Figure 2.
Kidney biopsy findings. Light microscopy of representative glomerulus stained by (A) hematoxylin-eosin (original magnification, ×100) and (B) periodic acid–Schiff (original magnification, ×200), and of (C) the renal cortex stained by Masson trichrome (original magnification, ×40). (D) Electron microscopy of glomerulus (original magnification, ×1,200), demonstrating extensive effacement of foot processes and absence of electron-dense deposits.