A controversy can be over embryonic (stem cells).Logical formLearned from7 sentences. A layer can be constituted-of-or-filled-with (stem cells).Logical formLearned from7 sentences. A reservoir can be constituted-of-or-filled-with (stem cells).Logical formLearned from7 sentences. Pools can be constituted-of-or-filled-with (stem cells).Logical formLearned from7 sentences. Changes can be in (stem cells).Logical formLearned from7 sentences. Stems can be constituted-of-or-filled-with leaves.Logical formLearned from7 sentences. A stem can be noble.Logical formLearned from7 sentences. (Stem cells) may undergo importance.Logical formLearned from7 sentences. Issues may be associated with (stem cell research).Logical formLearned from7 sentences. Adult (stem cells) can be difficult.Logical formLearned from7 sentences. A section can be constituted-of-or-filled-with stem.Logical formLearned from7 sentences. Some percent can be constituted-of-or-filled-with (stem cell facilities).Logical formLearned from7 sentences. Some flowers can be on a stem.Logical formLearned from7 sentences. Neural (stem cells) may undergo a discovery.Logical formLearned from7 sentences. (Stem cells) may have an ability.Logical formLearned from7 sentences.