(Stem cells) may undergo an extraction.Logical formLearned from36 sentences. Stems can be vertical.Logical formLearned from36 sentences. A (stem cell scientist) can be disgraced.Logical formLearned from36 sentences. (Stem cell lines) can be approved.Logical formLearned from36 sentences. New lines can be constituted-of-or-filled-with embryonic (stem cells).Logical formLearned from36 sentences. Stems can be brown.Logical formLearned from35 sentences. Research may use (stem cell lines).Logical formLearned from35 sentences. Stems may pertain-to a female.Logical formLearned from35 sentences. (Stem cells) may be derived from a body.Logical formLearned from35 sentences. (Stem cells) may undergo uses.Logical formLearned from35 sentences. Guidelines can be for (stem cell research).Logical formLearned from35 sentences. A (stem cell bill) can be embryonic.Logical formLearned from35 sentences. A stem can be brown.Logical formLearned from34 sentences. (Stem cell lines) may undergo a creation.Logical formLearned from34 sentences. (Stem cells) may come from embryos.Logical formLearned from34 sentences.