Fig. 1From: Natural autoimmunity in oligoarticular juvenile idiopathic arthritisMeasurements on IgA NAbs. Oligo-JIA patients (n = 70) and Healthy controls (n = 20) were measured for a total serum IgA concentration. Ratios of IgA NAb levels to total IgA concentration were estimated and analyzed for b anti-TNP, c anti-actin, and d anti-F(ab’)2 NAbsBack to article page