Histological and histochemical studies of all salivary glands of baladi goat ) capra hircus ) with reference to the ultrastructure and immunohistochemistry of the major salivary glandsonly

The current study was carried out on thirteen heads (6 males and 7 female) from apparently healthy adult baladi goat, aged from 2 to 3 years. Both the major and minor salivary glands were collected. Histological and histochemical studies were applied for In the baladi goat, the salivary glands consisted of major (parotid, mandibular, sublingual) glands and minor (labial, buccal, palatine and lingual) glands. The sublingual glands consisted of mono- and poly- stomatic glands. The buccal glands were formed The histological studies revealed that both the major and minor salivary glands were formed from parenchymal cells and stroma of C.T. The parenchyma consisted of secretory endpieces and ductal segment. The duct system was well-developed in the major salivThe seromucous tubules consisted of mucous tubules capped with serous demilunar cells. The serous cells showed negative reaction for both PAS and AB stains while the mucous cells revealed numerous mucinogen granules of intense reaction for both PAS and ABEnzymatic histochemical reactions for both acid phosphatase and succinic dehydrogenase enzymes activities were applied. Dense reaction products for acid phosphatase were observed in the serous granules as well as the peripheral inclusions that were existeImmunohistochemical studies of the major glands showed, immunopositive reaction for carbonic anhydrase II were observed in the serous and ductal cells but, the mucous cells showed negative reaction. The serous cells in the parotid salivary glands, the manTransmission electron microscopic studies of the serous cells revealed the presence of numerous serous granules, intercellular canaliculi and microvilli projecting into the lumen. The mucous cells contained many mucinogen granules, few short microvilli anScanning electron microscopic observation revealed that the intercalated ducts were covered by myoepithelial cells which, unlike the large stellate cells that surrounded the secretory endpieces, were spindle-shaped with few cytoplasmic processes. The myoeThere were no significant differences in the structures of all constituents either between males and females or regarding the ages of 2 or 3 years for the studied animals.