Fig. 3From: IgG4:IgG RNA ratio differentiates active disease from remission in granulomatosis with polyangiitis: a new disease activity marker? A cross-sectional and longitudinal studyLongitudinal pilot. Longitudinal data in a scatter dot plot portraying the percentage of immunoglobulin G subtype 4 (IgG4) from total IgG RNA molecules in (a) patients who showed no or minor changes in Birmingham Vasculitis Activity Score (BVAS) and (b) patients who showed a decrease of 3 points or more in BVAS after follow-upBack to article page