Term
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Definition
| a disease that is spread from one living thing to another through the environment |
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Definition
| organism that causes disease |
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Definition
| a condition that occurs when pathogens enter the body, multiply, and damage body cells |
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Term
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Definition
| pieces of genetic material surrounded by a protein coat |
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Definition
| single-celled microorganisms |
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Term
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Definition
| substance that kills cells or interferes with their functions |
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Term
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Definition
| organism, usually an arthropod, such as a tick, that carries and transmits pathogens to humans or other animals |
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Definition
| a network of cells, tissues, organs, and chemicals that fight off pathogens |
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Definition
| a reaction to tissue damage caused by injury or infection |
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Term
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Definition
| a white blood cell that attacks invading pathogens |
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Term
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Definition
| a substance that is capable of triggering an immune response |
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Term
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Definition
| the state of being protected against a particular disease |
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Term
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Definition
| a specialized white blood cell that coordinates and performs many of the functions of specific immunity |
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Term
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Definition
| a protein that acts against a specific antigen |
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Term
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Definition
| a preparation of dead or weakened pathogens that are introduced into the body to stimulate an immune response |
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Term
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Definition
| an infection of the lungs in which the air sacs fill with pus and other liquid |
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Term
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Definition
| a yellowing of the skin or eyes |
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Term
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Definition
| a communicable disease whose incidence in humans has increased within the past two decades or threatens to increase in the near future |
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