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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.
Dendritic cell are immune system cells whose function is to identify cancer cells, and pathogens like viruses, bad bacteria and fungus, so the the immune system T cells can then kill them. If a cancer cell is not identified by a dendritic cell, the T cells won't know it needs to be killed.