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Israel Kleiner, circa 1915. Photograph by Louis Schmidt

Courtesy of the Rockefeller Archive Center

Israel Simon Kleiner (1885 –1966) was a biochemist whose work helped lead to the discovery of insulin. He received his Ph.D. in biochemistry at Yale in 1909. From 1910, he worked as an assistant in physiology at the Rockefeller Institute until 1914, when he became an associate. In 1919, at the Rockefeller Institute, Kleiner was one of the first to demonstrate the effect of extracts from the pancreas on animals, causing hypoglycemia. These were the early efforts that eventually helped lead to the discovery of insulin.

See also Discovery, Interrupted

Years at The Rockefeller Institute: 1910-1919


Israel Kleiner, insulin, RIMR


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