title: A multisite-mutation map of the leucine operon of Salmonella typhimurium.
mesh_terms: D002874:Chromosome Mapping; D005787:Gene Frequency; D007930:Leucine / Q000096:biosynthesis*; D008967:Molecular Biology; D009154:Mutation; D009573:Nitrites / Q000494:pharmacology; D009876:Operon; D012486:Salmonella typhimurium / Q000187:drug effects / Q000378:metabolism*; D014161:Transduction, Genetic
chemical_list: D009573:Nitrites; D007930:Leucine