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Johannes Holtfreter, embryologist

Johannes Holtfreter, embryologist

C028/6343

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Credit

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

Restrictions:

Editorial use only.

Caption

Johannes Holtfreter (1901-1992), German-American embryologist and developmental biologist, holding two alligators. Holtfreter is best known for his work on the 'organizer', the cluster of cells in an embryo that induces the development of the central nervous system.

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