(Stem cell research) can be an issue.Logical formLearned from17 sentences. (Stem cells) may pertain-to a donor.Logical formLearned from17 sentences. A (stem cell program) may pertain-to a us-state.Logical formLearned from17 sentences. A (stem cell expert) can be at an university.Logical formLearned from17 sentences. Research can be on (stem cells).Logical formLearned from17 sentences. (Bone marrow) may contain (stem cells).Logical formLearned from17 sentences. A part may pertain-to stems.Logical formLearned from17 sentences. Restrictions can be on federal funding of (stem cell research).Logical formLearned from17 sentences. Stems can be woody.Logical formLearned from17 sentences. (Stem cells) may be harvested from embryos.Logical formLearned from17 sentences. A stem can be cut.Logical formLearned from17 sentences. Research may involve adult (stem cells).Logical formLearned from17 sentences. Stems can be spindly.Logical formLearned from17 sentences. A (stem cell research) can be controversial.Logical formLearned from17 sentences. (Stem cells) may be took from a (bone marrow).Logical formLearned from17 sentences.