Oxygen radical absorbance capacity (ORAC). Oxygen radical absorbance capacity (ORAC) in urethane-treated mice on MAK-supplemented diets, urethane-treated mice on a normal diet, and control mice on the normal diet (Panel A). The time-course experiment was performed on healthy male mice put on the MAK4+5-supplemented diet (for 0, 3 days, 1 week, 2 weeks,1 month, or 2 months) without any previous treatment (Panel B). One ORAC unit represents the equivalent ORAC activity of 1 μmol Trolox. (* P < 0.05). Each group of animals was composed of 10 mice. At 36 weeks of age the mice were sacrificed, the serum collected and stored at -80°C until the day of the assay. Data are reported as mean ± SEM of three experiments. Statistical analysis was performed by Two Way ANOVA Test followed by Post Hoc Bonferroni analysis.