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Immune & Infectious Diseases

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Question
Answer
pathogen   an organism, a virus or a protein that causes disease  
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immune system   made up of tissues and specialized white blood cells that recognize and attack foreign substances in the body  
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macrophage   a white blood cell that destroys pathogens by engulfing and digesting them (eating)  
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T cell   coordinate the body's immune response while others attack the infected cells (aka helper T)  
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B cell   make antibodies that attach to a specific antigen  
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antibody   specialize protein that binds to a specific antigen to tag it for destruction  
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immunity   ability to resist or recover from an infectious disease  
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vaccine   substance prepared from killed or weakened pathogens that is introduced into the body to produce immunity  
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noninfectious disease   diseases that are caused by hereditary or environmental factors (you catch it)  
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infectious disease   a disease caused by a pathogen (you can catch it)  
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antibiotic   a medicine used to kill or slow the growth of bacteria or other microorganisms  
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antiviral drug   a drug that destroys viruses or prevents their replication  
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bacteria   Made up of prokaryotes (no nucleus) that usually have a cell wall and reproduce by cell division. Causes diseases like TB, Strep throat, sinus infections and food poisoning  
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virus   Depends on living things to reproduce. Insert their DNA into a cell and take over the cell so it will reproduce quickly and infect other cells. Causes the common cold, flu and HIV.  
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fungi   Gets energy by absorbing materials and have cell walls but no chloroplast. They can be single-celled or multicellular. This group includes yeasts, molds and mushroom. It can cause skin diseases such as ringworm and athlete's foot.  
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parasite   an organism that lives on and feeds on another organism, called a host; usually harm the host; examples are a protist that cause malaria, worms, or contaminated food or water  
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