Recent Progress in Hormone Research, Volume 37 presents the proceedings of the 1980 Laurentian Hormone Conference held in Mont Tremblant Lodge on August 24-29, 1980. The book discusses the role of gonadal steroids in sexual differentiation; the regulation and function of the primate fetal adrenal gland and gonad; and an update of congenital adrenal hyperplasia. The text also describes the regulation of the mammalian corpus luteum; the mechanism of calcium action and release of vesicle-bound hormones during exocytosis; and the properties, intracellular localization, and multiple roles of calmodulin in cell regulation. The status of thymosin and other hormones of the thymus gland; the biosynthesis and mechanism of action of the nerve growth factor; and immunochemical studies relating to cholecystokinin in the brain and gut are also considered. The book further tackles the mechanism of insulin action; the intracellular receptors and internalization of polypeptide hormones; and studies on the structure and function of the chicken progesterone receptor. The text also looks into the role of guanine nucleotides in the regulation of adenylate cyclase activity; the nephrogenous cyclic AMP; and the neuroendocrine control of the menstrual cycle. Endocrinologists, physiologists, and biochemists will find the book invaluable.