Immunologic Factor
opsonin Audio
op·so·nin [ op-suh-nin ]
Subclass of:
Immunoproteins
Etymology:
Greek opsonion = victuals
Definitions related to opsonin:
  • Substance, generally an antibody, that makes a cell or microorgansim more susceptible to the engulfing action of phagocytes.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • (opsonin proteins) Proteins that bind to particles and cells to increase susceptibility to PHAGOCYTOSIS, especially ANTIBODIES bound to EPITOPES that attach to FC RECEPTORS. COMPLEMENT C3B may also participate.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.