STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Intestinal microvilli. Coloured scanning electron micrograph (SEM) of microvilli from the duodenum, the first part of the small intestine. These tiny structures form a dense brush-like covering on the absorptive surfaces of the enterocyte cells. These cells absorb nutrients from digested food through these microvilli. There are billions of microvilli in a small intestine. Magnification: x14,000 when printed 10cm wide.
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