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miR-23 is downregulated and CXCL12 is upregulated in RA. miR-23 expression levels in (A) serum, (B) synovial tissues and (C) FLS cells. CXCL12 expression levels in (D) serum, (E) synovial tissues and (F) FLS cells. *P<0.05. miR, microRNA; CXCL12, chemokine C-X-C motif ligand 12; RA, rheumatoid arthritis; LPS, lipopolysaccharide; FLS, fibroblast-like synoviocytes.
