The Complement System kills microbes via the Membrane Aftack Complex(MAC). C5b,67 complexes C8 binds to the complex C9 molecules bind to 10-16 molecules of C9 C5b binds C6 and C7 bind to membrane and inserts into the complex bind to fomm a pore via C7 the cell membrane and polymertze in the membrane C5.67 Pathogen 1997 Current Biology Lfd./Garland Publishing.Inc. Membrane lesions-end on(rings) Membrane lesions-side on (tubes) Schematic representation of the membrane-atiack complex pore 3nm 10rm The Complement System kills microbes via the Membrane Attack Complex (MAC)