title: DNA double helical fragment at atomic resolution.
mesh_terms: D001483:Base Sequence; D006860:Hydrogen Bonding; D007536:Isomerism; D009690:Nucleic Acid Conformation; D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides; D014961:X-Ray Diffraction
chemical_list: D009838:Oligodeoxyribonucleotides; D009841:Oligonucleotides