Article
Factors influencing oocyte and embryo quality in cattle
1 Sept 2001
Abstract excerpt
Following in vitro maturation, approximately 90% of immature bovine oocytes will reach metaphase II and extrude the first polar body; approximately 80% will undergo fertilization and cleave, at least once, to the two-cell stage. However, only about 30-40% will ever reach the blastocyst stage. This would suggest that the post-fertilization part of the process of in vitro embryo production, the longest part, is the...
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