Ansfected cells from untransfected cells by FACS analyses.MCF-p=0.p=0.0001 p=0.0001 p=0.Figure 4 Histone signature at the MAGE-A1 promoter as examined by chromatin immunoprecipitation. DNA was derived from unstimulated (basal) MCF-7 cells, 5-aza-CdR- and/or TSA-stimulated MCF-7 cells and MCF-7 cells transfected with the expression plasmid encoding for BORIS. DNA-bound histones were immunoprecipita