An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Zhao KN, Frazer IH, Jun Liu W, Williams M, Zhou J.Zhao KN, et al.Virology. 1999 Jun 20;259(1):211-8. doi: 10.1006/viro.1999.9714.Virology. 1999.PMID: 10364505Free article.
Liu WJ, Liu XS, Zhao KN, Leggatt GR, Frazer IH.Liu WJ, et al. Among authors: zhao kn.Virology. 2000 Aug 1;273(2):374-82. doi: 10.1006/viro.2000.0435.Virology. 2000.PMID: 10915608Free article.
Liu Y, Frazer IH, Liu WJ, Liu XS, McMillan N, Zhao KN.Liu Y, et al. Among authors: zhao kn.Appl Microbiol Biotechnol. 2001 Jul;56(1-2):150-6. doi: 10.1007/s002530100655.Appl Microbiol Biotechnol. 2001.PMID: 11499923