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Noun. 1. cytotoxic T cell-T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it. CD8 cell, CD8 T cell, killer cell, killer T cell. T cell, T lymphocyte-a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells.
- B cells: can be activated to produce antibodies-Helper T cells: directly target and kill cancer cells-Cytotoxic T cells: carry out cellular immune responses-Regulatory T cells: release inhibitory cytokines to dampen the immune response. - Helper T cells: directly target and kill cancer cells.