title: A preparative scale fractionation of ribosomal RNA from its precursors.
mesh_terms: D002852:Chromatography, Ion Exchange; D004586:Electrophoresis; D004926:Escherichia coli; D008722:Methods; D009154:Mutation; D012329:RNA, Bacterial / Q000302:isolation & purification*; D012965:Sodium Chloride; D014316:Tritium
chemical_list: D012329:RNA, Bacterial; D014316:Tritium; D012965:Sodium Chloride