title: Localization of the leftmost initiation site for T7 late transcription, in vivo and in vitro.
mesh_terms: D002250:Carbon Radioisotopes; D003090:Coliphages / Q000201:enzymology*; D004267:DNA Viruses / Q000201:enzymology; D004279:DNA, Viral / Q000378:metabolism*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism*; D004926:Escherichia coli; D005796:Genes; D005838:Genotype; D009693:Nucleic Acid Hybridization; D010761:Phosphorus Radioisotopes; D012367:RNA, Viral / Q000096:biosynthesis* / Q000302:isolation & purification; D014158:Transcription, Genetic; D014316:Tritium
chemical_list: D002250:Carbon Radioisotopes; D004279:DNA, Viral; D010761:Phosphorus Radioisotopes; D012367:RNA, Viral; D014316:Tritium; D012321:DNA-Directed RNA Polymerases