title: Isolation of a pure U1 snRNP from HeLa cells.
mesh_terms: D002467:Cell Nucleus / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D004591:Electrophoresis, Polyacrylamide Gel; D006367:HeLa Cells / Q000032:analysis; D006801:Humans; D008970:Molecular Weight; D009698:Nucleoproteins / Q000302:isolation & purification*; D012334:RNA, Neoplasm / Q000302:isolation & purification*; D012261:Ribonucleoproteins / Q000302:isolation & purification*
chemical_list: D009698:Nucleoproteins; D012334:RNA, Neoplasm; D012261:Ribonucleoproteins