A-LevelBiologyImmunity9700/12 · May/June 2024 · Q381 Mark
What is the correct sequence of events in a primary immune response?
AT-lymphocyte activation → B-lymphocyte selection → plasma cell release
Bantigen presentation by macrophages → cytokines released by T-helper cells → B-lymphocyte differentiation
Cantigen presentation by neutrophils → T-memory cell activation → B-lymphocyte selection
DT-memory cell activation → B-memory cell activation → antibody production
✓ Correct answer
B: antigen presentation by macrophages → cytokines released by T-helper cells → B-lymphocyte differentiation
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