3 years ago

B) how does a vaccine change the body

Biology

2 answers:

valentinak56 [21]3 years ago

3 0

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria.

AleksandrR [38]3 years ago

3 0

Answer:

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria.

Explanation:

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