Fig. 2.

TH immunocytochemistry demonstrating catecholaminergic cortical afferents. The projection is mainly localized to the RAIC, the limits of which are indicated byinterrupted lines. At high power (data not shown), these areas contain intermeshed fiber-like immunolabeled profiles. Although rostrally (A, level +2.80 of Swanson’s atlas) and caudally (B, level +2.15 of Swanson’s atlas), labeling is denser in the inner laminae (5 and 6), it is also present in other laminae. Medially to the RAIC, nucleus accumbens (Acb) and caudate-putamen (CP) are very densely labeled, corresponding to their abundant catecholaminergic afferents. Scale bar, 200 μm.