Which of the Following is Crucial to Activation of the Adaptive

Question

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)
E)histamine release by mast cells

Accepted Answer

Presentation of the MHC-antigen complex on a cell surface is crucial for activation of the adaptive immune response. This is because it allows for recognition and activation of T cells, which are a key component of the adaptive immune response. Without presentation of the MHC-antigen complex, T cells would not be activated and the adaptive immune response would not be initiated.