In the embryo transfer, the best quality embryos created in the laboratory by IVF/ICSI are introduced into the patient's uterus. It is a simple process that does not require anesthesia and after which the patient returns home with a normal life, but avoi
Implantation is a complex process where a blastocyst stage embryo attaches to the receptive endometrium of the mother and pregnancy begins. For this to occur, there must be total synchrony between the embryo and the endometrium.
Is a blastocyst an embryo? When do synapsis and crossing over occur in mitosis? When is human ovulation? When is the brain formed in prenatal development? What is the difference between identical and fraternal twins? When does the embryonic period end? How are "gamete," "chromosomes," and ...
The appearance of a fluid-filled inner cavity marks the transition from morula to blastocyst and is accompanied by cellular differentiation: the surface cells become the trophoblast (and give rise toextraembryonic structures, including the placenta) and the inner cell mass gives rise to the embryo. ...
In what week of the fetus does the notochord become the spine? Is the cerebellum part of the cerebral cortex? Are the majority of neurons formed in the fetal stage? When does the blastocyst implant in the uterus? When does anterior fontanelle close? Where is the cerebellum located? How is...
In an IVF cycle, the timing element that is crucial to a successful pregnancy is when the embryo transfer happens, which is typically on day two or day three (aka a cleavage-stage transfer) or on day five or day six (aka a blastocyst-stage transfer). ...
At which stage does cell differentiation start? During the third week after fertilization, the embryo begins to undergo cellular differentiation. Differentiation is the process by which unspecialized cells become specialized. As illustrated in Figure below, differentiation occurs as certain genes are expres...
Blastocyst embryoLive birthMultiple birthIn vitro fertilizationOocyte donor in vitro fertilization (IVF) represents an ideal model to study the effects of embryo stage on reproductive success, as embryos come from young women with high-quality oocytes. Our study aimed to determine if embryo transfer ...
Fun fact: women at the time of the embryo transfer, in theory, instantly become 2 weeks pregnant! Pregnancy Test results - how does it work? The most common type of pregnancy test is a home urine pregnancy test. The idea is simple — the test detects the level of hCG. hCG is a horm...
They choose the strongest 2 embryos to put back in, and will freeze what is left as long it is a blastocyst. This means that if you have 6 embryos that are growing and 2 become blastocysts, they will put those two in. And guess what happens to the other 4? They aren’t good enoug...