DNA, SuperhelicalNucleic Acid ConformationDNA, CircularDNA Topoisomerases, Type IEthidiumOsmium TetroxidePlasmidsDNA, ViralEnergy MetabolismSimian virus 40Lipid MetabolismElectrophoresis, Agar GelEscherichia coliDNAEndonucleasesDeoxyribonucleasesColiphagesSingle-Strand Specific DNA and RNA EndonucleasesKineticsBase SequenceNucleic Acid DenaturationCarbodiimidesOsmolar ConcentrationHistonesDeoxyribonucleoproteinsPolydeoxyribonucleotidesMolecular Sequence DataBromosuccinimideDNA, BacterialDNA, Single-StrandedMetabolismNucleosomesTyrothricinCentrifugation, Density GradientGlucoseAcetaldehydeNucleoproteinsNovobiocinSodium ChlorideProtein Binding