The T Cell Receptor (TCR) Recognizes an Antigen

question 21

Multiple Choice

The T cell receptor (TCR) recognizes an antigen

• A)when it is coated with antibody.
• B)when it is coated with complement.
• C)as a peptide bonded to an MHC class II molecule on the surface of an antigen-presenting cell.
• D)as a free-floating antigen in the peripheral blood or lymphatic circulation.

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