Table 1.
Number of embryos receiving neutral red injection into blastocoel roof at each time
| Injection time | Bombina orien talis | Rana japonica | Rana porosa brecipoda | Rana rugosa | Xenopus laevis | Xenopus tropicalis | Ambystoma mexicanum | Cynops ensicauda | Cynops pyrrhogaster | Hynobius nebulosus |
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 15 | 3 | 5 | 14 | 54 | 21 | 7 | 7 | 16 | |
| 0.33 | 20 | |||||||||
| 0.66 | 26 | |||||||||
| 1 | 25 | 4 | 5 | 22 | 27 | 16 | 2 | 7 | ||
| 2 | 29 | 10 | 8 | 24 | 24 | 7 | 14 | 15 | ||
| 3 | 35 | 8 | 10 | 16 | 52 | 13 | ||||
| 4 | 23 | 5 | 8 | 20 | 33 | 12 | 20 | 10 | ||
| 5 | 13 | 8 | 20 | 40 | 19 | 10 | ||||
| 6 | 14 | 5 | 8 | 20 | 13 | 2 | 27 | 12 | ||
| 7 | 19 | 6 | 11 | |||||||
| 8 | 13 | 4 | 12 | 12 | ||||||
| 9 | 12 | |||||||||
| 10 | 14 | 3 | 4 | |||||||
| 12 | 7 | 2 | ||||||||
| 13 | 2 | |||||||||
| 14 | 3 | 2 | ||||||||
| 15 | 2 | |||||||||
| (hour after BA) | ||||||||||
| Time of circular blastopore pigment line (hour after BA) | 5 | 6 | 6 | 6 | 5 | 1.5 | 15 | 24 | 15 | 14 |