Figure 3From: Cytotoxic effects and the mechanism of three types of magnetic nanoparticles on human hepatoma BEL-7402 cells MNPs induced apoptosis of BEL-7402 cells by Annexin V/PI assay. Annexin V-FITC/PI assay shows cell apoptosis by flow cytometry. Exposure of BEL-7402 cells to MNPs (0.05 and 1 mg/mL) for 24 h increased cell apoptosis. *P < 0.05 vs. control; **P < 0.01 vs. control.Back to article page