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.
Nelson PT, Wang WX, Mao G, Wilfred BR, Xie K, Jennings MH, Gao Z, Wang X.Nelson PT, et al. Among authors: mao g.Nucleic Acids Res. 2011 Oct;39(18):8163-72. doi: 10.1093/nar/gkr532. Epub 2011 Jun 30.Nucleic Acids Res. 2011.PMID: 21724616Free PMC article.