Related by context. Frequent words. (Click for all words.) 74 cells 62 Neurons 61 cell 59 Cell 57 progenitor cells 56 Tumors 56 epithelial cells 56 Molecules 55 mammalian cells 55 Bacteria 54 Mitochondria 53 tumor cells 53 Embryos 53 Proteins 53 proteins 53 Mice 52 Nanoparticles 52 lymphocytes 52 immune cells 52 fibroblasts 52 mouse embryos 51 stem cells 51 ES cells 51 Platelets 51 neurones 51 Antibodies 51 Protein 50 tissues 50 Stem Cells 50 hematopoietic stem cells 50 mutant mice 50 endothelial cells 50 neural stem cells 50 Peptides 50 Genes 50 Nanotubes 50 retinal cells 50 T lymphocytes 50 nerve cells 50 organelles 50 hESCs 50 Compounds 49 molecules 49 macrophages 49 membranes 49 RNAs 48 Organisms 48 NK cells 48 germ cells 48 bone marrow stem cells 48 Nanoparticle 48 Kidneys 48 transgenic mice 48 Lesions 47 neurons 47 yeast cells 47 plasma membrane 47 pluripotent stem cells 47 cardiomyocytes 47 Enzymes 47 mesenchymal stem cells 47 deficient mice 47 cultured cells 47 osteoblasts 47 Viruses 47 endothelial cell 47 fibrils 47 epithelium 47 Apoptosis 47 astrocytes 47 hepatocytes 47 peptides 47 cancerous cells 46 Molecule 46 Adult stem cells 46 Receptors 46 Inhibition 46 dendritic cells 46 signaling molecules 46 nanocrystals 46 membrane proteins 46 Solar Cells 46 Particles 46 glial cells 46 diseased cells 46 enzymes 46 malignant cells 46 intracellular 46 liposomes 46 pancreatic cells 46 vesicles 46 monocytes 46 Stem cells 46 islet cells 46 Pathogens 46 tumor suppressor genes 45 Membrane 45 photoreceptors 45 Peptide 45 isoforms 45 RNA molecules