title: Progress in the methods of endoscopic diagnosis in gastroenterology.
mesh_terms: D001706:Biopsy; D004396:Coloring Agents; D019723:Endoscopes; D004724:Endoscopy / Q000266:history / Q000639:trends*; D004945:Esophagoscopy / Q000379:methods; D005336:Fiber Optic Technology / Q000295:instrumentation; D005762:Gastroenterology / Q000639:trends*; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D005773:Gastroscopy / Q000379:methods; D006470:Hemorrhage / Q000175:diagnosis; D006801:Humans; D006863:Hydrogen-Ion Concentration
chemical_list: D004396:Coloring Agents