Across
- 2. these t cells activate other t cells
- 5. specialized protein that binds to and destroys pathogens
- 6. the skin and other external defenses make up this system
- 8. inflammation and fever are types of this defense
- 9. substance that stimulates response by the immune system
- 11. t and b cells that remember a specific pathogen
- 12. these blood cells can patrol all tissues in the body
- 13. every 40 minutes one (blank) skin cells are lost and replaced
- 16. substance that is introduced to the body to produce immunity
- 17. helps to wash pathogens into stomach
Down
- 1. organism or virus that causes disease
- 3. skin secreting oils is an example of this type of defense
- 4. system made of tissues and specialized white blood cells
- 6. swelling and redness
- 7. make antibodies that attach to antigens
- 8. the ability to resist and recover from infectious disease
- 10. cell pieces that help seal open wounds
- 11. engulfs and digests pathogens
- 14. these t cells attack infected body cells
- 15. a body response that slows the growth of bacteria