John Michael Bishop was an American immunologist and microbiologist who shared the 1989 Nobel Prize in Physiology or Medicine with Harold E. Varmus. He was a faculty member at the University of California, San Francisco (UCSF), where he also served as chancellor from 1998 to 2009. The Nobel Prize in Physiology or Medicine 1989, announced October 9, 1989. J. Michael Bishop and Harold E. Varmus, “for their discovery of the cellular origin of retroviral oncogenes”. J. Michael Bishop: born 1936, York, PA, USA. Harold E. Varmus: born 1939, Oceanside, NY, USA. Wiki link Wiki link Data: the Nobel Foundation (CC0).