Small intestine

Small intestine

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Credit: STEPHANIE SCHULLER/SCIENCE PHOTO LIBRARY

Caption: Small intestine. Fluorescence confocal light micrograph of a vertical section through the mucosa of the human small intestine, showing crypts of Lieberkuhn (blue and pink). The small intestine runs from the stomach to the large intestine. It is where nutrients are absorbed into the blood. The crypts secrete enzymes into the interior (lumen) of the intestine that help to digest the food. Cell nuclei have been stained with propidium iodide (red) and epithelial cells have been stained with a cytokeratin-specific antibody (blue). Shiga toxin (Stx, green), which was added after the sections were cut, is stained with an Stx-specific antibody. In this section Stx has bound to cells in the lamina propria, the vascular layer of the intestine.

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Keywords: anatomical, anatomy, biological, biology, cell, cells, confocal light micrograph, confocal light microscope, crypt of lieberkuhn, crypts, cytokeratin-specific antibody, digestion, digestive enzymes, digestive system, epithelial cell, fluorescence, fluorescence light micrograph, fluorescent, gland, glands, gut, healthy, histological, histology, human body, immunofluorescence, immunofluorescent, intestinal crypt, lamina propria, light micrograph, light microscope, mucosa, normal, nuclei, nucleus, propidium iodide, section, sectioned, shiga toxin, shiga toxin specific antibody, small intestine, stain, stained, stx, stx-specific antibody, vascular

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