title: [Effect of prolonged passage of cells of hamster tumors induced by simian virus 40 on the isolation of the oncogenic virus and superinfection].
mesh_terms: D000818:Animals; D006224:Cricetinae; D046508:Culture Techniques; D009374:Neoplasms, Experimental; D013539:Simian virus 40 / Q000302:isolation & purification*; D014776:Virus Cultivation
vernacular_title: Vliianie dlitel'nogo passirovaniia kletok opukholeĭ khomiakov, indutsirovannykh obez'ian virusom 40, na izoliatsiiu onkogennogo virusa i superinfektsiiu.