Born 28 May 1942.
Stanley Ben Prusiner is an American neurologist whose discovery (1982) of the prions as a new biological principle of infection won him the 1997 Nobel Prize for Physiology or Medicine. Prions are novel infectious agents differing from all other known pathogenic agents. They are simple proteins that are much smaller than viruses. They are unique since they lack a genome. All other known infectious agents contain genetic material.