title: Presence of a hypermodified nucleotide in HeLa cell 18 S and Saccharomyces carlsbergensis 17 S ribosomal RNAs.
mesh_terms: D001483:Base Sequence; D006367:HeLa Cells / Q000032:analysis; D008745:Methylation; D009711:Nucleotides / Q000032:analysis*; D012334:RNA, Neoplasm / Q000032:analysis*; D012335:RNA, Ribosomal / Q000032:analysis*; D012440:Saccharomyces / Q000032:analysis
chemical_list: D009711:Nucleotides; D012334:RNA, Neoplasm; D012335:RNA, Ribosomal