Abstract
Forty-two Shigella and 29 Escherichia coli strains were screened for invasiveness in the Sereny test and for hybridization with two recently described DNA probes for the invasiveness plasmid. Both probes produced identical results. All Sereny-positive strains hybridized with both DNA probes. Three Sereny-negative strains also hybridized with the probes, suggesting that there are strains containing the invasiveness plasmid that are not pathogenic in animal models.
MeSH Terms
Animals
DNA, Bacterial/analysis
Escherichia coli/genetics,isolation & purification,pathogenicity
Guinea Pigs
Humans
Nucleic Acid Hybridization
Plasmids
Shigella/genetics,isolation & purification,pathogenicity
Shigella boydii/genetics,isolation & purification,pathogenicity
Shigella dysenteriae/genetics,isolation & purification,pathogenicity
Shigella flexneri/genetics,isolation & purification,pathogenicity
Shigella sonnei/genetics,isolation & purification,pathogenicity
Virulence
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Wood P K
Morris J G
Small P L
Sethabutr O
Toledo M R
Trabulsi L
Kaper J B
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