title: The pathophysiology of ageing collagen.
mesh_terms: D000375:Aging; D003094:Collagen / Q000502:physiology*; D003095:Collagen Diseases / Q000503:physiopathology*; D006801:Humans; D007596:Joints / Q000503:physiopathology; D003012:Microbial Collagenase / Q000378:metabolism
chemical_list: D003094:Collagen; D003012:Microbial Collagenase