Wikipedia
PharmaSat
PharmaSat was a nanosatellite developed by NASA Ames Research Center which measured the influence of microgravity upon yeast resistance to an antifungal agent. As a follow on to the GeneSat-1 mission, the Ames Small Spacecraft Division conducted the PharmaSat mission in collaboration with industry and local universities.
PharmaSat was the first nanosatellite to implement biological science guided by its Principal Investigator. The mission was designed to aid the development of medicines or techniques to enable long-term manned space travel and habitation.