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| The ingestion and digestion of bacteria and other foreign substances. |
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| "Big Eaters", phagocytic cell present in many tissues that functions in innate immunity by destroying microbes and in acquiring immunity as an antigen-presenting cell. |
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| A type of white blood cell with low phagocytic activity that is thought to play a role in defense against parasitic worms by releasing enzymes toxic to these invaders. |
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| Help recognize and eliminate certain diseased cells in vertebrates.(Kill by releasing chemicals) |
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| The changes brought about by signaling molecules released upon injury or infection. |
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| Substance released by mast cells that causes blood vessels to dilate and become more permeable in inflammatory and allergic responses. |
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| Lymphocytes that migrate from the bone marrow to the thymus.(Recognize and inactivate foreign cells). |
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| Lymphocytes that mature in the bone marrow.(Recognize and inactivate foreign cells). |
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| A macromolecule that elicits an immune response by binding to receptors of B cells or T cells. |
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| Protein secreted by plasmas cells(differentiated B cells) that binds to a particular antigen, also called immunoglobulin. All antibody have the same Y-shaped structure and in their monomer form, consist of two identical heavy chains and two identical light chains. |
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Definition
| Long lived clones of lymphocytes that bear receptors specific for an antigen. |
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| The antibody-secreting effector cell of humoral immunity; arises from antigen-stimulated B cells. |
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| A type of lymphocyte that, when activated, kills infected cells as well as certain cancer cells and transplanted cells. |
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| A type of cell that, when activated, secretes cytokines that promote the response of B cells(humoral response) and cytotoxic T cells(cell-mediated response) to antigens. |
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| Branch of acquired immunity that involves the activation of B cells and that leads to the production of antibodies, which defend against bacteria and viruses in body fluids. |
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| Branch of acquired immunity that involves the activation of cytotoxic T cells, which defend against infected cells. |
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| The process of generating a state of immunity by artificial means. Two Types:(Active, Passive) |
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| Specified reduction in the number of T cells and the appearance of characteristic secondary infections. |
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| A protein that has antiviral or immune regulatory functions. (helps activate Macrophages) |
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