Across
- 2. naturally existing immunity
- 4. immunity after being exposed to a small portion
- 6. type of immune cell
- 8. induces an immune response in the body
- 9. helps the body fight infection and other diseases
- 13. white blood cells engulf forgeign substances and body temperature rises
- 15. used to fight bacterial infections
- 16. recognize as aliens in the body
- 18. makes antibodies
- 19. disintegrates old red blood cells
- 20. an organism that causes disease
Down
- 1. type of white blood cell that surrounds and kills microorganisms
- 3. include T cells and B cells
- 5. fluid found in the lymphatic system
- 7. treated with antibiotics
- 10. causes an inflammatory response to an injury
- 11. filter lymph for bacteria and tumor cells
- 12. antibiotics are no longer effective
- 14. engulfs and absorbs bacteria
- 17. develops bone marrow