title: Reversion of virus-transformed cell lines: hyperploidy accompanies retention of viral genes.
mesh_terms: D000818:Animals; D002460:Cell Line; D002471:Cell Transformation, Neoplastic; D002875:Chromosomes; D006224:Cricetinae; D046508:Culture Techniques; D003582:Cytogenetics; D051379:Mice; D009858:Oncogenic Viruses; D011120:Polyomavirus; D011123:Polyploidy; D013539:Simian virus 40