CLASSICAL PATHWAY LECTIN PATHWAY ALTERNATIVE PATHWAY Antigen antibody complex Mannan-binding lectin binds Pathogen surfaoes mannose on pathogen surfaoe 2 MBLMASP Effector C3 convertase Actions of Complement Termina- complement components Co Csa C5b C3b C7 3m Binds to complement Membrane-attack reoeptors on phagocytes complex, phagocyte recruitment lsis of certain pathogens and cells Opsonization of pathogens Removal of immune complexes 1997 Current Biology Ltd./Garland Publishing.Inc Effector Actions of Complement