title: Escherichia coli strains with modified RNase II activity: isolation and properties.
mesh_terms: D002247:Carbon Isotopes; D004926:Escherichia coli / Q000201:enzymology* / Q000254:growth & development; D009154:Mutation; D010649:Phenylalanine / Q000378:metabolism; D012260:Ribonucleases / Q000032:analysis*; D014161:Transduction, Genetic
chemical_list: D002247:Carbon Isotopes; D010649:Phenylalanine; D012260:Ribonucleases