Table 2.
Characteristics of early to hatched blastocyst stages in mammals 1.
| Species: | Mouse | Rabbit | Human | Cynomolgus | Cattle |
|---|---|---|---|---|---|
| Early (cavity visible, <30% vol) | From 32 cells | From 64 cells | From 35 cells | From 50 cells | From 64 cells |
| E3.25 | E3 (“VI”) | E4–early E5 | E5–6 | E6 | |
| Mid (ca 30–70%) | <64 cells | >128 cells | 64–100 cells | 100–130 cells | |
| E3.5 | E3.25 (“VII”) | late E5 | E7 | ||
| Late (max cavity zona enclosed) | >64 cells | >256 cells | 128–256 cells | 200–300 cells | 140–200 cells |
| E3.75 | E3.5 (“VIII”) | early E6 | E7-8 | E7 | |
| Hatched (Hypo forming layer) | >100 cells | >512 cells | >256 cells | 300–600 cells | >250 cells |
| E4.25 | E3.75 (“IX”) | late E6 | E8-9 | E8 |