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| A type of protein molecule known as immunoglobulin produced by the B-lymphocyte. They bind to specific antigens to destroy or deactivate them. |
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| Any substance capable of triggering an immune response. This can be microorganisms such as fungi, spores, bacteria, or viruses. It can also be a toxin, a poisonous substance, or an unhealthy cell from the body, such as a cancer cell. |
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| Diseases caused when the cells of immune system mistakenly attack healthy cells of the body. |
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| The origin of all blood cells. These cells develop into B-cells, Killter T-cells, granulocytes, red blood cells, and platelets, as well as immature T-cells that migrate to the thymus gland to fully develop. |
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| An immune response involving the T-lymphocytes. The cytotoxic, or Killer, T-cell must be bound to an infected cell to kill it. Likewise, a Helper T-cell must be bound to an unhealthy cell to initiate an appropriate immune response. |
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| White cells involved in the non-specific immune response. These cells all contain storage organelles of powerful chemicals that are released in the presence of a harmful antigen. |
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| An immune response involving the antibodies produced by the B-lymphocyte. Antibodies can bind to and deactivate a harmful antigen without the presence of a B-lymphocyte. |
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| Protein molecules that identify cells of the body, distinguishing them from those that are not. |
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| White blood cells of all types. |
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| Composed of vessels, nodes and fluid. It bathes cells, flushes out harmful antigens, and serves as a conduit for the cells of the immune system to do their work. |
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| The white cells involved in the specific immune response. The are two major types. |
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| Two major types of lymphocytes. |
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| White cells that surround and engulf foreign antigens and clean up cellular debris. They ingest foreign materials and present them to other cells of the immune system to initiate an immune response. |
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Definition
| Another name for Macrophages |
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Term
| Major Histocompatibility Complex (MHC) |
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Definition
| The cluster of immunoglobulins present in every cell of the body which distinguies cells of the body from those that are not. |
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| A white cell of the non-specific immune system which will eventually develp into a macrophage. |
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| A body organ that filters the blood for harmful antigens. Also produces B-cells and T-cells, and stores macrophages and red blood cells. |
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| Cells of the bone marrow that are capable of developing into any type of blood cell. |
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Definition
| An organ of the immune system where T-cell lymphocytes develop. It becomes non-funtional as one moves into adulthood. |
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