Professor Jun was recognized for his research achievement that discovered a new protein controlling the ‘T-lymphocyte’ function which is responsible for immune system of human body and was appointed for Top Achievements of ‘2012 Basic Research in Science and Engineering’. On the surface of T-lymphocytes is a receptor (TCR) that detects external invading materials and the Research Team of Professor Jun identified that this receptor combines with ‘IGSF4 protein’ inside the cell membrane of T-lymphocytes to amplify the signal. It was the first-ever discovery that identified that a new protein called IGSF4 is responsible for controlling the function of T-lymphocyte.