title: Partially supercoiled replication intermediates of R plasmid DNA are resistant to relaxation.
mesh_terms: D001426:Bacterial Proteins / Q000378:metabolism; D004261:DNA Replication; D004269:DNA, Bacterial / Q000096:biosynthesis*; D004352:Drug Resistance, Microbial; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D011485:Protein Binding; D011513:Proteus mirabilis; D011815:R Factors
chemical_list: D001426:Bacterial Proteins; D004269:DNA, Bacterial