title: Selection and timing of replication of plasmids R1drd-19 and F'lac in Escherichia coli.
mesh_terms: D002452:Cell Count; D002453:Cell Cycle; D004261:DNA Replication; D004269:DNA, Bacterial / Q000235:genetics; D004926:Escherichia coli / Q000166:cytology / Q000235:genetics*; D007786:Lactose Factors; D010957:Plasmids; D011815:R Factors
chemical_list: D004269:DNA, Bacterial