Figure 4. Identification of cell type–specific DNase I hypersensitive sites.

(a,b) Real-time PCR was performed on both CD4⁺ T cells and GM06990 cells. Real-time PCR using primer sets that flank random regions of the genome or DNase-chip peaks that are present for both cell types (a). Real-time PCR using primer sets that flank DNase-chip peaks that are present in only CD4⁺ T cells (CD4) or GM06990 cells (GM; b).