Ch. 6 Unit 2

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Author:
NurseJoy
ID:
261267
Filename:
Ch. 6 Unit 2
Updated:
2014-02-10 14:50:57
Tags:
Unit Microbiology
Folders:
Microbiology
Description:
An introduction to viruses
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  1. Virus
    • Non filterable
    • largest only the size of small bacteria
    • do not reproduce outside of host
    • not living organism
    • parasites in ALL types of cells
    • few antivirals
    • 3 types
    • animal, bacterial, and plant viruses
  2. Sx of virus
    • genetic material (either DNA OR RNA)
    • protein coat
  3. Multiplication cycles in animal viruses
    • absorption
    • penetration
    • uncoating
    • synthesis
    • assembly¬†
    • release
  4. culturing methods for viruses
    • laboratory animals
    • embryonic bird tissues
    • cell or tissue culture
  5. purpose for viral culturation
    • isolate and identify viruses in clinical specimens
    • to prepare viruses for vaccines
    • to do detailed research
  6. CPE
    • CytoPathic Effect
    • used to find Rabies¬†
    • you look for Negri Bodies
  7. Rapid identification of viral infections
    • Cytology
    • viral antigen
    • EM
    • Serology
  8. Cytology
    Pap smears, HSV, CMV, CPE
  9. Viral antigen
    you mix the virus and the antigen and if it clumps then the person has/had the virus
  10. EM
    Electron Microscope
  11. Serology
    They look to see if you produced the antigens for the viruses
  12. Prion
    • protein particle
    • causes mad cow and creutzfeldt jakob
  13. Satellite viruses
    • dependent on other viruses for replication
    • ex. when you have then Hep B virus you can also express the delta agent virus
  14. Viruses can cause
    • some cancers
    • upper and lower respiratory tract infections
    • sore throats MOST SORE THROATS ARE CAUSED BY VIRUSES
    • gastrointeritis
    • eye infections
  15. Rotavirus
    • infantile gastroeneritis
    • a common illness and death in developing countries

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