Related by context. Frequent words. (Click for all words.) 49 cloned embryo 49 extracting stem cells 49 stem cells 48 umbilical cord stem cells 48 extract stem cells 47 unfertilized egg 47 stem cells derived 46 cloned embryos 46 iPSCs 46 transgenic animals 46 embryonic stem cells 45 pluripotent cells 45 embryo 45 cell transplantation 45 induced pluripotent stem iPS 44 stem cell therapy 44 iPS cells 43 Hwang Woo Suk 43 pluripotent stem cells 43 somatic cell nuclear 43 stem cell 43 Wilmut 43 embryos 43 retinal cells 43 Snuppy 43 Amgen discovers develops manufactures 43 Adult stem cells 43 curing diseases 43 somatic cells 42 transgenic animal 42 extracted stem cells 42 diseased tissues 42 specimen 42 cloned sheep 42 unfertilized eggs 42 Ian Wilmut 42 stem cell therapies 42 genomic sequencing 42 somatic cell 42 biological molecules 42 ailing 41 embryonic cells 41 transplanted tissue 41 oocytes 41 ES cells 41 adult stem cells 41 Embryonic stem cells 41 RPE cells 41 human embryos 41 stem cell differentiation 41 mammal 41 pancreases 41 mitochondrial genome 41 regenerative 41 bone marrow stem cells 41 hepatocyte 41 organism 40 fertilized embryos 40 iPS cell 40 multicellular organisms 40 ovum 40 HeLa cells 40 reproductive biology 40 bone marrow stem cell 40 macaque monkeys 40 zebra fish 40 Embryonic stem cell 40 biobanks 40 genetically altered mice 40 diseased cells 40 induced pluripotent stem cells 40 hESCs 40 therapeutic cloning 40 melanoma tumors 40 Stem cell 40 neural stem cells 40 iPS 40 cryopreserved 40 ovarian tissue 40 developmental biologist 40 Shinya Yamanaka 40 Embryos 40 ovary 39 pancreatic islet cells 39 cloning 39 germ cells 39 mollusc 39 viral vector 39 Roslin Institute 39 Sumatran rhinos 39 Adult Stem Cells 39 endangered turtles 39 gene therapy 39 Sydney Taronga Zoo 39 clouded leopards 39 bioengineer 39 regenerative powers 39 exosomes 38 genetically modified mice 38 Afghan hound 38 Stem Cell Biology