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27.0 MB (3.3 MB compressed)
3072 x 3072 pixels
25.9 x 25.9 cm ⏐ 10.2 x 10.2 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Goblet cell. Coloured transmission electron micrograph (TEM) of a section through a goblet cell in the lining of the small intestine, part of the digestive tract. Most of its mucus (brown) has been released. A goblet cell secretes the mucus to protect the lining of the intestine. The brush- like surface of the small intestine consists of microvilli (yellow) which increase the surface area available for absorption of nutrients such as lipids, proteins and fat-soluble vitamins. The microvilli have a rapid turnover of 3-4 days. Magnification: x9000 when printed 10 centimetres wide.
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