Yearly vaccination of humans for influenza viruses is necessary because
A) of an increase in immunodeficiency diseases.
B) flu can generate anaphylactic shock.
C) surviving the flu one year exhausts the immune system to nonresponsiveness the second year.
D) rapid mutation in flu viruses alters the surface proteins in infected host cells.
E) flu leads to autoimmune disorders.
Correct Answer:
Verified
Q42: This type of immunity is present only
Q43: T cells of the immune system include
A)
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Q48: Select the pathway that would lead to
Q49: The cells involved in innate immunity, whose
Q50: Arrange these components of the mammalian immune
Q51: CD4 and CD8 are
A) proteins secreted by
Q52: A cell type that interacts with both
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