Figure 11

TH-IR axons passed through ICG without apparent innervation. (a) Maximal projection image showed TH-IR axons mainly passing through a group of TH-IR neurons. (a’) Single optical section of the corresponding image in (a). (b-e) Partial projection image of different ICG represented the pattern of TH-IR axons passing though rather than directly innervating the TH-IR neurons. Arrows indicate TH-IR axons passing by TH-IR neurons. Zoom 1X (a,a’), Zoom 2X (b-e). Scale bar: 20 μm.