Across
- 4. Germs invade the body, multiply, and cause harm to body cells
- 8. A disease that does not spread from person to person
- 9. Touching an infected area on another person
- 12. Resistance to infection
- 13. A disease that spreads from person to person
- 14. Eating or drinking contaminated food or water
- 16. White bloods cells that attack germs
Down
- 1. Chemicals produced specifically to fight a particular invading substance
- 2. Bite of an infected insect or animal
- 3. Smallest disease causing organisms
- 5. Many celled primitive plants such as molds
- 6. One celled organisms
- 7. Breathing in air borne pathogens
- 10. A group of cells, tissues, and organs that fight specific germs
- 11. An unhealthy condition of the body or mind
- 15. One celled organisms similar to animals