Table 1.

The levels (lesions/10⁶ nucleosides) of 5′R-cdG, 5′S-cdG, 5′R-cdA, 5′S-cdA, 8-oxo-dG, and 8-oxo-dA in the brain tissues of control SCID and tumor-bearing SCID, 4 weeks of age- and 17 weeks of age, respectively (mean ± standard deviation of six sample measurements).

	5′R-cdG	5′R-cdA	5′S-cdG	5′S-cdA	8-oxo-dG	8-oxo-dA
control 4w	0.176 ± 0.011	0.140 ± 0.016	0.205 ± 0.028	0.116 ± 0.014	1.828 ± 0.183	0.202 ± 0.041
control 17w	0.179 ± 0.036	0.146 ± 0.019	0.211 ± 0.024 1,*	0.137 ± 0.012 2,*	1.783 ± 0.208	0.201 ± 0.046
tumor-bearing 4w	0.185 ± 0.018	0.153 ± 0.014	0.213 ± 0.034	0.112 ± 0.014	1.730 ± 0.276	0.201 ± 0.012
tumor-bearing 17w	0.178 ± 0.031	0.140 ± 0.020	0.245 ± 0.025 3,*	0.136 ± 0.012 3,*	1.903 ± 0.234	0.216 ± 0.046

¹ Comparison between control 17-week-old mice vs. tumor-bearing 17-week-old mice, ² Comparison between control 4-week-old mice vs. control 17-week-old mice, ³ Comparison between tumor-bearing 4-week-old mice vs. tumor-bearing 17-week-old mice. Statistical significance: * (p < 0.05).