Fig. 4From: Combined effect of BCG vaccination and enriched environment promote neurogenesis and spatial cognition via a shift in meningeal macrophage M2 polarizationEffect of BCG vaccination on the expression of cytokines in the serum and hippocampus. The levels of IFN-γ, IL-4, IL-10, TNF-a, IL-1β, and IL-6 in the hippocampus (a–f) and serum (g–l) were quantitatively analyzed by ELISA. *p < 0.05, **p < 0.01; two-way ANOVA, LSD post hoc test; n = 6 per group. The data are presented as the means ± SEMsBack to article page