Anti-tumor activities and apoptosis-regulated mechanisms of bufalin on the orthotopic transplantation tumor model of human hepatocellular carcinoma in nude mice

Figure 3 A: Ultrastructural changes of the orthotopic transplantation tumor of NS group in nude mice (scanning electron microscope × 10 000); B: Characteristic apoptosis in the orthotopic transplantation tumor cells of BF1 group in nude mice (scanning electron microscope × 10 000).