Fig. 3From: Distinct phenotypic subpopulations of circulating CD4+CXCR5+ follicular helper T cells in children with active IgA vasculitisTreatment-induced alterations of different subpopulations of Tfh cells and plasma IL-21. After proper treatment, disease remission was achieved in 15 patients. The frequency of the indicated Tfh cells and plasma IL-21 levels were compared between the active and remission stages of the diseaseBack to article page