Related by context. Frequent words. (Click for all words.) 75 stem cells 73 induced pluripotent stem cells 72 iPS cells 72 embryonic stem cells 71 ES cells 67 adult stem cells 66 neural stem cells 66 Stem cells 65 embryonic cells 64 Adult stem cells 64 bone marrow stem cells 64 pluripotent 64 Embryonic stem cells 63 cloned embryos 62 progenitor cells 62 islet cells 61 germ cells 61 mesenchymal stem cells 60 pancreatic cells 60 cardiomyocytes 59 stem cells derived 58 stem cell 57 oocytes 56 somatic cell nuclear 56 insulin producing 56 stem cell therapies 55 human embryonic stem 55 transgenic mice 55 fibroblasts 53 cells 53 therapeutic cloning 53 NK cells 53 human embryos 52 stem cell therapy 52 RNA interference 52 embryo 52 parthenogenesis 52 adult stem cell 51 stem cell transplantation 51 knockout mice 51 mammalian cells 51 gene therapy 51 lymphocytes 51 embryos 51 zebrafish 50 miRNAs 50 Stem Cells 50 immune cells 50 retrovirus 50 destroying embryos 50 genetically engineered mice 50 antibodies 50 Embryos 49 embryonic stem cell 49 RNA molecules 49 regenerative medicine 49 ex vivo 49 microRNAs 49 Embryonic stem cell 49 miRNA 48 stem cell biology 48 regenerative cells 48 Stem Cell 48 proteins 48 CD4 + T 48 dendritic cells 48 thymus 48 recombinant protein 48 fluorescent protein 48 epithelial cells 48 retroviruses 48 embryonic 48 genetic abnormalities 47 angiogenic 47 diseased cells 47 stem cell transplants 47 neurogenesis 47 Cells 47 oncogenes 47 glial cells 47 telomerase 47 mutant mice 47 recombinant 47 mammalian cell 47 fertilized eggs 47 gene sequences 47 cloning 47 genes 47 astrocytes 47 genetic defects 47 cytokine 47 recombinant DNA 47 genetically identical 46 therapeutic proteins 46 monoclonal antibodies 46 medulloblastoma 46 transcription factors 46 genetically matched 46 monocytes 46 Cloning 46 RNAs