Figure 4.
Photomicrographs of adjacent coronal sections of the striatum showing the labeled terminals after dual tracer injections into different PFC areas. a, b, Labeled striatal fibers after injections into dACC and OFC (area 24b, a; area 13, b). Scale bar, 500 μm. c, d, Labeled striatal fibers after injections into vmPFC and OFC (area 14, c; area 13, d). Scale bar, 500 μm. e, f, Labeled striatal fibers after injections into dACC and OFC (area 32, e; area 11, f). The scale bar is shown in c. White outline on a, c, and e indicate the focal projection from areas 24b, 14, and 32, respectively. Note the converging and interdigitation of the labeled clusters. The white arrowheads indicate the correspondent blood vessels in adjacent sections.