Irving Weissman
Videos 2
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Health, ScienceAir Date 10/06/2003
Biologist Irving Weissman explains what stem cells are and the political and ethical issues around harvesting them. -
Entertainment, Health, ScienceAir Date 10/06/2003
Stanford biologist Irving Weissman on stem cell research; the directors and cast of "Intolerable Cruelty."