Ongoing pregnancy rates from vitrified eggs as good as those from fresh

Embryos derived from oocytes (eggs) cryopreserved by the vitrification method are just as likely to produce an on-going pregnancy as those involving fresh oocytes, the 26th annual meeting of the European Society of Human Reproduction and Embryology heard today. Dr Ana Cobo, Cryobiology Unit director at Institut Universitari - IVI Valencia, Valencia, Spain, told delegates that the results of her team's research would make egg donation both easier and safer in the future...

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