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phago- +‎ -some


phagosome (plural phagosomes)

  1. A membrane-bound vacuole within a cell containing foreign material captured by phagocytosis.
    • 1959 March 25, Werner Straus, “Rapid Cytochemical Identification of Phagosomes in Various Tissues of the Rat and their Differentiation from Mitochondria by the Peroxidase Method”, in Journal of Cell Biology, volume 5, number 2, page 193:
      Granules characterized by their ability to segregate foreign proteins (phagosomes) were identified in the cells of many rat organs after intravenous administration of horseradish peroxidase, by using the conventional test with benzidine for the histochemical detection of peroxidase.

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