Across
- 3. cools body
- 4. connects and exchanges
- 6. destroy pathogen
- 7. redness and swelling
- 11. carry o2
- 14. moistins skin
- 15. identification of the pathogen
- 16. away from the heart
- 17. to the heart
- 18. inner layer
Down
- 1. fight infection
- 2. skin hair and nails
- 5. destroys bacteria
- 8. spots pathogen
- 9. cause scabs
- 10. weak stand of virus
- 12. outer layer
- 13. disease-causing thing