title: Bone collagen metabolism in aging rats.
mesh_terms: D000375:Aging; D000818:Animals; D001842:Bone and Bones / Q000032:analysis / Q000378:metabolism*; D002113:Calcification, Physiologic; D003094:Collagen / Q000032:analysis / Q000096:biosynthesis / Q000378:metabolism*; D011392:Proline / Q000378:metabolism; D051381:Rats; D014316:Tritium
chemical_list: D014316:Tritium; D003094:Collagen; D011392:Proline