title: The nature of surface enamel in human teeth.
mesh_terms: D002119:Calcium Carbonate / Q000032:analysis; D002712:Chlorides / Q000032:analysis; D002951:Citrates / Q000032:analysis; D003720:Densitometry; D003743:Dental Enamel / Q000032:analysis / Q000166:cytology; D003746:Dental Enamel Proteins / Q000032:analysis; D005459:Fluorides / Q000032:analysis; D006244:Hardness; D006801:Humans; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D012964:Sodium / Q000032:analysis; D013499:Surface Properties; D014131:Trace Elements / Q000032:analysis
chemical_list: D002712:Chlorides; D002951:Citrates; D003746:Dental Enamel Proteins; D014131:Trace Elements; D012964:Sodium; D002119:Calcium Carbonate; D005459:Fluorides