Figure 6From: Cytotoxic effects and the mechanism of three types of magnetic nanoparticles on human hepatoma BEL-7402 cells Caspase-3 activity of BEL-7402 cells after incubation with MNPs for 24 h. After BEL-7402 cells were treated with MNPs (0.05 and 1 mg/mL) for 24 h, caspase-3 activity was determined using caspase-3/CPP32 Colorimetric Assay Kit. *P < 0.05 vs. control; **P < 0.01 vs. control.Back to article page