Tryptophane as precursor of nicotinamide in mammals.
D000818:Animals; D008322:Mammals; D009525:Niacin; D009536:Niacinamide; D009539:Nicotinic Acids; D014364:Tryptophan
D009539:Nicotinic Acids; D009536:Niacinamide; D009525:Niacin; D014364:Tryptophan
NICOTINIC ACID; TRYPTOPHAN