title: "Myxomatous" mitral valves: collagen dissolution as the primary defect.
mesh_terms: D000328:Adult; D003094:Collagen / Q000502:physiology*; D006025:Glycosaminoglycans / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D008945:Mitral Valve Prolapse / Q000473:pathology*
chemical_list: D006025:Glycosaminoglycans; D003094:Collagen