Multiple Choice
Which of the following is crucial to activation of the adaptive immune response?
A) memory cells
B) presentation of MHC (major histocompatibility complex) -antigen complex on a cell surface
C) somatic hypermutation
D) phagocytosis of antibody-antigen complex by macrophages in the blood (the humoral response)
Correct Answer:

Verified
Correct Answer:
Verified
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