[Observing BVD infection].
D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D001912:Bovine Virus Diarrhea-Mucosal Disease / Q000175:diagnosis*; D002417:Cattle; D001908:Diarrhea Viruses, Bovine Viral / Q000276:immunology* / Q000302:isolation & purification; D008403:Mass Screening / Q000662:veterinary; D008892:Milk / Q000276:immunology*; D013997:Time Factors
D000914:Antibodies, Viral