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Events on Friday 16 May 1947 1
1861 – 1947Frederick Gowland Hopkins (1861-1947)Died 16 May 1947, aged 85Frederick Gowland Hopkins was an English biochemist who discovered the amino acid tryptophan. He showed that the diet needs accessory food factors, later called vitamins. He shared the 1929 Nobel Prize in Physiology or Medicine.