Fig. 2
From: Horseshoe kidney with PLA2R-positive membranous nephropathy
A Light micrograph (PASM stain, ×400): The arrow shows basement membrane thickening, nail structure formation; B Immunofluorescent stain (× 200): immunoglobulin G4 deposition (3+) in fine granular deposits along the capillary loops. C Immunofluorescent stain (× 200): PLA2R (+). (D) Electron microscope (× 3000): The arrow shows the electron dense substance was deposited in the subepithelial and basement membranes of glomerular capillary loops, some spikes