title: The construction of lambda transducing phages containing deletions defining regulatory elements of the lac and trp operons in E. coli.
mesh_terms: D001483:Base Sequence; D003090:Coliphages; D004267:DNA Viruses; D004269:DNA, Bacterial; D004279:DNA, Viral; D004926:Escherichia coli / Q000378:metabolism*; D005796:Genes; D005809:Genes, Regulator; D007785:Lactose / Q000378:metabolism*; D008242:Lysogeny; D009876:Operon; D010641:Phenotype; D014161:Transduction, Genetic; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral; D014364:Tryptophan; D007785:Lactose