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Immuno cytochemical localization of vasotocin and isotocin in the preoptico hypophyseal neuro secretory system of teleosts



Immuno cytochemical localization of vasotocin and isotocin in the preoptico hypophyseal neuro secretory system of teleosts



General and Comparative Endocrinology 32(4): 371-375



Using the unlabeled antibody peroxidase-antiperoxidase (PAP) technique at the light microscopic level, it has been shown that in the preopticohypophysial neurosecretory system of teleosts [Carassius auratus, Pleuronectes platessa, Salmo gairdneri], vasotocin and isotocin are synthesized in separate neurons. In the preoptic nuclei, the perikarya of these 2 kinds of neurosecretory neurons are not located preferentially. The 2 types of neurosecretory perikarya are the origin of separate vasotocinergic and isotocinergic axons, respectively. The teleost neurohypophysis contains separate vasotocinergic and isotocinergic nerve fibers. The coarse ventricular dendrites of both types of neuron contain hormones.

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Accession: 005623477

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PMID: 332586



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