SCOTTSDALE, Ariz.--(BUSINESS WIRE)--Aug. 18, 2006--Medistem Laboratories, Inc. (OTCBB:MDSM) (FWB:S2U), committed to the ethical development of next-generation medical therapies from non-controversial adult stem cell sources, announces that Dr. Clem Persaud, a former Fellow at the World Health Organization and microbiologist, is the latest to join its medical advisory board.