STUDY OF THE VIRULENCE OF TICK-BORNE ENCEPHALITIS VIRUS. II. PATHOGENETIC PROPERTIES OF TWO VARIANTS OF A SINGLE VIRUS STRAIN.
D004668:Encephalitis Viruses; D004669:Encephalitis Viruses, Tick-Borne; D051379:Mice; D012106:Research; D046509:Tissue Culture Techniques; D014774:Virulence; D014776:Virus Cultivation
ENCEPHALITIS VIRUSES; EXPERIMENTAL LAB STUDY; MICE; TISSUE CULTURE; VIRUS CULTIVATION