The membrane attack system is the body's innate defense system against microbial attack. Which of the following components of the complement system plays a key role in this defense?

Question

Quizplus · Accepted Answer

C3 is the key component of the complement system involved in the membrane attack complex formation, which can insert into the membrane of microbes and cause cell lysis. C2 and C4 are involved in the classical pathway of complement activation, while Factor B and D are involved in the alternative pathway.

The Membrane Attack System Is the Body's Innate Defense System