title: Bypassing a positive regulator: isolation of a lambda mutant that does not require N product to grow.
mesh_terms: D001710:Biotin; D003090:Coliphages / Q000187:drug effects / Q000254:growth & development* / Q000302:isolation & purification; D003433:Crosses, Genetic; D003470:Culture Media; D004926:Escherichia coli / Q000254:growth & development; D005809:Genes, Regulator; D005827:Genetics, Microbial; D006146:Guanidines / Q000494:pharmacology; D009153:Mutagens; D009154:Mutation; D009603:Nitroso Compounds / Q000494:pharmacology; D011995:Recombination, Genetic; D014161:Transduction, Genetic
chemical_list: D003470:Culture Media; D006146:Guanidines; D009153:Mutagens; D009603:Nitroso Compounds; D001710:Biotin