Doctor of Medicine, Keimyung University, 1985. Doctor of Medicine in Clinical Pathology, Yeungnam University, 1989. Doctor of Science in Clinical Pathology, Yeungnam University, 1993.
Assistant professor Dongguk University, Seoul, 1989—1995. Professor Catholic University Daegu, since 1995, director adult stem cell therapy center, since 2005. Director Catholic Medical Center Daegu, since 2002, Adult Cell Therapy Center, since 2005.
Committee member Chronic Disease Research Center Keimyung University, Daegu, since 2005. Member of American Association Cancer Research.
Married Eunkyung Jo, December 15, 1993. Children: Hajin, Gaeun, Gyungjin.