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.
Echevarría-Machado I, Martínez-Estévez M, Muñoz-Sánchez JA, Loyola-Vargas VM, Hernández-Sotomayor SM, De Los Santos-Briones C.Echevarría-Machado I, et al.Mol Biotechnol. 2007 Mar;35(3):297-309. doi: 10.1007/BF02686015.Mol Biotechnol. 2007.PMID: 17652793