biography
| name: |
Holtfreter, Johannes (Friedrich Karl)
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| sex:
| male
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| lived:
| (1901–92)
|
| biography:
| Embryologist, born in Richtenberg, Germany. He taught in Germany (1928–38), emigrated to attend McGill University, Montreal (1942–6), then went to the USA to join Rochester University (1946–69). After over 40 years investigating morphogenesis and differentiation in amphibian, avian, and mammalian embryos, he concluded that the development of specialized organs from the undifferentiated early embryo is the result of both directed cell movement and separations and reassociations controlled by selective cell adhesion. |
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