Across
- 3. chemical compounds that are known to cause cancer
- 7. injection of a weakened form of a pathogen to produce immunity
- 10. proteins that recognize and bind to antigens
- 11. anything that increases the chance of disease or injury
- 13. the chemicals that the activated mast cells release
- 14. any change in the body, other than an injury, that disrupts the normal functions of the body
- 16. animals that carry pathogens from person to person
Down
- 1. common overreactions of the immune system to antigens
- 2. viruses, bacteria, and other pathogens may serve as antigens
- 4. compounds that kill bacteria without harming the cells of the human or animal hosts
- 5. increased body temperature
- 6. disease causing agents
- 8. formation of a mass of growing tissue
- 9. chronic respiratory disease in which the air passages become narrower than normal
- 12. group of proteins that help
- 15. fighting the infection through the production of cells that inactivate foreign substances or cells