Fig. 1

Mfn2 expression in patients with IgAN. A Representative images of immunohistochemical staining of Mfn2 in glomeruli per group (original magnification × 400). Mfn2 expressed globally or segmentally in the glomeruli were divided into positive group, no/trace Mfn2 staining in glomeruli was defined as negative group. B The location and form of Mfn2 expression in glomeruli. Mfn2 was co-stained with nephrin and Col-IV α5. Mfn2 deposition in two different types, granular deposition or deposition along the GBM at the same time (original magnification × 400). C Representative images of immunohistochemical staining of Mfn2 in DKD, MN and normal control (original magnification × 400)