Across
- 6. connect exchanges.
- 8. towards the heart.
- 9. inner layer
- 10. Fight infection
- 13. Cause scabs.
- 15. destroys bacteria
- 17. Cools body
- 18. outer lair.
- 19. Destroy pathogen
Down
- 1. moisten skin and hair
- 2. Clothing of the pathogen
- 3. weak or dead
- 4. Destroys virus.
- 5. away from heart.
- 7. skin hair nails.
- 11. Spot pathogen.
- 12. Redness swelling and heat.
- 14. Disease causing agent.
- 16. Carries 02