J. Michael Bishop

From www​.nndb​.com

J. Michael Bishop (1936– )

A virologist who, working with Harold Varmus at UCSF, discovered that homologues of the src gene were present in all cells.  Bishop would thus advance the hypothesis that viral cancer-​​causing genes (viral oncogenes) were, in fact, derived from precursor genes (proto-​​oncogenes) present in all cells.