Ankara Universitesi Veteriner Fakultesi Dergisi, cilt.60, sa.1, ss.7-13, 2012 (SCI-Expanded)
The present study was aimed at the light and electron microscopic examination of the epithelium of the porcine oviduct, determination of the histochemical structure of the mucus secreted by epithelial cells, and demonstration of the localization and distribution of endothelial nitric oxide synthase (eNOS) activity during the different stages of the oestrous cycle. The oviducts of 5 healthy adult sows constituted the material of the study. Histochemically, it was observed that, increased glycosaminoglycan (GAG) secretion during the oestrus phase, was in particular stored in the crypts of the isthmus. Electron microscopic examination revealed that, the increased amount of secretory material, which accumulated in secretory cells during the oestrus phase, was stored in two different types of secretory granules. Immunohistochemically, it was ascertained that eNOS was not expressed in either the ampulla or the fimbria during the oestrus and luteal phases, but was expressed in the isthmus only during the oestrus phase.