Characterization of deoxyribonucleic acid from Yersinia pestis by ethidium bromide-cesium chloride density gradient centrifugation.
No plasmids were detected in cells of Yersinia pestis which were bacteriocinogenic and positive for three additional determinants of virulence known to be lost at high frequency.
D002499:Centrifugation, Density Gradient; D002586:Cesium; D002712:Chlorides; D004269:DNA, Bacterial / Q000032:analysis*; D004996:Ethidium; D005111:Extrachromosomal Inheritance; D005827:Genetics, Microbial; D013696:Temperature; D013936:Thymidine / Q000378:metabolism; D014316:Tritium; D014774:Virulence; D015010:Yersinia pestis / Q000032:analysis*
D002712:Chlorides; D004269:DNA, Bacterial; D014316:Tritium; D002586:Cesium; D004996:Ethidium; D013936:Thymidine