Current Topics in Cellular Regulation, Volume 3 presents the fundamental mechanisms involved in the regulation of diverse cellular activities, including cellular differentiation, intermediary metabolism, and the transfer of genetic information. This book provides information pertinent to the various aspects of cellular regulation. Organized into five chapters, this volume begins with an overview of the classification of the various pathways of intermediary metabolisms from a physiological standpoint. This text then examines the immunological surface disparities between normal and tumor cells. Other chapters consider a general nomenclature for enzyme systems that exist in interconvertible phosphorylated and dephosphorylate forms. This book discusses as well the correlation between yeast pyruvate kinase activity and ADP concentration at various KCI levels. The final chapter deals with the systematic investigation concerning the fluctuations of pyruvate kinase in liver and muscle. This book is a valuable resource for biologists, biochemists, pathologists, and research workers.