Blastocysts are normally protected from external influences by a coat, the zona pellucida; before the embryo implants in the ...

Blastocyst shrinkage occurred in 15.4% of embryos, with the shrinkage group showing lower rates of implantation, clinical pregnancy, ongoing pregnancy, and live births than the re-expansion group.

Implantable 3D blastocyst-like embryonic structure generated from mouse stem cells. RIKEN. Journal Stem Cell Reports DOI 10.1016/j.stemcr.2019.07.011 ...

Moreover, the rate of live births after transfer of a single fresh blastocyst-stage embryo was similar to that after transfer of two fresh cleavage-stage (day 2) embryos in the Scandinavian study ...

Traditionally, the quality of blastocysts is assessed using 2D methods that lack depth and comprehensive indicators. Although some 3D methods exist, they aren't practical or safe for clinical use.

The transfer of embryos cultured for five or six days after fertilization in IVF and ICSI has become routine in many fertility clinics.

They compared their model with fluorescence imaging of the blastocysts and found it was 90% accurate. “Traditionally, the quality of blastocysts is assessed using 2D methods that lack depth and ...

After fresh embryo transfer, the blastocyst group showed a higher live birth rate (risk ratio [RR], 1.26; 95 percent confidence interval [CI], 1.00 to 1.58), lower cumulative pregnancy loss rate ...

January 9, 2012 — Women who become pregnant with in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) with the transfer of fresh blastocysts have lower rates of miscarriage ...

In a paper published in MedComm, embryologists and physicians in the field of reproductive medicine present evidence of impaired clinical outcomes after re-cryopreservation in human blastocysts.

Blastocysts that have difficulty in dealing with the intruding sperm could be more susceptible to failed implantation," says Huppertz. New perspectives on reproductive competition and health.