title: Electron microscopic studies on the folded chromosome of Escherichia coli.
mesh_terms: D002462:Cell Membrane; D002501:Centrifugation, Zonal; D002869:Chromosome Aberrations; D002876:Chromosomes, Bacterial / Q000032:analysis / Q000187:drug effects; D004269:DNA, Bacterial / Q000302:isolation & purification; D004277:DNA, Single-Stranded; D003851:Deoxyribonucleases / Q000494:pharmacology; D004926:Escherichia coli / Q000166:cytology*; D004996:Ethidium / Q000494:pharmacology; D008854:Microscopy, Electron; D008967:Molecular Biology; D010447:Peptide Hydrolases / Q000494:pharmacology; D012329:RNA, Bacterial / Q000302:isolation & purification
chemical_list: D004269:DNA, Bacterial; D004277:DNA, Single-Stranded; D012329:RNA, Bacterial; D003851:Deoxyribonucleases; D010447:Peptide Hydrolases; D004996:Ethidium