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3250 x 3250 pixels
27.4 x 27.4 cm ⏐ 10.8 x 10.8 in (300dpi)
R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY
Small intestine villi, fluorescence deconvolution micrograph. Fluorescent dyes have been used to highlight cellular structures and proteins: cell nuclei (blue), g-actin (red and pink), f-actin (green and yellow). This is a cross-section through several villi, the functional structures lining the walls of the intestines. The cell nuclei seen here are part of the columnar epithelium that forms the shape of a villus, and from this angle they form a ring around the central part (red) of each villus. 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). This tissue sample is from the illeum section of the small intestine.
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