Donating spare embryos for embryonic stem-cell research.
D035843:Biomedical Research / Q000941:ethics*; D004622:Embryo, Mammalian / Q000166:cytology*; D005260:Female; D006801:Humans; D013234:Stem Cells / Q000502:physiology*; D009927:Tissue and Organ Procurement / Q000941:ethics*