GOLDSMITH, G A Studies of niacin requirement in man. II. Requirement on wheat and corn diets low in tryptophan. [electronic resource] - The Journal of nutrition Jul 1955 - 371-86 p. digital Publication Type: Journal Article ISSN: 0022-3166 Standard No.: 10.1093/jn/56.3.371 doi Subjects--Topical Terms: DietDietary Fats, UnsaturatedHumansMaleNiacin--metabolismPlant OilsTriticumTryptophan--metabolismZea mays