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HI antibody titers of the pregnant sows after virus injection.
| Group | Virus strain | Gilt No. | HI titer of maternal serum on day (log2) | ||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| Day 0 | Day 7 | Day 14 | Day 21 | Day 49 | |||
| 1 | TX7 | 1 | 0 | 5 | 8 | 11 | 10 |
| 2 | 0 | 6 | 9 | 12 | 10 | ||
| 3 | 0 | 5 | 8 | 11 | 10 | ||
| 2 | VC5 | 4 | 0 | 5 | 8 | 11 | 10 |
| 5 | 0 | 5 | 8 | 11 | 10 | ||
| 6 | 0 | 4 | 7 | 10 | 9 | ||
| 3 | No virus | 7 | 0 | 0 | 0 | 0 | 0 |
| 8 | 0 | 0 | 0 | 0 | 0 | ||
| 9 | 0 | 0 | 0 | 0 | 0 | ||
HI=Hemagglutination inhibition
