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Alexander Kovalevsky (1840-1901)

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Alexander Kovalevsky was born on 7 November 1840 in
Dvinsk in Russia, studied medicine at the University of
Heidelberg, and was Professor of Embryology at the University
of St Petersburg. He showed that all animals pass
through the gastrulation stage (the process by which the
young embryo acquires its three germ layers). Eponymously
he is remembered by the neuroenteric canal of
Kovalevsky, also known as the blastophoric canal in the

Alexander Onufrievich Kovalevsky (1840-1

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