title: [Problems control of avian tumor viruses and viral vaccines].
mesh_terms: D001355:Alpharetrovirus / Q000472:pathogenicity*; D009369:Neoplasms / Q000517:prevention & control; D009858:Oncogenic Viruses / Q000472:pathogenicity*; D014765:Viral Vaccines / Q000009:adverse effects*
chemical_list: D014765:Viral Vaccines
vernacular_title: Az avian tumor virusok és a virusvaccinák ellenörzésének problémái.