CDDP and ETP
Cell line	CDDP concentration	IC50 of ETP (μg/ml)	Combination index
A99	0.00	2.62	1.00
	0.50	0.88	0.47
	1.00	1.15	0.71
	2.00	0.53	0.74
	3.00	<0.01	0.80
	3.74	0.00	1.00
TCC-NECT-2	0.00	2.76	1.00
	0.30	0.11	0.32
	0.60	0.05	0.58
	1.06	0.00	1.00
TYUC-1	0.00	0.17	1.00
	0.05	0.05	0.49
	0.10	0.04	0.62
	0.15	<0.01	0.58
	0.26	0.00	1.00

Abbreviations: CDDP, cisplatin; ETP, etoposide.