Progress in Basic and Clinical Immunology is a result of the 14th European Immunology Meeting - EFIS 2000, held in Poznan, Poland, on 23-27 September 2000. EFIS 2000 gathered over 1400 immunologists from all over the world. It was an exceptionally memorable meeting for a number of reasons: 1) it was held in the last year of the century and the millennium, thus provoking conclusions of past achievements of immunology and projections for the future; 2) it was held in Poland, a country that is a symbol of struggle for freedom for a large number of scientists originating from the `Eastern Bloc countries; and 3) EFIS celebrated its 25th anniversary at this occasion. This comprehensive volume contains 62 chapters grouped into 11 sections: T-cells, Immune Receptors, Antigen Presentation/Dendritic Cells, Cytokines, Immunodeficiencies, Autoimmunity, Allergy/Inflammation, Immunotherapy, Vaccines, Tumor Immunology, and Cancer Immunotherapy.