Fig. 2
From: PLA2R-positive membranous nephropathy in IgG4-related disease
Kidney biopsy findings. Light microscopy showed spike appearances in the glomerular base membrane on periodic acid methenamine-silver staining, × 600. Immunofluorescence microscopy was used for IgG heavy chain, PLA2R, and THSD7A, and double immunofluorescence microscopy for IgG heavy chain subclasses IgG1, IgG2, IgG3, IgG4, and PLA2R, original magnification × 400 (Green: IgG heavy chain subclass, Red: PLA2R)