KINE 2011 Chapter Notes - Chapter 8.3: Cell-Mediated Immunity, Bone Marrow, Natural Killer Cell
6 Jan 2018
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Lymphocytes: cytokine production, antigen recognition, antibody production, memory, cytotoxicity, pro(cid:448)ide defe(cid:374)se agai(cid:374)st targets for (cid:449)hich they"re specifically progra(cid:373)(cid:373)ed (adapti(cid:448)e immunity, lymphocytes live for 100-300 days, continually recycling. A t cell, or t lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. T cells can be distinguished from other lymphocytes, such as b cellsand natural killer cells, by the presence of a t-cell receptor on the cell surface. Immune function is helped by two kinds of white blood cells. The b cells (so-called because they develop in bone marrow) produce antibodies. The t cells (so-called because they develop in a small organ called the thymus gland) are responsible for a variety of other immune responses. A t cell count is a blood test that measures the number of t cells in your body. A tcell is a type of white blood cell.
