Fig. 2

Renal pathological study. Immunofluorescence revealed mild mesangial hypercellularity and granular pattern staining in the mesangial area, which were compatible with a diagnosis of lupus nephritis class II. (Periodic acid–Schiff stain; original magnification, 400 \(\times\).) No subepithelial deposition was evident. (Silver stain; original magnification, 400 \(\times\))