The intestinal absorption and metabolism of vitamin A and beta-carotene in man.
D000818:Animals; D002247:Carbon Isotopes; D002338:Carotenoids / Q000378:metabolism*; D002845:Chromatography; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008875:Middle Aged; D051381:Rats; D014316:Tritium; D014801:Vitamin A / Q000378:metabolism*
D002247:Carbon Isotopes; D014316:Tritium; D014801:Vitamin A; D002338:Carotenoids