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27.8 MB (3.0 MB compressed)
3500 x 2776 pixels
29.7 x 23.6 cm ⏐ 11.7 x 9.3 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Pancreas cell. Coloured scanning electron micrograph (SEM) of an acinar (exocrine) pancreatic cell. Acinar cells produce and excrete digestive enzymes to the small intestine, via the pancreatic ducts. The enzymes are excreted in vesicles known as zymogen granules (red). The enzymes are activated in the small intestine and aid the breakdown of carbohydrates, fats and proteins. The proteins are produced, packaged and secreted by the cell's endoplasmic reticulum and golgi apparatus (yellow strands). The cell's nucleus (brown) is seen at lower left. Magnification: x3500 when printed 10 centimetres wide.
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