Fresh Versus Frozen
Embryos can be either “fresh” from fertilized egg cells of the same menstrual cycle, or “frozen”, that is they have been generated in a preceding cycle and undergone embryo cryopreservation, and are thawed just prior to the transfer. The outcome from using cryopreserved embryos has uniformly been positive with no increase in birth defects or development abnormalities, also between fresh versus frozen eggs used for intracytoplasmic sperm injection (ICSI). Children born from vitrified blastocysts have significantly higher birthweight than those born from non-frozen blastocysts.
Read more about this topic: Embryo Transfer
Famous quotes containing the words fresh and/or frozen:
“In the atom’s fizz and pop we heard possibility
uncorked. Taffeta wraps whispered on davenports.
A new planet bloomed above us; in its light
the stumps of cut pine gleamed like dinner plates.
The world was beginning all over again, fresh and hot;
we could have anything we wanted.”
—Lynn Emanuel (b. 1949)
“It was a good thing to have a couple of thousand people all rigid and frozen together, in the palm of one’s hand.”
—Charles Dickens (1812–1870)