title: Construction and fine mapping of recombinant plasmids containing the rrnB ribosomal RNA operon of E. coli.
mesh_terms: D001483:Base Sequence; D002874:Chromosome Mapping; D004269:DNA, Bacterial / Q000032:analysis; D004926:Escherichia coli / Q000235:genetics*; D009876:Operon; D010957:Plasmids; D012335:RNA, Ribosomal / Q000235:genetics*; D012343:RNA, Transfer / Q000235:genetics
chemical_list: D004269:DNA, Bacterial; D012335:RNA, Ribosomal; D012343:RNA, Transfer