An antigen-presenting cell (APC)is a
A)red blood cell.
B)macrophage.
C)helper T cell.
D)B cell.

Question

Quizplus · Accepted Answer

An antigen-presenting cell (APC) is a cell that can present antigens on its surface to T cells, which can then initiate an immune response. Macrophages are a type of APC that play a major role in the innate immune response by engulfing and digesting pathogens, then displaying antigen fragments on their surface to T cells. Red blood cells do not have the ability to present antigens, nor do B cells (which are involved in antibody production) or helper T cells (which are responsible for activating other immune cells).

An Antigen-Presenting Cell (APC)is a