THERMOGENESIS CORP.

                              EMPLOYMENT AGREEMENT
                                       for
                                Philip H. Coelho


         THERMOGENESIS CORP. ("Employer"), and Philip H. Coelho ("Employee"),
agree as follows:

1.  Employment.  Employer  employs Employee and Employee accepts employment with
Employer  on the terms and  conditions  set forth in this  Employment  Agreement
("Agreement").

2.  Position;  Scope of  Employment.  Employee  shall have the position of Chief
Executive  Officer for  Employer,  and shall have the duties and  authority  set
forth  below,  and as detailed on the position  description  attached as Exhibit
"A",  which duties and  authority may be modified from time to time by Employer.
As Chief  Executive  Officer,  Employee shall report  directly to the Employer's
Board of Directors.

         2.1.  Entire Time and Effort.  Employee  shall devote  Employee's  full
working time, attention,  abilities, skill, labor and efforts to the performance
of his  employment.  Employee shall not,  directly or indirectly,  alone or as a
member of a partnership or other organizational  entity, or as an officer of any
corporation  (other than any which are owned by or affiliated with Employer) (i)
be  substantially  engaged in or concerned with any other  commercial  duties or
pursuits,  (ii) engage in any other  business  activity that will interfere with
the performance of Employee's duties under this Agreement, except with the prior
written  consent of Employer,  or (iii) join the board of directors of any other
corporation; provided, however, that Employee may join the board of directors of
no more than two unaffiliated  corporations so long as such corporations are not
competitive  to  the  current  or  future   operations  of  Employer  and  those
corporations  offer  some  synergistic   prospects  or  other  support  for  the
Employer's goals.

         2.2. Rules and Regulations.  Employee agrees to observe and comply with
Employer's  rules and  regulations as provided by Employer and as may be amended
from time to time by  Employer  and will carry out and perform  faithfully  such
orders, directions and policies of Employer. To the extent any provision of this
Agreement is contrary to an Employer rule or regulation,  as such may be amended
from time to time, the terms of this Agreement shall control.



2



         2.3.  Limitations  Upon Authority to Bind Employer.  Employee shall not
engage in any of the following  actions on behalf of Employer  without the prior
approval of Employer:  (i) borrow or obtain  credit in any amount or execute any
guaranty,  except for items  purchased  from vendors in the  ordinary  course of
Employer's  operations;  (ii) expend  funds for capital  equipment  in excess of
expenditures expressly budgeted by Employer, if applicable,  or in the event not
budgeted,  not to exceed the amounts set forth in subparagraph (iii); (iii) sell
or transfer capital assets exceeding One Hundred thousand dollars  ($100,000) in
market value in any single  transaction  or exceeding Two Hundred Fifty Thousand
Dollars ($250,000) in the aggregate during any one fiscal year; (iv) execute any
lease for real or personal  property;  or (v) exercise any  authority or control
over the management of any employee  welfare or pension  benefit plan maintained
by Employer or over the disposition of the assets of any such plan.

3.  Term.  The term of this  Agreement  shall be for a period  of three (3)
years which  shall  commence  on July 1, 1999 and end on June 30,  2002;  unless
terminated earlier as provided below in section 5.

4.  Compensation.  Employer shall pay to or provide  compensation to Employee as
set forth in this  section 4. All  compensation  of every  description  shall be
subject to the customary  withholding tax and other employment taxes as required
with respect to compensation paid to an employee.

         4.1.  Base  Salary.  Employer  shall  pay  Employee  a base  salary  of
One-Hundred  Seventy  Nine  Thousand  Six Hundred  dollars  ($179,600)  per year
commencing  on July 1, 1999 ("Base  Salary").  Employee's  Base Salary  shall be
payable  in  accordance  with  Employer's  regular  pay  schedule,  but not less
frequently than twice per month.

         4.2.  Annual Review.  On the date of the  Employer's  annual meeting of
shareholders,  or within  thirty (30) days  thereafter,  and on each  subsequent
annual meeting of shareholders during the term of this Agreement, Employer shall
review the  previous  year's  performance  of Employee for the purpose of making
reasonable increases to Employee's Base Salary; provided that Employer shall not
be required to increase Employee's Base Salary, but may do so at its discretion.

         4.3.  Cash  Bonuses.  In addition to the Base  Salary  provided  for in
sections 4.1 and 4.2,  Employee is eligible to receive bonuses based on Employer
performance and Employee's attainment of objectives periodically  established by
Employer. Annual bonuses to be provided to Employee shall not exceed thirty-five
percent (35%) of Employee's Base Salary then in effect in any given year.

         4.4.  Stock Option Grants.  In addition to Base Salary  provided for in
sections 4.1 and 4.2,  Employee is eligible to receive,  in addition to any cash
bonus  provided  for in  section  4.3,  an  award  of  stock  options  as may be
determined from time to time by Employer's Compensation Committee which consists
of disinterested  directors who administer  Employer's Amended 1994 Stock Option
Plan and Employers 1998 Employee Equity Incentive Plan.

         4.5.  Vacation and Sick Leave.  Employee shall be entitled to accrue up
to four (4) weeks vacation annually;  provided,  however, that vacation time may
not accrue  beyond two weeks of accrued and unused time.  Vacation pay shall not
accrue  beyond two (2) weeks at any given  time.  Employee  shall be entitled to
sick leave in accordance with Employer's sick leave policy, as amended from time
to time. At the end of each anniversary of this Agreement,  subject to the limit
on two weeks accrued and unused  vacation,  all such unused and accrued vacation
time shall be paid in cash.

         4.6.  Other  Fringe  Benefits.  Employee  shall  participate  in all of
Employer's  fringe  benefit  programs  in  substantially  the same manner and to
substantially the same extent as other similar employees of Employer,  excluding
only those benefits expressly modified by the terms hereof.

3

         4.7. Expenses. Employee shall be reimbursed for his reasonable business
expenses; subject to the presentation of evidence of such expenses in accordance
with established policies adopted by Employer from time to time.

         4.8.  Compensation From Other Sources. Any proceeds that Employee shall
receive by virtue of qualifying for disability  insurance,  disability benefits,
or health or accident insurance shall belong to Employee.  Employee shall not be
paid Base Salary in any period in which he receives  benefits as determined  and
paid under Employer's  long-term  disability  policy.  Benefits paid to Employee
under Employer's  short-term disability policy shall reduce, by the same amount,
Base Salary payable to Employee for such period.

5. Early  Termination.  Employee's  employment  with  Employer may be terminated
prior to the expiration of the term of this Agreement, upon any of the following
events:  (i) the mutual agreement of Employer and Employee in writing;  (ii) the
disability of Employee,  which shall,  for the purposes of this Agreement,  mean
Employee's inability, for a period exceeding three (3) months as determined by a
qualified physician,  and which qualifies Employee for benefits under Employer's
long-term  disability policy, to perform in the usual manner the material duties
usually and customarily  pertaining to Employee's  long-term  employment;  (iii)
Employee's  death;  (iv)  notice of  termination  by  Employer  for  cause;  (v)
Employer's cessation of business; (vi) written notice of termination by Employer
without cause upon fourteen (14) days'  notice,  subject to the  provisions  for
compensation upon early termination in section 5.3(b); or (vii) upon a Change in
Control  (as  defined   below)  of  Employer   (as  defined  in  and  under  the
circumstances described in section 5.4).

         5.1.  Definition of Cause.  For purposes of this Agreement,  any of the
following shall  constitute  cause: (i) willful or habitual breach of Employee's
duties;  (ii) fraud or  intentional  material  misrepresentation  by Employee to
Employer or any others; (iii) theft or conversion by Employee; (iv) unauthorized
disclosure  or  other  use  of  Employer's  trade  secrets,  customer  lists  or
confidential  information;  (v) habitual misuse of alcohol or any  nonprescribed
drug or intoxicant;  or (vi) willful violation of any other standards of conduct
as set forth in Employer's employee manual.

         5.2.     Damages.  If Employer  terminates  Employee for cause,
Employer  shall be entitled to damages and all other  remedies to which Employer
may otherwise be entitled.

         5.3.     Compensation Upon Early Termination.

               (a)  If Employee resigns during the term of this Agreement, or if
                    this Agreement is terminated by Employer for cause, Employee
                    shall be  entitled to all accrued but unpaid Base Salary and
                    vacation pay accrued  through the date of delivery of notice
                    of termination.

               (b)  If Employee is terminated without cause,  Employer shall pay
                    to Employee as liquidated damages and in lieu of any and all
                    other  claims which  Employee may have against  Employer the
                    greater of (i) six (6) months of Employee's salary excluding
                    any amounts  for  benefits;  or (ii) an amount  equal to the
                    then current per month Base Salary  multiplied by the number
                    of calendar months  remaining of the term of this Agreement.
                    Employer's payment pursuant to this subparagraph shall fully
                    and completely discharge any and all obligations of Employer
                    to Employee  arising out of or related to this Agreement and
                    shall constitute  liquidated  damages in lieu of any and all
                    claims  which   Employee  may  have  against   Employer  not
                    including  any  obligation  under the workers'  compensation
                    laws including Employer's liability provisions.


4


         Initials:         Employee  _________       Employer   _________

               (c)  If Employee's  employment is terminated as a result of death
                    or total  disability,  Employee shall be entitled to accrued
                    but unpaid Base Salary to date of  termination.  The date of
                    termination  shall be  deemed  the date of death  or, in the
                    event of disability,  the date Employee  qualified for total
                    disability  payments under Employer's  long-term  disability
                    plan.

               (d)  If  Employee's  employment  is  terminated  as a result of a
                    Change in Control of Employer, Employee shall be entitled to
                    a lump-sum  payment  equal to three  times  Employee's  Base
                    Salary at the time.  A "Change  in  Control"  shall  mean an
                    event  involving  one  transaction  or a  related  series of
                    transactions  in  which  one of the  following  occurs:  (i)
                    Employer  issues   securities   equal  to  33%  or  more  of
                    Employer's   issued  and  outstanding   voting   securities,
                    determined  as a  single  class,  to any  individual,  firm,
                    partnership or other entity,  including a "group" within the
                    meaning of section  13(d)(3) of the Securities  Exchange Act
                    of 1934;  (ii) Employer  issues  securities  equal to 33% or
                    more of the issued and outstanding  common stock of Employer
                    in connection with a merger, consolidation or other business
                    combination; (iii) Employer is acquired in a merger or other
                    business  combination  transaction  in which Employer is not
                    the surviving  company;  or (iv) all or substantially all of
                    Employer's assets are sold or transferred.

               (e)  Except as  expressly  provided in paragraph  (d) above,  all
                    compensation  described in this section 5.3 shall be due and
                    payable in installments at least bi-weekly or at the time of
                    the  delivery  of  notice  of  termination,   at  Employer's
                    discretion.

6. Confidential Information of Customers of Employer. Employee during the course
of his duties will be handling financial, accounting, statistical, marketing and
personnel  information  of  customers  of  Employer.  All  such  information  is
confidential  and shall not be  disclosed,  directly or  indirectly,  or used by
Employee in any way,  either  during the term of this  Agreement  or at any time
thereafter  except as  required  in the  course of  Employee's  employment  with
Employer.

7. Unfair  Competition.  During the term of this Agreement,  Employee shall not,
directly or indirectly,  whether as a partner, employee, creditor,  shareholder,
or otherwise,  promote, participate, or engage in any activity or other business
which is competitive in any way with Employer's business.  The obligation of the
Employee not to compete with the Employer  shall not prohibit the Employee  from
owning or purchasing  any corporate  securities  that are regularly  traded on a
recognized stock exchange or on over-the-counter market. In order to protect the
trade secrets of Employer,  after the term, or upon earlier  termination of this
Agreement,  the  Employee  shall  not,  directly  or  indirectly,  either  as an
employee,  employer,   consultants,   agent,  principal,  partner,  stockholder,
corporate officer, director, or any other individual or representative capacity,


5


engage or  participate  in any business that is in direct  competition  with the
business  of the  Employer  for a period  of one (1)  year  from the date of the
expiration of this Agreement in the areas related to blood processing  equipment
or procedures.

8. Trade Secrets.  Employee shall not disclose to any others, or take or use for
Employee's  own  purposes or  purposes  of any  others,  during the term of this
Agreement or at any time thereafter,  any of Employer's trade secrets, including
without limitation,  confidential information, customer lists, computer programs
or computer software of Employer.  Employee agrees that these restrictions shall
also  apply to (i)  trade  secrets  belonging  to third  parties  in  Employer's
possession and (ii) trade secrets conceived, originated, discovered or developed
by Employee during the term of this Agreement. Information of Employer shall not
be  considered  a trade  secret if it is lawfully  known  outside of Employer by
anyone who does not have a duty to keep such information confidential.

         8.1  Inventions;  Ownership  Rights.  Employee  agrees  that all ideas,
techniques,  inventions, systems, formulas, discoveries,  technical information,
programs,   prototypes  and  similar  developments  ("Developments")  developed,
created,  discovered,  made, written or obtained by Employee in the course of or
as a result, directly or indirectly, of performance of his duties hereunder, and
all related industrial  property,  copyrights,  patent rights, trade secrets and
other forms of protection thereof, shall be and remain the property of Employer.
Employee  agrees  to  execute  or  cause to be  executed  such  assignments  and
applications, registrations and other documents and to take such other action as
may be  requested  by Employer  to enable  Employer to protect its rights to any
such Developments. If Employer requires Employee's assistance under this section
8.1 after  termination of this Agreement,  Employee shall be compensated for his
time actually spent in providing such assistance at an hourly rate equivalent to
the prevailing rate for such services and as agreed upon by the parties.

9. Arbitration.  Any disputes regarding the rights or obligations of the parties
under this Agreement  shall be conclusively  determined by binding  arbitration.
Any  controversy  or claim arising out of or relating to this  contract,  or the
breach  thereof,  shall  be  settled  by  arbitration  in  accordance  with  the
Commercial  Arbitration  Rules  of the  American  Arbitration  Association,  and
judgment  upon the award  rendered  by the  arbitrator(s)  may be entered in any
court having jurisdiction thereof.

10.  Actions  Contrary to Law.  Nothing  contained  in this  Agreement  shall be
construed  to require the  commission  of any act  contrary to law, and whenever
there is any conflict  between any provision of this  Agreement and any statute,
law, ordinance, or regulation, contrary to which the parties have no legal right
to contract, then the latter shall prevail; but in such event, the provisions of
this  Agreement so affected  shall be  curtailed  and limited only to the extent
necessary to bring it within legal requirements.

11.      Miscellaneous.

         11.1.  Notices.  All  notices  and  demands  of  every  kind  shall  be
personally delivered or sent by first class mail to the parties at the addresses
appearing  below or at such other  addresses  as either  party may  designate in
writing, delivered or mailed in accordance with the terms of this Agreement. Any
such notice or demand shall be effective  immediately upon personal  delivery or
three (3) days after deposit in the United States mail, as the case may be.


6




                EMPLOYER:                 THERMOGENESIS CORP.
                                          3146 Gold Camp Drive
                                          Rancho Cordova, California 95670

                EMPLOYEE:                 Philip H. Coelho
                                          121 Giotto Way
                                          El Dorado Hills, CA 95762

        11.2.  Attorneys'  Fees;  Prejudgment  Interest.  If the  services of an
attorney are required by any party to secure the performance hereof or otherwise
upon the  breach  or  default  of  another  party to this  Agreement,  or if any
judicial  remedy or  arbitration  is  necessary  to  enforce  or  interpret  any
provision  of this  Agreement or the rights and duties of any person in relation
thereto,  the prevailing party shall be entitled to reasonable  attorneys' fees,
costs and other  expenses,  in addition to any other  relief to which such party
may be entitled.  Any award of damages following  judicial remedy or arbitration
as a result  of the  breach of this  Agreement  or any of its  provisions  shall
include  an award of  prejudgment  interest  from the date of the  breach at the
maximum amount of interest allowed by law.

        11.3. Choice of Law,  Jurisdiction,  Venue. This Agreement is drafted to
be effective in the State of  California,  and shall be construed in  accordance
with California law. The exclusive jurisdiction and venue of any legal action by
either party under this Agreement shall be the County of Sacramento, California.

        11.4. Amendment,  Waiver. No amendment or variation of the terms of this
Agreement  shall be valid  unless  made in writing  and signed by  Employee  and
Employer.  A waiver  of any term or  condition  of this  Agreement  shall not be
construed  as a general  waiver by  Employer.  Failure  of  either  Employer  or
Employee to enforce any  provision or  provisions  of this  Agreement  shall not
waive  any  enforcement  of any  continuing  breach  of the  same  provision  or
provisions or any breach of any provision or provisions of this Agreement.

        11.5. Assignment; Succession. It is hereby agreed that Employee's rights
and  obligations  under this  Agreement  are personal and not  assignable.  This
Agreement contains the entire agreement and understanding between the parties to
it and shall be  binding  on and inure to the  benefit  of the  heirs,  personal
representatives, successors and assigns of the parties hereto.

        11.6.  Independent  Covenants.  All provisions  herein concerning unfair
competition and confidentiality  shall be deemed independent covenants and shall
be enforceable  without  regard to any breach by Employer  unless such breach by
Employer is willful and egregious.

        11.7. Entire Agreement.  This document  constitutes the entire agreement
between the parties, all oral agreements being merged herein, and supersedes all
prior representations.  There are no representations,  agreements, arrangements,
or understandings, oral or written, between or among the parties relating to the
subject matter of this Agreement that are not fully expressed herein.


7


        11.8.  Severability.  If any  provision  of this  Agreement is held by a
court of competent jurisdiction to be invalid or unenforceable, the remainder of
the  Agreement  which can be given effect  without the invalid  provision  shall
continue  in  full  force  and  effect  and  shall  in no  way  be  impaired  or
invalidated.

        11.9.   Captions.  All captions of sections and  paragraphs in this
Agreement are for reference only and shall not be considered in construing  this
Agreement.



EMPLOYER:                THERMOGENESIS CORP.



                       By: _______________________________________________
                          (James H. Godsey, President & Chief Operating
                           Officer)



                       By:_______________________________________________
                          (David Howell, Chairman Compensation Committee)



EMPLOYEE:             By:______________________________________________
                         (Philip H. Coelho)


8



                                   EXHIBIT "A"

                          EMPLOYEE POSITION DESCRIPTION