Table 1. The batches of foetal bovine serum tested by real-time RT-PCR.
| Supplier | Sample ID | Origin | BVDV-1 | BVDV-2 | BVDV-3 |
| A | A1 | Australia | + | − | − |
| A2 | Brazil | − | − | + | |
| A3 | USA | + | + | − | |
| A4 | USA | + | + | − | |
| A5 | USA | + | +(ns) | − | |
| B | B1 | Australia | + | − | + |
| B2 | Australia | + | − | + | |
| B3 | Australia | − | − | + | |
| B4 | Canada | + | +(ns) | + | |
| B5 | Mexico | + | + | + | |
| B6 | USA | +(ns)a | − | + | |
| C | C1 | USA | + | − | − |
| C2 | USA | + | − | − | |
| D | D1 | USA | + | + | − |
| E | E1 | Canada | + | + | − |
| E2 | EU | + | − | − | |
| E3 | New Zealand | + | − | − | |
| E4 | South American | + | − | + | |
| E5 | USA | + | + | − | |
| F | F1 | Brazil | + | + | + |
| G | G1 | Australia | − | − | + |
| G2 | Brazil | − | − | + | |
| H | H1 | Australia | + | − | + |
| H2 | Mexico | + | +(ns) | − | |
| H3 | USA | + | − | + | |
| J | J1 | South Africa | + | − | − |
| K | K1 | Canada | + | + | − |
| K2 | Colombia | + | − | − | |
| K3 | Denmark | + | − | − | |
| K4 | Dominican Republic | + | − | − | |
| K5 | France | + | − | − | |
| K6 | Mexico | + | − | − | |
| K7 | Unidentified | + | − | − |
a
Sequence has not been determined.