Dr. Liu Ling, chief physician, professor and tutor of master students. Engaged in clinical and experimental research of hematological diseases for more than 20 years. He has rich clinical experience in the diagnosis and treatment of hematopoietic stem cell transplantation and its complications, acute and chronic leukemia, lymphoma and multiple myeloma. As a famous expert of hematopoietic stem cell transplantation in our city, he has presided over many special trainings on hematopoietic stem cell transplantation in Chongqing, which has promoted the development of hematopoietic stem cell transplantation technology in Chongqing, and the hematopoietic stem cell transplantation technology he presided over has reached the advanced level at home and abroad. He has won 863 national sub-projects and 2 provincial and ministerial-level projects, published more than 20 academic papers, and won the second prize of military scientific and technological progress 1. Main research interests: basic and clinical research of hematopoietic stem cell transplantation. He is also the chairman of the hematology oncology Committee of Chongqing Anti-cancer Association, the national member of the hematology branch of China Medical Doctor Association, and the member of the hematology Committee of Chongqing. Editorial Board of chongqing medical Journal, Journal of Medical Laboratory and Clinical Sciences, Journal of Clinical Hematology and Special Editorial Board of Journal of Chongqing Medical University. They are candidates for academic and technical leaders in Chongqing. Main research interests: basic and clinical research of hematopoietic stem cell transplantation.