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CAIE A-Level Biology 11.2.4 Active, Passive, Natural and Artificial Immunity

Practise classifying infection, vaccination, maternal transfer and antibody injection by natural or artificial exposure, active or passive protection and memory-cell formation.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • classify infection as natural active and vaccination as artificial active immunity
  • classify maternal antibody transfer as natural passive and injection as artificial passive
  • compare delayed durable memory-forming active immunity with immediate temporary passive protection

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