title: Isolation of a presumably new virus from unengorged Ixodes ricinus ticks.
mesh_terms: D000818:Animals; D001103:Arboviruses / Q000302:isolation & purification*; D003588:Cytopathogenic Effect, Viral; D003604:Czechoslovakia; D004199:Disease Vectors; D004671:Encephalitis, Arbovirus / Q000453:epidemiology; D013987:Ticks