title: Age-related alteration in human heart collagen.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D003094:Collagen / Q000032:analysis / Q000378:metabolism; D006321:Heart / Q000502:physiology; D006801:Humans; D006909:Hydroxyproline / Q000032:analysis; D008297:Male; D003012:Microbial Collagenase / Q000378:metabolism; D008875:Middle Aged; D009206:Myocardium / Q000378:metabolism; D013329:Structure-Activity Relationship
chemical_list: D003094:Collagen; D003012:Microbial Collagenase; D006909:Hydroxyproline