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mRNA expressions of different inflammatory cytokines in the prefrontal cortex. Fold increase of pro-inflammatory cytokines (TNF-α, IL-1β) (A,B); Fold increase of M2 anti-inflammatory cytokine (IL-4) (C). Fold increase of the ratio of IL-1β/IL-4 (D). The data are expressed as mean ± SEM; n = 4 for each group; *P < 0.05 compared to the Sham group, #P < 0.05 compared to the SNI group.
