a type of immune cell that can kill certain cells, including foreign cells, cancer cells, and cells infected with a virus. cytotoxic t cells can be separated from other blood cells, grown in the laboratory, and then given to a patient to kill cancer cells. a cytotoxic t cell is a type of white blood cell and a type of lymphocyte. also called cytotoxic t lymphocyte and killer t cell.
出典:Wiktionary