Figure 3From: B-Cell Subsets in the Joint Compartments of Seropositive and Seronegative Rheumatoid Arthritis (RA) and No-RA Arthritides Express Memory Markers and ZAP70 and Characterize the Aggregate Pattern Irrespectively of the Autoantibody StatusMean cytokine levels in PB and SF of RA patients. The plasma and SF levels of MCP-1, IL-8, IL-1 β, TNF-α and IL-6 in RA (AB+ and AB−) and no-RA patients were assessed using a bead-based assay kit.Back to article page