title: Messenger activity of nascent ribosomal RNA.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D002247:Carbon Isotopes; D002474:Cell-Free System; D002499:Centrifugation, Density Gradient; D002701:Chloramphenicol; D003470:Culture Media; D004589:Electrophoresis, Disc; D004926:Escherichia coli; D009693:Nucleic Acid Hybridization; D010452:Peptide Biosynthesis; D010710:Phosphates; D010759:Phosphorus Isotopes; D014176:Protein Biosynthesis; D012329:RNA, Bacterial; D012333:RNA, Messenger / Q000032:analysis*; D012335:RNA, Ribosomal / Q000032:analysis* / Q000302:isolation & purification; D012270:Ribosomes / Q000032:analysis; D013698:Templates, Genetic; D014316:Tritium; D014633:Valine
chemical_list: D000596:Amino Acids; D002247:Carbon Isotopes; D003470:Culture Media; D010710:Phosphates; D010759:Phosphorus Isotopes; D012329:RNA, Bacterial; D012333:RNA, Messenger; D012335:RNA, Ribosomal; D014316:Tritium; D002701:Chloramphenicol; D014633:Valine