How does a vaccine work?
a. it kills viruses.
b. it protects cells from viral infecti...
Health, 26.09.2019 15:30 Farhan54019
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.
Answers: 1
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