title: [Studies on Echo 9 virus. 3. Studies on the genetic stability of serological properties of Echo 9 "hot" mutant].
mesh_terms: D000818:Animals; D029822:Enterovirus B, Human; D005815:Genetic Code; D005827:Genetics, Microbial; D000882:Haplorhini; D007668:Kidney; D012367:RNA, Viral / Q000032:analysis*; D014779:Virus Replication
chemical_list: D012367:RNA, Viral
vernacular_title: Badania wirusa Echo 9. 3. Badania nad genetyczna trwałościa serologicznych cech "goracego" mutant wirusa Echo 9.