title: Provitamin A food sources and serum retinol.
authors.forename: E H
authors.initials: EH
authors.lastname: Harrison
authors.forename: J C
authors.initials: JC
authors.lastname: Smith
mesh_terms: D002338:Carotenoids / Q000378:metabolism*; D005638:Fruit / Q000378:metabolism* / Q000502:physiology; D006801:Humans; D009753:Nutritive Value; D014675:Vegetables / Q000378:metabolism* / Q000502:physiology; D014801:Vitamin A / Q000096:biosynthesis* / Q000097:blood*
chemical_list: D014801:Vitamin A; D002338:Carotenoids