Table 1.

IRIF numbers, cell volume and analyzed number of cells for 1.9 Gy and 3.0 Gy of gamma irradiation for all time points. Uncertainties represent the standard error of the mean.

Dose	Time (min)	53BP1		DNA-PKcs		Cell volume (µm3)	Number of cells
		#IRIF/cell	#IRIF/µm3	#IRIF/cell	#IRIF/µm3
0 Gy		5 ± 4	0.007 ± 0.006	4 ± 4	0.006 ± 0.006	723 ± 100	20
1.9 Gy	3	32.7 ± 2.6	0.039 ± 0.004	35.4 ± 2.5	0.043 ± 0.006	864 ± 55	14
	5	29.7 ± 3.7	0.044 ± 0.005	35.9 ± 4.8	0.052 ± 0.005	685 ± 79	14
	10	30.5 ± 3.6	0.042 ± 0.009	35.1 ± 5.1	0.0486 ± 0.011	843 ± 108	20
	30	27.7 ± 2.8	0.0292 ± 0.0018	29.3 ± 2.5	0.0312 ± 0.0013	964 ± 111	18
3.0 Gy	3	39.5 ± 2.5	0.060 ± 0.004	43.1 ± 2.5	0.064 ± 0.003	675 ± 57	18
	5	35.0 ± 3.0	0.073 ± 0.009	35.3 ± 2.9	0.073 ± 0.009	531 ± 65	20
	10	33.3 ± 2.5	0.060 ± 0.005	35.2 ± 2.4	0.064 ± 0.005	567 ± 36	20
	30	39.2 ± 4.8	0.062 ± 0.006	39.9 ± 4.7	0.063 ± 0.006	660 ± 91	18