title: The change of the torsion of the DNA helix caused by intercalation. I. A discussion of the two different possibilities, winding or unwinding.
mesh_terms: D000166:Acridines; D001665:Binding Sites; D004247:DNA; D004996:Ethidium; D008961:Models, Structural; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D010617:Phenanthridines
chemical_list: D000166:Acridines; D010617:Phenanthridines; D004247:DNA; D004996:Ethidium