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a person or animal that transmits a disease-causing organism to others. Typically, the carrier suffers no symptoms of the disease
the strength of an intoxicant, as measured by the amount needed to produce a certain response
lack of sensitivity to a drug, insecticide, etc., esp. as a result of continued exposure or genetic change.
the state or fact of being likely or liable to be influenced or harmed by a particular thing
an organism, typically a biting insect or tick, that transmits a disease or parasite from one animal or plant to another.
a molecule that the immune system recognizes either as part of the body or as coming form outside the body
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