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cartilage |
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cartilageFlexible bluish-white connective tissue made up of the protein collagen. In cartilaginous fish it forms the skeleton; in other vertebrates it forms the greater part of the embryonic skeleton, and is replaced by bone in the course of development, except in areas of wear such as bone endings, and the discs between the backbones. It also forms structural tissue in the larynx, nose, and external ear of mammals. Cartilage does not heal itself, so where injury is severe the joint may need to be replaced surgically. In a 1994 trial, Swedish doctors repaired damaged knee joints by implanting cells cultured from the patient's own cartilage. In 1999 US chemists created an artificial liquid cartilage for use in repairing torn tissue. The cartilage is injected into a wound or damaged joint and will harden with exposure to ultraviolet light. Clinical trials commenced in 2000. |
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I didn't laugh -- I am always thankful for that -- but the strain ruptured every cartilage in me, and for weeks afterward I could hear my bones clack when I walked. Her clean-cut head with prominent, bright, spirited eyes, broadened out at the open nostrils, that showed the red blood in the cartilage within. It was about six inches long, and thicker than my thumb, with some indications of dried cartilage at one end of it. |
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