title: An electron microscopic comparison of transcription on linear and superhelical DNA.
mesh_terms: D001426:Bacterial Proteins; D003090:Coliphages; D004262:DNA Restriction Enzymes; D004270:DNA, Circular / Q000378:metabolism; D004279:DNA, Viral / Q000378:metabolism; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology; D006193:Haemophilus influenzae / Q000201:enzymology; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D013302:Streptomyces / Q000201:enzymology; D014158:Transcription, Genetic; D014764:Viral Proteins
chemical_list: D001426:Bacterial Proteins; D004270:DNA, Circular; D004279:DNA, Viral; D014764:Viral Proteins; D012321:DNA-Directed RNA Polymerases; D004262:DNA Restriction Enzymes