title: Changes in collagen with age. 3. The isolation and partial characterization of the pre-  fragment.
mesh_terms: D000125:Achilles Tendon; D000375:Aging; D000818:Animals; D002417:Cattle; D002845:Chromatography; D003094:Collagen; D008722:Methods; D051379:Mice; D012867:Skin
chemical_list: D003094:Collagen