title: Integration and excision of polyoma virus genomes.
mesh_terms: D000818:Animals; D002472:Cell Transformation, Viral; D002478:Cells, Cultured; D004279:DNA, Viral / Q000235:genetics; D005814:Genes, Viral; D009154:Mutation; D011120:Polyomavirus / Q000235:genetics*; D051381:Rats; D011995:Recombination, Genetic; D014775:Virus Activation
chemical_list: D004279:DNA, Viral