Table 3.

Inhibition effect of VPA on 786-O cell lines examined after 24, 48, and 72 hours of culture

VPA (mM)	Inhibition rate (%)
	24 h	48 h	72 h
0	0	0	0
1	9.33	14.00	14.33
4	18.67	27.33	30.67
8	32.33	37.67	43.33
16	41.67	49.00	54.00
24	49.00	57.00	61.00
32	61.00	66.33	75.33
40	70.00	76.00	85.67