Science Fair Project Encyclopedia
Simon Flexner (March 25, 1863 - May 2, 1946) was a physician, administrator, and professor of pathology at the University of Pennsylvania. He was the first director of the Rockefeller Institute for Medical Research (1901-1935) and a trustee of the Rockefeller Foundation. He was also a friend and advisor to John D. Rockefeller, Jr..
He was the elder brother of Abraham Flexner.
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