Across
- 2. this system fights germs
- 4. a substance given (as a shot) to help develop immunity
- 8. medicine that kills bacteria
- 9. type in your first name here (just use blank spots, don't change letters to other answers!)
- 12. chemicals made by WBCs that attach to germs
Down
- 1. contagious disease that can be spread
- 3. an overreaction of the immune system to something harmless
- 5. a substance that causes an immune response
- 6. a non-contagious disease that results from abnormal cell division
- 7. the body's "army"
- 10. keeps most germs out of the body
- 11. another name for germ