title: Endocrine pancreatic tumors: ultrastructure.
abstract: Endocrine pancreatic tumors are frequently multicellular and produce several hormones and peptides. A review of the basic concepts of hormone secretion, pancreatic islet cell composition and ultrastructural make-up of tumors is presented. The importance of correlating ultrastructural, immunocytochemical and biochemical studies of these tumors is emphasized.
mesh_terms: D001078:APUD Cells / Q000648:ultrastructure; D007516:Adenoma, Islet Cell / Q000378:metabolism / Q000648:ultrastructure*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D007515:Islets of Langerhans / Q000378:metabolism / Q000502:physiology / Q000648:ultrastructure; D008854:Microscopy, Electron; D010187:Pancreatic Hormones / Q000096:biosynthesis; D010190:Pancreatic Neoplasms / Q000378:metabolism / Q000648:ultrastructure*
chemical_list: D010187:Pancreatic Hormones