Immunology is a very complicated topic that many people find intimidating. Nonetheless, many gastrointestinal diseases are immunological in origin or exhibit significant imunological components. This book unravels the subject of immunology into three clear areas: immunology itself, gut immunology and inflammation. Detailed and easy-to-understand explanations of these areas are given, with a focus towards those aspects of immunology that are important at the site of the gut. In addition, this book contains a highly illustrated A to Z listing of over 35 commonly encountered gastrointestinal disorders (including: chronic granulomatous, Crohn's disease, graft-versus-host-disease, pernicious anemia, refractory sprue, and ulcerative colitis). Detailed descriptions of each disorder cover areas including clinical features, epidemilology, diagnosis, immunopathogenesis, and treatment.