The Complement System Is a

Multiple Choice

The complement system is a

A) set of proteins involved in innate but not acquired immunity.
B) set of proteins secreted by cytotoxic T cells and other CD8 cells.
C) group of proteins that includes interferons.
D) group of antimicrobial proteins that act together in a cascading manner.
E) set of proteins that act individually to attack and lyse microbes.