Irving Lerner "Irv" Weissman M.D. is a Professor of Pathology and Developmental Biology at Stanford University where he is the Director of the Stanford Institute of Stem Cell Biology and Regenerative Medicine along with Michael Longaker. Wikipedia*
On the C-SPAN Networks:
Irving Weissman has two videos in the C-SPAN Video Library; the first appearance was a 2001 Forum as a Chair for the Scien.&Med. Aspects of Human Cloning of the National Academy of Sciences. The year with the highest average number of views per program was 2004 with an average of 297 views per program.