Across
- 2. from the heart
- 5. cells-destroy pathogen
- 6. layer
- 9. scabs
- 10. blood cell-fight infection
- 12. gland-moisten skin and hair
- 13. cells-spot pathogen
- 15. of pathogen
- 17. virus
- 18. the heart
Down
- 1. heat
- 3. bacteria
- 4. layer
- 7. system-skin, hair, nails
- 8. causing agent
- 11. or dead
- 14. glands-cools body
- 16. blood cell-carries O2