Studies can be constituted-of-or-filled-with embryonic (stem cells).Logical formLearned from14 sentences. A new line can be constituted-of-or-filled-with (stem cells).Logical formLearned from14 sentences. A restriction may place limits on (stem cell research).Logical formLearned from14 sentences. Debate can be over (stem cell research).Logical formLearned from14 sentences. (Stem cell research) can be in an infancy.Logical formLearned from14 sentences. Some stems may be staggered over a period.Logical formLearned from14 sentences. A bulb may send_up some stems.Logical formLearned from14 sentences. A stem can be wooden.Logical formLearned from14 sentences. (Stem cells) may undergo an understanding.Logical formLearned from14 sentences. (Stem cells) can be implanted.Logical formLearned from14 sentences. Issues can be as (stem cell research).Logical formLearned from14 sentences. (Stem cells) may be removed from blood of a patient.Logical formLearned from14 sentences. A stem can be curved.Logical formLearned from14 sentences. A stem can be round.Logical formLearned from14 sentences. A (main stem) may pertain-to a river.Logical formLearned from14 sentences.