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1.Polysialic acid is a component of many viruses and plays a crucial role in their infection process.
聚糖酸是许多病毒的成分，在它们的感染过程中起着关键作用。
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2.The polysialic acid on the surface of the virus is what allows it to attach to host cells.
病毒表面的聚糖酸是它能够附着到宿主细胞上的原因。
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3. Polysialic acid has been shown to have antiviral properties, which could be useful in the development of new treatments for viral infections.
研究表明聚糖酸具有抗病毒性质，这可能有助于开发新的治疗病毒感染的新方法。