title: Genetic characteristics of echovirus type 9 strains: selection and characterization of variants.
mesh_terms: D000535:Aluminum / Q000494:pharmacology; D000818:Animals; D001769:Blood; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D029822:Enterovirus B, Human / Q000302:isolation & purification* / Q000472:pathogenicity; D014644:Genetic Variation; D005827:Genetics, Microbial; D000882:Haplorhini; D006358:Hot Temperature; D006801:Humans; D008722:Methods; D051379:Mice; D012641:Selection, Genetic; D013696:Temperature; D014776:Virus Cultivation
chemical_list: D000535:Aluminum