Definitions for "Cell mediated Immunity"
This is immune destruction caused by killer cells, not antibodies. Natural Killer Cells can become activated in infertile women or women who lose pregnancies through miscarriage. These activated cells produce Tumor Necrosis Factor that kills placental cells.
The form of adaptive immunity that is mediated by T lymphocytes and serves as the defense mechanism against microbes that survive within phagocytes or infect non-phagocytic cells. CMI responses include CD4 cell-mediated activation of macrophages that have phagocytosed microbes and CD8 CTL killing of infected cells (1).
The part of the immune response mediated by antigen-specific T cells and various non-specific cells of the immune system. Cell-mediated immunity is largely responsible for providing protection against viruses, cancer and bacteria that are capable of living inside mammalian cells.