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. 2016 Mar 2;41(5):415–425. doi: 10.1093/chemse/bjw016

Figure 5.

Figure 5.

Sections from the AON. (A) Low magnification picture (scale bar = 1mm). The OB is still present on the medial (left) side of the olfactory peduncle. The LOT is visible on the right (lateral) side. AONpP fills the remainder of the region on the lateral side. OV = olfactory ventricle. Asterisk = missing portion. (B) Nissl (blue)/myelin (black) staining. Superficial at top, the OV at bottom. The top of the section contains myelinated fibers and collaterals from the LOT. They thin toward the ventral side, indicating the beginning the Layer 1 (1A) of the AONpP. Under the cell poor Layer 1 is the cellular region, Layer 2. Beneath Layer 2 is a second large region of fibers that includes the axons of AON projection neurons and afferents from higher brain centers. Within Layer 1 AONpE can also be seen as a thin band of cells at the left side of the figure. Arrowhead = area where AOB is found in more rostral sections. Scale bar = 200 µm. (C, D) Camera lucida drawings of Golgi-stained cells. Scale bars = 50 µm. (C) AONpE cells. These characteristic cells have only a few apically directed dendrites arising from the cell body. (D) AONpP pyramidal cells. There neurons have a single apically directed dendrite (at top) and several basilar ones.