title: Double drug-dependence in a poliovirus strain.
mesh_terms: D005827:Genetics, Microbial; D006146:Guanidines / Q000494:pharmacology*; D009154:Mutation; D017955:Poliovirus / Q000187:drug effects*; D011743:Pyrimidines / Q000494:pharmacology*; D011995:Recombination, Genetic; D010948:Viral Plaque Assay; D014776:Virus Cultivation
chemical_list: D006146:Guanidines; D011743:Pyrimidines