This novel, multidisciplinary handbook highlights recent evidence that antigen presenting cells (APCs) are not only key players in the initiation or prevention of an antigen-specific T lymphocyte-mediated adaptive immune response, but also critical regulators and integrators in the interplay between our innate and adaptive immune system. Structured in a clear way to allow access to a very broad readership, the book is written from the viewpoint of a biochemist, immunologist, and scientist with experience in drug development. It covers all cell types involved in antigen presentation, providing the latest immunological facts with a focus on drug development. Backed by a glossary explaining all important technical terms, this short but comprehensive reference covers basic introductory aspects right up to details for advanced specialists.