Which of the following statements is NOT correct in context with the NK cells?
A. NK cells cannot kill body cells that lack MHC markers.
B. NK cells rec¬ognize certain proteins displayed by body cells that are under stress.
C. NK cells can operate early in immune defenses
D. NK cells can kill infected or ailing body cells.
E. Cytokines secreted by helper T cells stimulate NK cell division
Answer: A
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