Biology 9700 · AS & A Level · The immune system

The immune system — practice question

A blood cell count can reveal how many white blood cells are present in the blood. In what other part of the body are white blood cells found?

  • A1, 2 and 3
  • B1 and 2 only
  • C1 and 3 only
  • D2 and 3 only

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