1
                                                                      Exhibit 24


                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







   /s/ James Colker   (SEAL)
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James Colker, Director



   2


                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







    /s/ Robert E. Hannan  (SEAL)
- --------------------------
Robert E. Hannan, Director



   3



                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







       /s/ Donald A. Guthrie      (SEAL)
- ----------------------------------
Donald A. Guthrie, Ph.D., Director




   4



                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







        /s/ Jesse M. Jaynes     (SEAL)
- --------------------------------
Jesse M. Jaynes, Ph.D., Director

   5






                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







    /s/ John Bridwell  (SEAL)
- -----------------------
John Bridwell, Director


   6






                                POWER OF ATTORNEY



         KNOW BY ALL MEN BY THESE PRESENTS, that the undersigned director of
Demegen, Inc., a Colorado Corporation, does make, constitute and appoint
RICHARD D. EKSTROM, with full power and authority his true and lawful
attorney-in-fact and agent, for him and his name, place and stead in any and all
capacities, to sign the Initial Report of Demegen, Inc. on Form 10/Amendment
No. 3 for the period ended September 30, 1998, and to file such Initial Report,
so signed, with all exhibits thereto, with the Securities and Exchange
Commission, hereby further granting unto said attorney-in-fact full power and
authority to do and perform any and all acts and things requisite and necessary
to be done in and about the premises as fully to all intents and purposes as he
might or could do in person; the undersigned hereby ratifies and confirms all
that said attorney and agent, shall do or cause to be done by virtue hereof.


         IN WITNESS WHEREOF, THE UNDERSIGNED HAS HEREUNTO SET HIS HAND AND SEAL
THIS 2nd day of August, 1999.







      /s/ Konrad M. Weis       (SEAL)
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Konrad M. Weis, Ph.D., Director