Subnuclear Organization of the Preoptic Nucleus in the Toad, Bufo japonicus(Endocrinology)

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The preoptic nucleus (PON) is an important neuroendocrine center in the amphibian brain. The subnuclear organization of this locus was examined by a cytoarchitectonic analysis and application of an immunohistochemical technique in the toad, Bufo japonicus. The PON can be divided into seven subnuclei : anterior part, dorsal and ventral periventricular parts, dorsal and ventral magnocellular parts, suprachiasmatic part, and posterior part. Immunoreactive argininevasotocin was localized in neuronal perikarya and processes in the dorsal and ventral magnocellular parts and the suprachiasmatic part. Immunoreactive luteinizing hormone-releasing hormone was found in neuronal perikarya scattered in the extrahypothalamic nuclei, the nucleus of the diagonal band of Broca and the medial septal nucleus.
社団法人日本動物学会の論文