Which of These is Able to Bind to the T

Question

Which of these is able to bind to the T cell receptor on a specific T cell?
A)Any epitope on an antigen.
B)Any epitope.
C)Any antigen.
D)Only a single unique epitope on an antigen.
E)Any ligand.

Accepted Answer

Only a single unique epitope on an antigen can bind to the T cell receptor on a specific T cell. This interaction is important for the activation of the T cell and for the subsequent immune response. Other epitopes on the same antigen may not necessarily bind to the T cell receptor or may bind to a different T cell receptor. Additionally, not all antigens can activate T cells, as some are recognized by other components of the immune system, such as antibodies or innate immune cells.