CTLs mediate a powerful and lethal immune response to infected host cells.Which of the following steps is NOT involved with CTL activation and function?
A) Antigen presented with MHC class I is recognized by CTLs.
B) APC presentation occurs to both TC and TH cells.
C) Fas-FasL signaling pathway is activated, triggering apoptosis.
D) Histamine is released from cytoplasmic granules, recruiting macrophages to the site of infection.
E) Perforin and granzymes are released, triggering apoptosis of infected cell.
Correct Answer:
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