title: The origin of collagenase in periodontal tissues of man.
mesh_terms: D046508:Culture Techniques; D004586:Electrophoresis; D005782:Gels; D005881:Gingiva / Q000201:enzymology*; D006801:Humans; D003012:Microbial Collagenase / Q000096:biosynthesis*; D008854:Microscopy, Electron; D014783:Viscosity
chemical_list: D005782:Gels; D003012:Microbial Collagenase