(Stem cells) can be from embryos.Logical formLearned from145 sentences. Research may use (stem cells).Logical formLearned from145 sentences. (Stem cells) may be derived from human embryos.Logical formLearned from142 sentences. A stem can be underground.Logical formLearned from138 sentences. Funding can be for (stem cell research).Logical formLearned from138 sentences. Stems can be thin.Logical formLearned from137 sentences. (Stem cells) can be induced.Logical formLearned from137 sentences. A stem can be thin.Logical formLearned from132 sentences. A stem can be thick.Logical formLearned from132 sentences. Stems can be green.Logical formLearned from131 sentences. Stems can be short.Logical formLearned from131 sentences. Stems may pertain-to a male.Logical formLearned from130 sentences. Stems can be tough.Logical formLearned from128 sentences. Stems can be hollow.Logical formLearned from128 sentences. A stem can be hairy.Logical formLearned from127 sentences.