Related by context. Frequent words. (Click for all words.) 68 nerve fibers 68 nerve cells 62 axons 61 motor neurons 60 neuronal 60 neurons 58 astrocytes 58 proteins 58 amyloid plaques 57 enzyme 57 protein synthesis 56 beta amyloid 56 protein 56 mitochondria 56 amyloid 55 amyloid beta 55 plasticity 54 neurodegeneration 54 neuron 54 blood vessels 54 epithelial 54 lipids 54 acetylcholine 54 collagen 53 endothelial cells 53 microtubules 53 fibroblasts 53 immune cells 53 p# [001] 53 connective tissue 53 autophagy 52 cortex 52 lymphocytes 52 muscle tissue 52 extracellular matrix 52 telomeres 52 tau 51 neurotransmitter 51 signaling pathway 51 PTEN 51 cortical 51 epithelial cells 51 cell membranes 51 synapses 51 leptin 51 cell membrane 50 macrophages 50 outer layer 50 synapse 50 synaptic 50 mRNA 50 progenitor cells 50 tumor cells 50 dendritic cells 50 enzymes 50 telomerase 50 skeletal muscle 50 messenger RNA 50 hair follicles 50 actin 50 neural stem cells 49 macula 49 oxidative stress 49 chromatin 49 insulin producing 49 immunological 49 microRNAs 49 lipid 49 BDNF 49 glutamate 49 fatty tissue 49 neutrophils 49 cells 49 angiogenesis 49 autoimmunity 49 gene 49 dopamine 49 tissues 48 atherosclerosis 48 retina 48 melanin 48 mitochondrial 48 tissue 48 genetic defect 48 inhibitory 48 thyroid hormone 48 neurodegenerative diseases 48 neural 48 gene expression 48 optic nerve 48 cilia 48 chromosomal 48 pancreas 48 cytokines 48 DNA methylation 47 phenotype 47 molecule 47 VEGF 47 hippocampus 47 neurodegenerative disease 47 islet cells