charliewils3831 charliewils3831

03-07-2017
Biology

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What is injected into the body during a vaccination?

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ahern81 ahern81

03-07-2017

Vaccination involves putting a small amount of an inactive form of a pathogen into the body.

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03-07-2017

dead or weakened pathogens so the body will become immune to it and learn how to fight against the real "attackers"

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