Earlier studies have shown that this test can select oocytes with superior quality in some species such as the pig, goat, bovine, mouse, and dog in terms of nuclear maturation, cleavage rate and blastocyst
yield (Ericsson et al.
Data for the Early Embryo Viability Assessment (Eeva(TM)) Test demonstrate that transfer of embryos at Day 3 resulted in comparable clinical outcomes to blastocyst
stage (Day 5 of development after fertilisation) transfer when the Eeva(TM) Test is used in combination with review of embryo shape and structure (morphology) to improve embryo assessment.
Using the BO-IVF media system, laboratories can benefit from this extensive combined portfolio of knowledge of EmbryoTrans Biotech by achieving higher blastocyst
rates, more robust blastocysts
and thereby a higher pregnancy rate.
Using this new technology, the embryologists can now provide a more stable environment to allow greater numbers of embryos to develop to [euro]ve days old when the embryo reaches what is called the blastocyst
As for the blastocyst
, the term describes an embryo's stage of development, not a different thing than an embryo.
Two major advances in stem cell research occurring in 2013 and 2014 pave the way for eventual mitochondrial replacement therapy: (1) successful cloning of a human to the blastocyst
stage of development, and (2) transformation of specialized mouse, somatic cells into totipotent cells.
is an embryo that has advanced to day five or six.
Called comprehensive chromosome screening with vitrification, it involves taking a few cells from a blastocyst
- an embryo just five or six days old.
The number of embryos or blastocysts
transferred in each cycle was captured, but embryo and blastocyst
transfers were not reported separately.
The cleavage, blastocyst
, and hatching rates were detected on days 3, 6, and 7, respectively (Day 0 defined as the day of fertilization).
However at the ARU, blastocyst
culture enables embryos to be "grown" in a lab to the blastocyst
stage of development (day five after fertilisation).
Confounding variables studied included female age, duration of infertility, cause of infertility, smoking status, ovarian reserve, history of previous miscarriage, method of oocyte fertilisation and grade of blastocyst