Hundreds can be constituted-of-or-filled-with embryos.Logical formLearned from22 sentences. Experiments can be on embryos.Logical formLearned from22 sentences. A type may be found in human embryos.Logical formLearned from22 sentences. (Stem cells) may be derived from embryos.Logical formLearned from22 sentences. (Stem cells) may be obtained from human embryos.Logical formLearned from22 sentences. An embryo can be dead.Logical formLearned from22 sentences. A cell can be from an embryo.Logical formLearned from22 sentences. Embryos may undergo an analysis.Logical formLearned from22 sentences. (Master cells) may be found in embryos.Logical formLearned from22 sentences. Embryos can be human beings.Logical formLearned from22 sentences. A region may pertain-to an embryo.Logical formLearned from21 sentences. Scientists may create embryos.Logical formLearned from21 sentences. An embryo may be created for (research purposes).Logical formLearned from21 sentences. Embryos can be in storage.Logical formLearned from21 sentences. Embryos may undergo a donation.Logical formLearned from21 sentences.