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.
Widmer RM, Lezzi M, Koller T.Widmer RM, et al.EMBO J. 1987 Mar;6(3):743-8. doi: 10.1002/j.1460-2075.1987.tb04816.x.EMBO J. 1987.PMID: 16453751Free PMC article.
Conconi A, Widmer RM, Koller T, Sogo JM.Conconi A, et al. Among authors: widmer rm.Cell. 1989 Jun 2;57(5):753-61. doi: 10.1016/0092-8674(89)90790-3.Cell. 1989.PMID: 2720786