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.
Fleming A, Gerrelli D, Greene ND, Copp AJ.Fleming A, et al. Among authors: copp aj.Int J Dev Biol. 1997 Apr;41(2):199-212.Int J Dev Biol. 1997.PMID: 9184327Free article.Review.
Gerrelli D, Copp AJ.Gerrelli D, et al. Among authors: copp aj.Brain Res Dev Brain Res. 1997 Sep 20;102(2):217-24. doi: 10.1016/s0165-3806(97)00099-0.Brain Res Dev Brain Res. 1997.PMID: 9352104
Fleming A, Copp AJ.Fleming A, et al. Among authors: copp aj.Science. 1998 Jun 26;280(5372):2107-9. doi: 10.1126/science.280.5372.2107.Science. 1998.PMID: 9641914