title: Plasmids formed in nitrogen-fixing Escherichia coli-Klebsiella pneumoniae hybrids.
mesh_terms: D002499:Centrifugation, Density Gradient; D003090:Coliphages; D004269:DNA, Bacterial; D004270:DNA, Circular; D004352:Drug Resistance, Microbial; D004926:Escherichia coli; D005111:Extrachromosomal Inheritance; D005796:Genes; D008040:Genetic Linkage; D005827:Genetics, Microbial; D006824:Hybridization, Genetic; D007612:Kanamycin / Q000494:pharmacology; D007711:Klebsiella pneumoniae; D008854:Microscopy, Electron; D008967:Molecular Biology; D008970:Molecular Weight; D009586:Nitrogen Fixation; D010734:Phosphogluconate Dehydrogenase / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular; D007612:Kanamycin; D010734:Phosphogluconate Dehydrogenase