title: Determining the presence and origin of collagenase in human periapical lesions.
mesh_terms: D000539:Alveolar Process / Q000201:enzymology; D001419:Bacteria / Q000201:enzymology; D004591:Electrophoresis, Polyacrylamide Gel; D006801:Humans; D003012:Microbial Collagenase / Q000032:analysis* / Q000378:metabolism; D010483:Periapical Diseases / Q000201:enzymology*; D010513:Periodontal Ligament / Q000201:enzymology
chemical_list: D003012:Microbial Collagenase