A (stem cell issue) can be embryonic.Logical formLearned from22 sentences. A stem can be swollen.Logical formLearned from22 sentences. (Type valve stem seals) can be positive.Logical formLearned from22 sentences. (Type valve stem seals) can be on intake.Logical formLearned from22 sentences. (Stem cell research) may undergo importance.Logical formLearned from22 sentences. A (stem cell researcher) can be at an university.Logical formLearned from22 sentences. (Stem cells) may be derived from embryos.Logical formLearned from22 sentences. (Stem cell lines) may undergo a development.Logical formLearned from22 sentences. Opposition can be to (stem cell research).Logical formLearned from22 sentences. A stem can be tough.Logical formLearned from22 sentences. (Stem cells) may be obtained from human embryos.Logical formLearned from22 sentences. Tops may pertain-to stems.Logical formLearned from22 sentences. (Stem cell therapies) can be embryonic.Logical formLearned from22 sentences. Critics can be constituted-of-or-filled-with (stem cell research).Logical formLearned from22 sentences. (Stem cells) can be immature.Logical formLearned from22 sentences.