(Stem cells) can be regenerative.Logical formLearned from5 sentences. Doctors may treat persons with adult (stem cells).Logical formLearned from5 sentences. (Stem cell studies) may be challenged.Logical formLearned from5 sentences. Blood can be full of adult (stem cells).Logical formLearned from5 sentences. Ones can be with stems.Logical formLearned from5 sentences. (Imitation adult stem cells) may be developed.Logical formLearned from5 sentences. A center can be for (stem cell biology).Logical formLearned from5 sentences. The right may pertain-to a stem.Logical formLearned from5 sentences. A body may maintain (stem cells).Logical formLearned from5 sentences. (Blood stem cells) may undergo a use.Logical formLearned from5 sentences. (Stem cells) can be in circulation.Logical formLearned from5 sentences. (Plant stem cells) may protect (skin stem cells).Logical formLearned from5 sentences. A revolutionary technology may protect (skin stem cells).Logical formLearned from5 sentences. A flower may be located at tips of stems.Logical formLearned from5 sentences. Some restrictions can be on (stem cell research).Logical formLearned from5 sentences.