Viruses

6. helps ensure that if someone is already exposed, they stay away from others.
8. DNA is added to the host cell's DNA and is c
9. surrounds the capsid and helps the virus enter cells
13. stimulates a host's immune system to mount defenses against the pathogen
14. An organism that can cause disease
15. A type of white blood cell that plays an essential role in the immune system
16. The resistance to an infectious disease
17. cycle of viral infection; results in replication of the virus and cell destruction
18. A specialized protein produced by the immune system that helps destroy disease-causing organisms.
19. A compound that inhibits the growth and reproduction of bacteria.
21. A viral infection causing small painful blisters and inflammation

1. A cell that a virus invades
2. to give someone a disease
3. A protein coat that may contain RNA or DNA but not both
4. The basic unit of all living things.
5. A pandemic results from an epidemic that has grown past geographic boundaries.
7. Virus that attacks and destroys the human immune system.
10. The complete elimination of a disease.
11. RNA virus that contains reverse transcriptase
12. A disease that can spread from person to person through direct or indirect transmission.
13. A tiny, nonliving particle that invades and then reproduces inside a living cell.
20. A poison that produces illness by affecting bodily functions.