IMMUNOLOGY

Detailed explanation-1: -These attack foreign cells, cancer cells, and cells infected with a virus. T cells start growing in bone marrow and then travel to the thymus gland to mature.

Detailed explanation-2: -T cells are a part of the immune system that focuses on specific foreign particles. Rather than generically attack any antigens, T cells circulate until they encounter their specific antigen. As such, T cells play a critical part in immunity to foreign substances.

Detailed explanation-3: -A type of immune cell that can kill certain cells, including foreign cells, cancer cells, and cells infected with a virus. Killer T cells can be separated from other blood cells, grown in the laboratory, and then given to a patient to kill cancer cells.

Detailed explanation-4: -Chronic T-cell leukemia (T-cell prolymphocytic leukemia): A blood cancer that starts in your T-cells that can affect your bone marrow, blood and lymph nodes.

Detailed explanation-5: -Armed effector cytotoxic CD8 T cells are essential in host defense against pathogens that live in the cytosol, the commonest of which are viruses. These cytotoxic T cells can kill any cell harboring such pathogens by recognizing foreign peptides that are transported to the cell surface bound to MHC class I molecules.