A-LevelBiologyImmunity9700/12 · May/June 2018 · Q391 Mark
Where are antigens found?
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.
Aon the surface of pathogen ✓, on the surface of macrophage ✓
Bon the surface of pathogen ✓, on the surface of macrophage x
Con the surface of pathogen x, on the surface of macrophage ✓
Don the surface of pathogen x, on the surface of macrophage x
✓ Correct answer
A: on the surface of pathogen ✓, on the surface of macrophage ✓
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