Across
- 2. A type of barrier that kills pathogens before they can enter the body
- 4. A type of blood cell in blood that fights infections
- 6. A substance that boosts the body's immunity to a specific pathogen
- 9. An organism with complex cells that feeds off a living host
- 13. A type of disease that is caused by a pathogen
- 14. “____ ____ of defence” : Barriers that prevent pathogens from entering the body
- 18. An invasion of the body by pathogens that then multiply
- 19. A painful redness or swelling of part of the body
- 22. An organism that is too small to be seen with the naked eye
- 23. A microscopic organism or agent that causes disease
- 24. A simple, single-celled microbe without a nucleus
- 25. “____ ____ of defence” :General responses to pathogens inside the body
- 26. A sticky liquid that lines the nose, throat, lungs and intestines
Down
- 1. A white blood cell that engulfs and destroys pathogens
- 3. Microscopic hairs on cells that line the airways
- 5. A microscopic infectious agent made of genetic material and proteins
- 7. A type of disease that is not caused by a pathogen
- 8. A type of barrier that blocks or traps pathogens before they can enter the body
- 10. A medical condition with specific symptoms
- 11. “____ ____ of defence” :Responses to specific pathogens inside the body that build immunity
- 12. A white blood cell that produces proteins to attack pathogens
- 15. A type of disease that can spread from person to person by a pathogen
- 16. An increase in core body temperature over an extended time
- 17. A type of disease that cannot spread from person to person
- 20. The body system that prevents and fights disease
- 21. A protein that can identify and fight a specific pathogen