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If the cycle has produced more than
two (or three) good quality embryos, those that aren't transferred, may
be frozen for future use. These embryos will be frozen at extremely low
temperature (-180°C), which ensures that they do not deteriorate
over the number of years they are stored.
In a Frozen Embryo Transfer Cycle, the woman takes medications to
prepare her womb to receive these embryos. The advantage of frozen
embryo implantation treatment is that there is no need to use hormone
injections to stimulate the ovaries.
An ultrasound scan is performed to assess the lining of the uterus to
determine whether it is ready to receive the embryo. Once the lining is
ready, embryos are thawed and transferred.
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