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Growth of P10 variantsa
| Virus | Plaque titer (106 PFU/ml) |
|---|---|
| Parental chimera | 0.01 |
| P10 virus from passage series: | |
| 6 | 2.8 |
| 7 | 0.5 |
| 8 | 1.8 |
| 9 | 1.5 |
| 10 | 0.5 |
| 11 | 1.5 |
BHK cells were infected with P10 virus from passage series 6 to 11, and titers of released virus at 48 h after infection were determined. The unpassaged parental chimera was included as a control.
