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Collagen is the main protein of connective tissue in animals and the most
abundant protein in mammals, making up about 40% of the total. It is one
of the long, fibrous structural proteins whose functions are quite
different from those of globular proteins such as enzymes. It is tough and
inextensible, with great tensile strength, and is the main component of
cartilage, ligaments, tendons, bone and teeth. Along with soft keratin, it
is responsible for skin strength and elasticity, and its degradation leads
to wrinkles that accompany aging. It strengthens blood vessels and plays a
role in tissue development. It is present in the cornea and lens of the
eye in crystalline form. It is also used in cosmetic surgery and burns
surgery. |
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