title: Chemical synthesis and biological studies on mutated gene-control regions.
mesh_terms: D001483:Base Sequence; D004247:DNA / Q000138:chemical synthesis*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D005796:Genes; D007202:Indicators and Reagents; D007763:Lac Operon; D009154:Mutation; D014158:Transcription, Genetic
chemical_list: D007202:Indicators and Reagents; D004247:DNA; D012321:DNA-Directed RNA Polymerases