Bases may clasp a stem.Logical formLearned from12 sentences. Stems can be triangular.Logical formLearned from12 sentences. A stem may break.Logical formLearned from12 sentences. (Stem cells) may be derived.Logical formLearned from12 sentences. A (stem cell) can be autologous.Logical formLearned from12 sentences. A stem can be leafless.Logical formLearned from12 sentences. Abortion can be for (stem cell research).Logical formLearned from12 sentences. Dollars can be for (stem cell research).Logical formLearned from12 sentences. (Stem cells) may use (animal eggs).Logical formLearned from12 sentences. (Stem cell lines) may undergo a creation.Logical formLearned from12 sentences. (Stem cells) may be produced.Logical formLearned from12 sentences. A (stem cell transplant) can be successful.Logical formLearned from12 sentences. Scientists may derive (stem cells) from embryos.Logical formLearned from12 sentences. Work can be on new lines of (stem cells).Logical formLearned from12 sentences. (Stem cells) can be from skin.Logical formLearned from12 sentences.