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:
“Band of iris-flowers
above the waves,
you are painted blue,
painted like a fresh prow
stained among the salt weeds.”
—Hilda Doolittle (1886–1961)
“I bade, because the wick and oil are spent
And frozen are the channels of the blood....”
—William Butler Yeats (1865–1939)