Chymopapain and chemonucleolysis.
D001416:Back Pain / Q000188:drug therapy*; D002908:Chronic Disease; D002917:Chymopapain / Q000008:administration & dosage* / Q000627:therapeutic use; D010450:Endopeptidases / Q000008:administration & dosage*; D006801:Humans; D014481:United States; D014486:United States Food and Drug Administration
D010450:Endopeptidases; D002917:Chymopapain