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Q.

Explain the mechanism by which HIV multiplies and leads to AIDS.

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Detailed Solution

  • HIV infects TH cells, macrophages and dendritic cells.
  • The ss RNA of HIV is converted into viral DNA by reverse transcriptase. The viral DNA is introduced into host cell DNA by integrase enzyme.
  • Then viral DNA transcribes RNA and RNA is translated into viral proteins.
  • Various viral particles are assembled and HIV are bud off from the host cell and TH cells are
    destroyed.
  • The progressive decrease in the number of TH cells leads to AIDS (Acquired Immuno Deficiency Syndrome).
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