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The hallmark of rheumatoid arthritis (RA) is erosive arthritis, an autoimmune disease that ultimately results in joint deformities and functional loss. It can also be complicated by pulmonary disease, cardiovascular disease, malignant tumors, and depression. The etiology of RA remains unclear. However, infections have been suggested as environmental triggers in as many as 20% of patients. Due to its perplexing etiology, a more detailed exploration of the pathogenesis of RA has been presented in an article titled "Altered antibod... more