Autoimmune markers are specific antibodies or proteins produced by the immune system that indicate the presence of autoimmune diseases, where the body mistakenly attacks its own tissues. These markers are crucial in diagnosing conditions like rheumatoid arthritis or lupus, guiding treatment decisions, and monitoring disease progression. For instance, the presence of anti-nuclear antibodies (ANA) is commonly associated with systemic lupus erythematosus, highlighting the importance of early detection and management.
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