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.
Félix MA, De Ley P, Sommer RJ, Frisse L, Nadler SA, Thomas WK, Vanfleteren J, Sternberg PW.Félix MA, et al. Among authors: sommer rj.Dev Biol. 2000 May 1;221(1):68-86. doi: 10.1006/dbio.2000.9665.Dev Biol. 2000.PMID: 10772792Free article.
Eizinger A, Sommer RJ.Eizinger A, et al. Among authors: sommer rj.Science. 1997 Oct 17;278(5337):452-5. doi: 10.1126/science.278.5337.452.Science. 1997.PMID: 9334302