T-cell receptors can only recognize antigens on the surfaces of antigen-presenting cells; they cannot bind free antigen.
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Q31: Cytotoxic T cells destroy target cells by
A)direct
Q32: The variable domain of antibody molecules
A)interacts with
Q33: During activation of a T cell,the cytokine
Q34: T cells are so named because they
Q35: In humans,the antigen-presenting cells include all of
Q37: B cells are more effective than macrophages
Q38: When a presented antigen fragment interacts with
Q39: Most known superantigens are glycolipids.
Q40: In an antibody molecule,the _ region mediates
Q41: Which enzyme inserts nucleotides at the V-J
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