Across
- 3. a contagious disease that can spread from person to person
- 4. immunity immunity developed over a person's lifetime
- 7. used as a vehicle to carry a particular DNA segment
- 8. protective proteins
- 9. when a disease affects the global population
- 11. a preparation that is used to stimulate the body's immune response
- 13. abnormal, pathogenic agents responsible for a variety of fatal diseases
- 14. a substance that causes your immune system to produce antibodies
Down
- 1. occurs when bacteria, fungi or virus enters a body and causes harm
- 2. organisms that are microscopic
- 5. immune system's reaction to harmful viruses
- 6. when a disease is widespread
- 10. an organism that causes diseases
- 12. an infectious microbe