title: Ordered and preferential initiation of ribosomal RNA synthesis in vitro.
mesh_terms: D002247:Carbon Isotopes; D004269:DNA, Bacterial / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D005815:Genetic Code; D066298:In Vitro Techniques; D007700:Kinetics; D009693:Nucleic Acid Hybridization; D009711:Nucleotides / Q000378:metabolism; D012316:RNA Nucleotidyltransferases / Q000378:metabolism*; D012335:RNA, Ribosomal / Q000032:analysis / Q000096:biosynthesis*; D013698:Templates, Genetic; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D004269:DNA, Bacterial; D009711:Nucleotides; D012335:RNA, Ribosomal; D014316:Tritium; D012316:RNA Nucleotidyltransferases