Table 1.

The parameters of a multitarget model based on clonogenic survival assay

Cell line	N	D0	Dq	SF2	SER
KYSE-150R + IgG	2.637	3.42	3.32	0.89
KYSE-150R + nimo	2.024	2.75	1.94	0.73	1.24
KYSE-150 + IgG	2.022	2.38	1.68	0.68
KYSE-150 + nimo	1.96	2.17	1.46	0.63	1.099

Abbreviations: N, extrapolation number that measures the width of shoulder of the survival curve; D0, the dose that reduces cell survival to 37%; Dq, the intercept of the extrapolated high dose; SF2, surviving fraction at 2 Gy; SER, sensitivity enhancement ratio; IgG, immunoglobulin G; nimo, nimotuzumab.