Recent Progress in Hormone Research, Volume 44 contains examples of the molecular biological approach to unraveling the mysteries of hormone action. The book presents papers on the structure and function of receptors and their role in the control of cell function via signal transduction and intracellular second messengers. The text also includes papers on the interactions and functions of the inhibin peptides and their role in the control of gonadotropin secretion. The role of growth factors and lymphokines in autocrine, paracrine, and endocrine physiology is also encompassed. The book will prove invaluable to endocrinologists, physiologists, biochemists, and scientists involved in hormone research.