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.
Sibley LD, Mordue DG, Su C, Robben PM, Howe DK.Sibley LD, et al.Philos Trans R Soc Lond B Biol Sci. 2002 Jan 29;357(1417):81-8. doi: 10.1098/rstb.2001.1017.Philos Trans R Soc Lond B Biol Sci. 2002.PMID: 11839185Free PMC article.
Barragan A, Sibley LD.Barragan A, et al. Among authors: sibley ld.J Exp Med. 2002 Jun 17;195(12):1625-33. doi: 10.1084/jem.20020258.J Exp Med. 2002.PMID: 12070289Free PMC article.