Expression of phenotypic and vascular markers in synovial tissue of RA patients with self-limiting, persistent non-erosive or persistent erosive disease.

Values are presented as median (interquartile range). A Kruskal-Wallis test was used to compare the different diagnostic groups; a P-value of <0.05 was considered statistically significant (bold). CD3 refers to T cells; CD55– fibroblast-like synoviocytes; CD68– macrophages; CD22– B cells; CD138– plasma cells; tryptase – mast cells. L = lining; SL = sublining; vWF = von Willebrand factor; VEGF = vascular endothelial growth factor; VCAM-1 = vascular cell adhesion molecule-1. IOD = integrated optical density.