Fig. 1From: Stress-induced microglial activation occurs through β-adrenergic receptor: noradrenaline as a key neurotransmitter in microglial activationa A schematic depiction of the acute RS protocol. Fischer rats were subjected to acute RS for 1–4 h. b Plasma corticosterone levels (ng/mL) under control conditions and acute RS. The asterisks indicate the statistical difference between acute RS rats and control rats (*p < 0.05, **p < 0.01, n = 4)Back to article page