defensery
defensery defensery
  • 17-09-2020
  • Biology
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How do vaccines affect the immune system?

Respuesta :

zzzcloudy
zzzcloudy zzzcloudy
  • 17-09-2020

Answer:

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.

Hope this helps! :)

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