The pictures in Figure 4 illustrate the sample expressions of cleaved caspase-3, Bax, Bcl-2, Ki67, VEGFA, VEGFR-2, CD24, CD44, CD133, ALDH1A1, EpCam, H3K4m3, H3K9m3, H4K16ac, and H4K20m3 in rat BC tissue. The gene discussed is CASP3; the disease is breast cancer.