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SIN3A is necessary for TCDD-induced CYP1A1 protein expression but not for AHR protein expression. a, Western blot analysis of the CYP1A1 and AHR proteins after transfection of Hepa-1 cells with siAHR, siSIN3A, or a scrambled siRNA in the absence (−) or presence (+) of TCDD. Densitometry quantification of the Western blot was normalized to GAPDH (b).
