Small intestine villus

Small intestine villus

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Credit: R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL/SCIENCE PHOTO LIBRARY

Caption: Small intestine villus, fluorescence deconvolution micrograph. Fluorescent dyes have been used to highlight cellular structures and proteins: cell nuclei (blue), g-actin (red), f-actin (green). Villi are the functional structures lining the walls of the intestines. The microvilli, the very small filamentous structures that cover the surface of a villus, are seen here (green outer layer). It is the microvilli that absorb nutrients from digested food. Actin, a protein that is a major part of a cell's cytoskeleton, has two main forms: globular actin (g-actin) and filamentous actin (f-actin). The cell nuclei seen here are part of the columnar epithelium that forms the shape of a villus. This tissue sample is from the illeum section of the small intestine.

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Keywords: actin, anatomical, anatomy, biochemical, biochemistry, cell, cell biology, cell nuclei, cell nucleus, cells, cytology, dapi, deconvolved, digestion, digestive system, dye, fluorescence, fluorescence deconvolution, fluorescent, gut, histological, histology, human body, immunofluorescence, immunofluorescent, intestinal, light microscope, marker, micrograph, one, protein, single, small intestine, tissue, villus

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