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Immune System
Immune System Vocabulary
Term | Definition |
---|---|
white blood cell | a blood cell that fights disease |
antibody | protein that defends the body against disease |
immunity | the body's ability to identify, destroy and dispose of disease |
antibiotic | medicine that kills or slows the growth of bacteria |
pathogen | organism that causes disease |
vaccination | an injection that produces a mild form of a disease in order to help the body build up an immunity to the disease |
virus | an extremely small organism that causes disease in humans, animals and plants |
bacteria | a one-celled micro-organism, some are helpful and some cause disease |
fungus | a simple parasitic organism |
lymph node | tissue that helps to filter pathogens from the body |
parasite | an organism that lives in or on another organism |
organism | a living thing |