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Many Passengers on a Cruise Ship at Sea Are Exposed

Question 20

Multiple Choice

Many passengers on a cruise ship at sea are exposed to a norovirus, which causes flu-like symptoms.Among the first components that a passenger's immune system produces in fighting the virus, is/are


A) antibodies.
B) mucus.
C) natural killer cells.
D) T lymphocytes.
E) B lymphocytes.

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