Answer:
D) secrete a cytokine that triggers apoptosis
Explanation:
Cytotoxic T cells also known as killer cells are lymphocytes that can kill foreign cells (also cancer cells, damaged and infected cells). They express specific type of receptors called T-cell receptors (TCRs) which recognize antigen of foreign cells. Cytotoxic T cells release cytotoxins such as perforin and granzymes and their role is to trigger the signal cascade in the target cell that will lead to apopotsis.
It has increasingly got hotter
<span>What happens to them would basically happen to everything only the earth's surface is more robust. The answer is c. they fold to create ridges and valleys perpendicular to the direction to which pressure is applied. This means that it takes the form based on the force that is applied to it which is in this case horizontal, meaning from sides instead of vertical which would be from up or down.</span>