title: The effect of some proteolytic enzymes on chromatin ultrastructure.
mesh_terms: D002843:Chromatin / Q000032:analysis*; D004247:DNA / Q000032:analysis; D005069:Evaluation Studies as Topic; D006651:Histocytochemistry; D008722:Methods; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D010434:Pepsin A; D059828:Plant Cells; D011402:Pronase; D013045:Species Specificity; D014357:Trypsin
chemical_list: D002843:Chromatin; D004247:DNA; D014357:Trypsin; D010434:Pepsin A; D011402:Pronase