Frozen embryos 'boost for IVF'

Frozen embryos are more likely to produce successful, complication-free IVF pregnancies than those that are fresh, research suggests.

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What is embryo freezing and storage?

During in vitro fertilisation (IVF) or intra-cytoplasmic sperm injection (ICSI) treatment, fertility drugs are used to stimulate the ovaries to produce more eggs than usual.

Some people choose to freeze the good quality unused embryos Credit: Ben Birchall/PA Wire

These are then fertilised with your partner’s, or a donor’s sperm to create embryos.

Because there is normally a number of unused embryos, some people choose to freeze the good quality unused embryos for use in later treatment cycles or for donation.

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