Replication of BVDV viral RNA in Mo-DC or MDBK cells. Mo-DC or MDBK cells were infected with A) ncp BVDV2a 1373, B) ncp BVDV2a 28508-5, C) cp BVDV1b-TGAC, or D) ncp BVDV1b TGAN strains of BVDV at an MOI of 6. Cells were collected at 0, 1, 6, 12, 24, 48, 72, 96, 144, 168 and 192 hour(s) post-infection. Viral RNA was extracted from the cells at each time point and quantified using qRT-PCR at each time point. The experiments were repeated three times and mean value was calculated at each time point.