Embryos may be used.Logical formLearned from38 sentences. Embryos can be destroyed.Logical formLearned from37 sentences. Embryos can be at (fertility clinics).Logical formLearned from37 sentences. (Cell lines) may be derived from embryos.Logical formLearned from37 sentences. Research may involve embryos.Logical formLearned from37 sentences. Cells may be took from embryos.Logical formLearned from37 sentences. Embryos may be discarded.Logical formLearned from36 sentences. Embryos can be persons.Logical formLearned from36 sentences. An embryo can be implanted.Logical formLearned from36 sentences. Cells may be took from human embryos.Logical formLearned from36 sentences. Some embryos may be implanted.Logical formLearned from35 sentences. An embryo may be implanted.Logical formLearned from34 sentences. (Stem cells) may come from embryos.Logical formLearned from34 sentences. (Stem cells) may be extracted from embryos.Logical formLearned from34 sentences. Therapeutic cloning may use a human embryo.Logical formLearned from34 sentences.