Pancreas cell, TEM

Pancreas cell, TEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Pancreas cell. Coloured transmission electron micrograph (TEM) of part of an acinar (exocrine) pancreatic cell. Mitochondria (blue) are amongst the cell's endoplasmic reticulum (dark yellow lines). The endoplasmic reticulum controls the cell's secretion of zymogens. Zymogens are inactive precursors of digestive enzymes. The enzymes are secreted in vesicles known as zymogen granules (not seen) and are activated using proteolysis in the small intestine to aid the breakdown of carbohydrates, fats and proteins. Magnification: x11,000 when printed 10 centimetres wide.

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Keywords: acinar cell, anatomical, anatomy, biological, biology, body, cell, coloured, cytological, cytology, digestive, endoplasmic reticulum, enzymatic, enzyme, enzymes, er, exocrine, false-colour, false-coloured, healthy, human body, images, inactive, magnified image, microscopic photos, mitochondria, mitochondrion, normal, nucleus, pancreas, pancreatic, precursor, precursors, secretory, storage, subjects, tem, transmission electron microscope, transport, zymogen, zymogens

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