title: Tandem chromosomal duplications in Salmonella typhimurium: fusion of histidine genes to novel promoters.
mesh_terms: D002869:Chromosome Aberrations; D002874:Chromosome Mapping; D002876:Chromosomes, Bacterial; D006639:Histidine / Q000096:biosynthesis*; D009876:Operon; D011995:Recombination, Genetic; D012486:Salmonella typhimurium / Q000235:genetics*; D014161:Transduction, Genetic
chemical_list: D006639:Histidine