| the transfer of a developing embryo to or from the uterus of a surrogate mother. |

| embryo transfer n. In both senses also called embryo transplant.
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embryo transfer n.
After artificial insemination, the process by which the fertilized ovum is transferred at the blastocyst stage to the recipient's uterus.
| embryo transfer
The transfer into a recipient's uterus of an egg that has been fertilized in vitro and is at the blastula stage of development. |