title: Physical studies of the drug-resistance transfer factor in Proteus.
abstract: The transfer unit, RTF, derived from an R factor has been transferred to Proteus mirabilis and characterized physiochemically.
mesh_terms: D002118:Calcium; D002499:Centrifugation, Density Gradient; D002725:Chloroform; D003227:Conjugation, Genetic; D003470:Culture Media; D004269:DNA, Bacterial / Q000032:analysis*; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000254:growth & development; D005827:Genetics, Microbial; D008970:Molecular Weight; D009154:Mutation; D011511:Proteus / Q000032:analysis / Q000187:drug effects* / Q000254:growth & development; D013395:Sucrose; D014461:Ultracentrifugation
chemical_list: D003470:Culture Media; D004269:DNA, Bacterial; D013395:Sucrose; D002725:Chloroform; D002118:Calcium