The following statements regarding cytotoxic T lymphocytes are true EXCEPT
A) Naive cytotoxic T lymphocytes are activated by antigen-presenting cells.
B) Direct contact between cytotoxic T lymphocyte and target cell is not necessary for the killing of the target cell.
C) CD8 protein is on the cell surface of cytotoxic T lymphocytes.
D) Cytotoxic T lymphocytes secrete granules containing perforins and granzymes.
E) Cytotoxic T lymphocytes cause cell death of target cells.
Ans: B) Direct contact between cytotoxic T lymphocyte and target cell is not necessary for the killing of the target cell.
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____.
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