title: Preparation of a circular bihelical deoxyribonucleic acid containing repeating dinucleotide sequences.
mesh_terms: D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D002586:Cesium; D055598:Chemical Phenomena; D002621:Chemistry; D002712:Chlorides; D003090:Coliphages / Q000201:enzymology; D003500:Cyclization; D003597:Cytosine Nucleotides; D004247:DNA / Q000032:analysis; D004254:DNA Nucleotidyltransferases; D003851:Deoxyribonucleases; D003854:Deoxyribonucleotides; D004926:Escherichia coli / Q000201:enzymology; D006150:Guanine Nucleotides; D008025:Ligases; D008722:Methods; D008854:Microscopy, Electron; D008956:Models, Chemical; D008970:Molecular Weight; D009711:Nucleotides; D010759:Phosphorus Isotopes; D011108:Polymers; D011119:Polynucleotides / Q000032:analysis; D013395:Sucrose; D013941:Thymine; D013942:Thymine Nucleotides; D014316:Tritium
chemical_list: D002712:Chlorides; D003597:Cytosine Nucleotides; D003854:Deoxyribonucleotides; D006150:Guanine Nucleotides; D009711:Nucleotides; D010759:Phosphorus Isotopes; D011108:Polymers; D011119:Polynucleotides; D013942:Thymine Nucleotides; D014316:Tritium; D002586:Cesium; D013395:Sucrose; D004247:DNA; D004254:DNA Nucleotidyltransferases; D003851:Deoxyribonucleases; D008025:Ligases; D013941:Thymine