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.
El-Alfy M, Pelletier G, Hermo LS, Labrie F.El-Alfy M, et al.Microsc Res Tech. 2000 Dec 1;51(5):436-46. doi: 10.1002/1097-0029(20001201)51:5<436::AID-JEMT6>3.0.CO;2-T.Microsc Res Tech. 2000.PMID: 11074614