On re-exposure to the same antigen, which change is characteristic of the secondary immune response?

Question

Accepted Answer

보기 4: A rapid rise in IgG with higher affinity

Because memory cells already exist, the secondary response is faster and stronger, IgG predominates, and antibody affinity increases. The short lag phase and the higher peak titer compared with the primary response are the key points.

Answer

보기 1: A slow rise in IgM without class switching

Answer

보기 2: No measurable change in antibody levels

Answer

보기 3: A rise limited to IgE antibodies

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On re-exposure to the same antigen, which change is characteristic of the secondary immune response?

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