Fig. 1.
a Periodic acid Schiff staining of kidney sections from the patient. Mesangial proliferation and expansion with a lobular appearance are observed (original magnification, × 400). b Periodic acid-methenamine-silver staining of kidney sections from the patient. Double contours of the glomerular basement membrane are present (original magnification, × 400). c Periodic acid Schiff staining of kidney sections from the patient. The crescent formation is observed at the bottom of the glomerulus (original magnification, × 200). d Periodic acid Schiff staining of kidney sections from the patient. Renal tubules showed severe atrophy (original magnification, × 200)