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.
Whittaker CA, DeSimone DW.Whittaker CA, et al. Among authors: desimone dw.Development. 1993 Apr;117(4):1239-49. doi: 10.1242/dev.117.4.1239.Development. 1993.PMID: 8404528
Marsden M, DeSimone DW.Marsden M, et al. Among authors: desimone dw.Development. 2001 Sep;128(18):3635-47. doi: 10.1242/dev.128.18.3635.Development. 2001.PMID: 11566866