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17 Cards in this Set

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  • Back
expectancy
a state of waiting for something to happen
bacterium
disease germs; one-celled organisms that can be seen only with a microscope
confirmed
to make sure
contaminated
unclean; mixed with something dirty
sterilize
to make free from germs
generation
(1) a group of people who are all about the same age (2) the process fo bringing into existence
vaccine
a preparation of weakened germs used to protect a person or animal from disease
dispel
to drive away; to banish
chemist
a scientist who studies what substances are made of
epidemic
a rapidly spreading disease
antibodies
substances produced by the body that destroy or weaken germs
microbes
tiny organisms or germs too small to be seen without a microscope
plague
a destructive epidemic disease
infected
having disease germs present
germs
tiny plants or animals that cause disease
immune
protected from germs
bacteria
germs