Related by context. Frequent words. (Click for all words.) 60 somatic cell nuclear 56 cloned embryos 56 SCNT 53 virgin birth 52 embryo 52 pluripotent stem cells 52 cloning 51 iPS cells 51 oocytes 51 embryos 50 germ cells 50 crossbreeding 50 ES cells 50 embryonic cells 50 pluripotent 50 chimeras 50 embryonic stem cells 49 blastocyst 49 therapeutic cloning 49 artificial insemination 49 induced pluripotent stem cells 49 genetically identical 48 reproductive cloning 48 stem cells 48 cultured cells 48 fertilization 48 meiosis 48 selective breeding 47 interbreeding 46 fertilized egg 46 cloned 46 destroying embryos 46 pluripotency 46 vitro fertilization IVF 46 vitro fertilization 45 human embryos 45 embryonic 45 artificially inseminated 45 genetic abnormalities 44 stem cells derived 44 mesenchymal stem cells 44 fertilized eggs 44 adult stem cells 44 human cloning 44 ovulate 44 oocyte 44 chromosomal abnormalities 44 transgenic 43 larval stage 43 blastocysts 43 assisted reproduction 43 Embryonic stem cells 43 hESCs 43 speciation 43 fertilized 43 Cloning 43 genetically altered 42 assisted reproductive 42 IVF 42 captive breeding 42 neurogenesis 42 genetically engineered mice 42 inbreeding 42 stem cell 42 Embryos 42 ovum 42 lineages 42 progenitor cells 42 genetically distinct 42 eukaryotes 41 hematopoietic stem cells 41 vitro 41 ovarian tissue 41 culturing 41 NK cells 41 organism 41 geneticists 41 cryopreservation 41 hermaphrodite 41 recombinant DNA 40 retrovirus 40 bone marrow stem cells 40 mammal 40 melanocytes 40 zebrafish 40 hybridization 40 genetic manipulation 40 prions 40 Adult stem cells 40 cardiomyocytes 40 genetic modification 40 embryos implanted 40 hormone estrogen 40 ectopic pregnancy 40 inseminated 39 insemination 39 diabetic mice 39 mammalian 39 retinal cells 39 Darwinian evolution 39 translocation