Table 1.

MNPs affected cell cycle distribution of BEL-7402 cells

	Cell cycle (%)
		G0-G1	S	G2
Control		60.13	32.65	7.22
Fe3O4	0.05 mg/mL	63.55	26.72	9.73
	0.1 mg/mL	78.83*	14.09*	7.08
	1 mg/mL	88.91	3.52**	7.57
OA-Fe3O4	0.05 mg/mL	64.50	30.37	5.13
	0.1 mg/mL	63.59	29.75	6.67
	1 mg/mL	75.84*	21	3.15
C-Fe	0.05 mg/mL	59.32	30.61	10.07
	0.1 mg/mL	65.96	23.61	10.43
	1 mg/mL	56.56	26.88	16.56*

After BEL-7402 cells were treated with MNPs (0.05 and 1 mg/mL) for 24 h, cell cycle assay was carried out by PI staining using flow cytometry. *P < 0.05 vs. control; **P < 0.01 vs. control.