Bone aging.
D000368:Aged; D000375:Aging; D001846:Bone Development; D001842:Bone and Bones / Q000032:analysis / Q000502:physiology*; D002454:Cell Differentiation; D055598:Chemical Phenomena; D002621:Chemistry; D003094:Collagen / Q000032:analysis / Q000378:metabolism; D006025:Glycosaminoglycans / Q000378:metabolism; D006801:Humans; D006909:Hydroxyproline / Q000032:analysis; D008875:Middle Aged; D010006:Osteoblasts / Q000378:metabolism; D010010:Osteoclasts / Q000378:metabolism; D010012:Osteogenesis; D011509:Proteoglycans / Q000096:biosynthesis
D006025:Glycosaminoglycans; D011509:Proteoglycans; D003094:Collagen; D006909:Hydroxyproline