Practical Application of Columbia Classification for Focal Segmental Glomerulosclerosis

Figure 3

Halo formation. In trichrome stain (a), the pale zone (arrow) is between sclerosis and overlying podocytes. Trichrome stain, ×400. Some areas on the electron micrograph (b) are filled with newly formed thin collagen bundles (arrows). ×5000. (Permitted by the Journal of Korean Society of Pediatric Nephrology [3].)

(a)

(b)