g9abbyskuLatelyn g9abbyskuLatelyn

19-02-2017
Biology

contestada

How does a vaccine work?
a. it kills viruses
b. it protects cells from viral infection
c. it prepares the immune system to recognize viruses
d. it prevents viruses from being transmitted from an infected person

Respuesta :

willmyers willmyers

19-02-2017

The answer to this question is C

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