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    Caspar Friedrich Wolff

    German physiologist and embryologist (–)

    Caspar Friedrich Wolff (18 January – 22 February ) was a German physiologist and embryologist who is widely regarded as one of the pioneers of modern embryology.

    Life

    Wolff was born in Berlin, Brandenburg. In he graduated as an M.D. from the University of Halle with his dissertation "Theoria Generationis", where he revived and supported the theory of epigenesis previously proposed by Aristotle and William Harvey.

    The paper consisted of three parts devoted to (1) development of plants, (2) development of animals, and (3) theoretical considerations. It indicated that organs are formed in differentiated layers from undifferentiated cells.

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    Traditional and prevailing theory had speculated that organisms were already preformed in the seed (theory of preformation), that is in the human a homunculus was already sitting in the sperm. His views were not well received.

    Albrecht von Haller was a powerful antagonist. Duri