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Representative confocal microscopic images showed TRAF6 and CD68 by indirect double immunofluorescence staining in RA synovium. A, original magnification, ×400; B, original magnification ×1,200. (a, TRAF6 (red); b, CD68 (green); c, DAPI (blue); d, merged a, b with c. The white arrows point to intimal and subintimal CD68/TRAF6 double+ cells. DAPI, diamidino-phenyl-indole; RA, rheumatoid arthritis; TRAF6, Tumor necrosis factor receptor-associated factor 6).
