Table 1. IC50 value and RIs of HepG2 and HepG2/5-FU cells treated with different chemotherapeutic agents.

Drugs	HepG2 IC50(μmol/L)	HepG2/5-FU
		IC50(μmol/L)	RI
5-fluorouracil	44.5±1.0	400.4±8.3**	9.3±1.5
Cisplatin	3.5±0.2	100.9±6.2**	36.3±4.2
Oxaliplatin	9.8±1.2	89.3±5.1**	10.1±1.9

IC50 values and RI were determined by the CCK-8 method. Data are expressed as means ± SD. **P < 0.01 versus the parental cells.