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In vivo experimental design.
| Groups | Number of piglets | Vaccination (inactivated virus vaccines) | Challenge virus (FL12) | |
|---|---|---|---|---|
|
| ||||
| 1st | 2nd | |||
| G1 | 3 | + (FL12) | – | + |
| G2 | 3 | + (FL12) | + (FL12) | + |
| G3 | 3 | + (FL12/GP5DM) | – | + |
| G4 | 3 | + (FL12/GP5DM) | + (FL12/GP5DM) | + |
| G5 | 3 | – | – | + |
