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  • Title: The distribution of Met-enkephalin like immunoreactivity in the brain of Apteronotus leptorhynchus, with emphasis on the electrosensory system.
    Author: Richards S, Maler L.
    Journal: J Chem Neuroanat; 1996 Sep; 11(3):173-90. PubMed ID: 8906459.
    Abstract:
    The distribution of Met-enkephalin-like immunoreactivity in the brain of the electric fish, Apteronotus leptorhynchus was analysed by immunohistochemistry. The majority of Met-enkephalin immunoreactive neurons were found in the hypothalamus. Dense Met-enkephalin immunoreactive fiber plexuses were seen in the hypothalamus and ventral forebrain. In the dorsal telencephalon an olfacto-recipient region (ventral subdivision of the dorsolateral forebrain) was specifically and densely innervated. Regions of the brain known to be involved in electrocommunication also received a substantial innervation by Met-enkephalin-like immunoreactive fibers. This distribution of immunoreactive fibers in the brain of this gymnotiform fish indicates that Met-enkephalin may be generally involved in the regulation of sensory, neuroendocrine and reproductive functions and specifically in the regulation of electrocommunication.
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