Table 3.
The pregnancy rate for embryos cultured in either SOF or SCF1, then either transferred frozen or fresh
| Media | Cryopreservation | n | Mean | SEM |
|---|---|---|---|---|
| SOF | Fresh | 173 | 40.4ab | ±5.7 |
| SOF | Frozen | 104 | 28.6b | ±7.2 |
| SCF1 | Fresh | 252 | 49.5a | ±5.0 |
| SCF1 | Frozen | 228 | 43.6ab | ±4.9 |
Embryos were cultured in synthetic oviductal fluid (SOF) or synthetic oviductal fluid for conventional freezing 1 (SCF1). Embryos were then either transferred fresh, or slow frozen following a 20-min equilibration in ethylene glycol (EG), then transferred. The pregnancy rate was determined by ultrasound on day 60 by a skilled technician (a,bP < 0.05).