Immune System
Across
- 8. k
- 9. n
- 11. j
- 13. exposure to a disease organism triggers the
- 14. collaboration between cells and proteins that
Down
- 1. Macrophage
- 2. the circulatory system that carries cells
- 3. m
- 4. o
- 5. A germ that causes disease
- 6. h
- 7. l
- 10. k
- 12. h