Related by context. Frequent words. (Click for all words.) 69 cryopreserved 62 oocytes 61 somatic cell 60 undifferentiated cells 59 umbilical cord stem cells 58 oocyte 57 extract stem cells 57 stem cells 56 myoblasts 55 cryopreservation 55 allogeneic 55 cell transplantation 55 transplanted stem cells 54 pluripotent cells 54 engrafted 54 transplantable 54 autologous 54 unfertilized eggs 54 fetal tissue 53 unfertilized human 53 unfertilized egg 53 Cord blood 53 pluripotent stem cell 53 hESCs 52 embryo 52 progenitor cell 52 pancreases 52 ovum 52 mesenchymal 52 ovarian tissue 52 allografts 52 transgenic mouse 52 RPE cells 52 gametes 52 bone marrow stem cell 52 cloned embryo 52 germ cells 52 gamete 52 ovarian stimulation 52 somatic cells 51 Embryos 51 fertilized eggs 51 endothelial progenitor cells 51 ex vivo 51 xenograft 51 mouse embryos 51 blastocyst stage 51 hematopoietic stem cell 51 hematopoietic 51 IVF embryos 51 islet cells 51 regenerate tissue 51 hematopoietic stem cells 51 ovary 51 pluripotent stem cells 51 engraft 51 epididymis 51 autologous bone marrow 50 cadaveric 50 mesenchymal stem cells 50 vitro 50 Umbilical cord blood 50 transplantation 50 antithrombin 50 adult stem cells 50 Autologous 50 imprinted genes 50 embryos 50 transplanted tissue 50 formalin fixed paraffin embedded 50 mesenchymal cells 50 fibroblast cells 50 cord blood 50 tissue 50 bone marrow stem cells 50 hematopoietic cell 50 spermatozoa 50 ES cells 50 pancreatic islet cells 50 blastocysts 50 chondrocytes 50 cultured cells 50 neural stem cell 50 neonate 50 iPS cell 49 implantation 49 Implantation 49 diploid 49 culturing 49 fertilized embryos 49 mouse embryo 49 HSCs 49 corneal tissue 49 bone marrow derived 49 prostatic 49 blastocyst 49 morphogenesis 49 hepatocytes 49 umbilical cord blood 49 stem cells derived 49 neural stem cells