How is a viral antigen, like EBV, recognized by T cells?
A) An antigen fragment is presented within class I MHC to the T cell receptor.
B) Interferon proteins stick to the surface of infected cells.
C) T cells recognize antibodies that have bound to viral particles.
D) The virus is engulfed by T cells using Toll-like receptors.

Question

Quizplus · Accepted Answer

Viral antigens, such as EBV, are recognized by T cells when an antigen fragment is presented within class I MHC to the T cell receptor. This allows T cells to identify and target infected cells for destruction.

Answer: B, C, and D are incorrect 
 Interferons, antibodies, and Toll-like receptors are involved in the recognition and response to viral infections, but they do not directly recognize viral antigens like T cells do.

How Is a Viral Antigen, Like EBV, Recognized by T