title: Effect of pH on salicylic acid permeation through ethyl cellulose-PEG 4000 films.
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D010539:Permeability; D011092:Polyethylene Glycols; D012459:Salicylates
chemical_list: D008567:Membranes, Artificial; D012459:Salicylates; D011092:Polyethylene Glycols; D002482:Cellulose