Figure 1.

Histopathology of renal biopsy samples. (A) Light-microscopy periodic acid-methenamine silver staining showing segmental endocapillary proliferation and a fibrocellular crescent (original magnification ×400). (B) Light-microscopy periodic acid-Schiff staining showing moderate mesangial proliferation with segmental endocapillary proliferation (original magnification ×400). (C) Immunofluorescence staining for C1q showing global peripheral and segmental mesangial deposits (original magnification ×400).