estrogen administration to ovariectomized rats on normal diet resulted in increased reductase activity and was correlated with decreased serum cholesterol and increased liver cholesterol levels with mestranol ( me ) , ethinyl estradiol ( ee ) and estradiol benzoate ( eb , 250 microgram ) but increased serum and liver cholesterol levels with 25 microgram and 100 microgram eb administration .
C0025506
mestranol
C0015011
ethinyl estradiol