Fig. 2From: Idiopathic multicentric Castleman disease with Sjögren’s syndrome and secondary membranous nephropathy: a case report and review of the literatureImmunohistochemistry and electron microscopy. A panel of antibodies were used as indicated (a-e). IgG was positive along the glomerular capillary walls and mesangium. IgG4, C1q, C3 and PLA2R were negative. Electron microscopy (f) showed expanded glomerular capillary walls, subepithelial electron-dense deposits and diffuse podocyte foot process fusionBack to article page