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How long can the eggs stay frozen?

The eggs can stay frozen for the necessary period of time without any effect on their quality.

In order to use these eggs, they must be thawed in the laboratory for fertilisation with sperm from the partner or a donor. The collected embryos are maintained in culture to be transferred 5 days later. The embryos that have not been transferred will be frozen.

The woman will have to prepare her endometrium with oestrogen and progesterone hormone replacement therapy in order to receive the embryos.