Related by context. Frequent words. (Click for all words.) 70 Collagen 68 hyaluronic acid 66 dermis 62 fibroblasts 62 protein 62 epidermis 60 connective tissue 59 extracellular matrix 59 muscle tissue 59 hair follicles 59 blood vessels 59 muscle fibers 58 melanin 58 enzyme 57 fatty tissue 57 epithelial cells 57 proteins 57 follicle 57 follicles 56 cartilage 56 enzymes 55 glutathione 55 lipids 55 hydrogel 55 VEGF 54 endothelial cells 54 tissue 54 tissue regeneration 54 peptide 54 thyroid hormone 54 nerve cells 54 dermal 54 biomaterial 54 amino acid 54 skin 54 myelin 53 bioactive 53 nerve endings 53 wound healing 53 epithelial 53 tissues 53 endothelium 53 pigmentation 53 secretion 53 thrombin 53 hair follicle 52 oxidative 52 hormone 52 scar tissue 52 fatty acids 52 nitric oxide 52 biologically active 52 acetylcholine 52 Vitamin E 52 sweat glands 51 adipose tissue 51 skeletal muscle 51 antibodies 51 arginine 51 peptides 51 amino acids 51 vasculature 51 fibrous 50 cell membranes 50 fatty acid 50 protein synthesis 50 cuticle 50 glands 50 tooth enamel 50 uric acid 50 progenitor cells 50 clotting 50 lipid 50 oxidative stress 50 Protein 50 stem cells 50 calcium 50 enzymatic 50 angiogenesis 50 reactive oxygen species 49 essential fatty acids 49 serum 49 estrogen 49 adenosine 49 actin 49 neurons 49 soft tissues 49 mRNA 49 histamine 49 membrane 49 antibody 49 microspheres 49 capillaries 49 CoQ# 49 synapses 49 biocompatible 49 facial muscles 49 exfoliate 49 axons 48 immune cells 48 astrocytes