rheumatoid factor

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English[edit]

English Wikipedia has an article on:
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Noun[edit]

rheumatoid factor (plural rheumatoid factors)

  1. (immunology) An autoantibody directed against the Fc fragment of immunoglobulin G (IgG), often elevated in certain conditions including rheumatoid arthritis and Sjögren's syndrome.
    Synonym: (initialism) RF
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