TABLE 2.
Biological assessments of the recombinant virusesa
| Virus | MDT (h) | ICPI | HA | EID50 | TCID50 |
|---|---|---|---|---|---|
| rLaSota | 110 | 0.15 | 1,024 | 6.8 × 108 | 3.5 × 107 |
| rLS-GFP | 120 | 0.00 | 2,048 | 3.1 × 108 | 9.8 × 107 |
| rLS/ILTV-gB | 120 | 0.00 | 2,048 | 3.8 × 108 | 1.6 × 107 |
| rLS/ILTV-gD | 112 | 0.01 | 2,048 | 6.8 × 108 | 3.8 × 107 |
a
Abbreviations: MDT, mean death time in embryonated eggs; ICPI, intracerebral pathogenicity index in 1-day-old chickens; HA, hemagglutination titer; EID50, 50% egg infectious dose in embryonated eggs; TCID50, 50% tissue infectious dose on DF-1 cells.