WT1 binds to the promoters of the p63 gene. ChIP/PCR analysis of WT1D transfected and non-transfected FaDu cells. A. PCR analysis of the precipitate using p1, p2 and p3 primer pairs. Size and location of the amplified products are depicted on the right. B and C. RT-qPCR analysis of the precipitate using the p2 (B) and p3 (C) primer pairs.