title: Ultrastructural phosphatase cytochemistry of the intercalary ducts of the parotid and submandibular salivary glands of man.
abstract: Cells of the intercalary ducts showed concentrations of secretory granules adjacent to the luminal plasma membrane. Evidence of thiamine-pyrophosphatase activity was seen in the Golgi apparatus and of acid-phosphatase activity in GERL-like structure, lysosomes and immature secretory granules. Adenosine-triphosphatase reaction-product was present along surfaces of myoepithelial cells and to a lesser extent along contiguous surfaces of duct cells. The findings indicate secretory activity in the intercalary duct cells.
mesh_terms: D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D008854:Microscopy, Electron; D010306:Parotid Gland / Q000201:enzymology / Q000648:ultrastructure*; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism*; D013363:Submandibular Gland / Q000201:enzymology / Q000648:ultrastructure*
chemical_list: D010744:Phosphoric Monoester Hydrolases