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Friday, February 28, 2014

Questions & Answer Practical-1

How are viruses cultivated in the lab?
          In cultured cell media
          In embryonated hen’s egg
          in laboratory animal
What are the different uses of Tissue Culture
          1-Isolation of different viruses.
          2- Characterization and identification of viruses.
          3- Propagation of viruses for antigen and vaccine production.
          4- Titration of viruses.
          5- Host for SNT, cell ELISA and FAT.
          6- Studying the viral cytopathogenecity.
          7- Studying the growth curve and multiplication cycle of different viruses.
          8- Preparation of monoclonal antibodies to a wide diversity of viral proteins.
          9- Invitro expression of viral proteins.
          10- Testing the antiviral activity of various chemicals and drugs.
What are the advantages of Tissue Culture
          Support growth of most viruses.
          2- Economic.
          3- No immune system.
          4- Low level of extraneous proteins so easy virus purification.
What are the disadvantages of Tissue Culture
          1-Latent infection.
          2- Difficult.
          3- Costs for establishing a tissue culture laboratory (Expensive).


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