Biosynthesis, secretion and crosslinking of collagen with reference to aging.
D000375:Aging; D055598:Chemical Phenomena; D002621:Chemistry; D003094:Collagen / Q000096:biosynthesis / Q000378:metabolism*; D003238:Connective Tissue / Q000378:metabolism; D006801:Humans; D011347:Procollagen / Q000378:metabolism
D011347:Procollagen; D003094:Collagen