Alveolar Macrophages

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Across
  1. 5. two's a crowd
  2. 7. Dinner for Mr. Macrophage
  3. 8. the engulfing of invasive pathogens
  4. 9. secreted proteins with a purpose
Down
  1. 1. where white blood cells are made
  2. 2. a respiratory passage in the body
  3. 3. protective slime in respiratory system
  4. 4. tiny air sacs in the lungs
  5. 6. molecule needed for metabolic work