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.
Calderwood SB, Auclair F, Donohue-Rolfe A, Keusch GT, Mekalanos JJ.Calderwood SB, et al.Proc Natl Acad Sci U S A. 1987 Jul;84(13):4364-8. doi: 10.1073/pnas.84.13.4364.Proc Natl Acad Sci U S A. 1987.PMID: 3299365Free PMC article.
Levine MM, McEwen J, Losonsky G, Reymann M, Harari I, Brown JE, Taylor DN, Donohue-Rolfe A, Cohen D, Bennish M, et al.Levine MM, et al.J Clin Microbiol. 1992 Jul;30(7):1636-41. doi: 10.1128/jcm.30.7.1636-1641.1992.J Clin Microbiol. 1992.PMID: 1629317Free PMC article.