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Immune system and related vocabulary

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Term
Definition
immune system   complex group of defenses that protects the body against pathogens--includes the skin and respiratory, digestive, and circulatory systems  
antigen   any complex molecule that is foreign to your body  
antibody   a protein made in response to a specific antigen that can attach to the antigen and cause it to be useless  
active immunity   long-lasting immunity that results when the body makes its own antibodies in response to a specific antigen  
passive immunity   immunity that results when antibodies that are produced in one animal are introduced into another's body; does not last as long as active immunity  
vaccination   process of giving a vaccine by mouth or by injection to provide active immunity against a disease  
pasteurization   process in which a liquid is heated to a temperature that kills most bacteria  
virus   a strand of hereditary material surrounded by a protein coating that can infect and multiply in a host cell  
infectious disease   disease caused by a virus,bacterium, fungus, or protist that is spread from an infected organism or the environment to another organism  
biological vector   disease carrying-organism that carries a disease, such as a rat, mosquito, or fly, that spreads a disease  
sexually transmitted disease (STD)   infectious disease, such as chlamydia, AIDS, or genital herpes, that is passed from one person to another during sexual contact  
noninfectious disease   disease, such as cancer, diabetes, or asthma, that is not spread from one person to another  
allergy   overly strong reaction of the immune system to a foreign substance  
allergen   substance that causes an allergic reaction  
chemotherapy   use of chemicals to destroy cancer cells  


   


 
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Created by: MsHollinger