title: [Ultrastructure of the epithelium of the major pancreatic duct in sheep].
abstract: Light-and electron-microscopic and some histochemical investigations on the epithelium or the ductus pancreaticus major were carried out in sheep. At least six different cell types are recognizable: (1) nondifferentiated duct cells; (2) cells containing apical secretory granules; (3) goblet cells; the mucosubstances of type 2 and 3 are PAS- and Alcian-blue-positive, also reacting wih methenamine silver; (4) ciliated cells, containing a single cilium with the microtubular pattern 9+2; (5) tuft cells with extremely long and wide microvilli and a pear-shaped cell body; (6) migrating cells, mainly lymphocytes and some assumed eosinophils, showing reaction to Mg++-activated ATPase.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism; D000469:Alkaline Phosphatase / Q000378:metabolism; D000818:Animals; D002923:Cilia / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004847:Epithelial Cells; D004848:Epithelium / Q000201:enzymology / Q000648:ultrastructure; D006651:Histocytochemistry; D008854:Microscopy, Electron; D008870:Microtubules / Q000648:ultrastructure; D010183:Pancreatic Ducts / Q000201:enzymology / Q000648:ultrastructure*; D012756:Sheep / Q000033:anatomy & histology*
chemical_list: D000469:Alkaline Phosphatase; D000135:Acid Phosphatase
vernacular_title: Die Feinstruktur des Epithels des Ductus pancreaticus major des Schafes