title: Formation of psi (+) and psi (-) DNA.
mesh_terms: D002942:Circular Dichroism; D004247:DNA; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides; D013329:Structure-Activity Relationship
chemical_list: D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides; D004247:DNA