title: Subnuclear particles containing a small nuclear RNA and heterogeneous nuclear RNA.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure; D002500:Centrifugation, Isopycnic; D004492:Edetic Acid; D004591:Electrophoresis, Polyacrylamide Gel; D006367:HeLa Cells; D006801:Humans; D008970:Molecular Weight; D009994:Osmolar Concentration; D012313:RNA; D012332:RNA, Heterogeneous Nuclear; D012260:Ribonucleases / Q000378:metabolism; D012261:Ribonucleoproteins
chemical_list: D012332:RNA, Heterogeneous Nuclear; D012261:Ribonucleoproteins; D012313:RNA; D004492:Edetic Acid; D012260:Ribonucleases