Fig. 3

Network modelling of differentially expressed proteins in the synovial fluid of the AS group versus the a OA, b gout and c RA group. Protein–protein interaction network showing the biological processes affected, including the immune response, platelet degranulation, cell–cell adhesion etc. The colors of the nodes represent proteins with increased (red) or decreased (green) levels in the synovial fluid of the AS group compared to in the other groups. The connection between nodes (solid grey lines) shows either a regulatory role or physical interaction between proteins