Greengard, Paul, 1925-, American neuroscientist, b. New York, N.Y., Ph.D. The Johns Hopkins 1953. Greengard was on the staff at Geigy Research Laboratories (1959-67) and a professor at the Albert Einstein College of Medicine (1961-70) and Yale (1968-83). In 1983 he became a professor at Rockefeller Univ. Greengard shared the 2000 Nobel Prize in Physiology or Medicine with Arvid
Carlsson and Eric
Kandel for their discoveries concerning signal transduction in the nervous system. Greengard's contribution to the work was his discovery of the mechanism by which
dopamine and several other
neurotransmitters carry messages between nerve cells. His findings contributed to an improved understanding of how several drugs work in the body.