FIGURE 13.

Photomicrographs of the premotor cortical area (PMA, a–h) and the rostral somatosensory area (Brodmann area 3a, i‐p) of the tree pangolin. While the PMA lacks a distinct layer 4, the sensory region 3a exhibits a thin layer 4 with a low neuronal density. In both of these cortical areas, precise layer boundaries are not present. Note that the CR (f, n), vGlut2 (g, o), and NFH (h, p) immunostaining is different between the two cortical areas, providing the markers for labeling the transition from motor cortical regions to somatosensory cortical regions. All conventions, scale bar, and abbreviations as in Figure 10