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α-NF stimulation decreases the expression of CYP1A1 in keratinocytes. Cells were treated with PM 50 μg/mL in the absence or presence of α-NF (6 h; 5 μM) for 3 h and analyzed by (A) RT-PCR and (B) qRT-PCR. Values are presented as the mean ± SD of three determinations (n=3). **p<0.01 compared with control, #p<0.05 compared with PM50 μg/mL.
