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The importance of thymus-dependent cells, or T cells, in the generation of a successful immune response was first realized in the early sixties. In the follow­ ing two decades, a succession of elegant experiments established the antigen specificity of T cells and their ability to perform both as regulatory and effector cells. T cells were shown to be essential in most immune reactions, playing a crucial role in augmenting the activity of effector T and B cells against'foreign'antigen, as well as in the suppression of effector activity against self antigens. The means by which T cells differentiate'foreign'from'self'antigens is based on their recognition of antigen almost exclusively in the context of self major histocompatibility complex products, unlike B cells, which recognize an­ tigen alone. It is this recognition, mediated by the T-cell receptor, that sets into motion the diverse cell-cell interactions, which control the differentiation and regulation of the immune response. Although its importance was well established, the molecular nature of the T-cell receptor remained elusive for two decades. Many hypotheses as to its structure and precise function were put forward, using immunoglobulin as a basis for conjecture, but'the Holy Grail of Immunology'remained ephemeral until three years ago. In the ensuing years, both immunologists and molecular biologists have contributed to an explosion of data unsurpassed by any previous period in the field.

Natural Cell-Mediated Immunity Against Tumors aims to be the first book to provide a comprehensive discussion on natural cell-mediated immunity against tumors. This book is mostly a collection of different research contributed by leading laboratories. It also presents a better perspective of how natural mechanisms fit in with and relate to the traditional and more extensively studied components of the immune system. The book starts off with an overview of the contents of the volume – the historical development of the advances in the field of research and the status of knowledge in the subject area. Divided into four major sections, the book consists of a total of 98 chapters. The sections discuss the natural killer cells and related cells and the natural lymphokine production. This book also explains the natural macrophage and granulocyte cytotoxicity. The book will be a helpful reference for students, professionals, and researchers in biology, immunology, biochemistry, microbiology, and other related fields.

Immune Recognition and Evasion: Molecular Aspects of Host-Parasite Interaction reviews recent advances in understanding the genetic basis of host-parasite interactions, with emphasis on antigenic epitopes, the genetics of parasites, the molecular mechanisms of immune recognition and evasion, and the way that cytokines and hormones act on host-parasite interactions. Organized into four parts encompassing 25 chapters, this volume begins with an overview of the genomic organization of the T cell receptor genes and the contribution of non-B DNA structures to switch recombination in immunoglobulin genes. It then discusses signal transduction by class II molecules encoded by the major histocompatibility complex la and the biological consequences of this process; allelic polymorphism of HLA class II antigens and its connection to the molecular basis of autoimmunity; mimicry between HLAB27 and bacteria; and genetic control of susceptibility to helminth infection. The reader is also introduced to recognition of protein antigens by antibodies; recognition of influenza antigens by class I-restricted cytotoxic T lymphocytes; the biochemical basis of cachexia of infection; mechanisms of antigenic variation in Plasmodium; and rational design of trypanocidal drugs. Geneticists and molecular biologists will gain valuable information from this book.