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Immune System
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All 15 terms
Terms | Definitions |
|---|---|
 Immunity | The protection against infectious disease conferred either by the immune response generated by immunization or previous infection or by other non-immunologic factors. |
| Passive immunity | A type of immunity acquired by the transfer of antibody from one individual to another, such as from mother to offspring. |
| Vaccine | A suspension containing live, attenuated, modified, or killed microorganisms (or their toxins), or tumor antigens, which when administered into the body stimulates the body's immune system to produce antigen-specific antibodies. |
| Active immunity | A type of immunity or resistance developed in an organism by its own production of antibodies in response to an exposure to an antigen, a pathogen or to a vaccine. |
| Antibiotic | A chemical substance derivable from a mold or bacterium that kills microorganisms and cures infections. |
| Inflammatory response | Nonspecific defense against infection, characterized by redness, heat, swelling, and pain. |
| B-cell | Lymphocyte that matures in the bone marrow and later produces antibodies; responsible for humoral immunity. |
| Lymphocyte | A type of white blood cell that produces antibodies that help destroy pathogens. |
| Antigen | Any of the various substances that when recognized as not part of the body by the adaptive immune system triggers an immune response, stimulating the production of an antibody that specifically reacts with it. |
| Immune response | The bodily defense reaction that recognizes an invading substance (an antigen: such as a virus or fungus or bacteria or transplanted organ) and produces antibodies specific against that antigen. |
| Phagocytes | White blood cells that digest & destroy microorganisms and other unwanted substances. |
| Antibody | Any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, producing an immune response |
| T-cell | Lymphocyte that matures in the thymus; is responsible for cell-mediated immunity and also plays a role in humoral immunity. |
| Pathogen | Any disease-producing agent (especially a virus or bacterium or other microorganism). |
| Toxin | A poison that can harm an organism; can be produced by bacterial pathogens. |
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