title: Quantitative analysis of types I and II collagens in human intervertebral discs at various ages.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D000596:Amino Acids / Q000032:analysis; D002358:Cartilage, Articular / Q000032:analysis; D002648:Child; D003094:Collagen / Q000302:isolation & purification*; D005260:Female; D006027:Glycosides / Q000032:analysis; D006801:Humans; D006909:Hydroxyproline / Q000032:analysis; D007403:Intervertebral Disc / Q000032:analysis*; D008161:Lumbosacral Region; D008297:Male; D008592:Menisci, Tibial / Q000032:analysis; D008875:Middle Aged
chemical_list: D000596:Amino Acids; D006027:Glycosides; D003094:Collagen; D006909:Hydroxyproline