Restriction map of the Salmonella enteritidis virulence plasmid and its homology with the plasmid of Salmonella typhimurium.

A restriction map of the 61 kb virulence plasmid of Salmonella enteritidis was constructed and compared with the Salmonella typhimurium virulence plasmid map. Polymerase chain reaction was used to detect a region homologous to rck gene in the S. enteritidis plasmid which was localized in the map by hybridization. Regions homologous to traT and vagD/vagC loci were not detected in this plasmid by this method.