[Isolation and characterization of bovine diarrhea viral isolates].

The paper presents the results of a study of the antigenic and electromicroscopic characteristics of 3 bovine viral diarrhea isolates from cattle in Siberia. All the isolates were antigenically related to the reference strain BK-1 and closely interrelated: their affinity was in the range of 92.2 to 96.4%. The aerosolic administration of the isolate of TM from the sick calf lung into 2 seronegative (4-6-month-old) calves caused the characteristic sings of acute respiratory disease with short diarrhea.