Seasonal variation of carotene and vitamin A in butter-fat and in serum.
Lord
J W
JW
Research Department, Messrs J. Bibby and Sons, Ltd., Liverpool.
D001769:Blood; D002079:Butter; D002338:Carotenoids; D006801:Humans; D012621:Seasons; D014801:Vitamin A; D014815:Vitamins
D014815:Vitamins; D014801:Vitamin A; D002338:Carotenoids; D002079:Butter