title: On the existence of an internal nuclear protein structure in HeLa cells.
mesh_terms: D000941:Antigens / Q000032:analysis; D002458:Cell Fractionation; D002467:Cell Nucleus / Q000032:analysis* / Q000648:ultrastructure; D055598:Chemical Phenomena; D002621:Chemistry; D005455:Fluorescent Antibody Technique; D006367:HeLa Cells; D006801:Humans; D008947:Mixed Connective Tissue Disease / Q000276:immunology; D011506:Proteins / Q000032:analysis*
chemical_list: D000941:Antigens; D011506:Proteins