“…Each sample was centrifuged at 750 x g in a refrigerated centrifuge at l0 oC, and the serum-diluent mixture was stored r 986 at -56 'C. All specimens \l'ere tested for hemagglutination inhibition (HI) antibody to EEE virus at the NewJersey State Health Laboratories by the methods of Goldfield et al (1968). Blood samples that showed a 4-fold rise in HI titer were deemed potential positives and were tested for EEE neutralizing antibody in recently weaned mice.…”
“…Each sample was centrifuged at 750 x g in a refrigerated centrifuge at l0 oC, and the serum-diluent mixture was stored r 986 at -56 'C. All specimens \l'ere tested for hemagglutination inhibition (HI) antibody to EEE virus at the NewJersey State Health Laboratories by the methods of Goldfield et al (1968). Blood samples that showed a 4-fold rise in HI titer were deemed potential positives and were tested for EEE neutralizing antibody in recently weaned mice.…”
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