Fig. 2From: Activation of CamKIIα expressing neurons on ventrolateral periaqueductal gray improves behavioral hypersensitivity and thalamic discharge in a trigeminal neuralgia rat modelExpression of viral vector in vlPAG. a Schematic and immunofluorescent diagram showing the location of virus injection and optic stimulation in vlPAG. b Schematic and cresyl violet stained diagram showing the location of electrode in VPM thalamus. c Immunofluorescence reveals the optogenetic viral expression in the vlPAG of TN/ChR2(above) and TN/EYFP animals (below); DAPI (a, d), EYFP (b, e), Merge (c, f). Scale bar = 100 μm in all imagesBack to article page