Stems can be intact.Logical formLearned from5 sentences. (Stem cell lines) may be used.Logical formLearned from5 sentences. Embryonic (stem cells) can be autologous.Logical formLearned from5 sentences. (Embryo stem cells) may undergo a use.Logical formLearned from5 sentences. (Stem cell research) can be an example.Logical formLearned from5 sentences. (Stem cell research) can be a wedge.Logical formLearned from5 sentences. Stems can be fat.Logical formLearned from5 sentences. Stems can be intact.Logical formLearned from5 sentences. Stems can be tough.Logical formLearned from5 sentences. Leaves can be on stems.Logical formLearned from5 sentences. Stems can be rough.Logical formLearned from5 sentences. Stems can be angular.Logical formLearned from5 sentences. Tissues may pertain-to a stem.Logical formLearned from5 sentences. Variety can be constituted-of-or-filled-with stems.Logical formLearned from5 sentences. A cortex may pertain-to a stem.Logical formLearned from5 sentences.