Fig. 2

Kidney biopsy. a Light microscopy shows an area of segmental glomerular scarring with a foam cell and adhesion to Bowman’s capsule (upper right) away from the glomerular hilum. (Periodic acid–Schiff stain, 400× magnification). b Immunofluorescence shows mesangial reactivity of moderate intensity in two glomeruli. (200× magnification). c This electron microscopic image shows diffuse epithelial foot effacement over the basement membrane of three glomerular capillary loops. There is also podocytic swelling with focal microvillous transformation. (8,000× magnification)