Fig. 5From: C4 nephritic factor in patients with immune-complex-mediated membranoproliferative glomerulonephritis and C3-glomerulopathySchematic representation of the complement pathways with steps of action of C3NeF and C4NeF, highlighting all complement investigations performed in this study. Complement parameters investigated in this study are underlined. Complement regulators are shown in red triangles. Complement autoantibodies are shown in blue. Complement activation products are shown by asterisks. Abbreviations: DAF - decay-accelerating factor; CR1 - complement receptor type 1; C4BP - C4b-binding protein; MCP - membrane cofactor proteinBack to article page