title: Biochemical measurement of lung connective tissue.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D003094:Collagen / Q000378:metabolism*; D004549:Elastin / Q000378:metabolism*; D005260:Female; D006801:Humans; D006909:Hydroxyproline / Q000378:metabolism; D008168:Lung / Q000378:metabolism* / Q000502:physiology; D008176:Lung Volume Measurements; D008297:Male; D008875:Middle Aged; D009584:Nitrogen / Q000378:metabolism
chemical_list: D003094:Collagen; D004549:Elastin; D009584:Nitrogen; D006909:Hydroxyproline