title: Discovery of the effect of tryptophan on niacin deficiency.
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002364:Caseins / Q000378:metabolism; D004032:Diet; D004283:Dog Diseases / Q000209:etiology; D004285:Dogs; D049673:History, 20th Century; D006801:Humans; D009539:Nicotinic Acids / Q000172:deficiency* / Q000378:metabolism; D009751:Nutritional Requirements; D010383:Pellagra / Q000266:history* / Q000662:veterinary; D051381:Rats; D012959:Socioeconomic Factors; D013045:Species Specificity; D014364:Tryptophan / Q000378:metabolism* / Q000494:pharmacology; D003313:Zea mays / Q000009:adverse effects; D015028:Zein / Q000009:adverse effects
chemical_list: D002364:Caseins; D009539:Nicotinic Acids; D014364:Tryptophan; D015028:Zein