T cells will begin to secrete cytokines when bound to which of the following?
A) a MHC-antigen complex
B) a receptor-antigen complex
C) an antigen directly bound to the surface of a transport vesicle
D) an antigen directly bound to the surface of a macrophage only
E) another T cell only

Question

Quizplus · Accepted Answer

T cells recognize antigens presented by major histocompatibility complex (MHC) molecules on the surface of antigen-presenting cells (APCs) such as dendritic cells, macrophages, and B cells. Binding of the T cell receptor (TCR) to the MHC-antigen complex on the APC triggers T cell activation and cytokine secretion.

T Cells Will Begin to Secrete Cytokines When Bound to Which