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Weng Gines

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Edward A. Doisy

Born 13 Nov 1893; died 23 Oct 1986 at age 92.Edward Adelbert Doisy was an American biochemist who shared (with Henrik Dam) the 1943 Nobel Prize for Physiology or Medicine for his isolation and synthesis of vitamin K, a substance that encourages blood clotting (1939), used in medicine and surgery. With the embryologist Edgar Allen (1922-34), he developed assay techniques that facilitated research on sex hormones. Doisy and his associates isolated the sex hormones estrone (theelin, 1929; the first estrogen to be crystallized), estriol (theelol, 1930), and estradiol (dihydrotheelin, 1935). In 1936-39 he isolated two forms of the vitamin, (K1 from lucerne seed and K2 from fish meal, in a pure crystalline form), determined their chemical structures, and synthesized the vitamin.«

Friendship between wom...

Friendship between women: A woman doesn’t come home one night. The next day she tells her husband that she had slept over at a girlfriend's house.
The husband calls his wife's 10 best friends. None of them know anything about it.
Friendship between men: A man doesn’t come home one night. The next day he tells his wife that he had slept over at a friend’s house. The wife calls her husband's 10 best men friends. Eight of them confirm that he had slept over, and two claim that he was still there.
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