Cell Component
microsome Audio
mi·cro·some [ mahy-kruh-sohm ]
Subclass of:
Subcellular Fractions
Definitions related to microsomes:
  • Vesicular fragments of endoplasmic reticulum formed when cells are disrupted.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Artifactual vesicles formed from the endoplasmic reticulum when cells are disrupted. They are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles, and ribosomes. Numerous enzyme activities are associated with the microsomal fraction. (Glick, Glossary of Biochemistry and Molecular Biology, 1990; from Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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