1·Scientists estimate that 8.3 percent of the human genome can be traced back to retrovirus infections.
科学家们估计8.3%的人基因组可以追溯到逆转录病毒的感染。
2·Scientists wanted to know the structure of a protein-cutting enzyme produced by a retrovirus similar to HIV.
科学家想要知道一种类似艾滋病毒的逆转录病毒所产生的蛋白质切酶的结构。
3·The hereditary material of a retrovirus is a molecule called RNA, which is similar to, but distinct from, DNA.
逆转录病毒的遗传物质是RNA，一种类似但又区别于DNA的分子。
4·Thierry Heidmann of the Gustave Roussy Institute in France and his colleagues put the fossil virus hypothesis to a spectacular test: they tried to resurrect a dead retrovirus.
法国古斯塔夫roussy研究所的亨利·海德曼及其同事设计了令人惊叹的实验，他们试图复活逆转录病毒。
5·Objective To investigate the effectivness of recombined retrovirus vector in gene therapy.
目的探索逆转录病毒载体在基因治疗乙型肝炎中的应用。