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Discussion

Active immunity means

  • A.resistance developed before disease
  • B.Resistance developed after disease
  • C.Increased heart beat
  • D.Increased flow of blood

Answer: B

Correct answer: Resistance developed after disease

Active immunity is what the body builds by responding to an antigen - after an infection, or after a vaccine. It takes days or weeks to develop, but it leaves memory cells and so lasts. Resistance present before any encounter would be innate immunity.

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