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Intracerebral injection of TNF-α promotes Kir4.1 expression and causes PTSD-like behaviors. (a) A schematic for the study design of intraventricular injection of TNF-α. (b) Intraventricular injection of TNF-α promoted Kir4.1 protein expression. (c) Intracerebroventricular injection of TNF-α impaired fear extinction. (d) Immobility time in TST. (e) Immobility time in FST. Values are presented as means ± SEM (n = 4–7) in each group. *P < 0.05 vs. control
