SCOTTSDALE, Ariz.--(BUSINESS WIRE)--Aug. 10, 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, has announced that its affiliate, the Institute for Cellular Medicine (ICM), has received approval from the Costa Rican Health Ministry to begin operations of its adult stem cell bank and clinic.