Jiajia Sun,M.D.,is a clinician in the Kidney Transplantation Department of the First Affiliated Hospital of Zhengzhou University.He is mainly engaged in the research of kidney transplantation immunity and BK virus infection prevention and treatment.Published 3 SCI papers and 3 Chinese journal papers related to kidney transplantation.He is currently presiding over a youth project of the National Nature Science Foundation of China and a medical science and technology research project of Henan Province.