Figure 3: Comparison of changes in the levels of oxidative markers in macrophages treated with phytohemagglutinin (PHA), lithium (Li), xanthine-catechin (XC) mixture, and Li and XC (LXC) mixture and incubated for 72 h. GPx = glutathione peroxidase, NO = nitric oxide, ROS = reactive oxygen species, and SOD = superoxide dismutase. Statistical analysis was performed using two-way analysis of variance followed by the Bonferroni post hoc test. The different letters (i.e., A, B, C, and D) indicate statistical differences in each treatment at .