title: [Study of the permeability of the crevicular epithelium by fluorescein essece (fluorescein sodium) (author's own study)].
mesh_terms: D004848:Epithelium / Q000648:ultrastructure; D005452:Fluoresceins; D005881:Gingiva / Q000648:ultrastructure*; D005883:Gingival Crevicular Fluid / Q000032:analysis; D005891:Gingivitis / Q000473:pathology*; D006801:Humans; D009061:Mouth Mucosa / Q000648:ultrastructure
chemical_list: D005452:Fluoresceins