[The current progress in the methodology for the study of the diseases of small intestine (author's transl)].
D000818:Animals; D001706:Biopsy; D004594:Electrophysiology; D004724:Endoscopy; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis / Q000503:physiopathology; D007421:Intestine, Small / Q000503:physiopathology; D008722:Methods; D008854:Microscopy, Electron