Figure 2.

Images of representative Nissl-stained rostrocaudal sections throughout the tree shrew striatum. (A) Rostral striatum. Note the clear separation of the caudate (C) and putamen (P) by the internal capsule (ic). (B) Mid striatum. The internal capsule (ic) is still present. The corpus callosum (cc) and anterior commissure (ac) are well formed and delineate the extent of the striatum. (C) Caudal striatum. The caudate (C) and putamen (P) are separated by the internal capsule (ic). The anterior commissure is no longer visible and the globus pallidus (GP) is now present. Coordinates indicate the orientation of the sections in the figure (D, dorsal; L, lateral). Scale bars: 1 mm in (A–C).