title: Cytological identification and characterization of the nuclear matrix.
mesh_terms: D000546:Amanitins / Q000494:pharmacology; D002460:Cell Line; D002467:Cell Nucleus / Q000032:analysis / Q000648:ultrastructure*; D002843:Chromatin / Q000648:ultrastructure; D006367:HeLa Cells; D010434:Pepsin A / Q000494:pharmacology; D011506:Proteins / Q000032:analysis*; D012260:Ribonucleases / Q000494:pharmacology; D013194:Staining and Labeling; D014357:Trypsin / Q000494:pharmacology
chemical_list: D000546:Amanitins; D002843:Chromatin; D011506:Proteins; D012260:Ribonucleases; D014357:Trypsin; D010434:Pepsin A