Across
- 4. Skin, hair, nails
- 9. Cools body
- 11. Weak or dead strand
- 12. Destroys bacteria
- 14. Destroy pathogen
- 15. "Clothing" of the pathogen
- 16. Cause scabs
- 18. Moisten skin and hair
Down
- 1. Towards the heart
- 2. Redness, swelling, and heat
- 3. Carries O2
- 5. Destroys virus
- 6. Fight infection
- 7. Connects, exchanges
- 8. Inner layer
- 10. Outer layer
- 12. Away from the heart
- 13. Disease causing agent
- 17. Spot pathogen