Table 1. Retroviral vector injection into chicken embryos and hatchability of virus-injected embryos.
Experiment number | Viral titer (IU/ml) | Number of embryos | |
Injected | Hatched (Hatchability) | ||
1 | 8.3×107 | 9 | 4 (44%) |
2 | 3.8×108 | 16 | 7 (44%) |
3 | 1.9×108 | 15 | 4 (27%) |
4 | 2.6×109 | 25 | 5 (20%) |
Total | – | 65 | 20 (31%) |