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Important terms for the immune system

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Answer
passive immunity   immunity in which the antibodies that fight a pathogen come from another organism  
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active immunity   Immunity that occurs when a persons own immune system produces antibodies in response to the prescense of a pathogen  
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allergy   a disorder in which the immune system is overly sensetive to a foriegn substance  
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infectious disease   A disease that can be spread from one organism to another  
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immunity   The ability to resist a particular toxin by the action of specific antibodies  
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antibiotic   A medicine that inhibits the growth of or destroys microorganisms  
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Pasteurization   Heating process that is widely used to kill microorganisms found in food  
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inflammatory response   certain type of white blood cell that leaks from the blood into tissue to fight the pathogens  
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Antigen   A toxin or other foriegn substance that induces an immune response in the body  
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vaccination   Taking a vaccine as a precaution against contracting a disease  
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Allergen   a substance that causes an allergic reaction  
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Histamine   A heterocydic amine, that is released by cells in the response to injury and in allergic and inflammation reaction  
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pathogen   An organism that causes a disease  
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Immune response   It is the third line of defense  
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antibody   a chemical produced by the b cell, that fights a specific kind of pathogen  
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lymphocyte   A type of white blood cell surrounded in cytoplasm  
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T cell   Identifys a pathogen and distinguishes one kind of pathogen from another  
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allergy   A disorder in which the immune system is very sensitive to a foriegn substance  
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Vaccine   A substance that contains pathogens that have been weakened to trigger the immune system  
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B cell   A lymphocyte that produces a chemical to destroy a specific kind of pathogens  
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phagocyte   White blood cells that destroy pathogens by engulfing them and breaking them down  
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