title: Double-helical regions in nuclear precursor of mRNA (pre-mRNA).
mesh_terms: D000227:Adenine Nucleotides / Q000032:analysis; D000818:Animals; D001483:Base Sequence; D002286:Carcinoma, Ehrlich Tumor / Q000378:metabolism* / Q000473:pathology; D002467:Cell Nucleus / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D002850:Chromatography, Gel; D003593:Cytoplasm / Q000032:analysis; D006882:Hydroxyapatites; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D009994:Osmolar Concentration; D010759:Phosphorus Isotopes; D012333:RNA, Messenger; D012334:RNA, Neoplasm / Q000032:analysis*; D012260:Ribonucleases; D012265:Ribonucleotides / Q000032:analysis; D012964:Sodium; D013696:Temperature
chemical_list: D000227:Adenine Nucleotides; D006882:Hydroxyapatites; D010759:Phosphorus Isotopes; D012333:RNA, Messenger; D012334:RNA, Neoplasm; D012265:Ribonucleotides; D012964:Sodium; D012260:Ribonucleases