How is a T-cell receptor different from a B-cell receptor?
A. T-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule.
B. B-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule.
C. T-cell receptors are composed of 4 protein chains (pieces), while B-cell receptors are composed of only 2 pieces.
D. T-cell receptors are eventually secreted into the bloodstream by activated T-cells, whereas B-cell receptors are not; they always stay with the B-cell.
A
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