Cytopathogenic activity by egg adapted strains of bluetongue virus for sheep
kidney cells in culture, and the neutralization of this activity by homologous antiserum
are described. The possible applications of this phenomenon to studies on
various phases of bluetongue is discussed briefly. Reference is made to
preliminary studies which indicate that the property of cytopathogenesis is not
associated with virulent, unmodified, bluetongue virus.
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