The morphological analysis of the neural circuit about initial analysis zone of the pheromone information.

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We analyzed that the histological properties of the dendritic form and the histochemical characteristics of the juxtaglomerular cells (JG cells) in the mouse accessory olfactory bulb (AOB), and those adult neurogenesis in the subventricular zone (SVZ) after birth periods. As same as the main olfactory bulb (MOB), JG cells of the AOB express GABA, tyrosine hydrocxylase or calcium-binding proteins. Moreover, SVZ give rise to neurons that migrate to adjacent target zones of AOB. Those findings suggested that the maintenance mechanism of the vomeronasal system is almost the same with main olfactory system, but the neural analysis systems were different each other.