Stems can be underwater.Logical formLearned from5 sentences. (Stem cells) can be in skin.Logical formLearned from5 sentences. Some stems can be constituted-of-or-filled-with mechanical engineering.Logical formLearned from5 sentences. Advances can be in (stem cell biology).Logical formLearned from5 sentences. A (stem rust fungus) can be black.Logical formLearned from5 sentences. Stems can be unbranched.Logical formLearned from5 sentences. (Stem cells) can be maternal.Logical formLearned from5 sentences. An ability may pertain-to a (stem cell).Logical formLearned from5 sentences. (Stem cells) can be in umbilical-cord blood.Logical formLearned from5 sentences. (Stem cells) can be reinfused.Logical formLearned from5 sentences. Hematopoietic (stem cells) may undergo survival.Logical formLearned from5 sentences. Leaves may clasp a stem.Logical formLearned from5 sentences. Portions can be constituted-of-or-filled-with stems.Logical formLearned from5 sentences. A report can be on (stem cell research).Logical formLearned from5 sentences. An epidermis may pertain-to a stem.Logical formLearned from5 sentences.