title: The unwinding of circular deoxyribonucleic acid by phenanthridinium drugs: structure-activity relations for the intercalation reaction.
mesh_terms: D000588:Amines; D000818:Animals; D001435:Bacteriophages; D001966:Bromine; D002021:Buffers; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D004270:DNA, Circular; D003956:Dialysis; D004121:Dimethyl Sulfoxide; D004996:Ethidium / Q000494:pharmacology; D010617:Phenanthridines / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship; D013950:Thymus Gland; D014461:Ultracentrifugation
chemical_list: D000588:Amines; D002021:Buffers; D004270:DNA, Circular; D010617:Phenanthridines; D004996:Ethidium; D001966:Bromine; D004121:Dimethyl Sulfoxide