Jun Xu, Ph.D., is an associate professor in the Department of Gastroenterology, Peking University People’s Hospital. His research interests focus on the interaction between the microbiome and mucosal immune system in gastrointestinal diseases. His research is funded by the National Natural Science Foundation of China, Capital Health Research and Development of Special, and the Beijing Municipal Natural Science Foundation. He has been selected for the Young Elite Scientist Sponsorship Program by Beijing Association for Science and Technology.