title: Studies on spin-labeled polyriboadenylic acid.
mesh_terms: D000227:Adenine Nucleotides; D001665:Binding Sites; D004578:Electron Spin Resonance Spectroscopy; D011119:Polynucleotides; D012265:Ribonucleotides
chemical_list: D000227:Adenine Nucleotides; D011119:Polynucleotides; D012265:Ribonucleotides