Table 2.

Change of viability in MG-63 and U-2 OS cells were treated with various concentrations of PPI for 24 h (%, $\bar{x}±s$)

Group	n	MG-63	U-2 OS
PPI-Ctrl	3	95.18±0.19	98.52±0.12
PPI-200 nM	3	91.66±1.62	97.32±0.18
PPI-400 nM	3	88.27±0.89	90.64±1.39
PPI-600 nM	3	72.03±3.51a	80.52±0.79a

Notes: Ctrl: treated with PBS; 200 nM: treated with 200 nM PPI; 400 nM PPI: treated with 400 nM PPI; 600 nM PPI: treated with 600 nM PPI. Cells were treated with various concentrations of PPI for 24 h. PPI: polyphyllin I. The components were analyzed by one-way analysis of variance. ^aP < 0.05 versus the control group.