(Stem cells) may be took from embryos.Logical formLearned from85 sentences. Embryos may undergo a production.Logical formLearned from85 sentences. Embryos can be healthy.Logical formLearned from84 sentences. Research may use embryos.Logical formLearned from72 sentences. Embryos may undergo destruction.Logical formLearned from69 sentences. Embryos may undergo a freezing.Logical formLearned from68 sentences. Research may use human embryos.Logical formLearned from68 sentences. A human embryo may be destroyed.Logical formLearned from67 sentences. An embryo can be viable.Logical formLearned from66 sentences. Human embryos may undergo a killing.Logical formLearned from66 sentences. Embryos can be female.Logical formLearned from65 sentences. Embryos may pertain-to a person.Logical formLearned from64 sentences. (Stem cells) may be took from human embryos.Logical formLearned from64 sentences. An embryo can be vertebrate.Logical formLearned from61 sentences. Embryos may be leave_overed from (fertility treatments).Logical formLearned from61 sentences.