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Which of these is a type of specific defense against pathogens?

  • A.Lymphocytes
  • B.Macrophages
  • C.Phagocytes
  • D.Leukocytes

Answer: A

Correct answer: Lymphocytes

Lymphocytes - B and T cells - carry the specific (acquired) defence: each bears a receptor for one antigen, and the survivors of a response persist as memory. Macrophages, phagocytes and the leucocytes generally act non-specifically, engulfing whatever is marked as foreign.

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