Editing Simon Flexner (section)

==Medical school and career==
[[File:The Popular science monthly (1912) (14767301904).jpg|left|thumb|Illustration of Flexner on a 1912 cover of ''[[Popular_Science#Early_history|Popular Science Monthly]]''|upright=0.7]]
He returned to college, getting his medical degree from Louisville Medical College in 1889. He did postgraduate work in pathology at [[Johns Hopkins University]] Medical School, and started teaching there. By 1899, he was a professor of pathology at the [[University of Pennsylvania]].<ref name="griffen"/>

Flexner was elected to the [[American Philosophical Society]] in 1901.<ref>{{Cite web|title=APS Member History|url=https://search.amphilsoc.org/memhist/search?creator=Simon+Flexner&title=&subject=&subdiv=&mem=&year=&year-max=&dead=&keyword=&smode=advanced|access-date=2021-01-27|website=search.amphilsoc.org}}</ref>

He taught at Penn until 1903, but was called to the [[Rockefeller Institute for Medical Research]] (later Rockefeller University), where he started serving as its first director in 1901.<ref>{{Cite news|url=https://www.britannica.com/biography/Simon-Flexner|title=Simon Flexner {{!}} American pathologist and bacteriologist|work=Encyclopedia Britannica|access-date=2017-10-05|language=en}}</ref> He managed the research institute until 1935. Through this affiliation and related work, he came to know the [[philanthropist]] [[John D. Rockefeller]], who supported research and basic medical care.

In December 1907 Flexner declared in a reading of his paper on "Tendencies in Pathology" in the [[University of Chicago]] that it would be possible in the then-future for diseased human organs [[Organ transplantation|substitution for healthy ones by surgery]]—including arteries, stomach, [[Kidney transplantation|kidneys]] and [[Heart transplantation|heart]].<ref>[https://timesmachine.nytimes.com/timesmachine/1908/01/02/104713376.pdf MAY TRANSPLANT THE HUMAN HEART] ([[Portable Document Format|.PDF]]), ''[[The New York Times]]'', January 2, 1908</ref> These previsions became reality in the second half of the 20th century.

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In 1911, Flexner was awarded the [[Cameron Prize for Therapeutics of the University of Edinburgh]].

From 1910 to 1914 he was a trustee of the [[Carnegie Institution]].<ref>{{cite book|title=Carnegie Institution of Washington. Year Book No. 47, July 1, 1947 – June 30, 1948|year=1948|location=Washington, DC|page=vi|url=http://shelf2.library.cmu.edu/Tech/01116801N47.pdf}}</ref>