Occult HBV strains are replication-competent in vitro, suggesting that host, rather than viral factors are responsible for cryptic HBV infection.
隐性HBV群在活体中有复制能力，表现隐性与宿主的自身情况有关，而不是与病毒因素有关。
2
Objective: To construct a replication-competent adenovirus vector carrying human endostatin gene, looking for an effective method for the therapy of colon cancer.
目的：构建携带内皮抑素基因的增殖型腺病毒载体，寻找结肠癌的有效治疗方法。
3
In order to use retroviral-mediated gene transfer technology in clinical application, retroviral vector must be of high titer and free of detectable replication-competent retroviruses.