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The embryos {that are|are being used} in embryonic stem cell research are derived from eggs, {that|which|who} {were|live|exist|are still}}}} fertilized in in vitro fertilization clinics, but which {never|no matter what efforts|no matter what what efforts, never|despite even great efforts, never|despite all the efforts|despite all the efforts, have #file_links["C:\Users\Admin\Desktop\file\gsa+en+Georgiy5k10k20k40k2805251P2URLBB.txt",1,N] ever been implanted into a woman's uterus. |
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