Enhancement of Recombinant Human Endostatin on the Radiosensitivity of Human Pulmonary Adenocarcinoma A549 Cells and Its Mechanism

Table 3

Parameters of A549 cells in single-hit multitarget model under different conditions.

Parameters	Normoxia		Hypoxia
	Radiotherapy	Endostar + Radiotherapy	Radiotherapy	Endostar + Radiotherapy
𝐷0(Gy)	1.36	1.30	1.693	1.39
𝐷𝑞(Gy)	1.019	1.015	2.453	1.026
𝑁	2.67	2.61	4.295	2.798
SF2	0.521	0.519	0.793	0.532
SER	1	1.04	1	1.22

Notes: 𝐷₀: the mean lethal dose; 𝐷_𝑞: quasi-threshold; 𝑁: extrapolation number; SF₂: survival fraction at irradiation dose of 2Gy; SER: sensitization enhancement ration.