Virology

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Across
  1. 1. ______ Viruses with only a protein capsid
  2. 2. ex: Prion disease
  3. 3. viruses are ______ entities
  4. 5. viral diseases can cause high rates of _______ and morbidity in animals and birds
  5. 6. virus that can infect neural cells. Infection may occur by neural or hematogenous spread
  6. 8. bubble of fat surrounding virus
  7. 13. Viral diseases can significantly impact _____ safety and security
  8. 16. viral structure resembling D&D dice
  9. 20. the affinity of a virus for a particular host tissue
  10. 21. the study of viruses and viral diseases
  11. 22. ________ Infection: latent or dormant for long periods, escaping detection by the host immune system
  12. 25. _______ infection: intensive shedding over short time period
  13. 26. Viruses rely on a _______ cell
  14. 27. The envelope is usually a lipid bilayer derived from the _______ cell
  15. 28. T/F Viruses possess standard cellular organelles
  16. 31. bursting that follows virus replication allowing release of new viruses
  17. 33. someone who studies viruses
  18. 37. Viruses contain _________ surrounded by a protein coat
  19. 39. the process of virus reproduction resembles an ____________
  20. 40. viruses that enter the central nervous system after infection of a peripheral site
  21. 41. the ability of some virus to alter their shape or size
  22. 43. This committee classifies viruses based off of: Nature of virus genome and genetic diversity, replication strategies, and morphology
  23. 44. not harmful to the host
  24. 45. Viral diseases that can be transmitted from animals to humans
  25. 46. programmed cell death
Down
  1. 1. viruses that cause disease of nervous tissue, manifested by neurological symptoms and death
  2. 4. ex: canine distemper
  3. 7. this is a way of measuring virulence
  4. 9. =Capsid+Genome
  5. 10. ______ Infection: if a number of organs or tissues are infected
  6. 11. trafficking cell used by virus to cross blood-tissue barrier
  7. 12. ________ Infection: infection spreads beyond the primary site of infection
  8. 14. cancer-causing virus
  9. 15. ______ Viremia: initial entry of virus into the blood
  10. 17. _______ Viremia: Virus has replicated/multiplied in major organs & once more entered the circulation
  11. 18. T/F Viruses cannot make energy or proteins by themselves
  12. 19. T/F Viruses have the genetic capability to partake in Binary fission
  13. 20. used by viruses to cross blood-brain barrier
  14. 22. viruses that can replicate in more than one host organ/tissue
  15. 23. persistent infections can be shed at lower ____ for months to years
  16. 24. _______ viruses: cause developmental defects of embryo or fetus after in-utero infection
  17. 28. T/F A virus with a higher lethal dose is more virulent
  18. 29. relative measure of the degree of pathogenicity of the infecting virus
  19. 30. viral structure resembling a tower
  20. 32. the dose of the virus required to cause death in 50% of animals
  21. 34. appear as spikes on the surface of the envelope
  22. 35. the amount that occurs by the virus is critical to virus transmission
  23. 36. Individual protein of the protein shell around a virus which are held together by non-covalent bonds
  24. 38. ______ Viruses that have an additional lipid layer
  25. 42. viral protein coat