title: Genetic analysis of the histidine operon in Escherichia coli K12.
mesh_terms: D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D003227:Conjugation, Genetic; D004926:Escherichia coli; D005816:Genetic Complementation Test; D006639:Histidine / Q000096:biosynthesis*; D008967:Molecular Biology; D009154:Mutation / Q000528:radiation effects; D009876:Operon; D011995:Recombination, Genetic; D012486:Salmonella typhimurium
chemical_list: D006639:Histidine