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Lupus Nephritis—Mesangial Proliferative (Class II)

The top image shows mesangial deposition of IgM (immunofluorescence with anti-IgM, original magnification × 400). In the bottom image, mesangial dense immune complex deposits and reticular aggregates within endothelial cell cytoplasm are seen on transmission electron microscopy ( × 8000).

Images provided by Agnes Fogo, MD and the American Journal of Kidney Disease’s Atlas of Renal Pathology (see