Related by context. Frequent words. (Click for all words.) 75 photoreceptors 67 nerve cells 65 neurons 65 neurones 64 retina 64 pancreatic cells 64 neural stem cells 64 motor neurons 63 zebrafish 62 transgenic mice 62 tumor cells 62 germ cells 62 retinal 61 dopamine producing 61 islet cells 61 immune cells 61 bone marrow stem cells 60 fibroblasts 60 cells 60 stem cells 60 diseased cells 60 cultured cells 59 cardiomyocytes 59 progenitor cells 59 proteins 59 astrocytes 59 retinas 59 hepatocytes 59 nerve fibers 59 mutant mice 59 neuron 59 visual cortex 58 neuronal 58 endothelial cells 58 ES cells 58 diabetic mice 58 glial cells 58 hematopoietic stem cells 58 diseased tissue 58 myelin 58 lymphocytes 58 T lymphocytes 58 cancerous cells 57 macrophages 57 axons 57 insulin producing 57 mice 57 vasculature 57 deficient mice 57 tumor suppressor gene 57 mammalian cells 57 dendritic cells 56 microglia 56 alpha synuclein 56 endothelial cell 56 VEGF 56 malignant cells 56 neurogenesis 55 vivo 55 macrophage 55 melanocytes 55 autophagy 55 fluorescent protein 55 knockout mice 55 quantum dots 55 yeast cells 55 neurodegeneration 55 amyloid plaques 55 epithelial cells 55 tumor suppressor genes 54 tumors 54 monocytes 54 retinitis pigmentosa 54 hESCs 54 tissue 54 optic nerve 54 GDNF 54 nanocrystals 54 NK cells 54 skeletal muscle 54 TGF beta 54 enzyme 54 leukocytes 54 iPS cells 54 SIRT1 54 blood vessels 54 optic nerves 54 cilia 54 mesenchymal stem cells 54 osteoblasts 53 genetically engineered mice 53 apoptotic 53 fluorescence 53 pluripotent stem cells 53 Adult stem cells 53 RNA molecules 53 induced pluripotent stem cells 53 endothelial 53 nuclei 53 mitochondria 53 angiogenic