Corepressors are newly discovered assemblies of proteins that play essential roles in eukaryotic gene regulation. Recent discoveries about corepressors have provided new insights into the molecular basis of gene regulation, and have established surprising connections between the mechanisms of action of a wide variety of transcriptional regulators. The reviews in this volume critically discuss the nature, mechanisms of action, and physiological roles of corepressors in a diverse assortment of biological systems. Both basic and clinical investigators will be able to find relevant information. The comprehensive nature of the compilation, and the breadth of the reviews, are intended to provide the reader with an excellent introduction to the newly emergent and rapidly-growing field of corepressor research. A valuable and detailed reference guide.