autoantibody

An autoantibody is an antibody (a type of protein) manufactured by the immune system that is directed against one or more of the individual's own proteins. Many autoimmune diseases in humans, most notably lupus erythematosus, are caused by such autoantibodies.
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Autoantibody /au·to·an·ti·body/ an antibody formed in response to, and reacting against, an antigenic constituent of one's own tissues. [more]Autoantibody - Community and Resources

Noun
1. an antibody acting against tissues of the organism that produces it
(hypernym) antibody
(hyponym) rheumatoid factor

noun
antibody formed to attack the body's own cells

autoantibody
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