The Results of Ag-Ab Binding Agglutination PROTECTIVE MECHANISM OF BINDING ANTIBODIES Activation of TO ANTIGENS complement Cell lysis units to be ealt with Complement Bacteria Lysis Opsonization Inflammation Disruption of cell by complement/ reactive protein attracts phagocytic and other defensive immune system cells Blood vessel Phagocyte Infecting cell Macrophage Neutralization Antibody-dependent Blocks adhesion of cell-mediated cytotoxicity bacteria and viruses Blocks active Antibodies attached to target cell to mucosa site of toxin cause destruction by non-specific Virus immune system cells Toxin Figure 17.9The Results of Ag-Ab Binding Figure 17.9