Membranous glomerulonephritis is principally characterized by
a diffuse glomerular basement membrane thickening. Subepithelial
spikes are seen when biopsies are evaluated with silver stains.
Immunofluorescence microscopy demonstrates a diffuse granular deposition
of immunoglobulins and complement in the glomerular capillary
basement membranes. Electron microscopy shows regularly spaced subepithelial
electron dense deposits
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