Recent Progress in Hormone Research, Volume 40 presents the proceedings of the 1983 Laurentian Hormone Conference held in Mont Tremblant, Canada. The book presents papers on promoter elements of genes coding for proteins and modulation of transcription by estrogens and progesterone; the structure, expression, and evolution of the genes for the human glycoprotein hormones; and the regulation and organization of thyroid stimulating hormone genes. The text also includes papers on the mouse mammary tumor virus model in studies of glucocorticoid regulation; the role of the circadian system in reproductive phenomena; and endocytosis and membrane traffic in cultured cells. Other papers on neuroendocrinology, mechanism of hormone action, reproductive biology, subcellular processing of hormones and their receptors, hereditary resistance to 1,25-dihydroxyvitamin D are also encompassed. Physiologists, endocrinologists, biochemists, and scientists involved in hormone research will prove the book invaluable.