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Coloured SEM of lysosomes in pancreas cell

Coloured SEM of lysosomes in pancreas cell

G460/0076

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Credit

PROFESSORS P. MOTTA & T. NAGURO / SCIENCE PHOTO LIBRARY PROFESSORS P. MOTTA & T. NAGURO / SCIENCE PHOTO LIBRARY

Caption

Lysosomes. Coloured high resolution scanning electron micrograph (SEM) of two lysosomes in a pancreatic acinar cell. Lysosomes (rounded, centre) are small spherical vesicles. They are bound by a single membrane (clearest on lower lysosome) and contain a concentrated mixture of digestive enzymes. These enzymes are used to destroy redundant cell organelles or damaged molecules from within or outside the cell. The organelle or molecule becomes enclosed in a membrane of the lysosome and is digested. Material probably representing partially digested cell organelles can be seen in each lysosome.

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