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Which best describes viral tropism?

  • A.The tissues a virus can infect
  • B.The speed at which a virus replicates
  • C.The size of the viral genome
  • D.The stability of the virion

Answer: A

Tropism is the preference of a virus for particular cells or tissues, and it usually traces back to receptor distribution together with whether the cell supports the rest of the cycle. It explains why one virus causes hepatitis and another a respiratory illness.

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