Cartilage is found throughout the body giving shape to noses and ears and cushion for the joints. However when damaged, is not easily replaced which is why synthetic materials is often used to replace damaged cartilage. However, Japanese scientists have grown new cartilage using stem cells found in the ear of all places. Specifically, the perichondrium which lines the cartilage of the ear. Perichondrium is also the layer under which a hematoma develops after ear trauma (ie wrestling) that …