Histological evaluation of DMBA induced tumors of different SAFB1 genotype. A) Both SAFB1+/+ and SAFB1+/- mice mostly exhibit squamous tumor type patterns. Representative pictures are shown (magnification 20×). B) DMBA-induced tumors were stained with cleaved caspase 3 antibody. Representative pictures are shown (magnification 40×). Bars represent 100 μm for A and 50 μm for B.