Fig. 1From: A case of IgG4-related interstitial nephritis with ureteral obstruction: case report and literature reviewA HE staining. Extruded and deformed fibrous tissue of ureteral tissue (× 100). B Immunohistochemical staining. A small amount of IgG-positive plasma cells in the ureter (× 200). C Immunohistochemical staining. A small amount of IgG4-positive plasma cells in the ureter (× 200)Back to article page