title: Studies on nuclei of Paramecium aurelia. I. Isolation and purification by continuous or discontinuous sucrose gradient centrifugation and biochemical composition.
mesh_terms: D000818:Animals; D002458:Cell Fractionation; D002467:Cell Nucleus / Q000032:analysis; D002499:Centrifugation, Density Gradient; D003470:Culture Media; D004247:DNA / Q000032:analysis; D008854:Microscopy, Electron; D010247:Paramecium / Q000032:analysis* / Q000254:growth & development; D011506:Proteins / Q000032:analysis; D012313:RNA / Q000032:analysis
chemical_list: D003470:Culture Media; D011506:Proteins; D012313:RNA; D004247:DNA