Which cells are required to process and present antigens from foreign material as the initial step in the immune response?
A) T-helper cells
B) Macrophages
C) Eosinophils
D) Monocytes
Correct Answer:
Verified
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A) humoral immunity.
B) cell-mediated immunity.
C)
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B) produce histamine.
C) produce
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A) A
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