General Manager Koji Asahara and his study group of “National Center for Child Health and Development announced that they found the gene which plays a huge role when a tendon becomes developed. A tendon has an important role to join muscle & bone, and then transmit the power of muscle to bone. They put the result on “Proceedings of the National Academy of Sciences (on line version)” dated May 24th, 2010. There are few blood vessels, which convey nourishments, at such a tendon as Achilles’ tendon, so its regenerating power is quite weak. Therefore, it is not so easy to repair a torn tendon. It leads to the development of its new treatment. And also it leads to find the cause of inborn tendon disorder.
　
 They focused on the function of the gene of “Mohawk”, which is one of control towers and provides direction when parts of the body are made. It worked only by tendon cells. They made the mouse without this gene by the genetic manipulation, and then found it had immature tendon.
　
 The spiral band of this mouse’s tendon had never been fully developed. Its tension strength was almost half of that of usual mouse.