Which component of the plasma protein system tags pathogenic microorganisms for destruction by neutrophils and macrophages?
A)Complement cascade
B)Clotting system
C)Kinin system
D)Immune system

Question

Quizplus · Accepted Answer

C3b (a component of the complement cascade) adheres to the surface of a pathogenic microorganism and serves as an efficient opsonin. Opsonins are molecules that "tag" microorganisms for destruction by cells of the inflammatory system (primarily neutrophils and macrophages).

Which Component of the Plasma Protein System Tags Pathogenic Microorganisms