title: Secondary structure in heterogeneous nuclear RNA: involvement of regions from repeated DNA sites.
mesh_terms: D000468:Alkalies; D001483:Base Sequence; D002467:Cell Nucleus / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002621:Chemistry; D004247:DNA; D006367:HeLa Cells; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D017955:Poliovirus; D012313:RNA / Q000032:analysis*; D012333:RNA, Messenger / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis; D012260:Ribonucleases; D014158:Transcription, Genetic; D014316:Tritium
chemical_list: D000468:Alkalies; D012333:RNA, Messenger; D012367:RNA, Viral; D014316:Tritium; D012313:RNA; D004247:DNA; D012260:Ribonucleases