You were sick with the flu last winter. Why then does your doctor suggest you be vaccinated against the flu this year?
A) The virus blocked your immune systemʹs ability to produce memory cells.
B) Surviving the flu one year inhibits the immune system the second year.
C) The virus inactivates helper T cells.
D) Flu viruses mutate rapidly.
Correct Answer:
Verified
Q38: Which of these are immune cells produced
Q39: Macrophages
A) are large, ciliated cells found in
Q40: Natural killer cells
A) destroy body cells that
Q41: Some of the daughter cells resulting from
Q42: Vaccinations are effective because they stimulate the
Q44: Why are new flu shots necessary every
Q45: Complement is a collection of
A) antibodies.
B) phagocytic
Q46: Which of the following provides cell-mediated immunity?
A)
Q47: Plasma cells are derived from
A) neutrophils.
B) macrophages.
C)
Q48: The primary function of cell-mediated immunity is
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