Answer :
Natural killer (NK) cells are also called cytotoxic T cells (Option A).
What are NK cells?
The NK (Natural killer) cells are cytotoxic lymphocytes that trigger responses from the innate immune system.
Natural killer cells are one of the most important types of lymphocytes (white blood cells) in human cells.
These cells have cytotoxic properties because they produce cytotoxic granules and different cytokines.
Learn more about NK cells here:
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