Table 1.

Radiobiological parameters in the different Groups.

Cell line	D0	Dq	SF2
H1299-NC	2.155±0.131	1.120±0.143	0.545±0.021
H1299-sh	1.764±0.094*	0.356±0.179**	0.368±0.015**

D0, the incremental dose required for reducing the fraction of colonies to 37%, indicative of single-event killing; Dq, quasi-threshold dose; SF2, the survival fraction after 2Gy radiation exposure. *P<0.05, **P<0.01.