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.
Mäthger LM, Hanlon RT.Mäthger LM, et al. Among authors: hanlon rt.Biol Lett. 2006 Dec 22;2(4):494-6. doi: 10.1098/rsbl.2006.0542.Biol Lett. 2006.PMID: 17148271Free PMC article.