Figure 3From: Levels of gastrin-releasing peptide and substance P in synovial fluid and serum correlate with levels of cytokines in rheumatoid arthritisScatter plot, with linear regression line, showing correlation between BN/GRP and IL-6 in synovial fluid. Spearman's rank correlation coefficient (rs = 0.38; P < 0.05) measured, using RIA and ELISA, in synovial fluid from patients with long-standing RA. BN/GRP, bombesin/gastrin-releasing peptide; RA, rheumatoid arthritis.Back to article page