Spemann Spe·mann (shpā'män'), Hans. 1869-1941.
German zoologist and physiologist. He won a 1935 Nobel Prize for his discovery of the organizer effect in embryonic development.
German embryologist who was awarded the Nobel Prize for Physiology or Medicine in 1935 for his discovery of the effect now known as embryonic induction, the influence exercised by various parts of the embryo that directs the development of groups of cells into particular tissues and organs
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