Frequency of CD4+IL-17+ T cells and CD4+IL-22+ T cells and coexpression of chemokine receptor 6 in synovial fluid and peripheral blood of psoriatic arthritis and rheumatoid arthritis patients. Frequency of CD4+IL-17+ T cells and CD4+IL-22+ T cells in psoriatic arthritis (PsA) synovial fluid (SF) and peripheral blood (PB) (A) and (B) and of CD4+IL-17+ and CD4+IL-22+ T cells in PsA and rheumatoid arthritis (RA) SF (C) and (D). Percentages of CD4+IL-17+ T-cell-expressing chemokine receptor 6 (CCR6) in PB and SF of patients with PsA (E). * p<0.05, **p<0.01, ***p<0.001.
Benham et al. Arthritis Research & Therapy 2013 15:R136 doi:10.1186/ar4317