Edward Donnall "Don" Thomas (March 15, 1920 – October 20, 2012) was an American physician, professor emeritus at the University of Washington, and director emeritus of the clinical research division at the Fred Hutchinson Cancer Research Center. In 1990 he shared the Nobel Prize in Physiology or Medicine with Joseph E. Murray for the development of cell and organ transplantation. Thomas and his wife and research partner Dottie Thomas developed bone marrow transplantation as a treatment for leukemia. Biography Born in Mart, Texas, Thomas often shadowed his father who was a general practice doctor. Later, he attended the University of Texas at Austin where he studied chemistry and chemical engineering, graduating with a Bachelor of Arts in 1941 and a Master's degree in 1943. While Thomas was an undergraduate he met his wife, Dorothy (Dottie) Martin while she was training to be journalist. They had three children. Thomas entered Harvard Medical School in 1943, receiving an Doctor of Medicine in 1946. Dottie became a lab technician during this time to support the family, and the pair worked closely thereafter. He did his residency at Peter Bent Brigham Hospital before serving two years in the United States Army as an internist stationed in Germany. "In 1955, he was appointed physician in chief at the Mary Imogene Bassett Hospital, now Bassett Medical Center, in Cooperstown, New York, an affiliate of Columbia University." At Mary Imogene Bassett, he began to study rodents that received lethal doses of radiation who were then saved by an infusion of marrow cells. At the time, patients who underwent bone marrow transplantation all died from infections or immune reactions that weren't seen in the rodent studies. Thomas began to use dogs as a model system. In 1963, he moved his lab to the United States Public Health Service in Seattle. Thomas also received National Medal of Science in 1990. In 2003 he was one of 22 Nobel laureates who signed the Humanist Manifesto. He died of heart failure. Awards and honors 1965-1969 Hematology Study Section, National Institutes of Health 1969-1973 Member, Board of Trustees and Medical and Scientific Advisory Committee, Leukemia Society of America, Inc. 1970-1974 Clinical Cancer Investigation Review Committee, National Cancer Institute 1974 First Annual Eugene C. Eppinger Lecture at Peter Bent Brigham Hospital and the Harvard Medical School 1975 A. Ross McIntyre Award, University of Nebraska Medical Center 1975 The Henry M. Stratton Lecture, American