Dr. Ralph M. Steinman, 64, of Rockefeller University, the scientist who first identified dendritic cells is awarded a Lasker prize. <A HREF="http://www.nytimes.com/2007/09/16/health/16lasker.html?hp" target="_blank">http://www.nytimes.com/2007/09/16/health/16lasker.html?hp</A>