Fig. 2

Pathological findings of the first protocol biopsy (first biopsy). a-1 Light microscopy findings. Glomerulus showed very mild mesangial matrix expansion and segmental proliferation at the vascular pole (Original magnification, ×200). a-2 High magnification of black-boxed area in a-1. The arrow shows segmental proliferation (original magnification, ×400). b Glomerular immunofluorescent staining (original magnification, ×100). b-1 Global mesangial granular deposits of C3c. b-2 No apparent IgG deposition was observed. b-3 No apparent IgA deposition was observed. b-4 No apparent IgM deposition was observed. b-5 No apparent C1q deposition was observed