Question

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what are t cells that kill target cells by inducing apoptosis using the same mechanism as nk cells?
th1 cells
th2 cells
cytotoxic t cells
regulatory t cells
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Explanation:

Cytotoxic T cells (CTLs) are a type of T cell that plays a crucial role in the immune system's cell - mediated response. They are capable of recognizing and killing virus - infected cells, tumor cells, and other abnormal cells. CTLs induce apoptosis (programmed cell death) in target cells. They use similar mechanisms to natural killer (NK) cells. For example, both can release perforin (which creates pores in the target cell membrane) and granzymes (enzymes that enter the target cell through the pores and trigger apoptosis).
Th1 cells are mainly involved in cell - mediated immunity against intracellular pathogens by activating macrophages and other immune cells. Th2 cells are involved in humoral immunity, especially in responses against extracellular parasites and in allergic reactions. Regulatory T cells (Tregs) are involved in suppressing immune responses to prevent autoimmunity and maintain immune tolerance.

Answer:

Cytotoxic T cells