[Characterization of enterotoxigenic Escherichia coli of bovine origin by DNA-DNA colony hybridization].
DNA-DNA colony hybridizations with a ST1a probe were done on bovine enterotoxigenic Escherichia coli strains and compared with the suckling mouse test. The results show that one fourth (7/24) of the strains positive in the baby mouse test do not hybridize the ST1a probe and suggest the existence of another or other toxins among the bovine enterotoxigenic E. coli strains.
D000818:Animals; D001345:Autoradiography; D001427:Bacterial Toxins; D001681:Biological Assay; D002417:Cattle / Q000382:microbiology*; D004269:DNA, Bacterial / Q000032:analysis*; D004270:DNA, Circular / Q000032:analysis*; D004591:Electrophoresis, Polyacrylamide Gel; D004768:Enterotoxins / Q000032:analysis* / Q000235:genetics; D004926:Escherichia coli / Q000032:analysis* / Q000235:genetics; D029968:Escherichia coli Proteins; D051379:Mice; D009693:Nucleic Acid Hybridization
D001427:Bacterial Toxins; D004269:DNA, Bacterial; D004270:DNA, Circular; D004768:Enterotoxins; D029968:Escherichia coli Proteins; C034151:heat stable toxin (E coli)
Caractérisation d'Escherichia coli entérotoxiques d'origine bovine par hybridation ADN-ADN sur colonies.