title: Mucosal biopsy of the gastrointestinal tract.
mesh_terms: D000361:Agammaglobulinemia / Q000473:pathology; D000818:Animals; D001284:Atrophy; D001706:Biopsy; D003092:Colitis / Q000473:pathology; D003093:Colitis, Ulcerative / Q000473:pathology; D003106:Colon / Q000098:blood supply; D003424:Crohn Disease / Q000473:pathology; D004378:Duodenal Diseases / Q000473:pathology; D005753:Gastric Mucosa / Q000166:cytology / Q000473:pathology*; D005756:Gastritis / Q000473:pathology; D005767:Gastrointestinal Diseases / Q000473:pathology*; D005873:Giardiasis / Q000473:pathology; D007411:Intestinal Diseases, Parasitic / Q000473:pathology; D007413:Intestinal Mucosa / Q000166:cytology / Q000473:pathology*; D007414:Intestinal Neoplasms / Q000473:pathology; D007421:Intestine, Small / Q000166:cytology; D007511:Ischemia / Q000473:pathology; D007583:Jejunum / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D008286:Malabsorption Syndromes / Q000473:pathology; D011504:Protein-Losing Enteropathies / Q000473:pathology; D013274:Stomach Neoplasms / Q000473:pathology