Definition Crossword

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Across
  1. 1. second stage of plague
  2. 3. Use as control group
  3. 5. Effector protein
  4. 7. white blood cell
  5. 8. First stage of plague
  6. 9. Activate other immune cells
Down
  1. 2. Specific type of cytokine, direct immune cells
  2. 4. Third stage of plague
  3. 6. Prevents bacteria proliferation
  4. 8. Signals for neutrophil recruitment