STAMFORD, Conn.--(BUSINESS WIRE)--Sept. 23, 2005--University scientists working under a research program sponsored by Marc Pharmaceuticals, Inc. (OTC:MPMA)(OTC:MPMAW) (OTC:MPMAZ), recently completed a 17-day study on laboratory animals. The study results showed that one of Marc’s water soluble drug candidates (a Betulinol derivative) slowed prostate tumor growth in mice. Betulinol is a naturally occurring compound that is isolated from the outer layer of the bark of the white birch tree. Betulinol derivatives are formed by replacing a specific atom or group of atoms within a betulinol molecule.