Werner_H._Kirsten
Werner H. Kirsten (October 29, 1925 in Leipzig[1] — December 24, 1992 in Hyde Park, Chicago)[2] was a German-American pathologist and cancer researcher, known as the discoverer and namesake of a cancer-causing virus, the Kirsten Rat Sarcoma Virus,[lower-alpha 1][3] and consequently of the KRAS oncogene.