Related by context. Frequent words. (Click for all words.) 75 tumor cells 73 cancerous cells 70 diseased tissue 69 malignant cells 65 immune cells 63 molecules 63 proteins 63 cells 62 tumors 60 stem cells 60 cancerous tissue 59 pancreatic cells 59 NK cells 59 peptides 59 anticancer drugs 59 nanoparticles 58 mammalian cells 58 liposomes 58 antibodies 58 nerve cells 58 tissues 58 enzymes 57 macrophages 57 molecule 57 proteases 57 islet cells 57 dendritic cells 56 lymphocytes 56 biomolecules 56 lung tumors 56 neural stem cells 56 antigens 56 intracellular 56 T lymphocytes 55 motor neurons 55 vasculature 55 oncogenes 55 bone marrow stem cells 54 tumor 54 microspheres 54 receptors 54 fibroblasts 54 membrane proteins 54 blood vessels 54 RNA molecules 54 germ cells 54 progenitor cells 54 siRNAs 54 cell membranes 54 neurones 54 prions 53 cell membrane 53 enzyme 53 nanoparticle 53 cancerous tumors 53 mRNAs 53 siRNA 53 lipids 53 epithelial cells 53 microorganisms 53 photoreceptors 53 monocytes 53 hair follicles 53 cardiomyocytes 53 neurons 53 tissue 52 nano particles 52 bacteria 52 phage 52 messenger RNA 52 organelles 52 retroviruses 52 macrophage 52 Adult stem cells 52 DNA strands 52 microRNAs 51 chemotherapeutic agents 51 ligands 51 malaria parasite 51 mitochondria 51 membranes 51 cytotoxic 51 astrocytes 51 protein 51 signaling molecules 51 fusion protein 51 mesenchymal stem cells 51 antibody 51 thymus 51 gastrointestinal tract 51 biofilms 51 peptide 51 yeast cells 51 malaria parasites 51 melanocytes 51 ES cells 51 organisms 51 reactive oxygen species 51 endothelial cells 50 molecular 50 viruses