Edward Tyson
Edward Tyson (20 January 1651 – 1 August 1708) was a British scientist and physician, commonly regarded as the founder of modern comparative anatomy, which compares the anatomy between species.
Robert A. Good
Robert Alan Good (May 21, 1922 – June 13, 2003) was an American physician who performed the first successful human bone marrow transplant between persons who were not identical twins. He is regarded as a founder of modern immunology.