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CAIE A-Level Biology 11.1.4 Memory Cells and Long-Term Immunity

Practise explaining persistence of antigen-specific memory cells and their rapid clonal expansion into effector cells during a faster, larger secondary response.

Syllabus
2028–2030
Course
Biology 9700
Level
AS

Exam points

  • state that antigen-specific memory cells remain after the primary immune response
  • explain rapid clonal expansion and plasma-cell formation after second exposure
  • compare secondary antibody concentration, speed and duration with the primary response

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