David 6th

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Across
  1. 1. outer layer
  2. 3. the way to detect if a pathogen is a pathogen
  3. 4. away from heart
  4. 6. cause scabs
  5. 10. spots pathogen
  6. 14. redness swelling and heat
  7. 16. kills virus
  8. 17. carries O2
  9. 18. kills antigen
  10. 19. toward heart
Down
  1. 2. skin nails hair
  2. 5. weak or dead strain of virus
  3. 7. kills bacteria
  4. 8. disease causing agent
  5. 9. cools body
  6. 11. connects and exchanges
  7. 12. moisturizes skin and hair
  8. 13. fights infection
  9. 15. inner layer