Segregation of mouse virulent and avirulent ECHO virus type 9 strains and the correlation of mouse-virulence with the "temperature" (rct/40) marker.
D000818:Animals; D003588:Cytopathogenic Effect, Viral; D029822:Enterovirus B, Human / Q000302:isolation & purification / Q000472:pathogenicity*; D006801:Humans; D008581:Meningitis / Q000382:microbiology*; D051379:Mice; D012703:Serotyping; D013696:Temperature; D014774:Virulence