HETEROGENEITY IN THE HEMAGGLUTINATING AGENT OF  JAPANESE B ENCEPHALITIS VIRUS.
D004660:Encephalitis; D004664:Encephalitis Virus, Japanese; D004668:Encephalitis Viruses; D004672:Encephalitis, Japanese; D006384:Hemagglutination; D006386:Hemagglutination Tests
ENCEPHALITIS VIRUSES; ENCEPHALITIS, JAPANESE B; HEMAGGLUTINATION