title: Size of the RNA's synthesized by purified calf thymus DNA-dependent RNA polymerases on SV40 DNA.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002417:Cattle; D002499:Centrifugation, Density Gradient; D004279:DNA, Viral; D012321:DNA-Directed RNA Polymerases; D004926:Escherichia coli / Q000201:enzymology; D008274:Magnesium; D008345:Manganese; D008970:Molecular Weight; D012367:RNA, Viral / Q000138:chemical synthesis; D013539:Simian virus 40; D013950:Thymus Gland / Q000201:enzymology*; D014316:Tritium
chemical_list: D002247:Carbon Isotopes; D004279:DNA, Viral; D012367:RNA, Viral; D014316:Tritium; D008345:Manganese; D012321:DNA-Directed RNA Polymerases; D008274:Magnesium