viruses

2. a viral epidemic that wiped out 10% of Philadelphia's population in 1793
4. the insect that carried the yellow fever virus
7. the penetration of a virus or its nucleic acid into a host cell
8. a potentially fatal viral disease transmitted by the bite of an infected animal
9. the virus that causes AIDS
10. a virus that carries its genetic materials in the form of RNA
11. a condition that destroys the body's immune system
13. a virus that causes blistery sores all over the body
14. a tiny particle that contains nucleic acid encased in protein

1. a contagious viral infection that causes muscle aches, inflammation of the respiratory system, fever, and chills
3. a microscope that uses a beam of electrons to produce magnified images
5. the virus that causes the common cold
6. a virus that infects bacteria
7. these use a virus against itself, allowing a person to escape that illness in the future
12. trigger antibodies that fight infection