Dr. Xiyuan Bai is an Associate Professor of Medical Research in the Department of Medicine at the University of Colorado School of Medicine and Senior Scientist at the Denver VA Medical center and National Jewish Health. He received his Ph.D. in the institute of molecular microbiology and biotechnology from WestfaelischeWilhelms-University of Muenster, Germany. He did his postdoctoral training at institute of genetic, biochemistry and microbiology of Universityof Nuerberg-Erlangeng, Germany, and at McLaughlin Research Institute for Biomedical Science Great Falls, Montana. His area of expertise is cellular and molecular biology, basic immunology and inflammation, animal modeling, respiratory bacterial infections.His main research interests are pulmonary infectious disease-Mycobacteriumtuberculosis (MTB) and Nontuberculosis mycobacteria (NTM), host- pathogen interaction, gene regulation and signal transduction, drug discovery against mycobacteria, and protein-protein (DNA/RNA) interaction.