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The blastocyst is a structure shaped in the early development of mammals. It possesses an inner cell mass (ICM) that later forms the embryo. The outer layer of the blastocyst consists of cells conjointly called the trophoblast.
The blastocyst consists of cells forming an outer membrane layer, an inner cell mass and a fluid-filled cavity. The blastocyst inner cell mass is the source of true embryonic stem cells capable of forming all cell types within the embryo.
An embryo that has developed to the point of getting a pair of completely different cell components and a fluid cavity. Human embryos from in vitro fertilization in culture in an IVF science laboratory, or developing naturally in the body, usually reach blastocyst stage by day five after fertilization
Day five IVF blastocyst transfer has high success rates and permits for control of multiple pregnancies. pros and cons of five day transfers are discussed.
If your IVF did not work despite the actual fact that you had embryos for replacement on day a pair of or three, blastocyst culture should facilitate us confirm whether or not really your embryos develop beyond day three in the least (even very good quality day three embryos might not form blastocysts) and if so, which of those embryos would be the best ones.
Yes, a single blastocyst can split into twins, because blastocysts have a significantly higher implantation potential than day 3 embryos, the physician can transfer only two embryos and keep pregnancy rates high (over 50% per egg retrieval procedure in some programs for women under age 40) and triplet pregnancy rates down in the 2% to 4% range.
