Gou Young Koh is a distinguished professor at KAIST Graduate School of Medical Science and Engineering, and for the last 15 years he has directed the "National Lab of Vascular Biology". During this time, his research team has made numerous major advances and breakthroughs in the field of angiogenesis and lymphangiogenesis. Notably, he and his research team discovered and generated several novel and potent modulators of angiogenesis ? three angiopoietin-like proteins, COMP-Ang1, DAAP and Valpha ? based on their keen observations and creative ideas. More recently, he and his team have been working on the unique features of organotypic and tumor angiogenesis and vascular remodeling, as well as on the characterization of key factors involved in the differentiation of endoblasts derived from ESCs.