Fig. 1From: Endogenous stimulation is responsible for the high frequency of IL-17A-producing neutrophils in patients with rheumatoid arthritisSerum IL-17A levels but not Th17 cell numbers are increased in RA patients. a Serum IL-17A was measured by CBA in patients (RA n = 106) and healthy controls (HC n = 56), p = 0.03. b ex vivo Th17 cells were identified by flow cytometry from the PBMC fraction, p = 0.08. c Three representative dot plots of patients with RA and HCs show IL-17A-producing CD4 T cells. A nonparametric Mann–Whitney test was performedBack to article page