Developmental and Comparative Immunology (DCI) is an international journal that publishes articles describing original research in the areas of development of the immune system and comparative immunology. Manuscripts describing studies dealing with self/nonself discrimination in nontraditional vertebrate and invertebrate models are welcome. All levels of immunological investigation are appropriate: organismal, cellular, biochemical, and molecular genetics, extending to such fields as aging of the immune system and interactions between the immune and neuroendocrine systems. Developmental and Comparative Immunology will publish full-length research articles and brief communications.