title: [Mass-spectrometric study of trimers of nucleic acid nitrogen bases].
mesh_terms: D000225:Adenine / Q000031:analogs & derivatives; D055598:Chemical Phenomena; D002621:Chemistry; D003596:Cytosine / Q000031:analogs & derivatives; D013058:Mass Spectrometry; D009696:Nucleic Acids; D013941:Thymine / Q000031:analogs & derivatives; D014498:Uracil / Q000031:analogs & derivatives
chemical_list: D009696:Nucleic Acids; D014498:Uracil; D003596:Cytosine; D000225:Adenine; D013941:Thymine
vernacular_title: Mass-spektrometricheskoe izuchenie trimerov azotistykh osnovaniĭ nukleinovykh kislot