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Neutrophils, basophil, lymphocytes, eosinophil and monocytes are examples of ________.

  • A.Physical barrier
  • B.Cellular barriers
  • C.Cytokine barriers
  • D.Physiological barriers

Answer: B

Correct answer: Cellular barriers

These are all leucocytes - white blood cells - and they make up the cellular arm of innate defence: neutrophils and monocytes engulf invaders, eosinophils attack parasites, basophils release inflammatory mediators, and lymphocytes carry the acquired response. Physical barriers are the skin and linings; physiological barriers are conditions such as acid and temperature; cytokine barriers are the interferons.

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