title: Persistent respiratory virus infection in tracheal organ cultures.
mesh_terms: D000818:Animals; D002417:Cattle; D002923:Cilia; D046508:Culture Techniques; D004848:Epithelium; D007106:Immune Sera; D007372:Interferons / Q000032:analysis; D009975:Orthomyxoviridae / Q000302:isolation & purification; D018108:Respirovirus / Q000302:isolation & purification; D012229:Rhinovirus / Q000302:isolation & purification; D013552:Swine; D013997:Time Factors; D014132:Trachea / Q000382:microbiology* / Q000473:pathology; D014777:Virus Diseases / Q000503:physiopathology*
chemical_list: D007106:Immune Sera; D007372:Interferons