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.
Kraushaar U, Blanckenhorn WU.Kraushaar U, et al. Among authors: blanckenhorn wu.Evolution. 2002 Feb;56(2):307-21. doi: 10.1111/j.0014-3820.2002.tb01341.x.Evolution. 2002.PMID: 11926499