in order to determine the effect of various doses of vitamin a and the interaction between vitamin a and ascorbic acid on cholesterol synthesis , male weanling rats were fed four levels of vitamin a as retinyl acetate ( 0 , 20 , 436 and 6,666 iu/g diet ) and two levels of ascorbic acid ( 0 and 1 mg/g diet ) for 28 days except the highest level of retinyl acetate which was fed for only 3 days .
C0042839
vitamin a
C0073109
retinyl acetate