A-LevelBiologyImmunity9700/12 · Oct/Nov 2018 · Q391 Mark
The graph shows how the body reacts following exposure to an antigen for the first and second time. What is the direct cause of the increase in antibody production after the second exposure to antigens?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AB-memory cells
Bmacrophages
Cplasma cells
DT-memory cells
✓ Correct answer
C: plasma cells
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