Effect of niacin precursors on growth of rats fed tryptophan-low rations.
D000818:Animals; D009525:Niacin; D009539:Nicotinic Acids; D051381:Rats; D014364:Tryptophan
D009539:Nicotinic Acids; D009525:Niacin; D014364:Tryptophan
NICOTINIC ACID; TRYPTOPHAN