The Handbook of Human Immunology, Second Edition is a complete guide to molecular and cellular immunology for practicing clinicians. It combines basic explanations of laboratory tests with more than 100 tables full of reference, and includes up-to-date information on new developments in immunogenetics. Introductory chapters provide an overview of the molecular basis of immune responses and immunological disorders, focusing on the role of cell receptors, accessory molecules, and cytokines in these processes. The text emphasizes clinically relevant immunological parameters, and clarifies the basic principles underlying immune system assays, as well as applications and interpretations of immune tests.