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The protective effects of rMDV and Rispens.
| Group | Virus | Inoculation Age (Days) | Chicken Number | Inoculation Dose (PFU/0.2 mL) | Challenge Virus | Challenge Age (Days) | Challenge Dose (PFU) |
|---|---|---|---|---|---|---|---|
| G1 | rMDV | 1 | 10 | 125 | Md5 | 7 | 500 |
| G2 | rMDV | 1 | 10 | 250 | Md5 | 7 | 500 |
| G3 | rMDV | 1 | 10 | 500 | Md5 | 7 | 500 |
| G4 | Rispens | 1 | 10 | 125 | Md5 | 7 | 500 |
| G5 | Rispens | 1 | 10 | 250 | Md5 | 7 | 500 |
| G6 | Rispens | 1 | 10 | 500 | Md5 | 7 | 500 |
| GC | / | / | 20 | / | Md5 | 7 | 500 |
