Urinary excretion of nicotinic acid and N-methyl-nicotinamide by rats fed tryptophan and diets deficient in various B vitamins.
D000818:Animals; D004032:Diet; D009525:Niacin; D009536:Niacinamide / Q000031:analogs & derivatives; D009539:Nicotinic Acids; D051381:Rats; D014364:Tryptophan; D014803:Vitamin B Complex