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  • Biology (Practice Test)
  • The first line of defence against many tumours is
Multiple choice

The first line of defence against many tumours is

  1. natural killer cells

  2. polymorphs

  3. monocytes

  4. none of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Natural killer (NK) cells are a type of lymphocyte that play a major role in the host-rejection of both tumours and virally infected cells. They provide an immediate, non-specific immune response.

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