609795.fig.003a
(a)
609795.fig.003b
(b)
609795.fig.003c
(c)
609795.fig.003d
(d)
Figure 3: IgG4-related tubulointerstitial nephritis with IgA nephropathy. (a) Periodic acid-Schiff (PAS) staining reveals severe tubulointerstitial nephritis (PAS x100). Regional lesion distribution is evident. (b) Segmental mesangial proliferation is seen (PAS 400). (c) Immunofluorescence staining for IgA reveals bright mesangial deposits ( 400). (d) Immunofluorescence staining for C3 reveals weak mesangial staining for C3 ( 400).