The role of microorganisms in experimental eustachian tube obstruction.
D000818:Animals; D004432:Ear, Middle / Q000033:anatomy & histology / Q000378:metabolism; D004848:Epithelium / Q000033:anatomy & histology / Q000378:metabolism; D005064:Eustachian Tube / Q000382:microbiology* / Q000503:physiopathology / Q000648:ultrastructure; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010033:Otitis Media / Q000209:etiology*; D010034:Otitis Media with Effusion / Q000209:etiology* / Q000503:physiopathology; D051381:Rats; D011919:Rats, Inbred Strains; D013047:Specific Pathogen-Free Organisms; D013997:Time Factors