title: The methylated nucleotide sequences in HELA cell ribosomal RNA and its precursors.
mesh_terms: D001345:Autoradiography; D001483:Base Sequence; D002250:Carbon Radioisotopes; D002458:Cell Fractionation; D005260:Female; D006367:HeLa Cells; D006801:Humans; D008745:Methylation; D010727:Phosphoric Diester Hydrolases; D010761:Phosphorus Radioisotopes; D012334:RNA, Neoplasm / Q000032:analysis*; D012335:RNA, Ribosomal / Q000032:analysis*; D012260:Ribonucleases
chemical_list: D002250:Carbon Radioisotopes; D010761:Phosphorus Radioisotopes; D012334:RNA, Neoplasm; D012335:RNA, Ribosomal; D012260:Ribonucleases; D010727:Phosphoric Diester Hydrolases