title: In vivo cloning of DNA regions carrying mutations linked to selectable genes: application to mutations in the regulatory region of the Escherichia coli tryptophan operon.
mesh_terms: D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant / Q000378:metabolism*; D004926:Escherichia coli / Q000378:metabolism*; D005838:Genotype; D009154:Mutation; D009876:Operon; D010957:Plasmids; D012486:Salmonella typhimurium / Q000378:metabolism; D014364:Tryptophan / Q000096:biosynthesis*
chemical_list: D004274:DNA, Recombinant; D014364:Tryptophan; D004262:DNA Restriction Enzymes