title: [Scanning electron microscopy studies on spherical calcifications in dentin treated with a HCl-collagenase method].
mesh_terms: D002118:Calcium; D003094:Collagen; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure*; D006801:Humans; D006851:Hydrochloric Acid / Q000494:pharmacology; D003012:Microbial Collagenase / Q000494:pharmacology; D008855:Microscopy, Electron, Scanning; D014074:Tooth Calcification / Q000187:drug effects
chemical_list: D003094:Collagen; D003012:Microbial Collagenase; D006851:Hydrochloric Acid; D002118:Calcium