In 1976 Drs. Dominique Stehelin , J. Michael Bishop and Harold E. Varmus of the University of California , San Francisco demonstrated that oncogenes were activated proto-oncogenes , found in many organisms including humans .
In 1976 J. Michael Bishop and Harold E. Varmus of the University of California , San Francisco showed that oncogenes were activated proto-oncogenes , found in many organisms including humans .