title: Tryptophan's role as a vitamin precursor (Krehl et al., 1945).
authors.affiliation: Department of Biochemistry, University of Minnesota, St. Paul 55108, USA.
authors.forename: L M
authors.initials: LM
authors.lastname: Henderson
mesh_terms: D000818:Animals; D049673:History, 20th Century; D006801:Humans; D009525:Niacin / Q000096:biosynthesis*; D009751:Nutritional Requirements; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D009525:Niacin; D014364:Tryptophan