title: Joint propagation of the  and  ' subunits of RNA polymerase in Escherichia coli.
mesh_terms: D001120:Arginine / Q000378:metabolism; D002247:Carbon Isotopes; D002499:Centrifugation, Density Gradient; D012321:DNA-Directed RNA Polymerases / Q000032:analysis / Q000096:biosynthesis*; D004926:Escherichia coli / Q000201:enzymology*; D007930:Leucine / Q000378:metabolism; D008970:Molecular Weight; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D014316:Tritium; D001120:Arginine; D012321:DNA-Directed RNA Polymerases; D007930:Leucine