collagen line icon. connective tissue protein pictogram. e

collagen connective tissue protein fibrous icon cartilage bone joint structural fiber elastin gelatin arthritis sign matrix support scaffold pictogram supportive peptides hydrolyzed fibrillar extracellular biomolecule knee elasticity antiaging hyaline health supplement fibrocartilage cartilaginous repair osteoarthritis hydration firmness care tensile wellness vector illustration boost cartilagespecific youth flexibility regeneration synthesis outline