title: Detection of small cryptic plasmids in Salmonella typhimurium strain LT2.
abstract: Small cryptic plasmids of molecular weights ranging from 1 to 3 Mdal were detected by electron microscopy in Salmonella typhimurium strain LT2 (ColIb). They were divided into different size classes. Two of the cryptic plasmids were transferred simultaneously with ColIb to Escherichia coli.
mesh_terms: D003086:Bacteriocin Plasmids; D003227:Conjugation, Genetic; D004269:DNA, Bacterial / Q000032:analysis; D004270:DNA, Circular / Q000032:analysis; D004926:Escherichia coli / Q000235:genetics; D008854:Microscopy, Electron; D008970:Molecular Weight; D009154:Mutation; D010957:Plasmids; D012486:Salmonella typhimurium / Q000032:analysis / Q000235:genetics*
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular