A multivariate logistic regression analysis identified age, non-GQB status, blastocyst stage after day six, and post-warming shrinkage as independent predictors of clinical pregnancy. The ...

Single-embryo transfer has been recommended to reduce the incidence of multiple gestations when in vitro fertilization is performed in women under 36 years of age. We designed a prospective ...

The diagram shows a preimplantation-stage blastocyst (approximately six to seven days after conception) and the processes thought to be necessary for uterine receptivity and blastocyst apposition ...

But about 6 in 10 never reach the blastocyst stage. Instead, they stop developing about three days after fertilisation, when they consist of only a few cells. Why some stop developing was a ...

However, concerns have been raised that this extended culture to the blastocyst stage may increase obstetric complications and increase perinatal risks. Some large studies have already shown ...

In this way they have been able to determine that these cells originate from one or two cells at the blastocyst stage and their progeny ultimately cluster together in a specific part of the embryo ...

In addition, said Dr. Saket, even when a fresh embryo transfer was performed on day two or three (at the traditional cleavage stage), the culture of all extra embryos to the blastocyst stage would ...

Mammalian embryos form a new structure termed the blastocyst at this stage, which can be characterized by a mass within the cells that is obviously distinct from the outer blastula region.