Jacalyn Duffin began her career as a hematologist and a historian. Now, she is Professor in the Hannah Chair of the History of Medicine at Queen’s University. Besides, Medical Saints, Duffin is the author of several other books, as well as numerous research articles. She has served as President of both the American Association for the History of Medicine as well as the Canadian Society for the History of Medicine. In Medical Saints: Cosmas and Damian in a Postmodern World, Jaclyn Duffin explores the santi medici, or the physician and pharmacist brother saints, Cosmas and Damian, and how people have taken the saints with them, spreading the worship of the divine twins throughout Italy, North America, and the rest of the world. Despite questioning even her own credentials pertaining to the research on the quest, which combined sociology, anthropology, psychology, religion, medicine, and history, Duffin thoroughly covers the subjects, using detailed and committed research methods. A hematologist, Jaclyn Duffin began her journey in Thunder Bay, Ontario. She had her own clinic there, where she lived with her husband, a doctor. When he passed away, she tried to re-establish her life elsewhere; but struggled to find jobs in her line of work. Duffin remarried, and moved to Paris briefly with her new husband for his job. Upon return to Canada, Duffin still had no permanent occupation. She came across an opportunity at the University of Ottawa, where she was to consult on a case for a fellow hematologist. She was given no background information, and had to simply read the blood samples on the slides and draw her own conclusions. Duffin’s report stated that the patient had been a female, who had Leukemia; she had gone into remission, the cancer had returned, and then she had gone into second remission- this is where the slides ended. Jacalyn Duffin concluded the patient must have died- it was scientifically proven that you have a chance to survive if you stay in first remission, but if it returns and you go into a second remission, you will likely be weak and not survive much longer. After reporting this to her collea