What Happens During Embryo Transfer?
An embryo transfer is the last part of the in vitro fertilization (IVF) process. At Fertility Centers of New England, all embryos are grown for 5 days to the Blastocyst stage prior to transfer into the uterus. Many patients ask what happens during embryo transfer? What Happens During Embryo Transfer? Early in the morning, on […]
The Potential Benefits of Assisted Hatching
A previous blog on this site described the use of assisted hatching on frozen embryos. As described, laser assisted hatching is a technique used to mechanically thin or vaporize a portion of the outer zona pellucida. This breach or thinning of the zona is done to aid the egress of the blastocyst from the outer […]
Laser Assisted Hatching of Vitrified Embryos
A human egg or oocyte is surrounded by an outer protective shell known as the zona pellucida. As an embryo develops from zygote (day 1) to blastocyst (day 5), the outer zona progressively thins (see photos of day 3 embryo with thicker zona and day 5 blastocyst with thin zona). This ultimately enables the embryo […]