title: Important differences between sources of embryonic stem cells.
authors: A
authors: A
authors: McLaren
mesh_terms: D001675:Bioethics; D033041:Embryo Research; D004622:Embryo, Mammalian / Q000166:cytology*; D004625:Embryo, Nonmammalian; D005062:European Union; D012106:Research / Q000592:standards*; D035845:Research Embryo Creation; D013234:Stem Cells