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Comparison of the expression levels in peripheral blood mononuclear cells (PBMCs) of the key DNA double strands break repair genes (A) RAD51B, (B) BRCA1, (C) BRCA2, (D) RAD51, (E) ATM, (F) PRKDC, and (G) γ -H2AX) between the controls (green) n = 45 and patients with rheumatoid arthritis (blue) n = 45. Data are presented as medians. Differences between the groups were analyzed using the Mann–Whitney rank sum test analysis, * means p < 0.05.
