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.
Midtgaard SF, Assenholt J, Jonstrup AT, Van LB, Jensen TH, Brodersen DE.Midtgaard SF, et al. Among authors: jensen th.Proc Natl Acad Sci U S A. 2006 Aug 8;103(32):11898-903. doi: 10.1073/pnas.0604731103. Epub 2006 Aug 1.Proc Natl Acad Sci U S A. 2006.PMID: 16882719Free PMC article.