title: A comparison of gel electrophoresis and density gradient centrifugation of heterogeneous nuclear RNA.
mesh_terms: D002467:Cell Nucleus / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D004121:Dimethyl Sulfoxide; D004591:Electrophoresis, Polyacrylamide Gel; D005557:Formaldehyde; D006367:HeLa Cells / Q000032:analysis / Q000254:growth & development; D046911:Macromolecular Substances; D012334:RNA, Neoplasm / Q000302:isolation & purification*; D012335:RNA, Ribosomal / Q000032:analysis; D014316:Tritium
chemical_list: D046911:Macromolecular Substances; D012334:RNA, Neoplasm; D012335:RNA, Ribosomal; D014316:Tritium; D005557:Formaldehyde; D004121:Dimethyl Sulfoxide