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. 2012 Sep 27;7(12):1947–1955. doi: 10.2215/CJN.04800511

Figure 1.

Figure 1.

Immunofluorescence staining for IgG subclasses. A representative biopsy case of lupus nephritis, class V (A–D) and primary membranous nephropathy (E–H). Note the positive immunofluorescence staining for IgG1, IgG2, and IgG3 in the subepithelial portion along the glomerular capillary wall and in the mesangium (A–C) and the complete negative for IgG4 in the mesangium (D). A case of primary membranous nephropathy (E–H) shows strong immunofluorescence staining for IgG1 and IgG4 in the subepithelial portion along the glomerular capillary wall but negative in the mesangium.