title: Chemonucleolysis--past and present.
mesh_terms: D001416:Back Pain / Q000188:drug therapy* / Q000601:surgery; D002917:Chymopapain / Q000008:administration & dosage* / Q000627:therapeutic use; D010450:Endopeptidases / Q000008:administration & dosage*; D006801:Humans; D007880:Legislation, Drug; D014481:United States; D014486:United States Food and Drug Administration
chemical_list: D010450:Endopeptidases; D002917:Chymopapain