What is Embryo freezing and storage?
This is the process in which your excess embryos are bought down to minus 196 degrees Celsius, the temperature of liquid Nitrogen to be stored for future thaw and embryo transfer. The embryos are first placed in straws in ones and twos together with cryo-preservative. The straws are then placed in a special programmed freezing machine which will bring the temperature of the embryos to minus 150 degrees Celsius. The embryos are then plunged into the container of liquid Nitrogen. Theoretically, at minus 196 degrees Celsius, the embryos can survive indefinitely. In practice, they are thawed and used for transfer within five years.
