Related by context. Frequent words. (Click for all words.) 71 myelin sheath 67 Myelin 65 meninges 63 nerve fibers 62 peripheral nerves 62 demyelination 61 bones joints 60 connective tissues 59 collagen fibers 59 myelin 59 oligodendrocytes 59 fibrous tissue 59 neural tissue 58 nerve cells 58 pleura 58 muscles ligaments 58 substantia nigra 58 connective tissue 57 Schwann cells 57 sensory nerve 57 stroma 56 progressive degeneration 56 extracellular matrix 56 axons 56 pericardium 56 stratum corneum 56 Wnt pathway 56 tau protein 56 sensory nerves 56 neovascularization 55 gastrointestinal GI tract 55 articular cartilage 55 phagocytosis 55 Nerve cells 55 protective sheath 55 NMDA receptors 55 mesenchymal cells 55 skeletal muscles 55 peripheral tissues 55 outermost layer 55 SOD1 54 neuronal cell 54 elastin 54 epididymis 54 cytoskeleton 54 adhesion molecules 54 amyloid deposits 54 glia 54 dendritic spines 54 integrins 54 tubules 54 cell adhesion 54 glial cells 54 axonal 54 vasculature 54 Oxidative stress 54 proteolysis 53 chondrocytes 53 glial 53 fibrin 53 neurofibrillary tangles 53 epithelial cell 53 outer layer 53 endothelial 53 amyloid beta protein 53 glutamate receptors 53 tumor metastasis 53 misfolded 53 nerve endings 53 lymphatic vessels 53 innate immune response 53 epithelium 53 innate immune 53 cannabinoid receptors 53 nerve impulses 53 intestinal lining 53 neurotransmission 52 glial cell 52 dopaminergic neurons 52 nutrient absorption 52 muscles tendons 52 Treg cells 52 tumorigenesis 52 endothelial cell 52 retinal cells 52 villi 52 metabolically active 52 axon 52 Aβ 52 Notch signaling 52 estrogen receptors 51 cortical bone 51 plasma membrane 51 stromal 51 cadherin 51 neuronal cells 51 dermis 51 microtubules 51 microtubule 51 Neuronal 51 fibrils