Review Article
Recent Progress in Cryopreservation of Bovine Oocytes
Table 1
A list on Day-2 cleavage and Day-8 blastocyst yield from bovine mature oocytes cryopreserved and fertilized in vitro.
| Years | Method/device for cryopreservation | Oocyte cryosurvival | Literature | Cleavage rate | Blastocyst yield |
| 1992 | Freezing/French straw | 42% | 3% | Otoi et al. [45] | 1992 | Vitrification/French straw | 22% | 9% | Hamano et al. [46] | 1996 | Vitrification/EM-grid*1 | 40% | 15% | Martino et al. [47] | 1998 | Vitrification/OPS*2 | 50% | 13% | Vajta et al. [48] | 2000 | Vitrification/Microdrop | 62% | 11% | Dinnyes et al. [49] | 2004 | Vitrification/Cryotop | 70% | 7% | Chian et al. [50] | 2005 | Vitrification/GL-tip*3 | 49% | 17% | Tominaga et al. [51] | 2010 | Vitrification/Cryotop | 76% | 12% | Zhou et al. [52] |
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EM-grid: electron microscope grid; OPS: open-pulled straw; GL-tip: gel-loading tip.
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