The tryptophan requirement of the rat as affected by niacin and level of dietary nitrogen.
D000818:Animals; D004032:Diet; D009525:Niacin / Q000494:pharmacology*; D009539:Nicotinic Acids; D009584:Nitrogen / Q000494:pharmacology*; D051381:Rats; D014364:Tryptophan / Q000378:metabolism*
D009539:Nicotinic Acids; D009525:Niacin; D014364:Tryptophan; D009584:Nitrogen
NICOTINIC ACID/effects; NITROGEN/effects; TRYPTOPHAN/metabolism