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Schematic drawings of the parasagittal section of the nasal cavity in the rat. aob: accessory olfactory bulb, et: endoturbinates, in: incisor, mob: main olfactory bulb, ns: nasal septum, so: septal olfactory organ of Masera, vno: vomeronasal organ. An arrow indicates the opening of the vomeronasal organ. The shadow represents the distribution of the olfactory epithelium.
