Fig. 2

A-G Under routine IF microscopy, the deposits were stained positively for IgA (3+), IgG (2+), IgM (2+), C3 (3+), C1q (2+), κ (+) and λ (+). H Electron microscopy (original magnification, × 3000) displayed massive subendothelial and mesangial electron-dense deposits and minor subepithelial electron-dense deposits, appearing in obscure fibrillary structures. I Under electron micrograph at high magnification (× 25,000), these fibrils were generally short, randomly arranged, and measured between 12 and 14 nm in diameter