This is a good, basic explication of channel theory and the channel system, written by an experienced professor who trained and taught at the Nanjing College of TCM and more recently at the Pacific College of Oriental Medicine in California. It delves into the components of the channels and collaterals and the characteristics of the channel system, providing descriptives of the twelve channel and extraordinary channel systems that include the key points, pathway, associated organs and points, physiology, pathology, clinical applications, and divergent, tendinomuscular, and collateral channels. Twenty illustrative case histories with treatments are included to help the student grasp the partculars of theoretical application of the information presented. A brief glossary and bibliography are appended.