IThe authors have done an admirable job of presenting an extensive and comprehensive atlas of the developing rat brain in both coronal and sagittal sections. They have employed a number of innovative approaches that help to provide information about the dynamics of development.O OTrends in Endocrinology and Metabolism IThe authors have done an admirable job of presenting an extensive and comprehensive atlas of the developing rat brain in both coronal and sagittal sections. They have employed a number of innovative approaches.O OTrends in Endocrinology and Metabolism With the aid of advanced computer graphics, the authors revolutionize the study of the highly vulnerable prenatal brain and bring us closer to understanding the dynamics of its development, malfunctions, deficits, and abnormalities.