Jejunal biopsy.
D000012:Abetalipoproteinemia / Q000473:pathology; D000686:Amyloidosis / Q000473:pathology; D001706:Biopsy / Q000009:adverse effects; D002446:Celiac Disease / Q000473:pathology; D004751:Enteritis / Q000473:pathology; D006471:Gastrointestinal Hemorrhage / Q000453:epidemiology; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis*; D007411:Intestinal Diseases, Parasitic / Q000473:pathology; D007416:Intestinal Perforation / Q000453:epidemiology; D007441:Intubation, Gastrointestinal; D007583:Jejunum / Q000473:pathology*; D008200:Lymphangiectasis / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D008286:Malabsorption Syndromes / Q000175:diagnosis*; D008722:Methods; D011832:Radiation Injuries / Q000473:pathology; D013182:Sprue, Tropical / Q000473:pathology; D008061:Whipple Disease / Q000473:pathology