title: In-vitro studies of rat viruses. I. Effects of long-term culture.
mesh_terms: D000818:Animals; D002471:Cell Transformation, Neoplastic; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D006387:Hemagglutination, Viral; D051381:Rats; D014776:Virus Cultivation; D014780:Viruses / Q000254:growth & development / Q000302:isolation & purification* / Q000472:pathogenicity