Table.

Response parameters of sensitive FSC1-3 and resistant T53 cells to x-rays and protons.

Experiment	A ± SDα	B ± SDβ	D(Sf = 0.01) ± SD D	RBE ± SD RBE
E1 FSC1-3 x-ray	0.7992 ± 0.0032	0	2.882 ± 0.012	1.113 ± 0.013
E1 FSC1-3 proton	0.8893 ± 0.0095	0	2.590 ± 0.028
E1 T53 x-ray	0.281 ± 0.018	0.0231 ± 0.0029	5.605 ± 0.037	1.187 ± 0.049
E1 T53 proton	0.432 ± 0.062	0.012 ± 0.012	4.72 ± 0.19
E2 FSC1-3 x-ray	0.8230 ± 0.0036	0	2.798 ± 0.012	1.091 ± 0.019
E2 FSC1-3 proton	0.898 ± 0.015	0	2.564 ± 0.044
E2 T53 x-ray	0.313 ± 0.032	0.0185 ± 0.0044	5.55 ± 0.10	1.161 ± 0.044
E2 T53 proton	0.376 ± 0.048	0.0222 ± 0.0076	4.78 ± 0.16
Pooled FSC1-3 x-ray	0.8005 ± 0.0027	0	2.8763 ± 0.0099	1.117 ± 0.012
Pooled FSC1-3 proton	0.8942 ± 0.0089	0	2.575 ± 0.026
Pooled T53 x-ray	0.297 ± 0.016	0.0206 ± 0.0024	5.588 ± 0.042	1.181 ± 0.030
Pooled T53 proton	0.403 ± 0.036	0.0177 ± 0.0062	4.73 ± 0.11

Abbreviations: RBE, relative biological effectiveness; E1, experiment 1; E2, experiment 2.