The discovery of vitamins.
D000818:Animals; D001205:Ascorbic Acid / Q000266:history; D001602:Beriberi / Q000266:history / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D005060:Europe; D005260:Female; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D008297:Male; D009539:Nicotinic Acids / Q000266:history; D010383:Pellagra / Q000266:history / Q000628:therapy; D012279:Rickets / Q000266:history / Q000628:therapy; D012614:Scurvy / Q000266:history / Q000628:therapy; D013831:Thiamine / Q000266:history; D014481:United States; D014801:Vitamin A / Q000266:history; D014807:Vitamin D / Q000266:history; D014815:Vitamins / Q000266:history*
D009539:Nicotinic Acids; D014815:Vitamins; D014801:Vitamin A; D014807:Vitamin D; D001205:Ascorbic Acid; D013831:Thiamine