(a)
(b)
Figure 1: Effect of different concentrations of lithium (Li), isolated xanthine-catechin (XC) molecules, and XC mixture on macrophage proliferation in 72 h cultures. Effect of different Li concentrations on macrophage proliferation was analyzed using one-way analysis of variance (ANOVA), followed by the Tukey post hoc test. Effect of different XC molecule concentrations on macrophage proliferation was analyzed by performing two-way ANOVA followed by the Bonferroni post hoc test. The different letters (i.e., A, B, C, and D) indicate statistical differences in each treatment at .