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.
Brust-Mascher I, Scholey JM.Brust-Mascher I, et al. Among authors: scholey jm.Int Rev Cytol. 2007;259:139-72. doi: 10.1016/S0074-7696(06)59004-7.Int Rev Cytol. 2007.PMID: 17425941Review.