Related by context. Frequent words. (Click for all words.) 69 therapeutic cloning 65 human cloning 65 human embryos 64 embryonic stem cell 64 reproductive cloning 63 stem cell research 62 cloning 62 embryonic stem cells 61 somatic cell nuclear 61 Embryonic stem cell 60 cloned embryos 60 embryonic cells 59 stem cell 57 human embryonic stem 57 embryo 57 destroying embryos 56 embryos 54 stem cells 54 Stem cell 51 adult stem cells 51 stem cells derived 51 Hwang Woo suk 50 Cloning 49 fertilized egg 49 stem cell therapies 48 scientist Hwang Woo 48 adult stem cell 48 vitro fertilization 47 embryology 47 Stem Cell Research 47 iPS cells 47 genetic manipulation 46 commercial whaling 46 fertilized eggs 46 genetically modified 45 embryonic 45 parthenogenesis 45 Embryo 45 bioethics 45 abortion 44 genetically engineered 44 pluripotent stem cells 44 ES cells 44 biomedical research 44 assisted reproduction 44 organ transplantation 43 eugenics 43 Embryonic stem cells 43 blastocyst 43 stem cell therapy 43 blastocysts 43 euthanasia 43 bioethicists 43 induced pluripotent stem cells 43 cloned 43 genetically altered 43 Stem Cell 42 gay marriage 42 unborn babies 42 beef imports 42 IVF 42 Embryos 42 genetic modification 42 artificial insemination 42 regenerative medicine 42 vitro fertilization IVF 42 hESCs 42 frozen embryos 42 fertility treatments 42 artificial contraception 42 HFEA 42 abortions 42 personhood 42 gene therapy 42 vivisection 42 homosexuality 42 Embryology Authority 41 organ transplants 41 Adult stem cells 41 recombinant DNA 41 fertilization 41 Assisted suicide 41 sex marriages 41 infertile couples 41 oocytes 41 selective breeding 41 contraception 41 reproductive 41 abortion euthanasia 40 procreation 40 gay marriages 40 Abortion 40 ovarian tissue 40 transgenic 40 ova 40 pluripotent 40 whaling 40 pluripotency 40 Darwinian evolution 40 biotechnologies 40 fertility clinics