Table 2.
Results of neutralization tests using the recombinant IBVs and Beaudette strains in Vero cells (%).
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
| 1. rHVR I | 100 | |||||||
| 2. rHVR II | 54.9 | 100 | ||||||
| 3. rHVR III | 56.4 | 66.6 | 100 | |||||
| 4. rHVR I/II | 64.1 | 72.1 | 65.5 | 100 | ||||
| 5. rHVR I/III | 73.8 | 45.0 | 69.6 | 44.2 | 100 | |||
| 6. rHVR II/III | 42.3 | 45.8 | 67.1 | 45.0 | 49.4 | 100 | ||
| 7. rHVR I/II/III | 40.2 | 44.1 | 52.6 | 43.1 | 46.7 | 65.9 | 100 |
Virus replication was found in Vero cells infected with Beaudette and the recombinant IBVs, so the neutralization tests between them were performed in Vero cells.