title: Nalidixic acid for enrichment of auxotrophs in cultures of Salmonella typhimurium.
abstract: Nalidixic acid kills only growing cells of Salmonella typhimurium and can be used to enrich for auxotrophs in populations where prototrophs predominate.
mesh_terms: D002470:Cell Survival; D003470:Culture Media; D006639:Histidine / Q000378:metabolism; D009154:Mutation; D009268:Nalidixic Acid / Q000494:pharmacology*; D012486:Salmonella typhimurium / Q000187:drug effects / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism; D014466:Ultraviolet Rays
chemical_list: D003470:Culture Media; D009268:Nalidixic Acid; D006639:Histidine