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Kidney biopsy with lupus podocytopathy. (A) Light microscopy shows normal glomeruli. Immunofluorescence microscopy, not shown, is without deposits (negative for IgG, IgA, IgM, C3, and C1q). Original magnification. (B) Electron microscopy reveals complete foot process effacement (sample from paraffin with artifact). Original magnification. Courtesy of Teresa Pereda (Department of Pathology of Hospital Costa del Sol Marbella).
