CD4 and rheumatoid arthritis: Flow cytometry of intracellular and secreted cytokines from PBMCIncreased frequency of CD4+IL-17+ cells and CD4+INFγ+ cells in RA patients in remission, compared to active RA or to controls.FNγ production lower in patients with active disease, compared to controls.No significant changes in Th17 cells in all pooled RA, compared to controls.