title: Investigations on the kinetics of collagen-metabolism in young and old rats.
mesh_terms: D000375:Aging; D000818:Animals; D003094:Collagen / Q000096:biosynthesis / Q000378:metabolism*; D006909:Hydroxyproline / Q000097:blood; D007700:Kinetics; D008297:Male; D008954:Models, Biological; D051381:Rats; D014332:Tropocollagen / Q000378:metabolism
chemical_list: D014332:Tropocollagen; D003094:Collagen; D006909:Hydroxyproline