Ralph M. Steinman

Ralph M. Steinman (born January 14, 1943, Montreal, Canada—died September 30, 2011, New York, New York, U.S.) was a Canadian immunologist and cell biologist who shared the 2011 Nobel Prize for Physiology or Medicine (with American immunologist Bruce A. Beutler and French immunologist Jules A. Hoffmann) for his codiscovery with American cell biologist Zanvil A. Cohn of the dendritic cell (a type of immune cell) and his elucidation of its role in adaptive immunity. Steinman’s...