Fig. 1

Direct immunofluorescence reaction with fluorescein isothiocyanate (FITC)-labeled anti-IgG (a), direct immunofluorescence reaction with FITC-labeled anti-IgM (b), direct immunofluorescence reaction with FITC-labeled complement 3 (c), direct immunofluorescence reaction with FITC-labeled anti-C1q (d), thrombosed capillary loops (e), characteristic “onion leaf” lesion in the smaller arterioles (f), and electron microscopic examination: subendothelial located electron-dense deposits in the glomerular loop (g)