title: Histopathological study of the bismuth line formation in rat gingiva.
mesh_terms: D000818:Animals; D001729:Bismuth / Q000032:analysis*; D005881:Gingiva / Q000648:ultrastructure*; D051381:Rats; D013455:Sulfur / Q000032:analysis
chemical_list: D013455:Sulfur; D001729:Bismuth