the effect of a 45-week treatment with different doses of 2,3,7,8-tetrachloro-dibenzo-p-dioxin ( tcdd ) ( 0.01 , 0.10 and 1.00 microgram/kg/week ) was evaluated in female rat liver by determining cytochrome p-450 and b5 content and the activities of the enzymes cytochrome c reductase , aryl hydrocarbon hydroxylase ( ahh ) and 7-ethoxycoumarin o-deethylase ( 7-ecd ) ;
C0010762
cytochrome
C0003927
aryl hydrocarbon hydroxylase