All terms in this list:
microorganism: A living thing to small to see without a microscope
pathogen: An organism that causes disease
infectious disease: A disease caused by the presence of a living thing in the body that can pass from one organism to another
toxin: A poison that can harm an organism
inflammatory response: Part of a body's defense against pathogens, in which fluid and white blood cells leak from blood vessels into tissues and destroy pathogens by breaking them down
phagocyte: A white blood cell that destroys pathogens by engulfing hem and breaking them down
immune response: part of the body's defense against pathogens in which cells of the immune system react to each kind of pathogen with a defense targeted specifically at that pathogen
lymphocyte: A white blood cell that distinguishes between each kind of pathogen
T cell: A lymphocyte that identifies pathogens and distinguishes one pathogen from another
antigen: A molecule that the immune system recognizes either as part of the body or as coming from outside the body
B cell: A lymphocyte that produces proteins that help destroy pathogens
antibody: A protein produced by a B cell of the immune system that destroys pathogens
AIDS: A disease caused by a virus that attacks the immune system
HIV: The virus that causes AIDS
immunity: A resistance to a specific thing.
active immunity: When your immune forever
vaccination: getting a when harmless antigens are put into your body to create active immunity
vaccine: consists of weak or dead antigens to help you fight things off
passive immunity: results when antibodies are given to a person, have only for a while
antibiotic: Any substance that can destroy or inhibit the growth of bacteria and similar microorganisms.
antibiotic resistance: results when some bacteria are able to withstand effects of an antibiotic
noninfectious disease: diseases that are not caused by pathogens
allergy: reaction caused when the immune system is overly sensitive to a foreign substance
allergen: pollen, dust, some foods, pet dandruff
histamine: chemical that causes an allergy
asthma: a disease in which the air ways in the lungs narrow significantly
insulin: substance that enables the body to take glucose from the blood and use it for energy
diabetes: when your body doesn't create enough insulin or your body can't use insulin properly
tumor: An abnormal growth; differential diagnosis includes abscess, metaplasia, and neoplasia.
carcinogens: causes cancer
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