Biology, 11.06.2020 09:57 cadanceowasso

The vaccine in a flu shot contains weakened flu viruses. How does a flu shot work with the immune system?
O A. It delivers antibodies to the muscles.
B. It delivers antibiotics.
C. It activates macrophages.
D. It activates the production of memory cells.

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The vaccine in a flu shot contains weakened flu viruses. How does a flu shot work with the immune s...