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.
Hatcher EL, Zhdanov SA, Bao Y, Blinkova O, Nawrocki EP, Ostapchuck Y, Schäffer AA, Brister JR.Hatcher EL, et al. Among authors: schaffer aa.Nucleic Acids Res. 2017 Jan 4;45(D1):D482-D490. doi: 10.1093/nar/gkw1065. Epub 2016 Nov 28.Nucleic Acids Res. 2017.PMID: 27899678Free PMC article.