A person may tie a stem with a tongue.Logical formLearned from7 sentences. A girl may boob (adult stem cells).Logical formLearned from7 sentences. (Stem cell research) can be unnecessary.Logical formLearned from7 sentences. (Stem cells) can be successful.Logical formLearned from7 sentences. Adult (stem cells) may be found on walls of (blood vessels).Logical formLearned from7 sentences. A leaf may attach to a stem.Logical formLearned from7 sentences. A patent can be on embryonic (stem cells).Logical formLearned from7 sentences. A (stem cell) can be true.Logical formLearned from7 sentences. (Stem cell research opponents) can be embryonic.Logical formLearned from7 sentences. Some (cancer cells) may mimic (stem cells).Logical formLearned from7 sentences. Stems can be rotten.Logical formLearned from7 sentences. A stem can be pink.Logical formLearned from7 sentences. (Stem cells) can be at a stage of development.Logical formLearned from7 sentences. Changes to embryonic (stem cells) may be caused by presence of a copy of chromosome.Logical formLearned from7 sentences. (Stem cells) may give rise to neurons.Logical formLearned from7 sentences.