Seudónimo Seudónimo

15-05-2020
Biology

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Doctors sometimes use a vaccine to help prepare the body to defend itself against future infections. These vaccines most often contain

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kallale464 kallale464

15-05-2020

The answer is dead or weakened virus

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the2nd09 the2nd09

21-05-2020

Answer: weakened pathogens

Explanation:

Each vaccine contains a small amount of the disease germ (virus or bacteria) or parts of the germ.

A pathogen is a bacterium, virus, or other microorganism that can cause disease.

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