Assertion: dietary tryptophan | /r/CapableOf | sustain niacin nutrition
Facets:
value: without niacin intake in rats
type: OTHER
Source sentences:
text: Although urinary excretion of nicotinamide and its metabolites, used as indices of the conversion of nicotinamide from tryptophan, gradually decreased to 60% from 30 weeks of age, these results show that enough dietary tryptophan can sustain niacin nutrition without niacin intake in rats.