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Across
  1. 2. destroy pathogen
  2. 7. inner layer
  3. 8. skin,hair,nails
  4. 10. cause scabs
  5. 12. fight infection
  6. 13. cools body
Down
  1. 1. moisten skin and hair
  2. 3. outer layer
  3. 4. towards the heart
  4. 5. away from the heart
  5. 6. conects, exchanges
  6. 9. spot pathogen
  7. 11. carries 02