title: Scientists study DNA technology for treating periodontal disease.
mesh_terms: D016301:Alveolar Bone Loss / Q000188:drug therapy*; D006133:Growth Substances / Q000627:therapeutic use*; D006801:Humans; D011994:Recombinant Proteins / Q000627:therapeutic use*
chemical_list: D006133:Growth Substances; D011994:Recombinant Proteins