title: [Oncogenic viruses and the polyetiological theory of tumor development].
mesh_terms: D001354:Avian Leukosis Virus; D001358:Avian Sarcoma Viruses; D009369:Neoplasms / Q000209:etiology* / Q000635:transmission; D009858:Oncogenic Viruses; D014779:Virus Replication
vernacular_title: Onkogennye virusy i poliétiologicheskaia teoriia vozniknoveniia opukoleĭ