A transmissible resistance element from a strain of Pseudomonas aeruginosa containing no detectable extrachromosomal DNA.

Carbenicillin/pharmacology Carbon Isotopes Centrifugation, Density Gradient Chromosomes, Bacterial Clone Cells DNA, Bacterial Escherichia coli/drug effects Extrachromosomal Inheritance Genetics, Microbial Kanamycin/pharmacology Neomycin/pharmacology Nucleic Acid Hybridization Penicillin Resistance Penicillinase/biosynthesis Phosphorus Isotopes Proteus mirabilis/drug effects Pseudomonas aeruginosa/metabolism Sodium Dodecyl Sulfate/pharmacology Tetracycline/pharmacology Tritium

Carbon Isotopes DNA, Bacterial Phosphorus Isotopes Tritium Sodium Dodecyl Sulfate Kanamycin Penicillinase Tetracycline Carbenicillin Neomycin