Exhibit 99.1
                                                                   ------------

GUENTER H. JAENSCH, PHD
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16065 Bristol Isle Way
Delray Beach, FL  33446
Phone 561-496-2744
Fax   561-496-2746
ghjae@adelphia.net

September 27, 2006

Eric Henderson, PhD
Bioforce nanosciences Holdings, Inc.
Chairman of the Board
1615 Golden Aspen Drive
Ames, iowa  50010





Dear Eric:

After long and careful  consideration  I have decided to ask for my  resignation
from the Board of  Bioforce,  effective  immediately.  In  contrast to the other
board  members,  I have no vested  interest  in the  company,  and I feel that I
cannot contribute enough; my modest proposals did not find much response either.
Also,  already  chairing the Audit Committees of two other public  companies,  I
think that I should avoid adding any more exposure vs. the SEC,  particularly as
I have not even been informed  about the latest  filings of Bioforce even though
elected to chair the Audit Committee at the June 2006 Board Meeting.

Please  feel free to contact me if you see any  problems  in how to  disclose my
resignation or to deal with possible other formal  matters.  In any case, I wish
you personally and the company all the best for a wonderful  future - I hope you
will understand, however, that I rather want to focus on my other obligations.

Best regards,

/s/ Guenter
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