A stem can be straight.Logical formLearned from7 sentences. One-third may pertain-to stems.Logical formLearned from7 sentences. Trees can be with stems.Logical formLearned from7 sentences. (Stem cells) may be obtained from sources.Logical formLearned from7 sentences. A (stem cell treatment) can be adult.Logical formLearned from7 sentences. A mass can be constituted-of-or-filled-with stems.Logical formLearned from7 sentences. A (stem cell) can be induced.Logical formLearned from7 sentences. Stems can be diseased.Logical formLearned from7 sentences. (Stem cells) may be found in embryos.Logical formLearned from7 sentences. (Stem cells) can be preserved.Logical formLearned from7 sentences. An investment can be in (stem cell research).Logical formLearned from7 sentences. Sources can be constituted-of-or-filled-with adult (stem cells).Logical formLearned from7 sentences. A circle can be around a stem.Logical formLearned from7 sentences. Cherries can be with stems.Logical formLearned from7 sentences. A (stem cell task force) may pertain-to a government-agency.Logical formLearned from7 sentences.