Definition
Peter Medawar (1915-1987) was a renowned British scientist. He won the Nobel Prize in Physiology or Medicine in 1960 for his work on acquired immunological tolerance. He essentially figured out why our bodies sometimes accept foreign tissues and sometimes reject them. This discovery was crucial for organ transplantation. He was also a talented writer and philosopher of science. Think of him as a scientific detective, unraveling the mysteries of the immune system.