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.
Gong Q, Chen H, Farbman AI.Gong Q, et al. Among authors: chen h.Dev Dyn. 2009 Jul;238(7):1768-76. doi: 10.1002/dvdy.22005.Dev Dyn. 2009.PMID: 19517566Free PMC article.
Sadrian B, Chen H, Gong Q.Sadrian B, et al. Among authors: chen h.J Vis Exp. 2011 May 22;(51):2951. doi: 10.3791/2951.J Vis Exp. 2011.PMID: 21633336Free PMC article.
Chen H, Duncan IC, Bozorgchami H, Lo SH.Chen H, et al.Proc Natl Acad Sci U S A. 2002 Jan 22;99(2):733-8. doi: 10.1073/pnas.022518699. Epub 2002 Jan 15.Proc Natl Acad Sci U S A. 2002.PMID: 11792844Free PMC article.