Complement system chemical defense system that kills microorganisms named the complement system because of the way it works together with the immune system are a series of proteins, cl, C2, etc C5-C9-form a large multi-protein complex MAC-membrane-attack complex MAC-inserts itself into the membrane of invading microorganisms creates a pore disrupts control of ion balance cells burstComplement System - chemical defense system that kills microorganisms - named the complement system because of the way it works together with the immune system - are a series of proteins, C1, C2 , etc - C5-C9 - form a large multi-protein complex - MAC - membrane-attack complex MAC - inserts itself into the membrane of invading microorganisms - creates a pore - disrupts control of ion balance - cells burst