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Health, 20.09.2019 08:20 dmgboos6

Vaccines are effective in preventing disease because they
a. prepare the immune system to recognize and destroy pathogens.
b. combine with pathogens to inactivate them.
c. contain specific b lymphocytes.
d. consist of bacteria that could infect healthy cells

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Vaccines are effective in preventing disease because they
a. prepare the immune system to reco...
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