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March 22, 2013
Light microscope image of a 0.5 micron section cut through the acinar portion of mammalian pancreatic tissue. The acinar cells are typical protein-secreting cells. The inactive precursors of digestive enzymes are stored in the zymogen granules. These are easy to see as numerous, dark, round structures in each acinar cell. Note the dividing acinar cell on the upper right side of the image. Between the pancreatic acinar tissue, are capillaries, many of which contain red blood cells. ZEISS Standard RA LM Credit: Louisa Howard

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