Irving L. Weissman, M.D., is the Director of the Stanford Institute for Stem Cell Biology and Regenerative Medicine, Director of the Stanford Cancer Center and Director of the Stanford Ludwig Center for Stem Cell Research. Dr. Weissman was a member of the founding Scientific Advisory Boards of Amgen (1981-1989), DNAX (1981-1992), and T-Cell Sciences (1988-1992). He co-founded SyStemix in 1988, StemCells in 1996, and Celtrans (now Cellerant), the successor to SyStemix, in 2001. He is a...