Medawar, Peter Brian (1915–1987)
Peter Medawar was a British biologist who shared with Frank Burnet the 1960 Nobel Prize in Physiology or Medicine for their work on immunological
tolerance. Inspired by Burnet's ideas, Medawar showed that if fetal mice
were injected with cells from eventual donors, skin grafts made onto them
later from those donors would "take," thus showing the possibility of acquired
tolerance and hence, ultimately, organ transplants.