BFH12 cells were exposed to 0.1% DMSO and 100 μM RU486 for 6 hours. Chromatin was isolated, subjected to ChIP using anti-human RXRα antibody and quantified by qPCR as described in S1 File. Results for ER6 and DR5 DNA regions are reported in panels A and B, respectively. Data are normalized to input DNA and expressed as % ChIP/input. The experiment was performed four times independently, and similar results were obtained. The data shown derived from a representative experiment. Chromatin samples from control cells immunoprecipitated with or without Histone H3 antibody are shown as Histone H3 and beads, respectively. A further negative control (exon 13), representing a CYP3A28 DNA region without NR binding sites, is reported in the graph. In all experiments, negative and positive controls behaved as expected.