title: Formation and visualization of rings from eukaryotic DNA fragments.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000302:isolation & purification; D004269:DNA, Bacterial / Q000302:isolation & purification; D004270:DNA, Circular / Q000302:isolation & purification; D003851:Deoxyribonucleases; D003854:Deoxyribonucleotides / Q000032:analysis; D004229:Dithiothreitol; D004720:Endonucleases; D004926:Escherichia coli / Q000201:enzymology; D005092:Exonucleases; D006193:Haemophilus influenzae / Q000201:enzymology; D008623:Mercaptoethanol; D008722:Methods; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009841:Oligonucleotides / Q000032:analysis; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular; D003854:Deoxyribonucleotides; D009841:Oligonucleotides; D008623:Mercaptoethanol; D004247:DNA; D003851:Deoxyribonucleases; D004720:Endonucleases; D005092:Exonucleases; D004229:Dithiothreitol