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. Author manuscript; available in PMC: 2008 Sep 29.
Published in final edited form as: J Comp Neurol. 2006 Feb 20;494(6):863–875. doi: 10.1002/cne.20852

Figure 1.

Figure 1

Light microscopic images of rat coronal brain sections. Panels A and B show injections of FG into the NAc or PFC. The corresponding retrograde transport of FG to the VTA is shown in panels C and D. Inserts illustrate the transport of FG into soma and dendrites (arrows indicate the same cells). Panels E-G illustrate peroxidase labeling for VAChT in the VTA and adjacent interpeduncular nucleus (IP). Although VAChT+ fibers are notably denser in the IP than in the VTA, VAChT axons in the latter structure viewed at higher magnification are markedly beaded and appear to form chains of varicosities (small arrows in G). Abbreviations: ac, anterior commissure; cc, corpus callosum; fm, forceps minor; fr, fasciculus retroflexus; LV, lateral ventricle; ml, medial lemniscus; mp, mammillary peduncle; rs, rhinal sulcus. Scale bar represents 1 mm in A-B, 500 μm in C-D, 62.5 in inserts, 125 μm in E-F, and 31.25 μm in G.