duodenum biopsy from the pathology of small intestine

allergen allergic allergy and autoimmune biology bread carbohydrates cell closeup color cross diagnosis diarrhea dietitian digestive disease disorder duodenum free gastrointestinal gluten gut health healthcare histology horizontal image intestinal intestine kerckring light magnification medical medicine microbiology micrograph microscope microscopic microscopy nutrition pathology people photography science section sensitive sensitivity small submucosa tissue treatment villi wheat