Related by context. Frequent words. (Click for all words.) 69 Idaho Gem 54 Snuppy 53 cloned embryo 52 cloned embryos 50 cloning 50 cloned sheep 49 cloned 47 selective breeding 47 Cloning 47 genetics 46 extracted stem cells 46 umbilical cord stem cells 45 extract stem cells 45 genetically engineered 45 embryonic stem cells 45 genetically altered 45 artificial insemination 44 genetically engineer 44 induced pluripotent stem cells 44 somatic cell 44 mouse embryonic stem 44 purebred 43 embryo 43 Patrick Steptoe 43 human neural stem 43 drought tolerant corn 43 transgenic animal 43 Afghan hound 43 stem cells 43 genetically identical 43 stem cell 43 Rudolf Jaenisch 43 unfertilized egg 42 transgenic animals 42 Vet Stem 42 Hwang Woo Suk 42 embryos 42 pluripotent stem cells 42 genetically modified mice 42 iPS cells 42 equine 42 Wilmut 42 induced pluripotent stem iPS 42 mouse embryos 42 human embryos 42 Roslin Institute 42 transgenic 42 foals 42 journal Stem Cells 42 bucking bulls 42 human cloning 42 Shinya Yamanaka 41 gene therapy 41 Ian Wilmut 41 veterinary medicine 41 wild mustang 41 extracting stem cells 41 thoroughbred racehorses 41 Tasmanian tiger 41 somatic cell nuclear 41 crossbreeding 41 reproductive biology 41 geneticists 41 crossbreed 41 RNL Bio 41 genetically 41 chimeras 41 bone marrow stem cells 41 genome sequenced 41 beef cattle 41 artificially inseminated 41 rhesus monkey 41 frozen semen 41 transgenic plants 41 offspring 41 stem cells derived 40 Genetically engineered 40 stem cell colonies 40 therapeutic cloning 40 fertilized embryos 40 bioengineered 40 genome mapping 40 pregnant mares 40 oocytes 40 Roger Highfield 40 asexual reproduction 40 Clonaid 40 Cloned 40 iPSCs 40 Embryonic stem cell 40 Genetic testing 40 parthenogenesis 40 fertilized eggs 40 geldings 40 genetically manipulated 39 Embryos 39 genetically engineered mice 39 chromosome abnormalities 39 gene splicing 39 Fruit flies 39 futurity