A-LevelBiologyImmunity9700/12 · Oct/Nov 2009 · Q341 Mark
After an immune response, memory cells remain in the blood for a long time. What is the function of memory cells?
AThey can ingest invading bacteria.
BThey contain lots of antibodies.
CThey divide to make plasma cells.
DThey kill cells infected with virus.
✓ Correct answer
C: They divide to make plasma cells.
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