Fig. 6From: Enhancement of anti-tumor effects of 5-fluorouracil on hepatocellular carcinoma by low-intensity ultrasoundInduction of the caspase-dependent apoptosis by low-intensity ultrasound combined with 5-FU. Effects of NAC and Z-VAD-FMK on BEL-7402 cell apoptosis were determined by the Annexin V-PI assayBack to article page