This volume features contributions from participants of the ESRF symposium on "Immunotherapy in 2020a "Visions and Trends for Targeting Inflammatory Diseases" held in Potsdam near Berlin, Germany, in October 2006. The symposium presentations covered the main mechanisms of immunoregulation such as peripheral and central tolerance, epigenetic programming, immunologic memory, and regulatory networks in inflammation as well as novel experimental and clinical approaches for targeting inflammation in autoimmunity and transplantation. An important related question is how recent findings in immunological research can lead to improved diagnostics, new drugs, and better therapies. The targeting of novel pathways and immunoregulatory mechanisms, the challenge of immunologic memory for lastingly successful anti-inflammatory therapy, new approaches for adoptive T cell and polyclonal antibody therapies, and the individualization of immunomodulatory therapies are thereby topics of this volume.