title: Temperature-dependent and amber copy mutants of plasmid R1drd-19 in Escherichia coli.
mesh_terms: D004261:DNA Replication; D004269:DNA, Bacterial / Q000235:genetics; D004270:DNA, Circular / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics*; D006321:Heart; D009154:Mutation; D010641:Phenotype; D011815:R Factors; D001618:beta-Lactamases / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular; D001618:beta-Lactamases