title: Accumulation of closed-circular polyoma DNA molecules containing host DNA during serial passage of the virus.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D002478:Cells, Cultured / Q000032:analysis*; D004247:DNA / Q000032:analysis*; D004270:DNA, Circular / Q000032:analysis*; D004279:DNA, Viral / Q000032:analysis*; D007668:Kidney; D051379:Mice; D009693:Nucleic Acid Hybridization; D011120:Polyomavirus / Q000032:analysis* / Q000254:growth & development; D013936:Thymidine; D013997:Time Factors; D014316:Tritium
chemical_list: D004270:DNA, Circular; D004279:DNA, Viral; D014316:Tritium; D004247:DNA; D013936:Thymidine