Antigen presentation is central to the immune response, and is instrumental in ensuring that the response mounted is that best suited to the eradication of the particular microbe faced. In this volume, experts in the field provide state-of-the-art descriptions of the antigen presentation pathways. How do viruses disrupt these critical pathways, and to what effect? Do all tissues present antigen in the same way? If not, why? What are the consequences of dysfunctional antigen presentation, seen in certain genetic disorders? This book considers not only the molecular details, but also their relevance to the whole organism.