... human body, spread in so many parts such as all skin, bone, ligament, entrails, etc. It ... body weight. Especially the skin is consisted of about 70 percent collagen.Shark Collagen is predominantly ... . Collagen is used in medicine to make all kinds of medical material, such as artificial skin, trachea ... Collagen is widely used in medicine for treatment of arthritis, sinew and bone pain,stop bleeding, ...