Social Studies, 07.03.2020 00:59 dw685978
A vaccine puts into the body weakened/dead pathogenic material, which by itself is incapable of causing disease. How does this help to protect the body in the case of infection by a live pathogen?
C) A vaccine causes the secretion of antigens which remain in blood and fight the pathogen at the time of an infection.
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A vaccine puts into the body weakened/dead pathogenic material, which by itself is incapable of caus...
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