Developmental and Comparative Immunology (DCI) is an international journal that publishes articles describing original research in all areas of immunology, including comparative aspects of immunity and the evolution and development of the immune system. Manuscripts describing studies of immune systems in both vertebrates and invertebrates are welcome. All levels of immunological investigations are appropriate: organismal, cellular, biochemical and molecular genetics, extending to such fields as aging of the immune system, interaction between the immune and neuroendocrine system and intestinal immunity.