Lymphotactin and RANTES/CCL5 werehighly expressed in the pulmonary blood of RA patients.114 Fractalkine levels were high in RA synovialfluid.115 Synovial cells highly expressCXCR2, CXCR3, CCR2, CCR3, and CCR5 in RA patients [144]. The gene discussed is XCL1; the disease is rheumatoid arthritis.