Related by context. Frequent words. (Click for all words.) 67 myelin sheath 60 Myelin 59 myelin 57 collagen fibers 57 amyloid deposits 56 digestive organs 55 connective tissues 55 stratum corneum 55 intestinal lining 54 demyelination 54 amyloid plaque 54 neural tissue 53 myelination 53 neovascularization 53 lymph vessels 53 nerve cells 53 antioxidant enzymes 52 stromal 52 nerve fibers 52 neurotrophic factors 52 peripheral nerves 52 electrical conduction 51 resorption 51 dystrophin protein 51 amyloid protein 51 tau protein 51 Oxidative stress 51 gastrointestinal GI tract 51 tissue 51 oligodendrocytes 51 waxy substance 50 meninges 50 epithelial 50 neural cells 50 collagen 50 neurofibrillary tangles 50 elastin 50 arthritis gout 50 mucin 50 erythrocytes 50 proteolysis 50 granulomas 50 outermost layer 50 beta amyloid plaques 50 protective sheath 50 Schwann cells 50 skin elasticity 49 tissues 49 superoxide dismutase 49 Cartilage 49 sensory nerve 49 pericardium 49 articular cartilage 49 mesenchymal cells 49 axonal 49 mucous membrane 49 epithelial cell 49 chitin 49 retinal cells 49 outer layer 49 dentin 49 epithelium 49 enzymatic activity 49 diseased tissues 49 catalase 49 photoreceptor 49 thyroid hormones 49 pancreatic islet cells 49 ADDLs 49 bones joints 49 spalling 48 oral mucosa 48 phagocytosis 48 keratin 48 fibrous tissue 48 extracellular matrix 48 fibrils 48 remyelination 48 RPE cells 48 vaginal tissue 48 lymphatic vessels 48 mucosal surfaces 48 nutrient absorption 48 epidermal 48 tubules 48 protein kinase C 48 dendritic spines 48 connective tissue 48 muscle tissue 48 BACE1 48 vasculature 48 membranes 48 Ultraviolet light 48 endothelial 48 morphogenesis 48 motor neuron 48 hydroxyapatite 48 photoreceptor cells 48 intestinal tissue 48 Oestrogen 48 vasodilation