This book presents the current aspects of the complex regulation of hormonal action. Novel approaches to the pathology and physiology of endocrine glands are established on molecular and cellular research of peptide, protein cascade, hormones, and genes at distinct levels. All these aspects are described extensively under the sections "Growth & Reproduction" and "Gynecological Endocrinology". The reader will benefit from the state-of-the-art endocrine knowledge provided in the book.