Dr. Muhammad Mohiuddin is currently a chief of transplantation section of Cardiothoracic Surgery Research Program at National Heart Lung and Blood Institute of National Institute of Health. Before joining NIH in 2005 he held faculty positions at University of Pennsylvania, Philadelphia and Rush University, Chicago. Dr. Mohiuddin is involved in the field of xenotransplantation since 1992 and has been instrumental in starting the xenotransplantation research programs at the above institutions. Dr Mohiuddin’s primary interest is in understanding the role of B lymphocytes in Transplantation, especially xenograft rejection. His other interests include transplantation tolerance and immune modulation. He has made several contributions to the fields of transplantation and xenotransplantation with over 120 publications and over 100 abstracts as well as numerous presentations. Dr Mohiuddin is an elected councilor of International Xenotransplantation Association / TTS. He is a member of prestigious societies; The Transplantation Society and American Society of Transplant Physicians. He reviews manuscripts for journals; Transplantation, Transplant Immunology, xenotransplantation, Journal of Heart and Lung Transplantation, etc. He has received several NIH and non-NIH grants during his academic career.