Neil S. Greenspan is an immunologist and clinical pathologist on the faculty in the Department of Pathology of Case Western Reserve University. He studied biochemical sciences at Harvard, received M.D. and Ph.D. (immunology) degrees from the University of Pennsylvania, and pursued post-graduate training in clinical pathology and molecular immunology at Barnes Hospital/Washington University. Since joining the Case faculty in 1986, Neil has studied immunity to bacterial and viral pathogens, autoimmunity, and transplantation immunology, pursued the implications of evolution for understanding immunology, and directed the Histocompatibility and Immunogenetics Laboratory of University Hospitals Cleveland Medical Center. He teaches immunology and related fields to medical students, graduate students, and pathology residents. Neil is a Senior Editor at Pathogens and Immunity and a member of the American Society for Histocompatibility and Immunogenetics, American Association of Immunologists, American Society for Microbiology, and International Society for Evolution, Medicine, and Public Health.