Nomenclature Committee of the International Union of Biochemistry (NC-IUB). Nomenclature for incompletely specified bases in nucleic acid sequences. Recommendations 1984.
D001483:Base Sequence; D001669:Biochemical Phenomena; D001671:Biochemistry; D004247:DNA; D009696:Nucleic Acids; D011687:Purines; D011743:Pyrimidines; D012313:RNA; D012958:Societies, Scientific; D009626:Terminology as Topic
D009696:Nucleic Acids; D011687:Purines; D011743:Pyrimidines; D012313:RNA; D004247:DNA