From: Effects of various freezing containers for vitrification freezing on mouse oogenesis
| Method | No. of embryos | No. (%) of embryo | |
|---|---|---|---|
| Recovered | Survived | ||
| EM-grid | 128 | 114 (89.1)b | 107 (83.6)b |
| OPS | 125 | 116 (92.8)ab | 103 (82.4)b |
| Cryo-loop | 134 | 128 (95.5)a | 124 (92.5)a |