An embryo may be implanted into a womb.Logical formLearned from34 sentences. (Stem cells) may be extracted from human embryos.Logical formLearned from34 sentences. Cells may be extracted from embryos.Logical formLearned from34 sentences. Embryos can be implanted.Logical formLearned from33 sentences. Cells can be in an embryo.Logical formLearned from33 sentences. Embryos can be fossilized.Logical formLearned from33 sentences. An embryo may undergo a transfer.Logical formLearned from33 sentences. A life may pertain-to an embryo.Logical formLearned from33 sentences. Embryos may undergo a use.Logical formLearned from33 sentences. An (embryo transfer) can be frozen.Logical formLearned from32 sentences. Embryos may be frozen.Logical formLearned from32 sentences. Cells may be derived from human embryos.Logical formLearned from32 sentences. Thousands can be constituted-of-or-filled-with human embryos.Logical formLearned from32 sentences. A surface may pertain-to an embryo.Logical formLearned from31 sentences. An embryo may be created.Logical formLearned from31 sentences.