What is Most Closely Associated with Membrane-Attack Complexes (MACs)

Question

What is most closely associated with membrane-attack complexes (MACs)?
A) complement proteins
B) helper T cells
C) B cells
D) histamines
E) cytokines

Accepted Answer

Membrane-attack complexes (MACs) are a component of the complement system, which is made up of a group of plasma proteins that are involved in the immune response. The MACs are formed when complement proteins come together on the surface of a target cell, creating a pore that disrupts the cell's membrane, leading to cell lysis. Therefore, MACs are most closely associated with complement proteins.