Escher’s Needlepoint |
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Kaelyn Male, Graduate Student, Cell Biology, Duke University
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| The surface of the gut is thrown into small projections (villi) with invaginations (crypts) at their base. The villi help to increase the area of the gut surface for absorption, while the crypts are the home of the stem cells that are responsible for continuous renewal of this epithelium. This is a cross section of villi and crypts in the small intestine of an adult mouse. It is stained to identify cell nuclei (purple), and to show junctions between cells (green). |
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