title: PROTON MAGNETIC RESONANCE OF PURINE AND PYRIMIDINE DERIVATIVES. XI. PROTON MAGNETIC RESONANCE STUDIES OF NUCLEOTIDE INTERACTIONS.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D006859:Hydrogen; D008280:Magnetics; D009584:Nitrogen; D009711:Nucleotides; D011522:Protons; D011687:Purines; D011743:Pyrimidines
chemical_list: D009711:Nucleotides; D011522:Protons; D011687:Purines; D011743:Pyrimidines; D006859:Hydrogen; D009584:Nitrogen; C030985:purine
keywords: CHEMISTRY, PHYSICAL; ELECTRON SPIN RESONANCE; ELECTRONS; HYDROGEN; MAGNETICS; NITROGEN; NUCLEOTIDES