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Discussion

Interferon, added to normal cells in culture, is described as

  • A.protecting them from viral infection
  • B.killing the cells outright
  • C.increasing the yield of virus
  • D.acting only on bacteria

Answer: A

Interferon is a protein that puts uninfected cells into a state in which viral replication is resisted, which is why it acts broadly rather than against one agent. Alpha interferon has proved useful clinically in chronic hepatitis B and C.

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