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.
Santiago-Medina M, Gregus KA, Nichol RH, O'Toole SM, Gomez TM.Santiago-Medina M, et al. Among authors: nichol rh.Development. 2015 Feb 1;142(3):486-96. doi: 10.1242/dev.108266. Epub 2015 Jan 6.Development. 2015.PMID: 25564649Free PMC article.