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Across 2. Last name of the scientist that developed techniques for using tissues and membranes to grow viruses. 4. Last name of the scientist that proposed that a viral infection could hijack the control center of a cell. 5. Different types of hosts that a virus will infect. 8. Protein that is on the outside of a virus that is responsible for attaching to the host cell for entry. 9. Viral genetic material that resides in a host cell's chromosome. 10. Type of infection where the viral DNA lies quietly in the nucleus of cell; no new viral particles are produced. 11. Protein subunit that is used to build the capsid. 13. Abnormal appearance in the nucleus of cell infected with a DNA virus. Used as a diagnostic clue. 16. Refers to the specific kinds of cells in a host that a virus can infect. 17. Last name of the scientist that proposed lysogeny and gave the formal definition of a virus. 18. Type of infection where viral particles are continually being produced. 19. Type of virus that does not have a phospholipid bilary surrounding it. 20. Viral enzyme that incorporates viral genetic material into a host cell's chromosome.

Down 1. Viral enzyme that synthesizes DNA ,by complementary basepairing, using viral RNA as a guide. 3. Phospholipid bilayer that surrounds some viruses. 6. Protein molecule that has sugars attached to it. Found on the surface of a virus. 7. Viral release by exocytosis. 12. Mass of fused cells. Viral fusion protein causes neighboring cell's membranes to fuse. 14. Proteins produced and secreted by cells infected with a virus which stimulate production of antiviral proteins in neighboring cells. 15. Viral particle that is capable of infecting a cell.