Fig. 2. Real-time polymerase chain reaction analysis of CCL2, CCL4, CCR5, c-Fos, and c-Jun mRNA levels in synovial tissue. The relative mRNA expression levels were normalized to the levels of GAPDH. The significance of differences was determined using Student's t-test. ^*p<0.05, n=6 (open bars healthy controls, coarse stippling bars rheumatoid arthritis patients). mRNA, messenger RNA.