Fig. 1

Findings of the first biopsy of a transplanted kidney at our hospital: light microscopy using periodic-acid Schiff (PAS), conventional fluorescence microscopy (IgG), and electron microscopy (EM). Three glomeruli showed collapse, but no segmental sclerosis was observed in light microscopy (A), consistent with findings of minimal change disease. Conventional immunofluorescence staining revealed no IgG deposition (B). Electron microscopy (EM) showed diffuse foot process effacement (C; low magnification) and no dense depositions were seen anywhere (D; high magnification)