Collagen (Larry Moran, Sandwalk)

i-fb964f5e7483248d7ce2cf8294dc56d1-bccollagen.jpg"Collagen is the major protein component of the connective tissue of vertebrates; it constitutes about 25% to 35% of the total protein in mammals. Collagen molecules have remarkably diverse forms and functions. For example, collagen in tendons forms stiff, ropelike fibers of tremendous tensile strength; in skin, collagen takes the form of loosely woven fibers, permitting expansion in all directions."

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