the enzymatic activities of 7-ethoxyresorufin and aryl hydrocarbon hydroxylase , when expressed per cytochrome p-450 content , were identical in microsomes from cells treated with either 3-methylcholanthrene or the combination of 3-methylcholanthrene and 17 alpha-ethynylestradiol .
C0003927
aryl hydrocarbon hydroxylase
C0010762
cytochrome p-450