Western blot analysis with anti-p65, anti-p50 and anti-HDAC2 antibodies on protein extracts from K562 transfected with p3xFLAG-CSDA a (lanes 1 and 4), p3xFLAG-CSDA b (lanes 2 and 5) or p3xFLAG (lanes 3 and 6) immunoprecipitated with an anti-FLAG antibody (lanes 1, 2, 3) or not immunoprecipitated (lanes 4, 5, 6).