Six weeks later, rats were transferred into individual cages 3 hours prior to i.p. administration of either 25 mg/kg FG-7142 (β-carboline-3-carboxylic acid N-methylamide; Sigma) (n = 12) or 3 mg/kg diazepam (n = 12), already shown to produce anxiogenic or anxiolytic effects in rats at these doses [54], [55], respectively.
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