Fig. 2From: VGLUT1 or VGLUT2 mRNA-positive neurons in spinal trigeminal nucleus provide collateral projections to both the thalamus and the parabrachial nucleus in ratsProjection drawings indicate the sites of TMR injection into the thalamus and FG injection into the PBN in three rats (R4, R7, and R13). a Three different sections from rostral to caudal of the thalamus show the TMR injection sites confined in the VPM, the Po and their vicinities. b FG was injected into the left PBN, with the densest core (blackened areas) covering parts throughout the PBN and the KF. Scale bar 2Â mm (a); 1Â mm (b)Back to article page