title: The endocrine cells of the gastrointestinal tract.
mesh_terms: D002247:Carbon Isotopes; D002395:Catecholamines; D055598:Chemical Phenomena; D002621:Chemistry; D002838:Chromaffin System / Q000166:cytology*; D004396:Coloring Agents; D003594:Cytoplasmic Granules / Q000032:analysis; D004064:Digestive System / Q000166:cytology*; D004798:Enzymes; D005021:Ethylamines; D005453:Fluorescence; D006651:Histocytochemistry; D008854:Microscopy, Electron; D009626:Terminology as Topic
chemical_list: D002247:Carbon Isotopes; D002395:Catecholamines; D004396:Coloring Agents; D004798:Enzymes; D005021:Ethylamines