The incidence of autoimmune diseases is increasing worldwide, and the search for better management of these diseases and even for a cure is being pursued by scientists from many disciplines. Tools from the areas of genetics, neuroscience, cell biology, virology, and infectious disease are being applied to the problem and are yielding useful results. This volume contains the first section of the proceedings of a large, comprehensive meeting held in Sorrento, Italy. Because the meeting focused on such an important area of human health, four volumes have been dedicated to it: Part A presents new principles in autoimmunity, including the roles of key players such as designed ankyrin repeat proteins, SLAM-associated protein, interleukin-12, human proteinase 3, the complement system, IgG, disturbances in cytokine synthesis, and IFN-γ blockers. The second section of the volume takes a look at new diagnostic tools, including screening of endothelial expression libraries, electrical skin impedance, and IgA anti-tissue transglutaminase antibody assays. Autoimmunity, Part B continues the presentation of basic research and its applications with a focus on genetics. Parts C and D present the clinical research in various manifestations of autoimmune disease and its treatments. NOTE: Annals volumes are available for sale as individual books or as a journal. For information on institutional journal subscriptions, please visit www.blackwellpublishing.com/nyas. ACADEMY MEMBERS: Please contact the New York Academy of Sciences directly to place your order (www.nyas.org). Members of the New York Academy of Science receive full-text access to the Annals online and discounts on print volumes. Please visit http://www.nyas.org/MemberCenter/Join.aspx for more information about becoming a member