Article
Investigation of specific substitutions in virulence genes characterizing phenotypic groups of low-virulence field strains of Listeria monocytogenes.
Applied and environmental microbiology - 1 Oct 2005
Roche S M, Gracieux P, Milohanic E, Albert I, Virlogeux-Payant I, Témoin S, Grépinet O, Kerouanton A, Jacquet C, Cossart P, Velge P
Abstract excerpt
Several models have shown that virulence varies from one strain of Listeria monocytogenes to another, but little is known about the cause of low virulence. Twenty-six field L. monocytogenes strains were shown to be of low virulence in a plaque-forming assay and in a subcutaneous inoculation test in mice. Using the results of cell infection assays and phospholipase activities, the low-virulence strains were...
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