Abstract
Localization of NO-ergic elements in oral lobes, labia, and esophagus in the bivalve mollusc, mussel Crenomytilus grayanus was studied using histochemical technique [1] for detection of NADPH-diaphorase (EC 1.6.99.1). The NO-producing elements were revealed in all studied parts of the digestive system. NADPH-diaphorase was found in nerve and secretory cells as well as in nerve plexuses. Numerous NO-ergic nerve cells were observed in the basal part of epithelium of labia and of the initial part of esophagus as well as in the subepithelial area of these organs. In the middle and posterior parts of esophagus, only subepithelially located NO-ergic nerve cell are present. Basiepithelial NO-producing secretory cells are found in all the parts, but most of these cells are observed in labia and the initial part of esophagus. Subepithelial secretory cells labeled with diformazan granules are spread from the folded surface of oral lobes to the initial part of esophagus; no such cells were found on the smooth surface of the lobes. The deposit labeled basi- and subepithelial nerve plexuses in all studied organs except for oral lobes. These plexuses are the most developed in labia and the initial part of esophagus of the studied mollusc.
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Pimenova, E.P., Varaksin, A.A. Localization of NO-Ergic Structures in Oral Lobes, Labia, and Esophagus of the Bivalve Mollusc Crenomytilus grayanus . Journal of Evolutionary Biochemistry and Physiology 39, 593–599 (2003). https://doi.org/10.1023/B:JOEY.0000015968.12150.a9
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DOI: https://doi.org/10.1023/B:JOEY.0000015968.12150.a9