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Infection with bovine viral diarrhoea virus (BVDV) represents a reproducible natural animal model in which to study mechanisms of transplacental viral infection. In the present study, BVDV-seronegative heifers were challenged intranasally with non-cytopathic BVDV of genotype 1b or 2. Fetuses were retrieved by caesarean section 7-114 days post-challenge of(More)
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