Figure 3.

Total antioxidant capacity (TAC) (A), thiobarbituric acid reactive substances (TBARS) (B), and carbonyl group content (C) in negative sentinel lymph nodes (SLNs), SLNs with micrometastasis, and SLNs with macrometastasis of women with breast cancer. Results are expressed in nmol of Trolox equivalents per mg of protein for TAC, in ng of malondialdehyde per mg of protein for TBARS, and in nmol per mg of protein for protein carbonyls (mean ± SEM; n = 13–43; *P < 0.05; **P < 0.01; ^aP < 0.05 micrometastasis versus macrometastasis).