Table 4.

Inhibition effect of VPA on Caki-2 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	12.00	17.33	20.33
4	21.00	30.67	38.67
8	30.67	38.67	48.33
16	40.33	45.67	52.00
24	49.33	57.67	63.33
32	59.67	72.67	81.33
40	67.33	78.67	92.67