Answer:
Destroy group of organisms
Explanation:
Cytotoxic T cells also called killer cells are type of T lymphocytes that are involved in immunity. They circulate through blood, lymph and lymphatic tissues and destroy the invading organisms by attacking them directly. Cytotoxic T cells have receptors on the outer membrane that binds antigens or organisms tightly. Then, the cytotoxic T cells enlarge and release cytotoxic substances like the lysosomal enzymes which destroy the invading organisms. Cytotoxic T cells does not stimulate thrombin, increase erythrocyte production, produce antibodies and platelets. Thrombin is produce by thrombin activator during coagulation. Cytotoxic T cells does not play role in erythropoiesis and platelets formation. Antibodies are produced by B lyphmocytes.