Cryopreservation
The freezing and storage of eggs, sperm or embryos at very low temperatures for future use.
In plain English
It's the freezing process used to store eggs, sperm or embryos so they can be used later.
Why it matters
It underpins frozen embryo transfer, egg freezing, and storing extra embryos from a stimulated cycle for future attempts.
Related terms
Guides that cover this
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