CCL13 and rheumatoid arthritis: Chemokines P10/CXCL10, Mig/CXCL9, and SDF/CXCL12 wereassociated with RA under hypoxic conditions.113 CC group members MIP3α/CCL20, MCP4/CCL13, MCP1/CCL2, and PARC/CCL18were also elevated in RA patients.