Assertion: l tryptophan | /r/HasProperty | reviewed by friedman
Facets:
Source sentences:
text: As part of a program to evaluate the chemistry and the nutritional and toxicologic aspects of novel amino acids formed during food processing, including d-amino acids, we compared the weight gain in mice fed with free amino acid diets in which d-tryptophan was substituted for l-tryptophan (reviewed by Friedman and Levin60,61).