Daily Almanac for
Nov 10, 2009
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Viktor Hamburger

Age: 100

experimental embryologist who analyzed the developing nervous system. In 1954, he and two colleagues, Rita Levi-Montalcini and Stanley Cohen, discovered the first trophic factor.

Died: St. Louis, June 12, 2001

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Jack Haley, Jr.G - LIan Hamilton
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