Q:

Which blood cells are involved in protecting the body from pathogens and foreign cells?

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. Which blood cells are involved in protecting the body from pathogens and foreign cells?


  1. erythrocytes
  2. leucocytes
  3. platelets
  4. haemoglobin

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B: Leucocytes (white blood cells) include NK (natural killer), T & B lymphocytes & macrophages & microphages. 

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