title: Demonstration of two cryptic plasmids in Salmonella pullorum MS53.
abstract: Two cryptic plasmids designated PO-1 and PO-2 that had molecular weights of 1.5 x 10(6) and 45 x 10(6) daltons, respectively, were isolated from Salmonella pullorum MS53. A 150 to 1 ratio of PO-1 to PO-2 plasmids was estimated to occur.
mesh_terms: D001965:Bromides; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D002501:Centrifugation, Zonal; D002586:Cesium; D002712:Chlorides; D002876:Chromosomes, Bacterial; D004269:DNA, Bacterial / Q000032:analysis / Q000302:isolation & purification*; D004996:Ethidium; D005827:Genetics, Microbial; D002479:Inclusion Bodies / Q000032:analysis; D008970:Molecular Weight; D012475:Salmonella / Q000032:analysis; D013395:Sucrose; D013936:Thymidine; D014316:Tritium
chemical_list: D001965:Bromides; D002247:Carbon Isotopes; D002712:Chlorides; D004269:DNA, Bacterial; D014316:Tritium; D002586:Cesium; D013395:Sucrose; D004996:Ethidium; D013936:Thymidine