title: Transcription of superhelical DNA from cell nuclei.
mesh_terms: D002460:Cell Line; D002467:Cell Nucleus / Q000378:metabolism*; D004270:DNA, Circular / Q000378:metabolism*; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D004996:Ethidium / Q000494:pharmacology; D005720:Gamma Rays; D006367:HeLa Cells; D007700:Kinetics; D009690:Nucleic Acid Conformation; D012313:RNA / Q000096:biosynthesis*; D012293:Rifampin / Q000494:pharmacology; D012965:Sodium Chloride / Q000494:pharmacology; D013347:Subcellular Fractions / Q000378:metabolism*; D013698:Templates, Genetic; D014158:Transcription, Genetic / Q000187:drug effects / Q000528:radiation effects
chemical_list: D004270:DNA, Circular; D012965:Sodium Chloride; D012313:RNA; D012321:DNA-Directed RNA Polymerases; D004996:Ethidium; D012293:Rifampin