Ref # 04-0977w

DATE: Thursday, June 10, 2004

TO: Marcin Klapczynski
University of Illinois at Chicago
Department of Physiology and Biophysics
835 S. Wolcott Ave.
Chicago, IL 60612

FROM: Elizabeth Sandler, Rights and Permissions

RE: Your request for permission dated 05/28/04

Regarding your request, we are pleased to grant you non-exclusive, non-transferable permission, but limited to World Wide Web format only, and provided that you meet the criteria below. Such permission is for one-time use and therefore does not include permission for print products, ancillaries, customized forms, any other electronic forms, translations, or promotional pieces. Permission is granted for your requested use only. Any additional uses other than the single use specified in your request including appearances on other websites or in other unspecified contexts on the same website are strictly prohibited. We must be contacted for permission each time such use is planned. This permission does not apply to figures / artwork that are credited to non-AAAS sources. This permission does not include the right to modify AAAS material.

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Fig.s 1,2,3,4 from Clarke et al., SCIENCE 288:1660-3 (2000)

Przyszlosc Komorek Macierzystych w Medycynie (The Future of Stem Cells in Medicine) on http://www.racjonalista.pl