Preformed vitamin A, carotene, and total vitamin A activity in usual adult diets.
D000328:Adult; D002338:Carotenoids / Q000032:analysis* / Q000378:metabolism; D004032:Diet; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009749:Nutrition Surveys; D014801:Vitamin A / Q000032:analysis* / Q000378:metabolism
D014801:Vitamin A; D002338:Carotenoids