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People/Characters: Percy Lavon Julian

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Black pioneers of science and invention by Louis Haber
Inspiring African-American Inventors: 9 Extraordinary Lives (Great Scientists and Famous Inventors) by Jeff C. Young

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Percy Lavon Julian (April 11, 1899 – April 19, 1975) was an African American research chemist and a pioneer in the chemical synthesis of medicinal drugs from plants.[1] He was the first to synthesize the natural product physostigmine, and a pioneer in the industrial large-scale chemical synthesis of the human hormones progesterone and testosterone from plant sterols such as stigmasterol and sitosterol. His work laid the foundation for the steroid drug industry's production of cortisone, other corticosteroids, and birth control pills.

Percy Lavon Julian in Wikipedia

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