Across
- 2. what the immune system fights
- 4. active immunity
- 6. what a vaccine gives you
- 7. what mothers milk provides
- 10. disease the first vaccine was made for
- 11. what remembers the pathogen next time
- 12. First line of defense
- 13. these are pathogens that are not alive
Down
- 1. better defense the second time
- 3. the white blood cells that eat
- 5. what white blood cells make
- 8. whats on the outside of a virus
- 9. what destroys infected cells