Related by context. Frequent words. (Click for all words.) 67 unfertilized egg 66 somatic cells 65 oocytes 63 somatic cell nuclear 62 embryo 61 stem cells 60 oocyte 60 cloned embryos 59 pluripotent stem cells 59 germ cells 58 diploid 57 SCNT 57 blastocyst 57 germline 56 mouse embryos 56 embryos 56 mesenchymal stem cells 56 iPS cells 56 cloned embryo 55 embryonic stem cells 55 allogeneic 55 stem cells derived 55 ES cells 55 pancreatic cells 55 hematopoietic stem cells 54 iPS cell 54 gametes 54 embryonic cells 54 blastocysts 54 bone marrow stem cells 54 iPSCs 54 hESCs 54 islet cells 53 monoclonal 53 Embryos 53 iPS 53 hematopoietic 53 fetal tissue 53 therapeutic cloning 53 adult stem cells 53 autologous 53 mesenchymal 53 ex vivo 52 cultured cells 52 spermatozoa 52 hematopoietic stem cell 52 stem cell 52 hepatocytes 52 induced pluripotent stem cells 52 transgene 52 fibroblast 52 neural stem cells 51 pluripotent 51 HSCs 51 ESCs 51 progenitor cell 51 neural stem cell 51 human embryos 51 transgenic animal 51 vitro 51 ovum 51 RPE cells 51 allogeneic stem cell 50 lymphocytes 50 zygote 50 fertilized egg 50 progenitor cells 50 transgenic mice 50 murine 50 hESC 50 fertilized embryos 50 cardiomyocytes 50 fertilized eggs 50 viral vector 49 genomic DNA 49 thymus 49 embryonic 49 IgG 49 plasmid DNA 49 pluripotency 49 transgenic animals 49 ovarian tissue 49 cells 49 stromal cells 49 ovary 49 mouse embryonic stem 49 neuronal cells 49 chimeric 48 Adult stem cells 48 meiosis 48 cDNA 48 cell transplantation 48 chondrocytes 48 bone marrow derived 48 immunological 48 rhesus macaques 48 clonal 48 sialic acid 48 fibroblasts 48 DNA amplification 48 glycoproteins