)
                                                   --------------   --------------  ------------- --------------     --------------

INVESTING ACTIVITIES:
Sale of investments                                                                                                        197,400
Purchase of short-term investments                                                                                      (9,946,203)
Redemption of short-term investments                                                                                     9,946,203
Purchase of equipment and furniture                       (4,391)        (147,340)       (32,072)       (28,442)          (367,156)
                                                   --------------   --------------  ------------- --------------     --------------
Net cash used in investing activities                     (4,391)        (147,340)       (32,072)       (28,442)          (169,756)
                                                   --------------   ---------------  ------------- --------------     --------------

FINANCING ACTIVITIES:
Issuance of preferred shares for cash                                                                                      600,000
Preferred shares placement costs                                                                                          (125,700)
Issuance of common shares for cash                                                    5,662,180                         16,373,106
Common shares placement costs                                                          (170,597)                        (2,052,296)
Net proceeds from exercise of common share             
options and warrants                                    395,730          887,690      1,194,488     1,162,370            3,640,278
Contributed capital - cash                                                                                                  77,547
Dividends paid on preferred shares                                                                                         (24,831)
Repurchase of common shares                                                                           (12,693)            (202,722)
                                                  --------------   --------------  ------------- --------------       --------------
Net cash provided by financing activities               395,730          887,690       6,686,071     1,149,677           18,285,382
                                                  --------------   --------------  ------------- --------------       --------------
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS     (1,676,767)      (3,705,853)      5,368,513      (997,775)           2,429,014

CASH AND CASH EQUIVALENTS:
At beginning of period                                4,105,781        7,811,634      2,443,121      3,440,896                   --
                                                  --------------   --------------  ------------- --------------       --------------
At end of period                                  $   2,429,014    $   4,105,781   $  7,811,634  $   2,443,121        $   2,429,014
                                                  ==============   ==============  ============= ==============       ==============
<FN>
See notes to financial statements.                                                                                       (Continued)
</FN>
</TABLE>

                                       38
<PAGE>


<TABLE>
                                  BIOTIME, INC.
                          (A Development Stage Company)
<CAPTION>
                            STATEMENTS OF CASH FLOWS

                                                   
                                                   
                                                   
                                                   
                                                     Six Months
                                                       Ended                    Year Ended June 30,           Period from Inception
                                                     December 31,  --------------------------------------------  (November 30,1990)
                                                        1998             1998           1997          1996      to December 31,1998
                                                  ---------------- --------------- ------------- -------------- -------------------
<S>                                               <C>              <C>             <C>           <C>            <C>
NONCASH FINANCING AND
 INVESTING ACTIVITIES:

Receipt of contributed equipment                                                                                    $      16,425
Issuance of common shares                                                                                           
 in exchange for shares of
 common stock of Cryomedical
 Sciences, Inc. in a stock-for-stock
 transaction                                                                                                        $     197,400
Granting of options and warrants for
 services                                         $   50,000        $   38,050      $   105,000    $   356,000       $    567,050
Issuance of common shares in exchange                                           
for services                                      $   18,750        $    6,250                                       $     25,000

<FN>
See notes to financial statements.                                                                                     (Concluded)
</FN>
</TABLE>


                                       39
<PAGE>




                                  BIOTIME, INC.
                          (A Development Stage Company)

                          NOTES TO FINANCIAL STATEMENTS

1.     GENERAL AND DEVELOPMENT STAGE ENTERPRISE

       General - BioTime,  Inc. (the Company) was organized November 30, 1990 as
       a  California  corporation.  The  Company is a  biomedical  organization,
       currently in the development  stage, which is engaged in the research and
       development  of  synthetic  plasma  expanders,  blood  volume  substitute
       solutions,  and organ preservation solutions,  for use in surgery, trauma
       care, organ transplant procedures, and other areas of medicine.

       Certain   Significant  Risks  and  Uncertainties  -  The  preparation  of
       financial  statements in conformity  with generally  accepted  accounting
       principles  requires  management to make estimates and  assumptions  that
       affect the reported  amounts of assets and  liabilities and disclosure of
       contingent assets and liabilities at the date of the financial statements
       and the reported  amounts of revenues and expenses  during the  reporting
       period.  Such  management  estimates  include  certain  accruals.  Actual
       results could differ from those estimates.

       The  Company's  operations  are  subject to a number of factors  that can
       affect its  operating  results  and  financial  condition.  Such  factors
       include  but are not  limited to the  following:  the results of clinical
       trials of the Company's products;  the Company's ability to obtain United
       States Food and Drug  Administration and foreign  regulatory  approval to
       market its products;  competition from products  manufactured and sold or
       being  developed  by other  companies;  the price of and  demand  for any
       Company  products that are  ultimately  sold;  the  Company's  ability to
       obtain additional  financing and the terms of any such financing that may
       be obtained;  the Company's ability to negotiate  favorable  licensing or
       other  manufacturing  and  marketing  agreements  for its  products;  the
       availability  of  ingredients  used in the  Company's  products;  and the
       availability of reimbursement for the cost of the Company's products (and
       related  treatment) from government  health  administration  authorities,
       private health coverage insurers and other organizations.

       Development  Stage  Enterprise  - Since  inception,  the Company has been
       engaged in research and  development  activities in  connection  with the
       development  of  synthetic  plasma  expanders,  blood  volume  substitute
       solutions  and organ  preservation  products.  The  Company  has  limited
       operating  revenues and has incurred operating losses of $16,706,505 from
       inception  to  December  31,  1998.  The  successful  completion  of  the
       Company's  product   development  program  and,   ultimately,   achieving
       profitable   operations  is  dependent   upon  future  events   including
       maintaining   adequate   capital  to  finance   its  future   development
       activities,  obtaining  regulatory approvals for the products it develops
       and achieving a level of revenues  adequate to support the Company's cost
       structure.


                                       40
<PAGE>


2.     SIGNIFICANT ACCOUNTING POLICIES

       Change in fiscal year - On November 12,  1998,  the Board of Directors of
       BioTime  determined that it would be in the best interests of the Company
       and its  shareholders to change the Company's fiscal year from one ending
       on June 30 to one ending on  December  31 and,  accordingly,  the Company
       adopted a December 31 or calendar year-end  beginning on January 1, 1999.
       Accordingly,  the  accompanying  statements of operations,  shareholders'
       equity and cash flows  include the  transition  fiscal period for the six
       months from July 1, 1998 to December 31, 1998.

       The following are the unaudited  results of operations for the six months
       ended December 31, 1997:

         Total Expenses                     $2,432,888
         Operating Loss                      1,782,888
         Net Loss                            1,619,798
         Net Loss Per Share                      0.17

       Equipment is stated at cost or, in the case of donated equipment, at fair
       market  value.  Equipment is being  depreciated  using the  straight-line
       method over a period of thirty-six to eighty-four months.

       Patent  costs  associated  with  obtaining   patents  on  products  being
       developed  are  expensed  as  research  and  development   expenses  when
       incurred.  These costs  totaled  $47,781 for the six month  period  ended
       December 31, 1998, $81,303,  $95,362 and $95,598 for the years ended June
       30, 1998, 1997, and 1996,  respectively,  and cumulatively,  $501,063 for
       the period from inception (November 30, 1990) to December 31, 1998.

       Revenue  recognition  - License  revenue is  recognized  ratably over the
       development period of the Hextend product which was originally determined
       to be two years.  Milestone  payments  are  recognized  as  revenue  when
       milestones have been acheived.

       Research and  development  costs are expensed  when  incurred and consist
       principally  of salaries,  payroll taxes,  research and laboratory  fees,
       hospital and  consultant  fees related to the  clinical  trials,  and the
       Company's PentaLyte solution for use in human clinical trials.

       Stock-based compensation - The Company accounts for stock-based awards to
       employees  using the intrinsic value method in accordance with Accounting
       Principles  Board  Opinion  No.  25,   Accounting  for  Stock  Issued  to
       Employees.

       Stock split - In October 1997, the Company effected a three-for-one split
       of its common shares.  All share and per share amounts have been restated
       to reflect the stock split for all periods presented.


                                       41
<PAGE>



       Net loss per share - In February 1997, the Financial Accounting Standards
       Board  issued  Statement  of  Financial  Accounting  Standards  No.  128,
       "Earnings  per Share"  (SFAS 128).  The Company  adopted  SFAS 128 in the
       second  quarter of fiscal  1998 and  restated  earnings  (loss) per share
       (EPS) data for prior  periods to conform with SFAS 128. SFAS 128 requires
       a dual presentation of basic and diluted EPS. Basic EPS excludes dilution
       and is computed by dividing  net income  (loss) by the  weighted  average
       number of common  shares  outstanding  during  the  period.  Diluted  EPS
       reflects the potential dilution from securities and other contracts which
       are  exercisable  or  convertible  into  common  shares.  As a result  of
       operating  losses,  there is no  difference  between  basic  and  diluted
       calculations of EPS.

       Comprehensive Income (Loss) - In July 1998, the Company adopted Statement
       of  Financial  Accounting  Standards  No. 130,  "Reporting  Comprehensive
       Income," which requires an enterprise to report,  by major components and
       as a single  total,  the  change in net assets  during  the  period  from
       nonowner  sources.  Comprehensive  income (loss) was the same as net loss
       for all periods presented.

       Segment  information  - The  Company  operates  in the single  segment of
       producing aqueous based synthetic solutions used in medical  applications
       and is currently in the development stage of this segment.

       Recently  issued  accounting  standards  - In June  1998,  the  Financial
       Accounting  Standards Board issued Statement of Accounting  Standards No.
       133,  "Accounting  for Derivative  Instruments  and Hedging  Activities,"
       (SFAS 133) which  establishes  accounting  and  reporting  standards  for
       derivative instruments and for hedging activities. SFAS 133 requires that
       entities  recognize all  derivatives as either assets or liabilities  and
       measure those  instruments  at fair value.  Adoption of this statement is
       not  expected  to  have a  material  impact  on the  Company's  financial
       position,  results of  operations  or cash flows.  The Company will adopt
       SFAS 133 in its  financial  statements in the first quarter of the fiscal
       year ending December 31, 1999.


3.     LICENSE AGREEMENT

       In April 1997, BioTime and Abbott Laboratories ("Abbott") entered into an
       Exclusive License Agreement (the "License Agreement") under which BioTime
       granted to Abbott an exclusive  license to manufacture and sell BioTime's
       proprietary  blood plasma volume expander  solution Hextend in the United
       States and Canada for certain therapeutic uses.

       Under the License  Agreement,  Abbott has agreed to pay the Company up to
       $40,000,000 in license fees; of which  $1,650,000 was paid as of December
       31, 1998, and an additional $850,000 will become payable upon achievement
       of specific milestones. Up to $37,500,000 of additional license fees will
       be payable  based upon  annual net sales of Hextend at the rate of 10% of
       annual net sales if annual net sales exceed  $30,000,000  or 5% if annual
       net sales are between  $15,000,0000 and $30,000,000.  Abbott's obligation
       to pay  license  fees on sales of Hextend  will  expire on the earlier of
       January  1, 2007 or, on a country  by  country  basis,  when all  patents
       protecting  Hextend in the  applicable  country expire or any third party
       obtains  certain  regulatory  approvals  to market a  generic  equivalent
       product in that country.


                                       42
<PAGE>



       In addition to the license fees, Abbott will pay the Company a royalty on
       annual  net  sales  of  Hextend.  The  royalty  rate  will  be 5% plus an
       additional  .22% for each increment of $1,000,000 of annual net sales, up
       to a maximum royalty rate of 36%. Abbott's obligation to pay royalties on
       sales of  Hextend  will  expire in the United  States or Canada  when all
       patents protecting Hextend in the applicable country expire and any third
       party obtains certain regulatory approvals to market a generic equivalent
       product in that country.

       Abbott has agreed that the Company may convert Abbott's exclusive license
       to a  non-exclusive  license or may  terminate  the  license  outright if
       certain  minimum  sales and  royalty  payments  are not met.  In order to
       terminate the license outright, BioTime would pay a termination fee in an
       amount  ranging from the  milestone  payments made by Abbott to an amount
       equal  to  three  times  prior  year  net  sales,   depending  upon  when
       termination  occurs.  Abbott's  exclusive  license  also  may  terminate,
       without the payment of termination  fees by the Company,  if Abbott fails
       to market Hextend.  Management  believes that the probability of payments
       of any termination fee by the Company is remote.

       The  Company  has  deferred  recognition  of  $187,500 of the license fee
       revenue  received  for signing the License  Agreement.  The Company  will
       recognize the deferred revenue during the fiscal year ending December 31,
       1999. The additional  milestone  payments that may be earned when the NDA
       is approved and when sales of Hextend commence will be recognized  during
       the periods in which the milestones are achieved. Additional license fees
       and royalty payments will be recognized as the related sales are made and
       reported to the Company by Abbott.

4.     SHAREHOLDERS' EQUITY

       During  June  1994,  the  Board of  Directors  authorized  management  to
       repurchase up to 200,000 of the  Company's  common shares at market price
       at the time of purchase. As of December 31, 1998, 90,800 shares have been
       repurchased and retired. No shares have been repurchased since August 28,
       1995.

       During  September  1995,  the  Company  entered  into  an  agreement  for
       financial   advisory   services  with  Greenbelt   Corp.,  a  corporation
       controlled  by Alfred D.  Kingsley and Gary K.  Duberstein,  who are also
       shareholders  of the Company.  Under this agreement the Company issued to
       the financial  advisor  warrants to purchase  311,276  Common Shares at a
       price of $1.93 per  share,  and the  Company  agreed to issue  additional
       warrants to purchase up to an additional 622,549 Common Shares at a price
       equal to the  greater  of (a)  150% of the  average  market  price of the
       CommonShares  during the three  months  prior to issuance  and (b) $2 per
       share.   The   additional   warrants  were  issued  in  equal   quarterly
       installments  over a two year period,  beginning  October 15,  1995.


                                       43
<PAGE>



       The exercise price and number of Common Shares for which the warrants may
       be exercised are subject to  adjustment to prevent  dilution in the event
       of a  stock  split,  combination,  stock  dividend,  reclassification  of
       shares, sale of assets,  merger or similar transaction.  The warrants are
       exercisable at the following prices:  466,912 at $1.93 per share;  77,818
       at $2.35 per share; 77,818 at $9.65 per share; 77,818 at $9.42 per share;
       77,818 at $10.49  per share;  77,818 at $15.74  per share;  and 77,818 at
       $13.75 per share.  The total  value of these  warrants  at the  agreement
       date,  estimated to be $300,000,  was  capitalized in fiscal 1996 and was
       amortized over the two year term of the agreement.

       During  September  1996,  the Company  entered into an agreement  with an
       individual to act as an advisor to the Company. In exchange for services,
       as defined,  to be rendered by the advisor  through  September  1999, the
       Company issued warrants, with five year terms, to purchase 124,510 common
       shares at a price of $6.02 per share.  The  exercise  price and number of
       Common  Shares for which the  warrants  may be  exercised  are subject to
       adjustment   to  prevent   dilution  in  the  event  of  a  stock  split,
       combination, stock dividend,  reclassification of shares, sale of assets,
       merger or similar  transaction.  Warrants for 77,775 common shares vested
       and became  exercisable and  transferable  when issued;  warrants for the
       remaining 46,735 common shares vested ratably through  September 1997 and
       became  exercisable and  transferable as vesting  occured.  The estimated
       value of the services to be performed is $60,000 and that amount has been
       capitalized  and is being  amortized  over  the  three  year  term of the
       agreement.

       On February 5, 1997, the Company completed a subscription rights offering
       raising $5,662,180, through the sale of 849,327 common shares.

       During  April 1998,  the Company  entered into a new  financial  advisory
       services  agreement  with Greenbelt  Corp. The agreement  provides for an
       initial  payment of $90,000  followed by an  advisory  fee of $15,000 per
       month that will be paid quarterly. The agreement will expire on March 31,
       2000,  but either party may terminate the agreement  earlier upon 30 days
       prior written notice.


5.     STOCK OPTION PLAN

       The Board of Directors of the Company  adopted the 1992 Stock Option Plan
       (the  "Plan")  during  September  1992.  The  Plan  was  approved  by the
       shareholders  at the 1992 Annual Meeting of  Shareholders  on December 1,
       1992.  Under the Plan,  as amended,  the Company has  reserved  1,800,000
       common shares for issuance under options granted to eligible persons.  No
       options may be granted  under the Plan more than ten years after the date
       the Plan was adopted by the Board of  Directors,  and no options  granted
       under the Plan may be exercised  after the  expiration  of ten years from
       the date of grant.

       Under the Plan,  options  to  purchase  common  shares  may be granted to
       employees,  directors and certain consultants at prices not less than the
       fair market value at date of grant for  incentive  stock  options and not
       less than 85% of fair market value for other stock options. These options
       expire  five to ten  years  from  the  date  of  grant  and may be  fully
       exercisable immediately, or may be exercisable according to a schedule or
       conditions  specified by the Board of Directors or the Option  Committee.
      


                                       44
<PAGE>



       During the three years  ended June 30,  1998,  1997 and 1996,  employees,
       including directors, were granted options to purchase 17,500, 123,000 and
       6,000 common shares, respectively, and non-employees were granted options
       to  purchase  14,500,  165,000 and 180,000  common  shares  respectively.
       During the six months ended December 31, 1998, no options were granted to
       employees,  and an option to  purchase  20,000  shares  was  granted to a
       consultant.  The options were valued at $50,000  based on the  underlying
       services provided and were recorded as consulting  expense in the quarter
       ended  December 31,  1998.  At December  31,  1998,  599,000  shares were
       available for future grants under the Option Plan.
<TABLE>
<CAPTION>
       Option activity under the Plan is as follows:
                                                                    Number of Shares            Weighted Average
                                                                                                 Exercise Price
                                                                  ---------------------       ----------------------
<S>                                                                     <C>                          <C>
Outstanding, July 1, 1995 (552,000 exercisable at a weighted         
average price of $2.45)                                                 675,000                     $ 2.21
Granted (weighted average fair value of $0.74 per share)                186,000                       1.07
Exercised                                                               171,000                       1.81
Canceled                                                                   --                          --
                                                                  ---------------------       ----------------------
Outstanding, June 30, 1996 (537,000 exercisable at a                  
weighted average price of $2.26)                                        690,000                       2.01
Granted (weighted average fair value of $6.83 per share)                288,000                       7.37
Exercised                                                               138,000                       2.37
Canceled                                                                   --                          --
                                                                  ---------------------       ----------------------
Outstanding, June 30, 1997 (678,000 exercisable at a              
weighted average price of $4.22)                                        840,000                       3.78
Granted (weighted average fair value of $18.25 per share)                32,000                      16.56
Exercised                                                               337,500                       2.63
Canceled                                                                   --                          --
                                                                  ---------------------       ----------------------
Outstanding, June 30, 1998 (411,500 exercisable at a              
weighted average price of $6.52)                                        534,500                       5.28
Granted (weighted average fair value of $2.50 per share)                 20,000                       7.25
Exercised                                                                84,000                       4.71
Canceled                                                                   --                          --
                                                                  ---------------------       ----------------------
Outstanding, December 31, 1998                                          470,500                     $ 5.46
                                                                  ---------------------       ----------------------
</TABLE>


                                       45
<PAGE>



Additional  information regarding options outstanding as of December 31, 1998 is
as follows:
<TABLE>
<CAPTION>
                                            Options Outstanding                                    Options Exercisable
                                          -------------------------                        -------------------------------------
                                               Weighted Avg.                                
      Range of                 Number           Remaining              Weighted Avg.           Number            Weighted Avg.
   Exercise Prices           Outstanding    Contractual Life (yrs)    Exercise Price         Exercisable        Exercise Price
- ---------------------     ---------------    -------------------    -------------------    ---------------    ------------------
   <S>                       <C>                    <C>                   <C>                 <C>                   <C>   
     $0.66-1.00               57,000                1.64                  $0.96                57,000               $0.96
     1.10-1.13               156,000                4.34                   1.12               126,000                1.13
        3.39                  15,000                0.30                   3.39                15,000                3.39
     6.00-7.25               105,500                4.21                   6.40               105,500                6.40
    10.33-13.00              115,000                3.34                  10.55               115,000               10.55
       18.25                  22,000                3.90                  18.25                22,000               18.25
                          ---------------                                                  ---------------
                             470,500                3.59                  $5.46               440,500               $5.76
                          ---------------                                                  ---------------
</TABLE>


       As discussed in Note 1, the Company continues to account for its employee
       stock-based  awards using the intrinsic  value method in accordance  with
       Accounting  Principles  Board No.  25,  Accounting  for  Stock  Issued to
       Employees and its related interpretations.  Accordingly,  no compensation
       expense has been  recognized  in the  financial  statements  for employee
       stock  arrangements.  Options to purchase 197,500 shares were outstanding
       to employees at December 31, 1998.  Options granted to non-employees have
       been  recognized in the financial  statements at the estimated fair value
       of the services or benefit  provided.  Options to purchase 273,000 shares
       were outstanding to non-employees at December 31, 1998.

       Statement of  Financial  Accounting  Standards  No. 123,  Accounting  for
       Stock-Based Compensation, (SFAS 123) requires the disclosure of pro forma
       net income and earnings per share had the Company  adopted the fair value
       method as of the beginning of fiscal 1995. Under SFAS 123, the fair value
       of  stock-based  awards to  employees  is  calculated  through the use of
       option pricing models, even though such models were developed to estimate
       the fair value of freely  tradable,  fully  transferable  options without
       vesting restrictions, which significantly differ from the Company's stock
       option  awards.


                                       46
<PAGE>



       These models also require subjective assumptions,  including future stock
       price volatility and expected time to exercise,  which greatly affect the
       calculated  values.  The  Company's  calculations  were  made  using  the
       Black-Scholes  option pricing model with the following  weighted  average
       assumptions:  expected  life,  24 - 60 months  following  vesting;  stock
       volatility, 83.87%, 95.00%, and 92.00% for the years ended June 30, 1998,
       1997 and 1996, respectively;  risk free interest rates, 5.64%, 5.96%, and
       5.75% for the years ended June 30, 1998, 1997 and 1996, respectively; and
       no dividends  during the expected  term. The Company's  calculations  are
       based  on a  multiple  option  valuation  approach  and  forfeitures  are
       recognized as they occur. If the computed fair values for the years ended
       June 30, 1998,  1997,  1996 awards had been amortized to expense over the
       vesting  period  of the  awards,  pro  forma  net loss  would  have  been
       $3,665,915  ($0.37  per share) in 1998,  $3,983,890  ($0.44 per share) in
       1997,  and  $1,969,755  ($0.25 per share) in 1996.  No  employee  options
       vested  or were  granted  in the six  months  ended  December  31,  1998.
       Therefore,  pro forma net loss is the same as  recorded  net loss for the
       six months ended December 31, 1998. The impact of outstanding  non-vested
       stock options  granted prior to 1996 has been excluded from the pro forma
       calculation;  accordingly,  the six months ending  December 31, 1998, and
       the years ended June 30, 1998,  1997, 1996 pro forma  adjustments are not
       indicative of future period pro forma  adjustments,  when the calculation
       will apply to all applicable stock options.


6.     COMMITMENTS AND CONTINGENCIES

       The Company has  employment  agreements  with six  officers  who are also
       shareholders,  for five-year terms, five of which expire in June 2001 and
       one which  expires in April  2002.  All provide  for base  salaries  with
       annual  increases.  The agreements  also provide that in the event any of
       the officer's employment terminates,  voluntarily or involuntarily, after
       a change in control of the Company through an acquisition of voting stock
       or assets,  or a merger or  consolidation  with  another  corporation  or
       entity,  the executive  officers  will be entitled to severance  payments
       equal to the  greater of (a) 2.99 times the average  annual  compensation
       for the  preceding  five years or (b) the  balance of the base salary for
       the  unexpired  portion of the term of the  employment  agreement.  These
       officers/shareholders  have signed intellectual  property agreements with
       the Company as a condition of their employment.

       The Company  occupies  its office and  laboratory  facility in  Berkeley,
       California  under a lease that will expire on March 31, 2004. The Company
       presently occupies  approximately  5,200 square feet of space. The amount
       of space  leased by the  Company  will  increase by  approximately  3,000
       square feet and the monthly rent will  increase to $10,000 per month when
       the additional space is made available to the Company,  which is expected
       to occur on or around June 30, 1999.  The rent will increase  annually by
       the greater of 3% and the  increase in the local  consumer  price  index,
       subject to a maximum annual  increase of 7%. Rent expense totaled $32,694
       for the six month period ending December 31, 1998, $62,990,  $59,376, and
       $58,188,  for each of the three years ended June 30, 1998, 1997 and 1996,
       respectively; and cumulatively, $322,386 for the period from inception to
       December 31, 1998.


                                       47
<PAGE>



7.     INCOME TAXES

       The primary components of the net deferred tax asset are:

                                
                                
                                        Six Months Ended        Year Ended
                                       December 31, 1998       June 30, 1998
                                     --------------------   -------------------
   Deferred Tax Asset:
   NOL Carryforwards                     $7,256,851              $5,125,447
   Research & Development Credits           622,516                 444,398
   Other, net                               320,790                 327,492
                                     --------------------   -------------------
                      Total               8,200,157               5,897,337
   Valuation allowance                   (8,200,157)             (5,897,337)
                                     --------------------   -------------------
   Net deferred tax asset             $      -0-               $     -0-
                                     ====================   ===================


       No tax benefit has been recorded through December 31, 1998 because of the
       net operating losses incurred and a full valuation allowance provided.  A
       valuation allowance is provided when it is more likely than not that some
       portion of the  deferred  tax asset  will not be  realized.  The  Company
       established a 100% valuation  allowance at December 31, 1998 and June 30,
       1998 and 1997 due to the  uncertainty  of  realizing  future tax benefits
       from its net operating loss carryforwards and other deferred tax assets.

       As of December 31, 1998, the Company has net operating loss carryforwards
       of  approximately  $19,600,000  for federal and  $9,800,000 for state tax
       purposes,  which  begin to  expire  during  fiscal  years  2006 and 1999,
       respectively.

       Internal  Revenue Code Section 382 places a limitation  (the "Section 382
       Limitation")  on the amount of taxable  income which can be offset by net
       operating loss ("NOL") carryforwards after a change in control (generally
       greater than 50% change in ownership) of a loss  corporation.  California
       has similar rules. Generally,  after a control change, a loss corporation
       cannot deduct NOL  carryforwards in excess of the Section 382 Limitation.
       Due to these "change in ownership" provisions, utilization of the NOL and
       tax credit carryforwards may be subject to an annual limitation regarding
       their utilization against taxable income in future periods.


                                       48
<PAGE>



8.     RELATED PARTY TRANSACTIONS

       During the six months  ended  December  31, 1998 and the years ended June
       30,  1998,  1997,  and  1996,  $6,119,  $15,649,  $33,500,  and  $36,000,
       respectively,  of fees for  consulting  services were paid to a member of
       the Board of Directors.


9.     SUBSEQUENT EVENT

       On March 9, 1999, the Company  completed a subscription  rights  offering
       raising $7,328,626, through the sale of 751,654 common shares.


10.    QUARTERLY RESULTS (UNAUDITED)

       Summarized  unaudited  results of operations  for each quarter of the six
       months ended  December 31, 1998 and the fiscal years ended June 30, 1998,
       1997, 1996 are as follows:
<TABLE>

<CAPTION>

                                    First            Second            Third           Fourth            Total
                                   Quarter           Quarter          Quarter          Quarter            Year
                                   -------           -------          -------          -------           ------
         <S>                      <C>              <C>              <C>                <C>            <C>
          Six Months Ended
          December 31, 1998
         -------------------

         Revenue                  $  125,000         $125,000                                           $250,000
         Net loss                 $1,137,742         $956,736                                         $2,094,478
         Net loss per share         $ 0.11            $ 0.10                                               $0.21


         Fiscal Year Ended
         June 30, 1998
         -----------------

         Revenue                   $125,000         $525,000          $125,000         $375,000       $1,150,000
         Net loss                  $982,621         $637,177        $1,071,538         $762,010       $3,453,346
         Net loss per share         $ 0.10           $ 0.06           $ 0.11            $ 0.08           $ 0.35


         Fiscal Year Ended
         June 30, 1997
         -----------------

         Revenue                        -                -                               $65,500          $62,500
         Net loss                   $718,356         $754,487          $520,282       $1,101,085       $3,094,210
         Net loss per share          $ 0.26           $ 0.27            $ 0.17           $ 0.37          $ 1.05


         Fiscal Year Ended
         June 30, 1996
         -----------------

         Revenue                       -                -                 -                -               -
         Net loss                   $377,407         $463,395          $413,230         $711,303       $1,965,335
         Net loss per share          $ 0.13           $ 0.18            $ 0.18           $ 0.27          $0.75

</TABLE>

                                       49
<PAGE>


Item 9.   Changes in and Disagreements with Accountants on Accounting and 
            Financial Disclosure

     Not applicable.


                                       50
<PAGE>


                                    PART III

Item 10.   Directors and Executive Officers of the Registrant.

Directors and Executive Officers

         The names  and ages of the  directors  and  executive  officers  of the
Company are as follows:

         Paul Segall, Ph.D., 56, is the Chairman and Chief Executive Officer and
has served as a director of the Company since 1990. He was a research  scientist
for Cryomedical  Sciences,  Inc. ("CMSI") and a member of its Board of Directors
from 1987 to December  1990,  serving as Director of Research and Vice President
of Research for CMSI, from April 1988 until 1989. Dr. Segall received a Ph.D. in
Physiology from the University of California at Berkeley in 1977.

         Ronald S. Barkin, 53, became President of BioTime during October, 1997,
after serving as Executive Vice President  since April 1997. Mr. Barkin has been
a director of the Company since 1990.  Before  becoming an executive  officer of
the Company, Mr. Barkin practiced civil and corporate law for more than 25 years
after getting a J.D. from Boalt Hall, University of California at Berkeley.

         Victoria  Bellport,  33,  is  the  Chief  Financial  Officer  and  Vice
President  and has been a director  of the  Company  since  1990.  Ms.  Bellport
received a B.A. in Biochemistry from the University of California at Berkeley in
1988.

         Hal  Sternberg,  Ph.D.,  45, is the Vice  President of Research and has
been a director of the Company since 1990. He was a research  scientist for CMSI
from 1987 to December 1990,  serving as Vice President of Biochemistry  for CMSI
from November 1987 to 1989. Dr. Sternberg was a visiting  scientist and research
Associate at the University of California at Berkeley from  1985-1988,  where he
supervised a team of researchers  studying  Alzheimer's  Disease.  Dr. Sternberg
received his Ph.D. from the University of Maryland in Biochemistry in 1982.

         Harold  Waitz,  Ph.D.,  56, is the Vice  President of  Engineering  and
Regulatory  Affairs and has been a director of the Company  since 1990. He was a
research  scientist  for  CMSI  from  1987 to  December  1990,  serving  as Vice
President of Technology for CMSI from November 1987 to 1989. From 1986-1988, Dr.
Waitz  served  as  Vice  President  of  Research  at the  Winters  Institute,  a
non-profit  biomedical  research   institution,   at  which  Dr.  Waitz  studied
arteriosclerosis  in primates.  He received his Ph.D. in Biophysics  and Medical
Physics from the University of California at Berkeley in 1983.

         Judith  Segall,  45, is the Vice President of Technology and Secretary,
and has been a director of the Company  from 1990  through  1994,  and from 1995
through the  present  date.  She  performed  services  on a contract  basis as a
biochemist  for CMSI during 1989,  until the  formation of BioTime.  Ms.  Segall
received a B.S. in  Nutrition  and Clinical  Dietetics  from the  University  of
California at Berkeley in 1989.


                                       51
<PAGE>



         Jeffrey B.  Nickel,  Ph.D.,  54,  joined the Board of  Directors of the
Company  during March 1997.  Dr.  Nickel is the  President of Nickel  Consulting
through which he has served as a consultant  to companies in the  pharmaceutical
and  biotechnology  industries  since  1990.  Prior to starting  his  consulting
business,  Dr.  Nickel  served in a number of  management  positions  for Syntex
Corporation  and Merck &  Company.  Dr.  Nickel  received  his Ph.D.  in Organic
Chemistry from Rutgers University in 1970.

         Milton H.  Dresner,  72,  joined the Board of  Directors of the Company
during  February 1998. Mr. Dresner is Co-Chairman of the Highland  Companies,  a
diversified organization engaged in the development and ownership of residential
and industrial real estate. Mr. Dresner serves as a director of Avatar Holdings,
Inc., a real estate development company, Hudson General Corporation, an aviation
services  company,  and  Childtime  Learning  Centers,  Inc.  a child  care  and
pre-school education services company.

Executive Officers

         Paul Segall, Ronald S. Barkin, Victoria Bellport, Hal Sternberg, Harold
Waitz and Judith Segall are the only executive officers of BioTime.

         There are no family  relationships  among the  directors or officers of
the Company, except that Paul Segall and Judith Segall are husband and wife.

Directors' Meetings, Compensation and Committees of the Board

         The Board of Directors has an Audit Committee, the members of which are
Jeffrey  Nickel and Milton  Dresner.  The purpose of the Audit  Committee  is to
recommend the engagement of the corporation's independent auditors and to review
their  performance,  the plan, scope and results of the audit, and the fees paid
to the corporation's  independent auditors. The Audit Committee also will review
the Company's accounting and financial reporting procedures and controls and all
transactions between the Company and its officers,  directors,  and shareholders
who beneficially own 5% or more of the Common Shares.

         The Company does not have a standing Nominating Committee.  Nominees to
the Board of Directors are selected by the entire Board.

         The Board of Directors has a Stock Option  Committee  that  administers
the  Company's  1992  Stock  Option  Plan and  makes  grants of  options  to key
employees,  consultants,  scientific  advisory  board  members  and  independent
contractors of the Company, but not to officers or directors of the Company. The
members of the Stock Option  Committee  are Paul Segall,  Ronald S. Barkin,  and
Victoria Bellport. The Stock Option Committee was formed during September 1992.


                                       52
<PAGE>



          During the fiscal year (six months) ended December 31, 1998, the Board
of  Directors  met three  times.  No  director  attended  fewer  than 75% of the
meetings of the Board or any committee on which they served.

          Directors of the Company who are not  employees  receive an annual fee
of $20,000,  which may be paid in cash or in Common  Shares,  at the election of
the director. Directors of the Company and members of committees of the Board of
Directors  who are employees of the Company are not  compensated  for serving as
directors  or  attending  meetings  of the  Board or  committees  of the  Board.
Directors  are  entitled  to  reimbursements  for their  out-of-pocket  expenses
incurred  in  attending  meetings  of the  Board  or  committees  of the  Board.
Directors  who are  employees  of the  Company  are  also  entitled  to  receive
compensation in such capacity.

Executive Compensation

     The  Company  has  entered  into  five-year   employment   agreements  (the
"Employment  Agreements")  with Paul Segall,  the  Chairman and Chief  Executive
Officer;  Victoria Bellport,  the Chief Financial Officer;  Judith Segall,  Vice
President of Technology and Corporate Secretary;  Hal Sternberg,  Vice President
of Research;  and Harold Waitz,  Vice  President of  Engineering  and Regulatory
Affairs.  The  Employment  Agreements  will expire on December  31, 2000 but may
terminate  prior to the end of the term if the employee (1) dies, (2) leaves the
Company,  (3) becomes disabled for a period of 90 days in any 150 day period, or
(4) is  discharged  by the  Board of  Directors  for  failure  to carry  out the
reasonable policies of the Board, persistent  absenteeism,  or a material breach
of a covenant.  Under the  Employment  Agreement,  the  executive  officers  are
presently  receiving  an annual  salary of $99,000,  and will receive a one-time
cash bonus of $25,000 if the  Company  receives  at least  $1,000,000  of equity
financing from a pharmaceutical company. Each executive officer will be entitled
to seek a modification of his or her Employment  Agreement before the expiration
of the five year term if the market value of the Company's  outstanding  capital
stock exceeds $75,000,000.

          In the event of the executive  officer's  death during the term of his
or her Employment  Agreement,  the Company will pay his or her estate his or her
salary for a period of six month or until  December  31, 2000,  whichever  first
occurs.  In the  event  that  the  executive  officer's  employment  terminates,
voluntarily or  involuntarily,  after a change in control of the Company through
an acquisition of voting stock,  an  acquisition of the Company's  assets,  or a
merger or consolidation of the Company with another  corporation or entity,  the
executive  officers  will be entitled  to  severance  compensation  equal to the
greater  of (a)  2.99  times  his or her  average  annual  compensation  for the
preceding  five  years and (b) the  balance  of his or her base  salary  for the
unexpired portion of the term of his Employment Agreement.

         The Company  also  entered  into a similar  employment  agreement  with
Ronald S. Barkin, which commenced on April 1, 1997 and expires on March 31, 2002

          Each  executive  officer has also  executed an  Intellectual  Property
Agreement  which  provides  that the  Company  is the  owner  of all  inventions
developed by the executive officer during the course of his or her employment.


                                       53
<PAGE>



          The following  table  summarizes  certain  information  concerning the
compensation  paid to the  Company's  five  most  highly  compensated  executive
officers during the last three fiscal years.

<TABLE>

                           SUMMARY COMPENSATION TABLE



<CAPTION>
                                                     Annual Compensation                Long-Term Compensation
                                                     -------------------                ----------------------
Name and Principal Position                 Year Ended                 Salary($)        Bonus    Stock Options (Shares)
- ---------------------------                 ----------                 ---------        -----    ----------------------
<S>                                         <C>                        <C>              <C>               <C>
Paul Segall                                 December 31, 1998          $49,500
   Chairman and Chief Executive Officer     June 30, 1998              $95,500          $50,000           __
                                            June 30, 1997              $90,583           __               __
                                            June 30, 1996              $76,041           __               __

Hal Sternberg
   Vice President of Research               December 31, 1998         $49,500
                                            June 30, 1998              $95,500          $25,000           __
                                            June 30, 1997              $90,583          $25,000           __
                                            June 30, 1996              $76,041           __               __

Harold Waitz                                December 31, 1998          $49,500
   Vice President of Engineering            June 30, 1998              $95,500          __                __
   and Regulatory Affairs                   June 30, 1997              $90,583          $50,000           __
                                            June 30, 1996              $76,041          __                __

Victoria Bellport                           December 31, 1998          $49,500
   Vice President and                       June 30, 1998              $95,500          $25,000           __
    Chief Financial Officer                 June 30, 1997              $90,583          $25,000           __
                                            June 30, 1996              $76,041           __               __

Judith Segall                               December 31, 1998          $49,500
   Vice President and Corporate Secretary   June 30, 1998              $95,500          $25,000           __
                                            June 30, 1997              $90,583          $25,000           __
                                            June 30, 1996              $76,041           __               __
</TABLE>

Insider Participation in Compensation Decisions

         The Board of Directors does not have a standing Compensation Committee.
Instead, the Board of Directors as a whole approves all executive  compensation.
All of the executive officers of the Company serve on the Board of Directors but
do not vote on  matters  pertaining  to their own  personal  compensation.  Paul
Segall  and  Judith  Segall do not vote on matters  pertaining  to each  other's
compensation.


                                       54
<PAGE>


Stock Options

         The following table provides  information with respect to the Company's
five most highly  compensated  executive  officers,  concerning  the exercise of
options during the fiscal year ended December 31, 1998 and  unexercised  options
held as of December 31, 1998

<TABLE>

                Aggregated Options Exercised in Last Fiscal Year,
                        and Fiscal Year-End Option Values

<CAPTION>

                        Number of
                         Shares                                   Number of                       Value of Unexercised
                        Acquired        Value              Unexercised Options at                In-the-Money Options at
                           on         Realized              December 31, 1998                      December 31, 1998         
                                                    -------------------------------------------------------------------------
Name                    Exercise         ($)            Exercisable   Unexercisable           Exercisable   Unexercisable
- -------------------------------------------------------------------------------------------------------------------------
<S>                         <C>         <C>                  <C>            <C>                    <C>            <C>
Paul Segall                 0             0                  0              0                      0              0
Hal Sternberg               0             0                  0              0                      0              0
Harold Waitz                0             0                  0              0                      0              0
Victoria Bellport           0            --                  0              0                      0              0
Judith Segall               0            --                  0              0                      0              0
</TABLE>


Certain Relationships and Related Transactions

       During  the six  months  ended  December  31,  1998,  $6,119  in fees for
consulting  services  was paid to  Jeffrey B.  Nickel,  a member of the Board of
Directors.

     During  September 1995, the Company entered into an agreement for financial
advisory  services with Greenbelt  Corp., a corporation  controlled by Alfred D.
Kingsley and Gary K. Duberstein, who are also shareholders of the Company. Under
this agreement the Company issued to the financial  advisor warrants to purchase
311,276  Common Shares at a price of $1.93 per share,  and the Company agreed to
issue additional  warrants to purchase up to an additional 622,549 Common Shares
at a price equal to the greater of (a) 150% of the average  market  price of the
Common  Shares  during the three  months prior to issuance and (b) $2 per share.
The additional  warrants were issued in equal quarterly  installments over a two
year period, beginning October 15, 1995. The exercise price and number of Common
Shares for which the  warrants  may be exercised  are subject to  adjustment  to
prevent  dilution in the event of a stock split,  combination,  stock  dividend,
reclassification of shares, sale of assets,  merger or similar transaction.  The
number of shares and exercise  prices shown have been adjusted for the Company's
subscription rights  distributions during January 1997 and February 1999 and the
payment of a stock dividend during October 1997. The warrants are exercisable at
the  following  prices:  466,912 at $1.93 per share;  77,818 at $2.35 per share;
77,818 at $9.65 per  share;  77,818 at $9.42  per  share;  77,818 at $10.49  per
share; 77,818 at $15.74 per share; and 77,818 at $13.75 per share.

      Under the agreement, upon the request of Greenbelt Corp., the Company will
file a  registration  statement to register the warrants and  underlying  Common
Shares for sale under the  Securities  Act of 1933,  as amended  (the "Act") and
applicable  state  securities  or "Blue Sky"  laws.  The  Company  will bear the
expenses of  registration,  other than any  underwriting  discounts  that may be
incurred by Greenbelt  Corp. in connection with a sale of the warrants or common
shares.  


                                       55
<PAGE>



The  Company  shall not be  obligated  to file  more than two such  registration
statements, other than registration statements on Form S-3. Greenbelt Corp. also
is entitled to include warrants and common shares in any registration  statement
filed by the Company to register other securities for sale under the Act.

      During  April 1998,  the Company  entered into a  new  financial  advisory
services  agreement  with  Greenbelt  Corp.  The new  agreement  provides for an
initial payment of $90,000 followed by an advisory fee of $15,000 per month that
will be paid quarterly.  The agreement will expire on March 31, 2000, but either
party may terminate the agreement earlier upon 30 days prior written notice.

      The Company has agreed to reimburse  Greenbelt  Corp.  for all  reasonable
out-of-pocket  expenses  incurred in connection with its engagement as financial
advisor,  and  to  indemnify  Greenbelt  Corp.  and  the  officers,  affiliates,
employees, agents, assignees, and controlling person of Greenbelt Corp. from any
liabilities  arising out of or in connection with actions taken on behalf of the
Company under the agreement.


                                       56
<PAGE>



Item 12.   Security Ownership of Certain Beneficial Owners and Management.

      The following table sets forth information as of March 24, 1999 concerning
beneficial  ownership of Common Shares by each shareholder  known by the Company
to be the beneficial owner of 5% or more of the Company's Common Shares, and the
Company's  executive  officers and  directors.  Information  concerning  certain
beneficial owners of more than 5% of the Common Shares is based upon information
disclosed by such owners in their reports on Schedule 13D or Schedule 13G.

                                           Number of         Percent of
                                            Shares            Total
                                          ---------         ----------
Alfred D. Kingsley (1)
Gary K. Duberstein
Greenbelt Corp.
Greenway Partners, L.P.
Greenhouse Partners, L.P.
  277 Park Avenue, 27th Floor
  New York, New York 10017                1,365,642             11.6

Paul and Judith Segall (2)                  745,408              6.9

Harold D. Waitz (3)                         524,166              4.8

Hal Sternberg                               502,043              4.6

Victoria Bellport                           205,978              1.9

Ronald S. Barkin (4)                        192,761              1.7

Jeffrey B. Nickel (5)                        15,000               *

Milton H. Dresner                            13,271               *

All officers and directors
as a group (8 persons)(4)(5)              2,198,627             20.0%
- ---------------------------

*        Less than 1%

(1)    Includes  933,825  Common  Shares  issuable  upon the exercise of certain
       warrants  owned  beneficially  by Greenbelt Corp and 59,730 Common Shares
       owned by Greenbelt Corp. Mr. Kingsley and Mr. Duberstein may be deemed to
       beneficially  own the warrant  shares that Greenbelt  Corp.  beneficially
       owns.  Includes  90,750  Common Shares owned by Greenway  Partners,  L.P.
       Greenhouse  Partners,  L.P. is the general partner of Greenway  Partners,
       L.P. and Mr.  Kingsley  and Mr.  Duberstein  are the general  partners of
       Greenhouse Partners, L.P. Greenhouse Partners, L.P., Mr. Kingsley and Mr.
       Duberstein  may be deemed to  beneficially  own the  Common  Shares  that
       Greenway Partners, L.P. beneficially owns. Includes 270,442 Common Shares
       owned  solely  by Mr.  Kingsley,  as to which  Mr.  Duberstein  disclaims
       beneficial  ownership.  Includes 10,895 Common Shares owned solely by Mr.
       Duberstein, as to which Mr. Kingsley disclaims beneficial ownership.

(2)    Includes 543,245 shares held of record by Paul Segall and 202,163 shares
        held of record by Judith Segall.

(3)    Includes 2,100 shares held for the benefit of Dr. Waitz's minor children.

(4)    Includes 135,000 Common Shares issuable upon the exercise of certain 
        options.

(5)    Includes 15,000 Common Shares issuable upon the exercise of certain 
        options.


                                       57
<PAGE>



      COMPLIANCE WITH SECTION 16(a) OF THE SECURITIES EXCHANGE ACT OF 1934

         Section 16(a) of the  Securities  Exchange Act of 1934, as amended (the
"Exchange  Act"),  requires the Company's  directors and executive  officers and
persons  who own  more  than ten  percent  (10%)  of a  registered  class of the
Company's equity securities to file with the Securities and Exchange  Commission
(the "SEC") initial  reports of ownership and reports of changes in ownership of
Common Shares and other equity  securities of the Company.  Officers,  directors
and greater than ten percent beneficial owners are required by SEC regulation to
furnish the Company with copies of all reports they file under Section 16(a).

         To the Company's knowledge, based solely on its review of the copies of
such reports furnished to the Company and written  representations that no other
reports were required,  all Section 16(a) filing requirements  applicable to its
officers, directors and greater than ten percent beneficial owners were complied
with during the fiscal year ended December 31, 1998.


                                       58
<PAGE>



                                     PART IV


Item 14.   Exhibits, Financial Statement Schedules and Reports on Form 8-K

(a-1) Financial Statements.

The following financial statements of BioTime, Inc. are filed in the Form 10-K:

                                                                         Page
                                                                         ----
Independent Auditors' Report                                              33

Balance Sheets As of December 31, 1998                                    34
and June 30, 1998

Statements of Operations For the Six Months Ended
December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                  35

Statements of Shareholders' Equity For the Six Months
Ended December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                 36-37

Statements of Cash Flows For the Six Months Ended
December 31, 1998, the Three Years in the Period
Ended June 30, 1998 and the Period From Inception
(November 30, 1990) to December 31, 1998                                 38-39

Notes to Financial Statements                                            40-49


                                       59
<PAGE>


(a-3) Exhibits.

Exhibit
Numbers   Description
- -------   -----------

 3.1    Articles of Incorporation, as Amended.+

 3.3    By-Laws, As Amended.#

 4.1    Specimen of Common Share Certificate.+

10.1    Lease Agreement dated July 1, 1994 between the Registrant and Robert and
          Norah Brower, relating to principal executive offices of the 
          Registrant.*

10.2    Employment Agreement dated June 1, 1996 between the Company and 
          Paul Segall.++

10.3    Employment Agreement dated June 1, 1996 between the Company and 
          Hal Sternberg.++

10.4    Employment Agreement dated June 1, 1996 between the Company and 
          Harold Waitz.++

10.5    Employment Agreement dated June 1, 1996 between the Company and 
          Judith Segall.++

10.6    Employment Agreement dated June 1, 1996 between the Company and
          Victoria Bellport.++

10.7    Intellectual Property Agreement between the Company and Paul Segall.+

10.8    Intellectual Property Agreement between the Company and Hal Sternberg.+

10.9    Intellectual Property Agreement between the Company and Harold Waitz.+

10.10   Intellectual Property Agreement between the Company and Judith Segall.+

10.11   Intellectual Property Agreement between the Company and 
          Victoria Bellport.+

10.12   Agreement between CMSI and BioTime Officers Releasing Employment 
          Agreements, Selling Shares, and Transferring Non-Exclusive License.+

10.13   Agreement for Trans Time, Inc. to Exchange CMSI Common Stock for 
          BioTime, Inc. Common Shares.+

10.14   1992 Stock Option Plan, as amended.##

10.15   Employment Agreement dated April 1, 1997 between the Company and 
          Ronald S. Barkin.^


                                       60
<PAGE>



10.16   Intellectual Property Agreement between the Company and
          Ronald S. Barkin.^

10.17   Addenda to Lease Agreement between the Company and Donn Logan.**

23.1    Consent of Deloitte & Touche LLP**

27      Financial Data Schedule**

+Incorporated  by reference to the Company's Form 10-K for the fiscal year ended
June 30, 1998.

+ Incorporated by reference to  Registration  Statement on Form S-1, File Number
33-44549 filed with the Securities and Exchange Commission on December 18, 1991,
and Amendment No. 1 and  Amendment No. 2 thereto filed with the  Securities  and
Exchange Commission on February 6, 1992 and March 7, 1992, respectively.

# Incorporated by reference to  Registration  Statement on Form S-1, File Number
33-48717 and  Post-Effective  Amendment No. 1 thereto filed with the  Securities
and Exchange Commission on June 22, 1992, and August 27, 1992, respectively.

* Incorporated by reference to the Company's Form 10-K for the fiscal year ended
June 30, 1994.

++  Incorporated  by  reference to the  Company's  Form 10-K for the fiscal year
ended June 30, 1996.

^  Incorporated  by reference to the  Company's  Form 10-Q for the quarter ended
March 31, 1997.

## Incorporated by reference to Registration  Statement on Form S-8, File Number
333-30603 filed with the Securities and Exchange Commission on July 2, 1997.

** Filed herewith.


                                       61
<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 on Form 10-K to
be signed on its behalf by the  undersigned,  thereunto  duly  authorized on the
30th day of March 1999.

                             BIOTIME, INC.


                             By:/s/Paul E. Segall
                                ------------------
                                Paul E. Segall, Ph.D.
                                Chairman and Chief Executive
                                Officer (Principal executive Officer)
<TABLE>

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

/s/Paul E. Segall
- ---------------------
Paul E. Segall, Ph.D.               Chairman, Chief Executive Officer and               March 30, 1999
                                    Director (Principal Executive Officer)

/s/Ronald S. Barkin
- ---------------------
Ronald S. Barkin                    President and Director                              March 30, 1999


/s/Harold D. Waitz
- ---------------------
Harold D. Waitz, Ph.D.              Vice President and Director                         March 30, 1999

/s/Hal Sternberg
- ---------------------
Hal Sternberg, Ph.D.                Vice President and Director                         March 30, 1999


/s/Victoria Bellport
- ---------------------
Victoria Bellport                   Chief Financial Officer and                         March 30, 1999
                                    Director (Principal Financial and
                                    Accounting Officer)
/s/Judith Segall
- ---------------------
Judith Segall                       Vice President, Corporate Secretary                 March 30, 1999
                                    and Director

- ---------------------
Jeffrey B. Nickel                   Director                                            March 30, 1999


- ---------------------
Milton H. Dresner                   Director                                            March 30, 1999

</TABLE>
                                       62
<PAGE>


Exhibit Index

Exhibit
Numbers   Description
- -------   ------------
 3.1     Articles of Incorporation, as Amended.+

 3.3     By-Laws, As Amended.#

 4.1     Specimen of Common Share Certificate.+

10.1     Lease Agreement dated July 1, 1994 between the Registrant and Robert 
           and Norah Brower, relating to principal executive offices of the
           of the Registrant.*

10.2     Employment Agreement dated June 1, 1996 between the Company and 
           Paul Segall.++

10.3     Employment Agreement dated June 1, 1996 between the Company and 
           Hal Sternberg.++

10.4     Employment Agreement dated June 1, 1996 between the Company and 
           Harold Waitz.++

10.5     Employment Agreement dated June 1, 1996 between the Company and
           Judith Segall.++

10.6     Employment Agreement dated June 1, 1996 between the Company and
           Victoria Bellport.++

10.7     Intellectual Property Agreement between the Company and Paul Segall.+

10.8     Intellectual Property Agreement between the Company and Hal Sternberg.+

10.9     Intellectual Property Agreement between the Company and Harold Waitz.+

10.10    Intellectual Property Agreement between the Company and Judith Segall.+

10.11    Intellectual Property Agreement between the Company and
           Victoria Bellport.+

10.12    Agreement between CMSI and BioTime Officers Releasing Employment 
           Agreements, Selling Shares, and Transferring Non-Exclusive License.+

10.13    Agreement for Trans Time, Inc. to Exchange CMSI Common Stock for 
           BioTime, Inc. Common Shares.+

10.14    1992 Stock Option Plan, as amended.##

10.15    Employment Agreement dated April 1, 1997 between the Company and
           Ronald S. Barkin.^

10.16    Intellectual Property Agreement between the Company and 
           Ronald S. Barkin.^

10.17    Addenda to Lease Agreement between the Company and Donn Logan.**

23.1     Consent of Deloitte & Touche LLP**

27       Financial Data Schedule**


                                       63
<PAGE>



+Incorporated  by reference to the Company's Form 10-K for the fiscal year ended
June 30, 1998.

+ Incorporated by reference to  Registration  Statement on Form S-1, File Number
33-44549 filed with the Securities and Exchange Commission on December 18, 1991,
and Amendment No. 1 and  Amendment No. 2 thereto filed with the  Securities  and
Exchange Commission on February 6, 1992 and March 7, 1992, respectively.

# Incorporated by reference to  Registration  Statement on Form S-1, File Number
33-48717 and  Post-Effective  Amendment No. 1 thereto filed with the  Securities
and Exchange Commission on June 22, 1992, and August 27, 1992, respectively.

* Incorporated by reference to the Company's Form 10-K for the fiscal year ended
June 30, 1994.

++  Incorporated  by  reference to the  Company's  Form 10-K for the fiscal year
ended June 30, 1996.

^  Incorporated  by reference to the  Company's  Form 10-Q for the quarter ended
March 31, 1997.

## Incorporated by reference to Registration  Statement on Form S-8, File Number
333-30603 filed with the Securities and Exchange Commission on July 2, 1997.

** Filed herewith.

                                       64


                             ADDENDUM NO. 3 TO LEASE

This is an Addendum to the Lease dated June 1, 1993 in which  BioTime,  Inc.,  a
California  corporation,  is referred to as "Lessee." The following  changes are
hereby incorporated. In the event of a conflict of terms, those of this Addendum
shall prevail.

1. The Premises are hereby expanded to include the entire building at 935 Pardee
Street, Berkeley, California being approximately 8890 square feet on two levels,
and its adjacent parking area. The additional  space,  comprising  approximately
3,000 square feet, is referred to as the "Expansion Space."

2. Regarding  Paragraph 1: The term shall be Five (5) years  commencing April 1,
1999.

3.  Regarding  Paragraph 2: Rent shall be Five  Thousand  Five  Hundred  Dollars
($5,500.00)  per month prior to  Lessor's  delivery  of the  Expansion  Space to
Lessee.  Upon Lessee's possession of the Expansion Space, rent shall increase to
Ten Thousand  Dollars  ($10,000.00)  per month for the entire  premises.  If the
Expansion  Space is  delivered  to Lessee on a day other than the first day of a
calendar  month,  the rent shall be prorated at the rate of  Thirty-Seven  Cents
($0.037) per square foot per day.

4.  Regarding  Paragraph  14:  Lessee  shall pay for all  utilities  and  refuse
collection.

5. Regarding  Paragraph 29: Rental for any holding over shall be Eleven Thousand
Dollars ($11,000.00) per month as stated in said paragraph.

6.  Regarding  Paragraph  33: On each  anniversary  of the lease,  rent shall be
increased  according  to the  increase in the  Consumer  Price Index  during the
previous year,  except that no single  increase shall be less than three percent
(3%) nor greater than seven percent (7%).  The Consumer Price Index shall be the
consumer  price  index  (All Urban  Consumers,  base year  1982-84=100)  for San
Francisco  Oakland - San Jose CMSA published by the United States  Department of
Labor, Bureau of Labor Statistics.

7. Regarding  Paragraph 34: Lessee shall have one (1) option to extend the lease
for an  additional  three (3) years on the same terms and  conditions  stated in
said paragraph.

8. Possession:  Lessor shall deliver possession of the Expansion Space to Lessee
June 30,  1999 or on such  earlier  date on which the  Expansion  Space  becomes
vacant and meets the conditions of Paragraph 9C of this Addendum.

9. Condition of Premises at  Commencement:  As-is  excepting the following which
shall be the Lessor's obligation:


                                       1
<PAGE>


A.  Lessor  shall  inspect  wood  floors  on the  second  floor and  repair  and
strengthen as required.

B.  Lessor shall modify shed to provide for its use as a parking space.

C.  The  Expansion  Space shall be in good  condition  and  repair,  broom swept
         clean and free of all personal property, equipment, furniture and trade
         fixtures of the prior tenant.

10. Early  Termination:  At any time after the  expiration  of the eighteen (18)
month of the new lease  term,  Lessee may  terminate  the lease by so  notifying
Lessor in writing no less than six (6) months prior to the intended  termination
date.


/s/ Ronald S. Barkin                                         2/8/99
- -----------------------------------                 ---------------------------
 for BioTime, Inc., Lessee                                    Date


/s/ Donn Logan                                               2/8/99
- ------------------------------------                ---------------------------
Lessor                                                        Date



                                                     EXHIBIT 23.1


INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in Registration Statement Nos. 
33-56766, 33-88968 and 333-30603 of BioTime, Inc. on Form S-8 of our report 
dated February 5, 1999 (which expresses an unqualified opinion and includes an
explanatory paragraph related to the development stage of the Company's 
operations), appearing in the Annual Report on Form 10-K of BioTime, Inc. for
the year ended December 31, 1998.

We also consent to the reference to us under the heading "Selected Financial
Data" in such Form 10-K.


DELOITTE & TOUCHE
March 29, 1999
San Francisco, CA


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