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The relative expression of CYP1A2 mRNA in the liver and brain. (A) The fold changes of CYP1A2 mRNA expression with respect to 7-day-old SD rats. (B) The fold changes of CYP1A2 mRNA expression with respect to liver. GAPDH was used for normalization. Data are expressed as the means ± standard deviation (SD) of five to six biological replicates. *p < 0.05, ***p < 0.001. P, postnatal day.
