Fig. 2From: Enhanced BMP-2/BMP-4 ratio in patients with peripheral spondyloarthritis and in cytokine- and stretch-stimulated mouse chondrocytesCorrelations between BMP-2 levels or BMP-2/BMP-4 ratios and inflammatory markers for SpA patients. CRP concentration (c) was determined in n = 34 SpA patients and OPG, TNF-α, IL-6, and IL-17 in n = 21 patients (a, b, d–f). Correlations were examined relative to BMP-2 levels (a, c) or to the BMP-2/BMP-4 ratios (b, d–f). Symbols represent individual data points; the plain line represents the linear regressionBack to article page