What initiates T cell activation?

A. When its T cell receptor binds to an antigen displayed on an MHC of another cell
B. When the T cell displays the antigen on its MHC
C. When it receives cytokines secreted from Th1 cells
D. When it receives cytokines secreted from Regulatory T cells



Answer :

Final answer:

T cell activation is triggered when the T cell receptor binds to an antigen displayed on another cell's MHC. This leads to the release of cytokines and the activation and differentiation of T cells.


Explanation:

T cell activation is initiated when the T cell receptor recognizes an antigen presented on an MHC of another cell. This interaction triggers a series of events, including the release of cytokines that contribute to T cell activation and differentiation. The process involves specific recognition of foreign epitopes presented within the MHC II antigen-binding cleft on antigen-presenting cells.


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