Related by context. Frequent words. (Click for all words.) 77 stem cells 71 neural stem cells 68 progenitor cells 68 adult stem cells 66 islet cells 65 mesenchymal stem cells 64 pluripotent stem cells 64 ES cells 62 iPS cells 62 bone marrow 62 embryonic stem cells 62 stem cell therapy 62 fibroblasts 60 stem cells derived 60 gene therapy 60 NK cells 60 stem cell 60 insulin producing 59 immune cells 59 induced pluripotent stem cells 59 stem cell transplants 59 lymphocytes 58 transgenic mice 58 stem cell transplantation 57 tissue 57 dendritic cells 57 antibodies 57 bone marrow transplantation 57 MSCs 56 zebrafish 56 oocytes 56 cells 56 grafts 56 embryonic cells 56 G CSF 56 mutant mice 56 transplantation 56 tissues 56 ex vivo 55 Stem cells 55 stem cell transplant 55 germ cells 55 mammalian cells 55 tumor cells 55 diseased cells 54 endothelial cells 54 VEGF 54 genetically engineered mice 54 bone marrow transplants 54 tumors 54 umbilical cord blood 54 ovarian tissue 54 autologous 53 lung tumors 53 epithelial cells 53 motor neurons 53 knockout mice 53 platelets 53 cytokine 53 skeletal muscle 52 neutrophils 52 mice 52 malignant tumors 52 astrocytes 52 blood platelets 52 proteins 52 GVHD 52 vasculature 52 ovary 52 stem cell therapies 52 nerve cells 52 embryos 52 imatinib 52 photoreceptors 52 cloned embryos 51 pancreas 51 glial cells 51 cytokines 51 glioblastoma 51 follicles 51 macrophages 51 vitro 51 islet cell 51 adipose tissue 51 angiogenic 51 rapamycin 50 diseased tissue 50 chemotherapeutic agents 50 immunological 50 pluripotent 50 GM CSF 50 ovaries 50 monocytes 50 Embryonic stem cells 50 adult stem cell 50 sunitinib 50 collagen 50 interferon alpha 50 adenovirus 50 cancerous cells 50 embryo