title: Letter: Intradiscal enzyme for back pain.
mesh_terms: D001416:Back Pain / Q000188:drug therapy*; D002807:Chondroitin; D007267:Injections; D008722:Methods; D009088:Mucoproteins; D010447:Peptide Hydrolases / Q000008:administration & dosage / Q000627:therapeutic use*; D012585:Sciatica / Q000188:drug therapy
chemical_list: D009088:Mucoproteins; D002807:Chondroitin; D010447:Peptide Hydrolases