Biology 9700 · AS & A Level · The immune system

The immune system — practice question

The statements below describe responses made by cells of the immune system to a pathogen. Which response is correct for $$-lymphocytes?

  • A1, 2, 3 and 4
  • B1, 2 and 4 only
  • C1 and 3 only
  • D2, 3 and 4 only

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