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Where do the excess embryos go?

In any in vitro fertilization procedure -- whether to help with infertility, to screen embryos for inherited disease or to select an embryo as a tissue match for a sick sibling -- more viable embryos are often produced than needed to create a single baby.

In those cases, the couple chooses what to do with the excess embryos. They can discard them, donate them to research or to another couple...

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