this is a new technique for rapid cooling of embryos. sometimes couples want to store embryos for future use and this technique does not cause ice crystal build up. Ideal for egg or embryo storage.

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Is that it? Are there any more techinques?

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If I understood it right, couples have their embryo frozen so that they can use it later on? How is that related to infertility?

Maybe the embryo is for those who can't have children to use. Will the embryo last long? How long usually?

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