Olfactory epithelium, alligator (labels) - histology slide

This is a histology slide from an American alligator. Semithin (1 µm) sections stained with toluidin blue. This slide depict zone 3. Bowman glands are numerous. Note how few OSNs (olfactory receptor neurons) are present (arrows). Sc shows a nucleus in the layer of nuclei of the supporting cells. OSN (olfactory receptor neurons) shows the layer of nuclei of the olfactory neurons and bc the layer of basal cells.

bg - Bowman gland, bv - blood vessel, ms - muscle, sc supporting cells.

Image courtesy of:
Hansen, Anne; "Olfactory and solitary chemosensory cells: two different chemosensory systems in the nasal cavity of the American alligator, Alligator mississippiensis"; BMC Neuroscience 2007 8:64 doi:10.1186/1471-2202-8-64.

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