A–D, single optical sections through the cell bodies of representative SB (Cell 1), VSCT (Cell 8), ccDSCT (Cell 10) and dhDSCT (Cell 14) neurons showing the presence of VGLUT1 (blue) and VGLUT2 (green) immunoreactive boutons. The cell body and dendrites of intracellularly labelled cells are in red. A1–A4, B1–B4, C1–C4 and D1–D4, images of dendritic trunks from cells shown in A, B, C and D, respectively (areas encompassed in the boxes) illustrating contacts made by VGLUT1- and VGLUT2-immunoreactive boutons with the cell indicated by arrowheads and arrows, respectively. Note differences in the density of VGLUT1- and VGLUT2-immunoreactive terminals within different regions of the grey matter shown in A–D and especially the high density of VGLUT1 and low density of VGLUT2 within Clarke's column shown in C. Scale bar in A–D, 10 μm.