STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Large intestine. Coloured transmission electron micrograph (TEM) of a section through the large intestine showing the microvilli (red). The hair- like microvilli are projections on the surface of columnar absorptive cells. The microvilli increase the surface area of the large intestine, the main section of which is the colon. This allows water and any remaining nutrients to be absorbed from the already digested food. Magnification unknown.
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