Figure 3From: High CXCR3 expression in synovial mast cells associated with CXCL9 and CXCL10 expression in inflammatory synovial tissues of patients with rheumatoid arthritisWestern blot analysis of Cys–X–Cys receptor (CXCR)1, CXCR2, and CXCR3 protein expression in selected rheumatoid arthritis (RA) and osteoarthritis (OA) synovial tissues. (a) Tissue extracts from RA (n = 8) and from OA patients (n = 4) were analyzed. Numbered lanes correspond to individual patients within Table 1. Staining of the indicated proteins on parallel blots is shown. Equal loading of tissue extracts was controlled by β-actin protein staining. MW indicates a protein from ECL molecular weight markers. (b) Western blot signals on Hyperfilm™ ECL™ after the chemiluminescence reactions were analyzed semiquantitatively using densitometric scanning. Expression is given in arbitrary units and the means ± SD of the RA and OA groups are plotted. Differences between RA and OA groups were assessed statistically using the Student's t-test (*P < 0.05, **P < 0.01).Back to article page