title: A tracer study on the permeability of the keratinized epithelium of rat gingiva.
mesh_terms: D000818:Animals; D002463:Cell Membrane Permeability; D004848:Epithelium / Q000648:ultrastructure; D005881:Gingiva / Q000648:ultrastructure*; D007633:Keratins / Q000378:metabolism*; D008854:Microscopy, Electron / Q000379:methods; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D007633:Keratins