A-LevelBiologyImmunity9700/12 · May/June 2022 · Q401 Mark

A student used a diagram to show four types of cells involved in the primary immune response. [Figure showing a diagram with cells types 1, 2, 3, 4 and their functions related to unknown antigen] Which row is correct?

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AB-lymphocyte macrophage T-killer cell T-helper cell

Bmacrophage B-lymphocyte T-helper cell T-killer cell

CT-helper cell T-killer cell B-lymphocyte macrophage

DT-killer cell T-helper cell B-lymphocyte macrophage

✓ Correct answer

C: T-helper cell T-killer cell B-lymphocyte macrophage

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