Table 3. Concentration response data for the different antioxidants with 1 hour pre-incubation time (n = 10, repeated 3 times for each volunteer).

Antioxidant	Without antioxidant	1/100 x SC	1/10 x SC	1 x SC	10 x SC	100 x SC
Zinc	0.144 ± 0.008	0.150 ± 0.005	0.151 ± 0.004	0.151 ± 0.007	0.145 ± 0.005	0.144 ± 0.004
Trolox	0.143 ± 0.005	0.141 ± 0.005	0.139 ± 0.010	0.137 ± 0.008	0.145 ± 0.011	0.137 ± 0.011
Lipoic acid	0.164 ± 0.004	0.160 ± 0.002	0.156 ± 0.002	0.157 ± 0.007	0.153 ± 0.007	0.151 ± 0.011
ß-carotene	0.150 ± 0.007	0.135 ± 0.007*	0.131 ± 0.007*	0.128 ± 0.006*	0.129 ± 0.006*	0.129 ± 0.004*
Selenium	0.155 ± 0.011	0.144 ± 0.008*	0.140 ± 0.007*	0.133 ± 0.006*	0.140 ± 0.005*	0.140 ± 0.004*
Vitamin E	0.163 ± 0.007	0.150 ± 0.005*	0.145 ± 0.004*	0.144 ± 0.004*	0.150 ± 0.007*	0.147 ± 0.005*
Vitamin C	0.146 ± 0.008	0.133 ± 0.004*	0.133 ± 0.005*	0.125 ± 0.004*	0.118 ± 0.005*	0.109 ± 0.004*
NAC	0.150 ± 0.009	0.146 ± 0.009	0.133 ± 0.005*	0.115 ± 0.004*	0.094 ± 0.008*	0.086 ± 0.006*
Q 10	0.136 ± 0.015	0.136 ± 0.008	0.124 ± 0.007	0.121 ± 0.011	0.112 ± 0.009*	0.114 ± 0.060*

The numbers indicate mean values and standard deviations of x-ray induced γ-H2AX-foci (excess foci)/cell after irradiation with 10 mGy.

* indicates a significant deviation from the base level without antioxidant (p <0.05) using Dunnett's test.