In a variation that some term “embryo adoption, ” the embryos placed in a wife’s womb involve neither her eggs nor her husband’s sperm. In yet another variation, a married couple’s eggs and sperm are fertilized outside the womb by IVF.
Veel üks IVF - i viis, mida mõned nimetavad embrüo adopteerimiseks, on selline, kus naise üsasse siirdatakse embrüod, mis ei ole saanud alguse ei tema munarakkudest ega tema abikaasa seemnerakkudest.