Figure 1

Co-localization of C1q and IgG staining in glomeruli in lupus nephritis. A&D. Granular positive staining of C1q by immunofluorescence along the glomerular capillary wall and mesangial area in a patient with lupus nephritis. B&E. Granular positive staining of IgG by immunofluorescence along the glomerular capillary wall and mesangial area in the same section in Figure 1A or D. C&F. C1q and IgG co-localized completely along the glomerular capillary wall and mesangial area, merged in yellow. (Original magnification × 800).