DCX+ cellular profiles in the middle part of the forebrain in a 2 months-old Chinese tree shrew. Panels (A,B) are low magnification views of immunolabeled hemispherical sections at the levels passing the rostral end of the hippocampus (Hipp) and the lateral geniculate nucleus (LGN), respectively, with framed areas enlarged as panels (C–H). No labeled cells are seen in the parietal neocortex (PC) and the majority of the temporal neocortex (TC) (C,D), while a few cells could be detected in the temporal cortex surrounding the rhinal fissure (RF) (D, pointed by arrows). In contrast, a large number of labeled cells occurs in the piriform cortex (Pir) over layer II (D–F). Abundant labeling is present in the amygdala (Amyg) near its border to the white matter of the adjoining piriform and temporal cortices (F). DCX+ neurons and processes are distinctly present at the subventricular zone (SVZ) next to the lateral ventricle (LV) and in the subgranular zone of the dentate gyrus (DG) (G,H). Additional abbreviations: Th, thalamus; LF, lateral fissure; CA1, Ammons’ horn CA1 sector; SC, superior colliculus; RN, red nucleus; SN, substantia nigra; WM, white matter; PLN, paralaminar nucleus; ML, molecular layer; GCL, granule cell layer; Hi, hilus. I, II…VI: cortical layers. Scale bars are as indicated.