title: Genetic changes in attenuated poliovirus strains cultivated on human intestine in vitro.
mesh_terms: D004352:Drug Resistance, Microbial; D005260:Female; D005827:Genetics, Microbial; D006146:Guanidines / Q000378:metabolism; D006801:Humans; D007422:Intestines / Q000196:embryology / Q000382:microbiology*; D008722:Methods; D017955:Poliovirus / Q000254:growth & development* / Q000472:pathogenicity; D011247:Pregnancy; D014776:Virus Cultivation
chemical_list: D006146:Guanidines