1. The provirus integrates into the host genome and can remain latent for years before being activated.
这种嵌入宿主基因组的潜伏病毒可以在激活之前潜伏多年。

2. Researchers are studying the molecular mechanisms of provirus formation and how it contributes to viral persistence.
研究人员正在研究潜伏病毒形成的分子机制以及它对病毒持续感染的贡献。