title: Needs and sources of carotenoids and vitamin A.
authors.affiliation: Department of Biochemistry and Biophysics, Iowa State University, Ames 50011.
authors.forename: J A
authors.initials: JA
authors.lastname: Olson
mesh_terms: D002338:Carotenoids / Q000008:administration & dosage*; D002648:Child; D004032:Diet; D006801:Humans; D009751:Nutritional Requirements; D009626:Terminology as Topic; D014801:Vitamin A / Q000008:administration & dosage*
chemical_list: D014801:Vitamin A; D002338:Carotenoids