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Emil Witschi, Swiss-American biologist

Emil Witschi, Swiss-American biologist

C028/4893

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Credit

AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY AMERICAN PHILOSOPHICAL SOCIETY / SCIENCE PHOTO LIBRARY

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Editorial use only.

Caption

Emil Witschi (1890-1971), Swiss-American reproductive biologist. After studying and teaching in Switzerland Witschi spent a year travelling in USA, studying and working in various research institutions. In 1927 Witschi took up a permanent position a Iowa University as Professor of Zoology. He is best known for his work on sexual differentiation in embryos. In 1955 he published the textbook 'The Development of Vertebrates'.

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