Figure 4.

Longitudinal synovial fluid cytokine concentrations (pg/ml) in patients with early inflammatory arthritis. Results are shown for patients with early inflammatory arthritis who develop rheumatoid arthritis (closed circles) and non-rheumatoid persistent inflammatory arthritis (open circles) for (a) IL-2, (b) IL-4 and (c) IFN-γ.

Raza et al. Arthritis Research & Therapy 2005 7:R784-R795   doi:10.1186/ar1733
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