title: Cloning of replication origins from the E. coli K12 chromosome.
mesh_terms: D002876:Chromosomes, Bacterial / Q000648:ultrastructure*; D004261:DNA Replication; D004262:DNA Restriction Enzymes / Q000378:metabolism; D004269:DNA, Bacterial / Q000235:genetics*; D004274:DNA, Recombinant; D004926:Escherichia coli / Q000235:genetics*; D005144:F Factor; D010957:Plasmids
chemical_list: D004269:DNA, Bacterial; D004274:DNA, Recombinant; D004262:DNA Restriction Enzymes