title: Determination of human chronological age by study of a collagen sample.
mesh_terms: D000293:Adolescent; D000328:Adult; D000375:Aging; D003094:Collagen / Q000378:metabolism*; D003964:Diaphragm; D006801:Humans; D008297:Male; D008722:Methods; D003012:Microbial Collagenase / Q000378:metabolism; D008875:Middle Aged; D013710:Tendons / Q000378:metabolism*
chemical_list: D003094:Collagen; D003012:Microbial Collagenase