Related by context. Frequent words. (Click for all words.) 58 adult stem cells 56 stem cells 56 therapeutic cloning 56 SCNT 55 embryonic stem cells 55 stem cell research 55 stem cells derived 54 adult stem cell 54 human reproductive cloning 54 stem cell 53 cell transplantation 53 human embryos 52 Stem cell 52 Embryonic stem cell 52 embryonic stem cell 52 stem cell therapies 52 stem cell therapy 51 reproductive cloning 51 induced pluripotent stem iPS 51 Adult stem cells 51 leftover embryos 51 somatic cell nuclear 50 embryonic cells 50 human cloning 50 cloned embryos 50 pluripotent stem cells 50 bone marrow stem cells 49 biobanks 49 fetal tissue 49 Adult Stem Cell 49 ethically acceptable 49 induced pluripotent stem cells 49 gene splicing 49 bioethicists 49 embryos 49 islet transplantation 49 scientific 48 bioethical 48 destroying embryos 48 iPS cell 48 regenerative medicine 48 ESCR 47 vitro fertilization clinics 47 embryo 47 regenerative therapies 47 ovarian tissue 47 fertilized embryos 47 assisted reproduction 47 somatic cell 47 Personalized medicine 47 Embryonic Stem Cell 47 cloning 47 antisense drugs 47 iPSCs 46 pluripotent cells 46 iPS cells 46 Molecular Cancer 46 transgenic animal 46 xenotransplantation 46 bone marrow stem cell 46 Stem Cell Research 46 biotechnological 46 curing diseases 46 gene therapy 46 unused embryos 46 biotechnologies 46 embryonic 46 cloned embryo 45 vitro fertilization 45 stem cell differentiation 45 Zebrafish 45 umbilical cord blood 45 iPS 45 fat grafting 45 assisted reproductive 45 bone marrow transplants 45 DNA microarrays 45 human embryonic stem 45 transgenic animals 45 unfertilized egg 45 nerve regeneration 45 vitro fertilization IVF 45 somatic cells 45 biobank 45 federally funded stem cell 44 ESCs 44 chimeras 44 minimally invasive treatments 44 oocytes 44 asexual reproduction 44 synthetic biology 44 hematopoietic stem cells 44 stem cell transplantation 44 male infertility 44 extracting stem cells 44 artificial insemination 44 NCCAM 44 comparative effectiveness 44 microfluidic devices 44 biomedical research 44 neural stem cell