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.
Lang AE, Lundquist EA.Lang AE, et al. Among authors: lundquist ea.J Dev Biol. 2021 Feb 19;9(1):7. doi: 10.3390/jdb9010007.J Dev Biol. 2021.PMID: 33669899Free PMC article.