Related by context. Frequent words. (Click for all words.) 60 therapeutic cloning 60 cloned embryos 58 SCNT 57 reproductive cloning 56 human embryos 56 embryo 56 chimeras 55 embryos 55 somatic cell nuclear 54 embryonic cells 53 cloning 53 embryonic stem cells 52 human cloning 52 destroying embryos 51 iPSCs 51 Embryonic stem cell 51 pluripotent stem cells 51 embryonic stem cell 49 Embryology Authority 49 Embryos 48 stem cells 48 embryology 48 fetal tissue 48 stem cells derived 48 embryonic 47 fertilized egg 47 fertilized eggs 47 ES cells 47 ESCs 47 Wilmut 47 stem cell research 47 Human Fertilisation 47 blastocyst 47 adult stem cells 46 Cloning 46 bioethicists 46 Darwinian evolution 45 hESCs 45 somatic cells 45 genetically modified 45 frozen embryos 45 stem cell 45 parthenogenesis 44 human embryonic stem 44 gametes 44 zygote 44 genetically engineered 44 iPS cells 44 induced pluripotent stem cells 44 blastocysts 44 hESC 44 nonhuman primates 43 HFEA 43 pluripotency 43 procreate 43 vitro fertilization 43 genetic manipulation 42 Adult stem cells 42 transgenic 42 morally wrong 42 fox hunting 42 procreation 42 unborn 42 oocytes 42 Embryo 42 Roslin Institute 42 procreative 42 genetic modification 42 frozen embryo 41 euthanasia 41 Embryonic stem cells 41 genetically altered 41 transgenic crops 41 germ cells 41 cloned 41 artificial insemination 41 iPS 40 legalize abortion 40 genetically modified GM 40 morally repugnant 40 legalizing abortion 40 fertilization 40 fetuses 40 terminate pregnancy 40 ethicists 40 genetically modified crops 40 mouse embryos 40 genetically identical 40 pluripotent 40 Embryonic Stem Cell 40 genetically modified organisms GMOs 40 morally acceptable 39 unborn babies 39 infertile 39 GMO crops 39 vitro fertilization IVF 39 IVF 39 contraception 39 chimera 39 fertilized 39 bone marrow stem cells